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1.
AIDS Care ; 36(5): 641-651, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38091449

RESUMO

Little is known about biopsychosocial factors relating to pre-exposure prophylaxis (PrEP) awareness among people with either heterosexual or injection drug use HIV risk behaviors. Participants engaged in vaginal/anal sex with a person of the opposite sex (N = 515) or were people who injected drugs (PWID; N = 451) in the past 12 months from 2018-2019 in Boston, MA. We examined associations between PrEP awareness and: homelessness; perceived HIV-related stigma; country of birth; bacterial STDs, chlamydia, and/or gonorrhea in the past 12 months, lifetime hepatitis C virus (HCV) infection, sexual orientation, and poverty. More PWID (36.8%) were aware of PrEP than people with heterosexual HIV risk (28%; p = .001). Among people with heterosexual risk, homelessness (aOR = 1.99, p = .003), and among PWID: homelessness (aOR = 2.11, p = .032); bacterial STD (aOR = 2.96, p = .012); chlamydia (aOR = 6.14, p = .008); and HCV (aOR = 2.40, p < .001) were associated with increased likelihood of PrEP awareness. In the combined sample: homelessness (aOR = 2.25, p < .001); HCV (aOR = 2.18, p < .001); identifying as homosexual (aOR = 3.71, p = .036); and bisexual (aOR = 1.55, p = .016) were each associated with PrEP awareness. Although having an STD, HCV, identifying as homosexual or bisexual, and experiencing homelessness were associated with increased PrEP awareness, most participants were unaware of PrEP. Efforts to increase PrEP awareness could engage PWID and heterosexual HIV risk behavior.


Assuntos
Usuários de Drogas , Infecções por HIV , Hepatite C , Profilaxia Pré-Exposição , Abuso de Substâncias por Via Intravenosa , Humanos , Masculino , Feminino , Heterossexualidade , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Infecções por HIV/complicações , Abuso de Substâncias por Via Intravenosa/complicações , Boston/epidemiologia , Hepatite C/epidemiologia , Hepatite C/prevenção & controle , Hepatite C/complicações , Hepacivirus
2.
Acta Neurochir (Wien) ; 164(11): 2899-2908, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35986220

RESUMO

BACKGROUND: Sex-related differences in patients with aneurysmal subarachnoid hemorrhage (aSAH) exist. More females than males are affected. Aneurysm location is associated to sex. The relationship between sex and outcome, however, is unclear. Possible differences in management might influence the occurrence of primary and secondary brain injury and thus outcome. The study compares demographics, intensity of treatment, complications, and outcome among females and males with aSAH. METHODS: All consecutive patients with aSAH admitted to the neurocritical care unit, University Hospital Zurich over a 5-year period were eligible in this retrospective study. Patients' characteristics, comorbidities, aSAH severity, frequency of vasospasm/delayed cerebral ischemia, frequency of invasive interventions, and 3-month outcome were compared by sex. Univariate analysis was performed with the data dichotomized by sex, and outcome. Multivariate analysis for prediction of outcomes was performed. RESULTS: Three hundred forty-eight patients were enrolled (64% females). Women were older than men. Comorbidities, scores at admission, and treatment modality were comparable among males and females. Vasospasm and DCI occurred similarly among females and males. Interventions and frequency of intraarterial spasmolysis were comparable between sexes. In the multivariate analysis, increasing age, female sex, increasing comorbidities, WFNS and Fisher grade, and presence of delayed cerebral ischemia were predictors of unfavorable outcome when considering all patients. However, after excluding death as a possible outcome, sex did not remain a predictor of unfavorable outcome. CONCLUSIONS: In the study population, women with aSAH might have present a worse outcome at 3 months. However, no differences by sex that might explain this difference were found in intensity of treatment and management.


