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Kaiyal RS, Karna KK, Kuroda S, Sgayer I, Shlush E, Vij SC, Lundy SD, Cannarella R. Sperm chromatin dispersion assay reliability and assisted reproductive technology outcomes: Systematic review and meta-analysis. Andrology 2024. [PMID: 39132969 DOI: 10.1111/andr.13725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 07/23/2024] [Accepted: 07/25/2024] [Indexed: 08/13/2024]
Abstract
OBJECTIVE Elevated sperm DNA fragmentation has potential implications for semen quality and fertility. The commonly used sperm chromatin dispersion test offers an indirect estimation but has limitations in terms of bias and variability. This study aimed to assess the reliability of the sperm chromatin dispersion assay for predicting assisted reproductive technology outcomes. MATERIALS AND METHODS This systematic review included studies published until December 2023 that adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. PubMed/MEDLINE, Scopus, and Google Scholar databases were searched. Various assisted reproductive technology outcomes in patients with high (≥ 30%) versus low (< 30%) sperm DNA fragmentation were compared using a sperm chromatin dispersion assay and including a sub-analysis of intracytoplasmic sperm injection versus in vitro fertilization. A comprehensive meta-analysis software facilitated quantitative analysis with statistical comparisons between cases and controls. Interstudy heterogeneity was assessed, and sensitivity and publication bias tests were performed. RESULTS Of the 199 abstracts assessed, 64 full-text articles were screened, and 44 articles were qualitatively synthesized. Fourteen articles representing 5346 participants were quantitatively analyzed. Using the sperm chromatin dispersion assay, elevated sperm DNA fragmentation was associated with lower fertilization and embryo cleavage rates. Notably, high sperm DNA fragmentation levels did not affect the clinical pregnancy, implantation, miscarriage, or live birth outcomes. Sub-analysis revealed lower fertilization, embryo cleavage, clinical pregnancy, live birth rates, and higher miscarriage rates in the intracytoplasmic sperm injection subgroup only. CONCLUSIONS The sperm chromatin dispersion assay did not show significant differences in pregnancy or live birth rates between the high- and low-sperm DNA fragmentation groups. Noteworthy, high sperm DNA fragmentation was associated with worse assisted reproductive technology outcomes in the intracytoplasmic sperm injection group. Given the current quality of the evidence, affected by the experimental design and the absence of correction for female factors of infertility, clinicians should be wary of the assay's limited predictive power for pregnancy and live birth outcomes.
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Affiliation(s)
- Raneen Sawaid Kaiyal
- Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Keshab Kumar Karna
- Department of Molecular Cell and Cancer Biology, Umass Chan Medical School, Worcester, Massachusetts, USA
| | - Shinnosuke Kuroda
- Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Inshirah Sgayer
- Department of Obstetrics and Gynecology, Galilee Medical Center, Nahariya, Israel
- Azrieli Faculty of Medicine, Bar Ilan University, Safed, Israel
| | - Ekaterina Shlush
- Department of Obstetrics and Gynecology, Galilee Medical Center, Nahariya, Israel
- Azrieli Faculty of Medicine, Bar Ilan University, Safed, Israel
| | - Sarah C Vij
- Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Scott D Lundy
- Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Rossella Cannarella
- Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
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Verón GL, Manjon AA, Bello R, Catalano D, Arévalo L, Santiago J, Vazquez-Levin MH. A 2-step remote TUNEL approach for sperm DNA fragmentation assessment. Analysis in donors and patients. Eur J Obstet Gynecol Reprod Biol 2024; 299:231-239. [PMID: 38905966 DOI: 10.1016/j.ejogrb.2024.06.018] [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: 01/26/2024] [Revised: 05/06/2024] [Accepted: 06/08/2024] [Indexed: 06/23/2024]
Abstract
OBJECTIVES Infertility is a disease of the male or female reproductive systems. Male reproductive workup is based on routine semen analysis, although of limited value. The 2021 WHO Manual incorporated Sperm DNA Fragmentation (SDF) assessment, and highlighted the need for individual laboratories to define suitable thresholds. This study aimed to present an alternative to address this issue, determine an SDF cut-off value with fertile donors, and characterize SDF in a patient cohort and their relationship with semen parameters. STUDY DESIGN A service unit was established to remotely perform TUNEL assay in a 2 step-process. Semen samples were received at andrology laboratories, subjected to routine semen analysis (WHO, 2010), partially processed and transported to the service unit for SDF evaluation. Using this setting, studies were done in fertile donors (n = 15) to define the cut-off value, and in men undergoing infertility workup (n = 318). RESULTS A cut-off value of 9.17 % was determined with the fertile donor cohort. With this cut-off, a 64.46 % abnormal SDF incidence was determined in the patient cohort. SDF negatively correlated with sperm number, vitality and motility, and positively with abnormal morphology and male age (P < 0.05). TUNEL-positive cases depicted lower sperm quality and higher male age (P < 0.05). A similar abnormal SDF incidence was determined among patients with semen abnormalities. Asthenozoospermic and ≥40 years patient samples depicted higher (P < 0.05) SDF than those of the general population. SDF incidence was also high in normozoospermic patients. CONCLUSIONS Using a 2-step remote approach with a standardized procedure and an SDF cut-off value established with fertile donors, high SDF incidence in semen samples depicting normal and abnormal quality were identified in men consulting for infertility, highlighting the relevance of its evaluation as part of the male fertility workup.
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Affiliation(s)
- Gustavo Luis Verón
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Ania Antonella Manjon
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Ricardo Bello
- Universidad de Tres de Febrero. Sáenz Peña, Buenos Aires, Argentina.
| | - Débora Catalano
- Centro de Diagnóstico Enrique Rossi (CDRossi), Buenos Aires, Argentina.
| | | | | | - Mónica Hebe Vazquez-Levin
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
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3
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Robertson MJ, Chambers C, Spanner EA, de Graaf SP, Rickard JP. The Assessment of Sperm DNA Integrity: Implications for Assisted Reproductive Technology Fertility Outcomes across Livestock Species. BIOLOGY 2024; 13:539. [PMID: 39056730 PMCID: PMC11273975 DOI: 10.3390/biology13070539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 07/13/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024]
Abstract
Sperm DNA integrity is increasingly considered a useful measure of semen quality in mammalian reproduction. However, the definition of DNA integrity, the ideal means by which it should be measured, and its predictive value for fertility remain a topic of much discussion. With an emphasis on livestock species, this review discusses the assays that have been developed to measure DNA integrity as well as their correlation with in vitro and in vivo fertility.
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Affiliation(s)
| | | | | | | | - Jessica P. Rickard
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW 2006, Australia; (M.J.R.); (S.P.d.G.)
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Podgrajsek R, Bolha L, Pungert T, Pizem J, Jazbec K, Malicev E, Stimpfel M. Effects of Slow Freezing and Vitrification of Human Semen on Post-Thaw Semen Quality and miRNA Expression. Int J Mol Sci 2024; 25:4157. [PMID: 38673743 PMCID: PMC11050687 DOI: 10.3390/ijms25084157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Semen cryopreservation has played an important role in medically assisted reproduction for decades. In addition to preserving male fertility, it is sometimes used for overcoming logistical issues. Despite its proven clinical usability and safety, there is a lack of knowledge of how it affects spermatozoa at the molecular level, especially in terms of non-coding RNAs. Therefore, we conducted this study, where we compared slow freezing and vitrification of good- and poor-quality human semen samples by analyzing conventional sperm quality parameters, performing functional tests and analyzing the expression of miRNAs. The results revealed that cryopreservation of normozoospermic samples does not alter the maturity of spermatozoa (protamine staining, hyaluronan binding), although cryopreservation can increase sperm DNA fragmentation and lower motility. On a molecular level, we revealed that in both types of cryopreservation, miRNAs from spermatozoa are significantly overexpressed compared to those in the native semen of normozoospermic patients, but in oligozoospermic samples, this effect is observed only after vitrification. Moreover, we show that expression of selected miRNAs is mostly overexpressed in native oligozoospermic samples compared to normozoospermic samples. Conversely, when vitrified normozoospermic and oligozoospermic samples were compared, we determined that only miR-99b-5p was significantly overexpressed in oligozoospermic sperm samples, and when comparing slow freezing, only miR-15b-5p and miR-34b-3p were significantly under-expressed in oligozoospermic sperm samples. Therefore, our results imply that cryopreservation of normozoospermic sperm samples can modulate miRNA expression profiles in spermatozoa to become comparable to those in oligozoospermic samples.
