Kim, So Mi;Lee, Hyun Sook;Jung, Jae In;Lim, Su-Min;Lim, Ji Hoon;Ha, Wang-Hyun;Jeon, Chang Lae;Lee, Jae-Yong;Kim, Eun Ji
Nutrition Research and Practice
/
v.12
no.4
/
pp.275-282
/
2018
BACKGROUND/OBJECTIVE: There is intense interest in soy isoflavone as a hormone replacement therapy for the prevention of postmenopausal osteoporosis. A new kind of isoflavone-enriched whole soy milk powder (I-WSM) containing more isoflavones than conventional whole soy milk powder was recently developed. The aim of this study was to investigate the effects of I-WSM on bone metabolism in ovariectomized mice. MATERIALS/METHODS: Sixty female ICR mice individually underwent ovariectomy (OVX) or a sham operation, and were randomized into six groups of 10 animals each as follows: Sham, OVX, OVX with 2% I-WSM diet, OVX with 10% I-WSM diet, OVX with 20% I-WSM diet, and OVX with 20% WSM diet. After an 8-week treatment period, bone mineral density (BMD), calcium, alkaline phosphatase (ALP), tartrate-resistant acid phosphatase (TRAP) 5b, osteocalcin (OC), procollagen 1 N-terminal propeptide (P1NP), and osteoprotegenin (OPG) were analyzed. RESULTS: BMD was significantly lower in the OVX group compared to the Sham group but was significantly higher in OVX + 10% I-WSM and OVX + 20% I-WSM groups compared to the OVX group (P < 0.05). Serum calcium concentration significantly increased in the OVX + 10% and 20% I-WSM groups. Serum ALP levels were significantly lower in the OVX + 10% and 20% I-WSM groups compared to the other experimental groups (P < 0.05). OC was significantly reduced in the OVX group compared to the Sham group (P < 0.05), but a dose-dependent increase was observed in the OVX groups supplemented with I-WSM. P1NP and OPG levels were significantly reduced, while TRAP 5b level was significantly elevated in the OVX group compared with the Sham group, which was not affected by I-WSM (P < 0.05). CONCLUSIONS: This study suggests that I-WSM supplementation in OVX mice has the effect of preventing BMD reduction and promoting bone formation. Therefore, I-WSM can be used as an effective alternative to postmenopausal osteoporosis prevention.
Ovarian development of the vitrified neonatal ovaries after orthotopical transplantation into the ovariectomized adult recipient mouse were observed. Ovaries were collected from the neonatal females on day of birth and grouped for fresh, vitrification for 1-minute, and 3-minute. Vitrified and thawed neonatal ovaries were orthotopically transplanted into ovarian bursa of the adult mice from which endogenous ovaries have removed just prior to the transplantation (1 minute: n=25; 3 minutes n=23). Fresh ovarian tissue transplanted (n=25) mice were included as control groups. Returning of the estrus cycles and the survival and development of the transplanted ovaries were evaluated. Intact ovaries from neonatal, and four weeks old mice were used for comparison of the ovarian development as in vivo-developed control. From 2 weeks after transplantation, 64%, 36%, and 75% of the transplanted mice showed return of the estrus cycles in fresh, 1-minute, and 3-minute groups, respectively. Four weeks after transplantation, all mice were sacrificed and ovarian tissues were recovered for histological analysis. 57.1%, 33.3%, and 64.7% mice in fresh, 1-minute, and 3-minute groups, respectively, had survived ovaries with follicles at various stages of growth from primordial to preovulatory follicles. Corpus lutea were also observed. Results of the present study suggest that 1) normal folliculogenesis has initiated in vivo after vitrification, and 2) the vitrification may be used as a preservation method for ovarian tissues for establishment of ovarian tissue bank.
