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Chen HX, Tsai LH, Chang CH, Wu HC, Lin CC, Lin CH, Yeh CC, Yang CR, Lien CS, Chang YH, Liang JA, Chen GH, Hsiao PJ, Hsieh PF, Huang CP. Enzalutamide Prior to Radium-223 Is Associated with Better Overall Survival in Metastatic Castration-Resistant Prostate Cancer Patients Compared to Abiraterone-A Retrospective Study. Cancers (Basel) 2023; 15:3516. [PMID: 37444626 DOI: 10.3390/cancers15133516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023] Open
Abstract
Metastatic castration-resistant prostate cancer (mCRPC) is a progressive stage of prostate cancer that often spreads to the bone. Radium-223, a bone-targeting radiopharmaceutical, has been shown to improve the overall survival in mCRPC in patients without visceral metastasis. However, the impact of prior systemic therapy on the treatment outcome of mCRPC patients receiving radium-223 remains unclear. This study aimed to investigate the optimal choice of systemic therapy before radium-223 in mCRPC patients. The study included 41 mCRPC patients who received radium-223 therapy, with 22 receiving prior enzalutamide and 19 receiving prior abiraterone. The results showed that the median overall survival was significantly longer in the enzalutamide group than in the abiraterone group (25.1 months vs. 14.8 months, p = 0.049). Moreover, the number of patients requiring blood transfusion was higher in the abiraterone group than in the enzalutamide group (9.1% vs. 26.3%, p = 0.16). The study also found that the number of doses of Radium-223 received was significantly associated with overall survival (≥5 vs. <5, HR 0.028, 95%CI 0.003-0.231, p = 0.001). Our study provides insights into the optimal treatment choice for mCRPC prior to radium-223, indicating that enzalutamide prior to radium-223 administration may have better outcomes compared to abiraterone in mCRPC patients without visceral metastasis.
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Affiliation(s)
- Hao Xiang Chen
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
| | - Li-Hsien Tsai
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
| | - Chao-Hsiang Chang
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
| | - Hsi-Chin Wu
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
- Department of Urology, China Medical University Beigang Hospital, Beigang, Yunlin 651012, Taiwan
| | - Ching-Chan Lin
- Department of Internal Medicine, Division of Hematology and Oncology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- Division of Hematology and Oncology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 70965, Taiwan
| | - Che-Hung Lin
- Department of Internal Medicine, Division of Hematology and Oncology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
| | - Chin-Chung Yeh
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
| | - Chi-Rei Yang
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
| | - Chi-Shun Lien
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
| | - Yi-Huei Chang
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- Department of Public Health, College of Public Health, China Medical University, Taichung 406333, Taiwan
| | - Ji-An Liang
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
- Department of Radiation Oncology, China Medical University Hospital, Taichung 40402, Taiwan
| | - Guan-Heng Chen
- Department of Urology, China Medical University Hsinchu Hospital, Hsinchu 30272, Taiwan
| | - Po-Jen Hsiao
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
| | - Po-Fan Hsieh
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
| | - Chi-Ping Huang
- Department of Urology, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
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Chuang YC, Lin CC, Chow PM, Lien CS, Tsui KH, Chou CL, Lee HY, Meng E, Kuo HC. A double-blind, randomized, placebo-controlled, parallel study to evaluate the efficacy and safety of imidafenacin in patients with overactive bladder in Taiwan. Low Urin Tract Symptoms 2020; 13:108-117. [PMID: 32844599 DOI: 10.1111/luts.12341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/10/2020] [Accepted: 07/28/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE This study evaluated the efficacy and safety of imidafenacin 0.1 mg twice daily vs placebo for Taiwanese patients with overactive bladder (OAB) after a 12-week oral administration. METHODS This randomized, double-blind, placebo-controlled, two-arm, parallel-group, prospective study enrolled 118 patients across 11 study sites in Taiwan. Subjects were randomized to imidafenacin or placebo in a 2:1 ratio and entered the 12-week treatment period. At the subsequent visits, efficacy outcome measures and safety assessments were collected for analysis. The primary efficacy outcome was the change in the mean number of micturitions per day. Secondary endpoints included mean changes from baseline in urgency episodes and urge incontinence episodes per day and mean volume voided per micturition. Safety outcomes were also collected and compared between groups. RESULTS A total of 78 and 40 patients were allocated to the imidafenacin and placebo groups, respectively. Among them, 100 patients (imidafenacin, 65 and placebo, 35) completed the trial. Compared with placebo, imidafenacin was significantly better at reducing the number of micturitions per day (-1.29 ± 2.23 vs -0.46 ± 3.49, P = .0171) and reducing the mean number of urge incontinence episodes (-0.15 ± 0.52 vs 0.04 ± 0.50, P = .0386) at week 12. Adverse events were reported in 35 subjects (44.9%) and 16 (40%) in the imidafenacin and placebo groups, including constipation (n = 3, 4), dry mouth (n = 11, 2), and urinary tract infection (n = 7, 4), respectively. One patient in the imidafenacin group had mild dysuria. CONCLUSION Imidafenacin demonstrated efficacy and safety in the treatment of OAB in Taiwanese patients.
