Chi-Chen Chang

China Medical University Hospital, 臺中市, Taiwan, Taiwan

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Publications (57)116.35 Total impact

  • [show abstract] [hide abstract]
    ABSTRACT: Hyperlipidemia and oxidation play major roles upon cardiovascular diseases (CVDs). C-phycocyanin (CPC), the major component in blue-green algae, possesses antiinflammatory and radical scavenging properties. Herein we aimed to investigate the effect of CPC upon lipid metabolism and its antioxidant effects. Golden Syrian hamsters were randomly assigned to five groups: (1) control; (2) 0.2% cholesterol; (3) 0.2% cholesterol+ 1% lopid; (4) 0.2% cholesterol+ 0.25% CPC; and (5) 0.2% cholesterol+ 1.25% CPC. All animals were sacrificed after 8-week feeding. Serum cholesterol, triglyceride (TG), low-density lipoprotein (LDL), glutamate-oxaloacetate transaminase (GOT), and glutamate-pyruvate transaminase (GPT) were examined. The diene conjugation in the Cu(2+)-mediated oxidation of LDL was measured. The protein levels of several antioxidative enzymes including catalase (CAT), superoxide dismutases (SOD), and glutathione peroxidase (GPx) of liver were assayed. HepG2 cells were cultured in medium containing various concentrations of CPC (0, 1, 15, and 30 μM). The mRNA concentrations of LDL receptor, 3-hydroxy-3-methylglutaryl-coenzyme A (HMG CoA) reductase, SOD-1 and GPx of HepG2 cells in each group were analyzed. CPC was effective in lowering serum cholesterol, total cholesterol (TC), TG, LDL, GOT, and GPT. CPC was found to decrease the malondialdehyde (MDA) equivalents and delay the diene conjugation in the Cu(2+)-mediated oxidation of LDL. CPC increase the enzyme expressions of CAT, SOD, and GPx. CPC concentrations were positively correlated with the mRNA level of LDL receptor while the mRNA levels of HMG CoA reductase, SOD-1, and GPx in HepG2 cells were not affected. The lipid-lowering and antioxidation effects of CPC suggest its roles in prevention of CVD and atherosclerotic formation.
    Journal of traditional and complementary medicine. 01/2013; 3(1):41-7.
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    ABSTRACT: Diabetic retinopathy (DR) is a microvascular complication of diabetes with a complex multifactorial pathogenesis. We aimed to investigate whether chromosome 15q21-22-related gene polymorphisms could be used as markers of DR susceptibility in type 2 diabetic (T2D) individuals. Individuals were divided into three groups: (1) T2D with nonproliferative DR (NPDR; n=102); (2) T2D with proliferative DR (PDR; n=72); (3) T2D without DR (n=573). Six single-nucleotide polymorphisms (SNPs) (rs7174997, rs3751624, rs8025011, rs17818837, rs2922220, and rs2414520) lying within chromosome 15q21-22 region were genotyped by using Illumina HumanHap550-Duo BeadChips. Genotypes/allelic frequencies and haplotypes for these polymorphisms in each group were compared. The MYO5C related SNP (rs3751624)*A related genotype and allele are associated with higher susceptibilities to DR, including PDR and NPDR. The rs3751624*GG/AA+AG percentages in each group are (1) 75.5%/24.5%, (2) 73.6%/26.4%, and (3) 82.5%/17.5%. In contrast, the other five SNPs in each group were not significantly different. One haplotype (G-A-G-G-T-G) appears significantly different between T2D individuals with and without DR. Other haplotype distributions were not significantly different between each group. The MYO5C related SNP (rs3751624)*A related genotype/allele and haplotype (G-A-G-G-T-G) might be associated with susceptibility for retinopathy in T2D individuals. Some chromosome 15q21-22* related genetic variations might contribute to the pathogenesis of DR.