ARID1A and PGR plays an important role in embryo implantation and decidualization during early pregnancy. Uterine specific Arid1a knockout ($Pgr^{cre/+}Arid1a^{f/f}$) mice exhibit in non-receptive endometrium at day 3.5 of gestation (GD 3.5). In previous studies, using transcriptomic analysis in the uterus of $Pgr^{cre/+}Arid1a^{f/f}$ mice, we identified proline-rich acidic protein 1 (PRAP1) as one of the down-regulated genes by ARID1A in the uterus. In the present study, we performed RT-qPCR and immunohistochemistry analysis to investigate the regulation of PRAP1 by ARID1A and determine expression patterns of PRAP1 in the uterus during early pregnancy. During early pregnancy, PRAP1 expression was strong at day 0.5 of gestation (GD 0.5) and then decreased at GD 3.5 in the epithelium and stroma. After implantation, PRAP1 expression was remarkably reduced in the uterus. However, the expression of PRAP1 at GD 3.5 was remarkably increased in the $Pgr^{cre/+}Arid1a^{f/f}$ mice. To determine the ovarian steroid hormone regulation of PRAP1, we examined the expression of PRAP1 in ovariectomized control, $Pgr^{cre/+}Arid1a^{f/f}$, and progesterone receptor knock-out (PRKO) mice treated with progesterone. While PRAP1 proteins were strongly expressed in the luminal and glandular epithelium of control mice treated with vehicle, progesterone treatment suppressed the expression of PRAP1. However, PRAP1 was not suppressed in both the $Pgr^{cre/+}Arid1a^{f/f}$ and PRKO mice compared to controls. Our results identified PRAP1 as a novel target of ARID1A and PGR in the murine uterus.
Kayoung Ko;Seohee Choi;Miri Jo;Chaeyoung Kim;Napissara Boonpraman;Jihyun Youm;Sun Shin Yi
Journal of Veterinary Science
/
v.25
no.4
/
pp.49.1-49.15
/
2024
Importance: Endochondral ossification plays an important role in skeletal development. Recent studies have suggested a link between increased intracellular reactive oxygen species (ROS) and skeletal disorders. Moreover, previous studies have revealed that increasing the levels of myeloperoxidase (MPO) and osteopontin (OPN) while inhibiting NADPH oxidase 4 (NOX4) can enhance bone growth. This investigation provides further evidence by showing a direct link between NOX4 and MPO, OPN in bone function. Objective: This study investigates NOX4, an enzyme producing hydrogen peroxide, in endochondral ossification and bone remodeling. NOX4's role in osteoblast formation and osteogenic signaling pathways is explored. Methods: Using NOX4-deficient (NOX4-/-) and ovariectomized (OVX) mice, we identify NOX4's potential mediators in bone maturation. Results: NOX4-/- mice displayed significant differences in bone mass and structure. Compared to the normal Control and OVX groups. Hematoxylin and eosin staining showed NOX4-/- mice had the highest trabecular bone volume, while OVX had the lowest. Proteomic analysis revealed significantly elevated MPO and OPN levels in bone marrow-derived cells in NOX4-/- mice. Immunohistochemistry confirmed increased MPO, OPN, and collagen II (COLII) near the epiphyseal plate. Collagen and chondrogenesis analysis supported enhanced bone development in NOX4-/- mice. Conclusions and Relevance: Our results emphasize NOX4's significance in bone morphology, mesenchymal stem cell proteomics, immunohistochemistry, collagen levels, and chondrogenesis. NOX4 deficiency enhances bone development and endochondral ossification, potentially through increased MPO, OPN, and COLII expression. These findings suggest therapeutic implications for skeletal disorders.
