RESUMO O fluido folicular é um abrigo que proporciona um microambiente para o desenvolvimento e a maturação dos oócitos. É um meio que proporciona um meio de comunicação dentro das células foliculares. A função do fluido folicular no desenvolvimento e na maturação de folículos e oócitos envolve a ação de determinados genes. Aqui, examinamos o impacto da CFF na expressão gênica de oócitos de camelo durante a (IVM). Hipoteticamente, o meio de MIV foi aprimorado com 2,5% de CFF e analisamos a expressão de vários genes, incluindo Bax, Bcl-2, P53, Acta2, TGFβ, Cx43 e Tagln. Consequentemente, o fluido folicular de camelos teve um efeito substancial sobre o nível de transcrição de mRNA do gene BCL2, que está relacionado à apoptose. Os genes Acta2 e Tagln, relacionados à proteína do citoesqueleto “actina” na via do fator de crescimento transformador beta (TGFβ), também foram modulados. No entanto, o fluido folicular aumentou a expressão de TGFβ em oócitos de camelo. Este estudo mostra os efeitos benéficos da CFF na expressão gênica de oócitos de camelo e fornece uma plataforma para o estudo dos muitos mecanismos envolvidos na meiose de oócitos, particularmente aqueles associados à via do TGFβ. Recomendamos o uso de dosagens mais altas e a medição dos níveis de expressão de determinados genes envolvidos na morte celular programada e na inflamação.

ABSTRACT Follicular fluid is a haven that provides a microenvironment for the development and maturation of oocytes. It is a medium that provides a means of communication within the follicular cells. The role of follicular fluid in the development and maturation of follicles and oocytes involves the actions of certain genes. Here, we examined the impact of CFF on the gene expression of camel oocytes during (IVM). Hypothetically, IVM medium was enhanced with 2.5% CFF, and we analyzed the expression of several genes including Bax, Bcl-2, P53, Acta2, TGFβ, Cx43, and Tagln. Consequently, the follicular fluid from camels had a substantial effect on the mRNA transcript level of the BCL2 gene, which is related to apoptosis. Acta2 and Tagln genes that relate to cytoskeletal protein “actin” in transforming growth factor beta (TGFβ) pathway were also modulated. However, the follicular fluid increased the expression of TGFβ in camel oocytes. This study showcases the beneficial effects of CFF on camel oocyte Gene Expression and provides a platform for studying the many mechanisms involved in oocyte meiosis, particularly those associated with the TGFβ pathway. We recommend using higher dosage and measuring the expression levels of certain genes involved in programmed cell death and inflammation.

Resumen Antecedentes: Polystemma se caracteriza por el indumento mixto, con tricomas glandulares volviéndose blancos, corolas rotadas a rotado-campanuladas, corona ginostegial con apéndices filiformes y folículos fusiformes. El taxón presenta numerosos cambios taxonómicos en los últimos años. En las filogenias recientes, Polystemma se ha recobrado como parafilético y muchas de las especies requieren nuevas combinaciones. Se realizan los cambios correspondientes y se describen tres especies nuevas del género. Preguntas: ¿Los datos morfológicos apoyan la transferencia de especies de Matelea a Polystemma? ¿Son especies diferentes las plantas de Polystemma colectadas en Durango, Jalisco y Sinaloa? Especies de estudio: Polystemma. Sitio y años de estudio: Estados Unidos de América, México, Guatemala, El Salvador, Honduras, Nicaragua y Costa Rica, entre 2014 y 2024. Métodos: Se revisaron más de 3,000 ejemplares de 20 diferentes herbarios y bases de datos. Se generaron mapas de distribución y proponen categorías de riesgo. Se planteó como hipótesis explicativa el concepto cohesivo de especie para el reconocimiento de los taxones. Resultados: Se reconocen 27 especies del género, distribuidas desde el sureste de los Estados Unidos de América hasta Costa Rica. Se proponen once combinaciones nuevas, tres lectotipificaciones y tres especies nuevas. Se incluye una clave de identificación e información sobre tipos, sinónimos, hábitat, imágenes de todas las especies y mapas de distribución. Conclusiones: La revisión de este género permitió actualizar la sistemática dentro de la subtribu Gonolobinae. Asimismo, resalta a México como el centro de diversidad y endemismo para Polystemma.

Abstract Background: Polystemma is characterized by a mixed indumentum of glandular trichomes that turn white, rotate to rotate-campanulate corollas, a gynostegial corona with filiform appendages, and fusiform follicles. The taxon has undergone numerous taxonomic changes in recent years. In current phylogenies, Polystemma has been recovered as paraphyletic and many of its species require a new combination. In this study, we propose the corresponding changes and describe, map, and illustrate three new species within this genus. Questions: Do morphological data support the transfer of Matelea species to Polystemma? Are the plants of Polystemma collected in Durango, Jalisco, and Sinaloa different species? Studied species: Polystemma. Study site and dates: United States, Mexico, Guatemala, El Salvador, Honduras, Nicaragua y Costa Rica, between 2014 and 2024. Methods: More than 3,000 specimens from 20 herbaria and virtual databases were reviewed. Distribution maps were generated, and risk categories were proposed. The cohesive species concept was proposed as an explanatory hypothesis for taxon recognition. Results: A total of 27 species of the genus were recognized, these distributed from the southeastern United States of America to Costa Rica. Eleven new combinations and three lectotypifications are made, and three new species for science are proposed. Identification key, nomenclatural type information, synonyms, habitat, images of all species and distribution maps are also included. Conclusions: The review of this genus allowed for updating and improving the systematics within the subtribe Gonolobinae. Likewise, it highlights Mexico as the center of diversity and endemism for Polystemma.