    Genetic Testing and Molecular Biomarkers 03/2012; 16(5):442-8. · 1.44 Impact Factor
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    ABSTRACT: X-ray repair cross-complementing group 1 (XRCC1) and human 8-oxoguanine glycosylase 1 (hOGG1) play important roles in base excision repair. KCNQ genes comprising voltage-gated ion-channels related with cell stability. Angiotensin II type 1 receptor (AT1R) is related with angiogenesis, which influence endometriosis growth, invasion and regression. We aimed to investigate whether these polymorphisms were associated with endometriosis susceptibility. Women were divided [ 1 ]: endometriosis (n = 136 [ 2 ]); non-endometriosis groups (n = 112). XRCC1 (codon 107, 194, 399), hOGG1, KCNQ2, AT1R polymorphisms were amplified by PCR and detected by electrophoresis after restriction enzyme (RsaI, HpaII, MspI, Fnu4HI, Ava II, Dde I) digestions. Genotypes and allelic frequencies in both groups were compared. Proportions of XRCC1 Arg399Gln*GG/GA/AA and G/A allele between both groups were [ 1 ]: 41.9/53.7/4.4% and 68.8/31.2% [ 2 ]; 30.4/54.5/15.1% and 57.6/42.4% (p < 0.05). Other 5 polymorphisms (XRCC1 codon 107 and 194, hOGG1, KCNQ2, and AT1R) between both groups were non-significantly different. Proportions of XRCC1 107*AA/AG/GG and XRCC1 194*TT/TC/CC between both groups were [ 1 ]: 3.7/27.2/69.1% and 5.8/34.6/59.6% [ 2 ]; 2.6/21.4/75.8% and 11.6/37.5/50.9%. HOGG1*CC/CG/GG, KCNQ2*AA/AC/CCC and AT1R*AA/AC/CC were [ 1 ]: 14.8/42.6/42.6, 14/41.9/44.1 and 92.6/7.4/0% [ 2 ]; 11.6/50/38.4, 17/50/33 and 100/0/0%. We concluded that XRCC1 399 Arg-related genotype and allele are correlated with higher susceptibility to endometriosis, which suggested its association with endometriosis pathogenesis. XRCC1 107 and 194, hOGG1, KCNQ2, and AT1R are not associated with endometriosis susceptibility.
    Gynecological Endocrinology 11/2011; 28(4):305-9. · 1.30 Impact Factor
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    ABSTRACT: Asthma, one major respiratory consequence, might be caused by a complex interaction between multiple candidate genes and environmental factors. Herein, we aimed to investigate whether Janus kinase (JAK)-1 gene polymorphisms are associated with asthma susceptibility. Patients were divided into two groups: (1) asthma (n=117) and (2) nonasthma (n=60). The JAK-1 polymorphisms (rs2780895, rs10789166, rs4916008, rs2780885, rs17127114, and rs3806277) were amplified by polymerase chain reaction and detected by electrophoresis after restriction enzyme (HpyCH4IV, Tsp45I, HpaII, XmnI, MspI, and HpaII) digestions. Genotypes, allelic frequencies, and association of haplotypes in both groups were compared. JAK-1 rs2780895 gene polymorphism is associated with susceptibility to asthma. Distributions of JAK-1 rs2780895*CC/CT/TT and C/T allele in both groups are: (1) 80/4/16% and 82/18%; (2) 48/45/7% and 71/29%. Other 5 JAK-1 SNPs (rs10789166, rs4916008, rs2780885, rs17127114, and rs3806277) are not associated with asthma susceptibilities. Distributions of JAK-1 rs10789166*AA/AG/GG, rs4916008*CC/CT/TT, rs2780885*CC/CT/TT, rs17127114*AA/AG/GG, rs3806277*AA/AG/GG in both groups are: (1) 50/40/10%, 42/49/9%, 50/40/10%, 9/37/54%, 8/35/57%; (2) 43/50/7%, 40/50/10%, 50/43/7%, 7/48/45%, 6/42/52%. Haplotype analyses for JAK-1 gene polymorphisms (rs2780895-rs10789166-rs4916008-rs2780885-rs17127114-rs3806277) revealed that JAK-1 haplotypes are not associated with asthma susceptibilities. JAK-1 rs2780895 C-related genotype and allele are associated with higher susceptibility to asthma. JAK-1 rs10789166, rs4916008, rs2780885, rs17127114, and rs3806277 single-nucleotide polymorphisms are not associated with asthma development. Some JAK-related genetic variations might be associated with asthma pathogenesis, which deserve further surveys.