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Affiliation(s)
- Yao-Chi Chuang
- Department of Urology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chih-Chieh Lin
- Department of Urology, Taipei Veterans General Hospital and Department of Urology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Po-Ming Chow
- Department of Urology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Shun Lien
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Ke-Hung Tsui
- Department of Urology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chieh-Lung Chou
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Hsiang-Ying Lee
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - En Meng
- Division of Urology, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hann-Chorng Kuo
- Department of Urology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, and Tzu Chi University, Hualien, Taiwan
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Abstract
Objectives: To investigate whether male patients with depression are at an increased risk of prostatitis.Methods: We used a universal insurance claims database in Taiwan from 2000 to 2010 to identify patients with newly diagnosed depression (n = 13,019) (depression cohort) and those without depression (n = 53,026) (comparison cohort). Both cohorts were matched by age and index year of depression incidence. Hazard ratios of prostatitis were calculated by multivariable Cox proportional hazard models.Results: The incidence of prostatitis demonstrated a 2-fold increase in the depression cohort in comparison with that observed in the non-depression cohort, with an adjusted hazard ratio of 1.70 after adjustment for age, occupation, urbanisation level, potential comorbidity and medication. Furthermore, patients with depression, relative to the non-depression cohort, were 1.85-fold more likely to develop acute prostatitis, 1.76-fold more likely to develop chronic prostatitis and 1.63-fold more likely to develop unspecific prostatitis. Major associations still existed; even those stratified by age, occupation, urbanisation level and comorbidity all showed greater increased risks of prostatitis in the depression cohort than in the non-depression cohort.Conclusions: Depression can be an independent factor associated with the increased risk of prostatitis for men. The incidence of chronic prostatitis is greater than that of acute prostatitis. Close surveillance for UTI and depression treatment and lifestyle intervention should be considered for men with high risk for prostatitis. The mechanism associated with the development of prostatitis in men with depression requires further study. In addition, the mechanism of prostatitis may need comprehensive investigation.
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Affiliation(s)
- Chi-Shun Lien
- Department of Urology, China Medical University and Hospital, Taichung, Taiwan
| | - Chi-Jung Chung
- Department of Health Risk Management, College of Public Health, China Medical University, Taichung, Taiwan.,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Cheng-Li Lin
- Management Office for Health Data, China Medical University and Hospital, Taichung, Taiwan
| | - Chao-Hsiang Chang
- Department of Urology, China Medical University and Hospital, Taichung, Taiwan.,Department of Medicine College of Medicine, China Medical University and Hospital, Taichung, Taiwan
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Huang CP, Lien CS, Lee SW, Chang CH, Lin CL. Adult balanoposthitis patients have a higher risk of Type 2 diabetes mellitus: A nationwide population-based cohort study. Urol Sci 2018. [DOI: 10.4103/uros.uros_6_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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Lien CS, Lee SW, Chang CH, Chung CJ, Lin CL, Huang CP. Adult balanoposthitis patients have a higher risk of type 2 diabetes mellitus: A nationwide population-based cohort study. Urological Science 2017. [DOI: 10.1016/j.urols.2017.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Ji-Yuen Siu J, Chen WC, Yang CR, Lien CS. Seminal vesicular calcifications: Our experience. Urological Science 2016. [DOI: 10.1016/j.urols.2016.05.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Lien CS, Huang CP, Chung CJ, Lin CL, Chang CH. Increased risk of anxiety among patients with urolithiasis: A nationwide population-based cohort study. Urological Science 2016. [DOI: 10.1016/j.urols.2016.05.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Chang YH, Chen GH, Hsieh PF, Lien CS, Huang CP, Yeh CC, Cheng WC, Liao YM, Lin CH, Lin CC, Chang CH, Wu HC, Yeh SP, Yang CR, Chiu CF. The impact of pathologic characteristics (lymphovascular invasion/squamous differentiation) on the efficacy of adjuvant chemotherapy for patients with upper tract urothelial cancer. J Clin Oncol 2016. [DOI: 10.1200/jco.2016.34.15_suppl.e16139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Yi-Huei Chang
