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1.
Arch Immunol Ther Exp (Warsz) ; 70(1): 13, 2022 Mar 24.
Artículo en Inglés | MEDLINE | ID: mdl-35325391

RESUMEN

Increased androgen level, hyperinsulinemia, diabetes, impaired fibrinolysis, obesity, hypertension, chronic inflammation, abnormal immune response to infections and hyperhomocysteinemia are the most common abnormalities related to polycystic ovary syndrome (PCOS) women and are the factors predisposing to the severe course of COVID-19. The SARS-Cov-2 infection during pregnancy is associated with an increased risk of complications (spontaneous abortion), similar to those in PCOS. The treatment of PCOS pregnant women with a history of fertility failures raises many doubts, especially during the COVID pandemic. However, due to the increasing incidence of infections among reproductive people and the potentially more serious course in pregnant women, numerous questions about the safety and effectiveness of the treatment are still very current. In our study we presented a series of cases of recurrent miscarriages or recurrent implantation failure PCOS pregnant women with confirmed COVID-19. The diagnosis of infertility confirmed the presence of plasminogen activator inhibitor type 1 and/or 5,10-methylenetetrahydrofolate reductase polymorphisms in each of them. Moreover, some of the women presented immune dysfunction associated with infertility. We have described the personalized treatments of each pregnant patient included: metformin, enoxaparin and tacrolimus. The treatment applied had the expected effect, supporting the implantation processes. Furthermore, despite the ambiguous data according to immunological therapy of infertile women during the COVID pandemic, we observed a mild or asymptomatic COVID-19 course and we noticed no pregnancy complications.


Asunto(s)
Aborto Espontáneo , COVID-19 , Infertilidad Femenina , Síndrome del Ovario Poliquístico , Aborto Espontáneo/epidemiología , Femenino , Humanos , Infertilidad Femenina/complicaciones , Infertilidad Femenina/epidemiología , Infertilidad Femenina/terapia , Pandemias , Síndrome del Ovario Poliquístico/complicaciones , Síndrome del Ovario Poliquístico/epidemiología , Embarazo , Mujeres Embarazadas , SARS-CoV-2
2.
J Clin Med ; 10(21)2021 Oct 29.
Artículo en Inglés | MEDLINE | ID: mdl-34768607

RESUMEN

In our previous study, we showed that sildenafil citrate (SC), a selective PDE5A blocker, modulated NK cell activity in patients with recurrent pregnancy loss, which correlated with positive pregnancy outcomes. It was found that NK cells had a pivotal role in decidualization, angiogenesis, spiral artery remodeling, and the regulation of trophoblast invasion. Thus, in the current study, we determined the effects of SC on angiogenic factor expression and production, as well as idNK cell activity in the presence of nitric synthase blocker L-NMMA. Methods: NK cells (CD56+) were isolated from the peripheral blood of 15 patients and 15 fertile women on MACS columns and cultured in transformation media containing IL-15, TGF-ß, and AZA-a methylation agent-for 7 days in hypoxia (94% N2, 1% O2, 5% CO2). Cultures were set up in four variants: (1) with SC, (2) without SC, (3) with NO, a synthase blocker, and (4) with SC and NO synthase blocker. NK cell activity was determined after 7 days of culturing as CD107a expression after an additional 4h of stimulation with K562 erythroleukemia cells. The expression of the PDE5A, VEGF-A, PIGF, IL-8, and RENBP genes was determined with quantitative real-time PCR (qRT-PCR) using TaqMan probes and ELISA was used to measure the concentrations of VEGF-A, PLGF, IL-8, Ang-I, Ang-II, IFN-γ proteins in culture supernatants after SC supplementation. Results: SC downregulated PDE5A expression and had no effect on other studied angiogenic factors. VEGF-A expression was increased in RPL patients compared with fertile women. Similarly, VEGF production was enhanced in RPL patients' supernatants and SC increased the concentration of PIGF in culture supernatants. SC did not affect the expression or concentration of other studied factors, nor idNK cell activity, regardless of NO synthase blockade.

