Abstract One of the crucial aspects to be considered for successful in vitro production (IVP) of embryos is the composition of the various media used throughout the stages of this reproductive biotechnology. The cell culture media employed should fulfill the metabolic requirements of both gametes during oocyte maturation and sperm development, as well as the embryo during its initial cell divisions. Most IVP protocols incorporate blood serum into the media composition as a source of hormones, proteins, growth factors, and nutrients. Numerous studies have suggested Platelet-Rich Plasma (PRP) as a substitute for fetal sera in cell culture, particularly for stem cells. Therefore, the objective of this study is to assess the potential use of PRP as a replacement for fetal bovine serum (FBS) during oocyte maturation for in vitro production of bovine embryos. During in vitro maturation (IVM), cumulus-oocyte complexes (COCs) were allocated into the following experimental groups: Group G1 (IVM medium with 5% PRP); Group G2 (MIV medium with 5% PRP and 5% SFB); Group G3 (MIV medium with 5% SFB); and Group G4 (MIV medium without either PRP or SFB). Subsequently, the cumulus-oocyte complexes were fertilized with semen from a single bull, and the resulting zygotes were cultured for seven days. Cleavage and blastocyst formation rates were assessed on days 2 and 7 of embryonic development, respectively. The quality of matured COCs was also evaluated by analyzing the gene expression of HSP70, an important protein associated with cellular stress. The results demonstrated that there were no significant differences among the experimental groups in terms of embryo production rates, both in the initial cleavage stages and blastocyst formation (except for the G4 group, which exhibited a lower blastocyst formation rate on D7, as expected). This indicates that PRP could be a cost-effective alternative to SFB in the IVP of embryos. (IVP biotechnology development divisions hormones proteins factors nutrients PlateletRich Platelet Rich (PRP cells Therefore FBS (FBS IVM, IVM , (IVM) cumulusoocyte cumulus (COCs G 5 PRP) MIV SFB) SFB. . Subsequently bull respectively HSP70 HSP stress except group D7 D expected. expected expected) costeffective cost effective HSP7

Aim Venous blood derivatives (VBDs) have been suggested as substitutes for Fetal Bovine Serum (FBS) to improve the clinical transition of cell-based therapies. The literature is not clear about which is the best VBDs substitute. The present study aimed to evaluate the influence of VBDs on cell viability and describe a new method to seed these cells in a 3D Platelet-Rich Fibrin (PRF). Methods Blood was processed to obtain Platelet-Poor Plasma from PRF (P-PRF), Human Serum (HS), Platelet-Poor Plasma from PRP (P-PRP), activated-PRP (a-PRP), and Platelet lysate (PL). Cells were supplemented with each VBD at 10% and FBS at 10% was the control. Cell viability (fibroblast 3T3/NIH) test was evaluated with MTT assay in two ways: i) cell-seeded and expanded with VBD; ii) cell-seed with FBS and expanded with VBD. To seed the Fibrin construct, cells were suspended in PBS and dropped into the blood sample before performing Choukroun’s protocol for PRF. Constructs were cultured for 7 days in VBD supplements and FBS. Histological and Immunohistochemical analysis with vimentin was performed. Cell viability was analyzed by one-way ANOVA. Results VBD’s production time was very heterogeneous. Cells expanded in HS and a-PRP has grown faster. VBD-supplemented culture media provided cell culture highly sensible to trypsin/EDTA 0.25%. Cells seeded and expanded with VBD presented viability comparable to FBS in HS, a-PRP, and P-PRP (p>0.05) and lower in P-PRF and PL groups (p<0.05). The viability of cell seed with FBS and expanded with VBD was similar between P-PRF, a-PRP, PL, and FBS (p>0.05) and lower in HS and P-PRP (p<0.005). PRF-seeded cells showed a positive expression of vimentin and were able to maintain all cells supplemented with VBD. Conclusion VBD supplements were able to maintain fibroblast cells in 2D and 3D cultures. The new method of the fibrin-cell construct was efficient to insert the cells into the fibrin network. (VBDs (FBS cellbased based therapies substitute D PlateletRich Rich . (PRF) PlateletPoor Poor PPRF, PPRF P , (P-PRF) (HS) PPRP, PPRP (P-PRP) activatedPRP activated aPRP, aPRP (a-PRP) PL. (PL) 10 control 3T3/NIH 3T3NIH TNIH 3T3 NIH T ways i cellseeded ii cellseed Choukrouns Choukroun s performed oneway one way ANOVA heterogeneous faster VBDsupplemented trypsinEDTA trypsin EDTA 025 0 25 0.25% PRP, p>0.05 p005 p 05 (p>0.05 p<0.05. p<0.05 (p<0.05) PRF, p<0.005. p0005 p<0.005 005 (p<0.005) PRFseeded cultures fibrincell network (PRF (P-PRF (HS (P-PRP (a-PRP (PL 1 3T 02 2 0.25 p>0.0 p00 (p>0.0 p<0.0 (p<0.05 p000 p<0.00 00 (p<0.005 0.2 p>0. p0 (p>0. p<0. (p<0.0 (p<0.00 0. p>0 (p>0 p<0 (p<0. p> (p> p< (p<0 (p (p<

