Abstract Many aspects of sex change in reef fishes have been studied, including behavior and social organization. However, gonad histology remains the most robust way to identify sexual patterns in fishes. Some uncommon tissues remain poorly described, such as the accessory gonadal structures found in sp...
ABSTRACT Objectives: To assess the incidence of anatomical anomalies in patients with retractile testis. Materials and Methods: We studied prospectively 20 patients (28 testes) with truly retractile testis and compared them with 25 human fetuses (50 testes) with testis in scrotal position. We analyzed ...
Criptorquidismo/complicaciones,
Criptorquidismo/embriología,
Criptorquidismo/cirugía,
Epidídimo/anomalías,
Epidídimo/cirugía,
Feto/embriología,
Edad Gestacional,
Estudios Prospectivos,
Hidrocele Testicular/complicaciones,
Hidrocele Testicular/cirugía,
Testículo/anomalías,
Testículo/embriología
ABSTRACT PURPOSE: To compare the measurement of the testicular volume of Wistar rats using a caliper and ultrasonography. METHODS: Forty Wistar rats were randomly assigned into four groups. A tensile force of 1.6 Newton (N) and 1.0 N was applied to the right spermatic cord in group I and group II, res...
ABSTRACT Objectives To confirm if a real inner descend of testis occurs, correlating the testicular position with fetal parameters and analyzing the position of the testes relative to the internal ring. Material and Methods Twenty nine human fetuses between 13 and 23 weeks post conception (WPC) were ...
Abdomen/anatomía & histología,
Abdomen/embriología,
Largo Cráneo-Cadera,
Criptorquidismo/embriología,
Peso Fetal,
Feto/anatomía & histología,
Feto/embriología,
Edad Gestacional,
Riñón/anatomía & histología,
Riñón/embriología,
Modelos Lineales,
Segundo Trimestre del Embarazo,
Testículo/anatomía & histología,
Testículo/embriología
ABSTRACT PURPOSE: To investigate the protective effect of metformin on testicular ischemia/reperfusion (I/R) injury in rats. METHODS: Eighteen adult male Wistar rats were randomly divided into three experimental groups (n=6), as follows: Sham, I/R, and Metformin. 1-hour ischemia was induced by the left...
Metformina/farmacología,
Sustancias Protectoras/farmacología,
Daño por Reperfusión/prevención & control,
Testículo/irrigación sanguínea,
Malondialdehído/metabolismo,
Modelos Animales,
Estrés Oxidativo/efectos de los fármacos,
Peroxidasa/metabolismo,
Distribución Aleatoria,
Ratas Wistar,
Daño por Reperfusión/metabolismo,
Superóxido Dismutasa/metabolismo,
Testículo/metabolismo
Foram utilizadas as gônadas e vias espermáticas de cinco animais machos, adultos em fase reprodutiva, da espécie Metachirus nudicaudatus Geoffroy 1803, única espécie do gênero, para descrever a morfologia do escroto, do testículo e das vias espermáticas. O Metachirus possui escroto pré-peniano e...
A coloração pela prata das regiões organizadoras de nucléolos (NORs) é caracterizada por marcar proteínas ligadas ao ácido ribonucleico ribossômico, avaliando a proliferação em células normais ou neoplásicas. Objetivou-se estudar, em testículos de ovinos obtidos em matadouro, a validade do u...
Cisplatin is an anti-cancer drug used in chemotherapy. One of the limiting side effects of cisplatin is decreasing genital gland function, azoospermia and oligospermia. Tribulus terrestris (TT) has been used as an aphrodisiac. The present study amid to investigate protective effect of TT hydroalcoholic e...
Cisplatino/toxicidad,
Tribulus,
Etiquetado Corte-Fin in Situ,
Ratones Endogámicos BALB C,
Análisis de Varianza,
Apoptosis/efectos de los fármacos,
Extractos Vegetales/farmacología,
Testículo/efectos de los fármacos,
Sustancias Protectoras/farmacología,
Antineoplásicos/toxicidad,
Túbulos Seminíferos/efectos de los fármacos
BACKGROUND: Gossypol is a chemical present in the seeds of cotton plants (Gossypium sp.) that reduces fertility in farm animals. Vitamin E is an antioxidant and may help to protect cells and tissues against the deleterious effects of free radicals. The aim of this study was to evaluate the mechanisms of ...
Anticonceptivos Masculinos/farmacología,
Fertilidad/efectos de los fármacos,
Gosipol/farmacología,
Vitamina E/farmacología,
Gosipol/efectos adversos,
Peroxidación de Lípido/efectos de los fármacos,
Estrés Oxidativo/efectos de los fármacos,
Espermatozoides/efectos de los fármacos,
Glutatión Peroxidasa,
Glutatión Reductasa,
Malondialdehído,
Ratas Wistar,
Testículo/efectos de los fármacos