Resumen Antecedentes: Calotropis procera es nativa del trópico y subtrópico de Asia y África. En México se encuentra en Yucatán, Quintana Roo y Oaxaca. Preguntas y / o Hipótesis: ¿La morfometría de frutos y semillas varía en donde es nativa o exótica? ¿Las estructuras de la semilla de Calotropis procera han sido bien identificadas? Especie de estudio: La exótica Calotropis procera ya se ha reportado en varios estados de México, sin embargo, hay poca información sobre su biología reproductiva en las poblaciones mexicanas. Sitio y años de estudio: Los frutos se colectaron en Oaxaca, México en septiembre de 2019. Métodos: Se obtuvieron datos morfométricos de frutos y semillas y se tomaron imágenes mediante microscopía. Resultados: Los frutos son folículos ovoides y coriáceos. El promedio de semillas por fruto es de 364 ± 86 (DE). La semilla es café y aplanada dorsoventralmente. El largo es de 8.37 ± 0.413 mm, ancho de 5.01 ± 0.39 mm y el peso es de 10.5 ± 7.86 mg. Se reporta la posición del hilo y del micrópilo y la existencia de dos tipos de tricomas en la testa. Sugerimos que el relieve en la superficie ventral de la semilla es el rafe. Conclusiones: De los datos obtenidos concluimos que las características de frutos y semillas están bien conservadas en esta especie. Confirmamos la posición del hilo y del micrópilo, y reportamos la existencia de dos tipos de tricomas en la testa. Se sugiere la posición del rafe, lo que puede apoyar en futuros estudios taxonómicos.

Abstract Background: Calotropis procera is a plant native from the tropics and subtropics of Asia and Africa. In Mexico, its presence is now registered in Yucatán, Quintana Roo and Oaxaca. Questions and / or Hypotheses: Fruit and seed morphometry vary among places where it is native or exotic? Are seed structures well identified in Calotropis procera? Studied species: The exotic Calotropis procera has been already reported in several states in Mexico, however, information about its reproductive biology in Mexican populations is scarce. Studied site and dates: Fruits were collected in Oaxaca, Mexico in September 2019. Methods: We obtained fruit and seed morphometric data and seed images with microscopy. Results: The fruits are green and ovoid. The average number of seeds per fruit is 364 ± 86 (SD). The seed is brown and flattened dorsoventrally. The length of the seeds is 8.37 ± 0.413 mm, the width is 5.01 ± 0.39 mm, and the weight is 10.5 ± 7.86 mg. The position of the hilum and the micropyle is reported and the occurrence of two types of trichomes on the testa. We suggest that the protrusion on the ventral surface of the seed is the raphe. Conclusions: From data obtained we concluded that fruit and seed characteristics are well conserved in this species. We confirmed the position of the hilum and micropyle and reported the presence of two types of trichomes in the testa. Location of the raphe is suggested, providing information that may be useful for future taxonomic studies.

RESUMEN Los sistemas de producción de embriones in vitro de búfalo tienen grandes perspectivas productivas y oportunidades de mejora. Entre ellas, el desarrollo de estudios comparativos con especies en las que existen mayores avances en esta biotecnología reproductiva. El objetivo del presente trabajo fue identificar diferencias en los perfiles electroforéticos del fluido folicular (FF) de diferentes tamaños en vacas y búfalas. Se obtuvo FF de folículos pequeños (<7 mm) y grandes (>7 mm), provenientes de ovarios de 25 vacas (Bos indicus) y 20 búfalas (Bubalus bubalis) colectados en la central de faenado de Medellín (Antioquia), Colombia. El contenido de proteína total del FF fue cuantificado y posteriormente se sometió a un proceso de depleción de albúmina e inmunoglobulinas. Para determinar los perfiles electroforéticos a través del análisis en un fotodocumentador, las muestras se sometieron a electroforesis desnaturalizante en geles de poliacrilamida y dodecilsulfato sódico (SDS-PAGE). Se compararon los valores obtenidos de la cantidad relativa de cada banda entre especies y tamaños de folículos, mediante la prueba de Mann-Whitney. Los resultados evidenciaron que no hubo diferencias significativas en la concentración de proteína total entre los diferentes tamaños de folículo y las especies. Además, 72,6% de las proteínas del FF evaluado son inmunoglobulinas y albúmina. Los perfiles de los folículos pequeños (<7mm) presentaron 19 bandas en las vacas y 11 en las búfalas. Las bandas detectadas estuvieron en un rango de peso molecular entre 5 y 250 kDa. Se identificaron diferencias cuantitativas de las proteínas en los fluidos foliculares evaluados. La información obtenida puede contribuir a elucidar las diferencias fisiológicas entre folículos grandes y pequeños, pero no explica las diferencias entre especies.

ABSTRACT In vitro embryo production systems in buffaloes have great productive perspectives and opportunities for improvement. Among these, comparative studies with species with more significant advances in reproductive biotechnology have been developed. Accordingly, this work aimed to identify the differences in the electrophoretic profiles of proteins in the follicular fluid (FF) of cows and buffaloes and their possible association with follicle size. FF was obtained at the central abattoir in Medellín (Antioquia), Colombia, from small (<7 mm) and large (>7 mm) follicles from the ovaries of 25 cows (Bos indicus) and 20 buffaloes (Bubalus bubalis). The total protein content of the FF was quantified and subsequently depleted of albumin and immunoglobulins. Samples were subjected to denaturing electrophoresis in sodium dodecyl sulfate-polyacrylamide gels (SDS-PAGE) to determine the electrophoretic profiles using a photodocumenter. The values obtained for the relative amount of each band were compared between species and follicle sizes using the Mann-Whitney test. The results showed no significant differences in total protein concentration between the different follicle sizes and species. Further, 72.6% of the FF proteins are immunoglobulins and albumin. The profiles of small follicles (<7mm) in cows presented 19 bands and 11 in buffaloes. The molecular weight range of the bands detected was between 5 and 250 kDa. Quantitative differences of the proteins in the follicular fluids evaluated were identified. The information obtained may contribute to elucidating the physiological differences between large and small follicles but does not explain the differences between species.

