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1.
Sci Rep ; 14(1): 13628, 2024 06 13.
Artigo em Inglês | MEDLINE | ID: mdl-38871783

RESUMO

This study intended to investigate if gynecological cancers compromise ovarian function and reduce the success of assisted reproduction techniques (ART). No clinical and molecular data together is available on this issue for gynecological or other organ cancers. Steroidogenic pathways and DNA damage response characteristics of the granulosa cells retrieved from the 39 gynecological cancer patients were analyzed together with their clinical ART characteristics in comparison to 31 control ART patients. Patients with gynecological malignancies were similar to the control IVF patients for the number of mature oocytes retrieved, fertilization rates and embryo development competency. Molecular analyses of the granulosa cells retrieved from these cancer patients did not detect any perturbations in gonadotropin receptor expression and response, sex steroid production, cholesterol utilization/storage and, DNA damage response pattern in comparison to control IVF patients without cancer. This study provides the first reassuring clinical and molecular combined data set that the presence of gynecological malignancy does not appear to have any detrimental effect on clinical IVF cycle characteristics and ovarian functioning at molecular level.


Assuntos
Dano ao DNA , Fertilização in vitro , Neoplasias dos Genitais Femininos , Humanos , Feminino , Fertilização in vitro/métodos , Neoplasias dos Genitais Femininos/genética , Neoplasias dos Genitais Femininos/patologia , Neoplasias dos Genitais Femininos/metabolismo , Adulto , Células da Granulosa/metabolismo , Células da Granulosa/patologia , Gravidez
2.
Int J Gynaecol Obstet ; 165(2): 644-654, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38013507

RESUMO

OBJECTIVE: To propose a new classification system (Urman-Vitale Classification System) for intrauterine adhesions (IUAs) and to evaluate anatomical and fertility outcomes after hysteroscopic adhesiolysis accordingly. METHODS: A retrospective analysis of consecutive patients treated over 11 years by a single operator in a tertiary care hospital. Women with sonographic suspicion of IUAs were scheduled for hysterosalpingography (HSG) and hysteroscopy for confirmation and treatment. IUAs were divided into five classes according to symptoms, ultrasound, HSG findings, and postsurgical hysteroscopic appearance. Hysteroscopic adhesiolysis was performed using a bipolar cutting electrode in an office setting. Evaluated outcomes were restoration of the uterine cavity, clinical pregnancy, pregnancy loss, and live birth rates. RESULTS: A total of 227 patients (479 procedures) were included. Mean number of hysteroscopies increased in frequency with class of adhesions from Class 1 to Class 5 (1.0 ± 0.2 vs 2.3 ± 0.5; P = 0.001). Full restoration of the cavity was achieved in 100% of patients with Class 1 compared with 18.5% for Class 5 (43/43 vs 5/27; P = 0.001). Clinical pregnancy (Class 1 vs Class 4: P = 0.034; 1 vs 5: P = 0.006; 2 vs 5: P = 0.024) and live birth (Class 1 vs Class 4: P = 0.001; 1 vs 5: P = 0.006; 2 vs 4: P = 0.007; 2 vs 5: P = 0.0208) rates decreased with increasing severity of IUAs. Pregnancy loss rate was related to IUA severity (Class 1 vs Class 4: P = 0.012; 1 vs 5: P = 0.003: 2 vs 4: P = 0.014; 2 vs 5: P = 0.021). CONCLUSION: A classification based on symptoms, imaging findings, and postsurgical macroscopic appearance of the uterine cavity could be useful in predicting prognosis and fertility in women with IUAs.


Assuntos
Doenças Uterinas , Gravidez , Humanos , Feminino , Estudos Retrospectivos , Doenças Uterinas/cirurgia , Doenças Uterinas/tratamento farmacológico , Histeroscopia/métodos , Fertilidade , Útero , Aderências Teciduais/cirurgia
3.
Eur J Obstet Gynecol Reprod Biol ; 291: 70-75, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37837936

RESUMO

OBJECTIVES: Pregnant women are vulnerable to the health consequences of earthquakes, experiencing stress and limited access to healthcare. Despite the widespread impact of these events, knowledge about their effects on pregnancy outcomes is scarce and inconsistent. This systematic review and meta-analysis aimed to evaluate the available evidence, estimate the overall effect, and identify key research gaps about earthquake on pregnant women. STUDY DESIGN: A comprehensive search of English-language peer-reviewed articles was conducted using PubMed and Web of Science Core Collection. Various combinations of keywords related to earthquakes and pregnancy outcomes were used. Studies comparing quantitative data on pregnancy outcomes between earthquake-affected and unaffected pregnant women were included. Random and fixed-effects models were used to estimate the pooled effect size. RESULTS: The meta-analysis revealed no significant difference in preterm delivery rates (OR: 1.18; 95 % CI: 0.94-1.47; I2 = 75 %; five studies, 26,365 women) and low birth weight (LBW) infant delivery rates (OR: 1.19; 95 % CI: 0.83-1.71; I2 = 72 %; three studies, 16,127 women) between the earthquake-affected and control groups. However, a statistically significant increase in small-for-gestational-age (SGA) infants was observed in the earthquake-affected group (OR: 1.25; 95 % CI: 1.08-1.43; I2 = 0 %; two studies, 10,238 women). Data on miscarriage and stillbirth rates were not suitable for meta-analysis. CONCLUSIONS: Limited evidence suggests that exposure to earthquakes may be associated with adverse pregnancy outcomes. Further studies are needed to confirm the increased risk of SGA in the affected population and to inform disaster management plans by enhancing our understanding of the adversities associated with earthquake exposure through more comprehensive epidemiologic research.