RESUMEN Introducción: La fibrina rica en plaquetas (PRF) es un biomaterial derivado del plasma sanguíneo que ha ganado considerable atención en el ámbito de la medicina regenerativa y la odontología en particular. Objetivo: Evaluar el empleo de la fibrina rica en plaquetas en la endodoncia regenerativa. Métodos: Se realizó un estudio descriptivo, observacional y transversal en el que se empleó la metodología PRISMA 2020. La búsqueda se centró en las bases de Scielo, Pubmed, Scopus, así como documentos y sitios web que aportaron al constructo teórico de la investigación desde el año 2013 hasta el 2023. Resultados: La endodoncia regenerativa, como nuevo campo dentro de la odontología, tiene como objetivo restaurar los tejidos de la pulpa dental dañados o infectados y promover la regeneración de la dentina, las estructuras de la raíz y los tejidos circundantes. Además, busca proporcionar un tratamiento alternativo para los dientes inmaduros con ápices abiertos o dientes con necrosis pulpar y lesiones periapicales. La fibrina rica en plaquetas es un concentrado de plaquetas y factores de crecimiento obtenidos a partir de la sangre del paciente y resulta una técnica relevante en la medicina regenerativa y la odontología debido a su potencial para acelerar la curación y regeneración de tejidos. Conclusiones: La endodoncia regenerativa con el uso de la fibrina rica en plaquetas crea una matriz que respalda la migración y diferenciación de células madre, que son esenciales para la regeneración del tejido.

ABSTRACT Introduction: Platelet -rich fibrin (PRF) is a biomaterial derived from blood plasma that has gained considerable attention in the field of regenerative medicine and dentistry in particular. Objective: To evaluate the use of platelet -rich fibrin in regenerative endodontics. Methods: A descriptive, observational and transverse study was carried out in which the 2020 prism methodology was used. The search focused on the bases of Scielo, Pubmed, Scopus, as well as documents and websites that contributed to the theoretical construct of the investigation from the year 2013 until 2023. Results: Regenerative endodontics, such as the new field within dentistry, aims to restore the tissues of damaged or infected tooth pulp and promote the regeneration of dentin, root structures and surrounding tissues. In addition, it seeks to provide an alternative treatment for immature teeth with open apexes or teeth with pulp necrosis and periapical lesions. Platelet rich fibrin is a concentrate of platelets and growth factors obtained from the patient's blood and is a relevant technique in regenerative medicine and dentistry due to its potential to accelerate the healing and regeneration of tissues. Conclusions: Regenerative endodontics with the use of platelet -rich fibrin creates a matrix that supports migration and differentiation of stem cells, which are essential for tissue regeneration

RESUMEN Introducción: Por sus propiedades, las preparaciones plaquetarias son útiles en el control del crecimiento bacteriano en la piel del quemado. Objetivo: Analizar los mecanismos fisiológicos que pueden tener las plaquetas para controlar la infección cuando son aplicadas en la cura local de quemaduras. Métodos: Se realizó revisión de las publicaciones de los años 2008-2023, en inglés y español, sobre el tratamiento regenerador con plasma rico en plaquetas y el lisado de plaquetas de lesiones abiertas y cerradas con presencia de agentes infecciosos. La búsqueda se realizó en las bases de datos Medline, a través del buscador PubMed y SciELO, a través de su buscador. Se utilizó también Google Académico. Las palabras clave más empleadas fueron infección y plaquetas. Se revisaron 63 publicaciones nacionales e internacionales de las cuales 32 fueron pertinentes para este trabajo. Conclusiones: Las formulaciones ricas en plaquetas tienen acción microbicida contra un importante número de bacterias que colonizan las quemaduras y estimulan, además, la epitelización de la piel dañada.

ABSTRACT Introduction: Due to its properties, platelet preparations are useful in the control of bacterial growth in the burned skin. Objective: To analyze physiological mechanisms that platelets may have to control the infection, when applied in the local burning cure. Methods: A review of the publications of the years 2008-2023, in English and Spanish, on the regenerative treatment with platelet-rich plasm and the platelet lysate of open and closed injuries with the presence of infectious agents, were carried out. Search was carried out in Medline database, through the Pubmed, and Scielo, through its search engine; Academic Google was also used. The most used keywords were infection and platelets. 63 national and international publications were reviewed, 32 of which were relevant for this work. Conclusions: Platelet rich formulations have microbicidal action against an important number of bacteria that colonize burns, also stimulate the epithelization of damaged skin.

Abstract Objective: This study was carried out to investigate the effect of autologous platelet-rich plasma (PRP) on intra-abdominal adhesion at the cesarean section incision line in the uterus. Material and methods: As experimental animals 16 white New Zealand rabbits, 5-months-old, unmated, were used. Animals were divided into two groups the control group and PRP application group. In each group, a transverse incision was made to the uterus to mimic the cesarean section and sutured. Relaparotomy was performed 21 days after the first operation. Results: When the groups were evaluated in terms of inflammation, there was a significant difference between the two groups. When the groups were evaluated in terms of Mason’s Trichrome staining and fibrosis, There was a significant difference between groups. When the groups were evaluated in terms of vascular endothelial growth factor-1, there was also a significant difference between the groups. In an experimental rabbit uterine horn adhesion model, PRP is effective in preventing post-operative adhesion formation. Conclusions: This result may guide clinical studies using autologous PRP to prevent post-operative adhesion formation after gynecological operations.

