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1.
Int J Gynecol Cancer ; 15(6): 1187-90, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-16343210

RESUMEN

Villoglandular papillary adenocarcinoma (VGPA) of the uterine cervix is a rare neoplasm, and its treatment has rarely been reported. We report a patient with VGPA stage IIA responding to neoadjuvant chemotherapy with docetaxel (60 mg/m2 as an intravenous infusion) and cisplatin (70 mg/m2 as an intra-arterial infusion). At 3 weeks after completing one course of this regimen, the tumor size was reduced from 5.3 x 4.0 cm to 2.0 x 2.0 cm (81.1% reduction), revealed by computed tomography. Accordingly, the patient underwent radical hysterectomy, and there have been no signs of recurrence. Thus, the combination of docetaxel and cisplatin is suggested to be useful for neoadjuvant chemotherapy of cervical adenocarcinoma.


Asunto(s)
Adenocarcinoma Papilar/tratamiento farmacológico , Adenocarcinoma Papilar/patología , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Neoplasias del Cuello Uterino/tratamiento farmacológico , Neoplasias del Cuello Uterino/patología , Adenocarcinoma Papilar/cirugía , Cisplatino/administración & dosificación , Docetaxel , Femenino , Humanos , Histerectomía , Persona de Mediana Edad , Terapia Neoadyuvante , Taxoides/administración & dosificación , Resultado del Tratamiento , Neoplasias del Cuello Uterino/cirugía
2.
J Dent Res ; 82(10): 838-43, 2003 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-14514767

RESUMEN

Low bone mineral density and rapid bone loss of the skeleton are associated with mortality risk from vascular diseases in post-menopausal women. Panoramic radiographic measurements are considered as indicators of skeletal bone mineral density or bone turnover. We hypothesize that such measurements may be associated with vascular disease risk in post-menopausal women. Associations of mandibular cortical shape and width on panoramic radiographs with skeletal bone mineral density and risk factors related to vascular diseases were investigated in 87 post-menopausal women. Cortical shape was associated with skeletal bone mineral density, low-density lipoprotein cholesterol, apolipoprotein B, resting heart rate, and endothelial dysfunction. Cortical width was associated with skeletal bone mineral density, low-density lipoprotein cholesterol, and apolipoprotein A1. Dentists may be able to refer women with increased risk of vascular diseases, as well as low bone mineral density, to medical professionals for further examination by panoramic findings.


Asunto(s)
Mandíbula/diagnóstico por imagen , Posmenopausia , Radiografía Panorámica , Medición de Riesgo , Enfermedades Vasculares/diagnóstico , Absorciometría de Fotón , Anciano , Apolipoproteína A-I/sangre , Apolipoproteínas B/sangre , Índice de Masa Corporal , Densidad Ósea , Resorción Ósea/diagnóstico por imagen , LDL-Colesterol/sangre , Endotelio Vascular/fisiopatología , Femenino , Fémur/diagnóstico por imagen , Cuello Femoral/diagnóstico por imagen , Frecuencia Cardíaca/fisiología , Humanos , Vértebras Lumbares/diagnóstico por imagen , Persona de Mediana Edad
3.
Int J Oncol ; 21(4): 737-43, 2002 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-12239611

RESUMEN

The objective was to investigate the immunohistochemical expression of p27, cyclin E, and CDK2 in normal and cancerous endometrium. Expression of p27 in premenopausal normal endometrium was significantly higher than that in postmenopausal normal endometrium (p=0.019). A significantly lower amount of p27 staining was observed in endometrial cancer tissues from premenopausal women than in normal premenopausal endometrium (p=0.015). Cyclin E expression in premenopausal normal endometrium was significantly higher than that in postmenopausal normal endometrium (p=0.003). A significantly higher amount of cyclin E staining was observed in endometrial cancer tissues from postmenopausal women than in normal postmenopausal endometrium (p=0.017). Regarding menopausal status, no significant difference in CDK2 staining was observed between cancerous and normal endometrium. There was a positive significant correlation between cyclin E and CDK2 expression levels in endometrial cancers (p<0.05). Western blot analysis confirmed elevated p27 protein levels in samples with positive p27 immunostaining. Considerable levels of p27 mRNA were detected in all normal and cancerous samples examined by semi-quantitative PCR. No significant relationship was found between telomerase activity and its association with p27 and cyclin E expression in endometrial cancers. These findings suggested that the decreased expression of p27 caused by post-translational mechanism might play an important role in endometrial cancer development in premenopausal women. In addition, increased cyclin E expression may play an important role in endometrial cancer development in postmenopausal women.


