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1.
Hum Reprod ; 32(12): 2474-2484, 2017 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-29087515

RESUMO

STUDY QUESTION: Is the phosphoinositol 1,3-kinase/protein kinase B (PI3K/AKT) pathway expression profile in cumulus cells (CCs) a potential marker of oocyte competence and predictive of pregnancy outcome? SUMMARY ANSWER: Eleven genes (AKT1, ARHGEF7, BCL2L1, CCND1, E2F1, HRAS, KCNH2, PIK3C2A, SHC1, SOS1 and SPP1) in the PI3K/AKT pathway were significantly down-regulated in CCs from oocytes that went on to produce a pregnancy compared to CCs associated with a negative outcome. WHAT IS KNOWN ALREADY: The PI3K/AKT pathway plays a pivotal role in the interdependence and continuous feedback between the oocyte and CCs. STUDY DESIGN SIZE, DURATION: The expression analysis of 92 transcripts in the PI3K/AKT pathway in CCs from patients with negative or positive pregnancy outcome, after single embryo transfer, was performed. Mouse CCs target gene expression was conducted to associate the expression profile of PI3K/AKT pathway to oocyte developmental profile. PARTICIPANTS/MATERIALS, SETTING, METHODS: Fifty-five good prognosis IVF patients who had been referred to IVF or intracytoplasmic sperm injection treatment for male-factor infertility or tubal disease were enroled. CCs from single cumulus-oocyte complexes (COCs) from 16 patients who underwent a single embryo transfer were analyzed. Twenty-five CD-1 mice were used to assess gene expression in CCs associated with oocytes with different competence in relation to hCG priming. A total 220 human COCs were collected. The RNA extracted from CCs of 16 selected patients was used to analyze PI3K/AKT pathway gene expression employing a 96-well custom TaqMan Array. Expression data of CCs associated to positive IVF outcome were compared to data from negative outcome samples. Mice were sacrificed after 9, 12, 15, 21 and 24 h post-hCG administration to obtain CCs from MII oocytes with different developmental competence. Akt1, Bcl2l2 and Shc1 expression were tested in the collected mouse CCs. In addition, the expression of upstream regulator ESR1, the gene encoding for the oestrogen receptor ERß, and the downstream effectors of the pathway FOXO1, FOXO3 and FOXO4 was evaluated in human and mouse samples. MAIN RESULTS AND THE ROLE OF CHANCE: Transcripts involved in the PI3K Signaling Pathway were selectively modulated according to the IVF/ICSI outcome of the oocyte. Eleven transcripts in this pathway were significantly down-regulated in all samples of CCs from oocytes with positive when compared those with a negative outcome. These outcomes were confirmed in mouse CCs associated with oocytes at different maturation stages. Expression data revealed that the down-regulation of ESR1 could be related to oocyte competence and is likely to be the driver of expression changes highlighted in the PI3K/AKT pathway. LIMITATIONS REASONS FOR CAUTION: Small sample size and retrospective design. WIDER IMPLICATIONS OF THE FINDINGS: The CCs expression profile of PI3K/AKT signaling genes, disclosed a specific CCs gene signature related to oocyte competence. It could be speculated that CCs associated with competent oocytes have completed their role in sustaining oocyte development and are influencing their fate in response to metabolic and hormonal changes by de-activating anti-apoptotic signals. STUDY FUNDING/COMPETING INTEREST(S): Supported by Merck Serono an affiliate of Merck KGaA, Darmstadt, Germany (research grant for the laboratory session; Merck KGaA reviewed the manuscript for medical accuracy only before journal submission. The authors are fully responsible for the content of this manuscript, and the views and opinions described in the publication reflect solely those of the authors). The authors declare no conflict of interest.


Assuntos
Células do Cúmulo/metabolismo , Regulação da Expressão Gênica no Desenvolvimento , Oócitos/citologia , Fosfatidilinositol 3-Quinases/genética , Proteínas Proto-Oncogênicas c-akt/genética , Adulto , Animais , Proliferação de Células , Sobrevivência Celular , Regulação para Baixo , Feminino , Fertilização in vitro , Perfilação da Expressão Gênica , Humanos , Camundongos , Prognóstico , Transdução de Sinais , Injeções de Esperma Intracitoplásmicas
2.
Gynecol Endocrinol ; 33(2): 109-112, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27908215

RESUMO

It is a known fact that abnormal seminal liquid specimens contain abnormal amounts of oxygen free radicals and reactive oxygen species (ROS), and that the use of antioxidant molecules both in vivo and in vitro leads to improvement of semen quality in terms of motility, reduction in DNA damage, with obvious consequences on the fertilization potential. Myo-inositol has been observed to have anti-oxidant properties and be present in much greater concentrations specifically in seminal liquid than in the blood. Moreover, there seems to be a direct relationship between myo-inositol and mitochondrial membrane potential (MMP) and sperm motility. Studies performed in vivo have demonstrated that a dietary supplementation with myo-inositol in men undergoing assisted reproduction techniques may improve sperm quality and motility in oligoasthenospermia (OAT) patients. In the following study we utilized myo-inositol in vitro to verify its effect on semen quality in both normal and OAT patients undergoing in vitro fertilization (IVF) with respect to standard sperm medium. In vitro incubation of seminal liquid carried out using myo-inositol (Andrositol-Lab, Lo.Li. Pharma-Roma, Italy) at a concentration of 15 µl/ml improved progressive motility in both normospermia and OAT subjects. In our opinion, myo-inositol may prove to be a useful strategy to improve sperm preparation for clinical use in IVF.