Assuntos
Isquemia Encefálica , Hemorragia Subaracnóidea , Vasoespasmo Intracraniano , Masculino , Humanos , Feminino , Hemorragia Subaracnóidea/epidemiologia , Hemorragia Subaracnóidea/terapia , Hemorragia Subaracnóidea/complicações , Estudos Retrospectivos , Isquemia Encefálica/epidemiologia , Isquemia Encefálica/terapia , Infarto Cerebral , Vasoespasmo Intracraniano/epidemiologia , Vasoespasmo Intracraniano/terapia
4.
J Assist Reprod Genet ; 39(2): 505-516, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35032286

RESUMO

PURPOSE: As a further step to elucidate the actual diverse spectrum of oncofertility practices for breast cancer around the globe, we present and discuss the comparisons of oncofertility practices for breast cancer in limited versus optimum resource settings based on data collected in the Repro-Can-OPEN Study Part I & II. METHODS: We surveyed 39 oncofertility centers including 14 in limited resource settings from Africa, Asia & Latin America (Repro-Can-OPEN Study Part I), and 25 in optimum resource settings from the United States, Europe, Australia and Japan (Repro-Can-OPEN Study Part II). Survey questions covered the availability of fertility preservation and restoration options offered to young female patients with breast cancer as well as the degree of utilization. RESULTS: In the Repro-Can-OPEN Study Part I & II, responses for breast cancer and calculated oncofertility scores showed the following characteristics: (1) higher oncofertility scores in optimum resource settings than in limited resource settings especially for established options, (2) frequent utilization of egg freezing, embryo freezing, ovarian tissue freezing, GnRH analogs, and fractionation of chemo- and radiotherapy, (3) promising utilization of oocyte in vitro maturation (IVM), (4) rare utilization of neoadjuvant cytoprotective pharmacotherapy, artificial ovary, and stem cells reproductive technology as they are still in preclinical or early clinical research settings, (5) recognition that technical and ethical concerns should be considered when offering advanced and innovative oncofertility options. CONCLUSIONS: We presented a plausible oncofertility best practice model to guide oncofertility teams in optimizing care for breast cancer patients in various resource settings.


Assuntos
Neoplasias da Mama , Preservação da Fertilidade , Neoplasias , Neoplasias da Mama/complicações , Embrião de Mamíferos , Feminino , Humanos , Técnicas de Maturação in Vitro de Oócitos , Inquéritos e Questionários
5.
Scand J Rheumatol ; 50(1): 58-67, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32757806

RESUMO

Objective: To investigate the relationship between self-reported osteoarthritis (OA) and reproductive factors in the Women's Health Initiative (WHI). Method: We used multivariable logistic regression to study the association of self-reported OA and reproductive factors in the WHI Observational Study and Clinical Trial cohorts of 145 965 postmenopausal women, in a retrospective cross-sectional format. Results: In our cohort, we observed no clinically significant associations between reproductive factors and OA given small effect sizes. The following factors were associated with statistically significant increased likelihood of developing OA: younger age at menarche (p < 0.001), history of hysterectomy [adjusted odds ratio (aOR) 1.013, 95% confidence interval (CI) 1.004-1.022, p = 0.04 vs no hysterectomy], history of unilateral oophorectomy (aOR 1.015, 95% CI 1.004-1.026, p < 0.01 vs no oophorectomy), parity (aOR 1.017, 95% CI 1.009-1.026, p < 0.001), ever use of oral contraceptives (aOR 1.008, 95% CI 1.001-1.016, p < 0.01 vs never use), and current use of hormonal therapy (reference current users, aOR 0.951, 95% CI 0.943-0.959 for never users; aOR 0.981, 95% CI 0.972-0.989 for past users; global p < 0.001). Age at menopause, first birth, and pregnancy were not associated with OA. Among parous women, no clear pattern was observed with number of pregnancies, births, or duration of breastfeeding in relation to OA. Conclusion: Our study showed that reproductive factors did not have significant clinical associations with OA after controlling for confounders. This may be due to complex hormonal effects. Additional investigation is warranted in prospective cohort studies. The Women's Health Initiative is registered under ClinicalTrials.gov. Trial registration ID: NCT00000611.