    Genetic Testing and Molecular Biomarkers 08/2011; 15(12):841-7. · 1.44 Impact Factor
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    ABSTRACT: Kawasaki disease (KD) involves a complex interaction of immunoinflammatory process, cytokine activation, and genetic factors. We aimed to investigate whether genetic variations in a major histocompatibility complex (MHC) class could be used as markers of susceptibility in KD and coronary artery aneurysm lesions (CALs). Individuals were divided into following groups: (1) normal controls; (2) KD with CAL; (3) KD without CAL. Polymorphisms for MHC class I chain-related genes A (MICA) (rs2301747, rs2256184, rs2848716), MICB (rs2855804, rs3132464, rs2516400), BAT3 (rs750332), MSH5 (rs1150793), and chromosome 6 open reading frame 27 (C6orf27, rs707928) were genotyped with polymerase chain reaction and the TaqMan(®) allelic discrimination assay. Genotypes, alleles, and haplotype in each group were compared. Genotype and allele frequency of MICB*rs2516400 polymorphisms in each group were significantly different. MICB (rs2516400)*C-related genotypes/alleles are correlated with development of KD and CAL. Proportions of rs2516400*TT/TC/CC were (1) 1/39/60%, (2) 0/0/100%, and (3) 0/0/100%. Other single-nucleotide polymorphisms were not associated with KD susceptibilities. Haplotypes (rs2301747-rs2256184-rs2848716-rs2855804-rs3132464-rs2516400-rs750332-rs1150793-rs707928) G-G-G-C-T-C-T-A-A, C-A-G-T-T-C-T-A-A, and G-G-G-C-C-C-T-A-A were associated with higher susceptibilities for KD. The G-G-G-T-T-T-T-G-G and C-G-G-T-T-T-T-A-A haplotypes were associated with lower susceptibilities. MICB*rs2516400 polymorphisms and some MHC class I-related haplotypes are associated with KD susceptibility. MICB and MHC class I genetic variations might contribute to the pathogenesis of KD and CAL.
    Genetic Testing and Molecular Biomarkers 08/2011; 15(11):755-63. · 1.44 Impact Factor
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    ABSTRACT: Both Gonal-F and Puregon, especially in their high-dosage administration, might inhibit the endometrial cell proliferation in the initial 48-hour culture. After 72-hour culture, Gonal-F persisted the inhibition of the endometrial growth, whereas Puregon reversed its effect to enhance endometrial growth. Endometrial proliferation or regeneration during menstrual cycle is regulated by sexual hormones. However, the effect of gonadotropins on the endometrial cell growth remains obscure. Herein, we aimed to investigate the effects of recombinant follicle-stimulating hormones (r-FSHs) (Gonal-F and Puregon) on the proliferation of human endometrial cells in vitro. Human endometrial cells (RL95-2 cells) were obtained commercially and cultured in the serum-containing media in the presence of r-FSHs (Gonal-F and Puregon at concentrations of 0mIU/mL, 200mIU/mL, 400mIU/mL, and 600mIU/mL) up to 72 hours. According to the gonadotropin concentrations, all cultured endometrial cells were divided into four groups: (1) 0mIU/mL (control); (2) 200mIU/mL; (3) 400mIU/mL; and (4) 600mIU/mL. After 72-hour culture, endometrial cell proliferations were assessed overnight by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The influences of different r-FSH agents and dosages on endometrial cell proliferation in each group were evaluated and compared. In the four Gonal-F groups, the cell absorption (control and 200mIU/mL, 400mIU/mL, and 600mIU/mL Gonal-F) after 24/48/72-hour cultures were as follows: (1) 0.57/0.7/0.82; (2) 0.56/0.66/0.78; (3) 0.55/0.64/0.77; and (4) 0.51/0.61/0.78. After 48 hours, higher dosage of Gonal-F appeared to significantly inhibit the endometrial cell proliferation. After 72-hour culture, all three dosages of Gonal-F appeared to inhibit the endometrial cell proliferation similarly. In Puregon groups, the cell absorptions were as follows: (1) 0.62/0.53/0.62; (2) 0.61/0.5/0.66; (3) 0.61/0.49/0.66; and (4) 0.64/0.49/0.66. Puregon administration displayed initial inhibition and subsequent stimulation effects on the endometrial cells. Both Gonal-F and Puregon, especially in their high-dosage administration, appeared to inhibit the endometrial cell proliferation in the initial 48-hour culture. After 72-hour culture, Gonal-F persisted the inhibition of the endometrium, whereas Puregon reversed its effect by enhancing the endometrial growth. The differences might be because of the different formulations or molecular structures existing between alpha and beta follitropins.
    Taiwanese journal of obstetrics & gynecology 03/2011; 50(1):42-7.