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Guang-Heng Chen
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Po-Fan Hsieh
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Chi-Shun Lien
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Chi-Ping Huang
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Chin-Chung Yeh
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Wen-Chi Cheng
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Yu-Min Liao
- China Medical University Hospital, Taichung, Taiwan
| | - Che hung Lin
- Division of Hematology and Oncology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Ching Chan Lin
- Division of Hematology and Oncology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chao-Hsiang Chang
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Hsi-Chin Wu
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Su-Peng Yeh
- China Medical University Hospital, Taichung, Taiwan
| | - chi-Rei Yang
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
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Lien CS, Huang CP, Chung CJ, Lin CL, Chang CH. Increased risk of anxiety among patients with urolithiasis: A nationwide population-based cohort study. Int J Urol 2015. [PMID: 26195070 DOI: 10.1111/iju.12865] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To investigate whether patients with urolithiasis are at an increased risk of anxiety and depression. METHODS We used universal insurance claims data in Taiwan from 2000 to 2011 to identify patients with newly diagnosed urolithiasis (n = 32 617) and those without urolithiasis (n = 130 465). Incidences, hazard ratios, and incidence rate ratios of anxiety and depression were determined in both cohorts in terms of baseline demographic characteristics and comorbidities until December 2011. RESULTS The urolithiasis cohort yielded a higher incidence of anxiety (11.9 vs 6.91 per 1000 person-years) with an adjusted hazard ratio of 1.5 (95% confidence interval 1.42-1.57) than the non-urolithiasis cohort. The urolithiasis cohort also showed a higher incidence of depression (5.79 vs 3.95 per 1000 person-years) with an adjusted hazard ratio of 1.26 (95% confidence interval 1.18-1.35) than the non-urolithiasis cohort. Regardless of the patients' baseline comorbidities, patients with urolithiasis showed a higher incidence rate ratio of anxiety and depression than those without urolithiasis (with no comorbidities: adjusted hazard ratio 1.62, 95% confidence interval 1.49-1.76] for anxiety and adjusted hazard ratio 1.37, 95% confidence interval 1.23-1.54 for depression). CONCLUSION Urolithiasis is recurrent, and significantly associated with anxiety and depression. Therefore, urologists should diagnose patients suspected with this disease and provide proper medical care.
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Affiliation(s)
- Chi-Shun Lien
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Chi-Ping Huang
- Department of Urology, China Medical University Hospital, Taichung, Taiwan
| | - Chi-Jung Chung
- Department of Health Risk Management, College of Public Health, China Medical University, Taichung, Taiwan.,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Cheng-Li Lin
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan.,College of Medicine, China Medical University, Taichung, Taiwan
| | - Chao-Hsiang Chang
- Department of Urology, China Medical University Hospital, Taichung, Taiwan.,College of Medicine, China Medical University, Taichung, Taiwan
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Chang WS, Tsai CW, Ji HX, Wu HC, Chang YT, Lien CS, Liao WL, Shen WC, Tsai CH, Bau DT. Associations of cyclooxygenase 2 polymorphic genotypes with bladder cancer risk in Taiwan. Anticancer Res 2013; 33:5401-5405. [PMID: 24324075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM Bladder cancer is the sixth most common cancer worldwide and its incidence is particularly high in southwestern Taiwan. However, the genetic contribution to its etiology is not well-understood. The aim of this study is to evaluate the association of cyclooxygenase 2 (Cox-2) polymorphic genotypes with Taiwan bladder cancer patients. MATERIALS AND METHODS Six polymorphic variants of Cox-2 were analyzed regarding their association with bladder cancer risk, and three hundred and seventy-five patients with bladder cancer and same amount of age- and gender-matched healthy controls recruited were genotyped by the PCR-RFLP method. RESULTS Among the six polymorphic sites examined, only the Cox-2 promoter G-765C (rs20417) genotypes were positively associated with bladder cancer risk (p=0.0102). Individuals with the Cox-2 -765GC genotypes were associated with higher prostate cancer risk than those with -765GG. CONCLUSION Our findings provide evidence that the C allele of Cox-2 promoter G-765C may be associated with the overexpression of COX-2 during bladder cancer development and may be a useful marker for the early detection of bladder cancer.
