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1.
Biochim Biophys Acta Mol Basis Dis ; 1865(6): 1389-1401, 2019 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-30771486

RESUMO

Methylglyoxal (MG), a highly reactive dicarbonyl derived from metabolic processes, is the most powerful precursor of advanced glycation end products (AGEs). Glycative stress has been recently associated with ovarian dysfunctions in aging and PCOS syndrome. We have investigated the role of the NAD+-dependent Class III deacetylase SIRT1 in the adaptive response to MG in mouse oocytes and ovary. In mouse oocytes, MG induced up-expression of glyoxalase 1 (Glo1) and glyoxalase 2 (Glo2) genes, components of the main MG detoxification system, whereas inhibition of SIRT1 by Ex527 or sirtinol reduced this response. In addition, the inhibition of SIRT1 worsened the effects of MG on oocyte maturation rates, while SIRT1 activation by resveratrol counteracted MG insult. Ovaries from female mice receiving 100 mg/kg MG by gastric administration for 28 days (MG mice) exhibited increased levels of SIRT1 along with over-expression of catalase, superoxide dismutase 2, SIRT3, PGC1α and mtTFA. Similar levels of MG-derived AGEs were observed in the ovaries from MG and control groups, along with enhanced protein expression of glyoxalase 1 in MG mice. Oocytes ovulated by MG mice exhibited atypical meiotic spindles, a condition predisposing to embryo aneuploidy. Our results from mouse oocytes revealed for the first time that SIRT1 could modulate MG scavenging by promoting expression of glyoxalases. The finding that up-regulation of glyoxalase 1 is associated with that of components of a SIRT1 functional network in the ovaries of MG mice provides strong evidence that SIRT1 participates in the response to methylglyoxal-dependent glycative stress in the female gonad.


Assuntos
Produtos Finais de Glicação Avançada/genética , Oócitos/efeitos dos fármacos , Ovário/efeitos dos fármacos , Aldeído Pirúvico/farmacologia , Sirtuína 1/genética , Animais , Benzamidas/farmacologia , Carbazóis/farmacologia , Catalase/genética , Catalase/metabolismo , Proteínas de Ligação a DNA/genética , Proteínas de Ligação a DNA/metabolismo , Inibidores Enzimáticos/farmacologia , Feminino , Regulação da Expressão Gênica , Produtos Finais de Glicação Avançada/metabolismo , Lactoilglutationa Liase/antagonistas & inibidores , Lactoilglutationa Liase/genética , Lactoilglutationa Liase/metabolismo , Camundongos , Camundongos Endogâmicos , Proteínas Mitocondriais/genética , Proteínas Mitocondriais/metabolismo , Naftóis/farmacologia , Oócitos/citologia , Oócitos/metabolismo , Ovário/citologia , Ovário/metabolismo , Coativador 1-alfa do Receptor gama Ativado por Proliferador de Peroxissomo/genética , Coativador 1-alfa do Receptor gama Ativado por Proliferador de Peroxissomo/metabolismo , Cultura Primária de Células , Aldeído Pirúvico/antagonistas & inibidores , Resveratrol/farmacologia , Transdução de Sinais , Sirtuína 1/metabolismo , Sirtuína 3/genética , Sirtuína 3/metabolismo , Superóxido Dismutase/genética , Superóxido Dismutase/metabolismo , Tioléster Hidrolases/antagonistas & inibidores , Tioléster Hidrolases/genética , Tioléster Hidrolases/metabolismo , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo
2.
Pain Pract ; 19(2): 140-148, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30269411

RESUMO

CONTEXT: The influence of the gonadal hormones on some aspects of the human physiology has been studied with uncertain results. Still a confusion exists in relation to the real effects of the female hormones on the perception of pain. The existing data refer mainly to experimental studies and have provided results not always useful in the clinical practice. DATA SOURCE: This study was designed to detect whether there are differences in the perception of the postoperative pain in women, during two clearly defined phases of hormonal asset: luteal and follicular phases. CONCLUSION: The results of this study have demonstrated that in postoperative female patients pain is perceived significantly more in the luteal phase of the menstrual period, than in the follicular phase. This could suggest that female in child-bearing age should be scheduled for elective surgery preferentially during the follicular phase, unless differently necessary. It would guarantee a more comfortable postoperative period, with reduced necessity of analgesics.


