Etude de la spermatogenèse chez le rat Wistar prépubère au cours d'une malnutrition protéino-énergétique suivie d'une réalimentation équilibrée

Lac, G.; Lac-Scanzi, Nadine; Benmoussat, Touria

doi:10.1051/rnd:19840414

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…Increases in testicular and epididymal (head/body) weights were significantly less in food-restricted males when compared to those in ad libitum-fed bats. Generally, undernutrition will delay sexual development in immature male mammals, decrease circulating testosterone concentrations and to a lesser extent inhibit spermatogenesis (e.g., Dickerson, Gresham & McCance 1964;Mann, Rowson, Short & Skinner, 1967;Leathern, 1970Leathern, , 1975Slob, Vreeburg & Van Der WerfTTen Bosch, 1979;Lac & Lac-Scanzi, 1984;Ryg, 1984). Although testicular weights in the present study were significantly lower in the food-restricted males, spermatogenesis was initiated in all animals.…”

Section: Discussioncontrasting

confidence: 48%

Relationship of food intake to the induction of plasma sex steroid-binding protein and testicular activity in immature male little brown bats (Myotis lucifugus lucifugus)

Damassa¹,

Gustafson²

1985

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Immature male little brown bats were aroused prematurely from their first hibernation and fed ad libitum (Group AL) or given a restricted diet (Group FR). All animals were weighed daily and the food intake of Group FR males was restricted to maintain their body weights at or near initial post-arousal values (5.3-6.8 g). The average body weights of Group AL males increased during the first week after arousal and then stabilized at a level which was 20% higher than those of Group FR males. The post-arousal induction of plasma SBP was similar in Groups FR and AL: plasma SBP activity was significantly increased 1 week after arousal and by 3 weeks had reached levels which were more than 10-fold higher than those of immature hibernating males which served as controls. Although food restriction had no effect on plasma SBP levels, it did inhibit reproductive development. Arousal-induced increases in testicular and epididymal (head/body) weights in Group FR males were less than 50% of those in Group AL males. However, histological examination of the testes revealed similar degrees of spermatogenic activation in both groups. Plasma testosterone concentrations were increased markedly in Groups FR and AL; values were generally lower in Group FR but wide individual variations were observed. Despite these elevated peripheral testosterone values, the accessory sex glands in both groups remained unstimulated.

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Section: Discussioncontrasting

confidence: 48%

Relationship of food intake to the induction of plasma sex steroid-binding protein and testicular activity in immature male little brown bats (Myotis lucifugus lucifugus)

Damassa¹,

Gustafson²

1985

Reproduction

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Impact of the nutritional quality of barley on growth rate, biometric and biochemical parameters and plasma concentration of androgens during puberty in the Ouled-Djellal lambs

Kahal

Taïbi

Boukenaoui

et al. 2022

Research in Veterinary Science

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<b>Protein restriction during intrauterine and lactation periods: effects on testicular development in pre-puberty rats

Oliveira

Silva

Magalhães

et al. 2015

Acta Sci. Biol. Sci.

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ABSTRACT. Current study investigates the effects of maternal protein restriction during pregnancy and lactation on the testis of immature rats. Female Wistar rats were mated and, after confirming pregnancy, they were divided into two groups: undernourished group (UG) fed on a diet with casein 8%, and control group (CG) fed on a diet with casein 17 %, during pregnancy and lactation. After weaning, male offspring from the two experimental groups were fed on normal diet up to 35 days old when they were euthanized. Body and testicular weights decreased in UG when compared to those in CG. Volumetric density of seminiferous tubules was higher in CG whilst intertubular space increased in UG. The number of lumenated seminiferous tubules was higher in CG than in UG. Tubular diameter, seminiferous epithelium height and total length of seminiferous tubules were lower in UG. Round spermatids were frequently found in seminiferous tubules cross-section of CG. On the other hand, spermatocytes I in prophases was the germ cell commonly found in seminiferous tubules cross-sections of UG. Undernutrition during pregnancy and lactation period of the male Wistar rats altered the morphometric testicular parameters related to tubular compartment and delayed the onset of spermatogenesis. Keywords: testes, seminiferous tubules, morphometry, undernutritionRestrição proteica durante os períodos intrauterino e lactacional: efeitos no desenvolvimento testicular de ratos pré-púberes RESUMO. O objetivo deste estudo foi investigar o efeito da restrição proteica materna durante prenhez e lactação no testículo de ratos imaturos. Fêmeas de ratos Wistar foram acasaladas e, uma vez confirmada a gestação, foram divididas em dois grupos e alimentadas durante a prenhez e a lactação: grupo desnutrido (GD), dieta com caseína 8%, e grupo controle (GC), dieta com caseína 17%. Após o desmame, os machos de ambas as proles receberam a dieta normal até os 35 dias de idade, quando ocorreu a eutanásia. O peso corporal e o peso testicular diminuíram no GD com relação ao GC. A densidade volumétrica dos túbulos seminíferos foi maior no GC, assim como o espaço intertubular aumentou no GD. O número de túbulos seminíferos luminados foi maior no GC comparado ao GD. Diâmetro tubular, altura do epitélio seminífero e comprimento total dos túbulos seminíferos diminuíram no GD. Espermátides arredondadas foram frequentemente encontradas nas seções transversais do GC. Por outro lado, espermatócitos I em prófase foram o tipo celular mais frequentemente encontrado no GD. A desnutrição durante a gestação e a lactação em ratos Wistar machos alteraram parâmetros morfométricos testiculares relacionados ao compartimento tubular e atrasou o início da espermatogênese.

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Etude de la spermatogenèse chez le rat Wistar prépubère au cours d'une malnutrition protéino-énergétique suivie d'une réalimentation équilibrée

Cited by 3 publications

References 6 publications

Relationship of food intake to the induction of plasma sex steroid-binding protein and testicular activity in immature male little brown bats (Myotis lucifugus lucifugus)

Relationship of food intake to the induction of plasma sex steroid-binding protein and testicular activity in immature male little brown bats (Myotis lucifugus lucifugus)

Impact of the nutritional quality of barley on growth rate, biometric and biochemical parameters and plasma concentration of androgens during puberty in the Ouled-Djellal lambs

<b>Protein restriction during intrauterine and lactation periods: effects on testicular development in pre-puberty rats

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