Assuntos
Astenozoospermia/tratamento farmacológico , Fertilização in vitro/métodos , Inositol/farmacologia , Oligospermia/tratamento farmacológico , Motilidade dos Espermatozoides/efeitos dos fármacos , Complexo Vitamínico B/farmacologia , Adulto , Humanos , Masculino
3.
Gynecol Endocrinol ; 29(1): 79-82, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22835042

RESUMO

INTRODUCTION: Laparoscopic myomectomy has recently gained wide acceptance but this procedure remains technically highly demanding and concerns have been raised about the increased blood loss and an higher risk of postoperative uterine rupture of the pregnant uterus. OBJECTIVE: The aim of the present study is to evaluate the fertility and endocrine outcome in women underwent robot-assisted laparoscopic myomectomy (RALM). METHODS: Data from 48 RALM performed in our department between the years 2007 and 2011 have been collected. Conception rate, abortion rate, incidence of feto-maternal morbidity or severe pregnancy and labor-related complications were reported; FSH and AMH levels and ultrasound valuation of AFC has been made before and 6 months after operation. Number of cesarean sections and vaginal deliveries were described. RESULTS: The average age of the patients was 35 years and median Body Mass Index was 23 kg/m(2) (range 18-35 kg/m(2)). Seven women (13%) became pregnant after RALM with eight pregnancies. One pregnancy is actually on going; there were six deliveries with caesarian section and one spontaneous delivery. No spontaneous abortions. No uterine ruptures occurred. No significant modification of ovarian function was found after myomectomy. CONCLUSION: RALM seems to have a favorable impact on the reproductive outcome of young patients with no impact on the ovarian function.


Assuntos
Fertilidade/fisiologia , Leiomioma/cirurgia , Complicações Pós-Operatórias/epidemiologia , Robótica , Miomectomia Uterina/métodos , Neoplasias Uterinas/cirurgia , Aborto Espontâneo/epidemiologia , Aborto Espontâneo/prevenção & controle , Adulto , Cesárea/estatística & dados numéricos , Sistema Endócrino/fisiologia , Feminino , Humanos , Incidência , Infertilidade Feminina/epidemiologia , Infertilidade Feminina/prevenção & controle , Leiomioma/epidemiologia , Morbidade , Complicações do Trabalho de Parto/epidemiologia , Complicações do Trabalho de Parto/prevenção & controle , Ovário/fisiologia , Complicações Pós-Operatórias/prevenção & controle , Gravidez , Taxa de Gravidez , Miomectomia Uterina/efeitos adversos , Miomectomia Uterina/instrumentação , Neoplasias Uterinas/epidemiologia
4.
Gynecol Endocrinol ; 29(4): 375-9, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23336594

RESUMO

OBJECTIVE: To evaluate the effects the administration of myo-inositol (MYO) on hormonal parameters in a group of polycystic ovary syndrome (PCOS) patients. DESIGN: Controlled clinical study. SETTING: PCOS patients in a clinical research environment. PATIENTS: 50 overweight PCOS patients were enrolled after informed consent. INTERVENTIONS: All patients underwent hormonal evaluations and an oral glucose tolerance test (OGTT) before and after 12 weeks of therapy (Group A (n»10): MYO 2 g plus folic acid 200 mg every day; Group B (n»10): folic acid 200 mg every day). Ultrasound examinations and Ferriman-Gallwey score were also performed. MAIN OUTCOME MEASURES: Plasma LH, FSH, PRL, E2, 17OHP, A, T, glucose, insulin, C peptide concentrations, BMI, HOMA index and glucose-to-insulin ratio. RESULTS: After 12 weeks of MYO administration plasma LH, PRL, T, insulin levels and LH/FSH resulted significantly reduced. Insulin sensitivity, expressed as glucose-to-insulin ratio and HOMA index resulted significantly improved after 12 weeks of treatment. Menstrual cyclicity was restored in all amenorrheic and oligomenorrheic subjects. No changes occurred in the patients treated with folic acid. CONCLUSIONS: MYO administration improves reproductive axis functioning in PCOS patients reducing the hyperinsulinemic state that affects LH secretion.