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    ABSTRACT: Endometrial proliferation or regeneration during menstrual cycle is regulated by sexual hormones. However, the effect of gonadotrophins on the endometrial cell growth remains obscure. Herein, we aimed to investigate the effects of r-FSH (Gonal-F, Puregon) and progesterone on the proliferation of human endometrial cells in-vitro. According as gonadotrophin concentrations, the follicular-phase endometrial cells were divided into six groups: (1) 0 (controls), (2) 1; (3) 10; (4) 100; (5) 1000; (6) 100,000 μIU/ml. The cell countings with microscopy and cell proliferation kit assay were used to assess the endometrial cell proliferations. In Gonal-F groups, the cell absorptions (%) after 24/48 h culture were: (1) 100/100; (2) 103.8/102.3; (3) 104.8/102.8; (4) 102.3/101.3; (5) 96.3/94.2; (6) 86.8/84.3. In Puregon groups, the cell absorptions were: (1) 100/100; (2) 102.8/101.9; (3) 103/102.3; (4) 103.9/103.5; (5) 102.9/102.4; (6) 103.7/103.2 (non-different). In progesterone groups, the cell absorptions were: (1) 100/100; (2) 99.1/101.9; (3) 83.5/80.4; (4) 80.7/82.4. Higher dosage of Gonal-F (100,000 μIU/ml) and progesterone (10, 100 μg/ml) appeared the significant inhibition upon endometrium. We conclude that lower dosages of Gonal-F, Puregon, and progesterone appear the non-significant influence upon endometrium. Higher dosage of Gonal-F (10,000 μIU/ml) and progesterone (10, 100 μg/ml), but not Puregon, might interfere with the endometrial proliferation during follicular phase.
    Gynecological Endocrinology 02/2011; 27(2):110-6. · 1.30 Impact Factor
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    ABSTRACT: Diosgenin, a traditional Yam extraction, has been used in hormone replacement for menopausal women. We aimed to investigate the influences of diosgenin administration upon the MMP-2 and -9 activity and expression and reproductive hormones of ovariectomized (OVX) rats, a model of menopausal status. Seven-week old female Wistar rats with bilateral OVX or sham operation (controls) were divided and administered different dosages of diosgenin (0, 10, 50, or 100 mg/kg/day) for 8 weeks. Serum was then sampled for progesterone (P4) and estradiol (E2) assay and uterine horns harvested. Myometrial MMP-2 and -9 activity and expression were surveyed and myometrial collagen expression was also assayed. The results show higher body weight in OVX rats across the 8 weeks post surgery and no significant differences were noted among OVX or Sham rats with diosgenin supplements. There were lower P4 and E2 concentrations in OVX rats compared to Sham rats, and higher P4 concentration of Sham rats post diosgenin supplement. MMP-2 and -9 mRNA expression and activity was lower in OVX rats, although higher MMP-2 and lower MMP-9 activity/mRNA expression was observed in OVX rats post diosgenin supplementation. Collagen mRNA expression was higher in OVX rats compared to Sham controls, and diosgenin administration decreased collagen mRNA expression in OVX rats. In conclusion, diosgenin is associated with gelatinase expression and collagen metabolism in OVX rats. Diosgenin administration can partially reverse the effects of OVX upon MMP functions and hormone status. Adequate diosgenin supplement might modulate myometrial gelatinase expression and collagen metabolism in menopausal subjects.
    International journal of biological sciences 01/2011; 7(6):837-47. · 3.17 Impact Factor
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    ABSTRACT: We aimed to investigate the effects of arsenic (As), benomyl (Ben), and carbendazim (Carb) on endometrial cells. Human endometrial cells were obtained during diagnostic curettage. All cultured endometrial cells were divided into four groups: (1) 0 M (controls), (2) 10(-6) M, (3) 10(-5) M, (4) 10(-4) M for As, Ben and Carb. After 24 and 48 hours in culture, endometrial cell proliferations were assessed by diphenyltetrazolium bromide assay. The influences of different concentrations of As, Ben and Carb upon the endometrium were compared. During the first 24 hours, As, Ben and Carb appeared to have insignificant influences upon endometrial growth. After 48 hours in culture, all three agents significantly inhibited endometrial growth. In As groups, cell absorption after 48 hours culture were 100% (group 1), 82.1% (group 2), 43.6% (group 3) and 35.3% (group 4). In Ben groups, cell absorption was 100% (1), 75.9% (2), 66.4% (3) and 49. 6% (4). In the Carb groups, cell absorption was 100% (1), 70.4% (2), 73.0% (3) and 76.7% (4). The agents As, Ben and Carb appear to have inhibitory effects upon endometrial cells after 48 hours in culture.
    Taiwanese journal of obstetrics & gynecology 12/2010; 49(4):449-54.
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    ABSTRACT: Leiomyomas (myoma or fibroid) are the most common gynecologic tumors that occur in women of reproductive age, but their molecular pathogenesis is still unknown. Since the growth of leiomyomas involve numerous vascular factors, an association between the leiomyoma and growth factors is suspected. Vascular endothelial growth factor (VEGF) is one of the most important angiogenic growth factors. VEGF regulates angiogenesis and mediates sex steroid-induced cell growth and differentiation. VEGF-mediated activities seem to contribute to the pathogenesis of leiomyoma. Genetic variations, including polymorphisms, in VEGF might also be associated with the complex pathogenesis of leiomyomas. Here, we performed a systematic review of the roles of VEGF and its polymorphisms in the pathogenesis of leiomyoma.