Resumen Objetivo: Este estudio se llevó a cabo para investigar el efecto del plasma rico en plaquetas (PRP) autólogo sobre la adhesión intraabdominal en la línea de incisión de la cesárea en el útero. Material y métodos: Como animales de experimentación se utilizaron 16 conejos blancos de Nueva Zelanda, de 5 meses de edad, sin aparear. Los animales se dividieron en dos grupos como grupo de control y grupo de aplicación de PRP. En cada grupo, se hizo una incisión transversal al útero para imitar la cesárea y se suturó. La relaparotomía se realizó 21 días después de la primera operación. Resultados: Cuando los grupos se evaluaron en términos de inflamación, hubo una diferencia significativa entre los dos grupos. Cuando los grupos se evaluaron en términos de tinción MT y fibrosis, hubo una diferencia significativa entre los grupos. Cuando los grupos se evaluaron en términos de VEGF-1, también hubo una diferencia significativa entre los grupos. En un modelo experimental de adherencia al cuerno uterino de conejo, el PRP es eficaz para prevenir la formación de adherencias posoperatorias. Conclusiones: Este resultado puede guiar los estudios clínicos que utilizan PRP autólogo para prevenir la formación de adherencias postoperatorias después de operaciones ginecológicas.

Resumen Introducción: El plasma rico en plaquetas (PRP) se encuentra en desarrollo desde los años 80, asociado con aplicaciones en medicina cardíaca, traumatológica y dermatológica. El PRP es una preparación autóloga, con una concentración de plaquetas por sobre el valor normal en sangre periférica, que se obtiene a partir de su centrifugación siguiendo diferentes protocolos que fueron valorados en distintas revisiones sistemáticas. El plasma luego se activa con trombina o cloruro cálcico, o por lisis física (ultrasonido o frizado). El PRP contiene factores de crecimiento, citoquinas y proteínas de adhesión que, al aplicarse en la lesión, favorecen la hemostasia, la síntesis de tejido conectivo y la revascularización. El producto se aplica en solución o gel. Se intentaron diferentes clasificaciones del PRP para estandarizarlo, sin éxito. Se conceptualizó la receta del PRP para aplicación clínica, que presentó las siguientes características: valores altos de plaquetas, disminución de la contaminación de glóbulos rojos, presencia de neutrófilos y leucocitos para el éxito terapéutico. Protocolo y casos: Se presenta el protocolo de preparación de PRP de centrifugación única de 7 minutos a 1400 rpm, con activación por medio de gluconato de calcio según la siguiente proporción: 3 ml plasma/0.4 ml gluconato cálcico. Además, se informan tres casos de úlceras de pie diabético de nuestra institución. Conclusión: El PRP no presenta complejidad en su preparación y aplicación, por lo que es factible de realizar en el primer nivel de atención que cuente con los recursos materiales y profesionales con conocimiento en el abordaje de heridas crónicas.

Abstract Introduction: Platelet-rich plasma (PRP) has been under development since the 1980s, associated with applications in cardiac, traumatological and dermatological medicine. PRP is an autologous preparation with a platelet concentration above the normal value in peripheral blood that is obtained from its centrifugation following different protocols that were evaluated in different systematic reviews. The Plasma is then activated with thrombin or calcium chloride, or by physical lysis (ultrasound or friz). PRP contains growth factors, cytokines, and adhesion proteins that, when applied to the lesion, favor hemostasis, connective tissue synthesis, and revascularization. The product is applied in solution or gel. Different classifications of the PRP were tried to standardize it without success. The PRP recipe for clinical application was conceptualized, which presented the following characteristics: high platelet values, decreased red blood cell contamination, presence of neutrophils and leukocytes for therapeutic success. Protocol and cases: The PRP preparation protocol for single centrifugation for 7 minutes at 1400 rpm with activation through calcium gluconate are presented according to the following ratio: 3 ml plasma/0.4 ml of calcium gluconate. Three cases of diabetic foot ulcers from our institution are reported. Conclusion: The PRP does not present complexity in its preparation and application, so it is feasible to perform it in the first level of care that has the material and professional resources with knowledge in the approach to chronic wounds.

RESUMEN Introducción: El plasma rico en plaquetas es un producto derivado de la sangre, rico en péptidos y proteínas de señalización intercelular, así como citoquinas capaces de intervenir en cada una de las etapas de la regeneración de varios tejidos. Objetivo: Evaluar la efectividad del tratamiento con plasma rico en plaquetas y leucocitos en pacientes con fisura anal secundaria que asistieron a la consulta de Coloproctología del Hospital Docente Provincial Oncológico María Curie de Camagüey en el período de enero de 2020 a enero de 2023. Métodos: Se realizó un estudio cuasiexperimental. El universo lo conformaron todos los pacientes que acudieron a consulta en ese período. La muestra no probabilística intencionada la conformaron 130 pacientes adultos con diagnóstico de fisura anal secundaria que recibieron tratamiento con plasma rico en plaquetas y leucocitos. Resultados: El tiempo de cicatrización de la fisura anal permitió corroborar la efectividad del tratamiento; además, la mayoría de los pacientes evolucionaron de forma favorable. El dolor fue la complicación más visible pues presentó significación estadística al establecer la relación entre las variables. Se demostró que el tratamiento con plasma rico en plaqueta y leucocitos en pacientes con fisura anal secundaria es efectivo y seguro en la evaluación final del tratamiento. Conclusiones: Lo expuesto permite considerar que los pacientes tratados obtuvieron buenos resultados al hacer uso del plasma rico en plaquetas y leucocitos. Por consiguiente, tiene un resultado positivo en no mostrar complicaciones y una alta posibilidad de que el paciente tratado evolucione en mejor condición.