Assuntos
Ácido Fólico/uso terapêutico , Inositol/uso terapêutico , Síndrome do Ovário Policístico/tratamento farmacológico , Glicemia , Índice de Massa Corporal , Peptídeo C/sangue , Quimioterapia Combinada , Estradiol/sangue , Feminino , Hormônio Foliculoestimulante/sangue , Teste de Tolerância a Glucose , Humanos , Insulina/sangue , Resistência à Insulina , Hormônio Luteinizante/sangue , Síndrome do Ovário Policístico/sangue , Prolactina/sangue , Testosterona/sangue , Resultado do Tratamento
5.
Gynecol Endocrinol ; 28(4): 241-4, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22420627

RESUMO

Polycystic ovary syndrome is one of the most common endocrine disorders in women of reproductive age. Features of PCOS are hyperandrogenism, chronic anovulation and polycystic ovaries on ultrasonography. Follicle development is a complex and carefully orchestrated phenomenon, involving gonadotropins and a rapidly expanding list of other intraovarian regulators, such as brain-derived neurotrophic factor (BDNF). The aim of this study is to evaluate BDNF in plasma and in follicular fluid in women affected by PCOS and in normal menstruating women. In PCOS patients the BDNF levels in plasma and in follicular fluid are higher than values obtained in healthy controls. Therefore we can hypothsize that high levels of luteinizing hormone, probably increase the secretion of BDNF in PCOS patients.


Assuntos
Fator Neurotrófico Derivado do Encéfalo/metabolismo , Líquido Folicular/metabolismo , Síndrome do Ovário Policístico/metabolismo , Adolescente , Adulto , Fator Neurotrófico Derivado do Encéfalo/sangue , Estradiol/sangue , Feminino , Hormônio Foliculoestimulante/sangue , Humanos , Hormônio Luteinizante/sangue , Síndrome do Ovário Policístico/sangue , Progesterona/sangue , Adulto Jovem
6.
Eur Rev Med Pharmacol Sci ; 25(14): 4799-4809, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34337729

RESUMO

Polycystic ovary syndrome (PCOS) is an endo-crine disorder that occurs in 8-10% of women of reproduc-tive age. It is characterized by oligo or anovulation, hyperandrogenism and/or polycystic ovaries, but also by an increased insulin plasma level especially in overweight/obese women or in those with familial diabetes. In the last years, among the insulin sensitizers, the use of the two active isoforms of inositols (myo-inositol and d-chiro-inositol) has been spreading for the treatment of PCOS insulin resistance. Several studies have shown a positive role of inositols both on the metabolic profile of PCOS patients, but also on hormonal parameters. Hence, inositols can positively affect the infertility that characterizes many PCOS patients, acting both on ovarian function and spontaneous ovulation and during IVF procedures, in terms of oocyte quality and pregnancy rate.


Assuntos
Inositol/farmacologia , Síndrome do Ovário Policístico/tratamento farmacológico , Proteínas Proto-Oncogênicas c-akt/metabolismo , Feminino , Humanos , Resistência à Insulina , Síndrome do Ovário Policístico/metabolismo
7.
J Biol Regul Homeost Agents ; 24(1): 63-72, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20385072

RESUMO

Reproductive dysfunction with ageing has been so far extensively characterized in terms of depletion of ovarian follicles and reduced ability to produce gametes competent for fertilization. Nevertheless, molecular mechanisms underlying this process are still poorly understood. In the present study we addressed the hypothesis that methylglyoxal (MG), a major precursor of Advanced Glycation Endproducts (AGE), may contribute to molecular damage occurring during ovarian ageing. Our results showed that the biochemical activity of glyoxalase 1, the main component of the MG scavenging system, is significantly decreased in ovaries from reproductively-aged mice in comparison with the young group. This effect was associated with decreased expression at protein and RNA level of this enzyme and increased intraovarian level of MG. MG-arginine adducts argpyrimidine as detected with a specific antibody was found to accumulate with ageing in specific ovarian compartments. Separation of ovarian proteins by 2D gels and Western blotting revealed an approximate 30-fold increase in the extent of protein glycation in aged ovaries along with the appearance of eight argpyrimidine modified proteins exclusive for the aged group. In conclusion, the present results show that impaired MG detoxification causing relevant damage to the ovarian proteome might be one of the mechanisms underlying reproductive ageing and/or ageing-like ovarian diseases.


