1
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Ge Y, Lu J, Tang S, Xu Y, Liang Y. Performance evaluation of sperm concentration, motility, and morphological analysis for GSA-810 series of sperm quality analysis system. J Clin Lab Anal 2023; 37:e24986. [PMID: 38009489 PMCID: PMC10756940 DOI: 10.1002/jcla.24986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/16/2023] [Accepted: 10/28/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND The performance evaluation of each computer-assisted sperm analysis (CASA) system may provide a basis for the interpretation of clinical results and further improvement of the CASA system. METHODS The accuracy of the GSA-810 CASA system was evaluated by detecting latex bead quality control products. The precision of sperm concentration, morphology, and percentages of progressively motile sperm (PR) were evaluated by coefficient of variation (CV). Three samples with sperm concentration of about 100 × 106 /mL were diluted to evaluate the linear range. RESULTS The detection values of latex beads were within the range of target values. The CVs of sperm concentration and PR were significantly and negatively correlated with sperm concentration (r = -0.561, p = 0.001) and PR value (r = -0.621, p < 0.001), respectively. The R2 values of the linear range of sperm concentration were ≥0.99. There was no significant difference in sperm motility and PR within 1-10 min at 36.5°C ± 0.5°C. The coincidence rates of sperm morphology and sperm head morphology for 36 semen samples analyzed by the GSA-810 system and manual method were 99.40% and 99.67%, respectively. The CVs of the percentage of sperm with abnormal morphology and percentage of sperm with abnormal head morphology were less than 5%. CONCLUSION The GSA-810 system can accurately analyze normal semen samples, but the repeatability of the results is poor for oligozoospermia and asthenozoospermia samples. The future CASA system for analyzing sperm morphology should focus on recognizing the middle and tail segments of a spermatozoon.
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Affiliation(s)
- Yan‐Mei Ge
- Center for Reproductive Medicine, Zhongda HospitalSoutheast UniversityNanjingJiangsuChina
| | - Jin‐Chun Lu
- Center for Reproductive Medicine, Zhongda HospitalSoutheast UniversityNanjingJiangsuChina
| | - Shan‐Shan Tang
- Center for Reproductive Medicine, Zhongda HospitalSoutheast UniversityNanjingJiangsuChina
| | - Yuan‐Hua Xu
- Center for Reproductive Medicine, Zhongda HospitalSoutheast UniversityNanjingJiangsuChina
| | - Yuan‐Jiao Liang
- Center for Reproductive Medicine, Zhongda HospitalSoutheast UniversityNanjingJiangsuChina
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2
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Bai X, Wang P. Relationship between sperm NAD + concentration and reproductive aging in normozoospermia men:A Cohort study. BMC Urol 2022; 22:159. [PMID: 36182928 PMCID: PMC9526896 DOI: 10.1186/s12894-022-01107-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 09/09/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The mechanisms of age-dependent reproductive decline in men are largely overlooked. An age-dependent reduction in nicotinamide adenine dinucleotide (NAD+) levels has been reported in multiple somatic and female reproductive tissues, including oocytes and ovarian tissue. However, the relationship between NAD + levels and male reproduction has not yet been studied. In the current study, the association between sperm NAD + level and paternal age was investigated. In addition, we also investigated whether sperm NAD + levels were related to semen quality. METHODS In this pilot observational cohort study, semen samples from 51 male subjects who visited a university-affiliated reproductive medical center for preconception consultation (< 30 years: n = 13, 30-40 years: n = 19, > 40 years: n = 19) were recruited. Their anthropometric characteristics were recorded, and semen analysis was performed. Their sperm NAD + levels were evaluated spectrophotometrically. RESULTS There were significant differences among the three age groups in the major parameters of semen quality. The sperm NAD + level was, however, similar among the three groups (< 30 years: 91.61 ± 15.59 nmol/106 sperm, 30-40 years: 125.60 ± 16.28 nmol/106 sperm, > 40 years: 115.59 ± 16.55 nmol/106 sperm). Additionally, linear regression also revealed no correlation between sperm NAD + concentration and the age of the participants (r2 = 0.018, p = 0.35). Noticeably, a negative correlation was found between the sperm NAD + concentrations and the sperm quality parameters, including sperm concentration (r2 = 0.78, p < 0.0001), sperm count (r2 = 0.47, p < 0.0001), mobile sperm number (r2 = 33, p < 0.0001), and DFI (r2 = 0.35, p < 0.0001). The semen volume and mobility rate were not related to the sperm NAD + concentration. CONCLUSION Unlike the age-related decrease of NAD + levels in oocytes and ovarian tissue, the sperm NAD + concentration is not age dependent. Sperm NAD + levels are negatively correlated with sperm quality, suggesting a unique role of NAD + in spermatogenesis, which warrants further study and opens opportunities for pharmaceutical interventions for oligozoospermia.
