Late reproductive analysis in rat male offspring exposed to nicotine during pregnancy and lactation.

We previously observed that nicotine, administered to rats (Wistar) during pregnancy and lactation periods, provokes, in the progeny, late morphofunctional alterations in Leydig cell, body weight increase in adulthood (90 days post partum, dpp) as well as seminiferous epithelium injury. Aiming to investigate whether the spermatogenic damage previously observed in adult progenies from pregnant and lactating nicotine-exposed rat dams are maintained or whether it is worsened in older rats, we analyzed the morphological testicular alterations after up to two complete periods of spermatogenesis (53 days each), spermatic parameters, and sperm DNA fragmentation. Pregnant and lactating rats were nicotine-exposed (2 mg/kg/day) through an osmotic minipump implanted on the first day of pregnancy and replaced after birth. Absolute Control (no minipump) and Sham Control (minipump without nicotine) groups were established. The offspring were killed at 90, 143, and 196 dpp. Significant alterations in morphometric and stereological testicular parameters, such as concentration of sperm number, daily sperm production, and plasma and intratesticular levels of cholesterol and testosterone were not observed in nicotine-exposed rats. Testicular histopathological analysis showed small intraepithelial vacuolization and an accentuated germ cell desquamation in exposed rats. However, the offspring from nicotine-exposed dams exhibited higher frequency of morphologically abnormal spermatozoa and lower sperm motility in comparison with control groups. In addition, nicotine-exposed groups showed a significant reduction in sperm mitochondrial activity and an increased sperm DNA fragmentation (Comet assay). These results indicate a late reproductive damage in the male progeny caused by maternal nicotine exposure, related to the decrease in sperm quality.

Técnica quirúrgica y resultados a corto plazo de la hernioplastía incisional intraperitoneal abierta / SurgicaI technique and short-term outcomes of open intraperitoneal incisional hernioplasty

Introduction: A review of current literature failed to find any detailed description on the surgical technique of open intraperitoneal mesh hernia repair. The aim of the present study was to describe the open surgical technique used at our institution to repair incisional hernias with intraperitoneal composite prosthesis, and the short-term outcomes including recurrence, complications and patient satisfaction with the procedure. Patients and Methods: A transversal, observational and descriptive report on open intraperitoneal hernioplasty was designed. Short-term outcomes were assessed at a transversal cut out point at a 12-month interview during the follow-up. The interview included a physical exam and a specific questionnaire inquiring over the patient's satisfaction with the procedure. Results: According to the inguinal ring location, most hernias originated between the xiphoid appendix and the umbilicus (64 percent). Mean surgical time was 2.6 hours. One or more complications presented in 11 patients (19 percent). One year after surgery there was not any recurrence. According to the patient' satisfaction questionnaire final score, 17 patients (29 percent) reported an excellent satisfaction with the procedure, 33 patients (57 percent) reported a very good satisfaction and 8 patients (14 percent) a good satisfaction. Conclusions: Intraperitoneal hernioplasty constitutes a secure option to repair incisional hernias. At short-term follow-up there were no recurrences.

Introducción: No se encuentra en la literatura ninguna descripción detallada de Ia técnica para instalación de prótesis intraperitoneales por vía abierta. El objetivo del presente estudio es describir la técnica que utilizamos en nuestra institución y Ios resultados a corto plazo de estas operaciones: recurrencia, complicaciones y satisfacción del usuario con el procedimiento. Pacientes y Método: El presente es un reporte transversal, observacional y descriptivo de la técnica de Ia hernioplastía intraperitoneal abierta y de los resultados iniciales de esta técnica tomando como punto de corte transversal el control de los 12 meses de seguimiento. El control incluyó una entrevista, examen físico y un cuestionario específico sobre satisfacción con el procedimiento. Resultados: De acuerdo a la localización del anillo herniario, la mayoría de las hernias se originaron entre la cicatriz umbilical y el apéndice xifoides (60,4 por ciento). El tiempo quirúrgico promedio fue 2,6 horas. Se presentaron una o más complicaciones en 11 pacientes (19 por ciento). Un año después de la cirugía no se encontró ninguna recurrencia. De acuerdo a la puntuación final del cuestionario de satisfacción usuaria, 17 pacientes (29 por ciento) reportaron una satisfacción excelente con el procedimiento, 33 pacientes (57 por ciento) una satisfacción muy buena y 8 pacientes (14 por ciento) una satisfacción buena. Conclusiones: La hernioplastía intraperitoneal constituye una opción segura para la reparación de hernias incisionales. En el seguimiento a corto plazo no presenta recurrencias.