Assuntos
Envelhecimento/fisiologia , Produtos Finais de Glicação Avançada/biossíntese , Ovário/fisiopatologia , Aldeído Pirúvico/metabolismo , Reprodução/fisiologia , Envelhecimento/genética , Envelhecimento/metabolismo , Animais , Sequência de Bases , Primers do DNA/genética , Feminino , Lactoilglutationa Liase/genética , Lactoilglutationa Liase/metabolismo , Camundongos , Modelos Biológicos , Ovário/metabolismo , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Reprodução/genética
8.
Minerva Ginecol ; 62(1): 33-48, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20186113

RESUMO

The polycystic ovarian syndrome (PCOS) includes a wide spectrum of clinical symptoms and signs. Three different diagnostic classifications have been proposed to define this disease. The first one, published in 1990, known as the "NIH criteria" requires the simultaneous presence of hyperandrogenism and menstrual dysfunction in order to diagnose PCOS. Later on, in 2003, an expert panel met in Rotterdam and added to the previous criteria the presence of polycystic ovarian morphology detected by transvaginal ultrasonography. The later classification broadened the spectrum of PCOS and also included women with oligomenorrhea and PCO without hyperandrogenism or hyperandrogenism and PCO without menstrual dysfunction. Finally, the Androgen Excess Society, published in 2006 new diagnostic criteria which required the presence of clinical or biochemical hyperandrogenism, with either PCO or menstrual dysfunction to diagnose PCOS. This review focuses on the diagnostic techniques and methods of treatment for PCOS patients. Special attention is given to the role of insulin resistance and the potential utility of insulin sensitizers in management of the syndrome. The benefit and utmost importance of lifestyle modification for the long-term health of these women is stressed as well. It is hoped that some clarity in this regard will allow more women to not only be diagnosed and managed properly for their presenting symptoms (hirsutism, irregular menses, etc.), but also to be educated and managed for the continuing health risk of insulin resistance throughout their lives.


Assuntos
Síndrome do Ovário Policístico/diagnóstico , Síndrome do Ovário Policístico/tratamento farmacológico , Androgênios/metabolismo , Inibidores da Aromatase/uso terapêutico , Clomifeno/uso terapêutico , Anticoncepcionais Orais Hormonais/uso terapêutico , Diagnóstico Diferencial , Feminino , Hormônio Foliculoestimulante/uso terapêutico , Hormônio Liberador de Gonadotropina/agonistas , Gonadotropinas Hipofisárias/metabolismo , Hirsutismo/etiologia , Hirsutismo/terapia , Humanos , Hiperandrogenismo/etiologia , Infertilidade Feminina/tratamento farmacológico , Infertilidade Feminina/etiologia , Resistência à Insulina , Distúrbios Menstruais/tratamento farmacológico , Distúrbios Menstruais/etiologia , Metformina/uso terapêutico , Obesidade/complicações , Folículo Ovariano/diagnóstico por imagem , Ovário/diagnóstico por imagem , Ovário/cirurgia , PPAR gama/antagonistas & inibidores , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/fisiopatologia , Síndrome do Ovário Policístico/cirurgia , Técnicas de Reprodução Assistida , Espironolactona/uso terapêutico , Ultrassonografia
9.
Int J Endocrinol ; 2019: 8309405, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31097963

RESUMO

[This corrects the article DOI: 10.1155/2017/5469409.].

10.
Int J Endocrinol ; 2017: 5469409, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28348586

RESUMO

Recently, studies on inositol supplementation during in vitro fertilization program (IVF) have gained particular importance due to the effect of this molecule on reducing insulin resistance improving ovarian function, oocyte quality, and embryo and pregnancy rates and reducing gonadotropin amount during stimulation. Inositol and its isoforms, especially myoinositol (MYO), are often used as prestimulation therapy in infertile patients undergoing IVF cycle. Inositol supplementation started three months before ovarian stimulation, resulting in significant improvements in hormonal responses, reducing the amount of FSH necessary for optimal follicle development and serum levels of 17beta-estradiol measured the day of hCG injection. As shown by growing number of trials, MYO supplementation improves oocyte quality by reducing the number of degenerated and immature oocytes, in this way increasing the quality of embryos produced. Inositol can also improve the quality of sperm parameters in those patients affected by oligoasthenoteratozoospermia.

11.
J Clin Endocrinol Metab ; 77(1): 61-7, 1993 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-8325961

RESUMO

GH therapy increases the ovarian response to gonadotropin stimulation in women presenting with ovaries that are relatively resistant to conventional gonadotropin therapy. As it is not completely certain whether GH modulates the actions of FSH on granulosa cells directly or via insulin-like growth factor-I (IGF-I) production, we studied its effect on steroid release by human granulosa cells obtained from subjects affected by unexplained or male factor infertility. In all subjects, superovulation for in vitro fertilization/embryo transfer was induced by treatment with gonadotropins or GH plus gonadotropins combined. The effects of the different in vivo treatments were evaluated in the conditioned medium obtained after the first 24 h of incubation; granulosa cells from patients treated with GH released higher amounts of estradiol and progesterone into the medium than did granulosa cells from patients treated with gonadotropins alone. When the release of steroid due to the in vivo treatment was exhausted, cells were subjected to increasing concentrations of GH in the presence or absence of 200 nmol anti-IGF Sm 1.2 monoclonal antibody (MoAb) or the antitype I receptor alpha IR3 MoAb. The results revealed that GH stimulates estradiol production in a dose-dependent fashion, and the presence of the MoAbs drastically reduces the GH effect. These data demonstrate that the established stimulatory effect of GH on ovarian function is dependent not only on the increased levels of circulating IGF-I, but also on a direct effect of GH on granulosa cells, which seems to be mediated at least in part by the autocrine action of IGF, particularly IGF-II. In fact, chromatographic analysis of medium conditioned by human granulosa cells revealed that these cells clearly produce IGF-II and IGF-binding proteins and only small amounts of IGF-I. Since GH appears to be able to increase the in vitro effect of both IGF-I and IGF-II, we can hypothesize a sensitization of the granulosa cells to the IGF-II produced by the cells themselves, which acts through the IGF-I receptor.