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Affiliation(s)
- Xueyan Bai
- Medical Center for Human Reproduction, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, PR China
| | - Peng Wang
- Medical Center for Human Reproduction, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, PR China.
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3
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Zou S, Li C, Sun H, Xu P, Zhang J, Ma P, Yao Y, Huang X, Grzegorzek M. TOD-CNN: An effective convolutional neural network for tiny object detection in sperm videos. Comput Biol Med 2022; 146:105543. [PMID: 35483229 DOI: 10.1016/j.compbiomed.2022.105543] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/30/2022] [Accepted: 04/17/2022] [Indexed: 01/05/2023]
Abstract
The detection of tiny objects in microscopic videos is a problematic point, especially in large-scale experiments. For tiny objects (such as sperms) in microscopic videos, current detection methods face challenges in fuzzy, irregular, and precise positioning of objects. In contrast, we present a convolutional neural network for tiny object detection (TOD-CNN) with an underlying data set of high-quality sperm microscopic videos (111 videos, > 278,000 annotated objects), and a graphical user interface (GUI) is designed to employ and test the proposed model effectively. TOD-CNN is highly accurate, achieving 85.60% AP50 in the task of real-time sperm detection in microscopic videos. To demonstrate the importance of sperm detection technology in sperm quality analysis, we carry out relevant sperm quality evaluation metrics and compare them with the diagnosis results from medical doctors.
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Affiliation(s)
- Shuojia Zou
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Chen Li
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China.
| | - Hongzan Sun
- Shengjing Hospital, China Medical University, Shenyang, China
| | - Peng Xu
- Jinghua Hospital, Shenyang, China
| | - Jiawei Zhang
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Pingli Ma
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Yudong Yao
- Department of Electrical and Computer Engineering, Stevens Institute of Technology, USA
| | - Xinyu Huang
- Institute of Medical Informatics, University of Luebeck, Luebeck, Germany
| | - Marcin Grzegorzek
- Institute of Medical Informatics, University of Luebeck, Luebeck, Germany
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4
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Extended semen examinations in the sixth edition of the World Health Organization manual on semen analysis: contributing to the understanding of the function of the male reproductive system. Fertil Steril 2022; 117:252-257. [PMID: 34986981 DOI: 10.1016/j.fertnstert.2021.11.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 11/29/2021] [Accepted: 11/29/2021] [Indexed: 12/26/2022]
Abstract
In the sixth edition of the World Health Organization manual for the examination and processing of human semen, extended examination methods to provide key diagnostics in the investigation of the male reproductive system function are elaborated. These go beyond the basic analysis of semen and may be useful in more specifically guiding the clinical characterization of fertile or infertile men. Among the extended examinations included in the chapter, the use of multiparametric scoring for sperm morphological defects, sperm DNA fragmentation, and the roles for computer-assisted analysis of sperm or semen are arguably those that will be the most widely used and may also cause the most debate.
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5
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Chen A, Li C, Zou S, Rahaman MM, Yao Y, Chen H, Yang H, Zhao P, Hu W, Liu W, Grzegorzek M. SVIA dataset: A new dataset of microscopic videos and images for computer-aided sperm analysis. Biocybern Biomed Eng 2022. [DOI: 10.1016/j.bbe.2021.12.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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6
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Agarwal A, Sharma R, Gupta S, Finelli R, Parekh N, Selvam MKP, Pompeu CP, Madani S, Belo A, Darbandi M, Singh N, Darbandi S, Covarrubias S, Sadeghi R, Arafa M, Majzoub A, Caraballo M, Giroski A, McNulty K, Durairajanayagam D, Henkel R. Standardized Laboratory Procedures, Quality Control and Quality Assurance Are Key Requirements for Accurate Semen Analysis in the Evaluation of Infertile Male. World J Mens Health 2021; 40:52-65. [PMID: 33987999 PMCID: PMC8761242 DOI: 10.5534/wjmh.210022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/05/2021] [Accepted: 03/07/2021] [Indexed: 11/25/2022] Open
Abstract
Semen analysis is a basic test for evaluating male fertility potential, as it plays an essential role in driving the future management and treatment of infertility in couples. Manual semen analysis includes the evaluation of both macroscopic and microscopic parameters, whereas automated semen analysis is conducted through a computer-aided sperm analysis system and can include additional parameters that are not evaluated by manual analysis. Both quality control (QC) and quality assurance (QA) are important to ensure reproducible results for semen analysis, and represent fundamental checks and balances of all stages (pre-analytical, analytical, and post-analytical) of semen analysis. To ensure accuracy and precision, the laboratory technicians' performance should be evaluated biannually. This narrative review aims to describe standardized laboratory procedures for an accurate assessment of semen parameters that incorporate both QC and QA practices.