Assuntos
Osteoartrite/epidemiologia , História Reprodutiva , Adulto , Estudos Transversais , Estrogênios/administração & dosagem , Feminino , Humanos , Pessoa de Meia-Idade , Gravidez , Estudos Retrospectivos , Estados Unidos/epidemiologia , Saúde da Mulher , Adulto Jovem
6.
Pathologe ; 41(Suppl 2): 124-128, 2020 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-33113046

RESUMO

Besides histopathological findings, there are no indicators of increased risk for fibrotic progression in myeloproliferative neoplasms (MPNs). Age-related clonal hematopoiesis (ARCH) or clonal hematopoiesis of indetermined potential (CHIP) are frequent findings in the elderly and combinations with MPN driver mutations (JAK2, MPL, and CALR) have been described. To determine the impact of ARCH/CHIP-related mutations for the development of fibrosis in primary myelofibrosis (PMF), the mutational status of cases with fibrotic progression from grade 0 to grade 2/3 (n = 77) as evidenced by follow-up bone marrow biopsies (median 6.2 years) was compared to prefibrotic PMF samples without the development of fibrosis (n = 27; median follow-up 7.3 years). Frequent ARCH/CHIP-associated mutations (TET2, ASXL1, DNMT3A) demonstrable at presentation were not connected with fibrotic progression. However, mutations that are rarely found in ARCH/CHIP (SRSF2, U2AF1, SF3B1, IDH1/2, and EZH2) were present in 24.7% of cases with later development of fibrosis and not detectable in cases staying free from fibrosis (P = 0.0028). Determination of tumor mutational burden (TMB) in a subgroup of cases (n = 32) did not show significant differences (7.68 mutations/MB vs. 6.85 mutations/MB). We conclude that mutations rarely found in ARCH/CHIP provide an independent risk factor for rapid fibrotic progression (median 2.0 years) when already manifest at first presentation.


Assuntos
Mielofibrose Primária , Idoso , Fibrose , Transplante de Células-Tronco Hematopoéticas , Humanos , Janus Quinase 2/genética , Mutação , Mielofibrose Primária/genética
7.
Reprod Biol Endocrinol ; 16(1): 70, 2018 Jul 23.
Artigo em Inglês | MEDLINE | ID: mdl-30037349

RESUMO

BACKGROUND: What are the underlying socio-demographic factors that lead healthy women to preserve their fertility through elective egg freezing (EEF)? Many recent reviews suggest that women are intentionally postponing fertility through EEF to pursue careers and achieve reproductive autonomy. However, emerging empirical evidence suggests that women may be resorting to EEF for other reasons, primarily the lack of a partner with whom to pursue childbearing. The aim of this study is thus to understand what socio-demographic factors may underlie women's use of EEF. METHODS: A binational qualitative study was conducted from June 2014 to August 2016 to assess the socio-demographic characteristics and life circumstances of 150 healthy women who had undertaken at least one cycle of elective egg freezing (EEF) in the United States and Israel, two countries where EEF has been offered in IVF clinics over the past 7-8 years. One hundred fourteen American women who completed EEF were recruited from 4 IVF clinics in the US (2 academic, 2 private) and 36 women from 3 IVF clinics in Israel (1 academic, 2 private). In-depth, audio-recorded interviews lasting from 0.5 to 2 h were undertaken and later transcribed verbatim for qualitative data analysis. RESULTS: Women in both countries were educated professionals (100%), and 85% undertook EEF because they lacked a partner. This "lack of a partner" problem was reflected in women's own assessments of why they were single in their late 30s, despite their desires for marriage and childbearing. Women themselves assessed partnership problems from four perspectives: 1) women's higher expectations; 2) men's lower commitments; 3) skewed gender demography; and 4) self-blame. DISCUSSION: The "lack of a partner" problem reflects growing, but little discussed international socio-demographic disparities in educational achievement. University-educated women now significantly outnumber university-educated men in the US, Israel, and nearly 75 other societies around the globe, according to World Bank data. Thus, educated women increasingly face a deficit of educated men with whom to pursue childbearing. CONCLUSION: Among healthy women, EEF is a technological concession to gender-based socio-demographic disparities, which leave many highly educated women without partners during their prime childbearing years. This information is important for reproductive specialists who counsel single EEF patients, and for future research on EEF in diverse national settings.