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Affiliation(s)
- Rebeka Podgrajsek
- Department of Human Reproduction, Division of Obstetrics and Gynaecology, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia; (R.P.)
| | - Luka Bolha
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (L.B.); (J.P.)
| | - Tjasa Pungert
- Department of Human Reproduction, Division of Obstetrics and Gynaecology, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia; (R.P.)
| | - Joze Pizem
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (L.B.); (J.P.)
| | - Katerina Jazbec
- Blood Transfusion Centre of Slovenia, Slajmerjeva 6, 1000 Ljubljana, Slovenia; (K.J.); (E.M.)
| | - Elvira Malicev
- Blood Transfusion Centre of Slovenia, Slajmerjeva 6, 1000 Ljubljana, Slovenia; (K.J.); (E.M.)
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva ulica 101, 1000 Ljubljana, Slovenia
| | - Martin Stimpfel
- Department of Human Reproduction, Division of Obstetrics and Gynaecology, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia; (R.P.)
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
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5
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Sharma A, Papanikolaou N, Abou Sherif S, Dimakopolou A, Thaventhiran T, Go C, Holtermann Entwistle O, Brown A, Luo R, Jha R, Prakash A, Khalifa D, Lewis H, Ramaraju S, Leeds AR, Chahal H, Purkayastha S, Henkel R, Minhas S, Frost G, Dhillo WS, Jayasena CN. Improvements in Sperm Motility Following Low- or High-Intensity Dietary Interventions in Men With Obesity. J Clin Endocrinol Metab 2024; 109:449-460. [PMID: 37656983 PMCID: PMC10795917 DOI: 10.1210/clinem/dgad523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 09/03/2023]
Abstract
INTRODUCTION Obesity increases risks of male infertility, but bariatric surgery does not improve semen quality. Recent uncontrolled studies suggest that a low-energy diet (LED) improves semen quality. Further evaluation within a randomized, controlled setting is warranted. METHODS Men with obesity (18-60 years) with normal sperm concentration (normal count) (n = 24) or oligozoospermia (n = 43) were randomized 1:1 to either 800 kcal/day LED for 16 weeks or control, brief dietary intervention (BDI) with 16 weeks' observation. Semen parameters were compared at baseline and 16 weeks. RESULTS Mean age of men with normal count was 39.4 ± 6.4 in BDI and 40.2 ± 9.6 years in the LED group. Mean age of men with oligozoospermia was 39.5 ± 7.5 in BDI and 37.7 ± 6.6 years in the LED group. LED caused more weight loss than BDI in men with normal count (14.4 vs 6.3 kg; P < .001) and men with oligozoospermia (17.6 vs 1.8 kg; P < .001). Compared with baseline, in men with normal count total motility (TM) increased 48 ± 17% to 60 ± 10% (P < .05) after LED, and 52 ± 8% to 61 ± 6% (P < .0001) after BDI; progressive motility (PM) increased 41 ± 16% to 53 ± 10% (P < .05) after LED, and 45 ± 8% to 54 ± 65% (P < .001) after BDI. In men with oligozoospermia compared with baseline, TM increased 35% [26] to 52% [16] (P < .05) after LED, and 43% [28] to 50% [23] (P = .0587) after BDI; PM increased 29% [23] to 46% [18] (P < .05) after LED, and 33% [25] to 44% [25] (P < .05) after BDI. No differences in postintervention TM or PM were observed between LED and BDI groups in men with normal count or oligozoospermia. CONCLUSION LED or BDI may be sufficient to improve sperm motility in men with obesity. The effects of paternal dietary intervention on fertility outcomes requires investigation.
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Affiliation(s)
- Aditi Sharma
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Nikoleta Papanikolaou
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Sara Abou Sherif
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Anastasia Dimakopolou
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Thilipan Thaventhiran
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Cara Go
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | | | - Adrian Brown
- Centre for Obesity Research, University College London, London, UK
| | - Rong Luo
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Rama Jha
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Anavi Prakash
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Dalia Khalifa
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Hannah Lewis
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Sruthi Ramaraju
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Anthony R Leeds
- Clinical Research Unit, Parker Institute, Frederiksberg Hospital, Copenhagen, Denmark
| | - Harvinder Chahal
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Sanjay Purkayastha
- Department of General and Bariatric Surgery, Imperial College Healthcare NHS Trust, St. Mary's Hospital, London, UK
| | - Ralf Henkel
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Sukhbinder Minhas
- Department of Urology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, Fulham Palace Road, Hammersmith, London, UK
| | - Gary Frost
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Waljit S Dhillo
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Channa N Jayasena
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
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6
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Nguyen ST, Edo A, Nagahara M, Otoi T, Taniguchi M, Takagi M. Selection of spermatozoa with high motility and quality from bovine frozen-thawed semen using the centrifuge-free device. Anim Reprod Sci 2024; 260:107386. [PMID: 38056176 DOI: 10.1016/j.anireprosci.2023.107386] [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: 09/21/2023] [Accepted: 11/25/2023] [Indexed: 12/08/2023]
Abstract
This study aimed to assess the potential of the centrifuge-free commercial device (MIGLIS®) in selecting functional frozen-thawed bovine sperm by migration-sedimentation, its effect on embryo development, and compare the potential with that of centrifugation-based techniques, including washing and Percoll density gradient centrifugation (DGC). In experiment 1, different dilutions (1.5×, 2×, and 3×) of frozen-thawed spermatozoa were assessed to identify the adequate one for the MIGLIS method. In experiment 2, the recovery rates, quality, and reactive oxygen species (ROS) concentrations of the spermatozoa selected using MIGLIS, washing, and Percoll DGC were compared. In experiment 3, the resultant in vitro fertilised embryos from spermatozoa selected using the three methods were evaluated for blastocyst formation rates and intracellular ROS concentrations at the 2-4 cell stage. The intracellular ROS concentrations were investigated using 2', 7'-dichlorodihydrofluorescein diacetate staining. Using the MIGLIS device, significantly more spermatozoa were recovered at 2× dilution compared with the other dilution ratio, but the motility was not affected by the dilution ratio. On the selection of spermatozoa using the three methods, employing MIGLIS decreased the recovery rates. However, the MIGLIS method increased motility, viability, and acrosome integrity rates compared to those in spermatozoa from the other methods. The ROS concentration of spermatozoa in the MIGLIS method was significantly lower than that in the washing method. Nevertheless, blastocyst formation rates were similar among the three methods, but the ROS concentration of early-stage embryos produced using MIGLIS was significantly lower than those produced using Percoll DGC. In conclusion, the MIGLIS method has the potential to select functional, high-quality frozen-thawed bovine spermatozoa.