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Affiliation(s)
- Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland, OH, USA.
| | - Rakesh Sharma
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | - Sajal Gupta
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | - Renata Finelli
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | - Neel Parekh
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | - Manesh Kumar Panner Selvam
- American Center for Reproductive Medicine, Cleveland, OH, USA.,Department of Urology, Tulane University Health Sciences Center, New Orleans, LA, USA
| | | | - Sarah Madani
- Department of Biology and Physiology of Organisms, Faculty of Biological Sciences, University of Science and Technnology, Houari Boumedien, Algiers, Algeria
| | - Andrea Belo
- Huntington Centro de Medicina Reproditiva S/A, Sao Paulo, São Paulo, Brazil
| | - Mahsa Darbandi
- Fetal Health Research Center. Hope Generation Foundation, Tehran, Iran
| | | | - Sara Darbandi
- Fetal Health Research Center. Hope Generation Foundation, Tehran, Iran
| | | | - Raha Sadeghi
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | - Mohamed Arafa
- American Center for Reproductive Medicine, Cleveland, OH, USA.,Department of Urology, Hamad Medical Corporation, Doha, Qatar.,Department of Urology, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - Ahmad Majzoub
- American Center for Reproductive Medicine, Cleveland, OH, USA.,Department of Urology, Hamad Medical Corporation, Doha, Qatar.,Department of Urology, Weill Cornell Medicine-Qatar, Doha, Qatar
| | | | - Alyssa Giroski
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | | | - Damayanthi Durairajanayagam
- Department of Physiology, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Selangor, Malaysia
| | - Ralf Henkel
- American Center for Reproductive Medicine, Cleveland, OH, USA.,Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK.,Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
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7
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Onofre J, Geenen L, Cox A, Van Der Auwera I, Willendrup F, Andersen E, Campo R, Dhont N, Ombelet W. Simplified sperm testing devices: a possible tool to overcome lack of accessibility and inconsistency in male factor infertility diagnosis. An opportunity for low- and middle- income countries. Facts Views Vis Obgyn 2021; 13:79-93. [PMID: 33889864 PMCID: PMC8051200 DOI: 10.52054/fvvo.13.1.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Background Manual semen assessment (MSA) is a key component in a male’s fertility assessment. Clinicians rely on it to make diagnostic and treatment decisions. When performed manually, this routine laboratory test is prone to variability due to human intervention which can lead to misdiagnosis and consequently over- or under- treatment. For standardisation, continuous training, quality control (QC) programs and pricy Computer-Assisted Sperm Analysis (CASA) systems have been proposed, yet, without resolving intra- and inter-laboratory variability. In response, promising simplified sperm testing devices, able to provide cost-effective point-of-care male infertility diagnosis are prospected as a plausible solution to resolve variability and increase access to sperm testing. Materials and methods A throughout literature research for semen testing, sperm analysis, smart-phone assisted semen analysis, ‘at-home’ semen testing, male infertility, infertility in developing countries, infertility in low- and middle-income countries (LMIC) and quantitative sperm analysis was performed. A total of 14 articles, specific to ‘at-home’ simplified sperm assessment, were included to treat the core subject. Results Continuous training and consistent QC, are sine qua none conditions to achieve accurate and comparable MSA. Compliance does not rule-out variability, nevertheless. Emerging simplified sperm assessment devices are an actual alternative to resolve the lack of standardisation and accessibility to sperm analysis. YO ® , SEEM ® , and ExSeed ® are commercially available, user-friendly smartphone-based devices which can accurately measure volume, sperm concentration (millions/ml) and total motile sperm count. More broadly, by cost-effectiveness, availability, accuracy and convenient application, these devices could effectively select patients for first-line artificial reproduction treatments such as intrauterine insemination. Conclusions Accuracy and cost-effectiveness make smart-phone based sperm testing devices a practical and realistic solution to overcome variability in MSA. Importantly, these tools represent an actual opportunity to standardise and improve male subfertility diagnosis and treatment, especially in LMIC. However, before clinical application is possible, guidelines, further testing with special attention on accuracy in washed sperm, availability, cost-benefit and reliability are required.
