Reproductive Medicine and Biology最新文献_第2页

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-12-26 eCollection Date: 2025-01-01 DOI: 10.1002/rmb2.12617

引用次数: 0

Lipid droplet biogenesis in the ovary. 卵巢中脂滴的生物生成

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-12-15 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12618

Megumi Ibayashi, Satoshi Tsukamoto

{"title":"Lipid droplet biogenesis in the ovary.","authors":"Megumi Ibayashi, Satoshi Tsukamoto","doi":"10.1002/rmb2.12618","DOIUrl":"10.1002/rmb2.12618","url":null,"abstract":"Background: Lipid droplets (LDs) are organelles consisting of a central core of neutral lipids covered by a single layer of phospholipids and are found in most eukaryotic cells. Accumulating evidence suggests that LDs not only store neutral lipids but also coordinate with other organelles for lipid metabolism within cells.Methods: This review focuses on the synthesis of LDs during follicular development and highlights the factors involved in the regulation of LD biogenesis within the ovary.Main findings: In the mammalian ovary, the presence of LDs has long been recognized mainly by morphological analysis. However, their distribution in the ovary varies according to the region and cell type; for example, LDs are abundant in the medulla, which has a rich blood vessel network, in interstitial cells, which are the site of steroid production, and surrounding growing follicles, while they are poor in granulosa cells within follicles. LDs are also enriched in the corpus luteum after ovulation and massively accumulate in atretic follicles during follicular growth. Furthermore, LD synthesis is synchronized with angiogenesis during follicular development.Conclusion: Addressing the functional link between LD biogenesis and angiogenesis is essential for understanding the molecular basis underlying LD biology, as well as the ovarian dysfunction with metabolic disorders.","PeriodicalId":21116,"journal":{"name":"Reproductive Medicine and Biology","volume":"23 1","pages":"e12618"},"PeriodicalIF":2.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11646352/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inflammatory responses in early pregnancy: Physiological and pathological perspectives. 妊娠早期的炎症反应：生理和病理角度。

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-12-15 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12619

Yasuyuki Negishi, Rimpei Morita

{"title":"Inflammatory responses in early pregnancy: Physiological and pathological perspectives.","authors":"Yasuyuki Negishi, Rimpei Morita","doi":"10.1002/rmb2.12619","DOIUrl":"10.1002/rmb2.12619","url":null,"abstract":"Background: Several conditions such as infertility, repeated implantation failure, and recurrent pregnancy loss can pose challenges in early pregnancy. These issues can be caused by the abnormal inflammatory response with various factors, including exogenous and endogenous agents, and pathogenic and nonpathogenic agents. In addition, they can be exacerbated by maternal immune response to the abovementioned factors.Methods: This review aimed to assess the detrimental inflammatory effects of chronic endometritis, endometrial microbiota disturbance, and maternal immune system abnormalities on early pregnancy. Further, essential details such as ovulation, implantation, trophoblast invasion, and placental formation, were examined, thereby highlighting the beneficial roles of inflammation.Main findings: Excessive inflammation was associated with various early pregnancy disorders. Meanwhile, a lack of appropriate inflammation could also contribute to the development of different early pregnancy complications.Conclusion: Excessive inflammation and insufficient inflammation can possibly lead to abnormal conditions in early pregnancy, and appropriate inflammation is required for a successful pregnancy.","PeriodicalId":21116,"journal":{"name":"Reproductive Medicine and Biology","volume":"23 1","pages":"e12619"},"PeriodicalIF":2.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11646355/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assisted reproductive technology in Japan: A summary report for 2022 by the Ethics Committee of the Japan Society of Obstetrics and Gynecology. 日本的辅助生殖技术：日本妇产科学会伦理委员会 2022 年总结报告。

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-12-15 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12620

Yukiko Katagiri, Seung Chik Jwa, Akira Kuwahara, Takeshi Iwasa, Masanori Ono, Keiichi Kato, Hiroshi Kishi, Yoshimitsu Kuwabara, Fuminori Taniguchi, Miyuki Harada, Akira Iwase, Norihiro Sugino