Assuntos
Terremotos , Nascimento Prematuro , Recém-Nascido , Gravidez , Feminino , Humanos , Resultado da Gravidez/epidemiologia , Natimorto , Recém-Nascido de Baixo Peso , Gestantes , Nascimento Prematuro/epidemiologia , Nascimento Prematuro/etiologia
4.
Mol Hum Reprod ; 29(8)2023 07 31.
Artigo em Inglês | MEDLINE | ID: mdl-37289566

RESUMO

The corpus luteum is the major source of progesterone, the essential hormone for female reproductive function. While progesterone activity has been the subject of extensive research for decades, characterization of non-canonical progesterone receptor/signaling pathways provided a new perspective for understanding the complex signal transduction mechanisms exploited by the progesterone hormone. Deciphering these mechanisms has significant implications in the management of luteal phase disorders and early pregnancy complications. The purpose of this review is to highlight the complex mechanisms through which progesterone-induced signaling mediates luteal granulosa cell activity in the corpus luteum. Here, we review the literature and discuss the up-to-date evidence on how paracrine and autocrine effects of progesterone regulate luteal steroidogenic activity. We also review the limitations of the published data and highlight future research priorities.


Assuntos
Corpo Lúteo , Progesterona , Feminino , Humanos , Gravidez , Corpo Lúteo/metabolismo , Células da Granulosa/metabolismo , Hormônios/metabolismo , Progesterona/metabolismo , Transdução de Sinais
5.
Cell Death Dis ; 14(5): 342, 2023 05 26.
Artigo em Inglês | MEDLINE | ID: mdl-37236920

RESUMO

Autophagy is an evolutionarily conserved process that aims to maintain the energy homeostasis of the cell by recycling long-lived proteins and organelles. Previous studies documented the role of autophagy in sex steroid hormone biosynthesis in different animal models and human testis. Here we demonstrate in this study that sex steroid hormones estrogen and progesterone are produced through the same autophagy-mediated mechanism in the human ovary in addition to the human testis. In brief, pharmacological inhibition and genetic interruption of autophagy through silencing of autophagy genes (Beclin1 and ATG5) via siRNA and shRNA technologies significantly reduced basal and gonadotropin-stimulated estradiol (E2), progesterone (P4) and testosterone (T) production in the ex vivo explant tissue culture of ovary and testis and primary and immortalized granulosa cells. Consistent with the findings of the previous works, we observed that lipophagy, a special form of autophagy, mediates the association of the lipid droplets (LD)s with lysosome to deliver the lipid cargo within the LDs to lysosomes for degradation in order to release free cholesterol required for steroid synthesis. Gonadotropin hormones are likely to augment the production of sex steroid hormones by upregulating the expression of autophagy genes, accelerating autophagic flux and promoting the association of LDs with autophagosome and lysosome. Moreover, we detected some aberrations at different steps of lipophagy-mediated P4 production in the luteinized GCs of women with defective ovarian luteal function. The progression of autophagy and the fusion of the LDs with lysosome are markedly defective, along with reduced P4 production in these patients. Our data, together with the findings of the previous works, may have significant clinical implications by opening a new avenue in understanding and treatment of a wide range of diseases, from reproductive disorders to sex steroid-producing neoplasms, sex steroid-dependent malignancies (breast, endometrium, prostate) and benign disorders (endometriosis).


Assuntos
Ovário , Testículo , Animais , Humanos , Feminino , Masculino , Ovário/metabolismo , Testículo/metabolismo , Progesterona/farmacologia , Gotículas Lipídicas/metabolismo , Autofagia/genética , Lisossomos/metabolismo
6.
Hum Reprod ; 38(1): 113-124, 2023 01 05.
Artigo em Inglês | MEDLINE | ID: mdl-36367834