3.
J Clin Med ; 10(14)2021 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-34300281

RESUMEN

Sildenafil citrate (SC), a PDE5 inhibitor, a drug for erectile dysfunction (ED) and pulmonary hypertension (PAH), was found to exert a positive effect on pregnancy outcomes when administered intravaginally before conception. In our previous studies, sildenafil increased endometrial thickness and significantly decreased peripheral blood NK cell activity after the intravaginal administration in women with recurrent pregnancy loss (RPL). No data are available to confirm the effect of sildenafil on maternal T cell populations involved in shaping fetal-maternal tolerance and NK cell activity. Thus, the present study aimed to establish if SC influences NKT cells or the axis of Th17/Treg cells and Th1/Th2 cytokine production. MATERIALS AND METHODS: Twenty-one healthy fertile women and twenty-two nonpregnant women with idiopathic RPL were studied. The ELISA method was used to evaluate the production of cytokines, including IL-2, IL-12p40, IL-4, IL-10, IL-6, IL-17, IL-21, TGF-ß, TNF-α, and IFN-γ in PBMC culture supernatants before and after supplementation with the physiological concentration of SC. The percentages of NKT (CD56+CD3+CD44+CD161+), Treg (CD4+CD25+FOXP3+) and Th17 (CD4+CD25+IL-17A+) cells were determined with flow cytometry method. RESULTS: Unexpectedly, we found that the PBMCs of patients with RPL produced a significantly lower level of inflammatory cytokines (TNF-α and IL-6) and a higher level of anti-inflammatory cytokines (TGF-ß and IL-10). SC significantly decreased IL-6, IL-12 and increased TGF-ß cytokine concentration in fertile women. In the case of RPL patients' PBMCs, SC improved the production of TNF-α and IL-10. CONCLUSIONS: Lower concentration of proinflammatory cytokines in idiopathic RPL women compared to fertile women might suggest the exhaustion of the immune system. The emphasized production of IL-10 by SC partially explains the previously observed downregulation of NK cell activity in RPL patients. The immunomodulatory effect of the drug might be utilized in anti-inflammatory therapies and help achieve positive pregnancy outcomes in women with reproductive failure due to a Th1/Th2 imbalance.

4.
J Clin Med ; 10(13)2021 Jun 30.
Artículo en Inglés | MEDLINE | ID: mdl-34208804

RESUMEN

Due to an increasing number of cesarean section deliveries, the common consequences of that surgery are observed more often in the population. One of them is the uterine cesarean scar defect known as niche or isthmocele. Most patients with that aliment are asymptomatic, but some of them can report abnormal uterine bleeding, pelvic pain, subfertility which can be the reason for reduced quality of life (QoL) of the patients. In our study, we analyzed the subjective feelings of changes in the severity of symptoms and quality of life of women with niche after diagnostic and operative hysteroscopy. The patients n = 85 included in the study group completed a follow up questionnaire six months after the procedure. Patients after operative hysteroscopy in comparison to patients after diagnostic procedure reported statistically significant reduction in post-menstruation bleeding/spotting and improvement in the quality of sexual activity. We have also noticed a higher pregnancy rate in the operative group, however, the difference was not statistically significant. According to our study, most women reported a positive effect of hysteroscopy on their QoL in social, psychological, environmental, and health domains.

5.
Biomed Res Int ; 2021: 6673427, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33997038

RESUMEN

RESULTS: KIR2DL1 and ILT-2 expression on idNK cells was higher in healthy women than in RPL patients. Sildenafil enhanced NKG2A expression in RPL patients. VEGF concentration was higher in fertile woman idNK cell cultures. idNK cells were more sensitive for necrosis in RPL than in fertile women. SC did not influence VEGF production or idNK cell apoptosis. CONCLUSIONS: A combination of hypoxia, IL-15, and AZA promotes the conversion of pbNK into idNK cells CD56+CD16--expressing KIR receptors and produces VEGF. Alterations in KIR2DL1 and ILT-2 expression as well as impaired VEGF production were associated with RPL. SC affects NKG2A expression on RPL idNK cells. SC had no effect on VEGF release or idNK cell apoptosis.