{"title":"Assisted reproductive technology in Japan: A summary report for 2022 by the Ethics Committee of the Japan Society of Obstetrics and Gynecology.","authors":"Yukiko Katagiri, Seung Chik Jwa, Akira Kuwahara, Takeshi Iwasa, Masanori Ono, Keiichi Kato, Hiroshi Kishi, Yoshimitsu Kuwabara, Fuminori Taniguchi, Miyuki Harada, Akira Iwase, Norihiro Sugino","doi":"10.1002/rmb2.12620","DOIUrl":"10.1002/rmb2.12620","url":null,"abstract":"Purpose: This descriptive analysis evaluated the 2022 assisted reproductive technology (ART) data collected by the Japan Society of Obstetrics and Gynecology registry.Methods and results: In 2022 (cutoff date 30 November 2023), 634 of 635 registered ART facilities participated; 602 implemented ART treatment, with 543 630 registered cycles and 77 206 neonates (9.1% and 10.6% increases from the previous year). For fresh cycles, freeze-all in vitro fertilization and intracytoplasmic sperm injection cycles increased, resulting in 2183 and 2822 neonates, respectively. In total, 275 296 cycles resulted in oocyte retrieval, with 158 247 (57.5%) freeze-all cycles. Total single embryo transfer (ET) and singleton pregnancy rates were 82.4% and 97.2%, respectively. The singleton live birth rate was 97.4%. The number of frozen-thawed ET (FET) cycles was 264 412, with 98 348 pregnancies and 72 201 neonates. The single ET rate was 85.3%. The rate of singleton pregnancies was 96.9%; that of singleton live births was 96.9%. Per registered cycle, women had a mean age of 37.6 (standard deviation: 4.8) years; 210 322 cycles (38.7%) were conducted for women aged ≥40 years.Conclusions: Significant growth in ART cycles and outcomes reflects the impact of recent expanded insurance coverage.","PeriodicalId":21116,"journal":{"name":"Reproductive Medicine and Biology","volume":"23 1","pages":"e12620"},"PeriodicalIF":2.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11646354/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of differentially expressed genes in human testis biopsies with defective spermatogenesis. 鉴定精子发生缺陷的人类睾丸活检组织中的差异表达基因。

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-12-15 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12616

Shashika D Kothalawala, Stefan Günther, Hans-Christian Schuppe, Adrian Pilatz, Florian Wagenlehner, Sabine Kliesch, Liza O'Donnell, Daniela Fietz

{"title":"Identification of differentially expressed genes in human testis biopsies with defective spermatogenesis.","authors":"Shashika D Kothalawala, Stefan Günther, Hans-Christian Schuppe, Adrian Pilatz, Florian Wagenlehner, Sabine Kliesch, Liza O'Donnell, Daniela Fietz","doi":"10.1002/rmb2.12616","DOIUrl":"10.1002/rmb2.12616","url":null,"abstract":"Purpose: Sperm morphology and motility are major contributors to male-factor infertility, with many genes predicted to be involved. This study aimed to elucidate differentially expressed transcripts in human testis tissues of normal and abnormal spermatogenesis that could reveal new genes that may regulate sperm morphology and function.Methods: Human testis biopsies were collected from men with well-characterized phenotypes of normal spermatogenesis, spermatid arrest, and Sertoli cell-only phenotype, and transcriptional differences were quantified by RNA-sequencing (RNA-Seq). Differentially expressed genes (DEGs) were filtered based on predominant expression in spermatids and gene functional annotations relevant to sperm morphology and motility. Selected 10 DEGs were validated by qRT-PCR and the localization of two proteins was determined in testis biopsies.Results: The analysis revealed 6 genes (SPATA31E1, TEKT3, SLC9C1, PDE4A, CFAP47, and TNC) that are excellent candidates for novel genes enriched in developing human sperm. The immunohistochemical localization of two proteins, ORAI1 and SPATA31E1, in testis biopsies, verified that both are expressed in developing human germ cells, with SPATA31E1 enriched in late spermatocytes and spermatids.Conclusion: This study identified human germ cell-enriched genes that could play functional roles in spermiogenesis and could thus be important in the development of morphologically normal, motile sperm.","PeriodicalId":21116,"journal":{"name":"Reproductive Medicine and Biology","volume":"23 1","pages":"e12616"},"PeriodicalIF":2.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11646353/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The relationship between controlled ovarian stimulation protocol, meiotic spindle visibility, position of the meiotic spindle relative to the polar body in the human oocyte, and clinical outcomes following ICSI. 受控卵巢刺激方案、减数分裂纺锤体能见度、减数分裂纺锤体相对于人类卵母细胞极体的位置与卵胞浆内单精子显微注射临床结果之间的关系。

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-12-13 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12601

Taketo Inoue, Yuki Matsuo, Sayumi Taguchi, Yoshiko Tsujimoto, Mikiko Uemura, Yoshiki Yamashita