    Taiwanese journal of obstetrics & gynecology 09/2010; 49(3):247-53.
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    ABSTRACT: To investigate the roles of insulin-like growth factor II (IGF2), myeloperoxidase (MPO), E-cadherin (CDH1), urokinase and xeroderma pigmentosum group A and D (XPA, XPD) polymorphisms upon leiomyoma susceptibility. Women were divided into: group 1, leiomyoma (n=158); group 2, non-leiomyoma (n=156). Polymorphisms (IGF2 exon 9*A/G, MPO-463*A/G, CDH1-Pml I, urokinase-ApaL, XPA*A-23G, XPD*Lys751Gln) were amplified by polymerase chain reaction and detected by electrophoresis after restriction enzyme digestion. Genotype and allelic frequencies were compared between both groups. Associations between leiomyoma with IGF2 and CDH1 polymorphism exist. Proportions of IGF2 exon 9*AA/AG/GG in and CDH1* CC/CT/TT in the groups were: group 1, 38/39.2/22.8% and 27.8/66.5/5.7%; group 2, 22.4/53.9/23.7% and 21.2/64.1/14.7. MPO, urokinase, XPA and XPD in both groups were non-significantly different. Proportions of MPO*AA/AG/GG, urokinase*CC/CT/TT, XPA*AA/AG/GG and XPD*AA/AC/CC were: group 1: 1.9/23.4/74.7%, 0.6/7/92.4%, 20.9/55.1/24%, 85.4/14.6/0%; group 2: 3.8/24.4/71.8%, 1.3/4.5/94.2%, 22.4/53.9/23.7%, 84.6/15.4/0%. IGF2*A allele and CDH1*C allele were correlated with leiomyoma susceptibility, which may be associated with leiomyoma development. MPO, urokinase, XPA and XPD polymorphisms are not related to leiomyoma susceptibilities.
    Anticancer research 06/2010; 30(6):2203-8. · 1.71 Impact Factor
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    ABSTRACT: CAPSULE: HLA-B associated transcript (BAT) 2, 3, and 5 polymorphisms and haplotypes are associated with Kawasaki disease (KD) and coronary artery aneurysm (CAA) formations. KD, an acute vasculitis with unknown etiology, involves a complex interaction of immuno-inflammatory process, cytokines activation, and genetic factors. We aimed to investigate if genetic variants of human lymphocyte antigen (HLA)-BAT2, 3, and 5 (BAT2, 3, and 5) could be used as markers of susceptibility in KD and CAA. Methods: Individuals were divided into three groups: (1) normal controls; (2) KD with CAA; and (3) KD without CAA. Polymorphisms for BAT2 (-8671, 16483), BAT3 (8854, 2-24), and BAT5 (22655, 9569) were genotyped by PCR system with TaqMan allelic discrimination assay. Genotype/allelic frequencies and haplotypes (BAT2(-8671)-BAT2(16483)-BAT3(8854)-BAT3(2-24)-BAT5(22655)-BAT5(9569)) in each group were compared. Genotype distribution and allele frequency of BAT2 -8671, BAT3 8854, and BAT5 22655, 9569 polymorphisms in each group were significantly different. BAT2 -8671*G, BAT3 8854*C, BAT5 22655*C, and 9569*A-related genotypes and alleles are correlated with the developments of KD and CAA. BAT haplotypes of ATTGTG and ATCATG are associated with higher susceptibilities of KD with CAA susceptibility. BAT2 -8671, BAT3 8854, and BAT5 22655, 9569 polymorphisms as well as BAT haplotypes (ATTGTG and ATCATG) might be associated with higher KD susceptibility and CAA formation. HLA-B region polymorphisms might contribute to the pathogenesis of KD and CAA.
    Journal of Clinical Laboratory Analysis 01/2010; 24(4):262-8. · 1.36 Impact Factor
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    ABSTRACT: Mitochondria are important organelles in cell biology. We aimed to study the effects of mitochondrial DNA variations in cumulus cells (CCs) upon in vitro fertilization and embryo transfer (IVF-ET) outcomes. A total of 51 women undergoing IVF-ET were recruited for the study. The CCs were collected during oocyte retrievals. Mitochondria DNA 4977-bp deletion (dmtDNA-delta5Kb) and copy numbers (MCN) of CCs were analyzed by polymerase chain reaction. The relationships of dmtDNA-delta5Kb and MCN with patients' age, embryo qualities and pregnancy rates (PRs) were detected and compared. PRs were positively correlated with younger age, better transferred embryo qualities and lower dmtDNA-delta5Kb ratios in CCs. The dmtDNA-delta5Kb status was positively associated with older age and higher MCN but was not associated with embryo morphologic scoring. The dmtDNA-delta5Kb ratios of transferred embryos in pregnancy and nonpregnancy groups were 0% and 10.4%, respectively. The dmtDNA-delta5Kb in > or = 34-year-old and <34-year-old groups were 6.9% and 3.2%, respectively. The dmtDNA-delta5Kb and MCN statuses of CCs are negatively associated with PRs, which might be potential tools for oocyte evaluation and embryo selections during IVF-ET.