ABSTRACT Introduction: Platelet-rich plasma is a blood-derived product, rich in peptides and intercellular signaling proteins, as well as cytokines capable of intervening in each of the stages of regeneration of various tissues. Objective: To assess the effectiveness of treatment with platelet- and leucocyte-rich plasma in patients with secondary anal fissure who attended the coloproctology office at Hospital Docente Provincial Oncológico María Curie of Camagüey from January 2020 to January 2023. Methods: A quasiexperimental study was carried out, whose universe consisted of all the patients who came for consultation during that period. The nonprobabilistic purposive sample consisted of 130 adult patients with a diagnosis of secondary anal fissure who received treatment with platelet- and leucocyte-rich plasma. Results: The healing time of the anal fissure allowed corroborating the effectiveness of the treatment; in addition, most of the patients evolved favorably. Pain was the most visible complication since it presented statistical significance when the relationship between the variables were established. Treatment with platelet- and leucocyte-rich plasma in patients with secondary anal fissure proved effective and safe in the final assessment of the treatment. Conclusions: The above allows considering that the treated patients obtained good outcomes when making use of platelet- and leucocyte-rich plasma. Therefore, it has a positive outcome, not showing complications and a high possibility for the treated patient to evolve in a better condition.

RESUMEN Introducción: Las enfermedades benignas de recto son muy frecuentes en la práctica médica habitual en todos los niveles de atención de salud. Dentro de estos procesos se reconoce que la fisura anal es uno de los más comunes. Objetivo: Caracterizar a los pacientes tratados con plasma rico en plaquetas y leucocitos por fisura anal secundaria en la provincia Camagüey en el período comprendido entre septiembre del 2020 y septiembre del 2022. Métodos: Se realizó un estudio cuasiexperimental, cuyo universo lo conformaron los pacientes con el diagnóstico de fisura anal secundaria que asistieron a la consulta de Coloproctología del Hospital Provincial Docente Oncológico María Curie. Se estableció una muestra no probabilística a criterio de los autores conformada por 132 pacientes adultos, quienes recibieron tratamiento con plasma rico en plaquetas y leucocitos por fisura anal secundaria en la provincia Camagüey. Resultados: Con respecto al sexo y a la edad, se observó una mayor frecuencia del grupo de 40 a 49 años y predominó el sexo femenino. El síntoma de mayor frecuencia fue el dolor, mientras que en la etiología prevaleció la proctitis facticia. En la mayoría de los casos estudiados la fisura anal cicatrizó en menos de 15 días y en cuanto a la evaluación final del tratamiento solo la minoría empeoró. Conclusiones: La caracterización de la muestra en estudio permite afirmar que el tratamiento con plasma rico en plaquetas y leucocitos tiene beneficios para los pacientes con fistulas perianales y su calidad de vida.

ABSTRACT Introduction: Benign rectal diseases are very frequent in routine medical practice at all levels of health care. Among these processes, anal fissure is recognized as one of the most common. Objective: To characterize patients treated with platelet-rich plasma and leukocytes for secondary anal fissure in Camagüey Province between September 2020 and September 2022. Methods: A quasiexperimental study was carried out, whose universe was made up of patients with the diagnosis of secondary anal fissure who attended the coloproctology office at Hospital Provincial Docente Oncológico María Curie. A nonprobabilistic sample was established according to the authors’ criterions, made up of 132 adult patients who received treatment with platelet-rich plasma and leukocytes for secondary anal fissure in Camagüey Province. Results: Regarding sex and age, a higher frequency was observed in the group 40 to 49 years old and the female sex was predominant. The most frequent symptom was pain, while the prevailing etiology was factitious proctitis. In most of the cases under study, the anal fissure healed in less than 15 days and, regarding the final assessment of the treatment, only the minority worsened. Conclusions: The characterization of the sample under study allows to affirm that treatment with platelet-rich plasma and leukocytes has benefits for patients with perianal fistulas and their quality of life.

Abstract Background and objective. The combination of minimally invasive techniques is very common to treat aging skin. The objective of this trial is to evaluate an intensive treatment protocol for facial rejuvenation, in a single, combined and sequential session, using high intensity focused ultrasound (HIFU), fractional CO2 laser and autologous platelet rich plasma (PRP). Methods. Pilot trial to evaluate the efficacy and safety of the combined treatment in a selected sample of 15 patients (phototypes III-V) with evident signs of facial aging. Efficacy was assessed blinded by 2 independent experts by comparing photographs before treatment and 3 months later. The variables analyzed (degree of pain, laxity, global rejuvenation and satisfaction) were quantified using ordinal quantitative or qualitative scales. Safety is assessed by follow-up notes in medical records. Results. Significant improvements in laxity reduction were achieved in the upper, middle, and lower thirds of the face (p=0.026, p=0.011, p=0.003). On the scale of global aesthetic improvement, according to the expert evaluators, 14 participants (93%) consider themselves "improved" or "very improved". All patients recognized some kind of improvement, 9 indicated being "very satisfied", 3 "satisfied" and 3 "moderately satisfied". The treatment was painful, but sufficiently tolerated by the majority of patients. There were no unexpected side effects or major complications, with good postoperative recovery. In general, the patients returned to their work activities 10 days after treatment. Conclusions. The efficacy/safety profile of the tested method has been very favorable in the series investigated.

