Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P56851 (epididymal)
 11,273 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Gossypol acetic acid could induce total infertility in male Wistar/NIN strain rats at a dose of 30 mg per kg body weight per day, for 52 days. 20 mg for 52 days and 30 mg for 38 days produced partial infertility. Highly significant correlation between parameters of infertility like reduced cauda sperm count, and implantation sites, and reduction in LDH-X activity of cauda epididymal sperm and carnitine levels in cauda epididymal fluid were observed. Testis remained unaffected.
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PMID:Dose and time related changes in LDH-X activity, epididymal carnitine levels and fertility, in gossypol-treated male rats. 356 62

Young's syndrome consists of azoospermia owing to bilateral epididymal obstruction in patients with chronic sinus and pulmonary infections. Azoospermia may be corrected by vasoepididymostomy in these patients but postoperative fertility rates are yet to be determined. Because the infertility of Young's syndrome potentially is remediable with vasoepididymostomy and because the syndrome is observed commonly by surgeons outside of this country, we report 2 cases to illustrate what may be a frequently unrecognized and potentially correctable cause of azoospermia.
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PMID:Young's syndrome: an often unrecognized correctable cause of obstructive azoospermia. 358 66

The influence of zopiclone, a non-benzodiazepine hypnotic, on male reproductivity and the recovery of the influences were examined in rats since it was found that oral administration of zopiclone to male rats produced sperm death and infertility at doses of 50 mg/kg or more. In the present study, zopiclone was administered orally by gavage at doses of 50 and 250 mg/kg once daily for 6 weeks to male rats of 8 weeks old. The rats were paired with untreated female rats at the end of the 2nd, 4th, and 6th weeks of administration and of the 2nd, 4th, and 6th weeks after termination of the administration. As the results, the copulation rates were 100% in the 50 mg/kg group, but the rate was low in the 250 mg/kg group at the end of the 2nd week of administration. The pregnancy rates of 0% and low motility and morphological abnormalities of the sperm were observed in the zopiclone-treated groups at the end of the 2nd week of administration. In the histological examination of the male reproductive organs, such changes as arrest of spermatogenesis and dilation of the epididymal ducts filled with the sperm were observed in the 250 mg/kg group at the end of the 2nd week of administration. In the recovery observation, the ability to impregnate female rats and the condition of the sperm recovered in the 50 mg/kg group at the end of the 2nd week of recovery. In the most rats of the 250 mg/kg group the ability to impregnate female rats and the condition of the sperm recovered at the end of the 4th and 6th weeks of recovery. However, in some rats of the 250 mg/kg group the ability to impregnate female rats and the condition of the sperm were still not recovered at the end of the 6th week of recovery.
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PMID:Influence of zopiclone on male reproductivity in rats. 360 85

At necropy, 20 out of 35 Mongolian gerbils (Meriones unguiculatus) with prolonged infertility at 12-30 weeks of age were found to have spontaneous hyperplasia in both seminiferous and epididymal tubules. This high incidence of hyperplasia in young gerbils is indication of possible congenital lesions and suggests the possibility of using these animals as a useful model for the further study of male infertility.
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PMID:Benign testicular hyperplasia in Mongolian gerbils (Meriones unguiculatus). 360 54

Many anti-cancer drugs cause infertility. Regional delivery of these agents is a potential method to avoid this problem. We investigated the protective effect of normothermic testicular circulatory arrest on gonadal toxicity during doxorubicin administration in the Sprague-Dawley rat. Four groups of eight rats each were used. Animals in group 1 received no treatment. Rats in group 2 were anesthetized and received a bolus of intravenous doxorubicin (6 mg/kg). In groups 3 and 4, normothermic circulatory isolation of the left testis was induced by cross-clamping of the spermatic cord and gubernaculum immediately before doxorubicin administration. This was maintained for 15 min after doxorubicin administration in group 3 and for 45 min in group 4. Cessation and return of testicular blood flow were confirmed by Doppler. On Day 56, all rats were killed and necropsied. Testicular toxicity was evaluated qualitatively by histology and quantitatively by measurement of testicular weight, sperm count, repopulation index, and epididymal index. The results indicated that 15 min of testicular circulatory isolation mitigated testicular toxicity to a small extent and that 45 min of circulatory isolation provided moderate protection against doxorubicin-induced testicular toxicity.
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PMID:Regional doxorubicin delivery reduces testicular toxicity. 362 47

