1
|
Zhang Z, Xi Y, Liu DF, Mao JM, Zhang HT, Lin HC, Tang WH, Jiang H, Hong K, Zhao LM. Sperm retrieval outcomes of contralateral testis in men with nonobstructive azoospermia and unsuccessful unilateral microdissection testicular sperm extraction. Fertil Steril 2024; 121:540-542. [PMID: 38036241 DOI: 10.1016/j.fertnstert.2023.11.023] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 11/10/2023] [Accepted: 11/21/2023] [Indexed: 12/02/2023]
Affiliation(s)
- Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing, People's Republic of China; Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China
| | - Yu Xi
- Department of Urology, Peking University Third Hospital, Beijing, People's Republic of China; Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China
| | - De-Feng Liu
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China
| | - Jia-Ming Mao
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China
| | - Hai-Tao Zhang
- Department of Urology, Peking University Third Hospital, Beijing, People's Republic of China; Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing, People's Republic of China; Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China
| | - Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing, People's Republic of China; Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China
| | - Hui Jiang
- Department of Urology, Peking University First Hospital, Beijing, People's Republic of China; Institute of Urology, Peking University, Beijing, People's Republic of China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing, People's Republic of China; Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing, People's Republic of China; Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, People's Republic of China.
| |
Collapse
|
2
|
Liu DF, Wu H, Zhang Z, Hong K, Lin HC, Mao JM, Xu HY, Zhao LM, Jiang H. Factors influencing the sperm retrieval rate of microdissection testicular sperm extraction in patients with nonmosaic Klinefelter syndrome. Asian J Androl 2023; 25:704-707. [PMID: 37005982 DOI: 10.4103/aja2022124] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 02/09/2023] [Indexed: 04/03/2023] Open
Abstract
To investigate the factors affecting the sperm retrieval rate of microdissection testicular sperm extraction (micro-TESE) in patients with nonmosaic Klinefelter syndrome (KS), 64 patients with nonmosaic KS who underwent micro-TESE in the Center for Reproductive Medicine of Peking University Third Hospital (Beijing, China) between January 2016 and December 2017 were included in the study. Data on medical history, physical examination and laboratory examination results, and micro-TESE outcomes were collected. Patients were divided into two groups according to micro-TESE outcomes. The following factors were compared between the two groups by the Mann‒Whitney U test or Student's t-test based on the distribution (nonnormal or normal) of the factors: age, testicular size, follicle-stimulating hormone level, luteinizing hormone level, testosterone level, and anti-Müllerian hormone level. The overall success rate of sperm retrieval was 50.0%. Correlation analysis showed that testicular volume was positively correlated with testosterone level. Using a logistic regression model, age and anti-Müllerian hormone levels were found to be better predictors for the sperm retrieval rate than the other parameters.
Collapse
Affiliation(s)
- De-Feng Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Han Wu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Jia-Ming Mao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Hui-Yu Xu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
3
|
Zhao QC, Zhang Z, Zhao LM, Deng ZF, Gao JM, Zhang HL, Lin HC, Liu DF, Mao JM, Zhang HT, Chen YL, Tang WH, Jiang H. A retrospective cohort study of geographic differences in the semen of 1,012 sperm donors in China. Transl Androl Urol 2023; 12:187-196. [PMID: 36915889 PMCID: PMC10006001 DOI: 10.21037/tau-22-578] [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: 08/09/2022] [Accepted: 12/02/2022] [Indexed: 02/09/2023] Open
Abstract
Background Male reproductive health has become a serious public health concern, and semen quality is essential to male reproduction. We aimed to investigate geographical differences in the semen quality of sperm donors from northern and southern China by enrolling donors across the country. Methods A total of 1,012 sperm donors were enrolled in this study between 2015 and 2019. Donors were first divided into two parts based on their birthplace according to the "Qinling-Huaihe" line, and secondly, by their residential latitude. Finally, donors were re-classified into two groups (typically north and south) which contained 667 samples. Results Statistically significant differences in sperm concentration were observed among men from different latitudes in China (P=0.04). The sperm concentrations of males from 18° to 27° north latitude were significantly lower than those from 36° to 45° and 45° to 54° [median 131, 134, and 146, respectively, P=0.021 (18° to 27° vs. 36° to 45°) and P=0.01 (18° to 27° vs. 45° to 54°)]. Conclusion We hypothesize environmental pollution and mental stress due to the increased population size may be the main factors underlying differences in the sperm quality of men in northern and southern China.
Collapse
Affiliation(s)
- Qian-Cheng Zhao
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing, China
| | - Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Zhen-Feng Deng
- Department of Natural Medicine, Peking University School of Pharmaceutical Sciences, Beijing, China
| | - Jiang-Man Gao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Hong-Liang Zhang
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - De-Feng Liu
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Jia-Ming Mao
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Hai-Tao Zhang
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Yu-Long Chen
- Department of Urban and Rural Planning, Peking University, Beijing, China
| | - Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing, China
| |
Collapse
|
4
|
Zhang Z, Yang YZ, Zhang HT, Xi Y, Wang CT, Liu DF, Mao JM, Lin HC, Tang WH, Zhao LM, Zhang XS, Dai YT, Jiang H. Psychological status of infertile men during the Coronavirus Disease 2019 Pandemic in China: a cross-sectional investigation. Basic Clin Androl 2023; 33:8. [PMID: 36792987 PMCID: PMC9931448 DOI: 10.1186/s12610-022-00177-5] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 11/24/2022] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND The coronavirus disease 2019 (COVID-19) outbreak has had a widespread and profound impact on people's mental health. The factors associated with mental symptoms among men diagnosed with infertility, a disease closely related to psychological conditions, remain unclear. The aim of this study is to investigate the risk factors associated with mental symptoms among infertile Chinese men during the pandemic. RESULTS A total of 4,098 eligible participants were recruited in this cross-sectional, nationwide study, including 2,034 (49.6%) with primary infertility and 2,064 (50.4%) with secondary infertility. The prevalence of mental health conditions was 36.3%, 39.6%, and 6.7% for anxiety, depression, and post-pandemic stress, respectively. Sexual dysfunction is associated with a higher risk with adjusted odds ratios (ORs) of 1.40 for anxiety, 1.38 for depression, and 2.32 for stress. Men receiving infertility drug therapy displayed a higher risk for anxiety (adjusted OR, 1.31) and depression (adjusted OR, 1.28) symptoms, while those receiving intrauterine insemination had a lower risk of anxiety (adjusted OR, 0.56) and depression (adjusted OR, 0.55) symptoms. CONCLUSION The COVID-19 pandemic has had a significant psychological impact on infertile men. Several psychologically vulnerable populations were identified, including individuals with sexual dysfunction, respondents receiving infertility drug therapy, and those experiencing control measures for COVID-19. The findings provide a comprehensive profile of the mental health status of infertile Chinese men during the COVID-19 outbreak and provide potential psychological intervention strategies.
Collapse
Affiliation(s)
- Zhe Zhang
- grid.411642.40000 0004 0605 3760Department of Urology, Peking University Third Hospital, Beijing, China ,grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Yu-Zhuo Yang
- grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Hai-Tao Zhang
- grid.411642.40000 0004 0605 3760Department of Urology, Peking University Third Hospital, Beijing, China ,grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Yu Xi
- grid.411642.40000 0004 0605 3760Department of Urology, Peking University Third Hospital, Beijing, China ,grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Cun-Tong Wang
- grid.411054.50000 0000 9894 8211School of Social Development, Central University of Finance and Economics, Beijing, China
| | - De-Feng Liu
- grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Jia-Ming Mao
- grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Hao-Cheng Lin
- grid.411642.40000 0004 0605 3760Department of Urology, Peking University Third Hospital, Beijing, China ,grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Wen-Hao Tang
- grid.411642.40000 0004 0605 3760Department of Urology, Peking University Third Hospital, Beijing, China ,grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Lian-Ming Zhao
- grid.411642.40000 0004 0605 3760Department of Urology, Peking University Third Hospital, Beijing, China ,grid.411642.40000 0004 0605 3760Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China
| | - Xian-Sheng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
| | - Yu-Tian Dai
- Department of Andrology, Nanjing Drum Tower Hospital, Nanjing, China.