RESUMO

STUDY QUESTION: Are the IVF parameters and the steroidogenic luteal characteristics of random-start IVF cycles different from conventional cycles in cancer patients? SUMMARY ANSWER: No; controlled ovarian stimulation cycles randomly started at late follicular phase (LFP) and luteal phase (LP) are totally comparable to those conventional IVF cycles started at early follicular phase (EFP) in terms of the expression of the enzymes involved in cholesterol utilization and steroid hormone biosynthesis pathways, gonadotropin receptor expression and, estradiol (E2) and progesterone (P4) production in addition to the similarities in ovarian response to gonadotropin stimulation, oocyte yield, fertilization rate and embryo development competency in cancer patients. WHAT IS KNOWN ALREADY: Random start ovarian stimulation protocols are commonly employed for oocyte and embryo freezing for fertility preservation in cancer patients with time constraints who do not have sufficient time to undergo ovarian stimulation initiated conventionally at EFP of the next cycle. No data is available regarding the molecular steroidogenic features of these cycles analyzed together with the clinical IVF characteristics in cancer patients. We aimed to address this question in this study to help understand how similar the random start cycles are to the conventional start ones. STUDY DESIGN, SIZE, DURATION: A clinical translational research study conducted in 62 cancer patients undergoing IVF for fertility preservation between the years 2017 and 2022. PARTICIPANTS/MATERIALS, SETTING, METHODS: Sixty-two patients who were diagnosed with different types of cancer and underwent ovarian stimulation for oocyte (n = 41) and embryo (n = 21) cryopreservation using GnRH antagonist protocol and human menopausal gonadotropins before receiving cancer treatment/surgery were enrolled in the study. For patients with breast cancer and endometrial cancer the aromatase inhibitor letrozole was used with gonadotropin stimulation. Ovarian stimulation was initiated conventionally at EFP in 22 patients and served as control while it was started at LFP in 20, and mid-LP in the other 20 patients. The luteinized granulosa cells (GCs) were recovered from follicular aspirates during oocyte retrieval procedure and used for the experiments separately for each individual patient. The expression of the enzymes involved in sex steroid biosynthesis (StAR, 3ß-HSD, Aromatase) and cholesterol synthesis (3-hydroxy 3-methylglutaryl Co-A reductase (HMG-Co-A reductase)), utilization (hormone sensitive lipase (HSL)), and storage (Acetyl-Coenzyme A acetyltransferase 1 (ACAT-1)), and gonadotropin receptor expression status were analyzed using immunoblotting and RT-PCR methods. Laser confocal immunofluorescence imaging was applied to analyze and compare the expression patterns of the steroidogenic enzymes and their relation with mitochondria. In vitro E2 and P4 production by the cells were compared among the groups. MAIN RESULTS AND THE ROLE OF CHANCE: Baseline demographic and IVF characteristics of the patients undergoing the conventional start and random start IVF cycles were similar. Duration of gonadotropin stimulation was significantly longer in LFP and LP start cycles in comparison to the conventional ones. Ovarian response to gonadotropin stimulation, mature and total oocyte yield, fertilization and Day 5 blastulation rates of the embryos were comparable between the conventional versus random start cycles. When the luteal GCs of these random start cycles were analyzed we could not find any gross differences between these cycles in terms of the viability index and gross light microscopic morphologic features. More detailed analysis of the molecular luteal characteristics of the cells using RT-PCR, immunoblotting methods revealed that the expression profiles of the gonadotropin receptors, and the enzymes involved in sex steroid biosynthesis and cholesterol synthesis/utilization, and the steroidogenic activity of the luteal GCs of the random start cycles are almost identical to those of the conventional start cycles. Confocal image analysis demonstrated similar patterns in the signal expression profiles of the steroidogenic enzymes and their co-localization within mitochondria. LARGE SCALE DATA: N/A. LIMITATIONS, REASONS FOR CAUTION: Caution should be exercised when interpreting our data and counseling cancer patients seeking fertility preservation because it is still unclear if previous exposure to cancer drugs, different ovarian pathologies or infertility etiologies, previous ovarian surgery and/or any other underlying diseases that are concomitantly present with cancer may cause a difference between conventional and random start stimulation protocols in terms of IVF parameters, luteal function and reproductive outcome. Relatively low number of patients in each stimulation protocol and pooling of luteal GCs for each patient rather than individual analysis of each follicle and oocyte are additional limitations of our study. WIDER IMPLICATIONS OF THE FINDINGS: Our findings provide reassurance that random start protocol offers cancer patients an equally good prospect of fertility preservation as conventional IVF. STUDY FUNDING/COMPETING INTEREST(S): Funded by the School of Medicine, the Graduate School of Health Sciences of Koc University and Koç University Research Center for Translational Medicine (KUTTAM), equally funded by the Republic of Turkey Ministry of Development Research Infrastructure Support Program. All authors declare no conflict of interest. TRIAL REGISTRATION NUMBER: N/A.


Assuntos
Infertilidade , Neoplasias , Feminino , Humanos , Gravidez , Fertilização in vitro/métodos , Progesterona/metabolismo , Corpo Lúteo/metabolismo , Indução da Ovulação/métodos , Oxirredutases , Hormônio Liberador de Gonadotropina , Taxa de Gravidez
7.
Reprod Sci ; 29(10): 2995-2999, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35616876

RESUMO

Oocyte pick-up (OPU) is considered as a minor surgical procedure and complications are very rare when performed by trained physicians. However, data on training standards are limited and assessment of proficiency is challenging. The aim of this study was to show the impact of physician experience on OPU performance in mono-follicular in vitro fertilization (IVF) cycles, using two measurable outcome parameters: successful oocyte retrieval and operative time. Senior physicians (n = 6) had over 15 years of experience and novice physicians (n = 4) had at least 30 procedures under supervision. The study population included 226 mono-follicular cycles. Oocyte retrieval was successful in 179 out 226 procedures (79.2%); seniors and novices achieved similar oocyte retrieval rates (74.1%, 43/58 vs 80.9%, 136/168, p = 0.270). The mean duration of the procedure was 513.4 ± 163.1 (126-769) s. It was significantly shorter with a mean difference of - 117.9 s (95% CI: - 164.4 to - 71.3, p = 0.0001, Hedges g = 1.3) for senior physicians when compared to novices (425.8 ± 146.2 versus 543.7 ± 157.9 s). Novices who start performing OPU independently after 30 supervised procedures perform well in collecting the single oocyte grown in mono-follicular cycles; however, the mean duration of the procedure is relatively longer compared to seniors. After initial training period, physicians have few opportunities to compare themselves with their seniors and peers; periodical reassessment of the technique-which should also cover managing the operation time-would help confirm their own practices.


