Reproductive toxicity assessment of Senecio scandens extract in kunming mice

2019 ◽  
Author(s):  
Lartey Kwame Ayisi ◽  
Nie Fang-Hong ◽  
Yu Zeng-Jie ◽  
Lin Hong-Ying ◽  
Yang Fan ◽  
...  
Keyword(s):  
Reproductive Toxicity ◽  
Assessment Method ◽  
Toxicity Assessment ◽  
Low Doses ◽  
Female Mice ◽  
Three Phase ◽  
Sperm Abnormality ◽  
High Doses ◽  
Dose Response Effect ◽  
Toxicity Effects

This study assessed the effects of Senecio scandens Buch. Ham.extract on reproductive spectrum in female mice using a three phase reproductive assessment method. Sperm abnormality rate was used to evaluate effect on genetic reproductive toxicity. Senecio scandens extract was relatively non-toxic at low doses in all phases of reproduction in female mice. However, it showed a dose-response effect on sperm abnormality rate, and at high doses has the potential to induce genetic reproductive toxicity in male mice. It is suggested that the well-understood pharmacological benefits of S. scandens extract as an herbal medicine far outweigh the minimal reproductive toxicity effects observed in this study.

Sperm Quality in Mouse After Exposure to Low Doses of TCDD

2019 ◽  
Vol 19 (11) ◽  
pp. 931-943 ◽  
Author(s):  
Heba Yehia Anwar Elsayed ◽  
Esvieta Tenorio Borroto ◽  
Alberto Barbabosa Pliego ◽  
Jorge Acosta Dibarrat ◽  
Fabiola Rivera Ramirez ◽  
...  
Keyword(s):  
Sperm Quality ◽  
Reproductive Toxicity ◽  
Negative Control ◽  
Environmental Pollutant ◽  
The Body ◽  
Control Group ◽  
Low Doses ◽  
Abnormal Head ◽  
Harmful Use ◽  
High Doses

Background: In the last decade, the harmful use of dioxin has been demonstrated in human health and in the whole environment. It is well known among scientists that 2, 3, 7, 8-tetrachloro dibenzo-p-dioxin (TCDD) is an environmental pollutant that causes endocrine disruption, which causes male reproductive toxicity. Objective: The objective of the present study was to evaluate the toxicity effect of low doses of TCDD in male CD1 mice. Materials and Methods: Three concentrations of TCDD (0.375, 0.75, 1.5 mg / kg) were analyzed and the effects on spermatozoa were evaluated 10 days after oral administration of the product. As bioindicators of TCDD toxicity, an exhaustive analysis of several spermatic parameters including motility, vitality, count, morphology and viability, flow cytometry was used to determine the affected sperm population by cytotoxicity and apoptosis. In addition, a morphometric analysis of testicles was performed. Results: The results show that the body weight of the treated animals was reduced in medium and high doses (0.75, 1.5 mg / kg) with respect to the control groups. In the groups treated with TCDD, the abnormal head of the sperm increased by 52.5% more than the control group. Significant differences in apoptosis were observed between the negative control and vehicle control, including the median dose (0.75 mg / kg). Conclusion: It is concluded that at these low doses there was an impact on the quality of the mouse sperm, adding an effect on apoptosis and cytotoxicity of sperm exposed to these doses of TCDD.

ANTAGONISTIC ACTION OF NORETHYNODREL ON THE TESTOSTERONE-DEPENDENT PROCESS OF FRUCTOSE FORMATION IN MOUSE SEX ACCESSORY ORGANS

1966 ◽  
Vol 51 (2) ◽  
pp. 224-230 ◽  
Author(s):  
John A. Thomas ◽  
Edward T. Knych
Keyword(s):  
Antagonistic Activity ◽  
Low Doses ◽  
Antagonistic Action ◽  
Dependent Process ◽  
High Doses

ABSTRACT Norethynodrel antagonized the fructose stimulating effects of exogenous testosterone in sex accessory organs of castrate mice. It was antiandrogenic at both low doses (50 μg) and high doses (400 μg) of testosterone. Norethindrone and ethisterone suppressed fructose formation in the testosterone-treated castrate mouse, but not as effectively as norethynodrel. Norethandrolone exerted no antagonistic activity.

scholarly journals Antifertility Actions of a-Chlorohydrin in the Male

1983 ◽  
Vol 36 (4) ◽  
pp. 333 ◽  
Author(s):  
A RJones
Keyword(s):  
Male Fertility ◽  
Human Sperm ◽  
Male Rat ◽  
Low Doses ◽  
Dose Regime ◽  
Male Contraceptive ◽  
The Past ◽  
High Doses ◽  
Species Specific ◽  
Daily Oral Administration

Non-steroidal chemicals that affect male fertility have been known for over 25 years but only one compound, oc-chlorohydrin, possesses most of the attributes of an ideal male contraceptive. In the male rat, for example, continuous daily oral administration of low doses produces an almost immediate and continuous antifertility response that ceases when treatment is withdrawn. Such a dose regime does not interfere with libido, is apparently not toxic and the action is specific towards mature sperm. Furthermore, the action of the compound is species-specific: it is effective in the rat, ram, boar, guinea pig, hamster,rhesus monkey and upon ejaculated human sperm but it is ineffective in the mouse and the rabbit. High doses of oc-chlorohydrin can be neurotoxic, nephrotoxic and, in rats, lead to prolonged or permanent infertility. However, the antifertility response and the toxicity of racemic oc-chlorohydrin may be due, respectively, to the separate enantiomers. No other antifertility chemical has been investigated to such an extent as oc-chlorohydrin; this article reviews the progress that has been achieved with oc-chlorohydrin during the past six years.