Assuntos
Preservação da Fertilidade/psicologia , Mulheres/psicologia , Escolaridade , Feminino , Humanos , Israel , Fatores Socioeconômicos , Estados Unidos
8.
Neuropeptides ; 46(5): 211-5, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22884888

RESUMO

The neuropeptide oxytocin has become a subject of great interest in studies investigating human social cognition. Single intranasal administration of the hormone has been reported to have positive behavioral effects, such as increasing trust or facilitating social approach, 45-80 min after administration. However, little is still known about the long-term pharmacokinetics of oxytocin nasal spray application in humans. This study addressed the question how long oxytocin plasma levels remain elevated following nasal spray administration. Another goal was to examine the influence of oxytocin administration on endogenous steroid hormones since such alterations might modulate social behavior via an indirect way. Eight healthy Caucasian men were challenged with a single intranasal application of 26 international units of oxytocin. Changes in oxytocin blood plasma levels, as well as steroid hormone levels of progesterone, testosterone and estradiol were assessed at 5 consecutive time points over a period of 3.5 h (-5, +30, +90, +150, +210 min relative to oxytocin administration). Results gave evidence for a substantial rise of oxytocin plasma levels 30 min after intranasal administration, observed in 7 of 8 participants. Group mean oxytocin plasma level was found to have returned to baseline already 90 min post administration, though in some individuals the plasma levels was still elevated relative to sampling at post 150 min. Steroid hormone analyses yielded a slight augmentation of endogenous testosterone levels 210 min after oxytocin administration. Our data confirms previous findings that oxytocin administered as a nasal spray enters the blood circulation, elevating oxytocin plasma levels for a limited time. Our findings suggest that this time window differs between individuals, but that, for the used dose, it does not extend beyond 150 min post administration. The data further provides preliminary evidence that intranasal oxytocin has an enhancing effect on testosterone in healthy men.


Assuntos
Ocitocina/administração & dosagem , Ocitocina/sangue , Administração Intranasal , Adulto , Estradiol/sangue , Humanos , Masculino , Ocitocina/farmacocinética , Progesterona/sangue , Testosterona/sangue
9.
Mol Hum Reprod ; 18(9): 442-50, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22505054

RESUMO

Recurrent pregnancy loss (RPL) occurs in ∼5% of women. However, the etiology is still poorly understood. Defects in decidualization of the endometrium during early pregnancy contribute to several pregnancy complications, such as pre-eclampsia and intrauterine growth restriction (IUGR), and are believed to be important in the pathogenesis of idiopathic RPL. We performed microarray analysis to identify gene expression alterations in the deciduas of idiopathic RPL patients. Control patients had one antecedent term delivery, but were undergoing dilation and curettage for current aneuploid miscarriage. Gene expression differences were evaluated using both pathway and gene ontology (GO) analysis. Selected genes were validated using quantitative reverse transcription-polymerase chain reaction (qRT-PCR). A total of 155 genes were found to be significantly dysregulated in the deciduas of RPL patients (>2-fold change, P < 0.05), with 22 genes up-regulated and 133 genes down-regulated. GO analysis linked a large percentage of genes to discrete biological functions, including immune response (23%), cell signaling (18%) and cell invasion (17.1%), and pathway analysis revealed consistent changes in both the interleukin 1 (IL-1) and IL-8 pathways. All genes in the IL-8 pathway were up-regulated while genes in the IL-1 pathway were down-regulated. Although both pathways can promote inflammation, IL-1 pathway activity is important for normal implantation. Additionally, genes known to be critical for degradation of the extracellular matrix, including matrix metalloproteinase 26 and serine peptidase inhibitor Kazal-type 1, were also highly up-regulated. In this first microarray approach to decidual gene expression in RPL patients, our data suggest that dysregulation of genes associated with cell invasion and immunity may contribute significantly to idiopathic recurrent miscarriage.


Assuntos
Aborto Habitual/genética , Aborto Habitual/imunologia , Decídua/metabolismo , Implantação do Embrião/genética , Regulação da Expressão Gênica no Desenvolvimento , Adulto , Movimento Celular/genética , Decídua/citologia , Regulação para Baixo , Endométrio/imunologia , Endométrio/metabolismo , Feminino , Retardo do Crescimento Fetal , Perfilação da Expressão Gênica , Humanos , Inflamação/genética , Inflamação/imunologia , Interleucina-1/genética , Interleucina-8/genética , Metaloproteinases da Matriz/biossíntese , Pessoa de Meia-Idade , Análise de Sequência com Séries de Oligonucleotídeos , Pré-Eclâmpsia , Gravidez , Complicações na Gravidez/genética , Proteínas Secretadas Inibidoras de Proteinases/biossíntese , Regulação para Cima
10.
Clin Exp Obstet Gynecol ; 35(3): 170-1, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18754284

