ABSTRACT BACKGROUND: Acute kidney failure is a serious consequence of coronavirus disease 2019 (COVID-19). OBJECTIVES: To identify the prevalence of COVID-19, kidney failure, frequency of death, and associated factors in patients receiving intensive care. DESIGN AND SETTING: Analytical cross-sectional study conducted in the intensive care unit (ICU) of a medium-sized philanthropic general hospital in center-west Minas Gerais. METHODS: Adults and older individuals who underwent real-time polymerase chain reaction testing for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) were evaluated by the nephrology team. RESULTS: Among the 176 patients, the prevalence of COVID-19 and acute kidney injury (AKI) were 103 (58.5%) and 132 (75%), respectively, and 44 (25%) had chronic kidney disease (CKD) and 16 (15,5%) were positive for SARS-CoV-2. In the Charlson index classification, which estimates the risk of death, a statistically significant difference was identified in the percentages of groups with and without COVID-19 for indices 0, 1, and 2. There was a significant association between kidney disease and ICU mortality (P < 0.05). Patients with CKD had fewer fatal outcomes (13/97, 13.4%) than those with AKI (85/97, 87.6%). CONCLUSIONS: COVID-19 rates remained high long after diagnosis and prevention of SARS-CoV-2 infection. In addition, a higher death rate among patients who developed AKI, whose prevalence was also greater than that in the national literature, regardless of the presence of COVID-19, revealed a worrying scenario and corroborated the need for early and judicious approaches to preserve the lives of patients with AKI admitted to intensive care units. BACKGROUND 201 COVID19. COVID19 COVID 19 . (COVID-19) OBJECTIVES COVID19, 19, SETTING crosssectional cross sectional (ICU mediumsized medium sized centerwest center west Gerais METHODS realtime real time SARSCoV2 SARSCoV SARS CoV (SARS-CoV-2 team RESULTS 17 COVID-1 (AKI 10 58.5% 585 58 5 (58.5% 13 75%, 75 75% , (75%) respectively 4 25% 25 (25% (CKD 1 15,5% 155 15 (15,5% SARSCoV2. classification 0 P 0.05. 005 0.05 05 0.05) 13/97, 1397 97 (13/97 13.4% 134 85/97, 8597 85 (85/97 87.6%. 876 87.6% 87 6 87.6%) CONCLUSIONS SARS-CoV- infection addition literature units 20 COVID1 (COVID-19 (SARS-CoV- COVID- 58.5 (58.5 7 (75% (25 15,5 (15,5 00 0.0 13/97 139 9 (13/9 13.4 85/97 859 8 (85/9 87.6 SARS-CoV (COVID-1 (SARS-CoV 58. (58. (75 (2 15, (15, 0. 13/9 (13/ 13. 85/9 (85/ 87. (COVID- (58 (7 ( (15 13/ (13 85/ (85 (COVID (5 (1 (8

RESUMO Introdução: retransplante é o único tratamento viável para pacientes com perda irreversível do enxerto. O objetivo deste estudo foi analisar as indicações e resultados do retransplante hepático em três centros médicos. Métodos: foram incluídos no estudo 66 pacientes submetidos a retransplante hepático no período de setembro de 1991 a dezembro de 2021. Foi realizada uma análise retrospectiva avaliando dados demográficos, clínicos, diagnóstico primário dos pacientes, indicações e intervalo de tempo para retransplante, complicações e sobrevida do paciente. Resultados: de um total de 1.293 transplantes primários de fígado realizados, 70 necessitaram de um ou mais retransplantes de fígado. A principal indicação de transplante primário foi cirrose por hepatite C (21,2%). A trombose da artéria hepática foi a principal causa de retransplante (60,6%), sendo que quase metade (46,9%) dos retransplantes ocorreu dentro de 30 dias do procedimento inicial. O tempo médio de sobrevivência após retransplante de fígado foi de 89,1 meses, com intervalo de confiança de 54 a 124,2. A taxa de sobrevivência de 1,5 e 10 anos após o retransplante de fígado foi de 48,4%, 38% e 30,1%, respectivamente. Gênero masculino, disfunção primária do enxerto como causa de retransplante, tempo operatório prolongado e maior MELD foram associados a maior mortalidade. Conclusão: as taxas de mortalidade e morbidade operatórias do retransplante hepático são superiores às do primeiro transplante. Sexo masculino, disfunção primária do enxerto, tempo operatório prolongado e maior MELD foram associados a desfechos menos favoráveis. Introdução médicos Métodos 6 199 2021 demográficos clínicos paciente Resultados 1293 1 293 1.29 realizados 7 21,2%. 212 21,2% . 21 2 (21,2%) 60,6%, 606 60,6% , 60 (60,6%) 46,9% 469 46 9 (46,9% 3 inicial 891 89 89, meses 5 1242 124 124,2 15 1, 484 48 4 48,4% 38 301 30,1% respectivamente masculino Conclusão favoráveis 19 202 129 29 1.2 21,2 (21,2% 60,6 (60,6% 46,9 (46,9 8 12 124, 48,4 30,1 20 1. 21, (21,2 60, (60,6 46, (46, 48, 30, (21, (60, (46 (21 (60 (4 (2 (6 (