Resumen Introducción y objetivo. La combinación de técnicas mínimamente invasivas es muy frecuente para tratar el envejecimiento de la piel. El objetivo de este ensayo es evaluar un protocolo de tratamiento intensivo para rejuvenecimiento facial en una sesión única, combinada y secuencial, empleando ultrasonidos focalizados de alta intensidad (HIFU), láser de CO2 fraccionado y plasma rico en plaquetas (PRP) autólogo. Material y método. Ensayo piloto para evaluar la eficacia y seguridad del tratamiento combinado en una muestra seleccionada de 15 pacientes (fototipos III-V) con signos evidentes de envejecimiento facial. La eficacia fue evaluada de forma enmascarada por 2 expertos independientes mediante comparación de fotografías antes del tratamiento y 3 meses después. Las variables analizadas (grado de dolor, laxitud, rejuvenecimiento global y satisfacción) se cuantificaron mediante escalas ordinales cuantitativas o cualitativas. La seguridad se evaluó mediante anotaciones de seguimiento en las historias clínicas. Resultados. Obtuvimos mejorías significativas en la reducción de la laxitud en los tercios superior, medio e inferior de la cara (p=0.026, p=0.011, p=0.003). En la escala de mejoría estética global, según los evaluadores expertos, 14 participantes (93%) se consideraron “mejorados” o “muy mejorados”. Todos los pacientes reconocieron algún tipo de mejoría, 9 indicaron estar “muy satisfechos”, 3 “satisfechos” y 3 “moderadamente satisfechos”. El tratamiento fue doloroso, pero suficientemente tolerado por la mayoría de pacientes. No aparecieron efectos adversos inesperados ni complicaciones importantes, con buena recuperación postoperatoria. En general los pacientes se reincorporaron a sus actividades laborales 10 días después del tratamiento. Conclusiones. El perfil de eficacia/seguridad del método ensayado ha sido muy favorable en la serie investigada.

Introduction: Anastomotic leak rate in colorectal surgery is estimated between 4 and 20 percent. Leukocyte and and platelet-rich fibrin plasma (L-PRF) is second generation platelet concentrate whose application in colorectal anastomosis in animals has shown promising results that suppose a lower leakage rate. Aim: The objective of this study was to assess the feasibility of using L-PRF in colorectal surgery and to determine the incidence of anastomotic leak after colorectal anastomosis. Methods: This study took place in Hospital Clínico Regional de Concepción Chile, between years 2018 and 2021. A randomized and one-blinded experimental design was used, that included 106 patients that underwent end-to-end stapled colorectal anastomosis, 53 of them received L-PRF during anastomosis (experimental group). Results: Surgical indication in 79% was cancer and laparoscopic procedure was performed in 46% of patients. There were no statistically significant differences in sociodemographic nor surgery related variables. Anastomotic leak occurred in 5 patients of the control group (9.4%) and 1 patient from de experimental group (1.9%), with no statistically significant differences (p = 0.24). Conclusion: Although we did not detect significant differences among both groups, we observed a tendency favoring L-PRF treatment. We were able to stablish the safety of L-PRF use in colorectal anastomosis.

Resumen Introducción: La tasa de dehiscencia anastomótica en cirugía colorrectal se estima entre un 4% a 20%. El plasma rico en fibrina y leucocitos (PRF-L) es un concentrado plaquetario de segunda generación y su aplicación en anastomosis colorrectales en animales ha evidenciado interesantes resultados que suponen una menor tasa. El objetivo de este estudio fue evaluar la viabilidad de aplicar L-PRF en cirugía colorrectal y determinar la incidencia de fuga anastomótica después de una anastomosis colorrectal. Materiales y Métodos: El estudio tuvo lugar en el Hospital Clínico Regional de Concepción Chile, en el periodo 2018-2021. Se realizó un ensayo clínico randomizado a 1 ciego. Se incluyeron a 106 pacientes sometidos a anastomosis colorrectal termino-terminal grapada. Se formó un grupo experimental con 53 pacientes y otro control con 53 pacientes. Resultados: A todos se les realizó anastomosis termino-terminal grapada. la indicación de cirugía fue cáncer en 79% y se realizó cirugía video-laparoscópica en 46%. No hubo diferencias estadísticamente significativas en variables socio-demográficas, ni relacionadas con la cirugía. Hubo dehiscencia anastomótica en 5 pacientes (9,4%) del grupo control y 1 (1,9%) en el grupo experimental sin diferencias estadísticamente significativas (p = 0,24). Conclusiones: A pesar de que no hubo diferencias con significación estadística entre los grupos, se apreció una tendencia en favor del PRF-L. Se logró establecer la seguridad de la aplicación de PRF-L en anastomosis colorrectales.