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Affiliation(s)
- Suong T Nguyen
- Joint Graduate School of Veterinary Sciences, Yamaguchi University, Yamaguchi, Japan
| | - Ayane Edo
- Laboratory of Theriogenology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Megumi Nagahara
- Faculty of Bioscience and Bioindustry, Bio-Innovation Research Center, Tokushima University, Tokushima, Japan
| | - Takeshige Otoi
- Faculty of Bioscience and Bioindustry, Bio-Innovation Research Center, Tokushima University, Tokushima, Japan
| | - Masayasu Taniguchi
- Joint Graduate School of Veterinary Sciences, Yamaguchi University, Yamaguchi, Japan; Laboratory of Theriogenology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan.
| | - Mitsuhiro Takagi
- Joint Graduate School of Veterinary Sciences, Yamaguchi University, Yamaguchi, Japan; Laboratory of Theriogenology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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Zhou Y, Wang J, Zhuo L, Pei C, Jia S, Tian J, Wang H, Yan B, Ma L. Fluorescent enzyme-based biosensor for sensitive analysis of DNA damage in cryopreserved sperm. Cryobiology 2023; 113:104591. [PMID: 37804950 DOI: 10.1016/j.cryobiol.2023.104591] [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: 08/02/2023] [Revised: 09/12/2023] [Accepted: 10/04/2023] [Indexed: 10/09/2023]
Abstract
The freeze-thaw process can induce irreversible structural and functional changes in human sperm, particularly sperm DNA damage. Selecting a more accurate and sensitive detection method for evaluating sperm DNA integrity is crucial. To accurately assess sperm DNA integrity following the freeze-thaw process and significantly improve the clinical and scientific utilization of cryopreserved sperm. In this study, we utilized a novel fluorescent biosensor, assisted by terminal deoxynucleotidyl transferase (TdT) and Endonuclease IV, to detect DNA breakpoints during sperm cryopreservation. We evaluated the biosensor's performance by comparing it with the conventional DNA fragmentation index (DFI) measured using sperm chromatin structure analysis (SCSA). The cryopreserved group exhibited a significantly higher sperm DFI compared to the fresh group. No significant difference was observed between the antioxidant group and the cryopreserved group. However, the new method revealed a significant reduction in the number of DNA breakpoints in the antioxidant group compared to the cryopreserved group. The novel biosensor demonstrated superior accuracy and effectiveness in assessing sperm DNA integrity during cryopreservation compared to the conventional SCSA method. We believe that the biosensor holds significant potential for widespread use in the field of reproductive medicine.
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Affiliation(s)
- Yue Zhou
- Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Juan Wang
- Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China; Department of Pathology, Ningxia Medical University, Yinchuan, 750001, PR China
| | - Lifan Zhuo
- Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Chengbin Pei
- Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Shaotong Jia
- Reproductive Center, General Hospital of Ningxia Medical University, Yinchuan, 750004, PR China
| | - Jia Tian
- Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Honghong Wang
- Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Bei Yan
- Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China.
| | - Lianghong Ma
- Ningxia Human Sperm Bank, Institute of Medical Sciences, General Hospital of Ningxia Medical University, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China.
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Kuroda S, Karna KK, Kaiyal RS, Cannarella R, Lundy SD, Vij SC, Agarwal A. Novel sperm chromatin dispersion test with artificial intelligence-aided halo evaluation: A comparison study with existing modalities. Andrology 2023; 11:1581-1592. [PMID: 37002661 DOI: 10.1111/andr.13436] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/17/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023]
Abstract
BACKGROUND Sperm chromatin dispersion test is a common and inexpensive technique to assess sperm DNA fragmentation, but its subjectivity in assessing a small number of spermatozoa is a disadvantage. OBJECTIVES To study the efficacy of a new sperm chromatin dispersion test kit (R10) combined with an artificial intelligence-aided halo-evaluation platform (X12) and compare the results to those of existing sperm DNA fragmentation testing methods. MATERIALS AND METHODS Semen samples from normozoospermic donors (n = 10) and infertile men with abnormal semen parameters (n = 10) were enrolled. DNA fragmentation indices were examined by multiple assays, including R10, Halosperm G2 (G2), sperm chromatin structure assay, and terminal deoxynucleotidyl transferase deoxynucleotidyl transferase nick end labeling. In R10 assay, the DNA fragmentation indices were obtained both manually (manual R10) and by X12 (AI-R10). The obtained DNA fragmentation indices were analyzed by agreement analyses. RESULTS The DNA fragmentation indices obtained by manual R10 and those obtained by AI-R10 showed a strong significant correlation (r = 0.97, p < 0.001) and agreement. The number of spermatozoa evaluated by AI-R10 was 2078 (680-5831). The DNA fragmentation indices obtained by manual R10 and AI-R10 both correlated with those of G2 (r = 0.90, p < 0.001; r = 0.88, p < 0.001). Between the AI-R10 and G2 results, Passing-Bablok regression showed no systematic or proportional difference, and Bland-Altman plots revealed overall agreement and a mean bias of 6.3% with an SD of 6.9% (95% limit of agreement: -7.2% to 19.9%). AI-R10 and sperm chromatin structure assays showed systematic differences with a mean bias of -1.9%, while AI-R10 and terminal deoxynucleotidyl transferase deoxynucleotidyl transferase nick end labeling revealed proportional differences with a mean bias of -10.7%. CONCLUSIONS The novel sperm chromatin dispersion kit and artificial intelligence-aided platform demonstrated significant correlation and agreement with existing sperm chromatin dispersion methods by assessing greater number of spermatozoa. This technique has the potential to provide a rapid and accurate assessment of sperm DNA fragmentation without technical expertise or flow cytometry.
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Affiliation(s)
- Shinnosuke Kuroda
- Department of Urology, Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Keshab Kumar Karna
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Raneen Sawaid Kaiyal
- Department of Urology, Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Rossella Cannarella
- Department of Urology, Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Scott D Lundy
- Department of Urology, Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Sarah C Vij
- Department of Urology, Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Ashok Agarwal
- Global Andrology Forum, American Center for Reproductive Medicine, Moreland Hills, Ohio, USA
- Cleveland Clinic Foundation, Cleveland, Ohio, USA
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9
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Busnelli A, Garolla A, Di Credico E, D'Ippolito S, Merola AM, Milardi D, Pontecorvi A, Scambia G, Di Simone N. Sperm DNA fragmentation and idiopathic recurrent pregnancy loss: Results from a multicenter case-control study. Andrology 2023; 11:1673-1681. [PMID: 36693210 DOI: 10.1111/andr.13395] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/25/2023]
Abstract
BACKGROUND Sperm DNA fragmentation was hypothesized to have a role in the pathogenesis of recurrent pregnancy loss. Unfortunately, the quality of already published evidence is low. OBJECTIVES To investigate the association between sperm DNA fragmentation and idiopathic recurrent pregnancy loss by limiting, as much as possible, the interference of confounding factors. MATERIALS AND METHODS This was a retrospective multicenter case-control study conducted in two Italian University Hospitals (i.e., Policlinico Gemelli, Rome and Humanitas S. Pio X, Milan) from July 2020 to March 2022. Cases were men belonging to couples affected by first trimester idiopathic recurrent pregnancy loss, defined as the previous loss of two or more pregnancies. Two control groups were selected: (i) men belonging to couples with proven fertility (i.e., at least two previous full-term pregnancies) (control group A); (ii) men belonging to couples with proven infertility (i.e., the failure to achieve a pregnancy after 12 months or more of regular unprotected sexual intercourse) (control group B). The sperm DNA fragmentation index was measured by the terminal deoxynucleotidyl transferase dUTP nick end labeling assay. RESULTS We included 74 cases, 37 men with proven fertility (control group A) and 100 men belonging to infertile couples (control group B). The median sperm DNA fragmentation index was significantly lower in control group A (17%, interquartile range: 14.3%-20.6%) compared to both case group (24.5%, interquartile range: 17%-32%; p < 0.0001) and control group B (24%, interquartile range: 18.9%-30%; p = 0.001). The rate of subjects with sperm DNA fragmentation index greater than 30% was significantly higher in both case groups (28%, 95% confidence interval [18%-40%]) and control group B (26%, 95% confidence interval [18%, 36%]) compared to control group A (0%, 95% confidence interval [0%-10%]) (p < 0.001). Multivariate regression models yielded a significant association between sperm DNA fragmentation index and recurrent pregnancy loss (adjusted odds ratio 1.13, 95% confidence interval [1.04-1.23], p = 0.006), but failed to show an association between sperm DNA fragmentation index and infertility (adjusted odds ratio 1.13, 95% CI [1-1.29], p = 0.05). CONCLUSIONS Men within couples affected by recurrent pregnancy loss or infertility had a significantly higher rate of sperm DNA fragmentation compared to fertile controls. However, after adjusting for covariates, sperm DNA fragmentation index was associated only with recurrent pregnancy loss.