Reflujo pancreáticobiliar en pacientes con colelitiasis y sin colelitiasis: estudio comparativo / Pancreaticobiliary reflux in patients with cholelithiasis and without cholelithiasis: a comparative study

Background. Pancreaticobiliary reflux is a pathologic phenomenon occurring in patients with gallstones. However, the occurrence of pancreaticobiliary reflux has not been studied in patients without gallstones. The objective of this study was to measure the bile levels of amylase and lipase in patients without gallstones submitted to cholecystectomy as part of another surgical procedure, and to compare these values with patients submitted to cholecystectomy for gallstone disease. Patients and Methods. A prospective observational comparative study was designed. A sample of 136 consecutive patients was included. Amylase and lipase levels were measured in bile. Normal serum amylase levels at our institution are 28-100 U/L and for lipase are 13-60 U/L. There are no established normal levels for pancreatic enzymes in bile. However, we considered elevated the bile amylase and lipase levels whenever they were higher than normal plasma levels. Results. One-hundred three patients (76 percent) had gallstones and 33 (24 percent) liad healthy gallbladders without gallstones. According to normal plasma levels for amylase and lipase, these enzymes in bile were elevated in 83.5 percent patients with gallstones, compared to elevated levels of amylase in 6 percent patients and lipase in 3 percent patients without gallstones. Conclusions. Pancreaticobiliary reflux is a common phenomenon in patients with gallstones and occurs sporadically in patients without gallstones.

Introducción. El reflujo pancreáticobiliar es un fenómeno patológico que ocurre en pacientes con colelitiasis. La ocurrencia de este fenómeno no ha sido estudiada en pacientes sin colelitiasis. El presente estudio tiene por objetivo medir los niveles de amilasa y lipasa en la bilis de pacientes sin colelitiasis, colecistectomizados como parte de otro procedimiento quirúrgico y comparar estos valores con pacientes colecistectomizados por colelitiasis. Pacientes y Métodos. Se diseñó un estudio observacional y comparativo. Una muestra de 136 pacientes consecutivos fue incluida. Se midieron los niveles de amilasa y lipasa en la bilis. En nuestra institución los valores normales para amilasa son 28-100 U/L y para lipasa 13-60 U/L. No se han establecido valores normales de enzimas pancreáticas en la bilis. Para efectos del presente estudio, se consideró como elevados los niveles biliares de amilasa y lipasa cuando fueron mayores a los valores plasmáticos normales. Resultados. 103 pacientes (76 por ciento) tenían colelitiasis y 33 (24 por ciento) tenían vesículas normales sin cálculos. De acuerdo a los valores plasmáticos normales de amilasa y lipasa, estas enzimas se encontraron elevadas en 83,5 por ciento de los pacientes con colelitiasis comparados con valores elevados de amilasa en 6 por ciento en pacientes sin colelitiasis y de lipasa en 3 por ciento de estos pacientes. Conclusiones. El reflujo pancreaticobiliar es un fenómeno común en pacientes con colelitiasis y ocurre esporádicamente en pacientes sin colelitiasis.