RESUMEN: El objetivo de esta revisión sistemática fue evaluar los efectos histológicos del plasma rico en plaquetas (PRP) en la osteoartritis de la articulación temporomandibular (ATM-OA) en modelos animales. Se realizó una búsqueda sistemática en las bases de datos PubMed, WoS, EMBASE, Science Direct y SCOPUS. Los criterios de inclusión fueron estudios experimentales en modelos animales que evaluaran el uso de PRP como tratamiento para la ATM-OA con o sin artrocentesis/ artroscopia. La comparación se realizó con un grupo de control sano o con otro tratamiento. Las variables evaluadas fueron los efectos histológicos de los tratamientos, las características de los artículos primarios, las características de la muestra estudiada y el riesgo de sesgo. La búsqueda sistemática identificó 120 estudios. Finalmente se incluyeron 5 estudios en el análisis. Cuatro de los estudios mostraron una reparación estadísticamente significativa en los tejidos articulares y una mejora del grosor del cartílago en los animales tratados con PRP. El riesgo global de sesgo fue incierto. Los resultados de esta revisión sistemática sugieren que el tratamiento con PRP en la ATM-OA tiene beneficios a nivel histológico en el cartílago, el disco articular y el tejido óseo articular en modelos animales. Sin embargo, debido al escaso número de estudios y al riesgo de sesgo, se necesitan investigaciones adicionales para recomendar su uso.

SUMMARY: The aim of this systematic review was to assess the histological effects of platelet-rich plasma (PRP) on temporomandibular joint osteoarthritis (TMJ-OA) in animal models. A systematic search was performed using PubMed, WoS, EMBASE, Science Direct and SCOPUS databases. The inclusion criteria were experimental studies in animal models that evaluated the use of PRP as a treatment for TMJ-OA with or without arthrocentesis/arthroscopy. Comparison was made to a healthy control group or to other treatment. The variables evaluated were the histological effects of the treatments, characteristics of the primary articles, characteristics of the sample studied and the risk of bias. The systematic search identified 120 studies. Eventually 5 studies were included in the analysis. Four of the studies showed a statistically significant repair in joint tissues and improvement of cartilage thickness in animals treated with PRP. The global risk of bias was unclear. The results of this systematic review suggest that PRP treatment in TMJ-OA has benefits at the histological level in cartilage, articular disc and articular bone tissue in animal models. However, due to the low number of studies and the risk of bias, further research is needed to recommend its use.

Abstract: Introduction: population aging is a worldwide demographic phenomenon of the last thirty years. This increase in life expectancy leads to an increase in the incidence of degenerative diseases, mainly gonarthrosis. According to World Health Organization (WHO) estimates, 10% of the population over 60 years of age suffers from osteoarthrosis, and 40% of the population over 70 years of age suffers from gonarthrosis, Figures that could increase in the next decade. Approximately 80% of people over 65 years of age present radiographic changes with evidence of gonarthrosis, being 10-25% of the reason for medical visits at the first level of care. Treatment with intra-articular platelet rich plasma has proven to be an effective therapeutic alternative. Material and methods: a prospective, quasi-experimental, non-randomized study was carried out to compare the behavior of grade I and II gonarthrosis in 140 patients diagnosed clinically and radiologically. Separated into two groups of patients, the first group treated with non-steroidal anti-inflammatory drugs (NSAIDs) and the second group treated with intra-articular infiltration with platelet-rich plasma (PRP). The same was carried out in the Specialties Clinic No. 3 of the Cuauhtémoc Health Jurisdiction, in the orthopedics office during the year 2020. Descriptive statistics were analyzed through the elaboration of a frequency Table that allowed us to calculate the mean and standard deviation, and inferential statistics were analyzed through the χ2 test. Results: the age group most affected by gonarthrosis is 60 to 69 years of age with 43.5% of the total number of patients, being the female sex the most affected with 33.5%. Most of the patients had a body mass index that placed them as overweight and obese with 39 and 53% respectively. Pain evolved towards improvement in 92% of patients treated with platelet-rich plasma (PRP) and in 25.7% of patients treated with nonsteroidal anti-inflammatory drugs. The functional capacity of the knee joint recovered in 97% of the patients treated with PRP and in 35.7% of those treated with nonsteroidal anti-inflammatory drugs. Conclusions: treatment of grade I and II gonarthrosis with intra-articular platelet-rich plasma is more effective than treatment with non-steroidal anti-inflammatory drugs.