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing, China. .,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing, China.
| |
Collapse
|
5
|
Deng CY, Liu DF, Zhao LM, Lin HC, Mao JM, Zhang Z, Yang YZ, Zhang HT, Hong K, Xu HY, Jiang H. Development of a predictive model for increasing sperm retrieval success by microdissection testicular sperm extraction in patients with nonobstructive azoospermia. Asian J Androl 2023; 25:369254. [PMID: 36814170 PMCID: PMC10521962 DOI: 10.4103/aja2022111] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 09/20/2022] [Accepted: 12/15/2022] [Indexed: 02/11/2023] Open
Abstract
Microdissection testicular sperm extraction (micro-TESE) is widely used to treat nonobstructive azoospermia. However, a good prediction model is required to anticipate a successful sperm retrieval rate before performing micro-TESE. This retrospective study analyzed the clinical records of 200 nonobstructive azoospermia patients between January 2021 and December 2021. The backward method was used to perform binary logistic regression analysis and identify factors that predicted a successful micro-TESE sperm retrieval. The prediction model was constructed using acquired regression coefficients, and its predictive performance was assessed using the receiver operating characteristic curve. In all, 67 patients (sperm retrieval rate: 33.5%) underwent successful micro-TESE. Follicle-stimulating hormone, anti-Müllerian hormone, and inhibin B levels varied significantly between patients who underwent successful and unsuccessful micro-TESE. Binary logistic regression analysis yielded the following six predictors: anti-Müllerian hormone (odds ratio [OR] = 0.902, 95% confidence interval [CI]: 0.821-0.990), inhibin B (OR = 1.012, 95% CI: 1.001-1.024), Klinefelter's syndrome (OR = 0.022, 95% CI: 0.002-0.243), Y chromosome microdeletion (OR = 0.050, 95% CI: 0.005-0.504), cryptorchidism with orchiopexy (OR = 0.085, 95% CI: 0.008-0.929), and idiopathic nonobstructive azoospermia (OR = 0.031, 95% CI: 0.003-0.277). The prediction model had an area under the curve of 0.720 (95% CI: 0.645-0.794), sensitivity of 65.7%, specificity of 72.2%, Youden index of 0.379, and cut-off value of 0.305 overall, indicating good predictive value and accuracy. This model can assist clinicians and nonobstructive azoospermia patients in decision-making and avoiding negative micro-TESE results.
Collapse
Affiliation(s)
- Chen-Yao Deng
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - De-Feng Liu
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Jia-Ming Mao
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Yu-Zhuo Yang
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Hai-Tao Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Hui-Yu Xu
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
6
|
Zhang Z, Wu H, Zheng L, Zhang HT, Yang YZ, Mao JM, Liu DF, Zhao LM, Liang H, Jiang H. Identification and characterization of circular RNAs in the testicular tissue of patients with non-obstructive azoospermia. Asian J Androl 2022; 24:660-665. [PMID: 35229760 PMCID: PMC9809480 DOI: 10.4103/aja2021131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Circular RNAs (circRNAs) are highly conserved and ubiquitously expressed noncoding RNAs that participate in multiple reproduction-related diseases. However, the expression pattern and potential functions of circRNAs in the testes of patients with non-obstructive azoospermia (NOA) remain elusive. In this study, according to a circRNA array, a total of 37 881 circRNAs were identified that were differentially expressed in the testes of NOA patients compared with normal controls, including 19 874 upregulated circRNAs and 18 007 downregulated circRNAs. Using quantitative real-time polymerase chain reaction (qRT-PCR) analysis, we confirmed that the change tendency of some specific circRNAs, including hsa_circ_0137890, hsa_circ_0136298, and hsa_circ_0007273, was consistent with the microarray data in another larger sample. The structures and characteristics of these circRNAs were confirmed by Sanger sequencing, and fluorescence in situ hybridization revealed that these circRNAs were primarily expressed in the cytoplasm. Bioinformatics analysis was used to construct the competing endogenous RNA (ceRNA) network, and numerous miRNAs that could be paired with circRNAs validated in this study were reported to be vital for spermatogenesis regulation. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses indicated that genes involved in axoneme assembly, microtubule-based processes, and cell proliferation were significantly enriched. Our data suggest that there are aberrantly expressed circRNA profiles in patients with NOA and that these circRNAs may help identify key diagnostic and therapeutic molecular biomarkers for NOA patients.
Collapse
Affiliation(s)
- Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China,Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Han Wu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China,Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Lin Zheng
- Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Hai-Tao Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China,Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Yu-Zhuo Yang
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Jia-Ming Mao
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - De-Feng Liu
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China,Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Hui Liang
- Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China,
Correspondence: Dr. H Jiang () or Dr. H Liang ()
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China,Department of Andrology, Peking University Third Hospital, Beijing 100191, China,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China,
Correspondence: Dr. H Jiang () or Dr. H Liang ()
| |
Collapse
|
7
|
Zhang L, Mao JM, Li M, Lian Y, Lin SL, Chen LX, Yan LY, Qiao J, Liu P. Poor intracytoplasmic sperm injection outcome in infertile males with azoospermia factor c microdeletions. Fertil Steril 2021; 116:96-104. [PMID: 33745721 DOI: 10.1016/j.fertnstert.2021.01.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 09/05/2020] [Revised: 01/15/2021] [Accepted: 01/19/2021] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To explore whether the presence of azoospermia factor c (AZFc) microdeletions adversely affects intracytoplasmic sperm injection (ICSI) outcome. DESIGN Retrospective cohort. SETTING University hospital. PATIENT(S) A total of 293 patients with azoospermia or severe oligozoospermia AZFc deletions underwent 345 ICSI cycles, and 363 idiopathic patients with normal Y chromosome underwent 462 ICSI cycles. INTERVENTION(S) Testicular sperm aspiration, microdissection testicular sperm extraction. MAIN OUTCOME MEASURE(S) The main clinical outcome parameters were cumulative clinical pregnancy rate, cumulative live birth delivery rate, and no embryo suitable for transfer cycle rate. RESULT(S) Compared with the control group, the AZFc deletion group exhibited poorer ICSI outcome, with significant differences between the 2 groups for cumulative clinical pregnancy rate (45.39% vs. 67.49%; odds ratio [OR], 2.843; 95% confidence interval [CI]), cumulative live birth delivery rate (35.15% vs. 53.44%; OR, 2.234; 95% CI), no embryo suitable for transfer cycle rate (15.07% vs. 8.23%; OR, 0.565; 95% CI), fertilization rate (46.80% vs. 53.37%; adjusted β, -0.074; 95% CI), implantation rate (28.63% vs. 31.26%; adjusted β, -0.075; 95% CI) separately. The poor ICSI outcome of the AZFc deletion group was related to AZFc microdeletions by linear and logistic regression analyses. CONCLUSION(S) AZFc microdeletions adversely affect ICSI outcome; patients with AZFc deletion should be informed that they have reduced opportunities to be biological fathers.
Collapse
Affiliation(s)
- Li Zhang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China
| | - Jia-Ming Mao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China
| | - Ming Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China
| | - Ying Lian
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China
| | - Sheng-Li Lin
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China
| | - Li-Xue Chen
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China
| | - Li-Ying Yan
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China.
| | - Jie Qiao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China; Beijing Advanced Innovation Center for Genomics, Beijing 100871, People's Republic of China; Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, People's Republic of China
| | - Ping Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, People's Republic of China; National Clinical Research Center for Obstetrics and Gynecology, Beijing, People's Republic of China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, People's Republic of China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, People's Republic of China
| |
Collapse
|
8
|
Zhang HL, Zhao LM, Mao JM, Liu DF, Tang WH, Lin HC, Zhang L, Lian Y, Hong K, Jiang H. Sperm retrieval rates and clinical outcomes for patients with different causes of azoospermia who undergo microdissection testicular sperm extraction-intracytoplasmic sperm injection. Asian J Androl 2021; 23:59-63. [PMID: 32341210 PMCID: PMC7831829 DOI: 10.4103/aja.aja_12_20] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The aim of our study was to compare the sperm retrieval rates (SRRs) and clinical outcomes of patients with different causes of azoospermia who underwent microdissection testicular sperm extraction-intracytoplasmic sperm injection (micro-TESE-ICSI). We conducted a retrospective study at the Reproductive Medicine Center of Peking University Third Hospital in Beijing, China, from January 2014 to December 2017. This study examined 769 patients with nonobstructive azoospermia who underwent 347 cycles of micro-TESE-ICSI. Patients with azoospermia were classified into Group A (Klinefelter syndrome, n = 284, 125 cycles), Group B (azoospermia Y chromosome factor c [AZFc] microdeletion, n = 91, 64 cycles), Group C (cryptorchidism, n = 52, 39 cycles), Group D (previous mumps and bilateral orchitis, n = 23, 23 cycles), and Group E (idiopathic azoospermia, n = 319, 96 cycles). Clinical characteristics, SRR, embryonic development, and pregnancy outcomes of the patients were compared between all groups. Patients in Group D had the highest and most successful SRR. The average SRR for all patients was 46.0%. The rates of clinical pregnancy, implantation, and live birth in Group D were 78.3%, 65.0%, and 74.0%, respectively, which were higher than those in all other groups (P < 0.05). Group B patients had the lowest clinical pregnancy, implantation, and live birth rates of all groups (P < 0.05). No differences were found in the miscarriage rate or birth defects among the groups (P > 0.05). Patients with orchitis had the highest SRR and best clinical outcomes. Although AZFc microdeletion patients had a higher SRR, their clinical outcomes were worse.