    The Journal of reproductive medicine 01/2010; 55(11-12):491-7. · 0.75 Impact Factor
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    ABSTRACT: To search for novel peptides and common binding motif that specifically bind to endometriosis. Prospective study. Department of Biological Science and Technology in national university. Specimens were divided into [1] ectopic endometrium (n = 10); [2] eutopic endometrium (n = 10). Peptides specifically binding to endometriosis are screened from a phage-displaying peptide library (Ph.D.-12) by using whole-cell screening technique after an adsorption elution amplification procedure. Combinatorial peptide libraries were used to identify small molecules that bind with high affinity to receptor molecules and mimic the interaction with natural ligands. Few pans of positive phage clones with significantly positive signals were identified by ELISA and analyzed by DNA sequencing. During the biopanning processes, the recovered phage number (10(6) pfu/mL) in parts 1, 2, 3, 4, and 5 of the study were 9, 33, 82, 142, and 169. Nine phages consistently had residue Arg, whereas six clones had a consensus motif of Arg-X-Arg-X-X-X-X-Arg. The biotin-labeled peptide bound to endometriosis cells in a dose-dependent manner, yet the control peptide revealed lesser binding activity. The novel motif is associated with higher affinity of endometriosis, which might be useful in endometriosis targeting and as potential antiendometriosis therapies. We provide one potential approach for novel therapies toward endometriosis.
    Fertility and sterility 03/2009; 92(6):1850-5. · 3.97 Impact Factor
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    ABSTRACT: To investigate whether the gene polymorphisms for p21, X-ray repair cross-complementing group 1 (XRCC1), human 8-oxoguanine glycosylase 1 (hOGG1), and dopamine D1 and D2 receptors (DRD1, -2) are associated with leiomyoma susceptibility. Prospective study. Departments of gynecology and genetics in a medical center. Women were divided into two groups: leiomyoma (n = 120) and nonleiomyoma (n = 112). The p21 codon 31, XRCC1 codon 399, hOGG1 codon 326, DRD1-48, and DRD2 codon 313 polymorphisms were genotyped by polymerase chain reaction with restriction enzyme digestions (Blp I, MspI, Fnu4HI, Dde I, and NcoI, respectively). Genotypes and allelic frequencies. The p21 codon 31(*)C- and DRD2 codon 313(*)T-related genotypes/alleles were associated with the presence of leiomyomas. The proportions of p21(*)CC/CA/AA and DRD2(*)CC/CT/TT in both groups were 27.5/68.3/4.2% and 12.5/51.7/35.8% (leiomyoma); and 14.3/51.8/33.9% and 33.9/40.2/25.9% (nonleiomyoma). XRCC1, hOGG1, and DRD1 were not correlated with the presence of leiomyomas. XRCC1(*)GG/GA/AA, hOGG1(*)TT/TA/AA, and DRD1(*)GG/GA/AA were 54.2/37.5/8.3%, 36.7/44.2/19.1%, and 3.3/25.8/70.8% (leiomyoma); and 48.2/47.3/4.5%, 43.6/41/15.4%, and 3.6/25/71.4% (nonleiomyoma). The p21 codon 31(*)C- and DRD2 codon 313(*)T-related genotypes/alleles were associated with the presence of leiomyoma. XRCC1, hOGG1, and DRD1 were not correlated with leiomyoma development.