Resumen: Introducción: el envejecimiento poblacional es un fenómeno demográfico a nivel mundial de los últimos 30 años. Dicho aumento de la expectativa de vida conlleva a un incremento en la incidencia de enfermedades degenerativas, principalmente de gonartrosis. Según cálculos de la Organización Mundial de la Salud (OMS), se estima que 10% de la población mayor de 60 años padece de osteoartrosis, 40% de la población mayor de 70 años presenta gonartrosis, cifras que podrían aumentar en la siguiente década. Aproximadamente 80% de las personas mayores de 65 años presentan cambios radiográficos con evidencia de gonartrosis, siendo 10-25% del motivo de visita médica en el primer nivel de atención. El tratamiento con plasma rico en plaquetas intraarticular ha demostrado ser una alternativa terapéutica eficaz. Material y métodos: se realizó un estudio prospectivo, cuasiexperimental, no aleatorizado donde se comparó el comportamiento de la gonartrosis grado I y II en 140 pacientes diagnosticados clínica y radiológicamente. Separados en dos grupos de pacientes: primer grupo tratado con antiinflamatorios no esteroideos (AINEs) y el segundo grupo tratado con infiltración intraarticular con plasma rico en plaquetas (PRP). El mismo se llevó a cabo en la Clínica de Especialidades No. 3 de la Jurisdicción Sanitaria Cuauhtémoc, en la consulta de ortopedia durante el año 2020. La estadística descriptiva se analizó a partir de la elaboración de una Tabla de frecuencias que permitió calcular la media y la desviación estándar, de igual manera la estadística inferencial se analizó a través de la χ2. Resultados: el grupo de edad más afectado por gonartrosis es el de 60 a 69 años de edad con 43.5% del total de pacientes, siendo el sexo femenino el más afectado con 33.5%. La mayoría de los pacientes presentaron índice de masa corporal que los ubicaba como sobrepeso y obesos con 39 y 53%, respectivamente. El dolor evolucionó hacia una mejoría en 92% de los pacientes tratados con plasma rico en plaquetas y en 25.7% de los pacientes tratados con antiinflamatorios no esteroideos. La capacidad funcional de la articulación de la rodilla se recuperó en 97% de los pacientes tratados con plasma rico en plaquetas y en 35.7% de los tratados con antiinflamatorios no esteroideos. Conclusiones: el tratamiento de la gonartrosis grado I y II con plasma rico en plaquetas intraarticular es más efectivo que el tratamiento con antiinflamatorios no esteroideos.

Abstract The objective of this study was to map, through a scoping review, the evidence available in the literature on the use of platelet concentrates in compromised patients undergoing oral surgeries. Searches were performed in electronic databases for clinical studies with compromised patients undergoing oral surgery who used platelet concentrates. Only studies published in English were included. Two independent researchers carried out the selection of studies. The study design and objective, surgical procedure and platelet concentrate used, systemic involvement, analyzed outcome, and main results were extracted. A descriptive analysis of the data was performed. Twenty-two studies met the eligibility criteria and were included. Case series was the most frequent study design among the included studies (41.0%). In terms of systemic disability, 19 studies reported patients with cancer and related to surgical treatment 16 studies reported patients underwent treatment for osteonecrosis related to the use of the drug. The most used platelet concentrate was pure platelet-rich fibrin (P-PRF). In general, most studies recommend the use of platelet concentrates. Thus, the results of this study suggest that the evidence related to the use of platelet concentrates in compromised patients when undergoing oral surgeries is still initial. Also, most studies assessed the use of platelet concentrates in patients with osteonecrosis. map review involvement outcome extracted Twentytwo Twenty two 41.0%. 410 41.0% . 41 0 (41.0%) disability 1 drug plateletrich rich PPRF. PPRF P PRF (P-PRF) general Thus initial Also 41.0 4 (41.0% (P-PRF 41. (41.0 (41. (41 (4 (

Resumo O objetivo do estudo foi mapear, através de uma revisão de escopo, as evidências disponíveis na literatura sobre o uso de agregrantes plaquetários em pacientes comprometidos e que realizaram cirurgias odontológicas. Pesquisas foram realizadas em bases de dados por estudos clínicos com pacientes comprometidos que realizaram cirurgia odontológica e usaram agragantes plaquetários. Apenas estudos em inglês foram incluídos. Dois pesquisadores independentes realizaram a seleção dos estudos. Os seguintes dados foram extraídos: desenho do estudo, objetivo, procedimento cirúrgico, agregante plaquetário usado, envolvimento sistêmico, desfecho analisado e principais resultados. Uma análise descritiva dos dados foi realizada. Vinte e dois estudos preencheram os critérios de elegibilidade e foram incluídos. Série de casos foi o desenho de estudo mais frequente entre os estudos incluídos (41,0%). Em relação ao comprometimento sistêmico, 19 estudos reportaram pacientes com câncer e em relação ao tratamento cirúrgico, 16 estudos reportaram pacientes que realizavam tratamento para osteonecrose relacionada ao uso de medicamentos. O agregante mais utilizado foi o plasma rico em fribina (P-PRF). Em geral, maioria dos estudos recomendou o uso dos agregantes plaquetários. Assim, os resultados desse estudo sugerem que a evidência relacionada ao uso de agregantes plaquetários em pacientes comprometidos que realizam cirurgia odontológica é ainda inicial. Ainda, a maioria dos estudos avaliaram o uso de agregantes plaquetários em pacientes com osteonecrose. mapear escopo odontológicas extraídos cirúrgico usado sistêmico realizada 41,0%. 410 41,0% . 41 0 (41,0%) 1 medicamentos PPRF. PPRF P PRF (P-PRF) geral Assim inicial Ainda 41,0 4 (41,0% (P-PRF 41, (41,0 (41, (41 (4 (

ABSTRACT Background: gonarthrosis is an entity with a slow and progressive course that ends with joint destruction. The use of alternative methods, based on regenerative medicine such as the intraosseous application of platelet-rich plasma, is a therapeutic modality that relieves pain and improves the functional capacity of patients with primary gonarthrosis. Aim: to update knowledge regarding the use of platelet-rich plasma intraosseously. Methods: the search and analysis of the information was carried out in a period of four months (January 1, 2022 to April 30, 2022) and the following words were used: platelet-rich plasma and knee osteoarthritis, intraosseous injection of platelet-rich plasma. Based on the information obtained, a bibliographic review of a total of 203 articles published in the PubMed, Hinari, SciELO and Medline databases was carried out using the search engine and reference manager EndNote. Development: the main indications are mentioned, as well as the steps to carry out the procedure. The technique to be used is described as the frequency of its application. Reference is made to the main differences between the intraarticular and intraosseous routes. Outcome: the application of PRP in patients with knee osteoarthritis constitutes a variety of useful treatment. The intraosseous administration offers advantages in relation to the improvement of symptoms and signs of this disease.