Asunto(s)
Aborto Habitual , Antígenos CD/análisis , Células Asesinas Naturales , Receptor Leucocitario Tipo Inmunoglobulina B1/análisis , Receptores KIR2DL1/análisis , Factor A de Crecimiento Endotelial Vascular/análisis , Aborto Habitual/sangre , Aborto Habitual/metabolismo , Adulto , Antígenos CD/metabolismo , Apoptosis , Células Cultivadas , Femenino , Humanos , Células Asesinas Naturales/citología , Células Asesinas Naturales/metabolismo , Receptor Leucocitario Tipo Inmunoglobulina B1/metabolismo , Receptores KIR2DL1/metabolismo , Factor A de Crecimiento Endotelial Vascular/metabolismo
6.
Ginekol Pol ; 92(3): 230-235, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33844242

RESUMEN

OBJECTIVES: The aim was to present an interdisciplinary Guideline of the Urogynecology Section of the Polish Society of Gynecologists and Obstetricians (PSGO) for the use of urodynamics (UDS) in the diagnostic process of patients with lower urinary tract symptoms (LUTS) based on the available literature, expert knowledge, and everyday practice. MATERIAL AND METHODS: A review of the literature concerning the use of UDS in women, including current international guidelines and earlier recommendations of the PSGO Urogynecology Section, was conducted. RESULTS: Urodynamic testing allows to make the urodynamic diagnosis which, nevertheless, remains to be the preliminary diagnosis. Medical history, physical examination, and detailed analysis of the previous test results (laboratory, imaging, endoscopic) need to be taken into consideration before making the final diagnosis. Urodynamic testing before surgical treatment of SUI is allowable, but the decision remains at the discretion of the physician. Urodynamic testing is not necessary before primary surgical treatment of uncomplicated SUI, but it has been demonstrated to optimize the therapeutic methods in complicated SUI. The significance of UDS in the diagnostic process of patients with overactive bladder symptoms, voiding dysfunction, and bladder outlet obstruction was discussed. CONCLUSIONS: Urodynamic testing is a vital element of the urogynecological diagnostic process. The scope of UDS should reflect the individual needs and symptoms of each patient and be based on the current guidelines, expert knowledge and experience of the physician, indications, and eligibility, as well as additional test results of the affected patients. Due to formal and legal requirements, PSGO, in this Guideline, wishes to emphasize the need for an individualized approach to both, test performance and result interpretation.


Asunto(s)
Obstrucción del Cuello de la Vejiga Urinaria , Vejiga Urinaria Hiperactiva , Incontinencia Urinaria de Esfuerzo , Femenino , Humanos , Polonia , Obstrucción del Cuello de la Vejiga Urinaria/complicaciones , Incontinencia Urinaria de Esfuerzo/cirugía , Urodinámica
7.
Wideochir Inne Tech Maloinwazyjne ; 15(2): 337-345, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32489495