Assuntos
Estradiol/metabolismo , Células da Granulosa/metabolismo , Hormônio do Crescimento/farmacologia , Adulto , Anticorpos Monoclonais , Células Cultivadas , Transferência Embrionária , Feminino , Fertilização in vitro , Células da Granulosa/efeitos dos fármacos , Hormônio do Crescimento/uso terapêutico , Humanos , Infertilidade Feminina , Fator de Crescimento Insulin-Like I/imunologia , Fator de Crescimento Insulin-Like I/fisiologia , Fator de Crescimento Insulin-Like II/imunologia , Fator de Crescimento Insulin-Like II/fisiologia , Indução da Ovulação , Progesterona/metabolismo
12.
Eur J Endocrinol ; 133(3): 375-80, 1995 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-7581957

RESUMO

The present study investigated the effect of allopregnanolone (5 alpha-pregnan-3 alpha-ol-20-one) or of passive immunoneutralization of brain allopregnanolone, the most potent steroid produced by neurons, on ovulation rate and sexual behavior in female rats. Allopregnanolone was injected intracerebroventricularly in rats on diestrus and proestrus and tests were done on estrus. The intracerebroventricular injection of allopregnanolone significantly decreased the number of oocytes collected on estrus (p < 0.01). To support a physiological involvement, antiserum to allopregnanolone was injected centrally to block the activity of the endogenous neurosteroid. When administered on diestrus and proestrus or only on proestrus, the antiserum was shown to be correlated with a significant increase (p < 0.01) in oocytes retrieved on estrus. In female rats treated with antiserum to allopregnanolone, the lordosis intensity was augmented significantly as compared to controls. Finally, the possible changes of medial basal hypothalamus concentration of allopregnanolone throughout the estrous cycle and at the time of ovulation were investigated. Hypothalamic extracts were eluted on high-pressure liquid chromatography and allopregnanolone concentration was measured by radioimmunoassay. Brain cortex was used as control tissue. Hypothalamic allopregnanolone concentration on proestrus morning and afternoon was found to be significantly lower than in the remaining phases of the estrous cycle (p < 0.01), while no significant changes were observed in brain cortex concentration of allopregnanolone. The present results suggest that hypothalamic allopregnanolone may be involved in the mechanism of ovulation, affecting hormonal and behavioral events.


Assuntos
Pregnanolona/fisiologia , Reprodução/fisiologia , Animais , Encéfalo/metabolismo , Diestro , Estro , Feminino , Hipotálamo/metabolismo , Imunização Passiva , Injeções Intraventriculares , Oócitos/efeitos dos fármacos , Ovulação/efeitos dos fármacos , Postura , Pregnanolona/imunologia , Pregnanolona/farmacologia , Proestro , Ratos , Comportamento Sexual Animal/efeitos dos fármacos
13.
Fertil Steril ; 65(2): 317-22, 1996 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-8566255

RESUMO

OBJECTIVE: To assess tubal patency by color Doppler hysterosalpingography (HSG). DESIGN: Comparative study of color Doppler HSG with roentgenogram HSG and chromolaparoscopy in infertile women of childbearing age. SETTING: Clinical environment. PATIENTS: Sixty female patients (22 to 39 years) with long-lasting infertility problems. INTERVENTION: Sterile saline was transcervically injected into the uterine cavity through a catheter and color Doppler HSG was performed. All the patients were submitted to roentgenogram HSG and chromolaparoscopy. MAIN OUTCOME MEASURES: The diagnostic efficacy of color Doppler HSG and its concordance with "gold standard" chromolaparoscopy were analyzed. RESULTS: Correlation between color Doppler HSG and roentgenogram HSG with chromolaparoscopy occurred in 86% versus 93% of all women studied. CONCLUSIONS: Color Doppler HSG with its accuracy and safety results a promising alternative technique to roentgenogram HSG in diagnosing tubal status in infertile patients.