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Affiliation(s)
- Wen-Shin Chang
- Terry Fox Cancer Research Lab, China Medical University Hospital, 2 Yuh-Der Road, Taichung, 404 Taiwan, ;
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Chang WS, Lin SS, Li FJ, Tsai CW, Li LY, Lien CS, Liao WL, Wu HC, Tsai CH, Shih TC, Bau DT. Significant association of caveolin-1 (CAV1) genotypes with upper urothelial tract cancer. Anticancer Res 2013; 33:4907-4912. [PMID: 24222128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM Upper urothelial tract cancer is unusually of high incidence in Taiwan and it is valuable to study the specificity of this disease in Taiwan and compare the corresponding findings with those of Western countries. In the literature, it has been reported that single nucleotide variation of caveolin-1 gene (CAV1) plays an important role in risk of several types of cancer, such as hepatoma, leukemia, nasopharyngeal carcinoma, oral, breast, bladder and prostate cancer, but we are not aware of any reports on upper urothelial tract cancer. The aim of this study was to evaluate the association of six polymorphic genotypes of CAV1 with upper urothelial tract cancer within a Taiwanese population. MATERIALS AND METHODS A total of 218 patients with upper urothelial tract cancer and 580 healthy controls in central Taiwan were genotyped by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) for six CAV1 polymorphic genotypes, C521A (rs1997623), G14713A (rs3807987), G21985A (rs12672038), T28608A (rs3757733), T29107A (rs7804372), and G32124A (rs3807992), and their association with upper urothelial tract cancer susceptibility was examined. RESULTS The distribution of genotypes of CAV1 rs3807987 and rs7804372 were significantly different between cancer patient and control groups (p=0.0188 and 0.0090, respectively), while those for CAV1 rs1997623, rs12672038, rs3757733 and rs3807992 were not significant (p>0.05). The haplotype analysis of the two polymorphic genotypes showed that compared with the GG/AT, and GG/AA haplotypes of CAV1 rs3807987/rs7804372, those carrying GG/TT, AG/TT and AA/TT variants have a significantly increased risk of upper urothelial tract cancer (odds ratio=1.61, 1.50 and 2.67, 95% confidence interval=1.05-2.47, 1.18-1.90, and 1.37-5.18, respectively). On the contrary, other haplotype variants conferred non-significant elevated risk. CONCLUSION Our results suggest that individual and combined CAV1 rs3807987/rs7804372 genotypes are involved in predisposition to upper urothelial tract cancer in the Taiwanese population.
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Affiliation(s)
- Wen-Shin Chang
- Terry Fox Cancer Research Laboratory, China Medical University Hospital, 2 Yuh-Der Road, Taichung, 404 Taiwan, R.O.C. ;
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Lien CS, Chang CH, Wu HC, Chen WC. Genital chlamydial infection in Taiwan. Urological Science 2013. [DOI: 10.1016/j.urols.2013.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Hsieh PF, Chang CH, Lien CS, Wu HC, Hsiao PJ, Chou ECL. Remote monitoring of videourodynamics using smart phone and free instant messaging software. Neurourol Urodyn 2013; 32:1064-7. [PMID: 23450801 DOI: 10.1002/nau.22387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 01/23/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Po-Fan Hsieh
- Department of Urology; China Medical University Hospital; Taichung Taiwan
| | - Chao-Hsiang Chang
- Department of Urology; China Medical University Hospital; Taichung Taiwan
- School of Medicine; China Medical University; Taichung Taiwan
| | - Chi-Shun Lien
- Department of Urology; China Medical University Hospital; Taichung Taiwan
| | - Hsi-Chin Wu
- Department of Urology; China Medical University Hospital; Taichung Taiwan
- School of Medicine; China Medical University; Taichung Taiwan
| | - Po-Jen Hsiao
- Department of Urology; China Medical University Hospital; Taichung Taiwan
| | - Eric Chieh-Lung Chou
- Department of Urology; China Medical University Hospital; Taichung Taiwan
- School of Medicine; China Medical University; Taichung Taiwan
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Chang WS, Ke HL, Tsai CW, Lien CS, Liao WL, Lin HH, Lee MH, Wu HC, Chang CH, Chen CC, Lee HZ, Bau DT. The role of XRCC6 T-991C functional polymorphism in renal cell carcinoma. Anticancer Res 2012; 32:3855-3860. [PMID: 22993329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND The DNA non-homologous end-joining repair gene XRCC6 (Ku70) plays a key role in both the DNA double-strand break (DSB) repair and cell cycle arrest. Defects in DSB repair capacity can lead to genomic instability. We hypothesized that a variant in the XRCC6 gene was associated with susceptibility to renal cell carcinoma (RCC). MATERIALS AND METHODS In a hospital-based case-control study of 92 patients with RCC and 580 cancer-free controls, the frequency matched by age and sex, the associations of XRCC6 promoter T-991C (rs5751129), promoter G-57C (rs2267437), promoter A-31G (rs132770), and intron 3 (rs132774) polymorphisms with RCC risk were investigated in a Taiwanese population. At the same time, 30 adjacent renal tissue samples were tested to estimate the XRCC6 mRNA expression by real-time quantitative reverse transcription. RESULTS Compared with the TT genotype, the TC genotype had a significantly increased risk of RCC [adjusted odds ratio=2.24, 95% confidence interval=1.25-4.08, p=0.0175]. The in vivo mRNA expression in renal tissues revealed a statistically significant lower XRCC6 mRNA expression in samples with TC/CC genotypes compared to those with the TT genotype (p=0.0039). CONCLUSION These evidence suggests that the XRCC6 T-991C genotype together with its mRNA expression are involved in the etiology of RCC and may be a marker for susceptibility to RCC in the population of Taiwan.