RESUMEN Fundamento: la gonartrosis es una entidad de curso lento y progresivo que termina en la destrucción articular. El empleo de métodos alternativos, basados en la medicina regenerativa como el de la aplicación de plasma rico en plaquetas por vía intraósea, es un modalidad terapéutica que alivia el dolor y mejora la capacidad funcional de enfermos con gonartrosis primaria. Objetivo: actualizar los conocimientos en relación al uso del plasma rico en plaquetas por vía intraósea en gonartrosis. Métodos: la búsqueda y análisis de la información se realizó en un periodo de cuatro meses (primero de enero de 2022 al 30 de abril de 2022) y se emplearon las siguientes palabras: platelet-rich plasma and knee osteoarthritis, intraosseous injection of platelet-rich plasma. A partir de la información obtenida se realizó una revisión bibliográfica de un total de 203 artículos publicados en las bases de datos PubMed, Hinari, SciELO y Medline mediante el gestor de búsqueda y administrador de referencias EndNote. Resultados: se mencionan las principales indicaciones, así como las etapas para realizar el procedimiento. Se describe la técnica a emplear como la frecuencia de su aplicación. Se hace referencia a las principales diferencias entre las vías intrarticular e intraósea. Conclusiones: la aplicación del PRP en pacientes con gonartrosis constituye una variedad de tratamiento útil. La administración intraósea ofrece ventajas pen relación a la mejoría de los síntomas y signos de esta enfermedad.

SUMMARY OBJECTIVE: The aim of this study was to investigate the efficacy of platelet-rich plasma injection on the olfactory cleft of patients with post-COVID olfactory dysfunction lasting over 1 year, who were unresponsive to common treatments. METHODS: Patients over 18 years of age with post-COVID olfactory dysfunction over 1 year whose complaints did not improve with intranasal steroids and D-panthenol/vitamin A combination nasal sprays with olfactory rehabilitation training for 1 month were prospectively collected and randomized into two groups: intranasal platelet-rich plasma group and control group. At the end of 1 month, Connecticut Chemosensory Clinical Research Center olfaction test scores of smell detection threshold and smell identification test were compared accordingly. RESULTS: A total of 25 patients were randomized into platelet-rich plasma (n=12) and control (n=13) groups. In the platelet-rich plasma group, the mean smell detection threshold score increased from 5.63 (SD 0.68) to 6.46 (SD 0.45), and the mean smell identification test score increased from 11.42 (SD 1.17) to 15.17 (SD 0.39). In the control group, the mean smell detection threshold score changed from 5.69 (SD 0.66) to 5.77 (SD 0.70), and the mean smell identification test score changed from 11.20 (SD 1.12) to 11.85 (SD 1.57). Post-hoc analysis revealed that similar mean smell detection threshold (mean difference 0.07; p=0.994) and smell identification test (mean difference −0.50; p=0.703) scores were transformed into a significant difference between groups (smell detection threshold mean difference 0.69; p=0.037; smell identification test mean difference 3.32; p<0.001). CONCLUSION: At the end of the first month, there was a significant improvement in olfactory threshold values in the platelet-rich plasma group compared to the control group. No side effect or adverse event related to platelet-rich plasma injection was observed. OBJECTIVE plateletrich platelet rich postCOVID post COVID treatments METHODS Dpanthenol/vitamin Dpanthenolvitamin D panthenol/vitamin panthenol vitamin accordingly RESULTS 2 n=12 n12 n 12 (n=12 n=13 n13 13 (n=13 563 5 63 5.6 SD 0.68 068 0 68 646 6 46 6.4 0.45, 045 0.45 , 45 0.45) 1142 11 42 11.4 1.17 117 17 1517 15 15.1 0.39. 039 0.39 . 39 0.39) 569 69 0.66 066 66 577 77 5.7 0.70, 070 0.70 70 0.70) 1120 20 11.2 1.12 112 1185 85 11.8 1.57. 157 1.57 57 1.57) Posthoc Post hoc 0.07 007 07 p=0.994 p0994 p 994 −0.50 050 50 p=0.703 p0703 703 0.69 069 p=0.037 p0037 037 3.32 332 3 32 p<0.001. p0001 p<0.001 001 p<0.001) CONCLUSION observed Dpanthenol panthenolvitamin n=1 n1 (n=1 56 5. 0.6 06 64 4 6. 04 0.4 114 11. 1.1 151 15. 03 0.3 7 0.7 118 8 1.5 0.0 00 p=0.99 p099 99 −0.5 05 p=0.70 p070 p=0.03 p003 3.3 33 p000 p<0.00 n= (n= 0. 1. p=0.9 p09 9 −0. p=0.7 p07 p=0.0 p00 3. p<0.0 (n p=0. p0 −0 p<0. p=0 − p<0 p= p<