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Affiliation(s)
- Andrea Busnelli
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Andrea Garolla
- Unit of Andrology and Reproductive Medicine & Centre for Male Gamete Cryopreservation, Department of Medicine, University of Padova, Padua, Italy
| | - Elena Di Credico
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Silvia D'Ippolito
- Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Anna Maria Merola
- Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Domenico Milardi
- Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
- International Scientific Institute "Paul VI," Catholic University, Rome, Italy
- Unità Operativa Complessa (UOC) Endocrinology and Diabetology, Fondazione Policlinico Universitario A. Gemelli, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Rome, Italy
| | - Alfredo Pontecorvi
- Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
- International Scientific Institute "Paul VI," Catholic University, Rome, Italy
- Unità Operativa Complessa (UOC) Endocrinology and Diabetology, Fondazione Policlinico Universitario A. Gemelli, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Rome, Italy
| | - Giovanni Scambia
- Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
- Dipartimento di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Nicoletta Di Simone
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
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Jiang LF, Yang M, Meng HW, Jia PC, Du CL, Liu JY, Lv XW, Cheng-Huang, Li J. The effect of hepatic stellate cell derived-IL-11 on hepatocyte injury in hepatic fibrosis. Life Sci 2023; 330:121974. [PMID: 37495078 DOI: 10.1016/j.lfs.2023.121974] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 07/28/2023]
Abstract
AIMS This study aimed to elucidate the role of Interleukin-11 (IL-11) in hepatic fibrosis (HF) and its potential as a therapeutic target for HF treatment. MATERIALS AND METHODS We investigated IL-11 expression in patients with varying degrees of liver injury through ELISA and immunohistochemistry. A CCl4-induced HF mouse model was constructed to study IL-11 expression and cell apoptosis using Western blotting (WB) and other techniques. The expression of IL-11 was silenced using rAAV8 in the mouse model. In vitro stimulation of hepatic stellate cells (LX-2) with TGF-β1, and of LO-2 cells with exogenous IL-11, were performed. Cell supernatants of TGF-β1-stimulated LX-2 were used to culture LO-2 cells, with apoptosis monitored via flow cytometry and WB. KEY FINDINGS Increased IL-11 levels were observed in patients and the HF mouse model, with silencing reducing IL-11 expression. In vitro experiments revealed increased endogenous IL-11 in TGF-β1-stimulated LX-2 cells and an increase in apoptotic index, IL11RA, and gp130 in IL-11-stimulated LO-2 cells. Cell apoptosis was reduced in the siRNA/IL11, siRNA/IL11RA, and anti-IL11 groups. WB and immunohistochemistry results showed upregulated p-JNK, p-ERK, and p-P53 expressions in the CCl4-induced HF mouse model and IL-11-treated LO-2 cells. SIGNIFICANCE Our findings suggest IL-11 enhances LX-2 cell activation and proliferation, and promotes LO-2 cell apoptosis through JNK/ERK signaling pathways. This suggests that targeting IL-11 secretion may serve as a potential therapeutic strategy for HF, providing a foundation for its clinical application in HF treatment.
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Affiliation(s)
- Ling-Feng Jiang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China
| | - Ming Yang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China
| | - Hong-Wu Meng
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China
| | - Peng-Cheng Jia
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China
| | - Chang-Lin Du
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China
| | - Jin-Yu Liu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China
| | - Xiong-Wen Lv
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China.
| | - Cheng-Huang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China.
| | - Jun Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China; Anhui Institute of Innovative Drugs, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei, China.
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11
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Gandara ACP, Drummond-Barbosa D. Chronic exposure to warm temperature causes low sperm abundance and quality in Drosophila melanogaster. Sci Rep 2023; 13:12331. [PMID: 37518578 PMCID: PMC10387475 DOI: 10.1038/s41598-023-39360-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 07/24/2023] [Indexed: 08/01/2023] Open
Abstract
Temperature influences male fertility across organisms; however, how suboptimal temperatures affect adult spermatogenesis remains understudied. In a recent study on Drosophila melanogaster oogenesis, we observed a drastic reduction in the fertility of adult males exposed to warm temperature (29 °C). Here, we show that males become infertile at 29 °C because of low sperm abundance and quality. The low sperm abundance at 29 °C does not stem from reduced germline stem cell or spermatid numbers, as those numbers remain comparable between 29 °C and control 25 °C. Notably, males at cold 18 °C and 29 °C had similarly increased frequencies of spermatid elongation and individualization defects which, considering the high sperm abundance and male fertility measured at 18 °C, indicate that spermatogenesis has a high tolerance for elongation and individualization defects. Interestingly, the abundance of sperm at 29 °C decreases abruptly and with no evidence of apoptosis as they transition into the seminal vesicle near the end of spermatogenesis, pointing to sperm elimination through an unknown mechanism. Finally, sperm from males at 29 °C fertilize eggs less efficiently and do not support embryos past the first stage of embryogenesis, indicating that poor sperm quality is an additional cause of male infertility at 29 °C.
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Affiliation(s)
- Ana Caroline P Gandara
- Department of Genetics, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Morgridge Institute for Research, Madison, WI, 53706, USA
| | - Daniela Drummond-Barbosa
- Department of Genetics, University of Wisconsin-Madison, Madison, WI, 53706, USA.
- Morgridge Institute for Research, Madison, WI, 53706, USA.
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12
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Woźniak P, Kleczka A, Jasik K, Kabała-Dzik A, Dzik R, Stojko J. The Effect of Natural Substances Contained in Bee Products on Prostate Cancer in In Vitro Studies. Molecules 2023; 28:5719. [PMID: 37570691 PMCID: PMC10420981 DOI: 10.3390/molecules28155719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Prostate cancer is a common cancer in men in older age groups. The WHO forecasts an increase in the incidence of prostate cancer in the coming years. Patients may not respond to treatment, and may not tolerate the side effects of chemotherapy. Compounds of natural origin have long been used in the prevention and treatment of cancer. Flavonoids obtained from natural products, e.g., propolis, are compounds with proven antibacterial and antiviral efficacy which modulate the immune response and may be useful as adjuvants in chemotherapy. The main aim of the present study was to evaluate the cytotoxic and pro-apoptotic properties of selected flavonoids on prostate cancer cells of the LNCaP line. The compounds used in this study were CAPE, curcumin (CUR), and quercetin (QUE). Mitochondrial and lysosome metabolism was assessed by the XTT-NR-SRB triple assay as well as by the fluorescent staining techniques. Staining for reactive oxygen species was performed as well. The experiment showed that each of the tested compounds has a cytotoxic effect on the LNCaP cell line. Different types of cell death were induced by the tested compounds. Apoptosis was induced by quercetin, while autophagy-specific changes were observed after using CAPE. Compounds obtained from other bee products have antiproliferative and cytotoxic activity against LNCaP prostate cancer cells.