Asunto(s)
Quinasas CDC2-CDC28 , Proteínas de Ciclo Celular/biosíntesis , Ciclina E/biosíntesis , Quinasas Ciclina-Dependientes/biosíntesis , Neoplasias Endometriales/metabolismo , Endometrio/metabolismo , Proteínas Serina-Treonina Quinasas/biosíntesis , Proteínas Supresoras de Tumor/biosíntesis , Western Blotting , Quinasa 2 Dependiente de la Ciclina , Inhibidor p27 de las Quinasas Dependientes de la Ciclina , Femenino , Humanos , Inmunohistoquímica , Metástasis Linfática , ARN Mensajero/metabolismo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Telomerasa/metabolismo
4.
Anticancer Res ; 21(4A): 2537-45, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11724319

RESUMEN

BACKGROUND: Deletions and point mutations of the p16 gene are detectable in more than 50% of ovarian cancer cells. In this study, we examined the effect of p16 gene transduction on the growth of ovarian cancer cells and on the effect of anti-cancer agents. MATERIALS AND METHODS: p16-null human ovarian cancer cell lines, SKOV-3 and OVCAR-5, were used in this study. We transduced the full-length human p16 gene using recombinant adenovirus (AxCA-hp16). RESULTS: The spontaneous growth of these cells was significantly inhibited by hp16 transduction. MTT assay revealed that AxCA-hp16 infection induced chemoresistance in both cell lines. Flow cytometric analysis revealed that only hp16 -transduced SKOV-3, were arrested at the G1-phase for 3 days whereas those infected with AxCA-mock and OVCAR-5 infected with both recombinant viruses did not. Western blot analysis showed increased microtubule-associated proteins 4 (MAP4) in both cell lines. CONCLUSION: These results suggest that in SKOV-3 cells, G1-arrest induced by p16-transduction prevents paclitaxel- and vindesine-induced cell death, and in OVCAR-5 cells, the other unknown mechanisms play a role of chemoresistance.


Asunto(s)
Antineoplásicos Fitogénicos/farmacología , Genes p16 , Neoplasias Ováricas/tratamiento farmacológico , Paclitaxel/farmacología , Transducción Genética , Vindesina/farmacología , Adenoviridae/genética , División Celular/efectos de los fármacos , División Celular/genética , Terapia Combinada , Inhibidor p16 de la Quinasa Dependiente de Ciclina/biosíntesis , Inhibidor p16 de la Quinasa Dependiente de Ciclina/genética , Inhibidor p16 de la Quinasa Dependiente de Ciclina/fisiología , Relación Dosis-Respuesta a Droga , Resistencia a Múltiples Medicamentos , Resistencia a Antineoplásicos , Femenino , Vectores Genéticos/genética , Humanos , Proteínas Asociadas a Microtúbulos/biosíntesis , Neoplasias Ováricas/genética , Neoplasias Ováricas/metabolismo , Neoplasias Ováricas/patología , Células Tumorales Cultivadas
6.
Atherosclerosis ; 158(2): 391-7, 2001 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-11583718

RESUMEN

The precise mechanism of the vasoprotective effect of estrogen replacement therapy in postmenopausal women is not fully understood. The present study sought to determine the role of nitric oxide (NO) and angiotensin-converting enzyme (ACE) in the vasodilator response of the forearm vessels induced by estrogen administration to postmenopausal women. Subjects were divided into two groups. One group received conjugated equine estrogen (0.625 mg daily) orally for 3 months (n=26), while the other received no treatment (control group, n=10). Forearm blood flow was measured by strain-gauge plethysmography. The concentrations of nitrite/nitrate (metabolites of NO), ACE activity, and lipid parameters were measured. Basal forearm blood flow, body weight, blood pressure, and heart rate were similar at baseline in both groups. After 3 months of estrogen administration, the maximal forearm blood flow response during reactive hyperemia and the serum level of nitrite/nitrate each showed a significant increase over baseline values: from 23.6+/-2.0 to 36.5+/-3.1 ml/min per 100 ml tissue (P<0.01), and from 24.8+/-2.3 to 38.6+/-3.6 micromol/l (P<0.01), respectively. Plasma levels of ACE activity were significantly reduced from baseline after 3 months of estrogen treatment (from 12.2+/-0.6 to 10.9+/-0.6 IU/l, P<0.01). No changes were seen in controls. The change in forearm blood flow after sublingual nitroglycerin was similar at baseline versus after 3 months of estrogen administration. The increase in the serum level of nitrite/nitrate after 3 months of estrogen therapy showed a significant inverse correlation (r=0.52, P<0.01) with the reduction in the plasma level of ACE activity. There was no significant correlation between the increase in serum nitrite/nitrate and any change in serum lipids, blood pressure, or other parameters. The administration of oral estrogen to postmenopausal women for 3 months increased the NO-mediated forearm endothelium-dependent vasodilatation. This was likely due, at least in part, to ACE inhibition. The latter may be one mechanism by which ERT provides its well-known cardiovascular benefit.