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Affiliation(s)
- Wen-Shin Chang
- Graduate Institutes of Clinical Medical Science, China Medical University, Taichung, Taiwan, ROC.
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Hsia TC, Liu CJ, Chu CC, Hang LW, Chang WS, Tsai CW, Wu CI, Lien CS, Liao WL, Ho CY, Bau DT. Association of DNA double-strand break gene XRCC6 genotypes and lung cancer in Taiwan. Anticancer Res 2012; 32:1015-1020. [PMID: 22399625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
AIM The DNA repair gene X-ray repair complementing defective repair in Chinese hamster cells 6 (XRCC6) is thought to play an important role in the repair of DNA double-strand breaks. It is known that defects in double-strand break repair capacity can lead to irreversible genomic instability. However, the association of polymorphic variants of XRCC6 with lung cancer susceptibility has never been reported. In this hospital-based case-control study, the association of XRCC6 promoter T-991C (rs5751129), promoter G-57C (rs2267437), promoter G-31A (rs132770), and intron 3 (rs132774) polymorphisms with lung cancer risk in a Taiwanese population, was studied. MATERIALS AND METHODS In total, 358 patients with lung cancer and 716 healthy controls recruited from the China Medical Hospital in Taiwan were genotyped. RESULTS The results showed that there were significant differences between lung cancer and control groups in the distribution of their genotypic (p=3.7×10(-4)) and allelic frequency (p=2.7×10(-5)) in the XRCC6 promoter T-991C polymorphism. Individuals who carried at least one C allele (TC or CC) had a 2.03-fold increased odds ratio of developing lung cancer compared to those who carried the wild-type TT genotype (95% conference internal=1.42-2.91, p=0.0001). For the other three polymorphisms, there was no difference between the case and control groups in the distribution of either genotypic or allelic frequency. CONCLUSION In conclusion, the XRCC6 promoter T-991C, but not the promoter C-57G, promoter G-31A or intron 3, is associated with lung cancer susceptibility.
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Affiliation(s)
- Te-Chun Hsia
- Terry Fox Cancer Research Laboratory, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan, R.O.C
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Liu JC, Lien CS. Pretreatment of bakery wastewater by coagulation-flocculation and dissolved air flotation. Water Sci Technol 2001; 43:131-137. [PMID: 11394265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The pretreatment of wastewater from a large-scale bakery was studied. In the coagulation-flocculation reaction, it was found that both alum and FeCl3 were effective in the jar tests. When at coagulant dosage of 90 to 100 mg/l, 55% of COD and 95 to 100% of SS could be removed. The optimum pH was at 6.0. In addition, the removal of SS was affected by pH more significantly, while the removal of COD was not affected in the pH range of 6.0 to 8.0. In the DAF experiments, 48.6% of COD and 69.8% of SS were removed in 10 min at a pressure of 4 kg/cm2, recycle ratio of 0.3 l/min, and pH of 6.0. Upon the addition of 100 mg/l of alum, the removal efficiency of COD did not increase while SS removal increased to 82.1%. It was found that 5-min flocculation time did improve the COD removal while it had little effect on SS removal. Flocculation for longer than 5 min did not enhance the flotation performance. Similar phenomena were observed when FeCl3 was used as the coagulant, except that flocculation had an insignificant effect on COD and SS removal. It was also found that FeCl3 was relatively more effective than alum. In summary, both coagulation-flocculation and DAF were efficient for the pretreatment. The advantages and disadvantages were discussed.
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Affiliation(s)
- J C Liu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 106, Chinese Taiwan
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