SUMMARY: In this study we describe the functional morphology of Cornu aspersum (Helix aspersa), spermatozoa using light, scanning (SEM) and transmission electron (TEM) microscopies. The studies were performed with sperm located in the frozen hermaphroditic duct. Our results showed that the head presents ...
SUMMARY: This study aimed at clarifying the impact of long-term prenatal and postnatal exposure to exogenous progesterone on sperm production and function, relative sex organs weights, and the levels of the relevant hormones in rats. Sixty male Wistar rats were included and classified into three groups (...
Purpose: The aim of this study was to determine the protective and antioxidative effects of intensive exercise on streptozotocin (STZ)-induced testicular damage, apoptotic spermatognial cells death, and oxidative stress. Methods: 36 male Sprague Dawley rats were divided into three groups: control, diabet...
Awareness of the physiological changes that occur when animals are subjected to climatic changes that are considered stressful is essential to maintain animal welfare and to be able to exploit their reproductive potential efficiently and rationally. The present study was carried out to evaluate climatic ...
OBJETIVO: El objetivo de este trabajo fue establecer el efecto de la borra de café sobre la movilidad y los parámetros funcionales de los espermatozoides humanos in vitro. MATERIALES Y MÉTODOS: La borra de café, un subproducto obtenido en establecimientos especializados en la preparación de café s...
CASE STUDY 40-year-old male patient and 32-year-old female partner, with a history of primary infertility of two years duration. The workup revealed idiopathic mild oligoasthenotheratozoospermia, and no apparent female infertility factors. The couple has failed three intrauterine insemination (IUI) cycle...
Abstract In this work, the seminal parameters of P. mesopotamicus were evaluated fresh and after cryopreservation, focusing on the sperm variables that affect the rates of fertilization, hatching and post-hatching parameters such as larval survival and morphology. The semen and oocytes from the animals ...
ABSTRACT Introduction Chronic hyperglycemia is caused by diabetes mellitus-committed genital morphophysiology, and oxidative stress is one of the main factors involved in this process. Alpha lipoic acid (ALA) can prevent metabolic and morphological changes in diabetic individuals. Objectives In prese...
Antioxidantes/farmacología,
Diabetes Mellitus Experimental/patología,
Diabetes Mellitus Experimental/fisiopatología,
Epidídimo/efectos de los fármacos,
Epidídimo/patología,
Inmunohistoquímica,
Distribución Aleatoria,
Ratas Wistar,
Reproducibilidad de los Resultados,
Células de Sertoli,
Recuento de Espermatozoides,
Motilidad Espermática/efectos de los fármacos,
Espermatogénesis/efectos de los fármacos,
Espermatogénesis/fisiología,
Espermatozoides/efectos de los fármacos,
Espermatozoides/fisiología,
Testículo/efectos de los fármacos,
Testículo/patología,
Testículo/fisiopatología,
Ácido Tióctico/farmacología
Abstract Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859) is a potential vector of Chagas's disease and the comprehension of its reproductive biology is an important tool to control this insect. In the reproductive tract of female insects, the spermatheca plays a crucial role storing male sperm...
ABSTRACT Purpose To assess the impact of sperm retrieval on the gonadal function of rats with impaired spermatogenesis by comparing testicular sperm extraction (TESE) to aspiration (TESA). The efficacy of these procedures to sperm obtainment was also compared. Materials and Methods A pilot study showed...
Modelos Animales,
Orquidopexia/métodos,
Proyectos Piloto,
Distribución Aleatoria,
Ratas Wistar,
Motilidad Espermática/fisiología,
Recuperación de la Esperma/efectos adversos,
Espermatogénesis/fisiología,
Espermatozoides/fisiología,
Testículo/fisiología,
Testículo/cirugía,
Testosterona/biosíntesis