Assuntos
Tubas Uterinas/diagnóstico por imagem , Histerossalpingografia , Ultrassonografia Doppler em Cores , Adulto , Testes de Obstrução das Tubas Uterinas , Feminino , Humanos
14.
Fertil Steril ; 70(3): 560-4, 1998 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-9757891

RESUMO

OBJECTIVE: To evaluate plasma and follicular fluid levels of vascular endothelial growth factor (VEGF) in women undergoing controlled ovarian hyperstimulation to establish the possible role of this growth factor as a predictive marker of ovarian hyperstimulation syndrome (OHSS). DESIGN: Prospective observational study. SETTING: University hospital infertility unit. PATIENT(S): Fifteen women at risk of OHSS and 15 controls. INTERVENTION(S): An IM injection of hCG was administered; plasma and follicular fluid samples were collected 34-38 hours after administration of hCG. MAIN OUTCOME MEASURE(S): VEGF levels in plasma and in follicular fluid. RESULT(S): VEGF levels increased after hCG administration in the patients at risk of developing OHSS and in those who developed OHSS. Further, on the day of the oocyte retrieval the increase in the VEGF levels in the plasma of the patients who developed OHSS was statistically significant compared with the increase in the levels in the women who did not. On the same day, the levels of VEGF in follicular fluid were 10 times greater than those in plasma. CONCLUSION(S): Plasma levels of VEGF peak after hCG administration and are related to the risk of developing OHSS.


Assuntos
Fatores de Crescimento Endotelial/metabolismo , Fertilização in vitro , Líquido Folicular/metabolismo , Linfocinas/metabolismo , Síndrome de Hiperestimulação Ovariana/metabolismo , Adulto , Estudos de Casos e Controles , Gonadotropina Coriônica/uso terapêutico , Fatores de Crescimento Endotelial/sangue , Feminino , Humanos , Linfocinas/sangue , Valor Preditivo dos Testes , Estudos Prospectivos , Fatores de Risco , Fator A de Crescimento do Endotélio Vascular , Fatores de Crescimento do Endotélio Vascular
15.
Fertil Steril ; 75(6): 1218-21, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11384653

RESUMO

OBJECTIVE: To determine the levels of the angiogenic factors vascular endothelial growth factor (VEGF) and interleukin (IL-8) in ovarian cysts. DESIGN: Prospective descriptive study. SETTING: University hospital. PATIENT(S): One hundred women, of whom 9 had ovarian carcinomas, 38 had ovarian endometriomata, 43 had serous ovarian cysts, and 10 had follicular ovarian cysts. INTERVENTION(S): Sampling of serum and ovarian cystic fluid before and during surgery. MAIN OUTCOME MEASURE: Levels of VEGF and IL-8 in cystic fluid and serum. RESULT(S): Levels of both VEGF and IL-8 were found to be significantly higher in the cystic fluid of ovarian carcinomas and endometriomata than in serous and follicular cysts. In endometriomata fluid, levels of VEGF and IL-8 were found to be directly correlated (r = 0.68; P=.0074). Serum levels of VEGF were significantly higher in women with ovarian carcinomas and endometriomata than in those with serous and follicular cysts. Ovarian cancers and endometriomata were similar in terms of cystic concentrations of VEGF and IL-8 and in serum levels of VEGF. CONCLUSION(S): An increase in angiogenic factors that differentiate ovarian carcinomas and endometriomata from other kinds of ovarian pathology is demonstrated.


Assuntos
Carcinoma/metabolismo , Endometriose/metabolismo , Fatores de Crescimento Endotelial/metabolismo , Cisto Folicular/metabolismo , Interleucina-8/metabolismo , Linfocinas/metabolismo , Cistos Ovarianos/metabolismo , Doenças Ovarianas/metabolismo , Neoplasias Ovarianas/metabolismo , Fatores de Crescimento Endotelial/sangue , Feminino , Humanos , Interleucina-8/sangue , Linfocinas/sangue , Concentração Osmolar , Estudos Prospectivos , Fator A de Crescimento do Endotélio Vascular , Fatores de Crescimento do Endotélio Vascular
16.
Fertil Steril ; 65(4): 739-45, 1996 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-8654631

RESUMO

OBJECTIVE: To investigate intrafollicular insulin-like growth factor II (IGF-II) in patients affected with polycystic ovary syndrome (PCOS) in comparison with normal women. DESIGN: Insulin-like growth factor-II was determined in 103 follicular fluids (FF) from normally ovulating women and in 102 FF from patients with PCOS. Ribonucleic acid was extracted from granulosa cells of follicles obtained from control and PCOS patients and from tissue from polycystic ovaries. SETTING: Procedures were performed in a university laboratory. PATIENTS: Twenty-nine normally ovulating women and 19 patients with PCOS underwent ovulation induction for IVF-ET with LH-releasing hormone (LH-RH) analog and gonadotropins. Eleven of them, 4 to 8 months later, underwent ovulation induction with approximately the same dosage of gonadotropins plus a standard dosage of GH. MAIN OUTCOME MEASURES: Intrafollicular IGF-II, IGF-I, epidermal growth factor (EGF), transforming growth factor beta 2, (TGF-beta 2), inhibin, and steroids were evaluated by appropriate RIA, immunoenzymatic assay (EIA), and ELISA assays. The expression of the gene encoding IGF-II was analyzed by Northern blot. RESULTS: Intrafollicular IGF-II was lower in PCOS than in controls. Accordingly, IGF-II messenger RNA expression was lower in PCO than in normal granulosa cells. Several differences in FF IGF-I, EGF, inhibin, and TGF-beta 2 concentrations were observed between PCOS and controls. CONCLUSIONS: Both IGF-II and IGF-I were reduced in PCOS, confirming a possible role of an IGF imbalance in the development of this disease.