Assuntos
Ciclo Menstrual/fisiologia , Percepção da Dor/fisiologia , Dor Pós-Operatória/fisiopatologia , Adolescente , Adulto , Feminino , Procedimentos Cirúrgicos em Ginecologia/efeitos adversos , Humanos , Laparoscopia/efeitos adversos , Dor Pós-Operatória/etiologia , Adulto Jovem
3.
J Histochem Cytochem ; 66(9): 673-686, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29737911

RESUMO

Collagen and matrix metalloproteinases (MMP) play a pivotal role in the pathophysiology of Pelvic Organ Prolapse (POP) as a switch between type I and III collagen together with a simultaneous activation of MMPs have been observed in the vaginal wall. The aim of this study was to evaluate the Advanced Glycation End (AGE) products, ERK1/2 and transforming growth factor (TGF)-ß/Smad pathway expression in muscularis propria in women with POP compared with control patients. We examined 20 patients with POP and 10 control patients treated for uterine fibromatosis. Immunohistochemical analysis using AGE, RAGE, ERK1/2, Smads-2/3, Smad-7, MMP-3, and collagen I-III, TIMP, and α-SMA were performed. Smad-2/3, Smad-7, AGE, ERK1/2, p-ERK, and p-Smad3 were also evaluated using Western-blot analysis. POP samples from the anterior vaginal wall showed disorganization of the normal muscularis architecture. In POP samples, AGE, ERK1/2, Smad-2/3, MMP-3, and collagen III were upregulated in muscularis whereas in controls, Smad-7 and collagen I were increased. The receptor for AGEs (RAGE) was mild or absent both in controls and prolapse. We demonstrated the involvement of these markers in women with POP but further studies are required to elucidate if the overexpression of these molecules could play a crucial role in the pathophysiology of POP disease.


Assuntos
Produtos Finais de Glicação Avançada/análise , Proteínas Quinases Ativadas por Mitógeno/análise , Prolapso de Órgão Pélvico/patologia , Proteínas Smad/análise , Fator de Crescimento Transformador beta/análise , Feminino , Humanos , Imuno-Histoquímica
4.
Cancer Biol Ther ; 19(8): 722-734, 2018 08 03.
Artigo em Inglês | MEDLINE | ID: mdl-29580188

RESUMO

It has become clear that non-tumor cells in the microenvironment, especially fibroblasts, actively participate in tumor progression. Fibroblasts conditioned by tumor cells become "activated" and, as such, are identified as CAFs (cancer-associated fibroblasts). These CAFs remodel the tumor stroma to make it more favourable for cancer progression. The aim of this work was to verify whether EVs (extracellular vesicles - whose role as mediators of information between tumor and stromal cells is well known) released from human ovarian cancer cells were able to activate fibroblasts. EVs isolated from SKOV3 (more aggressive) and CABA I (less aggressive) cells were administered to fibroblasts. The consequent activation was supported by morphological and molecular changes in treated fibroblasts; XTT assays, zymographies, wound healing tests and invasion assays also highlighted higher proliferation, motility, invasiveness and enzyme expression. The secretome of these "activated" fibroblasts was, in turn, able to modulate the responses (proliferation, motility and invasion) of fibroblasts, and of tumor and endothelial cells. These findings support the idea that ovarian cancer cells can modulate fibroblast behaviour through the release of EVs, activating them to a CAFs-like state; the latter are able, in turn, to stimulate the surrounding cells. EVs from SKOV3 rather than from CABA I seem to be more efficient in some processes.


Assuntos
Vesículas Extracelulares/metabolismo , Fibroblastos/metabolismo , Neoplasias Ovarianas/metabolismo , Fibroblastos Associados a Câncer/metabolismo , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Células Endoteliais/metabolismo , Vesículas Extracelulares/ultraestrutura , Feminino , Humanos , Neoplasias Ovarianas/patologia , Microambiente Tumoral
5.
Hum Reprod Update ; 24(3): 267-289, 2018 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-29447380

RESUMO

BACKGROUND: Sirtuins (SIRT1-7) are a family of NAD+-dependent deacetylases that catalyze post-translational modifications of proteins. Together, they respond to metabolic challenges, inflammatory signals or hypoxic/oxidative stress, and are associated with aging and longevity. The role of Sirtuins in the regulation of fertility emerged in 2003 when a defective reproductive phenotype was observed in SIRT1-null mice. Although studies on Sirtuins in reproductive biology have been increasing in the last years, a recent comprehensive update on this issue is still lacking. OBJECTIVE AND RATIONALE: This review is aimed to provide knowledge on the activation mechanism and cellular role of Sirtuins and to give an update of the rapid development of Sirtuin research in female and male reproduction under physiological and pathological conditions. The final goal is to assess whether strategies aimed to improve Sirtuin expression or activity could have therapeutic potential for infertility associated with polycystic ovarian syndrome (PCOS), endometriosis, diabetes, xenobiotic stress and aging. SEARCH METHODS: The MEDLINE database was examined for peer-reviewed original articles. The following keywords were searched: 'Sirtuin', 'ovary', 'oocyte', 'ovarian follicle', 'embryo', 'endometrium', 'sperm' and 'testis'. These keywords were combined with other search phrases relevant to the topic. OUTCOMES: Our knowledge of Sirtuins in reproductive functions has grown exponentially over the last few years. The majority of the work carried out so far has focused on SIRT1 with a prevalence of studies on female reproduction. Numerous studies have provided evidence that down-regulation of SIRT1 is associated with physiological or pathological reduction of ovarian reserve. SIRT1 has also been shown to regulate proliferation and apoptosis in granulosa cells whereas SIRT3 was found to promote luteinisation. Biochemical modulation of Sirtuin activity has led to discoveries of the roles of SIRT1, SIRT2, SIRT3 and SIRT6 in improving the competence of oocytes grown or matured in vitro in humans and animal models. Recently, SIRT1, SIRT2 and SIRT3 have emerged as protectors of oocyte against postovulatory aging. Transgenic models provide strong evidence that SIRT1 is involved in spermatogenesis by influencing specific functions of male germ cell, Sertoli cells and Leydig cells. When our attention moves to post-fertilization events, maternally derived SIRT3 appears crucial in the protecting early embryos against stress conditions. Finally, increasing SIRT1 activity may have the potential to ameliorate fertility in PCOS, diabetes, endometriosis, xenobiotic stress and aging. Overall, these effects have been ascribed to Sirtuin-mediated regulation of energy homoeostasis, mitochondrial biogenesis, chromatin remodelling and protection against oxidative stress. WIDER IMPLICATIONS: The present review provides challenges and opportunities to stimulate research and exploit Sirtuin-based signalling as diagnostic tools and potential targets for therapeutic applications in reproductive medicine.