ABSTRACT Introduction: retransplantation is the only viable treatment for patients with irreversible graft loss. The objective of this study was to analyze the indications and outcomes of liver retransplantation in three medical centers. Methods: a total of 66 patients who underwent liver retransplantation from September 1991 to December 2021 were included in the study. A retrospective analysis was performed evaluating patients demographic, clinical, primary diagnosis, indications for and time interval to retransplantation, complications and patient survival. Results: from a total of 1293 primary liver transplants performed, 70 required one or more liver retransplant. The main indication for primary transplant was hepatitis C cirrhosis (21,2%). Hepatic artery thrombosis was the main cause of retransplantation (60,6%), with almost half (46,9%) of retransplants having occurred within 30 days from initial procedure. The average survival time after a repeat liver transplant, was 89,1 months, with confidence interval from 54 to 124,2. The 1-,5- and 10- year survival rate following liver retransplant were 48,4%, 38% and 30,1%, respectively. Male gender, primary non function as the cause for retransplant, prolonged operative time and higher MELD were associated with higher mortality. Conclusions: operative mortality and morbidity rates of liver retransplantation are higher than those of the first transplantation. Male gender, primary non function, prolonged operative time and higher MELD were associated with less favorable outcomes. Introduction loss centers Methods 6 199 202 demographic clinical diagnosis Results 129 7 21,2%. 212 21,2% . 21 2 (21,2%) 60,6%, 606 60,6% , 60 (60,6%) 46,9% 469 46 9 (46,9% 3 procedure 891 89 1 89, months 5 1242 124 124,2 1,5 15 ,5 1-,5 10 484 48 4 48,4% 38 301 30,1% respectively gender Conclusions transplantation 19 20 12 21,2 (21,2% 60,6 (60,6% 46,9 (46,9 8 124, 1, 1-, 48,4 30,1 21, (21,2 60, (60,6 46, (46, 1- 48, 30, (21, (60, (46 (21 (60 (4 (2 (6 (

ABSTRACT: We report a case of a free-ranging five-month wildcat with bilateral hind limbs paralysis since birth due to a segmental lumbar spinal cord aplasia. The species confirmation of the southern tiger cat (Leopardus guttulus) was determined by genetic sequencing. This southern tiger cat native to Brazil had autophagy in both pelvic limbs during the initial phase of hospitalization, followed by a right tibial fracture with bone exposition. Euthanasia was chosen due to animal welfare and submitted for postmortem examination. Grossly, there was an 8.5cm in-length segmental interruption of the spinal cord between the third and fifth lumbar vertebrae, with a lack of spinal cord tissue and collapsed associated dura mater. Microscopically, the representative sections of the L3 to L5 spinal cord had only .an irregular trace of gray matter adhered to the meninges (lumbar spinal cord aplasia) In the region of L6, a focally extensive, cystic, and well-defined tubular cavitation was noted dorsally to the central canal, replacing and compressing the adjacent nervous tissue (syringomyelia). Metagenomics examination did not detect any virus responsible for the presented spinal cord malformations. This seems to be the first description of segmental spinal cord aplasia reported in a wild feline. ABSTRACT freeranging free ranging fivemonth five month Leopardus guttulus sequencing hospitalization exposition Grossly 85cm cm 8 5cm inlength length vertebrae mater Microscopically L L6 extensive cystic welldefined well defined canal syringomyelia. syringomyelia . (syringomyelia) malformations feline (syringomyelia

RESUMO: O objetivo do presente relato foi descrever um caso de aplasia segmentar da medula espinhal lombar em um felino silvestre, com aproximadamente cinco meses, resgatado de seu ambiente natural, apresentando paralisia bilateral dos membros posteriores. A espécie gato-do-mato-pequeno (Leopardus guttulus) foi determinada por sequenciamento genético. Após curto período de hospitalização, iniciou autofagia de ambos os membros pélvicos, seguido de fratura com exposição óssea. Optou-se pela eutanásia e o cadáver foi encaminhado ao Setor de Anatomia Patológica da Universidade Federal Rural do Rio de Janeiro para necropsia. Macroscopicamente, havia uma interrupção segmentar grave da medula espinhal entre a terceira e a quinta vértebras lombares, medindo 8,5cm de comprimento, com resquícios de tecido nervoso e com meninges colapsadas. Ao exame histológico, em seções da medula espinhal na região de L3 a L5, .havia apenas vestígio de tecido nervoso aderido às meninges, morfologicamente compatível com substância cinzenta (aplasia de medula espinhal lombar). Na região de L6 notou-se áreas multifocais com cavitações tubulares, císticas e bem delimitadas, dorsalmente ao canal central substituindo e comprimindo o tecido nervoso adjacente (siringomielia). O exame de metagenômica não detectou qualquer vírus responsável pelas malformações da medula espinhal. Com base no histórico, sinais clínicos, necropsia e achados histológicos, o diagnóstico de aplasia segmentar grave com siringomielia foi estabelecido em um L. guttulus. RESUMO silvestre meses natural posteriores gatodomatopequeno gato mato pequeno Leopardus guttulus genético hospitalização pélvicos óssea Optouse Optou se Macroscopicamente lombares 85cm cm 8 5cm comprimento colapsadas histológico L L5 lombar. . lombar) notouse notou tubulares delimitadas siringomielia. (siringomielia) histórico clínicos histológicos (siringomielia