    Fertility and sterility 02/2009; 91(3):869-77. · 3.97 Impact Factor
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    ABSTRACT: Asthma is caused by a complex interaction between multiple genes and environmental factors. Herein we aimed to investigate whether signal transducer and activator of transcription (STAT2), toll-like receptors 4 (TLRs4) and CD40-related polymorphisms are associated with asthma susceptibility. Children were divided: (1) asthma (n=117); (2) normal controls (n=60). The polymorphisms of STAT2, TLR4 and CD40 polymorphism were analyzed by PCR-RFLP genotyping. Genotypes, allelic frequencies and association of haplotypes in both groups were compared. STAT2*C related genotypes, but not TLR4 and CD40 polymorphism, are associated with higher susceptibility for asthma. Distributions of STAT2*CC/CG/GG and C/G allele in both groups are: (1) 0/11.1/88.9 % and 5.6/94.4%; (2) 0/1.7/98.3% and 0.8/99.2% (p<0.05). Proportions of TLR4*rs10983755 AA/AG/GG and rs1927914 CC/CT/TT homozygote are: (1) 35.1/8.5/56.4% and 9.4/56.4/34.2%; (2) 35/8.3/56.7% and 16.7/48.3/35% (non-difference). Proportions of CD40*rs1883832 CC/CT/TT, rs3765459 AA/AG/GG, and rs4810485 TT/GT/GG are: (1) 29.9/53/17.1%, 6.8/47.9/45.3 and 18.8/62.4/18.8%; (2) 36.7/41.7/21.6%, 1.6/46.7/ 51.7 and 15/51.7/33.3% (non-difference). Haplotype analyses for TLR4 and CD40 genes revealed their non-association and non-additional effect upon asthma susceptibilities. STAT2*C related genotypes and alleles are associated with asthma susceptibilities and pathogenesis. There were non-association and non-additional effects of TLR4/CD40 gene polymorphisms and haplotypes upon asthma risk.
    International journal of biological sciences 01/2009; 5(1):74-81. · 3.17 Impact Factor
  • Taiwanese journal of obstetrics & gynecology 10/2008; 47(3):357-9.
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    ABSTRACT: Yam or diosgenin (extracted from the root of wild yam) is traditionally used for hormone replacement in menopausal women. Calpains are crucially related to the degradation of myofibrillar proteins in skeletal muscle. This study aimed to investigate the effects of yam and diosgenin on the calpain isoform expression in ovariectomized rats, a model of menopausal status. Female rats were divided into: (1) controls; (2) ovariectomized rats; (3) ovariectomized rats receiving yam (250, 750, 1,500 mg/kg/day); (4) ovariectomized rats receiving diosgenin (10, 50, 100 mg/kg/day). Yam and diosgenin were administered for 8 weeks. The expression of mu- and m-calpain in skeletal muscles was determined by reverse transcriptase-polymerase chain reaction. The mu-calpain/beta-actin and m-calpain/beta-actin ratios in the control group (0.9 and 1.09, respectively) were significantly higher than those in the ovariectomized group (0.58 and 0.72, respectively). In the yam group, the expression of mu- and m-calpain was lowest in the ovariectomized group receiving no supplementation and lower in the 250 mg group compared with the 750 and 1,500 mg groups (for 0, 250, 750 and 1,500 mg dosage groups, mu-calpain, 0.58, 0.88, 1.24 and 1.13, respectively; m-calpain, 0.72, 1.02, 1.38 and 1.47, respectively). In contrast, there were no significant differences in the expression of mu- and m-calpain mRNAs among the different diosgenin dosage groups (for 0, 10, 50 and 100 mg of diosgenin, mu-calpain, 0.58, 0.56, 0.62 and 0.58, respectively; m-calpain, 0.72, 0.58, 0.71 and 0.54, respectively). Decreased expression of mu- or m-calpain was observed in the ovariectomized group compared with the normal controls. Yam, but not its extract (diosgenin), is associated with the regulation of calpain isoforms in ovariectomized rats. Adequate yam supplements might improve the muscular calpain-related physiopathology associated with menopausal status.
    Taiwanese journal of obstetrics & gynecology 07/2008; 47(2):180-6.
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    ABSTRACT: DNA repair systems act to maintain genome integrity in the face of replication errors, environmental insults, and the cumulative effects of age. Genetic variants in DNA repair genes such as X-ray repair cross-complementing group 4 (XRCC4) might influence the ability to repair damaged DNA. Herein we aimed to investigate whether some XRCC4-related polymorphisms were associated with endometriosis susceptibility. Women were divided: (1) severe endometriosis (rAFS stage IV, n = 136) and (2) nonendometriosis groups (n = 112). The polymorphisms of XRCC4 codon 247, XRCC4 promoter -1394, and XRCC4 intron 3 insertion/deletion (I/D) polymorphism were amplified by PCR and detected by electrophoresis after restriction enzyme (BBS I, Hinc II) digestions. Genotypes and allelic frequencies in both groups were compared. We observed that XRCC4 codon 247*A and XRCC4 promoter -1394*T related genotypes, but not XRCC4 intron 3 I/D polymorphism, are associated with higher susceptibility for endometriosis. Distributions of XRCC4 codon 247*C homozygote/heterozygote/A homozygote, and C/A allele in both groups were: (1) 89/9.5/1.5% and 93.7/6.3%; (2) 97.3/2.7/0%, and 98.7/1.3% (P < 0.05). Proportions of XRCC4 promoter -1394*T homozygote/heterozygote/G homozygote and T/G allele in both groups were: (1) 94.1/5.2/0.7% and 96.7/3.3%, and (2) 79.4/17.9/2.7% and 88.4/11.6% (P < 0.005). Proportions of XRCC4*I homozygote/heterozygote/D homozygote and A/C allele in both groups were: (1) 67.6/30.9/1.5% and 83.2/16.8%, and (2) 70.5/24.1/5.4% and 82.6/17.4% (nondifference). We conclude that XRCC4 codon 247*A and XRCC4 promoter -1394*T related genotypes and alleles, but not XRCC4 intron 3 I/D polymorphism, might be associated with endometriosis susceptibilities and pathogenesis.