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Affiliation(s)
- Przemysław Woźniak
- Department of Toxicology and Bioanalysis, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Ostrogórska 30, 41-200 Sosnowiec, Poland; (P.W.); (J.S.)
| | - Anna Kleczka
- Department of Pathology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Ostrogórska 30, 41-200 Sosnowiec, Poland; (A.K.); (K.J.)
| | - Krzysztof Jasik
- Department of Pathology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Ostrogórska 30, 41-200 Sosnowiec, Poland; (A.K.); (K.J.)
| | - Agata Kabała-Dzik
- Department of Pathology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Ostrogórska 30, 41-200 Sosnowiec, Poland; (A.K.); (K.J.)
| | - Radosław Dzik
- Faculty of Biomedical Engineering, Department of Biosensors and Processing of Biomedical Signals, Silesian University of Technology, Roosevelta 40, 41-800 Zabrze, Poland;
| | - Jerzy Stojko
- Department of Toxicology and Bioanalysis, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Ostrogórska 30, 41-200 Sosnowiec, Poland; (P.W.); (J.S.)
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13
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Chatzimeletiou K, Fleva A, Nikolopoulos TT, Markopoulou M, Zervakakou G, Papanikolaou K, Anifandis G, Gianakou A, Grimbizis G. Evaluation of Sperm DNA Fragmentation Using Two Different Methods: TUNEL via Fluorescence Microscopy, and Flow Cytometry. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1313. [PMID: 37512124 PMCID: PMC10384605 DOI: 10.3390/medicina59071313] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/05/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023]
Abstract
Background and Objectives: Sperm DNA fragmentation refers to any break in one or both of the strands of DNA in the head of a sperm. The most widely used methodologies for assessing sperm DNA fragmentation are the sperm chromatin structure assay (SCSA), the sperm chromatin dispersion assay (SCD), the single-cell gel electrophoresis assay (SCGE-comet), and the terminal-deoxynucleotidyl-transferase (TdT)-mediated dUTP nick end labelling (TUNEL) assay. The aim of this study was to compare the efficiency and sensitivity of the analysis of sperm DNA fragmentation using TUNEL via fluorescence microscopy, and flow cytometry. Materials and Methods: Semen samples were collected and analyzed for standard characteristics using light microscopy, and for sperm DNA fragmentation using both TUNEL via fluorescence microscopy, and flow cytometry. Results: There were no significant differences in the values of the sperm DNA fragmentation index (DFI) obtained when the analysis was performed using TUNEL or flow cytometry (p = 0.543). Spearman's correlation analysis revealed a significant negative correlation between sperm motility (%) and sperm DNA fragmentation (p < 0.01), as well as between sperm concentration and sperm DNA fragmentation (p < 0.05). The Mann-Whitney U test showed no significant difference in the DFI among couples with repeated implantation failure (RIF) and miscarriages (p = 0.352). Conclusions: Both methods (TUNEL via fluorescence microscopy, and flow cytometry) have a high efficiency and sensitivity in accurately detecting sperm DNA fragmentation, and can be effectively used to assess male fertility.
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Affiliation(s)
- Katerina Chatzimeletiou
- Unit for Human Reproduction, 1st Department of Obstetrics & Gynaecology, 'Papageorgiou' General Hospital, Aristotle University Medical School, 56403 Thessaloniki, Greece
| | - Alexandra Fleva
- Department of Immunology and Histocompatibility, 'Papageorgiou' General Hospital, 56403 Thessaloniki, Greece
| | - Theodoros-Thomas Nikolopoulos
- Unit for Human Reproduction, 1st Department of Obstetrics & Gynaecology, 'Papageorgiou' General Hospital, Aristotle University Medical School, 56403 Thessaloniki, Greece
| | - Maria Markopoulou
- Department of Immunology and Histocompatibility, 'Papageorgiou' General Hospital, 56403 Thessaloniki, Greece
| | | | | | - George Anifandis
- Department of Obstetrics and Gynecology, School of Health Sciences, Faculty of Medicine, University of Thessaly, 41200 Larisa, Greece
| | - Anastasia Gianakou
- Department of Immunology and Histocompatibility, 'Papageorgiou' General Hospital, 56403 Thessaloniki, Greece
| | - Grigoris Grimbizis
- Unit for Human Reproduction, 1st Department of Obstetrics & Gynaecology, 'Papageorgiou' General Hospital, Aristotle University Medical School, 56403 Thessaloniki, Greece
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14
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Busnelli A, Garolla A, Tersigni C, Parodi V, Inversetti A, Levi-Setti PE, Scambia G, Di Simone N. Sperm human papillomavirus infection and risk of idiopathic recurrent pregnancy loss: insights from a multicenter case-control study. Fertil Steril 2023; 119:410-418. [PMID: 36493870 DOI: 10.1016/j.fertnstert.2022.12.002] [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: 07/15/2022] [Revised: 11/30/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To test the hypothesis claiming an association between human papilloma virus (HPV) sperm infection and idiopathic recurrent pregnancy loss (RPL). DESIGN Multicenter retrospective case-control study. SETTING Three university hospitals. PATIENT(S) Cases included men belonging to couples affected by first trimester idiopathic RPL. Controls included men belonging to couples with proven fertility and no history of pregnancy loss; RPL was defined as the previous loss of 2 or more pregnancies. Couples were defined as "fertile" if they achieved a full-term pregnancy within the year before enrollment in the study. All participants conceived without assistance. MAIN OUTCOME MEASURE(S) The association between HPV DNA sperm infection, as identified using polymerase chain reaction, and RPL. RESULTS The HPV DNA sperm infection was detected in 23 of 117 cases (20%; 95% confidence interval [CI]: 13%, 28%) and in 3 of 84 controls (4%; 95% CI; 1%, 10%) (P<.001). A comparison across baseline characteristics and multiple regression analysis did not identify any potentially confounding factors. Multivariate regression models showed a significant association between HPV DNA sperm infection and RPL (adjusted odds ratio, 7.44; 95% CI: 2.08, 26.58; P=.002 [Model 1]; adjusted odds ratio, 8.96; 95% CI: 2.41, 33.44; P=.001 [Model 2]). CONCLUSIONS The prevalence of HPV sperm infection was significantly higher in couples affected by RPL than in their fertile counterparts. Notably, the semen sample was infected by HPV in approximately 1 out of 5 patients.
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Affiliation(s)
- Andrea Busnelli
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele-Milan, Italy; IRCCS Humanitas Research Hospital, Rozzano-Milan, Italy.
| | - Andrea Garolla
- Unit of Andrology and Reproductive Medicine and Centre for Male Gamete Cryopreservation, Department of Medicine, University of Padova, Padova, Italy
| | - Chiara Tersigni
- Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Vittorio Parodi
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele-Milan, Italy
| | - Annalisa Inversetti
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele-Milan, Italy; IRCCS Humanitas Research Hospital, Rozzano-Milan, Italy
| | - Paolo Emanuele Levi-Setti
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele-Milan, Italy; IRCCS Humanitas Research Hospital, Rozzano-Milan, Italy
| | - Giovanni Scambia
- Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy; Dipartimento di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Nicoletta Di Simone
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele-Milan, Italy; IRCCS Humanitas Research Hospital, Rozzano-Milan, Italy
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Maside C, Recuero S, Salas-Huetos A, Ribas-Maynou J, Yeste M. Animal board invited review: An update on the methods for semen quality evaluation in swine - from farm to the lab. Animal 2023; 17:100720. [PMID: 36801527 DOI: 10.1016/j.animal.2023.100720] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 01/26/2023] Open
Abstract
Pig breeding is mainly conducted through artificial insemination with liquid-stored semen. It is, therefore, crucial to ensure that sperm quality is over the standard thresholds, as reduced sperm motility, morphology or plasma membrane integrity are associated with reduced farrowing rates and litter sizes. This work aims to summarise the methods utilised in farms and research laboratories to evaluate sperm quality in pigs. The conventional spermiogram consists in the assessment of sperm concentration, motility and morphology, which are the most estimated variables in farms. Yet, while the determination of these sperm parameters is enough for farms to prepare seminal doses, other tests, usually carried out in specialised laboratories, may be required when boar studs exhibit a decreased reproductive performance. These methods include the evaluation of functional sperm parameters, such as plasma membrane integrity and fluidity, intracellular levels of calcium and reactive oxygen species, mitochondrial activity, and acrosome integrity, using fluorescent probes and flow cytometry. Furthermore, sperm chromatin condensation and DNA integrity, despite not being routinely assessed, may also help determine the causes of reduced fertilising capacity. Sperm DNA integrity can be evaluated through direct (Comet, transferase deoxynucleotide nick end labelling (TUNEL) and its in situ nick variant) or indirect tests (Sperm Chromatin Structure Assay, Sperm Chromatin Dispersion Test), whereas chromatin condensation can be determined with Chromomycin A3. Considering the high degree of chromatin packaging in pig sperm, which only have protamine 1, growing evidence suggests that complete decondensation of that chromatin is needed before DNA fragmentation through TUNEL or Comet can be examined.