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Affiliation(s)
- J Onofre
- Genk Institute for Fertility Technology, Genk, Belgium.,Department of Obstetrics, Gynaecology and Infertility, Ziekenhuis Oost Limburg, Genk, Belgium
| | - L Geenen
- University of Hasselt, Faculty of Medicine and Life Sciences, Diepenbeek, Belgium
| | - A Cox
- Department of Obstetrics, Gynaecology and Infertility, Ziekenhuis Oost Limburg, Genk, Belgium
| | - I Van Der Auwera
- Department of Obstetrics, Gynaecology and Infertility, Ziekenhuis Oost Limburg, Genk, Belgium
| | | | | | - R Campo
- Genk Institute for Fertility Technology, Genk, Belgium.,Department of Obstetrics, Gynaecology and Infertility, Ziekenhuis Oost Limburg, Genk, Belgium
| | - N Dhont
- Genk Institute for Fertility Technology, Genk, Belgium.,Department of Obstetrics, Gynaecology and Infertility, Ziekenhuis Oost Limburg, Genk, Belgium
| | - W Ombelet
- Genk Institute for Fertility Technology, Genk, Belgium.,Department of Obstetrics, Gynaecology and Infertility, Ziekenhuis Oost Limburg, Genk, Belgium
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8
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Jueraitetibaike K, Ding Z, Wang DD, Peng LP, Jing J, Chen L, Ge X, Qiu XH, Yao B. The effect of vitamin D on sperm motility and the underlying mechanism. Asian J Androl 2020; 21:400-407. [PMID: 30618415 PMCID: PMC6628736 DOI: 10.4103/aja.aja_105_18] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Vitamin D deficiency is a common health issue around the world. We therefore evaluated the associations of semen quality with both serum and seminal plasma vitamin D levels and studied the mechanisms underlying these by incubating spermatozoa with 1,25(OH)2D in vitro. Two hundred and twenty-two men were included in our study. Vitamin D was detected using an electrochemiluminescence method. Spermatozoa used for in vitro experiments were isolated by density gradient centrifugation. Positive relationships of serum 25(OH)D with semen volume and seminal plasma fructose were identified. Seminal plasma 25(OH)D level showed no relationship with serum 25(OH)D level, while it was inversely associated with sperm concentration and positively correlated with semen volume and sperm kinetic values. In vitro, sperm kinetic parameters increased after incubation with 1,25(OH)2D, especially upon incubation for 30 min with it at a concentration of 0.1 nmol l−1. Under these incubation conditions, the upward migration of spermatozoa increased remarkably with increasing adenosine triphosphate (ATP) concentration. The concentration of cyclic adenosine monophosphate (cAMP) and the activity of protein kinase A (PKA) were both elevated, and the PKA inhibitor, N-[2-(p-Bromocinnamylamino)ethyl]-5-isoquinolinesulfonamide dihydrochloride (H89) reversed the increase of ATP production. The concentrations of cytoplasmic calcium ions and nicotinamide adenine dinucleotide (NADH) were both enhanced, while mitochondrial calcium uniporter (MCU) inhibitor, Ruthenium 360 (Ru360) did not reverse the increase of ATP production. Therefore, seminal plasma vitamin D may be involved in regulating sperm motility, and 1,25(OH)2D may enhance sperm motility by promoting the synthesis of ATP both through the cAMP/PKA pathway and the increase in intracellular calcium ions.