Resumen Introducción: El pilomatrixoma o epitelioma calcificado de Malherbe es una neoplasia cutánea benigna que muestra diferenciación hacia la porción de la matriz de los folículos pilosos. Es la neoplasia cutánea benigna más frecuente en la infancia y la juventud, aunque puede ocurrir a cualquier edad. Tiene una incidencia general que oscila entre el 0.001% y el 0.0031% de todos los tumores cutáneos. Se reporta una ligera predilección por el sexo femenino, con una relación mujer: hombre de 1.15:1. Métodos: Estudio observacional, descriptivo, retrospectivo y transversal en el que se utilizó la base de datos electrónica del departamento de dermatopatología del Hospital General Dr. Manuel Gea González, entre enero de 1992 y julio de 2023. Para la búsqueda de los casos solo se incluyeron aquellos con diagnóstico histopatológico de pilomatrixoma, pilomatricoma o epitelioma calcificado de Malherbe. Resultados: Se registraron 200 pilomatrixomas en 177 pacientes. El tumor predominó en mujeres de edad pediátrica; el promedio de edad de la población estudiada fue 22.98 años. La topografía más frecuente fue la cabeza (región periorbitaria), seguida de las extremidades superiores y el tronco. Al separar la población en pediátricos y adultos, se encontraron 111 y 89 casos, respectivamente. Conclusiones: Presentamos un estudio detallado sobre pilomatrixomas con una visión exhaustiva de las características demográficas, clínicas y epidemiológicas de esta neoplasia cutánea benigna. Los resultados revelaron datos estadísticos sólidos, destacando la distribución por edades, sexo, topografía, morfología, síntomas acompañantes y frecuencia de diagnósticos diferenciales clínicos. Este estudio contribuye significativamente al conocimiento existente sobre los pilomatrixomas y sirve como una referencia valiosa para futuras investigaciones y para la práctica clínica.

Abstract Background: Pilomatrixoma, also known as calcifying epithelioma of Malherbe, is a benign cutaneous neoplasm that demonstrates differentiation towards the matrix portion of hair follicles. It is the most common benign cutaneous neoplasm in childhood and youth, although it can occur at any age. With a general incidence ranging from 0.001% to 0.0031% of all cutaneous tumors. There is a slight predilection for females, with a female-to-male ratio of 1.15:1. Methods: Observational, descriptive, retrospective, and cross-sectional study conducted using the electronic database of the dermatopathology department of Dr. Manuel Gea González General Hospital, from January 1992 to July 2023. Only cases with a histopathological diagnosis of pilomatrixoma, pilomatricoma, and Malherbe’s calcifying epithelioma were included. Results: A total of 200 pilomatrixomas were recorded in 177 patients. The tumor predominantly affected females in the pediatric age group, with an average age of 22.98 years in the studied population. The most common location was the head (periorbital region), followed by the upper extremities and trunk. Upon separating the population into pediatric and adult groups, 111 and 89 cases were identified, respectively. Conclusions: We present a detailed study on pilomatrixomas with a comprehensive overview of the demographic, clinical, and epidemiological characteristics of this benign cutaneous neoplasm. The results revealed robust statistical data highlighting the distribution by age, gender, topography, morphology, accompanying symptoms, and frequency of clinical differential diagnoses. This study significantly contributes to the existing knowledge of pilomatrixomas and serves as a valuable reference for future research and clinical practice.

SUMMARY: This study evaluated the morphology of alpacas skin. Biopsies were collected and samples were fixed in 10 % neutral buffered formalin for histological procedures. The sections were stained with hematoxylin and eosin, picrosirius red and Masson’s trichrome. Types I, III and IV collagen were analyzed by immunohistochemistry. The derma presented sebaceous and sweat glands, as well as follicular groups with medullated fibers. Type I and type IV collagen were observed at epidermis and dermis as well as in glandular structures and hair follicles. The collagen III, was observed only in dermis.

RESUMEN: Este estudio evaluó la morfología de la piel de alpacas. Se recogieron biopsias y las muestras se fijaron en formalina tamponada neutra al 10 % para procedimientos histológicos. Las secciones se tiñeron con hematoxilina y eosina, rojo picrosirius y tricrómico de Masson. El colágeno tipo I, III y IV se analizó mediante inmunohistoquímica. La dermis presentó glándulas sebáceas y sudoríparas, así como grupos foliculares con fibras medulares. Se observó colágeno tipo I y tipo IV en la epidermis y la dermis, así como en estructuras glandulares y folículos pilosos. El colágeno III, se observó únicamente en la dermis.