Asunto(s)
Velocidad del Flujo Sanguíneo/efectos de los fármacos , Terapia de Reemplazo de Estrógeno , Estrógenos Conjugados (USP)/farmacología , Peptidil-Dipeptidasa A/sangre , Vasodilatación/fisiología , Endotelio Vascular/fisiología , Femenino , Antebrazo/irrigación sanguínea , Humanos , Hiperemia/fisiopatología , Lípidos/sangre , Persona de Mediana Edad , Nitratos/sangre , Óxido Nítrico/fisiología , Nitritos/sangre , Nitroglicerina/farmacología , Peptidil-Dipeptidasa A/fisiología , Pletismografía , Posmenopausia , Vasodilatadores/farmacología
7.
J Soc Gynecol Investig ; 8(3): 179-85, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11390254

RESUMEN

OBJECTIVE: We investigated the relationship between cyclin E mRNA overexpression and p53 protein accumulation in epithelial ovarian cancers. METHODS: mRNA was isolated and cDNA was prepared from 36 epithelial ovarian tumors (three adenomas, three low malignant potential tumors, and 30 carcinomas), and six normal ovaries. The cyclin E mRNA expression levels relative to an internal control, beta-tubulin, were determined by semiquantitative polymerase chain reaction (PCR). Cyclin E and p53 protein expression in ovarian cancer tissues were examined by immunohistochemistry using the same series of samples. Fisher exact test of significance and an unpaired t test were used for statistical analysis. RESULTS: Considerable levels of cyclin E mRNA were detected in all normal ovaries and ovarian tumor samples examined by semiquantitative PCR amplification. mRNA levels of cyclin E were significantly higher in nine of 30 (30%) ovarian cancers compared with those in normal ovaries. The immunohistochemical expression of cyclin E protein was confirmed in the nuclei of tumor cells in 13 of 30 (43%) ovarian cancers. p53 protein accumulation was detected in 12 of 30 (40%) ovarian cancers examined. There was a significant inverse correlation between cyclin E mRNA overexpression and p53 protein accumulation (P <.01, Fisher exact test). CONCLUSIONS: Cyclin E mRNA overexpression frequently occurs in ovarian cancers without p53 protein accumulation. Cyclin E might have an important effect on the development of a limited number of ovarian cancers.


Asunto(s)
Adenoma/metabolismo , Carcinoma/metabolismo , Ciclina E/genética , Expresión Génica , Neoplasias Ováricas/metabolismo , Proteína p53 Supresora de Tumor/metabolismo , Adenoma/química , Ciclina E/análisis , Femenino , Humanos , Inmunohistoquímica , Neoplasias Ováricas/química , Ovario/química , Reacción en Cadena de la Polimerasa , ARN Mensajero/análisis , Tubulina (Proteína)/genética , Proteína p53 Supresora de Tumor/química
8.
Am J Clin Oncol ; 24(3): 215-21, 2001 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-11404488