Assuntos
Líquido Folicular/metabolismo , Fator de Crescimento Insulin-Like II/metabolismo , Ovulação/metabolismo , Síndrome do Ovário Policístico/metabolismo , Adulto , Estudos de Casos e Controles , Fator de Crescimento Epidérmico/metabolismo , Estradiol/metabolismo , Feminino , Células da Granulosa/metabolismo , Humanos , Inibinas/metabolismo , Fator de Crescimento Insulin-Like I/metabolismo , Fator de Crescimento Insulin-Like II/genética , Progesterona/metabolismo , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Fator de Crescimento Transformador beta/metabolismo
17.
J Exp Clin Cancer Res ; 20(2): 239-46, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11484981

RESUMO

Proteolytic enzymes, like urokinase (uPA) and plasminogen activator inhibitor type-1 (PAI-1), are involved in remodelling tissues during invasion and metastasis of tumor cells. The purpose of the study is to evaluate the expression and the prognostic significance of these enzymes in endometrial hyperplasia and cancer. We used immunohistochemical staining to localize uPA and PAI-1 antigens and evaluate their expression, and the enzyme-linked immunosorbent assay (ELISA) to measure their levels during the progression of endometrial carcinoma. The results show that the levels of uPA and PAI-1 detection are systematically weak in simplex hyperplasia and are moderate in complex hyperplasia. In the endometrial carcinoma a very strong reaction was observed in the most aggressive variant of epithelial tumors. A positive signal for uPA was found only in the cytoplasm of normal and hyperplastic cells while, in tumors, uPA was present also in the cellular areas surrounding the neoplastic glands and at the apex of the malignant cells. The PAI-1 immunoreactivity was weak to moderate in 95.4% of carcinomas, with a diffuse signal mostly distributed in the cytoplasm of neoplastic cells and tumor stroma. UPA antigen concentrations were significantly higher in endometrial carcinoma than in endometrial hyperplasia (p<0.05) and in normal endometrium (p<0.001). PAI-1 antigen concentrations in carcinoma samples were significantly higher than in normal endometrium (p=0.002), but the difference was not statistically significant with respect to that in endometrial hyperplasia. We did not find any correlation between uPA and PAI-1 concentrations and the standard prognostic parameters for evaluating endometrial carcinoma. In conclusion, this study demonstrates that in hyperplastic endometria and in endometrial carcinoma there is a progressive increase in expression of uPA and PAI-1 than in normal endometrial tissue. In carcinoma tissues, the high expression of uPA is unregulated in the surrounding stroma tissue, particularly in the most aggressive histopathologic variants. UPA and PAI-1 may be factors associated with invasive behavior in endometrial carcinoma independent of other clinicopathological parameters.


Assuntos
Adenocarcinoma/metabolismo , Hiperplasia Endometrial/metabolismo , Neoplasias do Endométrio/metabolismo , Inibidor 1 de Ativador de Plasminogênio/metabolismo , Inibidores de Serina Proteinase/metabolismo , Ativador de Plasminogênio Tipo Uroquinase/metabolismo , Adenocarcinoma/diagnóstico , Adenocarcinoma/mortalidade , Adulto , Idoso , Progressão da Doença , Hiperplasia Endometrial/diagnóstico , Hiperplasia Endometrial/mortalidade , Neoplasias do Endométrio/diagnóstico , Neoplasias do Endométrio/mortalidade , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Técnicas Imunoenzimáticas , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico
18.
J Exp Clin Cancer Res ; 21(1): 37-43, 2002 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-12071527

RESUMO

The aim of this study was to indicate the patients treated with tamoxifen for breast cancer in which hysteroscopy with biopsy should be considered mandatory. 414 breast cancer patients who underwent hysteroscopy with bioptic evaluation were enrolled in the study. 334 subjects were treated with 20 mg of tamoxifen daily as adjuvant therapy for six up to a hundred months. Of the remaining 80 control patients, which had not received tamoxifen, 30 were in premenopause (Group IA) and 50, in postmenopause (Group IIA). The tamoxifen-treated patients were subdivided in premenopausal (Group IB = 72 patients) and in postmenopausal (Group IIB = 262 patients) groups. All patients were further classified in asymptomatic or symptomatic groups considering whether uterine bleeding was absent or present. The evaluation of the endometrial mucosa was performed by office hysteroscopy. In group IIB patients presenting uterine bleeding, malignant lesions were found in 7.8% of the cases. The incidence of premalignant and malignant lesions in IIB patients treated for longer than 3 years (11.7%) was higher than that observed in IIB patients treated for less than 3 years (1.3%). There was a significant difference in terms of endometrial pathology between Group IIB (32.8%) and Group IIA (8%) (p < 0.001); and between Group IIB (32.8%) and Group IB (13.9%) women (p = 0.003). Among IA and IIA patients there were no cases of endometrial hyperplasia or cancer; on the contrary, in IB and IIB women, 2 and 22 cases of atypical hyperplasia were observed, respectively. All cases of endometrial cancer were observed in Group IIB and had a diagnosis of poor prognosis. In conclusion the hysteroscopy with biopsy should be considered the first diagnostic procedure to perform in tamoxifen-treated postmenopausal patients presenting uterine bleeding and in postmenopausal women treated for longer than 3 years. In premenopause, hysteroscopy should be proposed to women with ultrasonographic abnormalities and/or with uterine bleeding to patients at high risk for endometrial cancer.