Lee Young Min;Jung Myeong Ho;Lee Yeon Sook;Song Jihyun
Journal of Nutrition and Health
/
v.37
no.9
/
pp.786-793
/
2004
Women with menopause or rats with ovariectomy is associated with increased body weight, body fat and insulin resistance, which are components of metabolic syndrome. Increased prevalence of metabolic syndrome after menopause might be associated with mitochondrial dysfunction, since mitochondrial oxidative and phosphorylation activity is strongly correlated with insulin sensitivity. Although estradiol replacement prevents the metabolic syndrome, harmful effect of estradiol hampers the casual usage to prevent the metabolic syndrome. It has been reported that genistein has a mild estrogenic activity, decreases fat mass in mice and has an antidiabetic role in diabetic rats. Although insulin resistance is closely related to mitochondrial functions, there has not been yet any study in regard to the effect of dietary genistein on mitochondrial function in the insulin resistant female subjects induced by ovariectomy or similar situation. The present study investigated whether the supplementation of genistein in the high fat diet affected the mitochondrial function of high fat fed ovariectomized rats. Female Sprague Dawley rats (8 weeks old) were assigned to the following groups: sham-operated+ high fat diet (S, n=6); sham-operated + high fat diet with 0.1% genistein (S + G, n=7); ovariectomized + high fat diet (OVX, n=8); ovariectomized + high fat diet with 0.1% genistein (OVX+ G, n=8). Ovariectomy significantly increased body weight compared with S group. Genistein consumption in ovariectomized (OVX + G) rats decreased body weight gain compared with OVX rats. Liver weights were increased by ovariectomy. The hepatic mitochondrial protein density expressed as mg per g liver was lower in the OVX group than in the S group. However, OVX + G group showed the increased mitochondrial protein density similar to the level of S group. When mRNA levels of genes related to mitochondria such as peroxisome proliferator-activated receptor ${\gamma}$ coactivator 1 (PGC-1) and cytochrome c oxidase subunit III (COX III) were measured, there were decreases in the mRNA levels of PGC-1 and COX III in S + G, OVX and OVX + G group. The activity of cytochrome c oxidase was not different between groups. We could observe the decrease in succinate dehydrogenase (SDH) activity per g liver in OVX rats. Genistein supplement increased SDH activity. In conclusion, genistein supplementation to the OVX rats enhanced mitochondrial function by increasing mitochondrial protein density and SDH activity. The improvement in mitochondrial function by genistein can contribute to the improvement in metabolic syndrome.
Kim, Jin;Lee, Yoon Hee;Yoon Park, Jung Han;Sung, Mi-Kyung
Nutrition Research and Practice
/
v.9
no.6
/
pp.628-636
/
2015
BACKGROUND/OBJECTIVES: Obesity is a risk factor of breast cancer in postmenopausal women. Estrogen deprivation has been suggested to cause alteration of lipid metabolism thereby creating a cellular microenvironment favoring tumor growth. The aim of this study is to investigate the effects of estrogen depletion in combination with excess energy supply on breast tumor development. MATERIALS/METHODS: Ovariectomized (OVX) or sham-operated C3H/HeN mice at 4 wks were provided with either a normal diet or a high-fat diet (HD) for 16 weeks. Breast tumors were induced by administration of 7,12-dimethylbenz(a)anthracene once a week for six consecutive weeks. RESULTS: Study results showed higher serum concentrations of free fatty acids and insulin in the OVX+HD group compared to other groups. The average tumor volume was significantly larger in OVX+HD animals than in other groups. Expressions of mammary tumor insulin receptor and mammalian target of rapamycin proteins as well as the ratio of pAKT/AKT were significantly increased, while pAMPK/AMPK was decreased in OVX+HD animals compared to the sham-operated groups. Higher relative expression of liver fatty acid synthase mRNA was observed in OVX+HD mice compared with other groups. CONCLUSIONS: These results suggest that excess energy supply affects the accelerated mammary tumor growth in estrogen deprived mice.
Kim, Jin-Hee;Lee, Kyoung-Ran;Kim, Hyeon-Kyeong;No, So-Hyeon;Yoo, Hye-Min;Moon, Chan-Il;Yang, Hyun-Won
Development and Reproduction
/
v.15
no.4
/
pp.349-357
/
2011
Since nesfatin-1/NUCB2 involved in the control of appetite and energy metabolism was discovered for the first time in hypothalamus, many reports have shown its expression in various tissues. We also recently demonstrated that nesfatin-1/NUCB2 was expressed in the reproductive organs of mouse. However, no data exist on nesfatin-1/NUCB2 expression, regulation, and secretion in the uterus. Therefore, we examined the expression of nesfatin-1/NUCB2 in mouse uterus and the effects of PMSG and estrogen on its expression. NUCB2 mRNA expression in the uterus was determined by conventional and real-time PCR and nesfatin-1 protein expression was detected by western blotting. In immunohistochemistry staining, nesfatin-1 protein was localized at the epithelial cells of the uterine glands and endometrium. Nesfatin-1 protein binding sites were displayed at the epithelial cells of uterine glands and specific granulocytes including neutrophils. Additionally, to examine if the nesfatin-1/NUCB2 expression in the uterus is regulated by gonadotropin or estrogen, ovariectomized mice were treated with PMSG or $17{\beta}$-estradiol. The expression levels of NUCB2 mRNA in the uterus was significantly increased in the control mice after PMSG treatment, but not in the ovariectomized mice. In contrast, NUCB2 mRNA expression was dramatically increased in the ovariectomized mice after treatment with $17{\beta}$-estradiol. We report here for the first time that nesfatin-1/NUCB2 mRNA and protein express in the mouse uterus and its expression is regulated by estrogen secreted from the ovary, but not gonadotropin from the pituitary.