Studies were undertaken to assess the effect of the total glycosides extracted from Tripterigium wilfordii Hook. f. (GTW), a ready-made Chinese herb medicine, on the fertility of both male and female rats. In male rats, GTW was given by gastric gavage at a dose of 10 mg/kg per day, 6 days a week for 8 weeks. All the treated animals became infertile. The body weight growth was normal and the mating behavior was present. There was a drastic decrease in the viability of the epididymal spermatozoa, while the decrease in the sperm density, though significant, was far less marked. Seminiferous tubular damage was minimal and no perceptible change was observed in the Leydig and the Sertoli cells. All other parameters examined, including the serum testosterone level and the histology of various organs, were normal. In female rats, GTW given orally at a dose of 50 mg/kg per day on days 1-4 or 7-9 of pregnancy did not significantly affect the fertility. It is thus concluded that non-toxic dose of GTW can cause infertility in male rats, the mechanism of which may involve and interference in the function of the epididymal and/or testicular spermatozoa; in female rats, the dose regimens employed do not have significant anti-implantation or early-pregnancy termination effect.
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PMID:Effect of Tripterigium wilfordii Hook. f. on the fertility of rats. 369 92

The effect of PMHI on the epididymis and accessory sex glands (ventral prostate, seminal vesicle, and coagulating gland) was studied in a wild rodent, the bandicoot rat. Animals were given a single subcutaneous injection of PMHI (150 mg/kg body wt) and were killed 2, 10, or 30 days later. Treatment of PMHI resulted in severe alterations in the epididymis of the bandicoot rat with no apparent effect on accessory sex glands except for a transitory decrease in epithelial height of the seminal vesicle and in peripheral acini of the ventral prostate. Changes in the epididymis included a marked involution of the caput, Zone I in particular, formation of sperm granulomata, and the distension of the "clear" cells in the caudal portion of the duct. Sperms progressively disappeared from the lumen and by Day 30, the cauda epididymis became completely azoospermic. It appears that the epididymal lesions produced by this compound may play a contributory role to induce infertility in the bandicoot rat.
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PMID:Effect of DL-6-(N-alpha-pipecolinomethyl)-5-hydroxyindane maleate (PMHI) on the reproductive system of a wild rat, Bandicota bengalensis. II. Epididymis and accessory sex glands. 369 37

We report a case of bilateral papillary cystadenoma of the epididymis thought to be a component of the von Hippel-Lindau syndrome. The patient was hospitalized initially because of infertility. He had undergone a craniotomy 2 years previously for the diagnosis of a cerebellar hemangioblastoma. Funduscopy had revealed angiomatous lesions of the left eye. The von Hippel-Lindau syndrome is discussed briefly and the importance of long-term urological followup for possible presentation of silent renal carcinoma is emphasized. Patients with bilateral epididymal papillary cystadenoma are prone to have other components of the von Hippel-Lindau syndrome, and clinical studies are indicated in all such patients.
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PMID:Bilateral papillary cystadenoma of the epididymis as a component of von Hippel-Lindau's syndrome: report of a case presenting as infertility. 396 52

To determine the effects of gossypol acetate on guinea pig epididymal and vas deferens sperm maturity and in vivo susceptibility to in vitro capacitation and the acrosome reaction, we examined spermatozoa removed from 37 animals fed gossypol acetate (10-15 mg/kg/day) for 5 to 9 weeks, and 15 vegetable oil-fed, age-paired control animals. In gossypol-treated, reproductively immature guinea pigs, the number of spermatozoa in the epididymis was markedly reduced (P less than 0.01) compared to controls, whereas the presence of spermatids and spermatocytes increased in the epididymis with the duration of gossypol administration. In sexually mature guinea pigs (given 15 mg/kg/day for 5 weeks), the epididymal sperm survival and forward motility were decreased significantly (P less than 0.025 and P less than 0.01, respectively), although the density of mature spermatozoa was the same as in control animals. The percentage of induced acrosome reactions (26.4 +/- 12%) was almost three-fold lower than that of control animals (72.8 +/- 4.6%). Also, in 31.5 +/- 3.8% of spermatozoa from gossypol-treated animals, as compared to only 2.4 +/- 0.7% of controls, the cytoplasmic droplet failed to migrate to its proper position in the midpiece and was retained in the neck region. With a few exceptions, spermatozoa from both experimental and control groups had comparable patterns of freeze-fractured membrane differentiations. Susceptibility to the induced acrosome reactions and the position of the retained cytoplasmic droplet reversed within 3 weeks after the end of gossypol feeding. This study helps establish the suitability of the guinea pig for studies on gossypol-induced infertility.
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PMID:Effect of gossypol acetate on guinea pig epididymal spermatozoa in vivo and their susceptibility to capacitation in vitro. 397 19

Papillary cystadenoma of the epididymis is a rare benign tumor, accounting for only 4 per cent of all epididymal tumors. Histologically, it can be confused with metastatic renal cell carcinoma. We report a case of bilateral involvement of the epididymides and infertility. Its diagnostic significance is its association with the von Hippel-Lindau syndrome, necessitating close surveillance.
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PMID:Bilateral clear cell papillary cystadenoma of the epididymides presenting as infertility: an early manifestation of von Hippel-Lindau's syndrome. 399 14


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