Assuntos
Infertilidade Feminina/metabolismo , Infertilidade Masculina/metabolismo , Oócitos/metabolismo , Transdução de Sinais , Sirtuínas/metabolismo , Animais , Feminino , Humanos , Masculino , Camundongos , Folículo Ovariano/metabolismo , Reserva Ovariana , Estresse Oxidativo , Espermatogênese
6.
Hum Fertil (Camb) ; 21(2): 106-111, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28975815

RESUMO

The aim of this study was to evaluate accuracy, tolerability and side effects of office hysteroscopic-guided chromoperturbations in infertile women without anaesthesia. Forty-nine infertile women underwent the procedure to evaluate tubal patency and the uterine cavity. Women with unilateral or bilateral tubal stenosis at hysteroscopy with chromoperturbation, and women with bilateral tubal patency who did not conceive during the period of six months, underwent laparoscopy with chromoperturbation. The results obtained from hysteroscopy and laparoscopy in the assessment of tubal patency were compared. Sensitivity, specificity, accuracy, positive-predictive value and negative-predictive value were used to describe diagnostic performance. Pain and tolerance were assessed during procedure using a visual analogue scale (VAS). Side effects or late complications and pregnancy rate were also recorded three and six months after the procedure. The specificity was 87.8% (95% CI: 73.80-95.90), sensitivity was 85.7% (95% CI 57.20-98.20), positive and negative predictive values were 70.6% (95% CI: 44.00-89) and 94.7% (95% CI: 82.30-99.40), respectively. Pregnancy rate (PR) within six months after performance of hysteroscopy with chromoperturbation was 27%. Office hysteroscopy-guided selective chromoperturbation in infertile patients is a valid technique to evaluate tubal patency and uterine cavity.


Assuntos
Testes de Obstrução das Tubas Uterinas/métodos , Histeroscopia/métodos , Infertilidade Feminina/diagnóstico , Adulto , Estudos de Viabilidade , Feminino , Humanos , Gravidez , Taxa de Gravidez , Sensibilidade e Especificidade
7.
Oxid Med Cell Longev ; 2017: 8928604, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29270246

RESUMO

Cancer therapies are associated with increased infertility risk due to accelerated reproductive aging. Oxidative stress (OS) is a potential mechanism behind ovarian toxicity by cyclophosphamide (CPM), the most ovotoxic anticancer drug. An important sensor of OS is SIRT1, a NAD+-dependent deacetylase which regulates cellular defence and cell fate. This study investigated whether the natural carotenoid crocetin and the synthetic compound AS101 protect the ovary against CPM by modulating SIRT1 and mitochondrial markers. We found that the number of primordial follicles of female CD1 mice receiving crocetin plus CPM increased when compared with CPM alone and similar to AS101, whose protective effects are known. SIRT1 increased in CPM mouse ovaries revealing the occurrence of OS. Similarly, mitochondrial SIRT3 rose, whilst SOD2 and the mitochondrial biogenesis activator PGC1-α decreased, suggesting the occurrence of mitochondrial damage. Crocetin and AS101 administration prevented SIRT1 burst suggesting that preservation of redox balance can help the ovary to counteract ovarian damage by CPM. Decreased SIRT3 and increased SOD2 and PGC1-α in mice receiving crocetin or AS101 prior to CPM provide evidence for mitochondrial protection. Present results improve the knowledge of ovarian damage by CPM and may help to develop interventions for preserving fertility in cancer patients.