ABSTRACT Purpose: This study compared, through biomechanical evaluation under ventral flexion load, four surgical techniques for ventral stabilization of the atlantoaxial joint in dogs. Methods: In total, 28 identical atlantoaxial joint models were created by digital printing from computed tomography images of a dog, and the specimens were divided into four groups of seven. In each group, a different technique for ventral stabilization of the atlantoaxial joint was performed: transarticular lag screws, polyaxial screws, multiple screws and bone cement (polymethylmethacrylate–PMMA), and atlantoaxial plate. After the stabilization technique, biomechanical evaluation was performed under ventral flexion load, both with a predefined constant load and with a gradually increasing load until stabilization failure. Results: All specimens, regardless of stabilization technique, were able to support the predefined load without failing. However, the PMMA method provided significant more rigidity (p ≤ 0.05) and also best resisted the gradual increase in load, supporting a significantly higher maximum force (p ≤ 0.05). There was no statistical difference in flexural strength between the transarticular lag screws and plate groups. The polyaxial screws method was significantly less resistant to loading (p ≤ 0.05) than the other groups. Conclusions: The PMMA technique had biomechanical advantages in ventral atlantoaxial stabilization over the other evaluated methods. Purpose compared dogs Methods total 2 dog seven group polymethylmethacrylate–PMMA, polymethylmethacrylatePMMA polymethylmethacrylate–PMMA , polymethylmethacrylate (polymethylmethacrylate–PMMA) failure Results failing However p 0.05 005 0 05 0.05. . Conclusions methods (polymethylmethacrylate–PMMA 0.0 00 0.

ABSTRACT The Scientists of Tomorrow/ Cientistas do Amanhã project is an immersive science training program developed by the Program of Post-Graduation in Health Sciences at Hospital Israelita Albert Einstein. This program was conducted in partnership with Volunteering and Escola Municipal de Ensino Fundamental Professor Paulo Freire in Paraisópolis, São Paulo, Brazil. The Scientists of Tomorrow Program comprised a short training period conducted in May 2022 involving 37 students, and a long training period from August to December 2022, which included 15 students. It aimed to popularize science through practical activities; transfer knowledge to young students; sensitize and guide them to pursue academic-scientific careers; reduce stereotypes about scientific work and scientists; and help students understand the social, political, and ethical roles of science within society. All activities were led by postgraduate students and professors from our postgraduate program, physicians, nurses, physiotherapists, biomedicals, and veterinarians from Hospital Israelita Albert Einstein, as well as medical students from Faculdade Israelita de Ciências da Saúde Albert Einstein . Activities in the short training included lectures on cinema and science, strategies to combat fake news, non-violent communication, innovation, design-thinking framework, and developing a scientific project. During the long training period, discussions were focused on nanotechnology, animal research, big data, bioinformatics, meditation, blood and bone marrow donation, telemedicine, sex and sexually-transmitted infections, rehabilitation, career opportunities, and scientific integrity. In addition, practical activities were further expanded using optical and confocal microscopy, cytometry, and basic concepts regarding the structure and function of living cells. The program also included the launching of the open-air outreach Education E-natureza activity, which turned students into ambassadors of nature. In conclusion, the Scientists of Tomorrow Program was innovative and enabled young students to learn that science is a collective activity that can enhance public health. PostGraduation Post Graduation Paraisópolis Brazil 202 3 1 academicscientific academic careers scientists social political society physicians nurses physiotherapists biomedicals news nonviolent non violent communication innovation designthinking design thinking framework nanotechnology research data bioinformatics meditation donation telemedicine sexuallytransmitted sexually transmitted infections rehabilitation opportunities integrity addition microscopy cytometry cells openair open air Enatureza E natureza nature conclusion health 20 2

RESUMO Introdução: A literatura existente apresenta perspectivas variadas sobre o impacto da COVID-19 em receptores de transplante de fígado. No entanto, nenhuma pesquisa investigou especificamente o papel das diferenças de gênero na manifestação da COVID-19 entre os receptores de transplante de fígado. Este estudo pretende examinar os efeitos da COVID-19 em receptores de transplante de fígado, com foco nas diferenças de gênero na apresentação e progressão da doença. Métodos: Conduzida como um estudo de coorte histórico multicêntrico, esta pesquisa coletou registros de pacientes por meio de um questionário on-line. O principal objetivo foi avaliar a mortalidade relacionada à COVID. Além disso, foram coletados dados demográficos, clínicos e laboratoriais relativos à apresentação e progressão da doença. Resultados: O estudo incluiu um total de 283 pacientes, sendo 76 do sexo feminino e 206 do sexo masculino. O período médio de acompanhamento para os homens foi de 99 dias (IQR 38-283), enquanto para as mulheres foi de 126 dias (IQR 44-291). Foi observada uma maior prevalência de doença cardiovascular nos homens (p=0,002). As mulheres frequentemente apresentavam perda de olfato (p=0,021), enquanto os homens geralmente apresentavam febre (p=0,031). Os níveis de ALT e gama-glutamil transferase foram significativamente elevados nos homens (p=0,008 e 0,004, respectivamente). Embora tenha havido uma tendência de aumento da mortalidade nos homens, ela não alcançou significância estatística. Conclusão: Este estudo é a primeira tentativa de investigar as diferenças de gênero na COVID-19 entre os receptores de transplante de fígado. Nossos achados destacam a necessidade de uma abordagem abrangente e personalizada para tratar essa população de pacientes e ressaltam a importância de elucidar melhor a apresentação da doença nesses indivíduos. Introdução COVID19 COVID 19 COVID-1 fígado entanto Métodos multicêntrico online. online on line. line on-line disso demográficos Resultados 28 7 20 masculino 9 IQR 38283, 38283 38 , 38-283) 12 44291. 44291 44 291 . 44-291) p=0,002. p0002 p p=0,002 0 002 (p=0,002) p=0,021, p0021 p=0,021 021 (p=0,021) p=0,031. p0031 p=0,031 031 (p=0,031) gamaglutamil gama glutamil p=0,008 p0008 008 (p=0,00 0004 004 0,004 respectivamente. respectivamente respectivamente) estatística Conclusão indivíduos COVID1 1 COVID- 2 3828 3 38-283 4429 4 29 44-291 p000 p=0,00 00 (p=0,002 p002 p=0,02 02 (p=0,021 p003 p=0,03 03 (p=0,031 (p=0,0 000 0,00 382 38-28 442 44-29 p00 p=0,0 (p=0,02 (p=0,03 (p=0, 0,0 38-2 44-2 p0 p=0, (p=0 0, 38- 44- p=0 (p= p= (p

