Kim, Chang-Seok;Park, Hae-Mo;Shin, Hun-Tae;Lee, Jang-Woo;Kim, Kyung-Tae;Kim, Pan-Gyi;Lee, Sun-Dong;Han, Sang-Baek;Hahn, Yong-Joo
Journal of Society of Preventive Korean Medicine
/
v.10
no.2
/
pp.31-49
/
2006
This study was undertaken to investigate the effects of Gyoaesamultang in pregnant rats and their fetuses. Female Sprague-Dawley rats were orally administered with the Gyoaesamultang at dose of 5mg/kg/day for 20 days. Pregnant rats were sacrificed at 20th day of gestation, and observed internal and reproductive organs. Approximately, live fetuses in the 20th day of gestation were randomly selected and fixed in 95% ethanol. To observe skeletal malformations, fetuses were stained with alcian blue and alizarin red S. Maternal body weight of Gyoaesamultang treated group has a tendency to increase compared to that of control group. There were no significant difference in internal and reproductive organs. There were no significant changes between two groups in blood chemistry and hematological values. There were no significant changes in number of corpus luteum, implantation, live fetuses and implantation rate, delivery rate, late resorption rate and sex ratio. But Gyoaesamultang administered group showed lower early resorption rate than the control group. Neonatal body weight and number of fetus of Gyoaesamultang group were increased to that of control group. The fetuses of dams treated with Gyoaesamultang didn't showed external malformation. Vertebral and sternal variations were observed in Gyoaesamultang group but, compared to the control, those variations were insignificant. The number of ribs, cervical, thoracic, and lumber were normal. The number of sacral and caudal vertebrae were increased. Fetuses treated with Gyoaesamultang showed significant difference in the number of caudal vertebra(P<0.01). From these results, it can be concluded that Gyoaesamultang showed no toxicity effects on maternal body weight, early resorption rate, and number of live fetuses. There were no significant changes in organ weight, hematological data, reproductive organs. Although skeletal variations were showed in vertebrate and sternum, Gyoaesamultang were shown insignificant changes in bone malformation.
This study was investigated to find out the change of reproductive and histological biomarkers of Ruditapes philippinarum exposed to nonylphenol (NP). Experimental period was 16 weeks. Experimental groups were composed of one control condition and three NP exposure conditions (0.05, 0.1, $0.2 mg\;NP\;L^{-1}$). Gonad index was higher in exposure group than control in female and higher in control than exposure group in male. Intersexuality in the NP exposure group was 14.56% with male exhibiting higher ratio than female. Histological analysis of organ system illustrated expansion of hemolymph sinus, loss of striated border of inner epidermis and degeneration of mucous cell in the mantle. In the gill partially disappearance of frontal and lateral cilia, degeneration of mucous cell were observed. Also, hyperplasia of epithelium and disappearance of striated border were observed in the foot. As the concentration of NP increased, the accumulation of lipofuscin increased in the digestive gland. The results of this study suggest that NP induces reduction of survival rate, histopathology and intersex of R. philippinarum. Furthermore, it is indentified that NP functions as an estrogenic effector on the reproduction of R. philippinarum.
Formamide is a colorless fluid with ammonia odor, and irritable when inhaled. It has $LD_{50}$ value of > 5,577 mg/kg in rats for acute oral toxicity and NOAEL of 113 mg/kg/day for target organ (liver) of whole body toxicity. It is also known as reproductive toxicant (1B) and TWA(Time Weighted Average) for it is 10 ppm. Workplace measurements of work places dealing with formamide showed the ppm of all 25 samples was very lower than WEL. However, the exposure concentration can change, depending on workplace condition such as the intensity of work, operating local ventilation system, and wearing protection equipment (Respirators). Therefore, considering it with the risk of whole body toxicity and reproductive toxicity, exposure quantity of each imaginary scenario was calculated at 5.16, 1.72, and $0.43mg/m^3$. The average value was calculated at 0.02-0.58, 0.02-0.66 at 90 percent of cumulative distribution, 0.02-0.69 at 95 percent of cumulative distribution. Therefore, it was generally evaluated to be safe because all values were below 1. However, caution is required to prevent health hazard because it has hepatotoxicity and reproductive toxicity and risk of a high level momentary exposure, depending on the condition of workplace.