Fracturas de la tuberosidad anterior de la tibia en adolescentes: reporte de 4 casos / Fractures of the tibial anterior tuberosity in adolescents: report of four cases

Avulsion fractures of the anterior tibial tubercle are uncommon, occurring mainly in male sporting adolescents. We report four cases of acute tibial tubercle fractures. The fractures occurred in two patients after falling on their knees, a third patient presented a quadriceps contraction and in the remaining case suffered a direct blow to the knee. Acording to Ogden’s classification the fractures were stage IIA, IIB, IIIA and IIIB. In all cases treatment was open reduction and internal fixation with good results.

Las fracturas por avulsión de la tuberosidad anterior de la tibia son infrecuentes, ocurriendo principalmente en adolescentes varones durante la práctica deportiva. Se presentan cuatro casos de fracturas de la tuberosidad tibial anterior. El mecanismo de la lesión en 2 de los casos correspondió a una caída a nivel asociada a golpe de ambas rodillas, un tercer paciente presentó una contracción excéntrica del cuadriceps y en el caso restante sufrió un golpe directo en la rodilla. Las fracturas corresponden a los tipos IIA, IIB IIIA y IIIB según la clasificación de Ogden. En todos los casos el tratamiento fue reducción abierta y fijación interna con tornillos, con buenos resultados.

Sexual behaviour, sperm quantity and quality after short-term streptozotocin-induced hyperglycaemia in rats.

Studies of diabetes mellitus in the streptozotocin rat model suggest that sexual dysfunctions may result from diabetes-induced alterations of the neuroendocrine-reproductive tract axis. Our investigation was performed to better define the effects of short-term hyperglycaemia on rat epididymal sperm quantity, quality and transit time, using both natural mating and artificial in utero insemination protocols. Male rats were made diabetic with streptozotocin (sc, 40 mg/kg), whereas controls received vehicle. Sexual behaviour was tested after 15 days and sperm fertilizing ability was checked 22 days after the injection through natural mating and artificial in utero insemination. Other parameters such as daily sperm production, testosterone levels, as well as sperm morphology and motility were also investigated. Fifty per cent of the diabetic animals showed no copulatory behaviour during tests and the number of animals reaching ejaculation was smaller in the diabetic group when compared with the control group (33% vs. 83%). Diabetes resulted in decreased body and reproductive organ weights, as well as diminished sperm counts in the testis and epididymis, that were associated with diminution of plasmatic testosterone levels. After natural mating, there was a decrease in the fertility in the diabetic adult male rats (25.5%) compared with control animals (81.5%). However, distal cauda epididymal sperm from diabetic rats displayed normal fertilization ability (91.5%) using in utero insemination. There were no effects of hyperglycaemia on sperm transit time in the epididymis and on spermatogenesis. Our results indicate that diabetes mellitus produces reproductive dysfunction, but does not compromise sperm fertilizing ability in the cauda epididymis in this experimental model.

Leiomioma uterino: patología y epidemiología / Uterine leiomyoma: pathology and epidemiology

Se revisan 200 informes de biopsias con diagnóstico histopatológico de mioma uterino. El 67,3 por ciento de los casos estaba en el rango entre 41-50 años de edad. Las pacientes premenopáusicas presentaron un promedio de número de miomas casi 3 veces mayor que las postmenopáusicas. El mioma más frecuente resultó ser el intramural, con tamaño menor de 2 cm. La cervicitis crónica inespecífica del cuello uterino, fue el hallazgo más frecuente de patología cervical, con un 58,5 por ciento de los casos. Se encontró neoplasia intraepitelial en el 1,5 por ciento En 2 casos 1 por ciento , se encontró adenocarcinoma del endometrio. En el 66,5 por ciento no se evidenciaron alteraciones endometriales. En el 60,5 por ciento se extirparon uno o ambos anexos, en ningún caso se encontraron alteraciones neoplásicas malignas. En 51 casos 25,2 por ciento el mioma presentó algún tipo de degeneración, siendo la más frecuente la celular, 16 de 200, 8 por ciento considerada como presarcomatosa. Se discute la conducta clínica preoperatoria frente al análisis de estas cifras y los alcances hacia el tratamiento conservador con el uso de nuevas técnicas no ablativas