RESUMEN

INTRODUCTION: Hysteroscopy is the gold standard for diagnosis and treatment of uterine pathologies. The office setting seems to be safe, reducing the anesthesia risks and also decreasing the overall costs of the procedure. Recent literature suggests that hysteroscopy performed without anesthesia may not be as painless as it was previously considered. Moreover, not every patient can be referred for a hysteroscopy in an office setting. AIM: To analyze the factors correlated with a successful hysteroscopy in an office setting. MATERIAL AND METHODS: We analyzed the documentation of 1301 patients who underwent hysteroscopy at our department in the period 2013-2016. The impact of the type of the procedure and the various demographic factors on the need for general anesthesia was assessed. RESULTS: Almost 80% of all hysteroscopies were performed without analgesia in an office setting. The remaining patients underwent a hysteroscopy in general anesthesia. The key aspect for successful office hysteroscopy is the scope of the performed surgery. Over 91% of diagnostic hysteroscopies have been done without analgesia, but only about 30% of extensive endometrial scratching procedures were performed in an office setting. A previous vaginal delivery increases the chances for a successful office hysteroscopy by about 21%, and in the case of diagnostic procedures, multiparous patients were at an about 79% lower risk of analgesia necessity. CONCLUSIONS: It is possible to perform nearly all diagnostic hysteroscopies in an office setting. In the case of operative hysteroscopy, the most crucial factor is the scope of the procedure.

8.
Eur J Obstet Gynecol Reprod Biol ; 239: 30-34, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31163354

RESUMEN

OBJECTIVES: The pelvic organ prolapse (POP) surgery with implantation of anterior transvaginal mesh (e.g. Elevate or Calistar) may provide objective and subjective improvement as compared to traditional POP repair without mesh. Given differences between the Elevate and the Calistar mesh and their different placement methods, some variation inlong-term clinical outcomes of these anterior vaginal mesh procedures can be expected. STUDY DESIGN: The purpose of the study was to compare the 18-month operative success in patients who had undergone anterior POP surgery with either the Calistar (n = 54) or Elevate mesh (n = 50). RESULTS: There were no between-group differences in objective measures of operative efficacy, including POP-Q anterior stage 0 or I (94% for Calistar, 92% for Elevate) and "no descent beyond the hymen" (98% for Calistar, 94% for Elevate). The proportion of patients with subjective measure of operative efficacy (no vaginal bulge symptoms) did not differ between the groups (91% for Calistar, 78% for Elevate). There were no between-group differences in the proportion of women suffering from vaginal exposure, de novo stress urinary incontinence (SUI), de novo overactive bladder (OAB) symptoms, pelvic floor pain or dyspareunia. The operative cure of OAB symptoms was similar in the groups. The proportion of patients with the operative cure of SUI symptoms was significantly higher in the Calistar as compared to the Elevate group. CONCLUSIONS: The results suggestthat the Calistar system offers similar efficacy in the treatment of anterior and both anterior and apical POP as compared to the Elevate. The use of anterior Calistar is associated with some additional benefits, i.e. SUI treatment in patients with concomitant anterior and both anterior and apical POP and SUI symptoms.


Asunto(s)
Procedimientos Quirúrgicos Ginecológicos/instrumentación , Prolapso de Órgano Pélvico/cirugía , Mallas Quirúrgicas/estadística & datos numéricos , Vagina/cirugía , Anciano , Femenino , Procedimientos Quirúrgicos Ginecológicos/estadística & datos numéricos , Humanos , Persona de Mediana Edad , Estudios Retrospectivos
9.
J Assist Reprod Genet ; 36(6): 1281-1289, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31089932

RESUMEN

OBJECTIVE: Our study aimed to investigate the relationship between polymorphisms (Apa1, Bsm1, Fok1, and Cdx2) in the VDR gene as well as AMH and AMHR2 genes and their influence on AMH and 25(OH)D levels in PCOS women. STUDY DESIGN: Seventy-five patients with PCOS and 23 control women were included. Serum AMH and 25(OH)D levels in patients and controls were measured by enzyme-linked immunosorbent assay (ELISA). Polymorphisms in VDR gene Fok1 C/T (rs2228587), Bsm1 A/G (rs1544410), Apa1 A/C (rs7975232), and Cdx2 A/G (rs11568820) polymorphisms as well as AMH G/T (rs10407022) and AMHR2 A/G (rs2002555) were analyzed using real-time PCR. RESULTS: Analysis of the VDR Cdx2 polymorphism showed a significantly higher frequency of the homozygous GG (mutant) genotype in the PCOS group as compared with the control group (p < 0.05). The analysis revealed a statistically significant correlation between the presence of FokI and ApaI polymorphisms and AMH levels in PCOS women (p < 0.05). The presence of mutant genotypes (CT, TT) in the Fok1 and (CA, CC) in the Apa1 polymorphisms were associated with higher AMH level in PCOS women (p < 0.05). No statistically significant correlations between AMH and AMHR2 polymorphisms and AMH level were found. Moreover, there was no correlation between AMH and 25(OH)D levels in the PCOS or in the control group. CONCLUSION: It seems that the elevated AMH level is associated with VDR Fokl and Apal polymorphisms, but not with 25(OH)D levels in PCOS women. Further research is needed to determine the role of VDR polymorphism in AMH level in PCOS.