Proceedings of the Korea Society of Environmental Toocicology Conference
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2002.10a
/
pp.168-168
/
2002
To establish a test protocol for the rodent 20-day thyroid/pubertal assay, flutamide and diethylstilbestrol (DES) were administered to intact male Sprague-Dawley rats from postnatal day 33 for 20 days. Flutamide (1, 5, and 25 mg/kg/day) or DES (10, 20, and 40 ug/kg/day) was given once daily by oral gavage to immature male rats. Prepuce separation was significantly delayed in flutamide group and in DES group. One day after the last dose, the rats were killed and pituitary, thyroid, and reproductive organs were removed and weighed. Flutamide treatment resulted in a significant reduction in the weights of epididymides, ventral prostate, seminal vesicles plus coagulating glands and fluid (SVCGF), levator ani. bulbocarvenus muscles (LABC), Cowper's glands, and glans penis. The weight of adrenal glands decreased at % mg/kg/day, while testes and any other organ weights were unaffected. No microscopic changes were observed in the thyroid glands. Serum levels of testosterone wert significantly increased in the flutamide-treated groups and serum levels of estradiol were also increased. A significant reduction in the weights of testes, epididymides, ventral prostate, SVCGF, LABC, Cowpers glands, and glans penis of DES treated group. Serum testosterone and LH decreased significantly in DES group. Decrease of estradiol was observed, but not significant. These results indicate that flutamide and DES delay puberty in the male rat and its mode of action appears to be via altered secretion of steroids, which subsequently affect the development of the reproductive tract. (Supported by the grant from NITR/Korea FDA for Endocrine Disrupter Research.)
The purpose of this experiment was to investigate the effects of adrenalectomy and PMSG treatment on reproductive organs and serum steroid hormone level in immature female rats. The animals used in this experiment were 25 days old female rats weighing a, pp.oximately 70g. They were randomly divided into two groups of intact rat group (Int-) and adrenalectomized rat group (Adx-) and each group were subdivided into two groups of Non-PMSG (-Cont) and PMSG treated (-PMSG) group. The rat of PMSG-treated group (-PMSG) was administered subcutaneously with 25 IU PMSG on first day (9 a.m.) after adrenalectomy. The adrenalectomized rat groups were su, pp.ied with saline solution through the experiment period. The rate of ovulation and vaginal opening and reproductive organ weights were observed at 8, 32, 56, 80 and 104 hours after PMSG treatment. At the same time, the serum level of estradiol-17${\beta}$ and progesterone were measured by the radioimmunoassay. The results obtained were as follows: 1. Ovulation was shown at 56 hours after treatment in Int-PMSG group and Adx-PMSG group and Adx-PMSG group. The rate of ovulation was very low in PMSG-treated groups, but it was increased in 80 to 90% at 104 hours after treatment. However, there was no ovulation in Int-Cont group and Adx-Cont group. 2. Vaginal opening was shown at 56 hours after treatment in Int-PMSG group and Adx-PMSG group and a, pp.ared in 80% at 104 hours after treatment. The rate of vaginal opening in PMSG-treated groups was very low, but Int-Cont group and Adx-Cont group had no vaginal opening. 3. The weight of ovary and uterus in two PMSG-treated groups were increased with the elapse of time after treatment and were significantly heavy in all observation time, but changes in Int-Cont group and Adx-Cont group were not recognized. The weights of ovaries and utera in Adx-Cont group were increased with the elapse of time. 4. The level of serum estradiol-17${\beta}$ was remarkably increased in PMSG-treated groups (Int-PMSG and Adx-PMSG groups) compared with Int-Cont and Adx-Cont group, and significant difference was recognized between Non-PMSG group and PMSG-treated group in the experimental period. Especially, the highest levels of Int-PMSG groups and Adx-PMSG groups were shown at 80 and 56 hours after treatment and after ward estradiol-17${\beta}$ levels of PMSG-treated groups were decreased. However, changes of the levels did not a, pp.ared in Non-PMSG groups at 104 hours after treatment. 5. The level of serum progesterone in PMSG-treated groups was significantly increased between 80 and 104 hours after treatment. With the elapse of time, the level was increased in all observed groups except for Int-Cont and Adx-Conx group. And the order from the highest level at 104 hours after treatment was Int-PMSG, Adx-PMSG, Int-Cont and Adx-Cont group.