    Molecular Reproduction and Development 05/2008; 75(5):946-51. · 2.81 Impact Factor
  • Yao-Yuan Hsieh, Chi-Chen Chang, Horng-Der Tsai
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    ABSTRACT: Both gonadotropin-releasing hormone (GnRH) analogs and antagonists have been used for pituitary desensitization during controlled ovarian hyperstimulation (COH). We aimed to determine the minimum effective daily dose of GnRH antagonist in women undergoing COH. We also compared the efficiency of a GnRH antagonist and a GnRH agonist. Women undergoing in vitro fertilization/intracytoplasmic sperm injection and embryo transfer were divided into five groups: (1) cetrorelix 0.25 mg ( n = 86); (2) cetrorelix 0.2 mg ( n = 28); (3) cetrorelix 0.15 mg ( n = 30); (4) leuprolide acetate (LA) 0.5 mg/day ( n = 58); (5) single half-dose LA depot 1.88 mg ( n = 49). Cetrorelix was administered daily from menstrual day 8 until the day of human chorionic gonadotropin administration. LA or LA depot was started on day 21 of the previous menstrual cycle. We observed lower gonadotropin (Gn) dosages, estradiol (E2) levels and reduced risk of ovarian hyperstimulation syndrome (OHSS) in the GnRH antagonist groups. A higher risk of luteinizing hormone (LH) surge was noted in cetrorelix 0.2 and 0.15 mg groups. Gn dosages (IU)/E2 levels (pg/mL) in each group were: (1) 1,949.4/1,191.1; (2) 1,869.6/1,010.8; (3) 1,856.7/1,023.6; (4) 2,184.5/1,323.6; and (5) 2,103.5/1,313.5, respectively. LH/OHSS risks were: (1) 3.5%/5.8%; (2) 7.1%/3.6%; (3) 13.3%/3.3%; (4) 3.4%/8.6%; and (5) 2%/8.2%, respectively. Number of oocytes/embryos/grade I, II embryos were: (1) 9.4/7.9/5.8; (2) 7.5/4.2/3.6; (3) 6.3/4.1/3.1; (4) 12.3/8.9/6.6; and (5) 11.8/8.4/6.1, respectively. There was no significant difference in terms of clinical outcomes between groups 1, 4 and 5, except for higher abortion rates (AR) in group 1. Pregnancy rate (PR)/implantation rate (IR) ratios in groups 1, 4, and 5 were statistically higher than those in groups 2 and 3. Chemical PR/IR/AR were: (1) 30.2%/5.9%/7%; (2) 21.4%/5.1%/7.1%; (3) 16.7%/4.1%/10%; (4) 32.8%/5.5%/8.6%; and (5) 30.6%/5.7%/8.2%, respectively. The lowest effective dosage of cetrorelix for pituitary desensitization during COH luteolysis is 0.25 mg, resulting in a comparable PR but a higher AR when compared with GnRH agonist.
    Taiwanese journal of obstetrics & gynecology 04/2008; 47(1):66-74.

Publication Stats

367 Citations
16 Downloads
116.35 Total Impact Points

Institutions

  • 2004–2012
    • China Medical University Hospital
      • Department of Radiology
      臺中市, Taiwan, Taiwan
  • 2005–2011
    • National Chiao Tung University
      • Department of Biological Science and Technology
      Hsinchu, Taiwan, Taiwan
  • 2010
    • China Medical University (ROC)
      臺中市, Taiwan, Taiwan
  • 2008
    • Tunghai University
      • Department of Animal Science and Biotechnology
      Taichung, Taiwan, Taiwan
  • 2001–2007
    • Lin Shin Hospital
      臺中市, Taiwan, Taiwan
  • 2000–2005
    • Taichung Hospital
      臺中市, Taiwan, Taiwan