Assuntos
Carotenoides/uso terapêutico , Ciclofosfamida/efeitos adversos , Mitocôndrias/metabolismo , Ovário/efeitos dos fármacos , Sirtuína 1/metabolismo , Telúrio/uso terapêutico , Animais , Feminino , Humanos , Camundongos , Ovário/metabolismo , Vitamina A/análogos & derivados
8.
J Psychosom Obstet Gynaecol ; 38(4): 310-316, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28635530

RESUMO

INTRODUCTION: To evaluate the impact of voluntary termination of pregnancy (VTOP) on the psycho-sexological well-being of females before/six months after the abortion. METHODS: A sample of 194 women was recruited from three obstetrics and gynaecological divisions. The women were evaluated for the variables "sexual functioning" with the Female Sexual Function Index (FSFI), "depression" with the Beck Depression Inventory (BDI-II), and "anxiety state" with the Self-Rating Anxiety Scale (SAS) at time 0 (the beginning of the abortion procedure) and time 1 (six months after the abortion). Since 24 women refused to fill out the questionnaires, the final sample was composed of 170 women. RESULTS: The women showed a slight although significant improvement in the mean FSFI score from time 0 (16.7 ± 12.9) to time 1 (20.9 ± 13.8) (p < 0.001) which paralleled with a slight decrease in the incidence of clinically significant sexual dysfunction [49% (84/170) (time 0) versus 34.1% (58/170) (time 1)], (McNemar's test; p = 0.0241). The sub-group of younger women (18-25) showed a lesser increase in FSFI score from time 0 to time 1. In addition, both depression (p = 0.048) and anxiety (p < 0.001) significantly decreased over time. However, the female sexuality remained impaired since more than two thirds (69.5%) of women were sexually dysfunctional six months after VTOP. DISCUSSION: Voluntary TOP may influence the sexuality of younger females differently from how it influences that of older women. Hence, the sexuality of younger female should be regularly supervised in follow-up examinations.


Assuntos
Aborto Induzido/psicologia , Emoções , Saúde Mental , Comportamento Sexual/psicologia , Adolescente , Adulto , Fatores Etários , Ansiedade/psicologia , Depressão/psicologia , Feminino , Humanos , Gravidez , Adulto Jovem
9.
Pain Physician ; 19(8): 583-591, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27906937

RESUMO

BACKGROUND: The international literature is unclear regarding the analgesic efficacy of the transversus abdominis plane block (TAPB) after a Caesarean section (CS). OBJECTIVES: The aim of this study was to determine whether a correctly performed ultrasound-guided TAPB (USG-TAPB) could provide better control of acute postoperative pain during the first 72 hours after CS and if it could provide a faster postoperative recovery. STUDY DESIGN: A double-blind, randomized, controlled clinical trial on pregnant women who underwent CS. SETTING: Pain clinic and Anesthesia and Intensive Care Unit in an academic hospital. METHODS: A double-blind, randomized, controlled study was conducted with 96 patients who underwent CS. The patients in both groups received subarachnoid anesthesia (SAB) with 13 mg of 0.5% isobaric levobupivacaine. The patients were randomized so that some received USG-TAPB with local anesthetic, and the remainder received USG-TAPB with saline. The patients' demographic information and data regarding anesthesia, hemodynamic changes, side effects, acute rest and incident postoperative pain, painkiller consumption, recovery time of bowel function, and the time of hospital discharge were recorded. RESULTS: Our data reinforce the assumption that if TAP block is performed correctly and is part of a multimodal analgesic scheme, effective pain control is possible both for somatic and visceral acute pain. Furthermore, the need for painkillers is reduced, and their related side effects are moderate, yielding a positive benefit/cost ratio. LIMITATIONS: USG-TAPB provides good analgesia for acute postoperative somatic pain, but opiates were still needed for the management of visceral acute postoperative pain. CONCLUSIONS: These results could confirm the assumption that the correct performance of an USG-TAPB as part of a multimodal analgesic treatment could represent a viable alternative to common analgesic procedures performed for acute postoperative pain control after a CS.Key words: Bowel function, Caesarian section, incident pain, local anesthetics, multimodal analgesic treatment, postoperative recovery, rest pain, ultrasound-guided TAP block.


Assuntos
Cesárea , Bloqueio Nervoso , Dor Pós-Operatória/tratamento farmacológico , Músculos Abdominais , Adulto , Analgésicos Opioides , Anestésicos Locais , Método Duplo-Cego , Feminino , Humanos , Gravidez , Ultrassonografia de Intervenção
10.
PPAR Res ; 2016: 4612306, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27559343

RESUMO

Reproductive functions may be altered by the exposure to a multitude of endogenous and exogenous agents, drug or environmental pollutants, which are known to affect gene transcription through the peroxisome proliferator-activated receptors (PPARs) activation. PPARs act as ligand activated transcription factors and regulate metabolic processes such as lipid and glucose metabolism, energy homeostasis, inflammation, and cell proliferation and differentiation. All PPARs isotypes are expressed along the hypothalamic-pituitary-gonadal axis and are strictly involved in reproductive functions. Since female fertility and energy metabolism are tightly interconnected, the research on female infertility points towards the exploration of potential PPARs activating/antagonizing compounds, mainly belonging to the class of thiazolidinediones (TZDs) and fibrates, as useful agents for the maintenance of metabolic homeostasis in women with ovarian dysfunctions. In the present review, we discuss the recent evidence about PPARs expression in the hypothalamic-pituitary-gonadal axis and their involvement in female reproduction. Finally, the therapeutic potential of their manipulation through several drugs is also discussed.