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Affiliation(s)
- Kadiliya Jueraitetibaike
- Center of Reproductive Medicine, Nanjing Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing 210002, China
| | - Zheng Ding
- The Affiliated Jiangning Hospital of Nanjing Medical School, Nanjing 210000, China
| | - Dan-Dan Wang
- Center of Reproductive Medicine, Nanjing Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing 210002, China
| | - Long-Ping Peng
- Urology Department, Shunde Hospital of Southern Medical University, Foshan 528300, China
| | - Jun Jing
- Center of Reproductive Medicine, Nanjing Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing 210002, China
| | - Li Chen
- Center of Reproductive Medicine, Nanjing Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing 210002, China
| | - Xie Ge
- Center of Reproductive Medicine, Nanjing Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing 210002, China
| | - Xu-Hua Qiu
- Center of Reproductive Medicine, Nanjing Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing 210002, China
| | - Bing Yao
- Center of Reproductive Medicine, Nanjing Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing 210002, China
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9
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Hook KA, Fisher HS. Methodological considerations for examining the relationship between sperm morphology and motility. Mol Reprod Dev 2020; 87:633-649. [PMID: 32415812 DOI: 10.1002/mrd.23346] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 04/10/2020] [Accepted: 04/21/2020] [Indexed: 12/12/2022]
Abstract
Sperm cells of all taxa share a common goal to reach and fertilize an ovum, yet sperm are one of the most diverse cell types in nature. While the structural diversity of these cells is well recognized, the functional significance of variation in sperm design remains elusive. An important function of spermatozoa is a need to migrate toward the ova, often over long distances in a foreign environment, which may include a complex and hostile female reproductive tract. Several comparative and experimental studies have attempted to address the link between sperm morphology and motility, yet the conclusions drawn from these studies are often inconsistent, even within the same taxa. Much of what we know about the functional significance of sperm design in internally fertilizing species has been gleaned from in vitro studies, for which experimental parameters often vary among studies. We propose that discordant results from these studies are in part due to a lack of consistency of methods, conditions that do not replicate those of the female reproductive tract, and the overuse of simple linear measures of sperm shape. Within this review, we provide a toolkit for imaging, quantifying, and analyzing sperm morphology and movement patterns for in vitro studies and discuss emerging approaches. Results from studies linking morphology to motility enhance our understanding of the evolution of adaptive sperm traits and the mechanisms that regulate fertility, thus offering new insights into methods used in assisted reproductive technologies in animal science, conservation and public health.
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Affiliation(s)
- Kristin A Hook
- Department of Biology, University of Maryland, College Park, Maryland
| | - Heidi S Fisher
- Department of Biology, University of Maryland, College Park, Maryland
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10
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Baskaran S, Finelli R, Agarwal A, Henkel R. Diagnostic value of routine semen analysis in clinical andrology. Andrologia 2020; 53:e13614. [PMID: 32400107 DOI: 10.1111/and.13614] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/01/2020] [Indexed: 01/11/2023] Open
Abstract
Infertility is a major health issue affecting over 48.5 million couples around the world, with the male factor accounting for about 50% of the cases. The conventional semen analysis recommended by the World Health Organization (WHO) is the cornerstone in the evaluation of male fertility status. It includes macroscopic and microscopic evaluation of the ejaculate, which reflects the production of spermatozoa in the testes, the patency of the duct system and the glandular secretory activity. Evaluation of seminal fructose, sperm vitality and leucocytes (Endtz test) are useful adjuncts to semen analysis that provide information on specific clinical conditions. Though several computer-assisted sperm analysis (CASA) systems have been developed, conventional methods for semen analysis are still widely accepted in clinical practice. This review summarises the conventional techniques used in routine semen analysis and their diagnostic value in clinical andrology.
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Affiliation(s)
- Saradha Baskaran
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Renata Finelli
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Ralf Henkel
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA.,Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
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11
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Schubert B, Badiou M, Force A. Computer‐aided sperm analysis, the new key player in routine sperm assessment. Andrologia 2019; 51:e13417. [DOI: 10.1111/and.13417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 05/17/2019] [Accepted: 06/03/2019] [Indexed: 01/18/2023] Open