Collapse
Affiliation(s)
- Hong-Liang Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Jia-Ming Mao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - De-Feng Liu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Li Zhang
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Ying Lian
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
9
|
Zhang HL, Mao JM, Liu DF, Zhao LM, Tang WH, Hong K, Zhang L, Lian Y, Lin HC, Jiang H. Clinical outcomes of microdissection testicular sperm extraction-intracytoplasmic sperm injection with fresh or cryopreserved sperm in patients with nonobstructive azoospermia. Asian J Androl 2021; 23:211-214. [PMID: 32719193 PMCID: PMC7991819 DOI: 10.4103/aja.aja_38_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We performed this study to evaluate the clinical outcomes of microdissection testicular sperm extraction-intracytoplasmic sperm injection (micro-TESE-ICSI) treatment that used fresh or cryopreserved sperm in patients with nonobstructive azoospermia (NOA). A total of 338 NOA patients with 344 consecutive cycles received treatment in the reproductive medicine center of Peking University Third Hospital in Beijing, China, from January 2014 to December 2017. Fresh oocytes and fresh sperm were used in 222 patients with 234 cycles (Group A). Fresh oocytes and cryopreserved sperm were used in 116 patients with 110 cycles (Group B). We compared patient characteristics, embryonic development, and pregnancy outcomes between Groups A and B. There was no statistical difference in the patient characteristics, and no differences were observed with fertilization or quality embryo rates between Groups A and B. The rates of clinical pregnancy and live birth were both higher for Group A than those for Group B (both P < 0.05). In conclusion, fresh testicular sperm appears to produce better ICSI outcomes than cryopreserved testicular sperm in patients with NOA.
Collapse
Affiliation(s)
- Hong-Liang Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Jia-Ming Mao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - De-Feng Liu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Li Zhang
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Ying Lian
- Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
10
|
Zhang HT, Zhang Z, Hong K, Tang WH, Liu DF, Mao JM, Yang YZ, Lin HC, Jiang H. Altered microRNA profiles of testicular biopsies from patients with nonobstructive azoospermia. Asian J Androl 2020; 22:100-105. [PMID: 31134916 PMCID: PMC6958976 DOI: 10.4103/aja.aja_35_19] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Many studies have shown that microRNAs (miRNAs) play vital roles during the spermatogenesis. However, little is known about the altered miRNA profiles of testicular tissues in nonobstructive azoospermia (NOA). Using microarray technology, the miRNA expression profiles of testicular biopsies from patients with NOA and of normal testicular tissues were determined. Bioinformatics analyses were conducted to predict the enriched biological processes and functions of identified miRNAs. The microarray data were validated by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR), the results of which were then validated with a larger sample size. Correlations between the miRNA expression levels and clinical characteristics were analyzed. Receiver operating characteristic (ROC) curve analysis was used to evaluate the diagnostic ability of miRNAs for azoospermia. Hierarchical clustering showed that 129 miRNAs were significantly differentially expressed between the NOA and control groups. Bioinformatics analysis indicated that the differentially expressed miRNAs were involved in spermatogenesis, cell cycle, and mitotic prometaphase. In the subsequent qRT-PCR assays, the selected miRNA expression levels were consistent with the microarray results, and similar validated results were obtained with a larger sample size. Some clinical characteristics were significantly associated with the expression of certain miRNAs. In particular, we identified a combination of two miRNAs (miR-10b-3p and miR-34b-5p) that could serve as a predictive biomarker of azoospermia. This study provides altered miRNA profiles of testicular biopsies from NOA patients and examines the roles of miRNAs in spermatogenesis. These profiles may be useful for predicting and diagnosing the presence of testicular sperm in individuals with azoospermia.
Collapse
Affiliation(s)
- Hai-Tao Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| | - De-Feng Liu
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Jia-Ming Mao
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Yu-Zhuo Yang
- Department of Andrology, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China.,Department of Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.,Department of Andrology, Peking University Third Hospital, Beijing 100191, China.,Department of Human Sperm Bank, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
11
|
Zhao LM, Jiang H, Hong K, Lin HC, Tang WH, Liu DF, Mao JM, Zhang Z, Lin SL, Ma LL. [Analysis of intratesticular condition in micro-dissection testicular sperm extraction era]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:632-635. [PMID: 31420613 DOI: 10.19723/j.issn.1671-167x.2019.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To summarizes the intratesticular condition of azoospermia patients, to understand azoospermia more intuitively, and improve the ability of clinical doctors to predict the success rate of microsperm extraction in azoospermia patients. METHODS Azoospermia patients (excluding Klinefelter's syndrome) who underwent a micro-TESE during January 2014 and January 2018 in a single center were enrolled. The types of seminiferous tubules were summarized, and the clinical characteristics of different types of seminiferous tubules compared with the success rates of sperm extraction. In this study, 472 cases of non-obstructive azoospermia (excluding Klinefelter's syndrome) were analyzed by SPSS 21.0 software package. Relevant data were expressed by median(minimum,maximum).t-test was used to compare the difference of success rate of sperm extraction between each group and the group with the lowest rate (a type). RESULTS The 472 patients with non-obstructive azoospermia underwent micro-TESE. The mean age of the patients was 31 (23, 46) years, the mean testicular size was 10 (1, 20) mL, the mean FSH was 15.4 (1.21, 68.4) IU/L, the mean T was 8.34 (0.69, 30.2) nmol/L, and totally 202 patients achieved success in micro-TESE (42.7%, 202/472). According to the seminiferous tubules seen during the operation, they were divided into the following six types: Class a, seminiferous tubules developed well and uniformly; Class b, seminiferous tubules developed well, occasionally slightly thick; Class c, seminiferous tubules were generally thin; Class d, seminiferous tubules basically atrophied, occasionally well-developed seminiferous tubules; Class e, all seminiferous tubules atrophied; Class f, seminiferous tubules were infiltrated by yellow substances. The success rate of micro-TESE varied greatly among different types of the patients. A total of 78 patients with type a were 29 (24, 40) years old, FSH 11.1 (1.21, 15.8) IU/L, T 10.2 (3.29, 26.5) nmol/L), and testicular size 12 (12, 20) mL. The successful rate of sperm extraction was 6.41%; 82 patients with type b were 31 (23, 42) years old, FSH 13.8 (3.23, 19.6) IU/L, T 9.44 (3.58, 30.2) nmol/L), and testicular size 12(8,15) mL. The successful rate of sperm extraction was 74.39%; There were 162 patients in group c, aged 31 (25, 40), FSH 19.6 (9.28, 26.6) IU/L, T 8.75 (5.66, 18.6) nmol/L, and testicular size 8 (5, 12) mL. The successful rate of sperm extraction was 45.06%. There were 36 patients in group d, aged 25 (23,38) years and FSH 28.5 (19.3, 45.6) IU/L, T 6.52 (2.12, 9.83) nmol/L, and testicular size 5 (3, 8) mL, and the success rate of sperm extraction was 94.44%. 26 patients with type e were 28(23, 46) years old, FSH 31.3 (18.5, 68.4) IU/L, T 6.72 (0.69, 18.2) nmol/L, and testicular size 5 (1, 8) mL. The success rate of sperm extraction was 45.38%. 88 patients with type f were 29 (24, 38) years old, FSH 18.5 (5.23, 31.6) IU / L, T 8.32 (3.58, 16.5) nmol/L, and testicular size 12 (6, 20) mL. The success rate of sperm extraction was 28.41%. CONCLUSION The success rate of micro-TESE in different types of seminiferous tubules in testis can be helpful to the judgement of the surgeon during the operation.