CREBZF (cAMP-response element binding protein zhangfei) is a member of ATF/CREB family, and which regulates various cellular functions by suppressing major factors with direct interaction. In this study, we have examined the expression of CREBZF on mouse endometrium during uterus estrous cycles and estrogen (E2) treatment. In uterus, CREBZF mRNA expression was higher than other organs and mRNA and protein of CREBZF was increased in proestrus phase and decreased in estrus phase. The expression of CREBZF in 3-weeks old mouse uterus was reduced by E2 injection in endometrium. In addition, the expression of progesterone receptor, a marker of E2 in ovariectomized mice was found to be strongly expressed in stroma, while CREBZF was only expressed in epithelium. Also, we conformed that E2-suppressed CREBZF was restored by co-injection of ICI 182,780, an estrogen receptor antagonist. Overall, these results suggest that CREBZF is regulated by estrogen and involved in ER signaling pathway in mouse uterus.
Purpose : This study is to examine what are the effects of the Woogwiyeum(WGY) on the ovariectomized rat model of postmenopausal osteoporosis. Methods : We devide mice to 3 Group(Sham operated group, control group, WGY treated group) and analyze each serum component. Results : 1. Body weight in control group showed significant increase in comparison with sham, but that in WGY-treated showed no change in comparison with control. 2. The level of serum albumin, ALP in control group showed significant decrease in comparison with sham. That in WGY-treated was decreased in comparison with control. 3. Trabecular bone area as well as trabecular thickness in control group showed significant decrease in comparison with sham. Those in WGY-treated showed significant increase in comparison with control. 4. Osteoclast number and oseoblast surface in control group showed significant increase in comparison with sham. Those in WGY-treated showed significant decrease in comparison with control. Conclusion : WGY has shown to be capable of preventing and curing osteoporosis caused by old-aged and postmenopause.
Namkyu Lee;Ju Hyeong Lee;Ji Eun Won;Youn Ji Lee;Sun Hee Hyun;Yeong-Deuk Yi ;Gyo In;Hee Dong Han;YoungJoo Lee
Journal of Ginseng Research
/
v.47
no.3
/
pp.385-389
/
2023
Background: Ginseng has been used as a traditional medicine for treatment of many diseases and for general health maintenance. Previously, we showed that ginseng did not demonstrate estrogenic property in ovariectomized mouse model. However, it is still possible that disruption of steroidogenesis leading to indirect hormonal activity. Methods: The hormonal activities were examined in compliance with OECD guidelines for detecting endocrine disrupting chemicals: test guideline (TG) No. 456 (an in vitro assay method for detecting steroidogenesis property) and TG No. 440 (an in vivo short-term screening method for chemicals with uterotrophic property). Results: Korean Red Ginseng (KRG) and ginsenosides Rb1, Rg1, and Rg3 did not interfere with estrogen and testosterone hormone synthesis as examined in H295 cells according to TG 456. KRG treatment to ovariectomized mice did not show a significant change in uterine weight. In addition, serum estrogen and testosterone levels were not change by KRG intake. Conclusion: These results clearly demonstrate that there is no steroidogenic activity associated with KRG and no disruption of the hypothalamic-pituitary-gonadal axis by KRG. Additional tests will be performed in pursuit of cellular molecular targets of ginseng to manifest mode of action.
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