RESUMO

PURPOSE: To report the case of a patient undergoing in vitro fertilization (IVF) in which a non-pronuclear (0PN) oocyte resulted in a normal pregnancy. METHODS: A 36-year-old woman underwent an IVF-embryo transfer treatment cycle. RESULTS: Four oocytes were retrieved for insemination by IVF. Examination for fertilization revealed two polypronuclearpolygynic and two non-pronuclear oocytes. The non-pronuclear oocytes were observed further for development. One embryo developed from the non-pronuclear cohort and was transferred at the 8-cell stage on day 3. Subsequently, a pregnancy developed, and resulted in the delivery of a healthy term infant. CONCLUSIONS: Non-pronuclear oocytes may represent a source of developmentally competent embryos, and further observation of this cohort should be considered, particularly in situations involving a low yield of oocytes at retrieval.


Assuntos
Fertilização in vitro , Oócitos/citologia , Adulto , Transferência Embrionária , Feminino , Humanos , Recém-Nascido , Oócitos/fisiologia , Indução da Ovulação , Gravidez , Nascimento a Termo
11.
Clin Exp Obstet Gynecol ; 33(3): 145-7, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-17089576

RESUMO

PURPOSE: To evaluate the effect of oral contraceptive pill (OCP) pretreatment in patients undergoing IVF cycles with an antagonist. METHODS: In this retrospective study, 194 cycles of women with diminished ovarian reserve undergoing IVF with a protocol using GnRH antagonists were evaluated. Oral contraceptive pretreatment was used in 146 cycles. RESULTS: Pregnancy rates were the same in both groups. Patients using OCPs required more gonadotropins (5,890 IU) compared to patients not undergoing OCP pretreatment (4,410 IU). CONCLUSIONS: Pregnancy outcomes were the same whether or not OCP pretreatment was implemented in poor responders using an antagonist protocol. While OCP pretreatment may help with scheduling flexibility, the higher dose of gonadotropins needed for ovarian stimulation should be considered.


Assuntos
Anticoncepcionais Orais/uso terapêutico , Fertilização in vitro , Hormônio Liberador de Gonadotropina/análogos & derivados , Antagonistas de Hormônios/uso terapêutico , Indução da Ovulação/métodos , Adulto , California , Anticoncepcionais Orais/administração & dosagem , Esquema de Medicação , Feminino , Humanos , Gravidez , Resultado da Gravidez , Estudos Retrospectivos , Resultado do Tratamento
12.
Clin Exp Obstet Gynecol ; 33(4): 205-8, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-17211965

RESUMO

PURPOSE: To determine the impact of nutritional supplementation on female fertility. METHODS: A double blind, placebo-controlled study of the effects of FertilityBlend for Women, a proprietary nutritional supplement containing chasteberry, green tea, L-arginine, vitamins (including folate) and minerals, on progesterone level, basal body temperature, menstrual cycle length, pregnancy rate and side-effects. RESULTS: Ninety-three (93) women, aged 24-42 years, who had tried unsuccessfully to conceive for six to 36 months, completed the study. After three months, the FertilityBlend (FB) group (N = 53) demonstrated a trend toward increased mean mid-luteal progesterone (P(ml)), but among women with basal pretreatment P(ml) < 9 ng/ml, the increase in progesterone was highly significant. The average number of days with luteal-phase basal temperatures over 98 degrees F increased significantly in the FB group. Both short and long cycles (< 27 days or > 32 days pretreatment) were normalized in the FB group. The placebo group (N = 40) did not show any significant changes in these parameters. After three months, 14 of the 53 women in the FB group were pregnant (26%) compared to four of the 40 women in the placebo group (10%; p = 0.01). Three additional women conceived after six months on FB (32%). No significant side-effects were noted. CONCLUSION: Nutritional supplements could provide an alternative or adjunct to conventional fertility therapies.