Asunto(s)
Hormona Antimülleriana/sangre , Síndrome del Ovario Poliquístico/sangre , Receptores de Calcitriol/sangre , Receptores de Péptidos/sangre , Receptores de Factores de Crecimiento Transformadores beta/sangre , Adulto , Hormona Antimülleriana/genética , Femenino , Genotipo , Humanos , Ovulación/genética , Síndrome del Ovario Poliquístico/genética , Síndrome del Ovario Poliquístico/fisiopatología , Polimorfismo de Nucleótido Simple/genética , Receptores de Calcitriol/genética , Receptores de Péptidos/genética , Receptores de Factores de Crecimiento Transformadores beta/genética , Vitamina D/sangre
10.
Biomed Res Int ; 2018: 7104892, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30225262

RESUMEN

Hysteroscopy is a gold standard in 21st-century gynaecology for both diagnosis and treatment procedures of intrauterine pathologies. Miniaturisation of the equipment and better techniques of performing this procedure allowed it to become the gold standard. Nevertheless, hysteroscopy has its limitations, which is the size of the endometrial polyps or submucous myomas. We have invented a new device for the 5Fr working channel hysteroscopes for possessing and resecting intrauterine structures: the cryoprobe. The retrospective cryobiopsy study presented here was conducted at the Department of Gynaecology and Oncological Gynaecology, Military Institute of Medicine in Warsaw, Poland, from October 2017 to January 2018. Its purpose was to assess the usefulness of the new device in office hysteroscopy for the removal of polyps and myomas with a diameter over 10 mm. Thirteen patients with an initial diagnosis of an endometrial polyp or submucous myoma were enrolled in the trial. All procedures took place in day-surgery settings, with a total resection of the pathological intrauterine structure, without complications. The application of the cryoprobe may enhance the usefulness of office hysteroscopy, without extending the procedure. The cryoprobe efficiency is still under research in a bigger group.


Asunto(s)
Histeroscopía , Mioma/cirugía , Pólipos/cirugía , Neoplasias Uterinas/cirugía , Adulto , Anciano , Femenino , Humanos , Persona de Mediana Edad , Embarazo , Estudios Retrospectivos
11.
Neuro Endocrinol Lett ; 37(2): 141-6, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27179578

RESUMEN

OBJECTIVES: The aim of this study was to compare SNP C677T and A1298C in the MTHFR gene and pregnancy outcome in PCOS women. STUDY DESIGN: We investigated 76 PCOS and 56 non-PCOS women. Among PCOS patients 63 were women with a history of recurrent pregnancy loss (RPL) and 13 women were infertile. In non-PCOS group 40 women were RPL and 16 were infertile. We investigated the relationship between SNP in the MTHFR gene and pregnancy loss, homocysteine and AMH concentration in the study groups. RESULTS: DNA analysis of the PCOS and non-PCOS groups for MTHFR C677T and A1298C polymorphism showed no significant association between the groups. We demonstrated an increased miscarriage rate in non-PCOS women with A1298C polymorphism in the MTHFR gene (p=0.042). We found that homocysteine concentration was higher in women with SNP MTHFR A1298C (p=0.046). Moreover, we did not observe any association between the level of homocysteine and the pregnancy outcome in the whole study group. CONSLUSION: It seems that the presence of the MTHFR mutation is not associated with PCOS in the Polish population. However, our results may suggest a correlation between the MTHFR A1298C mutation and RPL in the non-PCOS group.