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Affiliation(s)
- Carolina Maside
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain
| | - Sandra Recuero
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain
| | - Albert Salas-Huetos
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States; Consorcio CIBER, M.P., Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), ES-28029 Madrid, Spain
| | - Jordi Ribas-Maynou
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain; Institute for Biogenesis Research, Department of Anatomy, Biochemistry and Physiology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96822, United States
| | - Marc Yeste
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain; Catalan Institution for Research and Advanced Studies (ICREA), ES-08010 Barcelona, Spain.
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Sperm DNA Damage and Its Relevance in Fertility Treatment: A Review of Recent Literature and Current Practice Guidelines. Int J Mol Sci 2023; 24:ijms24021446. [PMID: 36674957 PMCID: PMC9860847 DOI: 10.3390/ijms24021446] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 01/14/2023] Open
Abstract
Sperm deoxyribonucleic acid (DNA) damage has recently emerged as one of the most controversial topics in male reproductive medicine. While level I evidence indicates that abnormal sperm DNA damage has substantial adverse effects on reproductive outcomes (including chance of pregnancy and risk of miscarriage), there is limited consensus on how sperm DNA fragmentation (SDF) testing should be performed and/or interpreted in clinical practice. In this article, we review: (1) how SDF is assessed, (2) cumulative evidence regarding its impact on reproductive outcomes, (3) methods for mitigating high SDF, and (4) the most recent practice guidelines available for clinicians regarding the use and interpretation of SDF testing.
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17
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Adler A, Roth B, Lundy SD, Takeshima T, Yumura Y, Kuroda S. Sperm DNA fragmentation testing in clinical management of reproductive medicine. Reprod Med Biol 2023; 22:e12547. [PMID: 37915974 PMCID: PMC10616814 DOI: 10.1002/rmb2.12547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/26/2023] [Accepted: 10/12/2023] [Indexed: 11/03/2023] Open
Abstract
Background Approximately 8%-12% of couples worldwide face infertility, with infertility of individuals assigned male at birth (AMAB) contributing to at least 50% of cases. Conventional semen analysis commonly used to detect sperm abnormalities is insufficient, as 30% of AMAB patients experiencing infertility show normal results in this test. From a genetic perspective, the assessment of sperm DNA fragmentation (SDF) is important as a parameter of sperm quality. Methods In this narrative study, we review and discuss pathophysiological causes, DNA repair mechanisms, and management of high SDF. We then summarize literature exploring the association between SDF and reproductive outcomes. Main Findings Recent systematic reviews and meta-analyses have revealed a significant association between high SDF in AMAB individuals and adverse reproductive outcomes including embryo development, natural conception, intrauterine insemination, and in vitro fertilization. However, the association with live birth rates and pregnancy rates following intracytoplasmic injection remains inconclusive. The disparities among quantitative assays, inconsistent reference range values, absent high-quality prospective clinical trials, and clinical heterogeneity in AMAB patients with elevated SDF represent the main limitations affecting SDF testing. Conclusion The evaluation and management of SDF plays an important role in a subset of AMAB infertility, but widespread integration into clinical guidelines will require future high-quality clinical trials and assay standardization.
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Affiliation(s)
- Ava Adler
- Glickman Urological & Kidney InstituteCleveland Clinic FoundationClevelandOhioUSA
| | - Bradley Roth
- Glickman Urological & Kidney InstituteCleveland Clinic FoundationClevelandOhioUSA
| | - Scott D. Lundy
- Glickman Urological & Kidney InstituteCleveland Clinic FoundationClevelandOhioUSA
| | - Teppei Takeshima
- Department of Urology, Reproduction CenterYokohama City University Medical CenterYokohamaJapan
| | - Yasushi Yumura
- Department of Urology, Reproduction CenterYokohama City University Medical CenterYokohamaJapan
| | - Shinnosuke Kuroda
- Glickman Urological & Kidney InstituteCleveland Clinic FoundationClevelandOhioUSA
- Department of Urology, Reproduction CenterYokohama City University Medical CenterYokohamaJapan
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18
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Quality of Life Following Pelvic Organ Prolapse Treatments in Women: A Systematic Review and Meta-Analysis. J Clin Med 2022; 11:jcm11237166. [PMID: 36498740 PMCID: PMC9738239 DOI: 10.3390/jcm11237166] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 11/21/2022] [Accepted: 11/25/2022] [Indexed: 12/05/2022] Open
Abstract
Introduction: Quality of life (QoL) improvement is one of the main outcomes in the management of pelvic organ prolapse as a chronic illness in women. This systematic review aimed to investigate the impact of surgical or pessary treatment for pelvic organ prolapse (POP) on quality of life. Methods: Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) was applied. Electronic databases, including PubMed, Scopus, and Web of Science, were searched for original articles that evaluated the QoL before and after surgical interventions or pessary in pelvic organ prolapse from 1 January 2012 until 30 June 2022 with a combination of proper keywords. Included studies were categorized based on interventions, and they were tabulated to summarize the results. Results: Overall, 587 citations were retrieved. Of these, 76 articles were found eligible for final review. Overall, three categories of intervention were identified: vaginal surgeries (47 studies), abdominal surgeries (18 studies), and pessary intervention (11 studies). Almost all interventions were associated with improved quality of life. The results of the meta-analysis showed a significant association between the employment of surgical approach techniques (including vaginal and abdominal surgeries) and the quality of life (Pelvic Floor Distress Inventory (PFDI) (MD: −48.08, 95% CI: −62.34 to −33.77, p-value < 0.01), Pelvic Floor Impact Questionnaire (PFIQ) (MD: −33.41, 95% CI: −43.48 to −23.34, p < 0.01)) and sexual activity of patients with pelvic organ prolapse (Pelvic Organ Prolapse/Urinary Incontinence Sexual Function Questionnaire (PISQ) (MD: 4.84, 95% CI: 1.75 to 7.92, p < 0.01)). Furthermore, narrative synthesis for studies investigating the effect of the pessary approach showed a positive association between the use of this instrument and improvement in the quality of life and sexual activity. Conclusions: The results of our study revealed a significant improvement in the women’s quality of life following abdominal and vaginal reconstructive surgery. The use of pessary was also associated with increased patient quality of life.