11.
J Cell Physiol ; 231(4): 908-14, 2016 04.
Artigo em Inglês | MEDLINE | ID: mdl-26332656

RESUMO

Controlled ovarian stimulation (COS) leading to ovulation of multiple follicles is a crucial aspect of biomedical infertility care. Nevertheless, biomarkers useful for COS management are still lacking. Peroxisome proliferator-activated receptors (PPARs) are nuclear hormone receptors relevant to steroid metabolism in granulosa cells (GCs). We investigated whether PPARs and their steroidogenic targets were differentially expressed in GCs differentiated under different recombinant or urinary gonadotropin preparations. GCs from women subjected to COS with r-hFSH, r-hFSH/r-hLH, or hMG-HP were processed to assess expression of PPARα, PPARß/δ, PPARγ, and steroidogenic enzymes under PPAR modulation. As an evidence of their activation, all PPAR isotypes with their coactivators, the retinoic-X-receptors (RXRs), localized in the nucleus. When GCs from r-hFSH/r-hLH group were compared with r-hFSH, a significant reduction of PPARα protein was observed. By contrast, an increase of PPARß/δ at both protein and mRNA levels along with that of PPARγ protein were detected. The steroidogenic enzymes 17ßHSD IV, 3ßHSD II, and HMG-CoA red were downregulated in the r-hFSH/r-hLH group in comparison to r-hFSH unlike CYP19A1 that remained unchanged. In GCs from urinary FSH-LH stimulation (hMG-HP), PPARα was more expressed in comparison with r-hFSH/r-hLH group. Likewise, 3ßHSD II and 17ßHSD IV were increased suggesting that hMG-HP partially mimicked r-hFSH/r-hLH effects. In summary, transcript analysis associated to protein investigation revealed differential effects of COS protocols on PPARs and their steroidogenic targets in relation to LH and gonadotropin source. These observations candidate PPARs as new biomarkers of follicle competence opening new hypotheses on COS effects on ovarian physiology. J. Cell. Physiol. 231: 908-914, 2016. © 2015 Wiley Periodicals, Inc.


Assuntos
Células da Granulosa/metabolismo , Hormônios/metabolismo , Folículo Ovariano/metabolismo , Indução da Ovulação , Receptores Ativados por Proliferador de Peroxissomo/metabolismo , Acil Coenzima A/metabolismo , Aromatase/metabolismo , Feminino , Hormônio Foliculoestimulante/farmacologia , Células da Granulosa/efeitos dos fármacos , Humanos , Espaço Intracelular/efeitos dos fármacos , Espaço Intracelular/metabolismo , Hormônio Luteinizante/farmacologia , Folículo Ovariano/efeitos dos fármacos , Transporte Proteico/efeitos dos fármacos , Proteínas Recombinantes/farmacologia , Receptores X de Retinoides/metabolismo , Esteroides/biossíntese
12.
Oncol Rep ; 34(5): 2752-9, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26323210

RESUMO

Investigations into extracellular vesicles (EVs) have significantly increased since their role in physiological and pathological processes has become more clearly understood. Furthermore, it has become increasingly clear that several subpopulations of EVs exist, such as exosomes (EXOs) and microvesicles (MVs). Various methods and techniques used to identify and isolate the specific EVs subpopulations exist. However, these methods should be further elucidated. A deep understanding of the different factors that affect the EVs release may therefore be useful for the standardization of protocols and to establish guidelines for a more adequate analysis and correct inter­laboratory comparison. In the present study, we investigated whether composition and molecular features of EVs altered over time following a trigger stimulus. Starved CABA I cells were stimulated with FBS and conditioned medium was collected after different time intervals (30 min and 4, 8 and 18 h). The dynamic of EVs release was time-dependent, as shown by the results of scanning electron microscopy. Additionally, the time elapsed from the stimulus affected the size distribution (as highlighted by transmission electron microscopy and NanoSight assay), amount (in terms of the number of particles and protein amount) and molecular composition (CD63, HLA, Ago-2, gelatinases, and plasminogen activators) suggesting that, different EVs subpopulations were released at different time intervals following cell stimulation. Collectively, the results suggested that, parameters useful to standardize procedures for EVs isolation, including stimulation time should be considered.