Abstract Introduction and objectives: Determine the clinical and ultrasound findings in patients who present less than 12 ovarian follicles in the ultrasound count. Method: Observational study (historical cohort) with 505 patients selected by consecutive sampling, between January 14, 2019 and March 15, 2021, who consulted for different gynecological disorders. Two groups of patients were generated: those with 1 to 3 follicles in one of the ovaries (n = 377) and those with 4 to 11 follicles (n = 128). The primary outcome was the presence of at least one clinical sign of hyperandrogenism. Results: Of 505 patients analyzed, when comparing those who presented 4 to 11 follicles in one of the ovaries (n = 377) with those who presented 1 to 3 follicles (n = 128), the first group showed a greater presence of signs of hyperandrogenism, thicker endometrium in luteal phase and a menstrual pattern with one to four days of heavy menstrual bleeding, all differences were statistically significant (p < 0.05). Conclusion: In patients with 4 to 11 follicles in one of their ovaries, signs of hyperandrogenism, similar to polycystic ovary syndrome, were observed.

Resumen Introducción y objetivos: Determinar los hallazgos clínicos y ecográficos en pacientes que presentan menos de 12 folículos ováricos. Método: Estudio observacional (cohorte histórica) con 505 pacientes seleccionadas mediante muestreo consecutivo, entre el 14 de enero del 2019 y el 15 de marzo del 2021, que consultan por diversas alteraciones ginecológicas. Se generan dos grupos de pacientes, las que presentaron uno a tres folículos en uno de los ovarios (n = 377) y las que presentaban 4 a 11 folículos (n = 128). Se midió como resultado primario la presencia de al menos un signo clínico de hiperandrogenismo. Resultados: De 505 pacientes analizadas, al comparar las que presentaron 4 a 11 folículos en uno de los ovarios (n = 377) con las que presentaban 1 a 3 folículos (n = 128), las primeras mostraron mayor presencia de signos de hiperandrogenismo, endometrio en fase lútea de mayor espesor y un patrón menstrual con uno a cuatro días de sangrado menstrual abundante, diferencias todas estadísticamente significativas (p < 0,05). Conclusión: En pacientes con 4 a 11 folículos en uno de sus ovarios, se observaron signos de hiperandrogenismo, similares al síndrome de ovario poliquístico.

Resumen Introducción: El tricoblastoma es una neoplasia que por su baja frecuencia no se sospecha clínicamente, pero que debe ser diferenciada de un carcinoma de células basales a través del estudio histopatológico. Objetivo: Reportar un tumor sumamente raro que se presenta en sitios donde es frecuente observar carcinomas basocelulares. Caso clínico: Se presenta el caso de una paciente de 34 años, quien mostraba un nódulo deconsistencia firme y bordes definidos en la región frontal derecha. En laevaluación histológica, se encontró un nódulo hipodérmico bien circunscrito,constituidopormasasynidosdecélulasbasaloidesgrandesconnúcleoovoideo y nucléolo visible con empalizada periférica y algunos folículos rudimentarios. Ante estos signos histopatológicos, se planteó el diagnóstico diferencial con carcinoma de células basales y tricogerminoma,yaqueestasneoplasiaspresentanelementos comunes. La inmunohistoquímica mostró que las células tumorales eran positivas en mayor o menor porcentaje parap63,p53,CK20,Bcl2yCD10. Conclusiones: Pensar en el diagnóstico de un tricoblastoma es un reto, ya que tiene características similares al carcinoma de células basales y a otros tumores benignos foliculares como el tricogerminoma. Por ello, es necesario interrelacionar los hallazgos histomorfológicos con los resultados inmunohistoquímicos.

Abstract Introduction : Trichoblastoma is a neoplasm that is not clinically suspected due to its low frequency but must be differentiated from basal cell carcinoma through histopathological study. Aim : To report an extremely rare tumor that occurs in places where it is common to see basal cell carcinomas. Clinical case : The case of a 34-year-old patient is presented, who showed a nodule of firm consistency and defined edges on the right side of the forehead. In the histological evaluation a well-circumscribed hypodermal nodule was found consisting of masses and nests of large basaloid cells with an ovoid nucleus and visible nucleolus with peripheral palisade and some rudimentary follicles. Given these findings, the differential diagnosis with basal cell carcinoma and trichogerminoma was raised, since these neoplasms have common elements. Immunohistochemistry showed that tumor cells were positive in a higher or lesser percentage for: p63, p53, CK20, Bcl2 and CD10. Conclusions : Diagnosingatrichoblastoma is a challenge since it has characteristics similar to basal cell carcinoma and other benign follicular tumors such as trichogerminoma, so it is necessary to interrelate the histomorphological findings with the immunohistochemical results.