RESUMEN

To identify prognostic factors for untreated ovarian cancer, DNA ploidy, proliferative index (P.I.) and epidermal growth factor receptor (EGFR) expression were analyzed in a prospective series of 40 patients with ovarian cancer and 7 patients with borderline malignant ovarian tumor followed up for 5 years or more (median, 77 months). The frequency of aneuploid cells was 53.8% (21/39) in ovarian cancer and 14.3% (1/7) in borderline malignancy. There was no significant association between DNA ploidy and the clinicopathologic findings, in which aneuploid ovarian cancer was more common among advanced tumors. The S-phase fraction and P.I. value were higher in the patients with aneuploid tumors (p = 0.076). EGFR expression was detected in 76.9% (30/39) of ovarian cancers and 42.9% (3/7) of borderline malignant ovarian tumors, and the mean EGFR level was 5.8 +/- 12.1 (range: 0-49.5) and 28.3 +/- 71.1 (range: 0-189.4) fmol/mg protein, respectively. There was no correlation between EGFR expression and DNA ploidy, P.I., and clinicopathologic findings analyzed. The 5-year survival rate in patients with aneuploid tumors was significantly worse in patients with ovarian cancer (p = 0.0165, log-rank test). No significant relationship was shown between P.I., EGFR expression, and 5-year survival. Cox multivariate analysis showed that DNA ploidy, P.I., and EGFR expression are not associated with the risk of death (p = 0.5917, p = 0.9924, and p = 0.6840, respectively), although clinical stage shows a significant relationship (p = 0.0027). Our data showed that DNA ploidy is significantly related to the prognosis by univariate analysis, but DNA ploidy, P.I., and EGFR expression were not independent prognostic factors for the untreated ovarian cancer.


Asunto(s)
Receptores ErbB/biosíntesis , Neoplasias Ováricas/genética , Neoplasias Ováricas/mortalidad , Femenino , Humanos , Análisis Multivariante , Neoplasias Ováricas/metabolismo , Ploidias , Pronóstico , Estudios Prospectivos , Tasa de Supervivencia
9.
Maturitas ; 38(3): 297-304, 2001 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-11358647

RESUMEN

OBJECTIVES: We investigated whether the phenotype of apolipoprotein E (apo E) would influence the response of postmenopausal Japanese women to hormone replacement therapy (HRT). METHODS: We measured the plasma levels of lipoprotein and apolipoprotein in 242 postmenopausal women at baseline and again after 12 months of HRT. Patients were divided into three groups according to apo E phenotype: E2+ (E2/2 and E2/3, n=21), E3/3 (n=176), E4+ (E3/4 and E4/4, n=45). RESULTS: We found that the E4+ group had the highest levels of total and low density lipoprotein (LDL) cholesterol and apolipoprotein B, being significantly higher than in the E2+ group at baseline. The plasma levels of total and LDL cholesterol showed a significant decrease only in the E2+ and E3/3 groups after 12 months of HRT (E2+ group, total cholesterol -8.9% and LDL cholesterol -21.5%; E3/3 group, total cholesterol -2.9% and LDL cholesterol -9.5%). No significant difference in the reduction of total and LDL cholesterol was found in the E4+ group. Other lipid parameters did not differ in the three groups. CONCLUSIONS: These data show that the apo E phenotype influenced the response of lipid metabolism in postmenopausal women to HRT, especially in the reduction of LDL cholesterol. Therefore, apo E phenotyping may be important in predicting the cholesterol-lowering effect of HRT.


Asunto(s)
Apolipoproteínas E/genética , Pueblo Asiatico/genética , LDL-Colesterol/sangre , Estrógenos Conjugados (USP)/uso terapéutico , Terapia de Reemplazo de Hormonas , Hipercolesterolemia/genética , Hipercolesterolemia/prevención & control , Acetato de Medroxiprogesterona/uso terapéutico , Adulto , Anciano , Apolipoproteínas E/sangre , Femenino , Humanos , Japón , Persona de Mediana Edad , Fenotipo , Posmenopausia , Estudios Prospectivos
10.
J Am Coll Cardiol ; 37(6): 1529-35, 2001 May.
Artículo en Inglés | MEDLINE | ID: mdl-11345361

RESUMEN

OBJECTIVES: We sought to evaluate the relationship between the angiotensin-converting enzyme (ACE) genotype and the change in forearm vasoreactivity in response to a three-month course of oral estrogen in postmenopausal women. BACKGROUND: The ACE genotype is a known predictor of the response to an ACE inhibitor drug; however, it is not clear whether it can modify the effect of estrogen replacement therapy (ERT) on endothelial function in postmenopausal women. METHODS: Fifty-five postmenopausal women received 0.625 mg of conjugated equine estrogen daily for three months. Forearm blood flow (FBF) was measured by strain-gauge plethysmography. RESULTS: Twenty-one, 25 and 9 patients had the insertion/deletion (ID), II and DD genotypes, respectively. Plasma ACE activity was significantly higher at baseline in patients with either the DD or ID genotype than in those with the II genotype (p < 0.05). A significant decrease in plasma ACE activity with ERT was seen in the ID and II genotypes (p < 0.05), but not in the DD genotype. There were no significant differences in the FBF responses to reactive hyperemia at baseline between the three groups. Estrogen replacement therapy did not alter the FBF response to reactive hyperemia in the DD genotype (4.0 +/- 1.3%), although ERT significantly increased the FBF response in the ID and II genotypes (32.6 +/- 7.5% and 30.6 +/- 6.5%, respectively; p < 0.05). Forearm blood flow after administration of sublingual nitroglycerin did not change over three months in any of the three groups. CONCLUSIONS: These findings suggest that the effect of ERT in postmenopausal women on forearm endothelial function may be determined in part by the genotype of the ACE gene.