Asunto(s)
Aborto Habitual/genética , Metilenotetrahidrofolato Reductasa (NADPH2)/genética , Síndrome del Ovario Poliquístico/genética , Polimorfismo de Nucleótido Simple , Femenino , Predisposición Genética a la Enfermedad , Genotipo , Humanos , Oxidorreductasas , Embarazo , Resultado del Embarazo
12.
Neuro Endocrinol Lett ; 37(7): 473-477, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-28326740

RESUMEN

OBJECTIVES: Does addition of Intralipid to sildenafil and enoxaparin immunotherapy improve pregnancy outcome? MATERIALS AND METHOD: Report of a striking case of a patient with history of 4 recurrent pregnancy losses (RPL) and IVF failures. RESULTS: Adding of Intralipid resulted in giving birth to a healthy male baby in the 3th IVF cycle. CONCLUSION: Combination therapy that includes Intralipid may generate successful IVF outcome, although this problem merits further study, especially regarding safety issues.


Asunto(s)
Aborto Habitual/terapia , Enoxaparina/uso terapéutico , Resultado del Embarazo , Citrato de Sildenafil/uso terapéutico , Adulto , Enoxaparina/administración & dosificación , Femenino , Humanos , Embarazo , Citrato de Sildenafil/administración & dosificación , Resultado del Tratamiento
13.
Int Urogynecol J ; 26(12): 1815-20, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26142350

RESUMEN

INTRODUCTION AND HYPOTHESIS: There are few direct comparisons between the first-generation trocar-guided and the second-generation single-incision mesh systems in the treatment of anterior pelvic organ prolapse (POP). Hence, the purpose of this retrospective review was to compare 18-month operative success in female patients who had undergone POP surgery with the anterior Prolift (n = 52) or the anterior Elevate mesh (n = 62). METHODS: Subjective (bulge symptoms) and objective measures (absence of anterior or apical descent beyond the hymen, POP-Q anterior stage 0 or I, no retreatment for POP) were used as the measures of surgical efficacy. Postoperative pelvic floor pain, dyspareunia, de novo overactive bladder (OAB), de novo stress urinary incontinence (SUI), and mesh exposure were addressed as complications of POP surgery. RESULTS: The two groups did not differ with regard to the subjective and objective measures of the operative efficacy. There were no between-group differences in the proportion of women reporting postoperative pelvic floor pain, dyspareunia, de novo SUI, and de novo OAB symptoms (all p values >0.05). The proportion of patients with postoperative vaginal exposure was significantly higher in the Prolift group (7.7 %) than in the Elevate group (0.0 %; p = 0.02). CONCLUSIONS: In conclusion, our results suggest that the use of the Elevate system in patients with anterior compartment prolapse results in fewer mesh erosions, but similar efficacy, compared with the Prolift mesh.


Asunto(s)
Prolapso de Órgano Pélvico/cirugía , Complicaciones Posoperatorias , Mallas Quirúrgicas , Anciano , Femenino , Humanos , Persona de Mediana Edad , Prolapso de Órgano Pélvico/complicaciones , Prolapso de Órgano Pélvico/diagnóstico , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento
14.
Neuro Endocrinol Lett ; 35(4): 322-6, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25038595