Assuntos
Recuperação de Oócitos , Médicos , Fertilização in vitro/métodos , Humanos , Recuperação de Oócitos/métodos , Oócitos , Estudos Retrospectivos
8.
Reprod Biomed Online ; 44(4): 747-754, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35232675

RESUMO

RESEARCH QUESTION: What are the trends and changes in patient demographics and practices in treatment with assisted reproductive technology (ART) in Turkey over 25 years? DESIGN: Data on patient demographics, cycle characteristics and clinical outcome of 29,541 cycles in 22,867 women who underwent treatment with ART between 1996 and 2020 were analysed according to calendar years. Regression and interrupted time series analysis were used to assess changes in patient characteristics, trends and effects of interventions on outcome. RESULTS: From 1996 to 2020, the average age of women undergoing treatment with ART increased from 32.1 to 36.0 years (r = 0.96), the proportion of women over 40 more than tripled (9% versus 28.7%; r = 0.97) and the average duration of infertility at presentation dropped from 8.4 to 4 years (r = -0.98) (P < 0.0001, for all). Diminished ovarian reserve became the major indication by 2015. Gonadotrophin-releasing hormone antagonists dominated ovarian stimulation by 2009. The average number of oocytes retrieved decreased from 11.5 to 7.8 (r = -0.86, P < 0.0001). Blastocyst-stage transfers gradually increased, comprising 51% of all transfers in 2020 (r = 0.86, P < 0.0001). The mean number of embryos transferred decreased from 3.9 to 1.5. Clinical pregnancy rates (CPR) per embryo transfer remained stable for fresh transfers (range: 31.6-43.9%) but increased from 13% to 30.3% in cryopreserved transfers. The estimate of effect of blastocyst vitrification was significant (P = 0.001). The multiple birth rate declined from 30.4% to 7.1%. CONCLUSIONS: Remarkable changes were seen in patient demographics, treatment indications, and clinical and laboratory practices. Increased use of single embryo transfer and improvements in cryopreservation techniques helped maintain high CPR while reducing multiple births.


Assuntos
Transferência Embrionária , Transferência de Embrião Único , Transferência Embrionária/métodos , Feminino , Humanos , Nascido Vivo , Masculino , Gravidez , Taxa de Gravidez , Estudos Retrospectivos , Turquia/epidemiologia
9.
Fertil Steril ; 117(5): 1069-1080, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35292154

RESUMO

OBJECTIVE: To investigate whether poor ovarian response in young patients undergoing in vitro fertilization simply involves lesser follicle growth due to diminished ovarian reserve or whether there are intrinsic perturbations in the ovary. DESIGN: A translational research study. SETTING: University Hospital Translational Research Center. PATIENT(S): A total of 40 patients undergoing in vitro fertilization (20 normal and 20 poor responders) with ovarian stimulation using a gonadotropin-releasing hormone antagonist and recombinant follicle-stimulating hormone were included in the study. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Luteal granulosa cells obtained during oocyte retrieval procedures were used for the experiments. Cell culture, quantitative real-time polymerase chain reaction, immunoblotting, confocal time-lapse live-cell imaging, and hormone assays were used. RESULT(S): We tracked the steroidogenic pathway starting from the very initial step of cholesterol uptake to the final step of estradiol and progesterone production in luteal granulosa cells and identified some previously unknown intrinsic defects in the poor responders. Most notably, the expression of low-density lipoprotein receptors was significantly down-regulated and the uptake of cholesterol and its cytoplasmic accumulation and transportation to mitochondria were substantially delayed and reduced in the poor responders. Further, the expression of the steroidogenic enzymes steroidogenic acute regulatory protein, 3ß-hydroxysteroid dehydrogenase, and aromatase as well as gonadotropin receptors was defective, and the response of the cells to exogenous follicle-stimulating hormone and human chorionic gonadotropin was blunted, leading to compromised basal and gonadotropin-stimulated estradiol and progesterone production in the poor responders. CONCLUSION(S): This study demonstrates that poor ovarian response in young individuals should not simply be regarded as lesser follicle growth due to diminished ovarian reserve because the underlying pathogenetic mechanisms appear to be much more complex.


Assuntos
Células Lúteas , Progesterona , Gonadotropina Coriônica , Estradiol/metabolismo , Feminino , Fertilização in vitro , Hormônio Foliculoestimulante , Células da Granulosa/metabolismo , Humanos , Células Lúteas/metabolismo , Indução da Ovulação/métodos , Progesterona/metabolismo
10.
J Turk Ger Gynecol Assoc ; 23(1): 33-37, 2022 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-34100576

RESUMO

OBJECTIVE: Assessment of the optimal number of follicular flushes on retrieval rate and quality of oocytes in mono-follicular in-vitro fertilization (IVF) cycles. MATERIAL AND METHODS: A retrospective analysis of 246 oocyte pick-up procedures in mono-follicular IVF cycles of 226 poor responder women was performed. The primary endpoint was oocyte retrieval rate in the initial aspirate versus subsequent flushing episodes. The secondary endpoints were oocyte maturity, fertilization rates and embryo cleavage. RESULTS: The procedure was successful in 187 cycles (76%), of which 160 metaphase-II oocytes were retrieved. Retrieval rates were similar for natural and modified natural cycles (p=0.595). The initial aspirate provided 54% of the total yield and the rest was obtained from up to four episodes of flushing. Follicular flushing increased oocyte recovery rate from 41.1% to 76%. None of the oocytes retrieved after three flushes fertilized. Oocyte maturity, fertilization and embryo cleavage rates were comparable for oocytes from the initial aspirate and one or two episodes of flushing. Oocytes obtained after the third flushing episode developed into poor quality embryos. CONCLUSION: Flushing confers a benefit for oocyte recover rates in mono-follicular IVF cycles in poor responder women. However, more than three attempts at flushing were not associated with good outcome.