Asunto(s)
Terapia de Reemplazo de Estrógeno , Estrógenos Conjugados (USP)/farmacología , Antebrazo/irrigación sanguínea , Peptidil-Dipeptidasa A/genética , Posmenopausia/efectos de los fármacos , Posmenopausia/genética , Vasodilatación/efectos de los fármacos , Vasodilatación/genética , Administración Oral , Administración Sublingual , Análisis de Varianza , Velocidad del Flujo Sanguíneo/efectos de los fármacos , Velocidad del Flujo Sanguíneo/genética , Femenino , Estudios de Seguimiento , Eliminación de Gen , Genotipo , Humanos , Persona de Mediana Edad , Mutagénesis Insercional/genética , Nitroglicerina/farmacología , Pletismografía , Polimorfismo Genético/genética , Valor Predictivo de las Pruebas , Sistema Renina-Angiotensina/efectos de los fármacos , Sistema Renina-Angiotensina/genética , Vasodilatación/fisiología , Vasodilatadores/farmacología
11.
Gynecol Endocrinol ; 15(2): 150-7, 2001 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-11379012

RESUMEN

The present study sought to determine the correlation between the vasodilator response of forearm resistance vessels and the circulating levels of nitric oxide (NO) after the administration of oral estrogen for 12 weeks to postmenopausal women. We classified postmenopausal women into two groups: those treated with conjugated equine estrogen (0.625 mg daily) orally for 12 weeks (n = 24) or those who received no treatment (control group, n = 8). Forearm blood flow was measured using strain-gauge plethysmography during hyperemia to evaluate endothelium-dependent vasodilation, and after sublingual nitroglycerin administration to evaluate endothelium-independent vasodilation. Serum levels of nitrite/nitrate (metabolites of NO) and lipid parameters were measured. Basal forearm blood flow, body weight and heart rate were similar in each group. After 12 weeks of estrogen administration, the maximal forearm blood flow response during reactive hyperemia and the serum level of nitrite/nitrate each showed a significant increase from 26.9 +/- 1.9 to 37.9 +/- 3.5 ml/min per 100 ml tissue (p < 0.01), and from 25.2 +/- 2.2 to 37.5 +/- 3.7 mumol/l (p < 0.05), respectively. No increases were seen in controls. The changes in forearm blood flow after sublingual nitroglycerin were similar before and after 12 weeks of estrogen administration. The increase in maximal forearm blood flow with reactive hyperemia was significantly correlated with the increase in nitrite/nitrate in the group administered estrogen (r = 0.48, p < 0.05). There was no significant correlation between maximal forearm blood flow with reactive hyperemia, nor any change in serum lipids, blood pressure or other parameters. In conclusion, the 12-week administration of oral estrogen increased forearm reactive hyperemia in postmenopausal women, probably via an increase in the production of NO.


Asunto(s)
Terapia de Reemplazo de Estrógeno , Antebrazo/irrigación sanguínea , Óxido Nítrico/sangre , Posmenopausia , Vasodilatación , Peso Corporal , Endotelio Vascular/fisiología , Femenino , Frecuencia Cardíaca , Humanos , Persona de Mediana Edad , Nitratos/sangre , Nitritos/sangre , Resistencia Vascular
12.
Hum Genet ; 108(2): 123-7, 2001 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-11281450

