Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 5 de 5
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Ceska Gynekol ; 87(3): 198-201, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35896399

RESUMO

OBJECTIVE: Systemic lupus erythematosus (SLE) and secondary anti-phospholipid syndrome (APS II) can cause increased morbidity and mortality of the fetus. We followed the course of fertility of two sisters with these two basic diseases. METHODS: In the Center for Immunology of Reproduction, we confi rmed both sisters had increased levels of some selected anti-phospholipid antibodies (against phosphatidylserine, phosphatidylethanolamine, phosphatidylinositol, DL-glycerole, anexin V, phoshatidic acid, cardiolipin, beta2-glycoprotein I), anti-nuclear, and anti-DNA antibodies. During the established immunosuppressive and hormonal therapy at the time of SLE remission, both sisters became pregnant. There was a physiological progression of pregnancy until the 19th week. RESULTS: At the 20th week of pregnancy, the older sister miscarried again, and the younger sister developed hypertension in the 31st week of pregnancy which was terminated by caesarean section. CONCLUSION: In our causal evaluation, we addressed two serious autoimmune diseases (SLE, APS II) in two sisters and described their course of pregnancy. However, only one of them became a happy mother.


Assuntos
Síndrome Antifosfolipídica , Lúpus Eritematoso Sistêmico , Anticorpos Anticardiolipina , Síndrome Antifosfolipídica/complicações , Cesárea , Feminino , Fertilidade , Humanos , Lúpus Eritematoso Sistêmico/complicações , Gravidez
2.
Syst Biol Reprod Med ; 66(1): 3-11, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31580744

RESUMO

Chromatin remodeling, including histone post-translational modifications, during spermatogenesis can affect sperm quality and fertility, and epigenetic marks may therefore be useful for clinical evaluations of sperm. Together with histone hyperacetylation, the dimethylation of histone H3 on lysine K4 (H3K4me2) is also required during protamination. Accordingly, we evaluated the utilization of this epigenetic mark for the identification of sperm with decrease quality and immature chromatin. In this study, 99 semen samples, including 22 normozoospermic (N), 63 asthenozoospermic (A), and 14 oligoasthenozoospermic (OA) samples, were comprehensively analyzed with respect to H3K4me2 levels, DNA damage (DNA fragmentation index, DFI), and sperm immaturity (high DNA stainability, %HDS), as determined by a sperm chromatin structure assay using flow cytometry. We detected a significant relationship between H3K4me2 and %HDS (r = 0.47; p < 0.001). Furthermore, we observed negative correlations between H3K4me2 and sperm concentration, motility, and mitochondrial activity (p < 0.05). The increase in immaturity as semen quality decreased (N > A > OA) indicates the importance of chromatin immaturity and histone code deviations in sperm evaluations. Using various approaches, our study elucidated H3K4me2 as a molecular marker of sperm quality with potential use in reproductive medicine.Abbreviations: A: asthenozoospermic; AO: acridine orange; ART: assisted reproductive therapy; BWW: Biggers-Whitten Whittingham; DAPI: 4',6' -diamidino-2-phenylindole; DFI: DNA fragmentation index; H3K4me2: dimethylation of lysine K4 on histones H3; HDS: high DNA stainability; HRP: horseradish peroxidase; MACS: magnetic-activated cell sorting; N: normospermic; NGS: normal goat serum; OA: oligoasthenozoospermic; PTM: post-translational modification; SCSA: sperm chromatin structure assay; SUTI: sperm ubiquitin tag assay; TBS-T: TBS with 0.5% Tween-20.