ABSTRACT Introduction: Existing literature presents varying perspectives on the impact of COVID-19 on liver transplant recipients. However, no research has specifically investigated the role of gender differences in the manifestation of COVID-19 among liver transplant recipients. This study aims to examine the effects of COVID-19 on liver transplant recipients, with a focus on gender differences in disease presentation and progression. Methods: Conducted as a multicenter historical cohort study, this research collected patient records through an online questionnaire. Assessing COVID-related mortality was the main objective. Additionally, demographic, clinical, and laboratory data pertaining to disease presentation and progression were collected. Results: The study included a total of 283 patients, of whom 76 were female and 206 were male. The median follow-up period for males was 99 days (IQR 38-283), while for females, it was 126 days (IQR 44-291). A higher prevalence of cardiovascular disease was observed in males (p=0.002). Females frequently experienced a loss of smell (p=0.021), whereas males commonly exhibited fever (p=0.031). Levels of ALT and gamma-glutamyl transferase were significantly elevated in males (p=0.008 and 0.004, respectively). Although there was a trend towards increased mortality in males, it did not reach statistical significance. Conclusion: This study is the first attempt to investigate gender differences in COVID-19 among liver transplant recipients. Our findings highlight the need for a comprehensive and personalised approach to treating this patient population and underscore the importance of further elucidating the disease presentation in these individuals. Introduction COVID19 COVID 19 COVID-1 recipients However Methods questionnaire COVIDrelated related objective Additionally demographic clinical Results 28 patients 7 20 male followup follow up 9 IQR 38283, 38283 38 , 38-283) females 12 44291. 44291 44 291 . 44-291) p=0.002. p0002 p p=0.002 0 002 (p=0.002) p=0.021, p0021 p=0.021 021 (p=0.021) p=0.031. p0031 p=0.031 031 (p=0.031) gammaglutamyl gamma glutamyl p=0.008 p0008 008 (p=0.00 0004 004 0.004 respectively. respectively respectively) significance Conclusion individuals COVID1 1 COVID- 2 3828 3 38-283 4429 4 29 44-291 p000 p=0.00 00 (p=0.002 p002 p=0.02 02 (p=0.021 p003 p=0.03 03 (p=0.031 (p=0.0 000 0.00 382 38-28 442 44-29 p00 p=0.0 (p=0.02 (p=0.03 (p=0. 0.0 38-2 44-2 p0 p=0. (p=0 0. 38- 44- p=0 (p= p= (p

ABSTRACT This study aimed to assess the effect of rootstocks (IAC 572 and IAC 766) and potassium fertilization at different concentrations (0, 75, 150 and 300 kg·ha-1 K2O) on the phenology and thermal demand of the Niagara Rosada grapevine, and to evaluate the development of chemical traits during maturation stage. The length of the main phenological stages was recorded within two production seasons. Total thermal demand was calculated using the degree-day concept. The berries’ titratable acidity and soluble solids contents were determined during maturation. Results indicated that IAC 572 and IAC 766 rootstocks along with potassium fertilization had no influence on the phenological cycle or thermal demand of the Niagara Rosada grapevine. The production cycle lasted 144 to 148 days with thermal demands ranging from 1,465.2 to 1,615.1 degree-days. For better grape quality, i.e., with a balance between soluble solids and acidity levels, it is estimated that the grape harvest is carried out around 21 to 24 days after the veraison.

ABSTRACT Introduction: Pulmonary arterial hypertension (PAH) is a low prevalence condition for which there is very little information in Peru. Various studies indicate that it generates significant costs for health systems in the world. Objective: To establish the economic burden of PAH in the Peruvian context. Methods: Information on the use of health resources was collected through consultations with clinical experts and opinion leaders. The cost information was obtained from two tariff manuals and the Observatory of Pharmaceutical Products. Results: The experts indicated that about 68% of the patients were in an intermediate stage of the disease and that sequential combination therapy is predominant in the FC III and FC IV stages, compared to earlier stages. The annual cost of PAH treatment in Peru was $ 14,842 USD (S / 25,885), where the main item were drugs (81.72%), followed by diagnosis (8.96%) and outpatient follow-up (5, 75%). Conclusion: Information on pulmonary arterial hypertension in Peru is critical for decision-makers due to the high economic impact. Furthermore, studies in this therapeutic area are relevant for disseminating knowledge of the disease to different health professionals.