RESUMEN

We investigated whether the amount of circulating cell-free fetal DNA in maternal serum is influenced by fetal karyotype, using real-time quantitative polymerase chain reaction assay. Serum samples were obtained from pregnant women at gestational ages ranging from 15 to 17 weeks, prior to their undergoing amniocentesis. In total, we examined 70 samples consisting of 55 cases of pregnancy with 46,XY, 5 cases with 47,XY,+21, 3 cases with 47,XY,+18, a single case with 46,XY,dup(1) and 2 cases with twins of 46,XY, and 4 cases with 46,XX which were used as negative controls. We measured the concentration of the SRY sequence as a molecular marker for fetal DNA. The SRY sequence was detectable and measurable when the fetuses were male except for one case with 47,XY,+18. This case showed fetal growth retardation and bradycardia. No amplification signals of the SRY sequence were detected when the fetuses were female. The mean concentration of fetal DNA in maternal serum was 31.5 copies/ml in the pregnancy with 46,XY, 23.5 copies/ml in the pregnancies with 47,XY,+21 and 21.5 copies/ml in the pregnancies with 46,XY,+18. There were no significant differences in the concentration of fetal DNA between pregnancies with fetuses of normal karyotype and those with fetuses of abnormal karyotype.


Asunto(s)
Aneuploidia , ADN/sangre , Feto , Embarazo/sangre , Secuencia de Bases , Cartilla de ADN , Femenino , Humanos , Cariotipificación
13.
Int J Oncol ; 18(5): 953-8, 2001 May.
Artículo en Inglés | MEDLINE | ID: mdl-11295040

RESUMEN

Reduced expression of a cyclin-dependent kinase inhibitor, p27, has been reported to be associated with poor prognosis in several human cancers. The aim of this study was to investigate the potential role of p27 in ovarian cancer development and progression. Immunohistochemical expression of p27 was determined using 117 epithelial ovarian tumor tissues and 8 normal ovaries. p27 mRNA expression was examined by semi-quantitative PCR amplification using 26 ovarian cancer samples. Nuclear staining of p27 was commonly observed in the normal ovarian surface epithelium and the epithelial cells of germinal inclusion cysts. Positive p27 staining rates were significantly higher in serous adenomas (p=0.006) and in serous LMP tumors (p=0.013) than that in serous carcinomas (Fisher's exact test). In serous ovarian cancers, positive p27 staining rate was significantly higher in early stage (stage1/2) than that in advanced stage (stage 3/4) diseases (p=0.030, Fisher's exact test). Log-rank testing showed that negative p27 expression significantly correlates with poor survival in serous ovarian cancer patients (p=0.041). Considerable levels of p27 mRNA were detected in all ovarian cancer samples examined. These results suggest that the underexpression of p27 caused by post-translational mechanism may contribute to the development and progression and result in poor prognosis of serous ovarian cancers.


Asunto(s)
Proteínas de Ciclo Celular , Inhibidores Enzimáticos/metabolismo , Proteínas Asociadas a Microtúbulos/genética , Neoplasias Quísticas, Mucinosas y Serosas/metabolismo , Neoplasias Glandulares y Epiteliales/metabolismo , Neoplasias Ováricas/metabolismo , Proteínas Supresoras de Tumor , Inhibidor p27 de las Quinasas Dependientes de la Ciclina , Cartilla de ADN/química , Supervivencia sin Enfermedad , Femenino , Expresión Génica , Humanos , Técnicas para Inmunoenzimas , Proteínas Asociadas a Microtúbulos/metabolismo , Neoplasias Quísticas, Mucinosas y Serosas/diagnóstico , Neoplasias Quísticas, Mucinosas y Serosas/mortalidad , Neoplasias Glandulares y Epiteliales/diagnóstico , Neoplasias Glandulares y Epiteliales/mortalidad , Neoplasias Ováricas/diagnóstico , Neoplasias Ováricas/mortalidad , Pronóstico , ARN Mensajero/metabolismo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Tasa de Supervivencia
14.
Hypertension ; 37(2 Pt 2): 651-7, 2001 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-11230351