Assuntos
Antineoplásicos Hormonais/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Hiperplasia Endometrial/diagnóstico , Neoplasias do Endométrio/diagnóstico , Endométrio/efeitos dos fármacos , Histeroscopia/métodos , Tamoxifeno/uso terapêutico , Antineoplásicos Hormonais/efeitos adversos , Biópsia , Hiperplasia Endometrial/induzido quimicamente , Neoplasias do Endométrio/induzido quimicamente , Endométrio/patologia , Feminino , Seguimentos , Humanos , Incidência , Programas de Rastreamento , Pessoa de Meia-Idade , Pós-Menopausa , Pré-Menopausa , Fatores de Risco , Tamoxifeno/efeitos adversos
19.
Eur J Obstet Gynecol Reprod Biol ; 39(3): 223-5, 1991 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-1903347

RESUMO

A patient with a history of two spontaneous abortions, at the 16th and 20th week, respectively, and one intra-uterine fetal death at the 26th week of gestation was investigated. The sole abnormal condition that could be evidenced was a submucosal leiomyoma of 56 mm in diameter in the uterine fundus. Administration of gonadotropin/releasing hormone analog (GnRHa) for 10 months resulted in complete disappearance of myoma. Direct intraperitoneal insemination following induction of ovulation resulted in pregnancy. In a patient harboring uterine leiomyomas, adversely affecting conception and pregnancy outcome, GnRHa treatment may be an initial approach allowing to avoid pelvic surgery. As the beneficial effect of GnRHa might be temporary, assisted reproduction procedures might anticipate conception.


Assuntos
Busserrelina/uso terapêutico , Leiomioma/tratamento farmacológico , Complicações Neoplásicas na Gravidez , Neoplasias Uterinas/tratamento farmacológico , Aborto Espontâneo/etiologia , Adulto , Feminino , Humanos , Infertilidade Feminina/etiologia , Infertilidade Feminina/terapia , Inseminação Artificial Homóloga , Leiomioma/complicações , Gravidez , Neoplasias Uterinas/complicações
20.
Eur J Obstet Gynecol Reprod Biol ; 101(2): 169-74, 2002 Mar 10.
Artigo em Inglês | MEDLINE | ID: mdl-11858893

RESUMO

BACKGROUND: The pathogenesis of ovarian hyperstimulation syndrome (OHSS) is not completely understood. OBJECTIVE: To investigate the presence of VEGF, IL-6 and IL-2, in serum and follicular fluid, in patients developing severe OHSS. STUDY DESIGN: We enrolled 101 women undergoing in vitro fertilization. Eight patients developing severe OHSS were compared with 43 high risk patients and 50 controls. We analyzed VEGF and IL-6 in serum collected before hCG administration, and in both serum and follicular fluid on the day of oocyte retrieval. RESULTS: OHSS patients presented follicular fluid IL-6 levels higher than both the patients at risk and controls (P<0.05). On the day of the oocyte retrieval the patients developing OHSS showed serum and follicular VEGF values higher than the ones of the patients at risk (P<0.05). Serum and follicular fluid IL-2 levels showed no differences between the examined groups. IL-2, IL-6 and VEGF values were not correlated with each other. CONCLUSIONS: Angiogenesis and inflammation processes are both present in severe OHSS.


Assuntos
Fatores de Crescimento Endotelial/metabolismo , Líquido Folicular/metabolismo , Interleucina-2/metabolismo , Interleucina-6/metabolismo , Linfocinas/metabolismo , Síndrome de Hiperestimulação Ovariana/metabolismo , Adulto , Estudos de Casos e Controles , Gonadotropina Coriônica/uso terapêutico , Fatores de Crescimento Endotelial/sangue , Feminino , Humanos , Interleucina-2/sangue , Interleucina-6/sangue , Linfocinas/sangue , Oócitos , Síndrome de Hiperestimulação Ovariana/sangue , Fator A de Crescimento do Endotélio Vascular , Fatores de Crescimento do Endotélio Vascular
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