Collapse
Affiliation(s)
- L M Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - K Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H C Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - W H Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - D F Liu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - J M Mao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Z Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - S L Lin
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
12
|
Liu DF, Zhao LM, Hong K, Mao JM, Yang YZ, Zhang Z, Jiang H. Fertility achieved through in vitro fertilization in a male patient with 48,XXYY syndrome. Asian J Androl 2019; 20:208-209. [PMID: 28980534 PMCID: PMC5858110 DOI: 10.4103/aja.aja_44_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- De-Feng Liu
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Jia-Ming Mao
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - Yu-Zhuo Yang
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
13
|
Mao JM, Liu DF, Zhao LM, Hong K, Zhang L, Ma LL, Jiang H, Qiao J. [Effect of testicular puncture biopsy on the success rate of microdissection testicular sperm extraction for idiopathic non-obstructive azoospermia]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:613-616. [PMID: 30122758] [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: 06/08/2023]
Abstract
OBJECTIVE To explore the predictive effect of testicular puncture biopsy and the biopsy results on the success rate of microdissection testicular sperm extraction (micro-TESE) in patients with idiopathic non-obstructive azoospermia. METHODS We retrospectively evaluated the micro-TESE performance in patients with idiopathic non-obstructive azoospermia (NOA) referred to the Reproductive Medicine Center of Peking University Third Hospital between January 2012 and August 2017. We discussed whether to take the testicular biopsy and testicular biopsy results, including the intraoperative microscopic examination and postoperative pathology findings, could predict the success rate of the late micro-TESE. RESULTS There were 237 patients who were diagnosed as idiopathic NOA and received micro-TESE involved in the study and the total sperm retrieve rate was 25.7%. In 103 patients without testicular biopsy and 134 patients with preoperative testicular biopsy, the sperm retrieve rate was 26.2% and 25.4%, respectively. And there was no significant difference between the two groups. The testicular volume and serum follicle stimulating hormone levels of the two groups were (4.3±1.4) mL vs.(8.5±2.4) mL and (36.1±5.2) IU/L vs.(26.1±3.5) IU/L, respectively. Compared to the patients with preoperative testicular biopsy, the group of patients without testicular biopsy had a much smaller test volume and higher serum follicle stimulating hormone and the difference between the two groups was statistically significant. For the patients who were found with a small amount of sperm in both intraoperative microscopic examination and postoperative pathological examination, the sperm retrieve rate was 100% (7/7). And for the patients who were only found with sperm in intraoperative microscopic examination or postoperative pathology examination, the sperm retrieve rate (SRR) was 47.2% (17/36). For the patients who could be not found with sperm in both intraoperative microscopic examination and postoperative pathological examination, the SRR was only 11% (10/91). The difference between the groups was statistically significant. CONCLUSION Idiopathic non-obstructive azoospermia patients with smaller testicular volume still have a chance to be found with sperm by micro-TESE. The testicular biopsy results, including intraoperative microscopic examination and postoperative pathological findings, have predictive effect on the SRR for late micro-TESE. The patient who could not be found with sperm in both intraoperative microscopic examination and postoperative pathological examination have a small chance of success in micro-TESE.
Collapse
Affiliation(s)
- J M Mao
- Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - D F Liu
- Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - L M Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - K Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - L Zhang
- Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - J Qiao
- Reproductive Medicine Center, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
14
|
Tang WH, Zhou SJ, Song SD, He HY, Wu H, Zhang Z, Yang YZ, Zhang HL, Mao JM, Liu DF, Zhao LM, Lin HC, Hong K, Ma LL, Zhuang XJ, Jiang H. A clinical trial on the consistency of bilateral testicular tissue histopathology and Johnsen score: single side or bilateral side biopsy? Oncotarget 2018; 9:23848-23859. [PMID: 29844857 PMCID: PMC5963628 DOI: 10.18632/oncotarget.24748] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 03/01/2018] [Indexed: 11/25/2022] Open
Abstract
To evaluate and compare left and right testicular tissue histopathology and Johnsen score, and to investigate the necessity for bilateral testicular biopsy. We recruited180 patients with non-obstructiveazoospermia (NOA) on testicular biopsy who had undergonetesticular sperm aspiration (TESA). Pathological sections of testicular tissue were diagnosed by specially-assigned doctors, who evaluated pathological findings, determined the Johnsen score and confirmed for the presence or absence of sperm. Sperm positive rates for left and right testicular histopathology were 55.0% and 51.7% respectively, and the proportion of Johnsen scores≥8 for left and right testes were 53.3% and 50.0%, respectively. Cohen kappa values revealed that the identification of sperm in bilateral testicular samples was not consistent and was related to random effects; Optimized cut-off value for bilateral testicular volume was 11ml (Johnsen score ≥8), and optimized cut-off values of E2 on left and right testes were 144.5pmol/L and 133.5 pmol/L (Johnsen score≤7). However, age, serum prolactin (PRL), follicle stimulating hormone (FSH), luteinizing hormone (LH) and total testosterone (TT) levels were not accurate predictors for the existence of testicular sperm. There was nostatistical significance between left and right testicular histopathology in terms of sperm positive rates or Johnsen score; the Johnsen score were caused entirely by random effects and a score from one side could not represent the other side. Therefore, we recommend that both testes need to undergo surgery when NOA patients undergo testicular biopsy or sperm retrieval.
Collapse
Affiliation(s)
- Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Shan-Jie Zhou
- Reproductive Medicine Centre, Peking University International Hospital, Beijing 102206, China
| | - Shi-De Song
- Department of Urology, Rizhao People's Hospital, Rizhao, Shandong 276826, China
| | - Hui-Ying He
- Department of Pathology, Peking University, Health Science Center, Beijing 100191, China
| | - Han Wu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Yu-Zhuo Yang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Hong-Liang Zhang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Jia-Ming Mao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - De-Feng Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Lu-Lin Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Xin-Jie Zhuang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
15
|
Tang WH, Zhuang XJ, Song SD, Wu H, Zhang Z, Yang YZ, Zhang HL, Mao JM, Liu DF, Zhao LM, Lin HC, Hong K, Ma LL, Qiao J, Qin W, Tang Y, Jiang H. Ran-binding protein M is associated with human spermatogenesis and oogenesis. Mol Med Rep 2017; 17:2257-2262. [PMID: 29207172 PMCID: PMC5783472 DOI: 10.3892/mmr.2017.8147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 10/06/2017] [Indexed: 12/02/2022] Open
Abstract
The aim of the present study was to explore the underlying mechanism and diagnostic potential of Ran-binding protein M (RanBPM) in human spermatogenesis and oogenesis. RanBPM expression in human testis and ovaries was analysed using polymerase chain reaction (PCR) and western blotting, and immunofluorescence was performed on testis and ovary tissue sections during different developmental stages of spermatogenesis and oogenesis using RanBPM antibodies. Interactions with a variety of functional proteins were also investigated. RanBPM mRNA and protein expression levels were determined by PCR and western blotting in the tissue sections. Results revealed that the mRNA expression levels were highest in the testis followed by the ovary. The RanBPM protein was predominantly localized in the nucleus of germ cells, and the expression levels were highest in pachytene spermatocytes and cells surrounding spermatids in testis tissue. In ovary cells, RanBPM was localized in the nucleus and cytoplasm. In conclusion, the results suggested that RanBPM may have multiple roles in the regulation of germ cell proliferation during human spermatogenesis and oogenesis. This research may provide a novel insight into the underlying molecular mechanism of RanBPM and may have implications for the clinical diagnosis and treatment of human infertility.