Assuntos
Suplementos Nutricionais , Infertilidade Feminina/terapia , Adulto , Arginina/administração & dosagem , Temperatura Corporal/efeitos dos fármacos , Camellia sinensis , Método Duplo-Cego , Feminino , Humanos , Fase Luteal/efeitos dos fármacos , Minerais/administração & dosagem , Fitoterapia , Progesterona/sangue , Vitaminas/administração & dosagem , Vitex
13.
Reprod Biomed Online ; 7(3): 319-26, 2003 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-14653893

RESUMO

This study evaluated the first multiple-use pen device for the self-administration of recombinant FSH. The pen device is used for the subcutaneous injection of a pre-mixed ready-to-use solution of follitropin beta from a multiple-dose cartridge, and has flexible dosing capabilities. In the ease-of-use questionnaire, 90% of subjects rated the overall experience of self-injecting follitropin beta using the pen device as 'very good' (on day 6). The comprehension questionnaire revealed that prior to the first injection and during the second injection, the follitropin beta cartridge was properly loaded into the pen device by 96.7 and 100% of the subjects respectively. The questionnaire also showed that the correct dose was selected and self-administered by 98.3 and 100% of the subjects respectively. Biochemical and ongoing pregnancy rates per attempt were 56.7 and 45.0% respectively. The pen device is safe, effective, and easy to use for self-administering recombinant FSH during ovarian stimulation.


Assuntos
Fertilização in vitro , Subunidade beta do Hormônio Folículoestimulante/administração & dosagem , Hormônio Liberador de Gonadotropina/análogos & derivados , Injeções Subcutâneas/instrumentação , Indução da Ovulação , Adolescente , Adulto , Quimioterapia Combinada , Transferência Embrionária , Estudos de Avaliação como Assunto , Feminino , Subunidade beta do Hormônio Folículoestimulante/efeitos adversos , Hormônio Liberador de Gonadotropina/administração & dosagem , Antagonistas de Hormônios/administração & dosagem , Humanos , Injeções Subcutâneas/métodos , Gravidez , Resultado da Gravidez , Autoadministração/instrumentação , Autoadministração/métodos , Inquéritos e Questionários
15.
Artigo em Inglês | MEDLINE | ID: mdl-11279561

RESUMO

This paper examines prenatal drinking among American Indian/Alaska Native women using the 1988 Urban Indian Over-sample for the National Maternal and Infant Health Survey. Using univariate, bivariate, and multivariate analyses, alcohol consumption during pregnancy was examined by demographic and behavioral variables. Although one out of every five American Indian/Alaska Native women consumed some amount of alcohol during pregnancy, those who used alcohol drank less than one drink per month.


Assuntos
Consumo de Bebidas Alcoólicas/etnologia , Indígenas Norte-Americanos/psicologia , Inuíte/psicologia , Complicações na Gravidez/etnologia , Adulto , Alaska/epidemiologia , Consumo de Bebidas Alcoólicas/psicologia , Análise de Variância , Feminino , Comportamentos Relacionados com a Saúde/etnologia , Inquéritos Epidemiológicos , Humanos , Bem-Estar Materno , Gravidez , Prevalência , População Urbana/estatística & dados numéricos
16.
IEEE Trans Neural Netw ; 9(6): 1529-31; author reply 1531-2, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-18255831

RESUMO

The above paper claims that under a set of minor restrictions radial basis function networks and fuzzy inference systems are functionally equivalent. The purpose of this letter is to show that this set of restrictions is incomplete and that, when it is completed, the said functional equivalence applies only to a small range of fuzzy inference systems. In addition, a modified set of restrictions is proposed which is applicable for a much wider range of fuzzy inference systems.

17.
Cell ; 89(5): 737-45, 1997 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-9182761

RESUMO

A strong promoter of the transition to flowering in Arabidopsis is encoded by FCA. FCA has been cloned and shown to encode a protein containing two RNA-binding domains and a WW protein interaction domain. This suggests that FCA functions in the posttranscriptional regulation of transcripts involved in the flowering process. The FCA transcript is alternatively spliced with only one form encoding the entire FCA protein. Plants carrying the FCA gene fused to the strong constitutive 35S promoter flowered earlier, and the ratio and abundance of the different FCA transcripts were altered. Thus, FCA appears to be a component of a posttranscriptional cascade involved in the control of flowering time.