RESUMEN Introducción: La hipertensión arterial pulmonar (HAP) es una condición de baja prevalencia para la que existe muy poca información en el Perú. Diversos estudios indican que genera costos importantes para los sistemas de salud en el mundo. Objetivo: Establecer la carga económica de la HAP en el contexto peruano. Métodos: La información de uso de recursos en salud se recolectó por medio de consultas a expertos clínicos y líderes de opinión. La información de costos fue obtenida de dos manuales tarifarios y del Observatorio de Productos farmacéuticos. Resultados: Los expertos indicaron que alrededor del 68% de los pacientes se encontraban en un estadio intermedio de la enfermedad y que el uso de terapia combinada secuencial es predominante en los estados FC III y FC IV, en comparación con estadios más tempranos. El costo de tratamiento anual de la HAP en el Perú fue de $14.842 USD (S/ 25.885), donde el principal rubro fueron los medicamentos (81,72%), seguido del diagnóstico (8,96%) y seguimiento ambulatorio (5,75%). Conclusión: La información sobre la hipertensión arterial pulmonar en el Perú es crítica para los tomadores de decisión, debido al alto impacto económico que conlleva. Más aún, estudios en esta área terapéutica son relevantes para la difusión del conocimiento de la enfermedad a los diferentes profesionales de la salud.

RESUMO: No Brasil, a normativa de abate humanitário está em vigência desde 2000, no entanto tal norma não contempla peixes. O objetivo deste trabalho foi estudar os parâmetros para insensibilização elétrica em Jundiá (Rhamdia quelen) e seus efeitos sobre o pH muscular e o rigor mortis. Setenta peixes foram alocados em dois grupos. No grupo 125, os peixes foram insensibilizados usando 125 Volts (V), 30 Hz, duty cycle of 90% e 1.3 Amp (A) durante 30 s; no grupo 400, os peixes foram insensibilizados com 400 V, 30 Hz, duty cycle of 27%, 0.9 A, durante 30 s. O tempo de inconsciência foi determinado por avaliação comportamental. Após o abate, 10 peixes de cada grupo foram refrigerados para mensurações de pH muscular e o índice rigor mortis (RMI) às 0, 3, 6, 24, 72 e 120 h. No grupo 125, 14.4% (5/35) dos peixes não foram efetivamente insensibilizados, em contraste com o grupo 400, em que 100% dos peixes (35/35) foram efetivamente insensibilizados. A duração da inconsciência foi significativamente maior no tratamento 400, igual a 87.7 ± 16.1 s em relação aos 66.6 ± 16.1 s no 125. Noventa por cento dos peixes atingiram o máximo rigor mortis (RMI=100%) dentro das 6 h pós-abate. A insensibilização elétrica em Jundiá parece ser possível usando parâmetros do grupo 400, devido à duração de inconsciência maior que 60 s.

ABSTRACT: In Brazil, humane slaughter regulation is in use since 2000; however it is not applied to fish. This paper studied parameters for electrical stunning using direct current waveform in South American catfish (Rhamdia quelen) and its subsequent effects on muscular pH and rigor mortis. Seventy fish were allocated into two groups. In group 125, fish were stunned using 125 Volts (V), 30 Hz, duty cycle of 90% and 1.3 Amp (A) applied for 30 s; in group 400, fish were stunned with 400 V, 30 Hz, duty cycle of 27%, 0.9 A, for 30 s. Unconsciousness time was determined through behavioural assessment. After slaughter, ten fish from each group were refrigerated for both measurements muscular pH and rigor mortis index (RMI) at 0, 3, 6, 24, 72 and 120 h. In 125, 14.4% (5/35) of fish were not effectively stunned, in contrast with 400 in which 100% of fish (35/35) were effectively stunned. The unconsciousness duration was higher in 400 group (87.7±16.1 s) in contrast with group 125 (66.6 ± 16.1 s). Until 6 h post mortem ninety percent of fish reached maximum rigor mortis (RMI=100%).

ABSTRACT Purpose To use a 3D printed poly (L-lactide) acid (PLLA) and hydroxyapatite (HA) composite as a bone substitute for reconstruction of a critical bone defect in the radius of rabbits. Methods A 1.5 cm ostectomy was performed in the radial diaphysis of 60 New Zealand white rabbits. The rabbits were divided into three groups according to surgical treatment of the bone defect (group I – control, group II – bone graft, group III – 3D PLLA). Each group was divided into four subgroups with different radiographic and histopathologic evaluation times (T1 – 15 days, T2 – 30 days, T3 – 60 days, T4 – 90 days). Results The implant group had greater clinically lameness (p = 0.02), edema (p = 0.007), pain (p = 0.04) and more complications at the surgical site (p = 0.03). Histologically, this group showed greater congestion (p = 0.04), hemorrhage (p = 0.04) and inflammation. Osteogenesis was microscopically similar between days (p = 0.54) and treatments (p = 0.17), even though radiographically, more effective bone healing occurred in the graft group (II), with more callus and bone bridge formation. Conclusions The customization of a 3D PLLA/HA scaffold was successful. However, in animals receiving the polymer-ceramic composite less bone callus and bone bridge was formed compared to the graft group.