{"title":"The relationship between controlled ovarian stimulation protocol, meiotic spindle visibility, position of the meiotic spindle relative to the polar body in the human oocyte, and clinical outcomes following ICSI.","authors":"Taketo Inoue, Yuki Matsuo, Sayumi Taguchi, Yoshiko Tsujimoto, Mikiko Uemura, Yoshiki Yamashita","doi":"10.1002/rmb2.12601","DOIUrl":"10.1002/rmb2.12601","url":null,"abstract":"Purpose: To investigate the effects of different controlled ovarian stimulation (COS) protocols, including the progestin-primed ovarian stimulation (PPOS), long, short, and the gonadotropin-releasing hormone antagonist protocols, on meiotic spindle visibility and position within the oocyte and clinical outcomes following ICSI.Methods: Before ICSI, spindle position (θ) just below the polar body (PB) was defined as 0° and categorized as follows: θ = 0°, 0° < θ ≤ 30°, 30° < θ ≤ 60°, 60° < θ ≤ 90°, 90° < θ ≤ 180°, between the PB and the oolemma, and nonvisible. The clinical outcomes after ICSI were retrospectively analyzed.Results: The normal fertilization rate was significantly higher in oocytes with visible spindles than in oocytes with nonvisible spindles after each COS protocol, but did not differ based on spindle positioning (0° ≤ θ ≤ 180°). The rates of pregnancy, live birth/ongoing pregnancy, and miscarriage did not differ based on spindle visibility or positioning. In multinominal logistic regression analysis, female age was associated with spindle position, and the odds of a spindle located at 30° < θ ≤ 60°, at 60° < θ ≤ 90°, or at 90° < θ ≤ 180° were increased relative to θ = 0° in older women (odds ratio; 1.020, 1.030, and 1.060, respectively; p < 0.05).Conclusion: Meiotic spindle positioning in the oocyte does not affect normal fertilization, blastulation, pregnancy, live birth/ongoing pregnancy, and miscarriage after ICSI, independent of the COS protocol used.","PeriodicalId":21116,"journal":{"name":"Reproductive Medicine and Biology","volume":"23 1","pages":"e12601"},"PeriodicalIF":2.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11645447/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Association between anti-Müllerian hormone levels and polycystic ovary syndrome in a general cohort of young women in Japan. 日本年轻女性总体队列中抗穆勒氏管激素水平与多囊卵巢综合征之间的关系。

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-11-11 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12615

Natsuki Miyake, Satoko Osuka, Isao Ohsawa, Takashi Tonoike, Tomoko Uno, Kazuo Tsuzuki, Bayasula, Reina Sonehara, Ayako Muraoka, Tomoko Nakamura, Maki Goto, Akira Iwase, Hiroaki Kajiyama

{"title":"Association between anti-Müllerian hormone levels and polycystic ovary syndrome in a general cohort of young women in Japan.","authors":"Natsuki Miyake, Satoko Osuka, Isao Ohsawa, Takashi Tonoike, Tomoko Uno, Kazuo Tsuzuki, Bayasula, Reina Sonehara, Ayako Muraoka, Tomoko Nakamura, Maki Goto, Akira Iwase, Hiroaki Kajiyama","doi":"10.1002/rmb2.12615","DOIUrl":"https://doi.org/10.1002/rmb2.12615","url":null,"abstract":"Purpose: Polycystic ovary syndrome (PCOS) significantly affects women. This study investigated the association between serum anti-Müllerian hormone (AMH) levels and menstrual cycle disorders, and AMH for PCOS in a general cohort of young Japanese women.Methods: We measured serum AMH levels in 528 healthy female students at two universities in Japan between 2014 and 2020. We investigated the association between serum AMH levels and hormone levels, menstrual cycle, and body mass index.Results: The mean (±standard deviation) AMH level was 4.78 ± 2.88 ng/mL. Correlations were observed between serum AMH and luteinizing hormone (LH) or LH/follicle-stimulating hormone (FSH) levels in women with irregular menstruation (LH: r = 0.542, p < 0.001; LH/FSH: r = 0.584, p < 0.001). The optimal serum AMH cutoff value that predicted LH ≥7.1 IU/L and LH/FSH ≥1.21 (PCOS diagnostic criteria revised by Japan Society of Obstetrics and Gynecology) in women with menstrual irregularities was 5.30 ng/mL (area under the curve: 0.815, sensitivity: 84.2%, specificity: 70.3%).Conclusions: Serum AMH can be measured during annual health checkups and may be a useful biomarker for early and arcuate diagnosis and intervention in women with PCOS.","PeriodicalId":21116,"journal":{"name":"Reproductive Medicine and Biology","volume":"23 1","pages":"e12615"},"PeriodicalIF":2.7,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11551881/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ectopic expression of the mitochondrial protein COXFA4L3 in human sperm acrosome and its potential application in the selection of male infertility treatments. 线粒体蛋白 COXFA4L3 在人类精子顶体中的异位表达及其在选择男性不育治疗方法中的潜在应用。

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-10-29 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12602