Affiliation(s)
- Benoit Schubert
- Eurofins Biomnis – Institut Rhonalpin IVF Center Clinique du Val d'Ouest – Medicentre Ecully France
| | - Mélanie Badiou
- Eurofins Biomnis – Institut Rhonalpin IVF Center Clinique du Val d'Ouest – Medicentre Ecully France
| | - André Force
- Eurofins Biomnis – Institut Rhonalpin IVF Center Clinique du Val d'Ouest – Medicentre Ecully France
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12
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Ji H, Miao M, Liang H, Shi H, Ruan D, Li Y, Wang J, Yuan W. Exposure of environmental Bisphenol A in relation to routine sperm parameters and sperm movement characteristics among fertile men. Sci Rep 2018; 8:17548. [PMID: 30510208 PMCID: PMC6277384 DOI: 10.1038/s41598-018-35787-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 11/09/2018] [Indexed: 11/30/2022] Open
Abstract
Although several human studies have examined bisphenol A (BPA) exposure in relation to routine sperm parameters, evidence of BPA’s effects on sperm movement characteristics is limited. We examined associations of BPA exposure with sperm parameters including sperm movement characteristics among fertile men. The cross-sectional study was conducted in Sandu County, Guizhou Province, China. Subjects provided semen samples analyzed by computer-aided sperm analysis (CASA) system and urine samples for BPA assay. They were invited to complete an in-person interview with a structured questionnaire to obtain demographics, lifestyle factors, etc. In final analyses, 500 subjects were included. We used multivariate linear regression analyses to estimate associations between BPA and sperm parameters after adjusting for potential confounders. BPA was detected in 73.6% of urine samples, with a geometric mean of 0.44 μg/gCreatinine. Compared with subjects of undetected BPA, subjects with detected BPA had increased Linearity (LIN, β: 2.19, 95% confidence interval (CI): 0.37, 4.0), Straightness (STR, β: 1.47, 95% CI: 0.19, 2.75), Wobble (WOB, β: 1.75, 95% CI: 0.26, 3.25), reduced Amplitude of lateral head displacement (ALH, β: −0.26, 95% CI: −0.5, −0.02) and Mean angular displacement (MAD, β: −2.17, 95% CI: −4.22, −0.11). Subjects in the highest tertile of creatinine-adjusted BPA group had lower sperm concentration than those with undetected BPA. Dose-response relationships of BPA with LIN, WOB, ALH, MAD and sperm concentration were demonstrated by statistically significant trends across tertiles of creatinine-adjusted BPA concentrations. Similar results were obtained using unadjusted BPA concentrations. Exposure to environmental BPA would decrease sperm concentration and sperm swing characteristics (ALH and MAD), and increase sperm velocity ratios (LIN, STR and WOB), which might mediate further effects on impaired male fecundity.
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Affiliation(s)
- Honglei Ji
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Maohua Miao
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Hong Liang
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Huijuan Shi
- NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Dasheng Ruan
- National Chemical Low Carbon Technology and Engineering Center, Kunshan, Jiangsu, China
| | - Yongbo Li
- Population and Family Planning Institute of Guizhou Province, Guiyang, Guizhou, China
| | - Jian Wang
- NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China
| | - Wei Yuan
- Department of Epidemiology and Social Science, NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai, China.
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13
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Dou X, Gao J, Gao P, Tang D, Peng D, Mao J, Huang Z, Chen P, Chen H, Ke S, Liang C, Zhang X. Association between RNA-binding protein Ptbp2 and germ cell injury in an experimentally-induced unilateral cryptorchidism murine model. PLoS One 2017; 12:e0186654. [PMID: 29045475 PMCID: PMC5646856 DOI: 10.1371/journal.pone.0186654] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Accepted: 10/03/2017] [Indexed: 01/06/2023] Open
Abstract
RNA binding protein polypyrimidine tract binding protein 2 (Ptbp2) as a key alternative splicing regulator for male germ cell development is well established. However, its expression levels and role in cryptorchidism testes tissues has not been explored. Additionally, the molecular mechanism of heat stress impacts the correct proliferation and differentiation of germ cells is unclear. To investigate whether changes in Ptbp2 expression are correlated with heat stress-induced germ cell injury in testicular tissue, we used a murine model of intraperitoneal cryptorchidism with surgical operation. Here we present compelling evidence that germ cells are severely damaged in mice with unilateral cryptorchidism, with non-obstructive azoospermia. And the Ptbp2 and Pgk2 mRNA levels were significantly decreased in parallel, leading us to conclude that the negative correlation between Ptbp2 levels and germ cell injury in unilateral cryptorchidism murine model. We hypothesize that Ptbp2 is susceptible to heat stress and its disruption has resulted in stability decline of germ cell transcripts Pgk2 mRNA, which consequently lead to germ cell injury in cryptorchidism testes. Thus, we confirm that Ptbp2 is an essential factor in heat stress-induced sperm cell injury and non-obstructive azoospermia.