RESUMEN Fundamentos: Actualmente, la esterilidad afecta a entre el 15% y 20% de las parejas en edad fértil. El éxito reproductivo femenino está determinado fundamentalmente por la edad y la reserva ovárica (RO). Recientes estudios remarcan la influencia de factores modificables como los hábitos dietéticos y el estado nutricional en la RO. A este respecto, la Dieta Mediterránea (DM) se postula como un estándar de alimentación saludable. Por ende, el objetivo de este estudio fue analizar la influencia de la adherencia a la DM y el estado nutricional en la RO de mujeres estériles. Métodos: Se efectuó un estudio descriptivo transversal, de un año de duración, entre los meses de febrero de 2022 y febrero de 2023, en una muestra de cuarenta y cinco pacientes de sexo femenino que acudieron a la consulta de Ginecología-Esterilidad en el Hospital Marina Salud de Denia (España) por deseo genésico mayor a un año. Se realizó un análisis descriptivo de carácter exploratorio basado en una estadística univariable. Resultados: El estudio incluyó una muestra total de cuarenta y cinco mujeres (n=45) siendo la media de edad de 31,84 (±3,99) años, siendo el IMC medio de 26,27 (±6,08) kg/m2, teniendo el 44,4% (n=20) un IMC por encima de los valores normales. En cuanto a la RO, se midió en base a la AMH, siendo el valor promedio de 2,32 (±1,59) ng/ml, y al RFA, siendo la media de 19,80 (±14,13) folículos antrales. Se encontró una asociación estadísticamente significativa entre la baja adherencia a la DM y menores niveles de hormona antimülleriana (AMH; p=0,025). Además, se determinó una asociación entre el bajo consumo de verduras y hortalizas (p=0,044), el excesivo consumo de carne roja (p=0,027) y de bebidas carbonatadas (p=0,015) con insuficientes niveles de AMH, indicativos de baja RO. También se observó que el bajo consumo de fruta estaba asociado con bajos niveles de estradiol (p=0,045). Asimismo, se encontraron asociaciones estadísticamente significativas que reflejaban la influencia del estado nutricional en la RO. Conclusiones: Uno de los principales factores que condicionan el éxito de una TRA (técnica de reproducción asistida) es la RO de la mujer, siendo la AMH el parámetro más utilizado para su valoración. La RO puede verse influenciada por factores modificables como son el estilo de vida y la alimentación, se observa cómo una alta adherencia a la DM y el consumo de verduras y hortalizas se relaciona con mayores niveles de AMH; por el contrario, la alta ingesta de carne roja y bebidas carbonatadas se asocia niveles más bajos. El estado nutricional, el grado de adherencia a la DM y los hábitos dietéticos influyen en el estado de la RO, de modo que sería conveniente promover programas de mejora en la alimentación de la población con la finalidad de mejorar la salud reproductiva.

ABSTRACT Background: Currently, esterility affects between 15% and 20% of couples of fertile age. Female reproductive success is mainly determined by age and ovarian reserve (OR). Recent studies highlight the influence of modifiable factors such as dietary habits and nutritional status on OR. In this regard, the Mediterranean Diet (MD) is postulated as a standard of healthy eating. Therefore, the objective of this paper was to analyze the influence of adherence to DM and nutritional status on the OR of infertile women. Methods: A descriptive cross-sectional study was carried out, lasting one year, between February 2022 and February 2023, in a sample of forty-five female patients who attended the Gynaecology-Esterility consultation at the Marina Salud Hospital in Denia (Spain) due to genital desire older than one year. An exploratory descriptive analysis based on univariate statistics was performed. Results: The mean age of the sample (n=45) was 31.84 (±3.99) years, with an average BMI of 26.27 (±6.08) kg/m2, with 44.4% (n=20) having excess body weight. The RO was measured based on AMH, with an average value of 2.32 (±1.59) ng/ml and RFA, with an average of 19.80 (±14.13) antral follicles. A statistically significant association was found between low adherence to DM and lower anti-Müllerian hormone (AMH; p=0.025) levels. In addition, an association was found between low consumption of vegetables (p=0.044), excessive consumption of red meat (p=0.027) and carbonated beverages (p=0.015) with insufficient AMH levels, indicative of low OR. Low fruit consumption was also found to be associated with low oestradiol levels (p=0.045). Statistically significant associations were also found reflecting the influence of nutritional status on OR. Conclusions: One of the main factors conditioning the success of ART (assisted reproductive technology) is the woman's OR. The most widely used parameter to assess OR is AMH. Lifestyle and diet are modifiable factors that can influence OR. High adherence to DM and consumption of vegetables is associated with higher levels of AMH; however, high intake of red meat and carbonated beverages is associated with lower levels. Nutritional status, adherence to DM and dietary habits influence the status of OR, so it would be advisable to promote programmes to improve the population's diet in order to improve reproductive health.

Resumo: Objetivo Este estudo avaliou a reprodução e fecundidade de L. lacustris em ambientes da planície de inundação do alto rio Paraná, com os objetivos de: (i) reconhecer as células germinativas da foliculogênese e oogênese; (ii) caracterizar as fases reprodutivas; (iii) investigar o diâmetro dos oócitos e avaliar se esta espécie tem o desenvolvimento dos oócitos sincrônico em grupo ou assincrônico e se a desova é total ou parcelada; (iv) estimar a fecundidade do lote; (v) estabelecer a relação entre fecundidade/peso do ovário, comprimento padrão e peso total e (vi) verificar as principais áreas de reprodução desta espécie na planície de inundação do alto rio Paraná. Métodos As amostragens foram realizadas em rios, lagoas abertas e fechadas no alto rio Paraná, com redes de espera nos meses de março, junho, setembro e dezembro de 2013, 2014, 2015, 2016, 2018 e 2019 e março e setembro de 2017. Foram amostradas 442 fêmeas e subamostradas 111, das quais foi retirada uma subamostra do ovário e fixada em solução de Bouin. Uma subamostra de 20 ovários na fase apta a desova foi fixada em solução de formaldeído tamponado a 4%, para posteriormente, estimar o diâmetro dos oócitos e fecundidade. Resultados As células germinativas registradas foram: oogônias diferenciadas, oócitos de crescimento primário e secundário, oócitos de crescimento completo e maduros, e folículos pós-ovulatórios que permitiram reconhecer as fases reprodutivas. As informações do diâmetro dos oócitos revelou que a espécie tem desenvolvimento dos oócitos sincrônico em grupo, fecundidade determinada e desova parcial, e elimina no período de desova em média 38.490 oócitos. Conclusões Leporinus lacustris reprodutivamente bem sucedido no rio Baía e nas lagoas Fechada, do Guaraná, dos Patos, das Garças, do Ventura e do Ressaco do Pau Véio reforçando a importância das áreas de proteção ambiental das ilhas e várzeas do rio Paraná, Parque Nacional da Ilha Grande e Parque Estadual do rio Ivinheima. Resumo L Paraná i (i oogênese ii (ii reprodutivas iii (iii parcelada iv (iv lote v (v fecundidadepeso vi (vi rios junho 2013 2014 2015 2016 201 2017 44 111 Bouin 2 4 4% posteriormente diferenciadas secundário maduros pósovulatórios pós ovulatórios parcial 38490 38 490 38.49 Fechada Guaraná Patos Garças Ivinheima 11 3849 3 49 38.4 1 384 38.