Assuntos
Proteínas de Arabidopsis , Arabidopsis/genética , Genes de Plantas , Proteínas de Plantas/genética , Proteínas de Ligação a RNA/genética , Sequência de Aminoácidos , Mapeamento Cromossômico , Clonagem Molecular , Dados de Sequência Molecular , Alinhamento de Sequência
18.
Am J Obstet Gynecol ; 173(3 Pt 1): 962-4, 1995 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-7573281

RESUMO

Pelvic examination of a 19-year-old woman with recurrent pain after multiple laparotomies revealed a 4.0 cm paracervical fibroepithelial polyp and tender fullness in the left pelvis. Abdominal exploration had normal findings, but exploration of the retroperitoneum revealed an encysted bottle cap that had eroded through the vaginal wall years before.


Assuntos
Corpos Estranhos , Corpos Estranhos/diagnóstico , Vagina , Adulto , Biópsia , Diagnóstico Diferencial , Feminino , Corpos Estranhos/cirurgia , Humanos , Laparotomia , Dor Pélvica , Espaço Retroperitoneal , Vagina/patologia
19.
JAMA ; 273(22): 1759-62, 1995 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-7769769

RESUMO

OBJECTIVE: To study the epidemiology of home invasion crimes and determine the frequency with which firearms are used to resist these crimes. DESIGN: Prospective case series. SETTING: Atlanta, Ga (population 402,877). METHODS: Between June 1 and August 31, 1994; Atlanta Police Department reports were screened to identify every case of unwanted entry into an occupied, single-family dwelling. Cases of sexual assault and incidents that involved cohabitants were excluded. RESULTS: A total of 198 cases were identified during the study interval. Half (99 cases) involved forced entry into the home. The victim and offender were acquainted in one third of cases. A firearm was carried by one or more offenders in 32 cases (17%). Seven offenders (3.5%) carried knives. In 42% of cases, the offender fled without confronting the victim. Victims who avoided confrontation were more likely to lose property but much less likely to be injured than those who were confronted by the offender. Resistance was attempted in 62 cases (31%), but the odds of injury were not significantly affected by the method of resistance. Forty cases (20%) resulted in one or more victims' being injured, including six (3%) who were shot. No one died. Three victims (1.5%) employed a firearm in self-protection. All three escaped injury, but one lost property. CONCLUSION: A minority of home invasion crimes result in injury. Measures that increase the difficulty of forced entry or enhance the likelihood of detection could be useful to prevent these crimes. Although firearms are often kept in the home for protection, they are rarely used for this purpose.


Assuntos
Crime/estatística & dados numéricos , Armas de Fogo/estatística & dados numéricos , Habitação , Feminino , Georgia/epidemiologia , Humanos , Masculino , Estudos Prospectivos , Roubo/estatística & dados numéricos , Ferimentos por Arma de Fogo/epidemiologia , Ferimentos Perfurantes/epidemiologia
20.
Am J Reprod Immunol ; 30(2-3): 82-7, 1993.
Artigo em Inglês | MEDLINE | ID: mdl-8311934

RESUMO

PROBLEM: Transforming growth factor-alpha (TGF-alpha) has been shown to be a potent stimulant of oocyte maturation and embryonic development. The role of maternal growth factors and their mechanism of action in early mammalian development is not well understood. METHOD: In this study, the presence of TGF-alpha and epidermal growth factor receptor (EGF-R) in human cumulus cells and fallopian tubes was investigated by immunocytochemical techniques. RESULTS: The fallopian tube showed intense staining for TGF-alpha in the apical region of the epithelial cells, and the cumulus cells showed intense staining for EGF-R on cell membranes. CONCLUSION: The presence of TGF-alpha in the fallopian tube epithelium and its receptor on cumulus cells suggest a paracrine mechanism between maternal growth factors and the developing embryo.


Assuntos
Receptores ErbB/análise , Tubas Uterinas/química , Células da Granulosa/química , Fator de Crescimento Transformador alfa/análise , Desenvolvimento Embrionário e Fetal/fisiologia , Tubas Uterinas/citologia , Feminino , Células da Granulosa/citologia , Humanos , Imuno-Histoquímica , Oócitos/química , Gravidez
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