Abstract
Administration of sodium fluoride (NaF, 10 mg/kg bw) together with aluminium chloride (AlCl3, 200 mg/kg bw) to adult male mice for 30 days resulted in structural alterations in the testis with formation of giant cells. These changes along with lower protein levels affected spermatogenesis. Steroidogenesis was also altered since the activities of 3?- and 17?-hydroxysteroid dehydrogenases were inhibited with accumulation of cholesterol. Although withdrawal of treatment for 30 days resulted in some recovery, administration of vitamin C along with the toxicants produced significant recovery.
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Fluoride toxicity in the testis and cauda epididymis of guinea pig and reversal by ascorbate
Effects of sodium fluoride (NaF) (30 mg kg-1 body weight) and ascorbic acid ingestion along with sodium fluoride for 30 days each were studied to evaluate its possible role as an ameliorative agent on functions of reproductive organs and spermatozoa of the fluorotic guinea pig. The cauda epididymal spermatozoa were
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[The primary study of antagonism of selenium on fluoride-induced reproductive toxicity of male rat].
The protective effect of ascorbic acid at dose level of 1.0 mg/L in drinking water against the fluoride-induced damage on reproductive system of rat was studied. 150 mg/L sodium fluoride (NaF) in drinking water of male rat can cause the significant decrease of sperm count and mobility, the increase of
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Effects of fluoride ingestion on the physiology of reproductive organs of male rat
Oral administration of sodium fluoride (NaF) (5 and 10 mg/kg body weight/day) for 30 days to adult male rats, brought about a reduction in body weight especially by high dose (10 mg/kg body weight). In fluorotic rats, testicular cholesterol and serum testosterone levels were not affected. However, succinate dehydrogenase activity
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Vitamin C and E supplementation can ameliorate NaF mediated testicular and spermatozoal DNA damages in adult Wistar rats.
Objective: Present study was designed to explore the efficacy of vitamin C and E (VC&VE) against fluoride mediated testicular, epididymal and spermatozoal anomalies. Materials and methods: Thirty two adult Wistar rats were divided into four groups. Group-I was control; Group-II received sodium fluoride (NaF) at 15 mg/kg/day
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Fluoride and aluminum induced toxicity in mice epididymis and its mitigation by vitamin C
Treatment of adult male mice with sodium fluoride (NaF, 10 mg/kg bw/day) and aluminium chloride (AlCl3, 200 mg/kg bw/day) simultaneously for 30 days caused marked histological changes in the epididymis accompanied by decreased levels of protein and sialic acid and also lowered activities of adenosine triphosphatase (ATPase) and succinate dehydrogenase
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Fluoride's Effect on Male Reproductive System - Human Studies
Consistent with in vitro and animal research, studies of human populations have reported associations between fluoride exposure and damage to the male reproductive system. Most notably, a scientist at the Food & Drug Administration reported in 1994 that populations in the United States with more than 3 ppm fluoride in their water had lower "total fertility rates" than populations with lower fluoride levels.
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Fluoride's Effect on Male Reproductive System: Animal Studies
Over 60 studies on animals (including rats, mice, roosters, and rabbits) have found that fluoride adversely impacts the male reproductive system. These studies have repeatedly found the following effects: (1) decreases in testosterone levels; (2) reduced sperm motility; (3) altered sperm morphology; (4) reduced sperm quantity; (5) increased oxidative stress; (6) and reduced capacity to breed.
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Fluoride's Effect on Male Reproductive System -- The "Sprando/Collins" Anomaly
In contrast to the findings of over 60 animal studies from other research teams, a series of studies by FDA researchers Sprando & Collins reported virtually no evidence of reproductive toxicity among animals treated with very high levels of fluoride exposure. The reasons for this discrepancy remains unclear. Excerpts from Sprando/Collins' Studies: "This study
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Fluoride's Effect on the Male Reproductive System -- In Vitro Studies
Carefully controlled in vitro studies have found that direct exposure of fluoride to the testes or semen inhibits testosterone production and damages sperm. While researchers have known since the 1930s that mega concentrations of fluoride can completely (but reversibly) immobilize sperm, it was not until the 1970s and 1980s that researchers found that relatively modest concentrations of fluoride could cause damage prior to complete immobilization.
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