11.
Reprod Sci ; 28(8): 2216-2222, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33449346

RESUMO

To evaluate the expectations, experiences, and fertility awareness status of women who underwent social oocyte cryopreservation. Cohort survey study was conducted at an academic medical center. All women who underwent social oocyte cryopreservation between January 2015 and June 2016 were recruited. One hundred thirty-three women were contacted by phone to participate in a survey. The questionnaire investigated the initial motivation towards freezing, intentions to use cryopreserved oocytes, treatment experience, awareness of fertility and knowledge about chances of having a live birth with their frozen oocytes. The mean age at the time of oocyte freezing was 38.5 ± 2.68 years. The average number of mature oocytes cryopreserved was 5.48 ± 6.6 (1-16). Two major motivations were absence of a male partner (40%) and an anticipated age-related fertility decline (42%). Almost 60% overestimated the chances of natural conception, as well as the success of IVF at the age of 40 years. Half of the oocyte bankers reported that fertility declined between ages 35 and 39, but only 28% of patients estimated the live birth rate per cryopreserved oocyte correctly. Overall 98.8% stated that they would recommend oocyte cryopresevation to a friend, and 72% felt more secure in terms of reproductive potential. Despite comprehensive personalized counseling prior to the start of ovarian stimulation, many women do not seem to have a realistic understanding of reproductive aging. Even though gamete cryopreservation provides some insurance, overestimating the effectiveness of oocyte cryopreservation can also lead to a false sense of security. Clinical Trial Registration: 2016.086.IRB1.006.


Assuntos
Preservação da Fertilidade/métodos , Fertilidade/fisiologia , Oócitos , Indução da Ovulação , Adulto , Criopreservação , Feminino , Preservação da Fertilidade/psicologia , Humanos , Nascido Vivo , Gravidez
12.
Turk J Obstet Gynecol ; 17(3): 196-201, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33072424

RESUMO

OBJECTIVE: To reveal the characteristics and prevalence of dysmenorrhea and Premenstrual syndrome (PMS) among college students and to investigate their impact on their academic performance. MATERIALS AND METHODS: This cross-sectional study was conducted between December 2017 and January 2018 at Koç University, Turkey. An online survey that included multiple-choice and short paragraph questions was prepared. Female students aged between 18 and 27 years were invited with an email to provide online informed consent to proceed to the survey. RESULTS: The final analysis included 352 students. The prevalence of dysmenorrhea was found as 90.1%. Fifty-six percent of the participants reported lower academic performance during menstruation. However, only 32.8% of the students with dysmenorrhea presented to the gynecology clinic. The prevalence of PMS alone and with dysmenorrhea was 71.3% and 65.9%, respectively. The most common symptom among those who reported affected academic performance was depression (prevalence of 27.5%). However, only 19.9% of students with PMS consulted a healthcare professional. CONCLUSION: Symptoms of dysmenorrhea and PMS are generally neglected by students. Quality of life can be affected more than estimated. Considering the reluctance to disclose menstrual disorders, health care providers should be aware of them and ask women about their symptoms during routine visits.

13.
Cell Death Discov ; 6(1): 93, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33042587

RESUMO

Molecular mechanisms underlying luteinization (terminal differentiation of granulosa and theca cells after ovulation) and luteolysis (demise of corpus luteum) are poorly understood in human ovary. Here we report that activin-A, after binding to its cognate receptors induces a functional luteolytic state and reverses luteinization phenotype by downregulating the expression of the steroidogenic enzymes, LH receptor and VEGF and reducing estradiol (E2) progesterone (P4) production and upregulating FSH receptor and cyclin D1 expression in human primary luteinized granulosa cells. Further, this action of activin-A involves downregulation of JNK signaling pathway and is opposite to that of human chorionic gonadotropin (hCG), which acts as a luteotropic hormone and improves luteal function through the activation of JNK pathway in the same cell type. Reversal of luteinization phenotype in luteal granulosa cells by activin-A potentially makes this hormone an attractive candidate for use under certain clinical situations, where induction of luteolysis and rapid reduction of endogenous sex steroid levels are beneficial such as ovarian hyperstimulation syndrome (OHSS), in which the ovaries hyper-respond to gonadotropin stimulation by producing too many growing follicles along with development of ascites, pleural effusion, and hemo-concentrations as a result of increased vascular permeability and leakage of intravascular volume into third spaces. Our work unveils a previously undefined role for activin-A and JNK signaling pathway in human corpus luteum biology, that might have a direct clinical impact in assisted reproductive technologies.

14.
Sci Rep ; 10(1): 15793, 2020 09 25.
Artigo em Inglês | MEDLINE | ID: mdl-32978461

RESUMO

We aimed to answer one key question, that was not previously addressed as to whether serum progesterone (P4-hCG day) and its co-variates (estradiol (E2-hCG day) and the number of retrieved oocytes) of a given cycle can be predictive of the subsequent cycle when both cycles are consecutive and comparable for the stimulation protocol, gonadotropin dose and duration of stimulation. We analyzed such 244 consecutive (< 6 months) IVF cycles in 122 patients with GnRH agonist long protocol and found that P4, E2 and the number of retrieved oocytes significantly vary between the two cycles. Although P4 increased (ranging from 4.7 to 266.7%) in the 2nd cycle in 61 patients, E2 and the number of retrieved oocytes, which are normally positively correlated with P4 paradoxically decreased in the 41% and 37.7% respectively, of these same 61 patients. When a similar analysis was done in the 54 out of 122 patients (44.3%) in whom serum P4 was decreased in the 2nd cycle, the mean decrease in P4 was - 34.1 ± 23.3% ranging from - 5.26 to - 90.1%. E2 and the number of retrieved oocytes paradoxically increased in the 42.3% and 40.7% of these 54 patients respectively. P4 remained the same only in the 7 (5.7%) of these 122 patients. These findings indicate that late follicular phase serum P4 may change unpredictably in the subsequent IVF cycle. The changes are not always necessarily proportional with ovarian response of previous cycle suggesting that growth characteristics and steroidogenic activities of antral cohorts may exhibit considerable cycle to cycle variations.