Assuntos
Vesículas Extracelulares/metabolismo , Neoplasias/metabolismo , Técnicas de Cultura de Células , Linhagem Celular Tumoral , Meios de Cultivo Condicionados/farmacologia , Humanos , Fatores de Tempo
13.
Gynecol Endocrinol ; 30(11): 808-12, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25030845

RESUMO

Many evidence support the view that endometriotic cyst may exert detrimental effect on the surrounding ovarian microenvironment so representing a risk to functionality of adjacent follicles. Patients with benign ovarian cyst (endometriotic, follicular and dermoid cysts) subjected to laparoscopic cystectomy were enrolled in the present retrospective study in order to analyze whether endometriotic tissue could negatively affect the surrounding normal ovarian cortex more severely than other ovarian cysts. To this end we carried out immunohistochemistry analysis and comparative determination of the transcription factor FOXO3A, oxidized DNA adduct 8-OHdG (8-hydroxy-2'-deoxyguanosine) and damaged proteins known as AGEs (Advanced Glycation End products) as markers of ovarian stress response and molecular damage. Our results show that all the markers analyzed were present in normal ovarian tissue surrounding benign cysts. We observed higher levels of FOXO3A (15.90 ± 0.28), 8-OHdG (13.33 ± 2.07) and AGEs (12.58 ± 4.34) staining in normal ovarian cortex surrounding endometriotic cysts in comparison with follicular cysts (9.04 ± 0.29, 2.67 ± 2.67, 11.31 ± 2.95, respectively) and dermoid cysts (2.02 ± 0.18, 4.33 ± 2.58 and 10.56 ± 4.03, respectively). These results provide evidence that ovarian endometrioma is responsible for more severe alterations to cellular biomolecules than follicular and dermoid cysts.


Assuntos
Endometriose/metabolismo , Cistos Ovarianos/metabolismo , Ovário/metabolismo , Estresse Oxidativo/fisiologia , 8-Hidroxi-2'-Desoxiguanosina , Adulto , Biomarcadores/metabolismo , Desoxiguanosina/análogos & derivados , Desoxiguanosina/metabolismo , Endometriose/patologia , Feminino , Proteína Forkhead Box O3 , Fatores de Transcrição Forkhead/metabolismo , Produtos Finais de Glicação Avançada/metabolismo , Humanos , Cistos Ovarianos/patologia , Ovário/patologia , Estudos Retrospectivos , Adulto Jovem
14.
J Assist Reprod Genet ; 31(6): 717-24, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24619509

RESUMO

PURPOSE: To understand if repeated cycles (2-4 rounds) of gonadotropin stimulation could affect intracellular localization/content of proteins controlling cell cycle progression in mouse fallopian tubes (FT) and ovaries. METHODS: FT and ovaries of estrous mice (control) and of stimulated mice were analyzed to detect Oct-3/4, Sox-2, p53, ß-catenin, pAKT and cyclin D1 localization/content. Spindles and chromosome alignment were analyzed in ovulated oocytes. RESULTS: After round 4, FT and ovaries of control and stimulated groups showed no differences in Oct-3/4, Sox-2 and ß-catenin localization nor in Oct-3/4, Sox-2, p53, ß-catenin and pAKT contents. Cyclin D1 level increased significantly in FT of treated mice. Oocytes number decreased meanwhile frequency of abnormal meiotic spindles increased with treatments. CONCLUSIONS: Repetitive stimulations affected oocyte spindle morphology but did not induce changes in a set of proteins involved in cell cycle progression, usually altered in ovarian cancer. The significant increase of cyclin D1 in the FT requires further investigation.


Assuntos
Pontos de Checagem do Ciclo Celular/genética , Tubas Uterinas/metabolismo , Ovário/metabolismo , Indução da Ovulação , Animais , Tubas Uterinas/efeitos dos fármacos , Feminino , Regulação da Expressão Gênica no Desenvolvimento/efeitos dos fármacos , Gonadotropinas/administração & dosagem , Camundongos , Ovário/efeitos dos fármacos
15.
Ann Hematol ; 93(4): 557-63, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24048634

RESUMO

In women of fertile age, iron loss consequent to excessive menstrual discharge is by far the most frequent cause of iron-deficient anemia. However, the relationship between menstrual discharge and iron loss is poorly understood. In this prospective study, total menstrual and iron losses were assayed in a large cohort of non-anemic women and women with excessive menstrual blood losses (menorrhagia) in order to provide data useful for intervention. One hundred and five Caucasian women aged 20-45 years were recruited. Blood cell count and serum ferritin (SF) levels were determined in each case before menses. Menstrual fluid losses (MFL) were determined using a standardized pads' weight method. Hematin concentration was assayed by a variant of the Alkaline Hematin Method from which iron concentration was calculated. Mean SF levels were 36.2 (range 8.6-100) ng/ml in healthy women and 6.4 (range 5-14) ng/ml in patients with menorrhagia. Median values of iron lost/cycle were 0.87 mg in healthy women and 5.2 mg in patients with menorrhagia (ranges 0.102-2.569 and 1.634-8.665 mg, respectively, p < 0.001). In women with menorrhagia, iron lost/cycle strongly correlated (0.789, p < 0.001) with MFL. In conclusion, healthy women with normal menses lose, on average, 1 mg iron/cycle. Average iron losses in patients with menorrhagia are, at least in our cohort, on average, five-to-six times higher than normal. Most women with menorrhagia had totally depleted iron stores. Indirect, quantitative evaluation of iron lost with menses may be useful to assess the risk of developing iron-deficient anemia in individual patients.