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Affiliation(s)
- Xianming Dou
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jingjing Gao
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Pan Gao
- Department of Urology, the Second Affiliated Hospital of Wannan Medical College, Wuhu, Anhui, China
| | - Dongdong Tang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Dangwei Peng
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jun Mao
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Zhenyu Huang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Peng Chen
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - He Chen
- Department of Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Shengwei Ke
- Department of Cell and Developmental Biology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Chaozhao Liang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Xiansheng Zhang
- Department of Urology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- * E-mail:
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14
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Quan C, Wang C, Duan P, Huang W, Chen W, Tang S, Yang K. Bisphenol a induces autophagy and apoptosis concurrently involving the Akt/mTOR pathway in testes of pubertal SD rats. ENVIRONMENTAL TOXICOLOGY 2017; 32:1977-1989. [PMID: 27539358 DOI: 10.1002/tox.22339] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 08/03/2016] [Accepted: 08/08/2016] [Indexed: 06/06/2023]
Abstract
Bisphenol A (BPA), a typical endocrine disrupting chemical (EDC), has been proven to cause male reproductive toxicity. However, the precise mechanisms of this effect are still unclear. Puberty is a crucial period of reproductive development, and adolescents are more susceptible to xenobiotics. This research was designed to explore the mechanism of BPA toxicity on pubertal male reproduction. Rats were exposed to 0, 2, 10, 50 mg kg-1 bw BPA, then the levels of sex hormones, oxidative stress, and semen quality were detected. HE staining, TUNEL assay and transmission electron microscopy were used to investigate the morphological changes, apoptosis, and autophagy in testes, respectively. Expressions of relevant genes and proteins were measured by RT-PCR, western blotting, and immunohistochemical staining. The results indicated that BPA exposure led to oxidative stress and endocrine disorders in pubertal male SD rats, caused apoptosis and autophagy in testes, and then damaged spermatogenesis ultimately. The Akt pathway was activated and the mTOR pathway was inhibited in the process. Taken together, BPA induced apoptosis and autophagy concurrently in pubertal testes, and this added a new layer to our understanding on male reproductive toxicity of BPA. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1977-1989, 2017.
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Affiliation(s)
- Chao Quan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Can Wang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
- Infectious Diseases Prevention and Treatment Department, Hanyang Center for Disease Control and Prevention, Wuhan, Hubei, China
| | - Peng Duan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Wenting Huang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Wei Chen
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Sha Tang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Kedi Yang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
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15
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Quan C, Wang C, Duan P, Huang W, Yang K. Prenatal bisphenol a exposure leads to reproductive hazards on male offspring via the Akt/mTOR and mitochondrial apoptosis pathways. ENVIRONMENTAL TOXICOLOGY 2017; 32:1007-1023. [PMID: 27296223 DOI: 10.1002/tox.22300] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/14/2016] [Accepted: 05/21/2016] [Indexed: 05/10/2023]
Abstract
BACKGROUND Bisphenol A (BPA) exposure is ubiquitous, and in laboratory animals and humans, exposure has been associated with male spermatogenesis dysfunction. However, it is largely unknown if this association has a fetal origin. OBJECTIVE The aim of this research is to explore the mechanism whereby prenatal BPA exposure exerts its reproductive toxicities on spermatogenesis in male offspring. METHODS We fed pregnant SD rats BPA at doses ranging from 1 to 100 mg/kg body weight during gestation days 14-21. The male offspring were euthanized at postnatal day 21, and the levels of sex hormones and reactive oxygen species (ROS), expressions of proteins and genes in the Akt/mTOR, and mitochondrial apoptosis pathways were detected. Several closely linked autophagy indexes were also measured incidentally. Additionally, semen quality of adult offspring was tested at the end of the study. RESULTS The results revealed that prenatal BPA exposure can cause endocrine disruption and oxidative stress in male offspring, leading to inhibition of spermatogenesis by suppressing the Akt/mTOR pathway and activating the mitochondrial apoptosis pathway. CONCLUSIONS These preliminary results indicate noteworthy and far-reaching effects of BPA on the reproductive system of male offspring. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1007-1023, 2017.