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Possible Implications of Bacteriospermia on the Sperm Quality, Oxidative Characteristics, and Seminal Cytokine Network in Normozoospermic Men. Int J Mol Sci 2022; 23:ijms23158678. [PMID: 35955814 PMCID: PMC9369207 DOI: 10.3390/ijms23158678] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/27/2022] [Accepted: 08/02/2022] [Indexed: 02/06/2023] Open
Abstract
This study focused on the identification of bacterial profiles of semen in normozoospermic men and their possible involvement in changes to the sperm structural integrity and functional activity. Furthermore, we studied possible fluctuations of selected cytokines, oxidative markers, and antibacterial proteins as a result of bacterial presence in the ejaculate. Sperm motility was assessed with computer-assisted sperm analysis, while sperm apoptosis, necrosis and acrosome integrity were examined with fluorescent methods. Reactive oxygen species (ROS) generation was quantified via luminometry, sperm DNA fragmentation was evaluated using the TUNEL protocol and chromatin-dispersion test, while the JC-1 assay was applied to evaluate the mitochondrial membrane potential. Cytokine levels were quantified with the biochip assay, whilst selected antibacterial proteins were quantified using the ELISA method. The predominant species identified by the matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry were Staphylococcus hominis, Staphylococcus capitis and Micrococcus luteus. The results revealed that the sperm quality decreased proportionally to the increasing bacterial load and occurrence of conditionally pathogenic bacteria, including Enterococcus faecalis, Staphylococcus aureus and Escherichia coli. Antimicrobial susceptibility tests revealed a substantial resistance of randomly selected bacterial strains to ampicillin, vancomycin, tobramycin, and tetracycline. Furthermore, an increased bacterial quantity in semen was accompanied by elevated levels of pro-inflammatory cytokines, including interleukin-1, interleukin-2, interleukin-6, tumor necrosis factor alpha as well as ROS overproduction and lipid peroxidation of the sperm membranes. Our results suggest that semen quality may be notably affected by the bacterial quantity as well as quality. It seems that bacteriospermia may be associated with inflammatory processes, oxidative stress, sperm structural deterioration, and a subsequent risk for the development of subfertility, even in normozoospermic males.
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20
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Mei C, Ma T. Roles of isometric contraction training in promoting neuroprotection and angiogenesis after stroke in adult rats. Physiol Res 2022; 71:425-438. [PMID: 35616043 DOI: 10.33549/physiolres.934849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
100 rats were randomly divided into a sham-operated group and middle cerebral artery occlusion (MCAO) modeling groups. The sham group after surgery was observed for 14 days. After MCAO, some rats received isometric contraction training (ICT) which was as follows: an atraumatic tourniquet was placed around left or right hind limb to achieve hind limb ischemia for 5 min, followed by 5 min of reperfusion, 4 cycles for one time, once a day, and five days per week. The MCAO modeling groups included the following four groups: i) a group only received MCAO, and was observed for seven days (MCAO-7d), ii) a group only received MCAO, and was observed for 14 days (MCAO-14d), iii) a group, after MCAO, received ICT for seven days (ICT-7d), and iv) a group, after MCAO, received ICT for 14 days (ICT-14d). Brain infarct area, behavioral outcomes, the number of neurons, apoptosis, cerebral edema and cerebral water content were assessed, respectively. The mRNA expression of vascular endothelial growth factor (VEGF) was assayed with RT-PCR, and protein expression of VEGF was quantified with western blot. compared with MCAO controls, cerebral infarction, neurological deficits and neuronal apoptosis were reduced significantly in the ICT groups, while the number of neurons was increased. Moreover, the mRNA expression of VEGF and protein expression of VEGF were enhanced after 1 and 2 weeks of ICT. ICT may promote angiogenesis and neuroprotection after ischemic stroke and this new remodeling method provide a novel strategy for rehabilitation of stroke patients.
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Affiliation(s)
- C Mei
- Pukou Branch of Jiangsu People's Hospital, Nanjing City, Jiangsu Province, P. R. China.
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21
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Çağlayan A, Horsanali MO, Buyrukcu BA. The role of sperm DNA integrity in couples with recurrent implantation failure following IVF treatment. Andrologia 2022; 54:e14496. [PMID: 35671775 DOI: 10.1111/and.14496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/06/2022] [Accepted: 05/18/2022] [Indexed: 11/27/2022] Open
Abstract
There is increasing evidence from the literature that indicates the association between impaired sperm DNA integrity and male infertility. However, the data is insufficient regarding recurrent implantation failure (RIF) and sperm DNA damage. This study aimed to investigate the association between sperm DNA fragmentation and RIF cases. Basic semen parameters and sperm DNA fragmentation index (DFI) of men whose partner was suffering from RIF were compared with men whose partner was diagnosed with unexplained infertility (UEI) but had clinical pregnancies following IVF treatment. A retrospective analysis from a large-volume IVF center has been performed, and a total of 197 couples underwent analysis. Two groups were formed, couples with RIF and couples diagnosed with UEI but had clinical pregnancies (controls) following IVF cycles. The mean number of cycles showed significant differences between the groups. However, no statistical difference was observed between RIF and the control group regarding patient characteristics, semen parameters, and sperm DNA fragmentation index (DFI). Also, no statistically significant correlation was found between sperm DFI and clinical pregnancies in the unexplained infertility cohort. Our results show that sperm DNA fragmentation may not be an important contributing factor to RIF cases.
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Affiliation(s)
- Alper Çağlayan
- Department of Urology, Izmir Bakırçay University Çiğli Training and Research Hospital, Izmir, Turkey
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22
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Liu Z, Zhou D, Liao L. pH/Redox/Lysozyme-Sensitive Hybrid Nanocarriers With Transformable Size for Multistage Drug Delivery. Front Bioeng Biotechnol 2022; 10:882308. [PMID: 35480969 PMCID: PMC9035699 DOI: 10.3389/fbioe.2022.882308] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
The majority of current nanocarriers in cancer treatment fail to deliver encapsulated cargos to their final targets at therapeutic levels, which decreases the ultimate efficacy. In this work, a novel core–shell nanocarrier with a biodegradable property was synthesized for efficient drug release and subcellular organelle delivery. Initially, silver nanoparticles (AgNPs) were grafted with terminal double bonds originating from N, N′-bisacrylamide cystamine (BAC). Then, the outer coatings consisting of chitosan (CTS) and polyvinyl alcohol (PVA) were deposited on the surface of modified AgNPs using an emulsion method. To improve the stability, disulfide-containing BAC was simultaneously reintroduced to cross-link CTS. The as-prepared nanoparticles (CAB) possessed the desired colloidal stability and exhibited a high drug loading efficiency of cationic anticancer agent doxorubicin (DOX). Furthermore, CAB was tailored to transform their size into ultrasmall nanovehicles responding to weak acidity, high glutathione (GSH) levels, and overexpressed enzymes. The process of transformation was accompanied by sufficient DOX release from CAB. Due to the triple sensitivity, CAB enabled DOX to accumulate in the nucleus, leading to a great effect against malignant cells. In vivo assays demonstrated CAB loading DOX held excellent biosafety and superior antitumor capacity. Incorporating all the benefits, this proposed nanoplatform may provide valuable strategies for efficient drug delivery.