Abstract: Aim This study evaluates the reproduction and fecundity of Leporinus lacustris in upper Paraná River floodplain environments with the objectives to (i) recognize the germ cells of folliculogenesis and oogenesis; (ii) characterize reproductive phases; (iii) investigate oocyte diameter and evaluate if this species has group synchronous or asynchronous oocyte development and if spawning is total or batch; (iv) estimate batch fecundity; (v) establish the relationship between fecundity/ovary weight, standard length, and total weight; (vi) verify the reproductive areas of this species in the upper Paraná River floodplain. Methods Sampling was carried out using gillnets in rivers, and open and closed lagoons, in March, June, September, and December 2013, 2014, 2015, 2016, 2018, and 2019 and March and September 2017. A total of 442 females were sampled and 111 subsampled, each of which had an ovary removed and fixed in Bouin solution. A subsample of 20 ovaries in the spawning capable phase were fixed in a 4% buffered formaldehyde solution to estimate the diameter of the oocytes and fecundity. The ovaries were dehydrated, embedded in historesin, cut, stained, and evaluated as regards folliculogenesis, oogenesis, development phases, and reproduction areas. Results The germ cells recorded were differentiated oogonia, primary and secondary growth oocytes, fully-grown and mature oocytes, and post-ovulatory follicles that permitted the recognition of the reproductive phases. Oocyte diameter information revealed that the species has group synchronous oocyte development, determinate fecundity and batch spawning, and eliminates an average of 38,490 oocytes. Conclusions The fact that Leporinus lacustris is reproductively successful in the Baía River and in the Fechada, Guaraná, Patos, Garças, Ventura and Ressaco do Pau Véio lagoons strengthens the importance of the areas of environmental protection of the islands and lowlands of the Paraná River, Ilha Grande National Park and Ivinheima River State Park. Abstract i (i oogenesis ii (ii phases iii (iii iv (iv v (v fecundityovary weight length vi (vi rivers June 2013 2014 2015 2016 2018 201 2017 44 11 subsampled 2 4 dehydrated historesin cut stained oogonia fullygrown fully grown postovulatory post ovulatory 38490 38 490 38,49 Fechada Guaraná Patos Garças 1 3849 3 49 38,4 384 38,

Abstract This review aims to discuss the main factors involved in the development of early antral follicles until gonadotropin dependence. This follicular phase is characterized by intense proliferation of granulosa cells, formation of a fluid-filled cavity, morphological differentiation of cumulus cells, mural granulosa cells and recruitment of theca cells. The interaction between oocyte, granulosa and theca cells is crucial for follicular growth and hormone production. Growth factors produced by the oocyte, such as growth and differentiation factor-9 (GDF-9) and bone morphogenetic protein-15 (BMP-15), regulate granulosa cell proliferation and differentiation and antral cavity development, as well as stimulate the production of follicle-stimulating hormone (FSH) receptors in granulosa cells. In response to FSH, granulosa cells secrete C-type natriuretic peptide (CNP), which acts through its receptor to increase cyclic guanosine monophosphate (cGMP) production and consequently follicular development. Granulosa cells also produce insulin-like growth factor-1 (IGF-1) and increase aromatase enzyme activity, which results in greater sensitivity to gonadotropins and follicular steroidogenesis. The absence of IGF-1 signaling causes cessation of follicular growth at the early antral stage. Many other local factors are involved in the regulation of follicular development. Therefore, this review brings relevant data for a better understanding of the mechanisms involved in the control of early antral follicle growth, emphasizing the role of endocrine and paracrine factors, the oocyte-granulosa cell interaction and the processes of follicular atresia. The challenges for the establishment of efficient culture systems for in vitro growth of early antral follicles are also discussed. dependence fluidfilled fluid filled oocyte factor9 factor 9 factor- GDF9 GDF (GDF-9 protein15 protein 15 protein-1 BMP15, BMP15 BMP , (BMP-15) folliclestimulating stimulating FSH (FSH Ctype C type CNP, CNP (CNP) cGMP (cGMP insulinlike insulin like factor1 1 IGF1 IGF (IGF-1 activity steroidogenesis IGF- stage Therefore oocytegranulosa atresia discussed (GDF- protein1 protein- BMP1 (BMP-15 (CNP (IGF- (GDF (BMP-1 (IGF (BMP- (BMP