Assuntos
Montagem e Desmontagem da Cromatina , Código das Histonas , Histonas/metabolismo , Espermatozoides/metabolismo , Adulto , Astenozoospermia/metabolismo , Biomarcadores/metabolismo , Humanos , Masculino , Metilação , Oligospermia/metabolismo , Análise do Sêmen
3.
Immunol Invest ; 47(6): 569-582, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29873595

RESUMO

BACKGROUND: This study was conducted to summarize current knowledge of the changes within the immune system, from action of macrophages, lymphocytes and NK cells to biological effects of their products. Endometriosis is a complex gynecological disorder defined as a presence of endometrial tissue outside the uterus affecting over 5 million reproductive-aged women in the U.S. alone. RESULT: In recent years, the potential role of the immune system in the development of endometriosis has increasingly gained attention. Data summarized in our study showed that the most relevant immunocytes are macrophages residing inside the peritoneal cavity and the ratios of Th1 to Th2 cells. Another crucial immunological parameter is the balance in production of cytokines and chemoatractants. CONCLUSIONS: This review confirms that despite decades of intensive research, the involvement of the immune system remains elusive, as we can recognize the changes, but still do not understand if these changes represent the results of endometriosis or if they are contributing factors. Based on these findings, we also discuss new treatment possibilities.


Assuntos
Citocinas/sangue , Endometriose/imunologia , Células Matadoras Naturais/imunologia , Macrófagos/imunologia , Equilíbrio Th1-Th2/fisiologia , Endometriose/patologia , Feminino , Humanos , Linfócitos T Reguladores/imunologia , Células Th1/imunologia , Células Th2/imunologia
4.
Syst Biol Reprod Med ; 62(3): 223-6, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27110929

RESUMO

Anti-Müllerian hormone (AMH) is a factor most associated with female fertility and especially with the ovarian reserve. AMH is also used as a parameter of fertility in men as it arises from the epithelium of the seminiferous tubules that contain Sertoli cells which produce the AMH. To investigate the relationship between AMH production and sperm related parameters we compared the AMH levels in serum and seminal plasma between a group of healthy males (n=65) and male patients (n=68) of infertile couples with semen pathology. We assessed the following fertility parameters: sperm count (SC), presence of intra-acrosomal enzymes (IAE), and antispermatozoal antibodies (ASA). Infertile men were divided into four subgroups according to: SC less than 15 million, SC less than 15 million and lack of IAE, SC less than 15 million and presence of ASA, presence of all three pathological parameters. The mean AMH serum level in the healthy group was 6.95 ng/ml and no significant difference was observed in serum AMH levels. The mean AMH seminal plasma level in the healthy group was 14.21 ng/ml. We observed a statistically significant decrease in the group with a SC with less than 15 million (3.29 ng/ml, p=0.0001) sperm, in the group with SC less than 15 million sperm and lack of IAE (3.95 ng/ml, p=0.0046), and in the group with all three pathological parameters (2.65 ng/ml, p=<0.0001). No significant difference was observed in the group with SC less than 15 million sperm and ASA positivity (11.41 ng/ml, p=0.3171). In conclusion AMH serum levels do not correlate with any of the observed parameters. AMH levels in seminal plasma positively correlate with the pathological SC and with SC pathology and IAE together.


Assuntos
Hormônio Antimülleriano/sangue , Fertilidade , Sêmen/metabolismo , Acrossomo/enzimologia , Adulto , Autoanticorpos/imunologia , Humanos , Infertilidade Masculina/sangue , Infertilidade Masculina/imunologia , Masculino , Pessoa de Meia-Idade , Análise do Sêmen , Contagem de Espermatozoides , Espermatozoides/imunologia
5.
Womens Health (Lond) ; 10(6): 591-7, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25482486

RESUMO

Endometriosis is manifested by the presence of both endometrial glandular and stromal cells outside the uterine cavity. It is characterized by ectopic implantation of endometrial cells with elevated proliferation and migration. Endometriosis is the leading cause of morbidity among premenopausal women and the complex pathogenesis of this disease remains controversial despite extensive research. This rather complex disease has a significant impact on quality of life of many women as none of the current treatments represent a cure. Based on the current knowledge, one can conclude that the histological and genetic alterations in endometriosis might explain why and how endometriosis can change into several types of cancer. However, the exact mechanisms of this conversion are still not fully established.


Assuntos
Endometriose/complicações , Endometriose/fisiopatologia , Neoplasias Ovarianas/etiologia , Feminino , Humanos , Células-Tronco/fisiologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...