Assuntos
Anemia Ferropriva/sangue , Eritropoese/fisiologia , Ferro/sangue , Menorragia/sangue , Menstruação/sangue , Adulto , Anemia Ferropriva/diagnóstico , Anemia Ferropriva/epidemiologia , Feminino , Humanos , Menorragia/diagnóstico , Menorragia/epidemiologia , Pessoa de Meia-Idade , Estudos Prospectivos , Adulto Jovem
16.
Reprod Fertil Dev ; 26(4): 562-9, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-23622715

RESUMO

The aim of this study has been to determine the effects of in vivo post-ovulatory ageing (POA) on the distribution of spindle-associated proteins, histone H3/H4 post-translational modifications and on v-akt murine thymoma viral oncogene homolog 1 (Akt) expression levels. To this end, oocytes were retrieved 13, 29 and 33h after human chorionic gonadotrophin (hCG) treatment. The presence and distribution at the meiotic spindle of acetylated tubulin, γ-tubulin, polo kinase-1 and Ser473/Thr308 phosphorylated Akt (pAkt) as well as histone H3 and H4 acetylation and phosphorylation levels were assayed via immunofluorescence. Akt expression levels were determined via reverse transcription-polymerase chain reaction and western blotting analyses. Spindles from oocytes recovered 13h and 29h after hCG treatment showed similar levels of acetylated tubulin but ageing induced: (1) translocation of γ-tubulin from spindle poles to microtubules, (2) absence of Thr308- and Ser473-pAkt in 76% and 30% of oocytes, respectively, and (3) a significant reduction in phosphorylation levels of serine 10 on histone 3. At 29h, a significant decrease in Akt mRNA, but not in pAkt or Akt protein levels, was recorded. By contrast, protein content significantly decreased 33h after hCG. We conclude that POA impairs oocyte viability and fertilisability by altering the expression levels and spindle distribution of proteins that are implicated in cell survival and chromosome segregation. Together, these events could play a role in oocyte apoptosis.


Assuntos
Proteínas de Ciclo Celular/metabolismo , Senescência Celular , Oócitos/enzimologia , Ovulação , Proteínas Proto-Oncogênicas c-akt/metabolismo , Fuso Acromático/enzimologia , Acetilação , Animais , Sobrevivência Celular , Gonadotropina Coriônica/farmacologia , Regulação para Baixo , Feminino , Fármacos para a Fertilidade Feminina/farmacologia , Fertilização , Histonas/metabolismo , Camundongos , Oócitos/efeitos dos fármacos , Ovulação/efeitos dos fármacos , Fosforilação , Processamento de Proteína Pós-Traducional , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Proto-Oncogênicas/metabolismo , Proteínas Proto-Oncogênicas c-akt/genética , RNA Mensageiro/metabolismo , Fuso Acromático/efeitos dos fármacos , Fatores de Tempo , Tubulina (Proteína)/metabolismo , Quinase 1 Polo-Like
17.
Environ Toxicol ; 28(4): 201-6, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21544921

RESUMO

Trifluralin, a herbicide used to protect many arable and horticultural crops, was evaluated for its potential toxicity on the mammalian ovary. To this end, adult female mice were fed or not (control) with a trifluralin-enriched diet (150 mg/kg body weight/day) during gestation and lactation. After weaning, 3-week-old female mice from either trifluralin-treated or control groups were used to evaluate whether the exposure to this herbicide in utero and during lactation could induce stress responses in the ovary. It was found that trifluralin exposure caused a significantly higher level of p53, but not of pRb, in the whole ovary, and in particular in granulosa cells. TUNEL staining showed that herbicide treatment did not increase the apoptotic index of the somatic compartment. Also oocyte fertilizability was unaffected, as metaphase II oocytes retrieved from treated mice were capable of forming male and female pronuclei after in vitro fertilization as control mice. However, trifluralin determined a slightly higher number of oocytes with cytoplasmic degeneration compared with control animals. In conclusion, our results suggest that exposure to a low trifluralin dose during pregnancy and lactation does not impair oocyte quality, but can induce a stress response in ovarian somatic cells.


Assuntos
Herbicidas/toxicidade , Ovário/efeitos dos fármacos , Efeitos Tardios da Exposição Pré-Natal , Trifluralina/toxicidade , Adulto , Animais , Apoptose/efeitos dos fármacos , Dieta , Feminino , Fertilização/efeitos dos fármacos , Células da Granulosa/efeitos dos fármacos , Células da Granulosa/metabolismo , Humanos , Técnicas In Vitro , Lactação , Masculino , Exposição Materna/efeitos adversos , Metáfase , Camundongos , Oócitos/efeitos dos fármacos , Oócitos/metabolismo , Ovário/citologia , Ovário/metabolismo , Gravidez , Proteína do Retinoblastoma/metabolismo , Proteína Supressora de Tumor p53/metabolismo
18.
J Matern Fetal Neonatal Med ; 25(11): 2411-4, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22642571