Resumo Esta revisão tem como objetivo discutir os principais fatores envolvidos no desenvolvimento de folículos antrais iniciais até a dependência de gonadotrofinas. Essa fase folicular é caracterizada por intensa proliferação de células da granulosa, formação de uma cavidade preenchida por líquido, diferenciação morfológica das células do cumulus, células da granulosa murais e recrutamento de células da teca. A interação entre oócito, células da granulosa e da teca é determinante para o crescimento folicular e produção hormonal. Fatores de crescimento produzidos pelo oócito, fator de crescimento e diferenciação-9 (GDF-9) e proteína morfogenética óssea-15 (BMP-15), regulam a proliferação e diferenciação de células da granulosa, e o desenvolvimento da cavidade antral, bem como estimulam a produção de receptores do hormônio folículo estimulante (FSH) nas células da granulosa. Em resposta ao FSH, as células da granulosa secretam o peptídeo natriurético tipo C (CNP), que atua através de seu receptor para aumentar a produção de monofosfato de guanosina cíclico (GMPc) e consequentemente o desenvolvimento folicular. As células da granulosa também produzem o fator de crescimento semelhante à insulina 1 (IGF-1) e aumentam a atividade da enzima aromatase, o que resulta em maior sensibilidade às gonadotrofinas e esteroidogênese folicular. A ausência de sinalização do IGF-1 causa cessação do crescimento folicular no início do estágio antral. Muitos outros fatores locais estão envolvidos na regulação do desenvolvimento folicular. Por tanto essa revisão traz dados relevantes para uma melhor compreensão dos mecanismos envolvidos no controle do crescimento de folículos antrais iniciais, enfatizando o papel dos fatores endócrinos e parácrinos, a interação oócito-células da granulosa e os processos de atresia folicular. Os desafios para o estabelecimento de sistemas de cultivo eficientes para o crescimento in vitro de folículos antrais iniciais também são discutidos. líquido cumulus oócito hormonal diferenciação9 9 diferenciação- GDF9 GDF (GDF-9 óssea15 óssea 15 óssea-1 BMP15, BMP15 BMP , (BMP-15) antral FSH (FSH CNP, CNP (CNP) GMPc (GMPc IGF1 IGF (IGF-1 aromatase IGF- parácrinos oócitocélulas discutidos (GDF- óssea1 óssea- BMP1 (BMP-15 (CNP (IGF- (GDF (BMP-1 (IGF (BMP- (BMP

ABSTRACT Congenital distichiasis is a rare condition, of controversial origin, with therapeutic options not always having favorable results. This is a case report of a seven-year-old male child with congenital distichiasis affecting all eyelids, with the presence of some distichiasis hair follicles despite surgical treatment using the interlamellar division technique, selective application of cryotherapy and electrolysis. The treatment of congenital distichiasis involves the need to combine techniques to achieve more effective results. condition origin results sevenyearold seven year old eyelids technique electrolysis

RESUMO A distiquíase congênita é uma condição rara, de origem controversa, com opções terapêuticas cujos resultados nem sempre são favoráveis. Este é o relato de caso de uma criança do sexo masculino, de 7 anos, portadora de distiquíase congênita afetando as quatro pálpebras, com permanência de alguns folículos pilosos distiquiáticos mesmo tratados cirurgicamente pela técnica da divisão interlamelar, com aplicação seletiva de crioterapia e de eletrólise. O tratamento da distiquíase congênita envolveu a necessidade de associar técnicas, a fim de se obterem resultados mais efetivos. rara controversa favoráveis masculino anos pálpebras interlamelar eletrólise técnicas efetivos

Resumo Alopecia areata (AA) é uma alopecia não cicatricial devida a dano imunomediado dos folículos pilosos. Tricotilomania (TT) é uma desordem psicodermatológica caracterizada pela remoção repetitiva dos fios. AA e TT são causas comuns de alopecia em crianças e podem ser desencadeadas por ansiedade e eventos estressantes. A ocorrência simultânea de AA e TT em crianças raramente é reportada na literatura. Descrevemos o caso de um menino de 9 anos de idade, com história de alopecia de 3 meses de duração. A história clínica associada à tricoscopia detalhada permitiu o diagnóstico de AA e TT simultâneas.

Abstract Alopecia areata (AA) is a non-scarring alopecia due to an immune-mediated damage to the hair follicles. Trichotillomania (TT) is a psychodermatologic disorder characterized by repetitive hair removal. AA and TT are common causes of hair loss in children and can be triggered by anxiety and distressful events. The simultaneous onset of AA and TT in children is rarely reported in the literature. We describe the case of a 9-year-old male child with a 3-month history of hair loss. The clinical history associated with a detailed trichoscopy led to the diagnosis of concomitant AA and TT.

Resumen La cachemira es una fibra de las más finas y suaves para la industria textil. Su obtención por peinado es cruenta, con hasta tres repeticiones, no acorde al bienestar animal. La esquila implica riesgo de mortandad por alta sensibilidad de las cabras a temperaturas bajas, porque debe realizarse antes de la muda primaveral. Es necesario explorar métodos de cosecha sincronizada, uniforme y con bienestar animal. Para esto se requieren investigaciones del ciclo de los folículos pilosos de cabras en Patagonia Norte, Argentina. El objetivo fue contribuir al estudio de la biología del crecimiento y desprendimiento de la fibra de cabras criollas portadoras de cachemira de Patagonia Norte y determinar los momentos óptimos para implementar métodos de cosecha. Se utilizaron cabras criollas adultas a 35° latitud sur, en sistema semi-extensivo en La Pampa. Periódicamente se tomaron muestras individuales de fibra por peinado y tricotomía en cuello, espalda, flanco y pierna. Poblacionalmente el desprendimiento de fibra fina al peinado es significativo (p < 0,05) en junio-septiembre, máximo en agosto, en coincidencia con las mayores cantidades de fibra fina y largo de mecha, mientras el diámetro medio no varía significativamente durante el año (p < 0,05). Los caprinos presentaron muda visible a partir de septiembre, completándola en octubre-enero, la mayoría comenzando por regiones de cuello y espalda. Dadas propuestas como la de Australia de esquila en julio, con este trabajo se infiere que la recolección de cachemira sin pérdidas significativas, se puede postergar de acuerdo a la variación climática hasta el mes de agosto.