Assuntos
Fertilização in vitro/métodos , Recuperação de Oócitos/métodos , Ovário/fisiologia , Indução da Ovulação/métodos , Taxa de Gravidez , Progesterona/sangue , Adulto , Feminino , Hormônio Liberador de Gonadotropina/administração & dosagem , Humanos , Fase Luteal , Gravidez , Estudos Retrospectivos
15.
Reprod Biomed Online ; 41(3): 474-482, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32576490

RESUMO

RESEARCH QUESTION: Does anogenital distance (AGD) differ in newborn infants conceived through assisted reproduction technology (ART) compared with those conceived naturally? DESIGN: This case-control study looked at anthropometric and anogenital measurements in 247 male and 200 female newborns born after ART (n = 121) or natural conception (n = 326), within 24 h of birth. Anogenital measurements included distance from the centre of the anus to the anterior clitoris (AGDAC) and to the posterior fourchette (AGDAF) in female infants, and from the centre of the anus to the posterior base of the scrotum (AGDAS) and to the anterior base of the penis (AGDAP) in male infants. RESULTS: ART mothers were older, more likely to be nulliparous and delivered by Caesarean section at an earlier gestational week. AGDAS of male infants was approximately twice the AGDAF of female infants (17.6 ± 5.0 versus 9.1 ± 3.6 mm). AGDAF in female infants conceived by ART compared with those conceived naturally was not significantly different (8.8 ± 3.6 versus 9.3 ± 3.6 mm; P = 0.404). AGDAC were also comparable for both groups (27.4 ± 6.3 versus 27.7 ± 7.1 mm; P = 0.770). In male infants, no significant difference was seen between ART and natural conception groups in terms of AGDAS (17.4 ± 4.6 versus 17.7 ± 5.2 mm, P = 0.742) and AGDAP (37.5 ± 6.6 versus 38.0 ± 6.7 mm, P = 0.589). When adjusted for gestational age, weight, length and head circumference, mode of conception was not associated with differences in any of the anogenital measurements. CONCLUSIONS: AGD measurements in infants conceived by ART are no different from those of infants conceived naturally.


Assuntos
Canal Anal/anatomia & histologia , Clitóris/anatomia & histologia , Fertilização , Técnicas de Reprodução Assistida , Escroto/anatomia & histologia , Antropometria , Estudos de Casos e Controles , Feminino , Humanos , Recém-Nascido , Masculino , Gravidez
16.
Biol Reprod ; 102(6): 1270-1280, 2020 05 26.
Artigo em Inglês | MEDLINE | ID: mdl-32163131

RESUMO

Human chorionic gonadotropin (hCG) is a luteotropic hormone that promotes the survival and steroidogenic activity of corpus luteum (CL) by acting through luteinizing hormone receptors (LHRs) expressed on luteinized theca and granulosa cells (GCs). Therefore, it is used to support luteal phase in in vitro fertilization (IVF) cycles to improve clinical pregnancy rates and prevent miscarriage. However, the molecular mechanism underlying this action of hCG is not well characterized. To address this question, we designed an in vitro translational research study on the luteal GCs obtained from 58 IVF patients. hCG treatment at different concentrations and time points activated c-Jun N-terminal kinase (JNK) pathway and significantly increased its endogenous kinase activity along with upregulated expression of steroidogenic enzymes (steroidogenic acute regulatory protein (stAR), 3ß-Hydroxysteroid dehydrogenase (3ß-HSD)) in a dose-dependent manner in the luteal GCs. As a result, in vitro P production of the cells was significantly enhanced after hCG. When JNK pathway was inhibited pharmacologically or knocked-down with small interfering RNA luteal function was compromised, P4 production was declined along with the expression of stAR and 3ß-HSD in the cells. Further, hCG treatment after JNK inhibition failed to correct the luteal defect and promote P4 output. Similar to hCG, luteinizing hormone (LH) treatment improved luteal function as well and this action of LH was associated with JNK activation in the luteal GCs. These findings could be important from the perspective of CL biology and luteal phase in human because we for the first time identify a critical role for JNK signaling pathway downstream LHR activation by hCG/LH in luteal GCs. SUMMARY SENTENCE: JNK signaling pathway plays a central role in the upregulated expression of the steroidogenic enzymes StAR and 3b-HSD and augmented progesterone production by hCG/LH in human luteal granulosa cells.


Assuntos
Gonadotropina Coriônica/farmacologia , Corpo Lúteo/efeitos dos fármacos , Células da Granulosa/efeitos dos fármacos , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Progesterona/metabolismo , Adulto , Feminino , Fertilização in vitro , Células da Granulosa/metabolismo , Humanos , Hormônio Luteinizante/farmacologia
17.
Sci Rep ; 9(1): 3897, 2019 03 07.
Artigo em Inglês | MEDLINE | ID: mdl-30846784

RESUMO

It has been proposed that intrauterine administration of peripheral blood mononuclear cells (PBMCs) modulates maternal immune response through a cascade of cytokines, chemokines and growth factors to favor implantation. We conducted a meta-analysis to verify the effect of intrauterine PBMC administration on the outcome of embryo transfer in women with recurrent implantation failure (RIF). All relevant trials published in PubMed, Web of Science and Cochrane library databases were searched. Two randomized controlled trials and three cohort studies (1173 patients in total) matched the inclusion criteria. No differences in live birth rates were seen between the PBMC-treated patients and controls (OR: 1.65, 95% CI: 0.84-3.25; p = 0.14; I2: 66.3%). The clinical pregnancy rate was significantly higher in women who received intrauterine PBMCs before embryo transfer compared with those who did not (OR: 1.65, 95% CI: 1.30-2.10; p = 0.001, heterogeneity; I2: 60.6%). Subgroup analyses revealed a significant increase in clinical pregnancy rates with the administration of PBMCs in women with ≥3 previous failures compared with controls (OR: 2.69, 95% CI: 1.53-4.72; p = 0.001, I2: 38.3%). In summary, the data did not demonstrate an association between the administration of PBMCs into the uterine cavity before fresh or frozen-thawed embryo transfer and live birth rates in women with RIF. Whether intrauterine PBMC administration significantly changes live birth and miscarriage rates requires further investigation.