Collapse
Affiliation(s)
- Wen-Hao Tang
- 1Department of Urology, The Third Hospital of Peking University, Beijing 100191, P.R. China
| | - Xin-Jie Zhuang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Key Laboratory of Assisted Reproduction, Ministry of Education, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Shi-De Song
- Department of Urology, Rizhao People's Hospital, Rizhao, Shandong 276500, P.R. China
| | - Han Wu
- 1Department of Urology, The Third Hospital of Peking University, Beijing 100191, P.R. China
| | - Zhe Zhang
- 1Department of Urology, The Third Hospital of Peking University, Beijing 100191, P.R. China
| | - Yu-Zhuo Yang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Key Laboratory of Assisted Reproduction, Ministry of Education, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Hong-Liang Zhang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Key Laboratory of Assisted Reproduction, Ministry of Education, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Jia-Ming Mao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Key Laboratory of Assisted Reproduction, Ministry of Education, Peking University Third Hospital, Beijing 100191, P.R. China
| | - De-Feng Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Key Laboratory of Assisted Reproduction, Ministry of Education, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Lian-Ming Zhao
- 1Department of Urology, The Third Hospital of Peking University, Beijing 100191, P.R. China
| | - Hao-Cheng Lin
- 1Department of Urology, The Third Hospital of Peking University, Beijing 100191, P.R. China
| | - Kai Hong
- 1Department of Urology, The Third Hospital of Peking University, Beijing 100191, P.R. China
| | - Lu-Lin Ma
- 1Department of Urology, The Third Hospital of Peking University, Beijing 100191, P.R. China
| | - Jie Qiao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Key Laboratory of Assisted Reproduction, Ministry of Education, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Weibing Qin
- Key Laboratory of Male Reproduction and Genetics, National Health and Family Planning Commission, Family Planning Research Institute of Guangdong Province, Guangzhou, Guangdong 510600, P.R. China
| | - Yunge Tang
- Key Laboratory of Male Reproduction and Genetics, National Health and Family Planning Commission, Family Planning Research Institute of Guangdong Province, Guangzhou, Guangdong 510600, P.R. China
| | - Hui Jiang
- 1Department of Urology, The Third Hospital of Peking University, Beijing 100191, P.R. China
| |
Collapse
|
16
|
Mao JM, Zhao LM, Hong K, Tang WH, Liu DF, Lin HC, Wu H, Zhang HT, Zhang HL, Yang YZ, Wang YP, Lian Y, Jiang H, Ma LL, Qiao J. [Microdissection testicular sperm extraction for patients with nonmosaic Klinefelter syndrome: A report of 143 cases]. Zhonghua Nan Ke Xue 2017; 23:1075-1079. [PMID: 29738176] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the clinical application and outcomes of microdissection testicular sperm extraction (micro-TESE) in patients with nonmosaic Klinefelter syndrome (KS). METHODS A total of 143 nonmosaic KS patients underwent micro-TESE in the Center of Reproductive Medicine of Peking University Third Hospital between July 2012 and August 2016. We analyzed their clinical and follow-up data and evaluated the outcomes. RESULTS Spermatozoa were successfully retrieved from the testicular tissue in 44.76% (64/143) of the patients, 84.4% (54/64) by unilateral and 15.6% (10/64) by bilateral micro-TESE. Seventy-five of the KS patients were followed up in the years of 2014 and 2015. Of the 34 patients with successful sperm retrieval, 73.52% (25/34) achieved clinical pregnancy and 8 boys and 8 girls were already born in 14 of the 25 cases. CONCLUSIONS The micro-TESE is a useful method for sperm retrieval in nonmosaic KS patients, with high rates of sperm retrieval, clinical pregnancy, and birth of biological offspring.
Collapse
Affiliation(s)
- Jia-Ming Mao
- Center of Reproductive Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - De-Feng Liu
- Center of Reproductive Medicine,Peking University Third Hospital, Beijing 100191, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Han Wu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Hai-Tao Zhang
- Center of Reproductive Medicine, Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Hong-Liang Zhang
- Center of Reproductive Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Yu-Zhuo Yang
- Center of Reproductive Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Ya-Peng Wang
- Center of Reproductive Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Ying Lian
- Center of Reproductive Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Lu-Lin Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Jie Qiao
- Center of Reproductive Medicine, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
17
|
Mao JM, Jiang H, Wang CH, Ning KQ, Liu JH, Yang SW, Li HS, Zhou SH, Zhang ZC, Xu JX, Huang YH. [Qilin Pills for idiopathic oligoasthenospermia: A multi-centered randomized double-blind controlled clinical trial]. Zhonghua Nan Ke Xue 2017; 23:251-255. [PMID: 29706047] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To evaluate the clinical efficacy and safety of Qilin Pills in the treatment of oligoasthenospermia in infertile men. METHODS This multi-centered randomized double-blind controlled clinical trial included 216 infertile males with oligoasthenospermia, 108 in the trial group and the other 108 in the control, the former treated with Qilin Pills at the dose of 6 g tid while the latter with Wuziyanzong Pills at 6 g bid, both for 12 weeks. We examined the total sperm count, sperm motility and the count of progressively motile sperm of the patients before and at 4, 8 and 12 weeks after medication and evaluated the safety of the drug based on the adverse events and the laboratory results of blood and urine routine examinations and liver and kidney function tests. RESULTS Compared with the baseline, the patients in the trial group showed a significant time-dependent improvement after 4, 8 and 12 weeks of medication in sperm motility (21.75% vs 27.54%, 29.04% and 32.95%, P <0.05), total sperm count (156.27 ×106 vs 177.33, 188.18 and 205.44 ×106, P <0.05), and the count of progressively motile sperm (32.08 ×10⁶/ml vs 46.33, 50.98 and 61.10 ×10⁶/ml, P <0.05). The three parameters above were also improved in the controls, but more significantly in the trial group (P <0.05). CONCLUSIONS Qilin Pills can evidently improve the semen quality of oligoasthenospermia patients with no obvious adverse events.
Collapse
Affiliation(s)
- Jia-Ming Mao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Chuan-Hang Wang
- Department of Andrology, Beijing Sino-Japan Friendship Hospital, Beijing 100029, China
| | - Ke-Qin Ning
- Department of Andrology, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu 210029, China
| | - Ji-Hong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Shu-Wen Yang
- Department of Urology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, China
| | - Hai-Song Li
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Shao-Hu Zhou
- Department of Urology and Andrology, The First Affiliated Hospital, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510405, China
| | - Zhi-Chao Zhang
- Department of Andrology, Peking University First Hospital, Beijing 100034, China
| | - Ji-Xiu Xu
- Department of Urology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Yong-Han Huang
- Department of Urology, Foshan First People's Hospital, Foshan, Guangdong 528000, China
| |
Collapse
|
18
|
Hong K, Zhao LM, Xu SX, Tang WH, Mao JM, Liu DF, Jiang H, Ma LL, Qiao J. Multiple factors affecting surgical outcomes and patency rates in use of single-armed two-suture microsurgical vasoepididymostomy: a single surgeon's experience with 81 patients. Asian J Androl 2016; 18:129-33. [PMID: 26289398 PMCID: PMC4736341 DOI: 10.4103/1008-682x.159718] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Vasoepididymostomy (VE), as the most challenging procedure in microsurgeries, is often carried out with a double-armed two-suture technique. In this study, we evaluated the efficacy and safety of the single-armed two-suture VEs on humans and studied the factors that could possibly affect the patency rates. From July 2012 to July 2013, we reviewed 81 patients with consecutive primary epididymal obstruction who underwent single-armed two-suture longitudinal intussusception microsurgical VEs by a single surgeon, Kai Hong (KH). At the same time, we analyzed seven factors that possibly related to the patency rates. With the single-armed technique, a total of 81 men underwent the microsurgical VEs. Data on 62 patients were completely recorded. 19 patients were lost to follow-up. Mean age was 31 years old. Mean follow-up time was 8.8 (2-17) months. The patency rate was 66.1% (41/62). Natural pregnancy rate was 34.1% (14/41). Overall pregnancy rate was 22.6% (14/62). No severe surgical complications were noted. With logistic regression test analysis, there were two factors related to a higher patency rate: anastomosis sites (P = 0.035) and motile sperm found in the epididymal fluid (P = 0.006). Motile sperm found in the epididymal fluid were associated with a higher patency rate (OR = 11.80, 95% CI = 1.79, 77.65). The single-armed two-suture longitudinal VE technique is feasible for microsurgical practice. The patency and pregnancy rates are comparable to the doubled-armed technique. Anastomosis sites and motile sperm found in the epididymal fluid were the most two important factors related to higher patency.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Hui Jiang