Effect of oral administration of carbofuran on male reproductive system of rat

1995 ◽  
Vol 14 (11) ◽  
pp. 889-894 ◽  
Author(s):  
N. Pant ◽  
AK Prasad ◽  
SC Srivastava ◽  
R. Shankar ◽  
SP Srivastava
Keyword(s):  
Body Weight ◽  
Sperm Count ◽  
Reproductive Toxicity ◽  
Giant Cells ◽  
Toxicity Assessment ◽  
Male Rats ◽  
Ventral Prostate ◽  
Seminiferous Tubules ◽  
Effect Level ◽  
Dose Dependent Decrease

1 Carbofuran was administered orally to adult male rats at dose levels of 0.1, 0.2, 0.4 or 0.8 mg kg -1 body weight, 5 d wk-1 for 60 days. A dose dependent decrease was observed in body weight of rats treated with 0.2-0.8 mg carbofuran kg -1 body weight 2 A significant decrease in the weight of epididymides, seminal vesicles, ventral prostate and coagulating glands was observed at various test doses of carbofuran except at the lowest dose. 3 Decreased sperm motility, reduced epididymal sperm count along with increased morphological abnormali ties in head, neck and tail regions of spermatozoa were observed in rats exposed to 0.2, 0.4, or 0.8 mg carbo furan kg-1 body weight. 4 In addition, significant alterations were observed in the activities of marker testicular enzymes viz. sorbitol dehydrogenase (SDH), glucose-6-P-dehydrogenase (G6PDH) (decreased), lactate dehydrogenase (LDH) and γ-glutamyl transpeptidase (γ-GT) (increased) depending on dose. 5 Histologically, the results indicated the toxicity of carbo furan on testes depending on dose. The changes pre dominantly consisted of moderate oedema, congestion, damage to Sertoli cells and germ cells, along with the accumulation of cellular debris and presence of giant cells in the lumen of a few seminiferous tubules which showed disturbed spermatogenesis with the higher doses of carbofuran. 6 These observations determined a no effect level dose of 0.1 mg kg-1 body weight of carbofuran on the biochemi cal and morphological indices studied for male repro ductive toxicity assessment in the rat model. The results of the present study provide first hand information on the reproductive toxicity of carbofuran in male rats.

Effects of a low-doses treatment with cuprum on neostigmine digestive action in female mice

1991 ◽  
Vol 24 (3) ◽  
pp. 231-233 ◽  
Author(s):  
R. Santini ◽  
M. Tessier ◽  
P. Belon
Keyword(s):  
Low Doses ◽  
Female Mice

Gastrointestinal motor effects of erythromycin

1990 ◽  
Vol 259 (3) ◽  
pp. G355-G363 ◽  
Author(s):  
M. F. Otterson ◽  
S. K. Sarna
Keyword(s):  
Small Intestine ◽  
Cycle Length ◽  
Amplitude Ratio ◽  
Contractile Activity ◽  
Low Doses ◽  
Control Activity ◽  
Distal Small Intestine ◽  
Gastrointestinal Motor ◽  
High Doses ◽  
Motor Effects

We studied the small intestinal motor effects of oral and intravenous (iv) erythromycin in 10 conscious dogs. After control recordings with placebo, oral or iv erythromycin was given at 40% of the migrating motor complex (MMC) cycle. Recordings were made after administration until normal contractile activity had returned or 12 h postdrug administration. Low doses initiated a premature MMC. High doses, however, prolonged the MMC cycle length. Erythromycin reduced the MMC propagation velocity at all doses. Both oral and iv erythromycin induced amyogenesia. During this pattern, electrical control activity was obliterated in the proximal and destabilized in the distal small intestine. Erythromycin also increased the incidence of retrograde giant contractions (RGCs) and vomiting. These effects occurred within the first 2 h after oral and within the first 30 min after iv administration. The incidence of giant migrating contractions (GMCs) increased significantly from 5 to 12 h but not from 0 to 5 h after administration. The distance of origination of GMCs from the ileocolonic junction was significantly increased from 5 to 12 h. The amplitude ratio, duration, and velocity of migration of GMCs induced after erythromycin were similar to control values. Clusters of coordinated antral and duodenal contractions also occurred early after administration. Our findings suggest that erythromycin has multiple motor effects on the stomach and small intestine. Diarrhea, abdominal cramping, and vomiting associated with erythromycin may be related to increased incidence of GMCs and RGCs. Erythromycin has a biphasic effect on MMC cycle length, initiating premature MMCs at low doses and prolonging their cycle length at higher doses.(ABSTRACT TRUNCATED AT 250 WORDS)

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