Assuntos
Implantação do Embrião/imunologia , Transferência Embrionária/métodos , Infertilidade Feminina/terapia , Leucócitos Mononucleares/imunologia , Feminino , Humanos , Gravidez , Taxa de Gravidez
18.
Eur J Obstet Gynecol Reprod Biol ; 233: 146-150, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30597339

RESUMO

OBJECTIVE: To compare the awareness of fertility and reproductive aging in women seeking oocyte cryopreservation (OC) with age matched controls. STUDY DESIGN: In this cross-sectional comparative study, women who were candidates for OC due to impending oocyte depletion (n = 81) were compared to age matched reproductive aged women (RAW) (n = 91) and female healthcare professionals (FHP) (n = 82) in terms of awareness about fertility and reproductive aging and knowledge about OC. A study specific 18-item questionnaire was constructed on the basis of previous research on OC and fertility. RESULTS: Awareness of fertility and reproductive aging was similar among groups. The majority of study population was quite realistic of women's most fertile age period whereas they were fairly optimistic about the age that a woman may lose her ability to conceive, monthly fecundity rate, and estimated in vitro fertilization treatment success. OC candidates and FHP were more realistic compared to RAW regarding the age after which the chances of conception is severely diminished (p = 0.005). When the knowledge on OC and willingness to preserve fertility in the future were asked to FHP and RAW, 90% stated that they were aware of the option (93% in FHP versus 88% in RAW, p = 0.006). However, they lacked detailed information about OC and they were unlikely to consider it in the future. CONCLUSIONS: Women seeking OC did not appear to have a better awareness of reproductive ageing compared to the general female population. The results of this study highlight the need for additional awareness campaigns and education on both personal and professional levels.


Assuntos
Envelhecimento/fisiologia , Criopreservação , Preservação da Fertilidade/psicologia , Conhecimentos, Atitudes e Prática em Saúde , Oócitos , Adulto , Estudos Transversais , Feminino , Pessoal de Saúde/psicologia , Humanos , Infertilidade Feminina , Inquéritos e Questionários
19.
Arch Gynecol Obstet ; 299(2): 571-577, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30483887

RESUMO

PURPOSE: The ESHRE Working Group on Poor Ovarian Response defined a set of variables to define poor responders, named as the Bologna Criteria, but several concerns have been raised regarding their applicability and prognostic significance. In order to evaluate the clinical relevance of the criteria, we retrospectively analyzed the ovarian response and live birth rates in women who had consecutive IVF attempts, according to their fulfillment of the criteria. METHODS: The study group comprised 1153 and 288 women who had two and three consecutive ovarian stimulation (OS) cycles between May 2010 and January 2017, respectively. We compared the ovarian response and live birth rates in subsequent IVF attempts of Bologna criteria-defined poor responder women and women who did not fulfill the Bologna criteria. RESULTS: Women who fulfilled the criteria achieved higher rates of poor ovarian response (76.2% vs 14.3% and 60.3% vs 13.4%) and lower live birth rates (14.6% vs 33.3% and 12.9% vs 34.3%) in their second and third OS cycles, respectively (both p < 0.001) compared to women who did not fulfill the criteria. The former group also had lower number of oocytes and lower likelihood of having embryo transfer in their subsequent OS cycles. The criteria were able to predict both ovarian response and clinical outcome in the subsequent cycle in < 40-year-old women, whereas they were predictive only for the ovarian response but not for the clinical outcome in women over 40 years of age, who exhibited very low live birth rates regardless of the fulfillment of the criteria. CONCLUSIONS: The results of this study show that the Bologna criteria are clinically relevant in terms of prediction of ovarian response and clinical outcome in subsequent OS cycles.


Assuntos
Nascido Vivo , Indução da Ovulação/métodos , Adulto , Feminino , Humanos , Gravidez , Prognóstico , Estudos Retrospectivos , Resultado do Tratamento
20.
Hum Reprod ; 34(2): 345-355, 2019 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-30520979