- Department of Urology, Peking University Third Hospital; Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, China
| | | | | |
Collapse
|
19
|
Zhao LM, Jiang H, Hong K, Lin HC, Tang WH, Liu DF, Mao JM, Lian Y, Ma LL. [Outcome of treatment of Y chromosome AZFc microdeletion patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:607-611. [PMID: 29263498] [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: 06/07/2023]
Abstract
OBJECTIVE To discuss the treatment options for patients with azoospermia factor (AZF) c microdeletion on Y chromosome. METHODS One hundred and eighty three patients, who were diagnosed as AZFc microdeletion on Y chromosome in Peking University Third Hospital, were recruited in our study. In order to get better treatment option for this kind of patients, we retrospectively analyzed their clinic data including the treatment process and pregnancy outcome and found out the characteristics of their semen. RESULTS Among the 183 patients, sperms can be found in ejaculated semen in 105 patients (57.4%, 105/183). One hundred and three patients (98.1%, 103/105) were diagnosed as severe or extremely severe oligospermia. Regular medication was given to 98 patients, 6 patients (6.1%, 6/98) of which got natural pregnancy. The other 99 patients who have sperms in their semen received intracytoplasmic sperm injection (ICSI), 68 patients (68.7%, 68/99) of which got pregnancy. Seventy eight patients were diagnosed as azoospermia among all the 183 patients. Forty nine patients received testicular sperm aspiration (TESA), and 21 patients choose to receive micro-TESE directly. Among the 49 patients with TESA, sperms were retrieved in 17 patients (34.7%, 17/49), and sperms were not retrieved in 32 patients (65.3%, 32/49), of which 12 patients (37.5%, 12/32) gave up treatment and 20 patients (62.5%, 20/32) choose micro-TESE. Among the 41 patients who choose to receive micro-TESE, operation has been done on 19 patients, of which 11 patients (57.9%, 11/19) got sperms. Among the 11 patients, TESA has been done on 6 patients before micro-TESE, of which 4 patients (66.6%, 4/6) got sperms. ICSI has already been done on 7 azoospermia AZFc microdeletion patients who underwent micro-TESE, of which 4 patients (57.1%, 4/7) get pregnancy. CONCLUSION AZFc microdeletion patients who had sperms were always diagnosed as severe or extremely severe oligospermia. ICSI was their first choice instead of drug therapy. For AZFc microdeletion patients who were diagnosed as azoospermia, TESA was one of their choices, however, the success rate is not high. Micro-TESE is still possible to get sperms even after the failure of TESA. Therefore, we may choose micro-TESE instead of TESA in some azoospermia patients in order to reduce surgical trauma on patients.
Collapse
Affiliation(s)
- L M Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - K Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H C Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - W H Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - D F Liu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - J M Mao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Y Lian
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
20
|
Zhao LM, Jiang H, Hong K, Lin HC, Tang WH, Liu DF, Mao JM, Lian Y, Ma LL. [Outcome of treatment of Y chromosome AZFc microdeletion patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:607-611. [PMID: 27538137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To discuss the treatment options for patients with azoospermia factor (AZF) c microdeletion on Y chromosome. METHODS One hundred and eighty three patients, who were diagnosed as AZFc microdeletion on Y chromosome in Peking University Third Hospital, were recruited in our study. In order to get better treatment option for this kind of patients, we retrospectively analyzed their clinic data including the treatment process and pregnancy outcome and found out the characteristics of their semen. RESULTS Among the 183 patients, sperms can be found in ejaculated semen in 105 patients (57.4%, 105/183). One hundred and three patients (98.1%, 103/105) were diagnosed as severe or extremely severe oligospermia. Regular medication was given to 98 patients, 6 patients (6.1%, 6/98) of which got natural pregnancy. The other 99 patients who have sperms in their semen received intracytoplasmic sperm injection (ICSI), 68 patients (68.7%, 68/99) of which got pregnancy. Seventy eight patients were diagnosed as azoospermia among all the 183 patients. Forty nine patients received testicular sperm aspiration (TESA), and 21 patients choose to receive micro-TESE directly. Among the 49 patients with TESA, sperms were retrieved in 17 patients (34.7%, 17/49), and sperms were not retrieved in 32 patients (65.3%, 32/49), of which 12 patients (37.5%, 12/32) gave up treatment and 20 patients (62.5%, 20/32) choose micro-TESE. Among the 41 patients who choose to receive micro-TESE, operation has been done on 19 patients, of which 11 patients (57.9%, 11/19) got sperms. Among the 11 patients, TESA has been done on 6 patients before micro-TESE, of which 4 patients (66.6%, 4/6) got sperms. ICSI has already been done on 7 azoospermia AZFc microdeletion patients who underwent micro-TESE, of which 4 patients (57.1%, 4/7) get pregnancy. CONCLUSION AZFc microdeletion patients who had sperms were always diagnosed as severe or extremely severe oligospermia. ICSI was their first choice instead of drug therapy. For AZFc microdeletion patients who were diagnosed as azoospermia, TESA was one of their choices, however, the success rate is not high. Micro-TESE is still possible to get sperms even after the failure of TESA. Therefore, we may choose micro-TESE instead of TESA in some azoospermia patients in order to reduce surgical trauma on patients.
Collapse
Affiliation(s)
- L M Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - K Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H C Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - W H Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - D F Liu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - J M Mao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Y Lian
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
21
|
Tang WH, Zhuang XJ, Ma LL, Hong K, Zhao LM, Liu DF, Mao JM, Zhang HL, Jiang H. Effect of sildenafil on erectile dysfunction and improvement in the quality of sexual life in China: a multi-center study. Int J Clin Exp Med 2015; 8:11539-11543. [PMID: 26379977 PMCID: PMC4565360] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 07/06/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Erectile dysfunction (ED) is a common medical condition in middle-aged and elderly men; however, large-scale and multi-center epidemiologic studies about the treatment effects on ED in China are lacking. OBJECTIVE To elucidate the efficacy and safety of a phosphodiesterase type 5 inhibitor (PDE5-i) in the treatment of men with ED in China. METHODS Patients clinically diagnosed with ED from 53 andrology centers in 15 metropolitan areas in China who were willing to undergo treatment for ED were enrolled in the study. Each participant received 4 weeks of unique PDE5-i treatment, and completed the following forms (International Index of Erectile Function score 5 [IIEF-5], the Erection Hardness Score [EHS], Self-Esteem and Relationship [SEAR], and SF-36 of Health Related Quality of Life). Pre-and post-treatment data were compared using descriptive analysis. RESULTS A total of 1956 ED patients were included in this study; 1922 patients provided valid questionnaires for analysis. Four weeks of sildenafil treatment was considered effective and safe. Specifically, the IIEF-5 sores (11.30 ± 3.7 vs. 20.02 ± 5.1, P < 0.05), EHS levels (99.1% patients increases to level 3 or 4), and the SEAR scores (32.5 vs. 55.1, P < 0.05) were significantly improved compared to baseline. Sildenafil therapy also significantly improved the satisfaction, enjoyment, and frequency of sexual attempts and sexual activity, as well as physical vigor and mental health scores. CONCLUSION The present study provides direct evidence regarding the efficacy and safety of sildenafil therapy in a large sample of Chinese men with ED, thus verifying that sildenafil improved the symptoms and quality of sexual life.