RESUMEN

Both menopause and hypertension are associated with endothelial dysfunction and are risk factors for coronary heart disease. We evaluated forearm resistance artery endothelial function in hypertensive postmenopausal women (HPW, n=57) and compared it with endothelial function in normotensive postmenopausal women (NPW, n=67). In addition, we evaluated the effects of long-term estrogen replacement therapy (ERT, conjugated equine estrogen at a dose of 0.625 mg daily for 12 weeks) on endothelial function in HPW (n=10) and NPW (n=35). Forearm blood flow (FBF) was measured by strain-gauge plethysmography during reactive hyperemia to assess endothelium-dependent vasodilation and after sublingual nitroglycerin (NTG) administration to assess endothelium-independent vasodilation. Basal FBF was similar in the NPW and HPW groups. The FBF in the HPW group during reactive hyperemia was significantly lower than that in the NPW group. Increases in FBF after NTG were similar in the 2 groups. ERT decreased the LDL cholesterol concentration and circulating ACE activity and increased estradiol and HDL cholesterol in both groups. Basal blood pressures, heart rate, FBF, and body weight did not change with ERT. After 12 weeks of ERT, the maximal FBF response during reactive hyperemia increased significantly in both groups. The improvement in reactive hyperemia after ERT was significantly greater in the HPW group than in the NPW group (49+/-8 versus 17+/-5%, P<0.05). Changes in FBF after sublingual NTG administration were similar before and after 12 weeks of ERT. These findings suggest that continued ERT improves forearm resistance artery endothelial function in postmenopausal women and that this beneficial effect is greater in patients that are hypertensive.


Asunto(s)
Enfermedades Cardiovasculares/prevención & control , Endotelio Vascular/efectos de los fármacos , Terapia de Reemplazo de Estrógeno , Hipertensión/fisiopatología , Posmenopausia , Presión Sanguínea , Endotelio Vascular/fisiología , Femenino , Antebrazo/irrigación sanguínea , Frecuencia Cardíaca , Humanos , Hiperemia/etiología , Hiperemia/fisiopatología , Persona de Mediana Edad , Nitroglicerina , Pletismografía , Flujo Sanguíneo Regional , Factores de Riesgo , Factores de Tiempo , Resistencia Vascular/efectos de los fármacos , Vasodilatación , Vasodilatadores
15.
Mol Hum Reprod ; 7(3): 271-7, 2001 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-11228247

RESUMEN

Membrane-type 1 matrix metalloproteinase (MT1-MMP) in endometrium and decidua may greatly affect attachment of the embryo to the epithelium, invasion of the trophoblast into the stroma, and extracellular matrix remodelling in the endometrium and decidua. We investigated the expression of this enzyme in normally cycling endometrium and in decidua associated with normal and tubal pregnancies at both the gene and protein level. Localization of expression (but not the overall level of expression), differed between endometrium and decidua parietalis and tubal pregnancy decidua. MT1-MMP mRNA was expressed mainly in epithelium and only faintly in stroma throughout the menstrual cycle, while in decidua parietalis and tubal pregnancy decidua, this mRNA was expressed predominantly in stromal cells. MT1-MMP protein was detected in the epithelium alone throughout the menstrual cycle, while in decidua parietalis and tubal pregnancy decidua, it was detected in stromal cells as well as the epithelium. Since decidua showed altered expression in the absence of trophoblastic contact, trophoblast invasion may not directly affect MT1-MMP gene expression.


Asunto(s)
Decidua/enzimología , Metaloproteinasa 1 de la Matriz/genética , Trofoblastos/fisiología , Adulto , Decidua/patología , Femenino , Expresión Génica , Humanos , Técnicas para Inmunoenzimas , Hibridación in Situ/métodos , Metaloproteinasa 1 de la Matriz/biosíntesis , Persona de Mediana Edad , Embarazo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa
16.
Hum Reprod ; 16(4): 703-8, 2001 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-11278222

RESUMEN

Frequencies of disomy and diploidy in spermatozoa for chromosomes X, Y and 18 were compared among severe oligozoospermic men (<5x10(6) spermatozoa/ml), oligozoospermic men (5-20x10(6) spermatozoa/ml), and normospermic men using three-colour fluorescence in-situ hybridization (FISH). Semen samples were collected from 10 severe oligozoospermic men aged 26-49 years, 10 oligozoospermic men aged 27-48 years and seven normospermic men aged 25-31 years. Karyotypes in lymphocytes obtained from peripheral blood were all 46,XY. In severe oligozoospermic men, analysis of 200 interphases per individual using FISH showed XY constitutions for sex chromosomes in all cells. A minimum of 10 000 sperm nuclei per individual for each chromosome was evaluated in severe oligozoospermic men and oligozoospermic men, and a minimum of 6000 sperm nuclei per individual in normospermic men. In total, 245 707 sperm nuclei were evaluated. The hybridization efficiency was 99.8%. The severe oligozoospermic men showed significantly higher frequencies of XY disomy (0.41%) and diploidy (0.49%) compared with oligozoospermic men (0.16%, P < 0.01; 0.22%, P < 0.05) and normospermic men (0.18%, P < 0.05; 0.21%, P < 0.05) (Mann-Whitney U-test). The data suggest that when severe oligozoospermic men undergo intracytoplasmic sperm injection, there can be an increase in the rate of conceptuses with 47,XXY chromosomes.