RESUMO Irregularidade ou escassez de chuvas nas regiões semiáridas faz com que os agricultores utilizem água de baixa qualidade na irrigação das lavouras. Objetivou-se avaliar a eficiência do uso de água e qualidade pós-colheita de minimelancia ‘Sugar Baby’, em resposta a diferentes condutividades elétricas da solução nutritiva [2,5 (controle); 3,5; 4,5; 5,5; e 6,5 dS m-1], em sistema hidropônico floating. O delineamento experimental foi o inteiramente casualizado, com quatro repetições. Avaliaram-se o consumo hídrico, produção, eficiência do uso de água e variáveis qualitativas e físico-químicas dos frutos. O consumo hídrico total das plantas durante o ciclo variou entre 43 (6,5 dS m-1) e 54 (2,5 dS m-1) L planta-1 entre os tratamentos, com eficiência do uso de água de 0,031 kg L-1. As maiores reduções pela salinidade da solução nutritiva foram observadas para espessura da casca e massa dos frutos (8,80 e 5,69 %, respectivamente, por incremento unitário em dS m-1). A salinidade da solução nutritiva não influenciou o teor de sólidos solúveis e índice de maturação dos frutos, porém teve efeito negativo sobre o pH e a acidez titulável.

ABSTRACT Irregularity or shortage of rainfall in semi-arid regions forces farmers to use low-quality water to irrigate crops. The present study aimed to assess the water-use efficiency and post-harvest quality of ‘Sugar Baby’ mini watermelon in response to different electrical conductivities of the nutrient solution [2.5 (control), 3.5, 4.5, 5.5 and 6.5 dS m-1], in a floating hydroponic system. The experimental design was completely randomized, with four replicates. The water consumption, production and water-use efficiency were evaluated, as well as qualitative and physico-chemical variables of the fruits. The total water consumption of the plants during the crop cycle varied between 43 (6.5 dS m-1) and 54 (2.5 dS m-1) L plant-1 among the treatments, with water-use efficiency of 0.031 kg L-1. The greatest reductions due to the nutrient solution salinity were observed for the rind thickness and fruit mass (8.80 and 5.69 %, respectively, per unit increase in dS m-1). The salinity of the nutrient solution did not influence the soluble solids content and fruit maturity index, but it had a negative effect on the pH and titratable acidity.

RESUMO A melancia tem um papel importante no agronegócio brasileiro. O objetivo do presente trabalho foi avaliar o efeito de diferentes manejos de irrigação e níveis de salinidade da água de irrigação, nas principais características produtivas e de pós-colheita de minimelancia (Citrullus lanatus) cv. ‘Sugar Baby’. O experimento foi conduzido em casa de vegetação em delineamento experimental inteiramente casualizado, arranjado em esquema fatorial 2 x 4, com quatro repetições. Os tratamentos consistiram de dois tipos de manejo de irrigação (gotejamento convencional e por pulsos) e quatro níveis salinos da solução nutritiva de fertigação (2,5; 4,5; 5,5; 6,5 dS m-1). O tratamento controle correspondeu à condutividade elétrica da solução nutritiva preparada com água de abastecimento local. A lâmina de irrigação foi calculada a partir do produto da evapotranspiração de referência e o coeficiente de cultivo. Os números de pulsos foram definidos e fracionados em função da demanda atmosférica. A salinidade da solução de fertigação afeta algumas variáveis de produção, mas não reduz a qualidade dos frutos de minimelancia cv. ‘Sugar Baby’. O manejo de irrigação por pulsos mostra melhores resultados em baixa salinidade, enquanto o manejo por gotejamento convencional é mais adequado para alta salinidade (6,5 dS m-1).

ABSTRACT Watermelon plays an important role in Brazilian agribusiness. The objective of present study was to evaluate the effect of different irrigation managements and water salinity levels, on the main productive and postharvest characteristics of mini-watermelon (Citrullus lanatus) cv. ‘Sugar Baby’. The experiment was conducted in a greenhouse in a completely randomized design, arranged in a 2 x 4 factorial scheme, with four replicates. The treatments consisted of two types of irrigation management (conventional and pulse) and four saline levels of nutrient solution of fertigation (2.5; 4.5; 5.5; 6.5 dS m-1). The control treatment corresponded to the electrical conductivity of the nutrient solution prepared with local supply water. The irrigation depth was calculated by the product of reference evapotranspiration and crop coefficient. The number of pulses were defined and fractionated according to the atmospheric demand. The salinity of the fertigation solution affects some variables of the production, but does not reduce the quality of the mini-fruit cv. ‘Sugar Baby’. The management of pulse irrigation shows better results in low salinity, while conventional drip management is more suitable for high salinity (6.5 dS m-1).