Collapse
Affiliation(s)
- Wen-Hao Tang
- Department of Urology, Peking University Third Hospital Beijing 100191, People's Republic of China
| | - Xin-Jie Zhuang
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Peking University Third Hospital, Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction Beijing 100191, People's Republic of China
| | - Lu-Lin Ma
- Department of Urology, Peking University Third Hospital Beijing 100191, People's Republic of China
| | - Kai Hong
- Department of Urology, Peking University Third Hospital Beijing 100191, People's Republic of China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital Beijing 100191, People's Republic of China
| | - De-Feng Liu
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Peking University Third Hospital, Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction Beijing 100191, People's Republic of China
| | - Jia-Ming Mao
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Peking University Third Hospital, Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction Beijing 100191, People's Republic of China
| | - Hong-Liang Zhang
- Department of Urology, Peking University Third Hospital Beijing 100191, People's Republic of China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital Beijing 100191, People's Republic of China
| |
Collapse
|
22
|
Zhao LM, Jiang H, Hong K, Lu M, Tang WH, Mao JM, Yang QL, Ma LL. [Influence of recombination abnormality in spermatocyte meiosis on the pathology of patients with non-obstructive azoospermia]. Zhonghua Nan Ke Xue 2013; 19:425-428. [PMID: 23757965] [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: 06/02/2023]
Abstract
OBJECTIVE To primarily study the influence of recombination abnormality in human spermatocyte meiosis on the pathology of the patients with non-obstructive azoospermia (NOA). METHODS We obtained testis tissues from 6 NOA patients by testicular biopsy and divided the tissue of each patient into 2 portions, one for pathological examination and the other for immunofluorescent staining. We observed the synaptonemal complex and the numbers of the recombination sites on homologous chromosomes, and analyzed the relationship between abnormal recombination and pathological findings. RESULTS Pathological examination showed that the basement membrane of the seminiferous tubules was thickened in 3 of the cases and atrophied in the other 3, the number of autosomal MLH1 foci in a spermatocyte ranging from 10 to 50 in the former 3, and from 30 to 50 in the latter 3. CONCLUSION The increased range of the homologous chromosomal recombination frequency may be one of the possible factors for the thickening of seminiferous tubule basement membrane and even lumen occlusion in NOA patients.
Collapse
Affiliation(s)
- Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Tang WH, Jiang H, Ma LL, Hong K, Zhao LM, Liu DF, Mao JM, Yang Y, Zhang J, Gao L, Qiao J. [Tadalafil combined with behavior therapy for semen collection from infertile males in whom masturbation fails]. Zhonghua Nan Ke Xue 2013; 19:439-442. [PMID: 23757968] [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: 06/02/2023]
Abstract
OBJECTIVE To study the effect of Tadalafil combined with behavior therapy in helping obtain semen from infertile men in whom masturbation has failed. METHODS Sixty male infertile patients from whom masturbation had failed to obtain semen were equally assigned to receive Tadalafil combined with behavior therapy (combination group) or Tadalafil only (control group). All the patients took Tadalafil 20 mg orally the night before the day of semen collection by masturbation. Before this procedure, the patients of the combination group practiced masturbation 16 - 24 times at home. RESULTS The average ages of the patients were (37.0 +/- 5.1) yr and (37.5 +/- 5.2) yr and their IIEF-5 scores were 16.50 +/- 1.25 and 16.90 +/- 1.09 in the combination and the control group, respectively, neither with statistically significant difference between the two groups. Semen was successfully obtained from 9 patients (30.0%) of the combination group and 1 patient (3.33%) of the control group, with statistically significant difference between the two groups (chi2 = 7.680, P < 0.01). CONCLUSION By training the patients and establishing a conditioned response to masturbation, Tadalafil combined with behavior therapy can significantly increase the success rate of semen collection from the male infertile patients in whom masturbation fails.
Collapse
Affiliation(s)
- Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Tang WH, Jiang H, Ma LL, Hong K, Zhao LM, Mao JM, Yang Y, Zhang X, Huang X, Qiao J. [Detection of spermatozoa in the testicular tissue of non-obstructive azoospermia patients: cell suspension examination versus histopathology]. Zhonghua Nan Ke Xue 2013; 19:68-71. [PMID: 23469666] [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: 06/01/2023]
Abstract
OBJECTIVE To compare cell suspension examination with histopathology in detecting spermatozoa in the testicular tissue of non-obstructive azoospermia (NOA) patients, and to investigate the reliability of sperm retrieval and appropriate therapeutic options when the results of the two methods are inconsistent. METHODS A total of 1 112 NOA patients underwent testicular sperm extraction (TESE), their testicular tissues subjected to cell suspension examination and histopathology, respectively. RESULTS The consistency rate of the two methods was 92.63%, with the sperm detection rate of 41.82% and non-sperm detection rate of 50.81%. Sperm were retrieved from 96.0% (24/25) of the patients on the day of oval retrieval, in whom sperm were found in cell suspension examination but not in histopathology. After intracytoplasmic sperm injection (ICSI), pregnancy was achieved in 8 cases (33.33%), abortion occurred in 4 (16.67%), and non-pregnancy in 12 (50.0%). CONCLUSION Cell suspension examination combined with histopathology for detecting sperm in the testicular tissue of NOA patients gives instant, accurate, reliable and consistent results, and therefore insures successful sperm retrieval for NOA patients during the IVF cycle. In case of inconsistency between the results of the two methods, cell suspension examination is more helpful for clinical therapeutic option.
Collapse
Affiliation(s)
- Wen-Hao Tang
- Department of Urology, Beijing University Third Hospital, Beijing 100191, China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Tang WH, Jiang H, Ma LL, Hong K, Zhong Q, Yang CS, Zhao LM, Liu DF, Mao JM, Yang Y, Chen Q, Yuan RP, Zhang X, Li B, Wei N. [Relationship of sperm morphology with reproductive hormone levels in infertile men]. Zhonghua Nan Ke Xue 2012; 18:243-247. [PMID: 22474991] [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: 05/31/2023]
Abstract
OBJECTIVE To investigate the relationship of sperm morphology with reproductive hormones in infertile men and the pathogenesis of teratozoospermia. METHODS This study included 90 infertile men aged 25 - 40 years. We measured their testis volumes using the Prader orchidometer, conducted routine semen analyses according to the WHO laboratory standard, and determined the concentrations of reproductive hormones and sex hormone-binding globulin (SHBG) by chemiluminescence and the levels of free testosterone (FT) and bioavailable testosterone (BioT). RESULTS All the subjects showed normal sperm concentration. Based on the results of semen morphology analysis, the 90 infertile men were equally divided into groups 1 (morphologically normal sperm <4%), 2 (morphologically normal sperm > or = 4% and <10%), and 3 (morphologically normal sperm > or = 10%), with no significant differences in age among the three groups (P>0.05). The volumes of the left testis were (14.27 +/- 3.65) ml, (16.90 +/- 3.57) ml and (14.57 +/- 3.57) ml, respectively (P = 0.006 group 1 vs group 2, P = 0.741 group 1 vs group 3, P = 0.014 group 2 vs group 3), and those of the right testis were (14.60 +/- 3.70) ml, (16.60 +/- 3.35) ml and (14.67 +/- 3.54) ml, respectively (P = 0.050). There were no significant differences among the three groups in prolactin, follicle-stimulating hormone, luteinising hormone, estradiol, total testosterone and SHBG, (P>0.05). The levels of serum FT were (0.25 +/- 0.07) nmol/L, (0.29 +/- 0.07) nmol/L and (0.31 +/- 0.13) nmol/L (P = 0.086 group 1 vs group 2, P= 0.010 group 1 vs group 3, P= 0.364 group 2 vs group 3), and those of BioT were (5.81 +/- 1.58) nmol/L, (6.78 +/- 1.55) nmol/L and (7.29 +/- 3.02) nmol/L, respectively (P = 0.086 group 1 vs group 2, P = 0.010 group 1 vs group 3, P = 0.364 group 2 vs group 3). The percentage of morphologically normal sperm was positively correlated with the levels of serum FT and BioT (P<0.05). CONCLUSION The higher the levels of serum FT and BioT, the higher the percentage of morphologically normal sperm, which suggests that serum FT and BioT might be involved in the pathogenesis of teratozoospermia.
Collapse
Affiliation(s)
- Wen-Hao Tang
- Department of Urology, Center of Reproductive Medicine, Beijing University Third Hospital, Beijing 10019, China.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Mao JM, Zengrong L, Yongluo C. Constructing new periodic exact solutions of evolution equations. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1999; 60:3589-96. [PMID: 11970192 DOI: 10.1103/physreve.60.3589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/1999] [Indexed: 04/18/2023]
Abstract
For the nonlinear Schrödinger equation, the Korteweg-de Vries equation, and the modified Korteweg-de Vries equation, periodic exact solutions are constructed from their stationary periodic solutions, by means of the Bäcklund transformation. These periodic solutions were not written down explicitly before to our knowledge. Their asymptotic behavior when t-->-infinity is different from that when t-->infinity. Near t=0, the spatial-temporal pattern can change abruptly, and rational solitons can appear randomly in space and time. They correspond to new types of "homoclinic orbits" due to different asymptotic behaviors in time.