RESUMO

BACKGROUND: The study arises from the idea of analyzing the reasons why many women in L'Aquila decided to conceive in the months following the 2009 earthquake. In the months from January to June 2011, there was a +27.24% increase in the number of newborns (+ 91) delivered in the Obstetrics and Gynecology Unit of the San Salvatore Hospital of L'Aquila compared to the same six-month period in 2010. METHODS: Between January 2010 and December 2010, 874 women gave birth in L'Aquila. The women living outside of L'Aquila were excluded from the study. The remaining women, namely a sample of 451 individuals, were administered a questionnaire that focused on the level of stress experienced during the earthquake, and subsequently the Brief Cope. RESULTS: After the earthquake there was a +22.64% increase in the number of women who desired a pregnancy. The results of the Brief Cope show that the coping strategies used by the women in L'Aquila were active coping, planning, acceptance and positive reframing. CONCLUSIONS: The desire for motherhood was the main reason accounting for the increase in births that occurred after the earthquake. The decision to have a child was the tangible sign of adaptation to the post-traumatic stress.


Assuntos
Adaptação Psicológica/fisiologia , Coeficiente de Natalidade , Terremotos , Estresse Psicológico , Inquéritos e Questionários , Adolescente , Adulto , Terremotos/estatística & dados numéricos , Feminino , Humanos , Recém-Nascido , Itália/epidemiologia , Pessoa de Meia-Idade , Gravidez , Complicações na Gravidez/diagnóstico , Complicações na Gravidez/epidemiologia , Complicações na Gravidez/psicologia , Complicações na Gravidez/terapia , Resultado da Gravidez/epidemiologia , Projetos de Pesquisa , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Transtornos de Estresse Pós-Traumáticos/terapia , Estresse Psicológico/diagnóstico , Estresse Psicológico/epidemiologia , Estresse Psicológico/terapia , Adulto Jovem
19.
J Pediatr Endocrinol Metab ; 25(1-2): 165-6, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22570969

RESUMO

The 49, XXXXY syndrome is a rare sex chromosome polysomy, first described by Fraccaro and colleagues in 1960. The approximate incidence of this disorder is 1 in 85,000 male births. To date, >100 cases had been published in the literature. Patients with 49, XXXXY syndrome show some peculiar clinical features, such as mental retardation, facial dysmorphism, ambiguous genitalia, and multiple skeletal and cardiac defects. We report a new case of 49, XXXXY syndrome; the first Italian case to our knowledge.


Assuntos
Síndrome de Klinefelter/diagnóstico , Adulto , Feminino , Humanos , Recém-Nascido , Síndrome de Klinefelter/genética , Masculino , Gravidez
20.
J Minim Invasive Gynecol ; 19(3): 360-4, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22387163

RESUMO

STUDY OBJECTIVE: To find a correlation between the waiting time between counseling about and performance of office hysteroscopy and the perception of pain. DESIGN: Observational study (Canadian Task Force classification II-2). SETTING: Academic environment. PATIENTS: Two hundred eighty-four women undergoing hysteroscopy. INTERVENTIONS: Diagnostic hysteroscopy with endometrial biopsy. MEASUREMENTS AND MAIN RESULTS: Before examination, patients were asked to complete 2 forms, the STAI-S (State-Trait Anxiety Inventory, State) and STAI-T (State-Trait Anxiety Inventory, Trait) anxiety scales, for evaluation of their usual anxiety state and their state of anxiety during the examination. Patients were asked to quantify on a visual analog scale the pain felt during the examination. A statistically significant positive correlation, even if weak, was demonstrated between pain and waiting time (r = 0.45; p < .01) but not with the values for the anxiety state (r = 0.06; p = .56) and anxiety trait (r = -0.05; p = .66). Pain (≥4) was significantly associated with waiting time (≥60 minutes) (odds ratio [OR], 5.21; 95% confidence interval [CI], 1.29-35.50), age (OR, 1.57; 95% CI, 0.40-5.87) and menopause (OR, 2.81; 95% CI, 1.10-7.40) but not with STAI-S level (≥34) (OR, 0.87; 95% CI, 0.26-3.12) or STAI-T level (≥34) (OR, 0.65; 95% CI, 0.19-2.32). CONCLUSION: Office hysteroscopy is associated with a level of anxiety that can affect patient tolerability of the procedure. However, factors such as reducing waiting time may have a positive effect on patient compliance, making hysteroscopy easier and thereby increasing its diagnostic and therapeutic potential.


Assuntos
Procedimentos Cirúrgicos Ambulatórios/psicologia , Endométrio/patologia , Histeroscopia/psicologia , Percepção da Dor , Dor/psicologia , Doenças Uterinas/cirurgia , Adulto , Idoso , Ansiedade/psicologia , Biópsia , Feminino , Humanos , Pessoa de Meia-Idade , Medição da Dor/psicologia , Fatores de Tempo , Doenças Uterinas/psicologia
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