SUMMARY Food supplements are easily acquired and used in various countries. Silymarin has been indicated for diseases of the liver and Chromium picolinate has been indicated for body weight loss and for the improvement of glycemic index. The objective of the present study was to assess the effects of short-term treatment with a combination of silymarin (50 mg/kg) and chromium picolinate (5 µg/kg) on the standard glibenclamide treatment (10 mg/kg) of rats with induced diabetes. DM2 was induced with streptozotocin. Experimental groups of rats: healthy control group, glibenclamide diabetic group, silymarin diabetic group, and silymarin, chromium picolinate and glibenclamide group. After 10 days of oral treatment, we determined body weight, fasting glycemia, glycemia 1 h after gastric gavage with sucrose, and AST and ALT transaminases. Statistical analysis of the data indicated that there was no change in body weight or fasting glycemia, but that glycemia increased after gavage with sucrose in the group submitted to combined therapy. Thus, we concluded that the combination of silymarin and chromium picolinate reduced the efficacy of glibenclamide in the short term, although the two substances had a protective effect on the liver as observed by the reduction of blood transaminase levels.

RESUMO Suplementos alimentares são de fácil aquisição e uso em diversos países. A silimarina tem sido indicada para desordens hepáticas e o picolinato de cromo tem sido utilizado para perda de peso corporal e melhoria do índice glicêmico. O objetivo deste trabalho foi avaliar os efeitos do tratamento utilizando uma combinação de silimarina (50 mg/kg) e picolinato de cromo (5 µg/kg) sobre o tratamento com glibencla-mida (10 mg/kg) em ratos com diabetes induzida com estreptozotocina. Os grupos experimentais foram: grupo controle sadio, grupo diabético glibenclamida, grupo diabético silimarina e grupo diabético silimarina, picolinato de cromo e glibencla-mida. Após 10 dias de tratamento via oral, determinou-se o peso corpóreo, glicemia de jejum, glicemia após uma hora de gavagem gástrica com sacarose e transaminases hepáticas. A análise estatística dos dados indicou que não ocorreu alteração significativa no peso corpóreo e na glicemia de jejum, mas ocorreu aumento significativo dos níveis glicêmicos no grupo diabético silimarina, picolinato de cromo e glibenclamida após a gavagem com sacarose no grupo com a terapia combinada. Portanto, conclui-se que a combinação utilizada reduziu a eicácia da glibenclamida em curto prazo, embora ambas substancias tenham exibido efeito hepatoprotetor, observado pela redução dos níveis plasmáticos de transaminases.

Resumo Objetivo Avaliar tecidos de poliéster quanto à função de barreira física contra fluidos e bactérias. Métodos Trata-se de uma pesquisa experimental laboratorial in vitro realizada em três etapas: avaliação do tempo de passagem de fluido através dos tecidos, cronometrado desde o início do escoamento do fluido até a formação e queda da última gota; determinação microbiológica da carga bacteriana presente no fluido, após a sua passagem através dos tecidos; e análise das características estruturais dos tecidos por meio de microscopia eletrônica de varredura. Os dados foram submetidos aos testes de normalidade e ao teste de U de Mann–Whitney, com nível de significância de a=5%. Resultados as comparações dos tempos obtidos na primeira etapa entre os dois tipos de tecidos utilizados demonstraram diferença estatística ( p <0,001). Com relação à avaliação microbiológica, não foi observada diferença entre as cargas bacterianas após a passagem do fluido através dos tecidos, tanto para Staphylococcus aureus ( p =0,056) quanto para Pseudomonas aeruginosa ( p= 0,320). A análise por microscopia eletrônica de varredura evidenciou diferenças estruturais entre os tecidos, no entanto não foi constatada a presença bacteriana na superfície dos tecidos. Conclusão Ambos os tecidos de poliéster empregados para confecção de jalecos não apresentaram função de barreira física contra fluidos e bactérias. Assim, os resultados nos permitem especular que o jaleco de poliéster ao entrar em contato com fluidos corporais pode possibilitar a contaminação do profissional.

Abstract Objective To evaluate polyester fabrics as physical barrier function against fluids and bacteria. Methods This is an in vitro experimental laboratory research carried out in three stages: evaluation of the length of time for the fluid to pass through the fabrics, timed from the beginning of the fluid flow until the formation and fall of the last drop; microbiological determination of the bacterial load in the fluid, after its passage through the fabrics; and analysis of the structural characteristics of the fabrics by scanning in electron microscopy. The data were submitted to normality tests and the Mann–Whitney U test, with a significance level of a=5%. Results Comparisons of length of time in the first stage between the two types of fabrics used showed a statistical difference ( p <0.001). Regarding the microbiological evaluation, there was no difference among bacterial loads after the fluid passed through the fabrics, both for Staphylococcus aureus ( p =0.056) and Pseudomonas aeruginosa ( p =0.320). The analysis by scanning electron microscopy showed structural differences between the fabrics, however, there were no bacteria on the fabric surface. Conclusion Both polyester fabrics used to make white coats did not work as a physical barrier against fluids and bacteria. Thus, the results allowed us to speculate that the polyester coat when in contact with body fluids may allow contamination of the professional.

