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        Vitamin D Proliferates Vaginal Epithelium through RhoA Expression in Postmenopausal Atrophic Vagina tissue

        이아름,이만렬,이해혁,김연숙,김준모,Temuulee Enkhbold,김태희 한국분자세포생물학회 2017 Molecules and cells Vol.40 No.9

        Postmenopausal atrophic vagina (PAV) is the thinning of the walls of the vagina and decreased lugae of the vagina. PAV is caused by decreased estrogen levels in postmenopausal women. However, the harmful effects of hormone replacement therapy (HRT) have resulted in considerable caution in its use. Various estrogen agonist treatment options are available. Vitamin D is influences the regulation of differentiation and proliferation of various cells, especially tissues lining stratified squamous epithelium, such as the vaginal epithelium. In this study, we hypothesized that vitamin D could provide an alternative and a safe treatment option for PAV by promoting the proliferation and differentiation of the vaginal epithelium. Thirty six patients were enrolled in this case-control study. Vitamin D associated proteins in a vitamin D and sex hormone treated vaginal epithelial cell line as well as normal and PAV tissues were measured. To confirm of cell-to-cell junction protein expression, cell line and tissue studies included RT-PCR, immunohistochemistry staining, and immunoblot analyses. The expression of cell-to-cell junction proteins was higher in women with symptoms of atrophic vagina tissue compared to women without the symptoms. Vitamin D stimulated the proliferation of the vaginal epithelium by activating p-RhoA and Erzin through the vitamin D receptor (VDR). The results suggest that vitamin D positively regulates cell-to-cell junction by increasing the VDR/p-RhoA/p-Ezrin pathway. This is the first study to verify the relationship of the expression of RhoA and Ezrin proteins in vaginal tissue of PAV.

      • KCI등재

        Therapeutic Approaches to Atrophic Vaginitis in Postmenopausal Women: A Systematic Review with a Network Meta-analysis of Randomized Controlled Trials

        ( Arum Lee ),( Tae-hee Kim ),( Hae-hyeog Lee ),( Yeon-suk Kim ),( Temuulee Enkhbold ),( Bora Lee ),( Yoo Jin Park ),( Kisung Song ) 대한폐경학회 2018 대한폐경학회지 Vol.24 No.1

        Objectives: Atrophic vaginitis (AV), which is common in postmenopausal women, is characterized by vaginal dryness, dyspareunia, and discomfort. There are a variety of therapeutic agents for the treatment of AV, besides hormone replacement therapy. We performed this systematic review to compare the effectiveness of various therapies for symptom improvement in AV patients. Methods: We searched the Cochrane Library, EMBASE, MEDLINE, and other literature (Google Scholar, Web of Science, and hand search) for studies published between January 2010 and March 2015. AV was evaluated by the following outcomes: vaginal pH, dyspareunia, vaginal dryness, or cytological change (endometrial thickness, percentages of superficial cells and parabasal cells). They measured treatment efficacy with various outcomes pertaining to AV symptoms. Results: Meta-analysis suggested that ospemifene was effective against dyspareunia, vaginal dryness, endometrial thickness, and percentage changes in superficial and parabasal cells. Vaginal pH was most affected by soy isoflavone vaginal gel. Ospemifene was effective for AV symptoms. Conclusions: This systematic review compared the effects of several therapeutic agents on symptoms of AV through a network meta-analysis. This study provides objective evidence for clinical treatment and efficacy management in AV. (J Menopausal Med 2018;24:1-10)

      • KCI등재

        Serum Vitamin D Level Related to Coffee Consumption in Korean Young Adults Using the 5th Korea National Health and Nutrition Examination Survey

        Lim, Hee-Sook,Lee, Hae-Hyeog,Byun, Dong-Won,Lee, Bora,Enkhbold, Temuulee,Kim, Tae-Hee The Korean Society for Bone and Mineral Research 2017 대한골대사학회지 Vol.24 No.4

        <P><B>Background</B></P><P>Even young adults are highly interested in their osteological health, yet their calcium intake does not match the level of such interest. Increase in bone loss is known to be associated with higher intake of caffeine and coffee consumption among the young Korean is rising steadily. This study was conducted to reveal the relationship between coffee consumption and serum vitamin D level in Korean young adults.</P><P><B>Methods</B></P><P>This study analyzed potential difference in lifestyle and concentration of vitamin D in blood in relation to coffee intake frequency of 2,523 subjects on the basis of data from the 5th Korea National Health and Nutrition Examination Survey.</P><P><B>Results</B></P><P>According to the analysis, groups of males, with high income, frequent social activity followed by alcohol consumption and smoking, and high rate of dining out showed a high frequency of coffee consumption. Vitamin D concentration among the groups was 16.2±5.3 mL and 80.3% of them were considered to be vitamin D-deficient. All the groups appeared to have deficiencies compared to males who did not consume caffeine at all.</P><P><B>Conclusions</B></P><P>The practice of having an adequate amount of coffee is needed, and more efforts should be done to improve vitamin D intake among young adults.</P>

      • KCI등재

        Vitamin D Proliferates Vaginal Epithelium through RhoA Expression in Postmenopausal Atrophic Vagina tissue

        Lee, Arum,Lee, Man Ryul,Lee, Hae-Hyeog,Kim, Yeon-Suk,Kim, Jun-Mo,Enkhbold, Temuulee,Kim, Tae-Hee Korean Society for Molecular and Cellular Biology 2017 Molecules and cells Vol.40 No.9

        Postmenopausal atrophic vagina (PAV) is the thinning of the walls of the vagina and decreased lugae of the vagina. PAV is caused by decreased estrogen levels in postmenopausal women. However, the harmful effects of hormone replacement therapy (HRT) have resulted in considerable caution in its use. Various estrogen agonist treatment options are available. Vitamin D is influences the regulation of differentiation and proliferation of various cells, especially tissues lining stratified squamous epithelium, such as the vaginal epithelium. In this study, we hypothesized that vitamin D could provide an alternative and a safe treatment option for PAV by promoting the proliferation and differentiation of the vaginal epithelium. Thirty six patients were enrolled in this case-control study. Vitamin D associated proteins in a vitamin D and sex hormone treated vaginal epithelial cell line as well as normal and PAV tissues were measured. To confirm of cell-to-cell junction protein expression, cell line and tissue studies included RT-PCR, immunohistochemistry staining, and immunoblot analyses. The expression of cell-to-cell junction proteins was higher in women with symptoms of atrophic vagina tissue compared to women without the symptoms. Vitamin D stimulated the proliferation of the vaginal epithelium by activating p-RhoA and Erzin through the vitamin D receptor (VDR). The results suggest that vitamin D positively regulates cell-to-cell junction by increasing the VDR/p-RhoA/p-Ezrin pathway. This is the first study to verify the relationship of the expression of RhoA and Ezrin proteins in vaginal tissue of PAV.

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