Collapse
Affiliation(s)
- J M Mao
- Department of Mathematics, Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong
| | | | | |
Collapse
|
27
|
Chen HM, Wang YY, Mao JM, Cai MS, Jia ZJ. [The synthesis and pharmacological activities of C-galactosides of furanosequiterpenes]. Yao Xue Xue Bao 1997; 32:750-4. [PMID: 11596217] [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: 02/21/2023]
Abstract
Four new C-galactosides were obtained by treatment of 1-O-trifluoroacetly-2, 3, 4, 6-tetra-O-benzly-alpha-D-galactopranose with 7-methoxy-6-(3-pentenyl)-3, 5-dimethylbenzofuran, 7-acetoxy-6-(3-pentenyl)-3, 5-dimethylbenzofuran and 1, 2-dihydrocacalohastin in the presence of Lewis acid. Their structures and compositions were elucidated by elemental analysis and spectroscopic methods. The results of the pharmacological test indicated that the sesquiterpenes are calcium antagonist but their C-galactosides are calcium agonist.
Collapse
Affiliation(s)
- H M Chen
- School of Pharmaceutical Sciences, Beijing Medical University, Beijing 100083
| | | | | | | | | |
Collapse
|
28
|
Chen HM, Wang YY, Mao JM, Cai MS, Jia ZJ. Syntheses and pharmacological activities of the derivatives of furanosesquiterpenes from Ligularia virgaurea. Planta Med 1997; 63:299-302. [PMID: 17252389 DOI: 10.1055/s-2006-957686] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Four benzofuranosesquiterpenes, 1-hydroxy-2-(3'-pentenyl)-3,7-dimethylbenzofuran (1), 1-hydroxy-2-(3'-pentenyl)-3,7-dimethylbenzofuran (2), cacalol (13), and 1,2-dehydrocacalohastin ( 14) were isolated from the rhizomes of Ligularia virgaurea (Compositae). A lipophilic group and an aqueous-favoring group were introduced to the compounds 1 and 13 to afford twelve new derivatives. Their structures were elucidated by spectroscopic methods. The results of the pharmacological test indicated that some of them can block Ca (++) influx by occupying binding sites of dihydropyridine.
Collapse
Affiliation(s)
- H M Chen
- School of Pharmaceutical Sciences, Beijing Medical University, Beijing 100083, People's Republic of China
| | | | | | | | | |
Collapse
|
29
|
Lee SW, Chen MZ, Chan HW, Lam L, Guo JX, Mao JM, Lam KK, Guo LJ, Li HY, Chan KK. No subacute thrombosis and femoral bleeding complications under full anticoagulation in 150 consecutive patients receiving non-heparin-coated intracoronary Palmaz-Schatz stents. Am Heart J 1996; 132:1135-46. [PMID: 8969564 DOI: 10.1016/s0002-8703(96)90456-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Intracoronary stenting has been shown to have better immediate and long-term clinical outcomes and less restenosis than standard balloon angioplasty. However, the benefit was achieved at the cost of higher rates of coronary thrombosis, bleeding complications, the need for anticoagulation, and longer hospital stay. For the latter reasons there is a tendency to replace the anticoagulants by antiplatelet agents alone after stenting. However, we prospectively monitored 150 consecutive patients (133 men, 17 women, mean age 58.5 years) from two centers since February 1993. They all had coronary artery disease and underwent percutaneous implantation of non-heparin-coated Palmaz-Schatz coronary stents under a full but lower dose of anticoagulation. The femoral approach was used in all patients except one. In the 150 patients, 200 stents were implanted in 165 target arteries with 172 lesions. Stenting was performed without the guidance of intravascular ultrasonography; high-pressure poststenting inflation was used in only 17.3% of patients with less than optimal angiographic results. Coronary angiography was performed at baseline, immediately after the procedure, and after 6 months (mean 207 +/- 53.6 days SD) of stenting. The mean (+/-SD) coronary minimum luminal diameter increased from 0.52 0.31 mm to 3.13 +/- 0.42 mm immediately after stenting was performed and was 2.12 +/- 0.91 mm at 6 months. There was a 0% subacute thrombosis rate and a 0% femoral bleeding complication rate in the whole series. Only three (2%) major events occurred: one Q-wave myocardial infarction from closure of an angioplasty site distal to the stent on a very long lesion, one cerebrovascular accident, and one noncoronary-related death. The only patient who underwent the brachial approach had hematoma; otherwise no other minor event occurred. The mean hospital stay was 4.5 days in one of the two study centers. The long-term clinical follow-up rate was 97.3%. The mean (+/- SD) clinical follow-up period was 589 +/- 363 days. Clinical symptoms improved; the percentage of patients who had angina according to the Canadian Cardiovascular Society functional class II, III, and IV was 31.3%, 44.7%, and 4%, respectively, before stenting was performed and was reduced to 4.7%, 3.7%, and 0%, respectively at 6-month follow-up after stenting was performed. The 6-month angiographic restudy rate was 90.6%, and the restenosis rate was 18.3%. In contrast to other reported series, these results support the idea that with careful puncture technique and meticulous postoperative wound care, intracoronary stenting can be successfully performed with the patient under full anticoagulation without major risks of bleeding and femoral vascular complications. Furthermore with a full but comparatively lower dose of anticoagulation, subacute thrombotic complications can be reduced to 0% even with non-heparin-coated stents without the use of intravascular ultrasound guidance and without the use of adjunctive high-pressure poststenting inflation in most patients. The restenosis rate and long-term clinical outcomes remained very favorable.
Collapse
Affiliation(s)
- S W Lee
- Department of Medicine, Queen Mary Hospital, Hong Kong, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Mao JM, Xie SS, Gu BY, Yang GZ. Far-infrared radiation-induced inter-edge-channel scattering in a high magnetic field. Phys Rev B Condens Matter 1994; 50:10924-10931. [PMID: 9975196 DOI: 10.1103/physrevb.50.10924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
31
|
Du QH, Wang ZG, Mao JM. Simulation of lateral confinement in very narrow channels. Phys Rev B Condens Matter 1994; 49:17452-17455. [PMID: 10010933 DOI: 10.1103/physrevb.49.17452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
32
|
Du QH, Wang TH, Mao JM, Cheng WQ, Zhou JM, Huang Q. Characteristics of the magnetic depopulation of subbands in very narrow systems. Phys Rev B Condens Matter 1992; 46:4992-4995. [PMID: 10004266 DOI: 10.1103/physrevb.46.4992] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
33
|
Guo JX, Mao JM, Yan WD, Liu CJ, Chen MZ. Single coronary artery. Chin Med J (Engl) 1990; 103:781-3. [PMID: 2123783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- J X Guo
- Third Affiliated Hospital, Beijing Medical University
| | | | | | | | | |
Collapse
|
34
|
Chan MC, Lee G, Guo JX, Mao JM, Chen FR, Yan WD, Xie DY, Rink DL, Argenal AJ, Mason DT. Percutaneous coronary laser angioplasty using quick short bursts of laser thermal energy for chronic total occlusions. Am J Cardiol 1989; 64:940-2. [PMID: 2801565 DOI: 10.1016/0002-9149(89)90849-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- M C Chan
- Beijing Medical University, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Chen MZ, Guo JX, Mao JM. [Percutaneous coronary laser angioplasty in a patient with chronic total obstruction of the right coronary artery]. Zhonghua Xin Xue Guan Bing Za Zhi 1989; 17:86-7, 126. [PMID: 2791882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Percutaneous coronary laser angioplasty was performed in one patient with total occlusion of right coronary artery without further balloon angioplasty in the ablated site. First of all, we used intracoronary urokinase in a total amount of 60,000 units that resulted in opening the total occluded right coronary artery to provide a passage of guidewire of laser catheter. Then a laser catheter was inserted through the guide catheter and its metal cap was in contact with the atherosclerotic lesion. The Nd:YAG laser was activated to vaporize the lesion (total energies of 54 J). Finally, the degree of residual stenosis was reduced from 95% to 20%. Percutaneous coronary laser angioplasty is a new method in treating coronary artery disease, yet it is still in its infant stage and further work is needed to develop this technological procedure.
Collapse
|
36
|
|
37
|
Mao JM, Satija II, Hu B. Evidence for a new period-doubling sequence in four-dimensional symplectic maps. Phys Rev A Gen Phys 1985; 32:1927-1929. [PMID: 9896301 DOI: 10.1103/physreva.32.1927] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|