Resumen Objetivo Evaluar telas de poliéster con relación a la función de barrera física contra fluidos y bacterias. Métodos Se trata de un estudio experimental de laboratorio in vitro realizado en tres etapas: evaluación del tiempo de pasaje del fluido a través de las telas, cronometrado desde el inicio del derrame del fluido hasta la formación y caída de la última gota; determinación microbiológica de la carga bacteriana presente en el fluido después del pasaje a través de las telas; y análisis de las características estructurales de las telas mediante microscopio electrónico de barrido. Con los datos obtenidos se realizaron las pruebas de normalidad y la prueba U de Mann-Whitney, con nivel de significación de a=5%. Resultados La comparación de los tiempos obtenidos en la primera etapa entre los dos tipos de telas utilizados demostró diferencia estadística ( p <0,001). Respecto a la evaluación microbiológica, no se observó diferencia entre las cargas bacterianas después del pasaje del fluido a través de las telas, tanto de Staphylococcus aureus ( p =0,056) como de Pseudomonas aeruginosa ( p= 0,320). El análisis mediante microscopio electrónico de barrido constató diferencias estructurales entre las telas; sin embargo, no se observó la presencia bacteriana en la superficie de las telas. Conclusión Las dos telas de poliéster empleadas para la confección de batas médicas no presentan función de barrera física contra fluidos y bacterias. De esta forma, los resultados nos permiten suponer que la bata médica de poliéster, al entrar en contacto con fluidos corporales, puede posibilitar la contaminación del profesional.

Abstract Objective To evaluate polyester fabrics as physical barrier function against fluids and bacteria. Methods This is an in vitro experimental laboratory research carried out in three stages: evaluation of the length of time for the fluid to pass through the fabrics, timed from the beginning of the fluid flow until the formation and fall of the last drop; microbiological determination of the bacterial load in the fluid, after its passage through the fabrics; and analysis of the structural characteristics of the fabrics by scanning in electron microscopy. The data were submitted to normality tests and the Mann–Whitney U test, with a significance level of a=5%. Results Comparisons of length of time in the first stage between the two types of fabrics used showed a statistical difference ( p <0.001). Regarding the microbiological evaluation, there was no difference among bacterial loads after the fluid passed through the fabrics, both for Staphylococcus aureus ( p =0.056) and Pseudomonas aeruginosa ( p =0.320). The analysis by scanning electron microscopy showed structural differences between the fabrics, however, there were no bacteria on the fabric surface. Conclusion Both polyester fabrics used to make white coats did not work as a physical barrier against fluids and bacteria. Thus, the results allowed us to speculate that the polyester coat when in contact with body fluids may allow contamination of the professional.

Resumen Objetivo Evaluar telas de poliéster con relación a la función de barrera física contra fluidos y bacterias. Métodos Se trata de un estudio experimental de laboratorio in vitro realizado en tres etapas: evaluación del tiempo de pasaje del fluido a través de las telas, cronometrado desde el inicio del derrame del fluido hasta la formación y caída de la última gota; determinación microbiológica de la carga bacteriana presente en el fluido después del pasaje a través de las telas; y análisis de las características estructurales de las telas mediante microscopio electrónico de barrido. Con los datos obtenidos se realizaron las pruebas de normalidad y la prueba U de Mann-Whitney, con nivel de significación de a=5%. Resultados La comparación de los tiempos obtenidos en la primera etapa entre los dos tipos de telas utilizados demostró diferencia estadística ( p <0,001). Respecto a la evaluación microbiológica, no se observó diferencia entre las cargas bacterianas después del pasaje del fluido a través de las telas, tanto de Staphylococcus aureus ( p =0,056) como de Pseudomonas aeruginosa ( p= 0,320). El análisis mediante microscopio electrónico de barrido constató diferencias estructurales entre las telas; sin embargo, no se observó la presencia bacteriana en la superficie de las telas. Conclusión Las dos telas de poliéster empleadas para la confección de batas médicas no presentan función de barrera física contra fluidos y bacterias. De esta forma, los resultados nos permiten suponer que la bata médica de poliéster, al entrar en contacto con fluidos corporales, puede posibilitar la contaminación del profesional.

Resumo Objetivo Avaliar tecidos de poliéster quanto à função de barreira física contra fluidos e bactérias. Métodos Trata-se de uma pesquisa experimental laboratorial in vitro realizada em três etapas: avaliação do tempo de passagem de fluido através dos tecidos, cronometrado desde o início do escoamento do fluido até a formação e queda da última gota; determinação microbiológica da carga bacteriana presente no fluido, após a sua passagem através dos tecidos; e análise das características estruturais dos tecidos por meio de microscopia eletrônica de varredura. Os dados foram submetidos aos testes de normalidade e ao teste de U de Mann–Whitney, com nível de significância de a=5%. Resultados as comparações dos tempos obtidos na primeira etapa entre os dois tipos de tecidos utilizados demonstraram diferença estatística ( p <0,001). Com relação à avaliação microbiológica, não foi observada diferença entre as cargas bacterianas após a passagem do fluido através dos tecidos, tanto para Staphylococcus aureus ( p =0,056) quanto para Pseudomonas aeruginosa ( p= 0,320). A análise por microscopia eletrônica de varredura evidenciou diferenças estruturais entre os tecidos, no entanto não foi constatada a presença bacteriana na superfície dos tecidos. Conclusão Ambos os tecidos de poliéster empregados para confecção de jalecos não apresentaram função de barreira física contra fluidos e bactérias. Assim, os resultados nos permitem especular que o jaleco de poliéster ao entrar em contato com fluidos corporais pode possibilitar a contaminação do profissional.