Abstract Cashmere is one of the finest and softest fibers for the textile industry. Its obtaining by combing is cruel, with up to three repetitions, not according to animal welfare. Shearing implies a risk of mortality due to the high sensitivity of goats to low temperatures, because it must be carried out before the spring moult. It is necessary to explore methods of synchronized, uniform harvest and with animal welfare. Investigations of the cycle of hair follicles of goats in North Patagonia, Argentina are required. The objective was to contribute to the study of the biology of growth and fiber shedding of cashmere-bearing creole goats from Northern Patagonia and to determine the optimal moments to implement harvesting methods. Adult creole goats were used at 35° south latitude, in a semi-extensive system in La Pampa. Individual fiber samples were taken periodically by combing and trichotomy in the neck, back, flank and leg. At the population level, the shedding of fine fiber when combed is significant (p < 0.05) in June-September, maximum in August, coinciding with the highest amounts of fine fiber and wick length, while the average diameter does not vary significantly during the year (p < 0.05). The goats presented visible hair removal from September, completing it in October-January, most of them beginning in the neck and back region. Given proposals such as Australia's shearing in July, this work infers that cashmere harvest without significant losses can be postponed, depending on the climatic variation, until the month of August.

Resumo A caxemira é uma das fibras mais finas e macias para a indústria têxtil. É obtida por penteação, com um máximo de três repetições, o que não está de acordo com o bem-estar animal. A tosquia implica um risco de mortalidade devido à elevada sensibilidade das cabras às baixas temperaturas, uma vez que deve ser efectuada antes da muda da Primavera. É necessário explorar métodos de tosquia sincronizados, uniformes e que respeitem o bem- estar dos animais. Para tal, é necessário investigar o ciclo do folículo piloso das cabras no norte da Patagónia, Argentina. O objectivo era contribuir para o estudo da biologia do crescimento e da queda de fibras das cabras Crioulas de caxemira da Patagónia Norte e determinar os momentos ideais para a aplicação dos métodos de colheita. Foram utilizadas cabras Crioulas adultas a 35° de latitude sul, num sistema semi-extensivo em La Pampa. Foram colhidas periodicamente amostras individuais de fibras através de penteação e tricotomia do pescoço, dorso, flanco e perna. A queda populacional de fibras finas ao pentear foi significativa (p < 0,05) em junho-setembro, máxima em agosto, coincidindo com as maiores quantidades de fibras finas e comprimento do pavio, enquanto o diámetro médio não variou significativamente durante o ano (p < 0,05). Os caprinos apresentaram muda visível a partir de Setembro, completando-a em Outubro-Janeiro, a maioria das quais com início nas regiões do pescoço e do dorso. Tendo em conta propostas como a da Austrália de tosquia em Julho, infere-se deste trabalho que a recolha de caxemira sem perdas significativas pode ser adiada de acordo com as variações climáticas até Agosto.

RESUMEN Introducción: El acné vulgar es la enfermedad más frecuente en adolescentes y adultos jóvenes; constituye un estado obstructivo e inflamatorio crónico de folículos pilosebáceos, caracterizado por la formación de lesiones inflamatorias. Objetivo: Identificar los factores de riesgo y las comorbilidades asociados al acné vulgar de grados I y II y su impacto psicosocial. Métodos: Se realizó un estudio observacional, descriptivo y transversal de 50 pacientes con acné vulgar de grados I y II, atendidos en el Hospital General Docente Dr. Juan Bruno Zayas Alfonso de Santiago de Cuba, desde enero de 2018 hasta igual periodo de 2020. Se valoraron los factores de riesgo y las comorbilidades asociados a la dermatosis, así como el tiempo de aparición de estos. Resultados: En la serie predominaron el grupo etario de 18-24 años de edad y el sexo femenino (60,0 %, respectivamente), la ansiedad (58,0 %), el estado seborreico de la piel y los hábitos tóxicos (44,0 % en cada caso). También primaron el nivel de escolaridad de técnico medio y el color de la piel mestizo (60,0 % cada uno), el estado civil acompañado (44,0 %), la procedencia urbana (88,0 %), los afectados con evolución de la enfermedad entre 4 a 12 meses, sin antecedentes patológicos familiares de esta, y los trastornos endocrinos como las comorbilidades asociadas a la dermatosis. Conclusiones: Una buena parte de los pacientes presentaron, como factores de riesgo, algún episodio emocional de ansiedad y estado seborreico de la piel relacionado con el acné, los cuales estuvieron asociados a comorbilidades endocrinometabólicas.

ABSTRACT Introduction: Common acne is the most frequent disease in adolescents and young adults; it constitutes a chronic obstructive and inflammatory state of pilosebaceous follicles, characterized by the formation of inflammatory lesions. Objective: To identify the risk factors and comorbidities associated to grade I and II common acne and its psychosocial impact. Methods: An observational, descriptive and cross-sectional study of 50 patients with grade I-II common acne was carried out; they were assisted at Dr. Juan Bruno Zayas Alfonso Teaching General Hospital in Santiago de Cuba, from January, 2018 to the same period in 2020. The risk factors and comorbidities associated with the dermatoses were valued, as well as the onset time of them. Results: In the series there was a prevalence of the 18-24 age group and the female sex (60.0%, respectively), the anxiety (58.0%), seborrheic state of the skin and toxic habits (44.0% each one). Also, the school level of technician and mixed race (60.0% each one), accompanied as marital status (44.0%), the urban origin (88.0%), as well as those affected with evolution of the disease between 4 to 12 months, without family pathological history, as well as endocrine disorders as the comorbidities associated with the dermatoses. Conclusions: A great part of the patients presented, as risk factors, some emotional event of anxiety and seborrheic state of the skin related to the acne, which were associated with endocrine-metabolic comorbidities.