RESUMEN

OBJECTIVE: This study was conducted to determine serum anti-Müllerian hormone (AMH) concentration influence on pregnancy outcome. STUDY DESIGN: In this study we investigated sixty one infertile women (aged 27 to 44 years) who were diagnosed and treated between 2011 and 2013. We determine ovarian reserve measured by AMH concentration. Patients were divided in three groups according to their serum AMH concentration (<1 ng/ml; 1-2.5 ng/ml; >2.5 ng/ml respectively). We investigated the relationship between clinical pregnancy rate and AMH concentration. In addition, anti-thyroid antibodies (anti-TG and/or anti-TPO) positivity and insulin concentration were correlated with AMH level and pregnancy outcome in the study groups. RESULTS: We found no statistical differences between AMH concentration regarding number of pregnancies (42.3%; 41.1 %; 38.9% respectively in study groups; p>0.05). The miscarriage rate was highest in women with AMH>2.5 ng/mL (27.3%, 0%, 86% respectively in study groups; p>0.05). We found that anti-thyroid positivity is more frequent in women with lower AMH concentration (23.1%; 11.7%; 5.5% respectively; p>0.05) and patients with lower serum AMH had higher serum insulin concentration (p<0.05). CONCLUSIONS: It seems that AMH concentration might not reflect oocyte quality and the chance of pregnancy, but increased AMH concentration may be associated with negative pregnancy outcome. Moreover, it cannot be excluded that presence of anti-thyroid antibodies and increased insulin serum concentration may be connected to diminished ovarian reserve measured by AMH concentration.


Asunto(s)
Aborto Espontáneo/sangre , Hormona Antimülleriana/sangre , Infertilidad Femenina/sangre , Aborto Espontáneo/clasificación , Adulto , Factores de Edad , Anticuerpos/sangre , Biomarcadores/sangre , Femenino , Humanos , Infertilidad Femenina/clasificación , Insulina/sangre , Valor Predictivo de las Pruebas , Embarazo , Resultado del Embarazo , Hormonas Tiroideas/inmunología
15.
Ginekol Pol ; 84(4): 298-304, 2013 Apr.
Artículo en Polaco | MEDLINE | ID: mdl-23700864

RESUMEN

The biological state of the ovum remains the key element in normal reproduction. Age-related decrease in the number of oocytes, as well as disturbed neuroendocrine function of the ovary and lesions in the uterus, contribute to reduced fertility. Decreasing number of ovarian follicles is accompanied by reduction of their quality including mainly abnormalities of the nucleus (dispersed chromatin, decondensation of chromosomes and abnormalities connected with the spindle apparatus). This results in failed reproduction due to abnormal gametogenesis, fertilization process, early development of the embryo and abnormal implantation. This work describes age-related biochemical mechanisms conditioning molecular changes occurring due to abnormal microenvironment of the ovary; their accumulation leads to aging and to a more rapid apoptosis of the oocyte. There are many theories explaining the causes of oocyte destruction, including abnormal vascularization, oxidative stress, imbalance of free radicals, influence of toxic compounds and genetic changes. Decreased blood perfusion in the microenvironment of a maturating ovum leads to hypoxia and thus to a chain of reactions of oxidative stress. Oxidative imbalance leads to abnormalities of cellular biomolecules. Moreover it is suggested that glycation processes in a cell, leading to the formation of compounds called AGEs (Advanced Glycation End Products), are also responsible for aging of the cells. They contribute directly to protein damage, induce a chain of reactions of oxidative stress, and increase the inflammatory reactions. Recently the role of mitochondria and telomeres in the aging process and loss of reproductive functions has been especially underscored. Moreover this work stresses the prognostic value of clinically used markers evaluating the ovarian reserve. The role of Anti-Müllerian hormone (AMH), follicle-stimulating hormone (FSH), estradiol, inhibin B and antral follicle count (AFC) was presented in this paper.


Asunto(s)
Envejecimiento/fisiología , Infertilidad Femenina/metabolismo , Oocitos/fisiología , Ovario/fisiología , Hormona Antimülleriana/metabolismo , ADN Mitocondrial/metabolismo , Femenino , Humanos , Menopausia/fisiología , Folículo Ovárico/fisiología , Estrés Oxidativo , Telomerasa/metabolismo
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