Yusuke Fujisawa, Sayaka Kikuchi, Fujino Kuba, Kosei Oishi, Soushi Murayama, Tomoya Sugiyama, Reiji Tokito, Hiroe Ueno, Shin-Ichi Kashiwabara, Yasushi Yumura, Yasuyuki Kurihara

{"title":"Ectopic expression of the mitochondrial protein COXFA4L3 in human sperm acrosome and its potential application in the selection of male infertility treatments.","authors":"Yusuke Fujisawa, Sayaka Kikuchi, Fujino Kuba, Kosei Oishi, Soushi Murayama, Tomoya Sugiyama, Reiji Tokito, Hiroe Ueno, Shin-Ichi Kashiwabara, Yasushi Yumura, Yasuyuki Kurihara","doi":"10.1002/rmb2.12602","DOIUrl":"10.1002/rmb2.12602","url":null,"abstract":"Purpose: Spermatogenesis requires a large amount of energy, which is primarily produced by the mitochondrial electron transfer chain. Mitochondrial dysfunction affects male infertility, suggesting a relationship between the electron transfer chain and male infertility. COXFA4L3 (C15ORF48) is an emerging subunit protein of cytochrome oxidase specifically expressed in germ cells during spermatogenesis, and it may be involved in male infertility. Therefore, to investigate whether COXFA4L3 could be a marker of mitochondrial dysfunction in the sperm, this study examined the protein expression and localization profile of COXFA4L3 in the sperm of male patients with infertility.Methods: Twenty-seven semen samples from a male infertility clinic at the Reproductive Center of Yokohama City University Medical Center were used to analyze sperm quality parameters and the expression and localization of energy production-related proteins. These data were compared with the outcomes of infertility treatment.Results: The expression levels of COXFA4L3 varied significantly between samples. Furthermore, COXFA4L3 was ectopically localized to the acrosome.Conclusions: Ectopic expression of COXFA4L3 and PNA-stained acrosomes may be useful parameters for fertility treatment selection. Assessing the acrosomal localization of COXFA4L3 will expedite pregnancy treatment planning.","PeriodicalId":21116,"journal":{"name":"Reproductive Medicine and Biology","volume":"23 1","pages":"e12602"},"PeriodicalIF":2.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11522028/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular mechanisms of mammalian sperm capacitation, and its regulation by sodium-dependent secondary active transporters. 哺乳动物精子获能的分子机制及其受钠依赖性二级活性转运体的调控。

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-10-16 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12614

Gen L Takei

{"title":"Molecular mechanisms of mammalian sperm capacitation, and its regulation by sodium-dependent secondary active transporters.","authors":"Gen L Takei","doi":"10.1002/rmb2.12614","DOIUrl":"https://doi.org/10.1002/rmb2.12614","url":null,"abstract":"Background: Mammalian spermatozoa have to be \"capacitated\" to be fertilization-competent. Capacitation is a collective term for the physiological and biochemical changes in spermatozoa that occur within the female body. However, the regulatory mechanisms underlying capacitation have not been fully elucidated.Methods: Previously published papers on capacitation, especially from the perspective of ions/channels/transporters, were extracted and summarized.Results: Capacitation can be divided into two processes: earlier events (membrane potential hyperpolarization, intracellular pH rise, intracellular Ca2+ rise, etc.) and two major later events: hyperactivation and the acrosome reaction. Earlier events are closely interconnected with each other. Various channels/transporters are involved in the regulation of them, which ultimately lead to the later events. Manipulating the extracellular K+ concentration based on the oviductal concentration modifies membrane potential; however, the later events and fertilization are not affected, suggesting the uninvolvement of membrane potential in capacitation. Hyperpolarization is a highly conserved phenomenon among mammalian species, indicating its importance in capacitation. Therefore, the physiological importance of hyperpolarization apart from membrane potential is suggested.Conclusion: The hypotheses are (1) hyperpolarizing Na+ dynamics (decrease in intracellular Na+) and Na+-driven secondary active transporters play a vital role in capacitation and (2) the sperm-specific potassium channel Slo3 is involved in volume and/or morphological regulation.","PeriodicalId":21116,"journal":{"name":"Reproductive Medicine and Biology","volume":"23 1","pages":"e12614"},"PeriodicalIF":2.7,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11480905/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142473585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to "A new clustering model based on the seminal plasma/serum ratios of multiple trace element concentrations in male patients with subfertility". 更正 "基于男性不育症患者精浆/血清中多种微量元素浓度比值的新聚类模型"。

IF 2.7 3区医学

Reproductive Medicine and Biology Pub Date : 2024-10-08 eCollection Date: 2024-01-01 DOI: 10.1002/rmb2.12613

引用次数: 0