Background: Fluoxetine, a selective serotonin reuptake inhibitor, has been prescribed for the treatment of depression and has shown also efficacy in the treatment of bulimia nervosa and obsessive-compulsive disorder. Grape seed extract is a natural extract from the seeds of graps. It contains the most beneficial groups of plant flavonoids, proanthocyanidins oligomers. These flavonoids are poten...

One of the newer stereological methods, the optical fractionator, was applied to the study of the effects of ageing on the human testis. The estimated total number of Sertoli and Leydig cells per testis in men younger than 30 years were 430×10 (CV = SD/mean = 0.35) and 117×10 (CV = 0.53), respectively, while in men older than 50 years the estimated total Sertoli cell number was 266×10 (CV = 0.4...

BACKGROUND Secreting interstitial cell (Leydig cell) tumors are rare. In adults, the clinical picture and steroid levels are variable. CASE PRESENTATION This paper presents a case of left testicular tumor, showing azoospermia with normal serum level of total testosterone, collapsed FSH and LH, and high delta4 androstenedione. Histopathological investigation revealed a Leydig cell tumor. TESE ...

Recent reports on Leydig cell-specific Tspo conditional knockout TspocΔ/Δ mice (1), viable global Tspo knockout (Tspo−/−) mice from two independent laboratories (2, 3), and clones of CRISPR/Cas9mediated Tspo-deleted MA-10 Leydig cells (MA-10TspoΔ/Δ) (4) established that TSPO is not essential for steroid hormone biosynthesis or viability [reviewed in Ref. (5, 6)]. These reports refuted 25 years ...

OBJECTIVES The present study investigates the outcome of Fowler-Stephens operation in prepubertal Wistar rats focused on microlithiasis and Leydig cell hyperplasia development. METHODS Thirty-eight (38) animals underwent laparoscopic Fowler-Stephens operation on the right testis (8 of them formed the control group) and 6 of them additional contra-lateral orchectomy. The testes were examined h...

Leydig cell tumors of the ovary account for less than 0.1% of all ovarian tumors (1). We present two cases in which patients had markedly elevated serum testosterone levels and frank hirsutism. Both cases revealed right ovarian Leydig cell tumors upon oophorectomy with post-surgical resolution of hypertestosteronemia. While rare and difficult to diagnose, androgen secreting tumors should be sus...

Deletion of the insulin-like growth factor 1 (Igf1) gene was shown in previous studies to result in reduced numbers of Leydig cells in the testes of 35-day-old mice, and in reduced circulating testosterone levels. In the current study, we asked whether deletion of the Igf1 gene affects the number, proliferation, and/or steroidogenic function of some or all of the precursor cell types in the dev...

A number of studies have indicated that testicular macrophages play an important role in regulating steroidogenesis of Leydig cells and maintain homeostasis within the testis. The current paper deals with macrophages (CD68 positive cells) and Leydig cells in patients with nonobstructive azoospermia (NOA). Methods employed included histological analysis on semi- and ultrathin sections, immunohis...

In the present study, we investigated the effects of oral dosing of atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine) to peripubertal male rats (50 and 200 mg/kg body weight daily from postnatal days 23-50) on ex vivo Leydig cell steroidogenesis. Leydig cells from treated rats were characterised by significant decline in mRNA transcripts of several genes responsible for steroidogenes...