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Affiliation(s)
- Chao Quan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - Can Wang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
- Hanyang Center for Disease Control and Prevention, Wuhan, Hubei, China
| | - Peng Duan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - WenTing Huang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - Kedi Yang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
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16
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Olivares P, Orellana P, Guerra G, Peredo-Parada M, Chavez V, Ramirez A, Parodi J. Water contaminated with Didymosphenia geminata generates changes in Salmo salar spermatozoa activation times. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2015; 163:102-108. [PMID: 25885475 DOI: 10.1016/j.aquatox.2015.03.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 03/26/2015] [Accepted: 03/28/2015] [Indexed: 06/04/2023]
Abstract
Didimosphenia geminata ("didymo"), has become a powerful and devastating river plague in Chile. A system was developed in D. geminata channels with the purpose evaluating the effects of water polluted with didymo on the activation of Atlantic salmon (Salmo salar) spermatozoa. Results indicate that semen, when activated with uncontaminated river water had an average time of 60±21s. When using Powermilt, (a commercial activator), times of 240±21s are achieved, while rivers contaminated with D. geminata achieve a motility time of 30±12s. Interestingly enough, the kinetic parameters of VSL, VCL and VAP showed no significant changes under all of the conditions. Furthermore, the presence of D. geminata reduces activation time of the samples as the cells age, indicating increased effects in spermatozoa that are conserved for more than 5 days. D. geminata has antioxidant content, represented by polyphenols; 200ppm of polyphenol were obtained in this study per 10g of microalgae. Spermatozoa exposed to these extracts showed a reduction in mobility time in a dose dependent manner, showing an IC50 of 15ppm. The results suggest an effect on spermatozoa activation, possibly due to the release of polyphenols present in contaminated rivers, facilitating the alteration of sperm motility times, without affecting the viability or kinetics of the cells. These findings have important implications for current policy regarding the control of the algae. Current control measures focus on the number of visible species, and not on the compounds that they release, which this study shows, also have a problematic effect on salmon production.
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Affiliation(s)
- Pamela Olivares
- Laboratorio Fisiología de la Reproducción, Escuela de Medicina Veterinaria, Núcleo de Investigación en Producción Alimentaria, Facultad de Recursos Naturales, Universidad Católica de Temuco, Chile
| | - Paola Orellana
- Laboratorio Fisiología de la Reproducción, Escuela de Medicina Veterinaria, Núcleo de Investigación en Producción Alimentaria, Facultad de Recursos Naturales, Universidad Católica de Temuco, Chile
| | - Guillermo Guerra
- Laboratorio Fisiología de la Reproducción, Escuela de Medicina Veterinaria, Núcleo de Investigación en Producción Alimentaria, Facultad de Recursos Naturales, Universidad Católica de Temuco, Chile
| | - Matías Peredo-Parada
- Departamento de Ingeniería en Obras Civiles, Universidad de Santiago de Chile, Chile; Plataforma de Investigación en Ecohidrología y Ecohidráulica, EcoHyd Ltda, Chile
| | - Viviana Chavez
- Laboratorio de Investigación y Educación, Tonalli Ltda, Chile
| | - Alfredo Ramirez
- Laboratorio de Criobiología y Análisis de Funcionalidad Espermática. Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Jorge Parodi
- Laboratorio Fisiología de la Reproducción, Escuela de Medicina Veterinaria, Núcleo de Investigación en Producción Alimentaria, Facultad de Recursos Naturales, Universidad Católica de Temuco, Chile.
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17
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Accu-Beads as a quality control measure for manual and automated methods of measuring sperm concentration-an observational study. J Assist Reprod Genet 2013; 31:25-33. [PMID: 24174299 DOI: 10.1007/s10815-013-0107-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 09/24/2013] [Indexed: 10/26/2022] Open
Abstract
PURPOSE To determine the precision and accuracy of Accu-Beads and their utility as a quality control product for manual and automated measurements of sperm concentration. METHODS This observational study was performed at an Assisted Reproductive Technology laboratory in a tertiary-care, university hospital. To simulate sperm concentration, bead concentrations were measured with the use of a manual and an automated method. RESULTS The manual counts did not vary significantly from the automated counts regardless of the concentration. However, the counts did vary between lots of low concentration of Accu-Beads and between the two different types of fixed counting chambers. The two bead concentrations used in this study were below the 95 % confidence interval for the values listed by the manufacturer. CONCLUSION(S) In our laboratory, Accu-Beads met enough of the requirements of a good control material to be acceptable for daily quality control use, especially if we set our own ranges of acceptability for each vial of Accu-Beads. It is necessary to evaluate each new lot of Accu-Beads when they are received and again if they are used with a different counting chamber.
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18
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Lu JC, Huang YF, Lü NQ. Computer-aided sperm analysis: past, present and future. Andrologia 2013; 46:329-38. [PMID: 23550608 DOI: 10.1111/and.12093] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/29/2013] [Indexed: 11/30/2022] Open
Affiliation(s)
- J. C. Lu
- Department of Laboratory Science; Nanjing Hospital; Jiangsu Corps; The Armed Police Force; PLA; Nanjing China
| | - Y. F. Huang
- Institute of Clinical Laboratory Medicine; Jinling Hospital; Nanjing China
| | - N. Q. Lü
- Jiangsu Family Planning Research Institute; Nanjing China
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