Kim, Kang Min;Ok, Seon;Go, Youn Suk;Kang, Jae Seon
Journal of Life Science
/
v.25
no.7
/
pp.765-772
/
2015
The aim of this study was to determine the effect of decursin (D) and decursinol angelate (DA) against bisphenol A (BPA) toxicity in a rat two-generation study. Adult rats were divided into the following three groups: (1) control, (2) BPA, and (3) BPA+D/DA. The D and DA treatment of F0 parents increased the terminal body weight and relative adult organ weights (testes, kidneys, spleen, and liver) when compared with the BPA group. A significant decrease in sperm count was found in the BPA+D/DA (7.69%) and BPA (64.70%, p<0.01) groups, when compared with the sperm count in the control group. No offspring were obtained in the F1 generation of the BPA (50 mg/kg/day) group, but the addition of D/DA in the BPA+D/DA group significantly restored fertility (55.78%) and gestation indices (98.87%) in the F1 generation. No significant differences were found in the fertility index between the control (75.02%) and the BPA+D/DA (78.11%) groups in the two-generation study, when compared with the one-generation study. The viability ratio during lactation in the D/DA group was also similar to that of the control group. These data indicate that D/DA (50 mg/kg/day) administered over two generations causes significant positive changes in reproductive or developmental parameters.
This article aims to deconstruct the mechanism of male domination that constantly reproduces the hegemonic class of men. In order to overcome misogyny, we should no longer deny the ontological dimension of the reality of women's oppressions and the pre-eminence of the material condition of women's existence. In addition, the possibility of the category of women as a modality of resistance should be taken into consideration. First, I will highlight the correlation between penis and phallus according to which the phallus refers to the penis which is malleable and fragile and which disappears without being castrated by the external factor. From here we could deduce the fragility and imperfection, the non-absoluteness of the phallic order. Secondly, I will analyze the mechanism of penis-narcissism, which is the modality of the constitution of the individual identity of man. The penis is not only a physiological organ, but a site of self-estimation and the validity of the succession of power and authority of the father's law. With this penis-narcissism, man is constituted as a hegemonic body that can let itself go without worrying about the reactions of others. Thirdly, I will focus on the mechanism of the penis-cartel which is the modality of the formation of the collective identity. The penis-cartel is reinforced by the mutual affirmation of the superiority of men among themselves, but also by the permission and the tacit agreement of their absurdity and lack of rationality and corruption. Because the privilege of men is not monopolized by a small part of the elite, but is consciously and unconsciously shared by all men who are part of the hegemonic and collective category. In order to deconstruct the penis-narcissism and the penis-cartel, it is necessary to demonstrate that the penis is not a self-sufficient body, nor a closed and impermeable body, but that it is a porous body where the organ serves both ejaculation and urinary ejection. The penis is a porous body that is at once the site of sublimity and degradation, purity and impurity. In addition, the penis is no longer an all-powerful and aggressive organ, but it is a malleable and fluid flesh that constantly changes its shape. Linked to a phallus-organ that is the notion of Jacques-Alain Miller, it is a site of deficiency and vulnerability that is not the axis of the penis-cartel. It is through the notion of the double porosity of the penis and the phenomenology of the flesh of the penis, I try to provide the modality of undoing the reproductive mechanism of predatory masculinity. Because this would be an effective strategy to overcome misogyny.