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Affiliation(s)
- Zhe Liu
- The Affiliated Stomatological Hospital, Nanchang University, Nanchang, China
- The Key Laboratory of Oral Biomedicine, Nanchang, China
- Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, China
| | - Dong Zhou
- College of Chemistry, Nanchang University, Nanchang, China
| | - Lan Liao
- The Affiliated Stomatological Hospital, Nanchang University, Nanchang, China
- The Key Laboratory of Oral Biomedicine, Nanchang, China
- Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang, China
- *Correspondence: Lan Liao,
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23
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Impact of Heat Stress on Bovine Sperm Quality and Competence. Animals (Basel) 2022; 12:ani12080975. [PMID: 35454222 PMCID: PMC9027525 DOI: 10.3390/ani12080975] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/28/2022] [Accepted: 04/07/2022] [Indexed: 02/04/2023] Open
Abstract
Global warming has negatively influenced animal production performance, in addition to animal well-being and welfare, consequently impairing the economic sustainability of the livestock industry. Heat stress impact on male fertility is complex and multifactorial, with the fertilizing ability of spermatozoa affected by several pathways. Among the most significative changes are the increase in and accumulation of reactive oxygen species (ROS) causing lipid peroxidation and motility impairment. The exposure of DNA during the cell division of spermatogenesis makes it vulnerable to both ROS and apoptotic enzymes, while the subsequent post-meiotic DNA condensation makes restoration impossible, harming later embryonic development. Mitochondria are also susceptible to the loss of membrane potential and electron leakage during oxidative phosphorylation, lowering their energy production capacity under heat stress. Although cells are equipped with defense mechanisms against heat stress, heat insults that are too intense lead to cell death. Heat shock proteins (HSP) belong to a thermostable and stress-induced protein family, which eliminate protein clusters and are essential to proteostasis under heat stress. This review focuses on effects of heat stress on sperm quality and on the mechanisms leading to defective sperm under heat stress.
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Zhang Y, Hua W, Dang Y, Cheng Y, Wang J, Zhang X, Teng M, Wang S, Zhang M, Kong Z, Lu X, Zheng Y. Validated Impacts of N6-Methyladenosine Methylated mRNAs on Apoptosis and Angiogenesis in Myocardial Infarction Based on MeRIP-Seq Analysis. Front Mol Biosci 2022; 8:789923. [PMID: 35155564 PMCID: PMC8831860 DOI: 10.3389/fmolb.2021.789923] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/26/2021] [Indexed: 12/13/2022] Open
Abstract
Objectives: N6-methyladenosine (m6A) is hypothesized to play a role in the regulation of pathogenesis of myocardial infarction (MI). This study was designed to compare m6A-tagged transcript profiles to identify mRNA-specific changes on pathophysiological variations after MI. Methods: N6-methyladenosine methylated RNA immunoprecipitation sequencing (MeRIP-seq) and RNA sequencing (RNA-seq) were interacted to select m6A-modified mRNAs with samples collected from sham operated and MI rat models. m6A methylation regulated mRNAs were interacted with apoptosis/angiogenesis related genes in GeneCards. Afterwards, MeRIP-quantitative real-time PCR (MeRIP-qRT-PCR) was performed to measure m6A methylation level of hub mRNAs. m6A methylation variation was tested under different oxygen concentration or hypoxic duration in H9c2 cells and HUVECs. In addition, Western blot and qRT-PCR were employed to detect expression of hub mRNAs and relevant protein level. Flow cytometry and Tunel assay were conducted to assess apoptotic level. CCK-8, EdU, and tube formation assay were performed to measure cell proliferation and tube formation ability. Results: Upregulation of Mettl3 was firstly observed in vivo and in vitro, followed by upregulation of m6A methylation level. A total of 567 significantly changed m6A methylation peaks were identified, including 276 upregulated and 291 downregulated peaks. A total of 576 mRNAs were upregulated and 78 were downregulated. According to combined analysis of MeRIP-seq and RNA-seq, we identified 26 significantly hypermethylated and downregulated mRNAs. Based on qRT-PCR and interactive analysis, Hadh, Kcnn1, and Tet1 were preliminarily identified as hub mRNAs associated with apoptosis/angiogenesis. MeRIP-qRT-PCR assay confirmed the results from MeRIP-seq. With the inhibition of Mettl3 in H9c2 cells and HUVECs, downregulated m6A methylation level of total RNA and upregulated expression of hub mRNAs were observed. Increased m6A level was verified in the gradient context in terms of prolonged hypoxic duration and decreased oxygen concentration. Under simulated hypoxia, roles of Kcnn1 and Tet1 in angiogenesis and Hadh, Tet1, and Kcnn1 in apoptosis were further confirmed with our validation experiments. Conclusion: Roles of m6A-modified mRNA transcripts in the context of MI were preliminarily verified. In the context of m6A methylation, three hub mRNAs were validated to impact the process of apoptosis/angiogenesis. Our study provided theoretical basis and innovative targets for treatment of MI and paved the way for future investigations aiming at exploring upstream epigenetic mechanisms of pathogenesis after MI.
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Affiliation(s)
- Yingjie Zhang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wenjie Hua
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yini Dang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yihui Cheng
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jiayue Wang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiu Zhang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Meiling Teng
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shenrui Wang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Min Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zihao Kong
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiao Lu
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Yu Zheng, ; Xiao Lu,
| | - Yu Zheng
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Yu Zheng, ; Xiao Lu,
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25
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OUP accepted manuscript. Clin Chem 2022; 68:489-490. [DOI: 10.1093/clinchem/hvac015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 01/21/2022] [Indexed: 11/13/2022]
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26
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Mottola F, Santonastaso M, Iovine C, Rossetti C, Ronga V, Rocco L. DNA Damage in Human Amniotic Cells: Antigenotoxic Potential of Curcumin and α-Lipoic Acid. Antioxidants (Basel) 2021; 10:antiox10071137. [PMID: 34356370 PMCID: PMC8301061 DOI: 10.3390/antiox10071137] [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] [Received: 05/29/2021] [Revised: 07/12/2021] [Accepted: 07/15/2021] [Indexed: 12/18/2022] Open
Abstract
Oxidative imbalances in the gestational phase are responsible for certain complications during pregnancy and for foetal and neonatal genetic disorders. In this work, using human amniocytes, we aimed to evaluate the protection provided to foetal DNA by two concentrations of antioxidant molecules, α-lipoic acid (LA) and curcumin (Cur), against hydrogen peroxide (H2O2)-induced damage. Genotoxicity tests, performed by the random amplification of polymorphic DNA (RAPD-PCR) technique and TUNEL tests, showed that the lowest concentration of LA-protected cells and DNA from H2O2 insults. However, a greater ability to protect the amniocytes’ DNA against H2O2 was observed following co-treatment with the highest concentration of Cur with H2O2. In fact, a genomic template stability (GTS%) similar to that of the negative control and a statistically significant reduction in the DNA fragmentation index (DFI) were revealed. Moreover, following a combined treatment with both antioxidants and H2O2, no statistical difference from controls was observed, in terms of both induced mutations and DNA breaks. Furthermore, no effect on morphology or cell viability was observed. The results demonstrate the ability of LA and Cur to protect the genetic material of amniocytes against genotoxic insults, suggesting their beneficial effects in pathologies related to oxidative stress.
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Affiliation(s)
- Filomena Mottola
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy; (F.M.); (C.I.)
| | - Marianna Santonastaso
- Department of Woman, Child and General and Special Surgery, University of Campania, Luigi Vanvitelli, 80138 Napoli, Italy;
| | - Concetta Iovine
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy; (F.M.); (C.I.)
| | - Cristina Rossetti
- Laboratory of Animal Cytogenetics and Genomics, National Research Council (CNR), ISPAAM, 80055 Napoli, Italy;
| | - Valentina Ronga
- Prenatal Diagnosis Unit, Varelli Diagnostic Institute, 80126 Napoli, Italy;
| | - Lucia Rocco
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy; (F.M.); (C.I.)
- Correspondence:
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Durairajanayagam D, Agarwal A, Baskaran S, Vij S. Afterword: An update on clinical utility and diagnostic value of various andrological techniques. Andrologia 2021; 53:e13819. [PMID: 33620116 DOI: 10.1111/and.13819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 08/06/2020] [Indexed: 11/29/2022] Open
Affiliation(s)
- Damayanthi Durairajanayagam
- Department of Physiology, Faculty of Medicine, Universiti Teknologi MARA, Kampus Sungai Buloh, Selangor, Malaysia
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Saradha Baskaran
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Sarah Vij
- Department of Urology, Cleveland Clinic, Cleveland, OH, USA
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