RESUMO

STUDY QUESTION: Are there any differences in the molecular characteristics of the luteal granulosa cells (GC) obtained from stimulated versus non-stimulated (natural) IVF cycles that may help explain the defective luteal phase in the former? SUMMARY ANSWER: Luteal GC of stimulated IVF cycles, particularly those of agonist-triggered antagonist cycles, are less viable ex vivo, express LH receptor and anti-apoptotic genes at lower levels, undergo apoptosis earlier and fail to maintain their estradiol (E2) and progesterone (P4) production in comparison to natural cycle GC. WHAT IS KNOWN ALREADY: Luteal function is defective in stimulated IVF cycles, which necessitates P4 and/or hCG administration (known as luteal phase support) in order to improve clinical pregnancy rates and prevent miscarriage. The luteal phase becomes shorter and menstruation begins earlier than a natural cycle if a pregnancy cannot be achieved, indicative of early demise of corpus luteum (premature luteolysis). Supra-physiological levels of steroids produced by multiple corpora luteae in the stimulated IVF cycles are believed to inhibit LH release directly via negative feedback actions on the hypothalamic-pituitary-ovarian axis resulting in low circulating levels of LH and a defective luteal phase. We hypothesized that some defects in the viability and steroidogenic activity of the luteal GC of the stimulated IVF cycles might contribute to this defective luteal phase in comparison to natural cycle GC. This issue has not been studied in human before. STUDY DESIGN, SIZE, DURATION: A comparative translational research study of ex vivo and in vitro models of luteal GC recovered from IVF patients undergoing natural versus stimulated IVF cycles was carried out. Luteinized GC were obtained from 154 IVF patients undergoing either natural (n = 22) or stimulated IVF cycles with recombinant FSH and GnRH agonist (long) (n = 44), or antagonist protocol triggered conventionally either with recombinant hCG (n = 46) or with a GnRH agonist (n = 42). GC were maintained in vitro for up to 6 days. PARTICIPANTS/MATERIALS, SETTING, METHODS: Cellular viability (YO-PRO-1 staining), the expression of the steroidogenic enzymes, pro-apoptotic genes [Bcl-2-associated death promoter (BAD), Bcl-2-associated X protein (BAX) and Caspase-3 (CASP3)], anti-apoptotic genes [RAC-alpha serine/threonine-protein kinase (AKT-1) and Bcl-2-like protein 2 (BCL2-L2)], LH receptor, vascular endothelial growth factor (VEGF) (using real-time quantitative PCR at mRNA level and western blot immunoprecipitation assay at protein level) and in vitro E2 and P4 production (electrochemiluminescence immunoassay) were compared in GC among the groups. MAIN RESULTS AND THE ROLE OF CHANCE: Natural cycle GC were significantly more viable ex vivo (88%) compared to their counterparts of the stimulated IVF cycles (66, 64 and 37% for agonist and antagonist cycles triggered with hCG and GnRH agonist respectively, P < 0.01). They were also more capable of maintaining their vitality in culture compared to their counterparts from the stimulated IVF cycles: at the end of the 6-day culture period, 74% of the cells were still viable whereas only 48, 43 and 22% of the cells from the agonist and antagonist cycles triggered with hCG and agonist respectively, were viable (P < 0.01). The mRNA expression of anti-apoptotic genes (AKT-1 and BCL2-L2) was significantly lower, while that of pro-apoptotic genes (BAD, BAX and CASP3) was significantly higher in the stimulated cycles, particularly in the agonist-triggered antagonist cycles, compared to natural cycle GC (P < 0.01 for long protocol and antagonist hCG trigger, P < 0.001 for agonist trigger). The expression of steroidogenic enzymes (stAR, SCC, 3ß-HSD and aromatase) and VEGF was significantly higher in the agonist and hCG-triggered antagonist cycles compared to natural cycle GC. Therefore, in vitro E2 and P4 production in cells from the stimulated IVF cycles was significantly higher than their counterparts obtained from the natural cycles in the first 2 days of culture. However, after Day 2, their viability and hormone production began to decline very rapidly with the most drastic decrease being observed in the agonist-triggered cycles. By contrast, natural cycle GC maintained their viability and produced E2 and P4 in increasing amounts in culture up to 6 days. In vitro P production and the mRNA and protein expression of LH receptor, VEGF and 3ß-HSD were most defective in the agonist-triggered antagonist cycles compared to natural and agonist and hCG-triggered antagonist cycles. In vitro hCG treatment of a subset of the cells from the agonist-triggered cycles improved their viability, increased E2 and P4 production in vitro and up-regulated the mRNA expression of anti-apoptotic gene BCL-L2 together with steroidogenic enzymes stAR, SCC, 3B-HSD, LH receptor and VEGF. LARGE SCALE DATA: Not applicable. LIMITATIONS, REASONS FOR CAUTION: The limitations include analysis of luteinized GC only might not reflect the in vivo mechanisms involved in survival and function of the whole corpus luteum; GC recovered during oocyte retrieval belong to a very early stage of the luteal phase and might not be representative; effects of ovulation triggered with hCG may not equate to the endogenous LH trigger; the clinical characteristics of the patients may vary among the different groups and it was not possible to correlate stimulation-related molecular alterations in luteal GC with the clinical outcome, as no oocytes have been utilized yet. Therefore, our findings do not conclusively rule out the possibility that some other mechanisms in vivo may also account for defective luteal function observed in stimulated IVF cycles. WIDER IMPLICATIONS OF THE FINDINGS: Ovarian stimulation is associated with significant alterations in the viability and steroidogenic activity of luteal GC depending on the stimulation protocol and mode of ovulation trigger. Reduced survival and down-regulated expression of 3B-HSD, LH receptor and VEGF leading to compromised steroid production in stimulated cycles, and particularly in the agonist-triggered cycles, may at least in part help explain why the luteal phase is defective and requires exogenous support in these cycles. STUDY FUNDING/COMPETING INTEREST(S): This study was funded by the School of Medicine, the Graduate School of Health Sciences of Koc University and Koç University Research Center for Translational Medicine (KUTTAM), equally funded by the Republic of Turkey Ministry of Development Research Infrastructure Support Program. All authors declare no conflict of interest.


Assuntos
Fertilização in vitro/métodos , Infertilidade Feminina/terapia , Células Lúteas/metabolismo , Fase Luteal/metabolismo , Indução da Ovulação/métodos , Adulto , Sobrevivência Celular/efeitos dos fármacos , Estradiol/metabolismo , Feminino , Fertilização in vitro/efeitos adversos , Humanos , Células Lúteas/efeitos dos fármacos , Fase Luteal/efeitos dos fármacos , Hormônio Luteinizante/metabolismo , Recuperação de Oócitos , Indução da Ovulação/efeitos adversos , Gravidez , Taxa de Gravidez , Progesterona/metabolismo , Receptores do LH/metabolismo , Resultado do Tratamento
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