Park, Dong-Heon;Jang, Hyun-Yong;Park, Choon-Keun;Cheong, Hee-Tae;Kim, Choung-Ik;Yang, Boo-Keun
Development and Reproduction
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v.8
no.2
/
pp.91-97
/
2004
The objective of this study was to assess that the effects of DEHP administration on reproductive characteristics and blood hematological and chemical values in pups born after DEHP administration in pregnant mice. DEHP was administrated to pregnant mice by intraperitoneally injection with 0, 0.5, 1.0 and 10.0mg/kg B.W, 5 times at 3 days interval from Day 1 to Day 16 in the gestation period. The body weight and reproductive organ weight(testis, epididymis and coagulating gland) in male pups on 45 day after birth was not affected in all experimental groups, but vesicular gland in DEHP groups was significantly lower than that of control group(P<0.05). The semen characteristics of male pups were not affected in DEHP treatment groups. The WBC, HB, HT, MCH and albumin values in male pups were not affected in all experimental groups, but RBC MCV, MCHC, PLT and total protein values were significantly different among the experimental groups(P<0.05). In female pups, the effects of DEHP administration were not affected the body and uterus weight, but the left ovary in 10.0mg DEHP group was significantly heavier than in control and 0.5mg DEHP group(P<0.05). The WBC, MCV, MCH, MCHC, PLT, albumin, BUN and total protein values in female were not different in all experimental groups. The RBC, HB and HT values were significantly different among the experimental gruop(P<0.05). The historical evaluation of testis in male pups that were grown to 45 days after birth was not different in all experimental groups. The ovary in female pups had many corpus luteum in 10.0mg DEHP group. The endometriosisi of uterus was significantly decreased in DEHP group. There results suggest that low concentration of DEHP administration in pup born after DEHP administration in pregnant mice was not affered on reproductive characteristic, but was affected on blood hematological and chemical values.
The present study was devised to determine the effects of vitamin E and selenium (Selevit) on body weight, organ weight, hematological values and biochemical parameters in the orchidectomized (Orch) rats. Intact group (n=15) received no treatment and operation. Orch+Selevit received operation and Selevit. The body weights of each group increased, but that of the Orch+Selevit group were significantly lower than those of all the other groups. There were significantly different decreased (p<0.001) of body weights between Orch+Selevit group and all the other groups. Also, organ weights such as heart, liver, spleen, kidney, lung and skeletal muscle were measured. The heart and liver weights in the Orch+Selevit group were significantly different decreased (p<0.001) in comparison with those in the Intact and Sham groups. The kidney weights in the Orch+Selevit group were significantly different decreased (p<0.01, p<0.001) in comparison with those in all the other groups. The number of white blood cell (WBC) was significantly higher (p<0.05) in the Orch+Selevit group than in all the other groups. The hematological values of 12 parameters were not significantly different in any of the groups. The concentrations of serum total protein, albumin and alkaline phosphatase only increased significantly (p<0.05, p<0.01) in the Orch+Selevit group as compared to that in the Orch group. We conclude that Selevit was significantly decreased the body weight in the Orch rats. Our findings suggest that Selevit may influence the process of lipid packaging and absorption in the Orch rats.
This study was performed to elucidate the effects of lead poisoning on the reproductive organ of rats. After consecutive oral administrations of lead acetate, the weights of testis, the numbers and motilities of sperms and histological changes of organs were compared between control and experimental groups. 1. Testis weights of 1,000, 2,000 or 4,000 ppm/kg of lead acetate-administrated rats decreased compared with control group in dose-dependent manner. 2. The sperm numbers of 1,000, 2,000 or 4,000 ppm/kg of lead acetate-administrated rats were lowered significantly in dose dependent manners than those of control groups. 3. The sperm motilities of 1,000, 2,000 or 4,000 ppm/kg of lead acetate-administrated rats decreased in dose-dependent manners compared with those of control groups. 4. The weights of livers and kidneys of 1,000, 2,000 or 4,000 ppm/kg of lead acetate-administrated rats decreased or increased. The weights of livers increased and the kidney weights decreased and changes were dose-independent manner. 5. Necrosis of hepatocytes around the central veins, infiltrations of neutrophils, accumulations of bile and infiltrations of fine granules-harboring macrophages in psychymal and interstitial tissues were found out in the livers of copper sulfate-administrated rats. The Bowman's capsule, tubular epithelium and includes in nucleus of kidneys were filled with hyaline materials and hematophilic centers appeared in several lymph nodes.
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