Asunto(s)
Aberraciones Cromosómicas , Oligospermia/genética , Espermatozoides/fisiología , Cromosoma X , Cromosoma Y , Adulto , Cromosomas Humanos Par 18 , Diploidia , Humanos , Hibridación Fluorescente in Situ , Cariotipificación , Masculino , Persona de Mediana Edad , Valores de Referencia
17.
Genes Chromosomes Cancer ; 30(2): 196-201, 2001 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-11135437

RESUMEN

Chromosome rearrangements involving 12q15 are frequently observed in a variety of human mesenchymal tumors. The high mobility group protein gene HMGIC has been identified as the target involved in these rearrangements. Uterine leiomyomas frequently use chromosome band 14q24 as a translocation partner to HMGIC. Recent studies within the chromosome 14 breakpoint region in cell lines carrying t(12;14)(q15;q23-24) revealed that RAD51L1, a member of the RAD51 recombination gene family, is the HMGIC partner. Using RT-PCR, we screened a panel of 81 uterine leiomyomas removed from 30 women for rearrangement between RAD51L1 and HMGIC. This is the first molecular analysis in which primary tumors have been examined for the RAD51L1/HMGIC transcripts. The chimeric transcripts were identified from two cases in which exon 7 of the RAD51L1 gene is fused in frame to either exon 2 or exon 3 of the HMGIC gene. These transcripts encode fusion proteins containing RAD51L1 nucleotide binding domains and the HMGIC protein lacking the N-terminal AT hook motifs. The detection of the RAD51L1/HMGIC fusion in primary tumors adds to the accumulating evidence implicating this fusion in a proportion of uterine leiomyoma patients.


Asunto(s)
Proteínas de Unión al ADN/genética , Proteínas del Grupo de Alta Movilidad/genética , Leiomioma/genética , Proteínas de Fusión Oncogénica/genética , Translocación Genética , Neoplasias Uterinas/genética , Adulto , Empalme Alternativo/genética , Femenino , Proteína HMGA2 , Humanos , Leiomioma/etiología , Persona de Mediana Edad , Recombinasa Rad51 , Eliminación de Secuencia/genética , Neoplasias Uterinas/etiología
18.
Clin Chem ; 47(1): 41-6, 2001 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-11148175

RESUMEN

BACKGROUND: Fetal DNA has been found in maternal plasma and serum. Diagnosis of fetal gender using maternal plasma and serum has been attempted in an effort to develop a new noninvasive method of prenatal diagnosis. METHODS: Peripheral blood samples were obtained from 61 pregnant women at 10-17 weeks of gestation before amniocentesis. DNA was extracted from 800 microL of each plasma or serum sample. To detect the Y-chromosome-specific sequences DYS14 and DYZ3 in the maternal plasma and serum, 40 cycles of PCR were carried out for each DNA extract. The PCR products were analyzed by 2.5% agarose gel electrophoresis and ethidium bromide staining, and the results were compared with the results of the cytogenetic analyses of amniocentesis. RESULTS: Cytogenetic analysis of amniocentesis revealed that 31 pregnant women had a male fetus and the remaining 30 pregnant women had a female fetus. Both DYS14 and DYZ3 were detected in 27 of the 31 plasma samples obtained from pregnant women carrying a male fetus and in all of 31 serum samples obtained from the same women. Neither DYS14 nor DYZ3 was detected in either the plasma or serum samples obtained from any of the 30 pregnant women carrying a female fetus. CONCLUSION: PCR analysis of maternal serum can be used to diagnose fetal gender.


Asunto(s)
ADN/sangre , Feto/metabolismo , Embarazo/sangre , Análisis para Determinación del Sexo , Femenino , Humanos , Masculino , Reacción en Cadena de la Polimerasa , Diagnóstico Prenatal/métodos , Cromosoma Y
19.
Oncol Rep ; 8(1): 119-25, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11115582

RESUMEN

We randomized patients with locally advanced cervical cancer to receive radiotherapy combined with transcatheter arterial infusion (TAI) of cisplatin or oral fluoropyrimidine anticancer agents, and compared the prognosis by a prospective follow-up study. Sixty patients were studied who completed their planned radiation therapy with chemotherapy at the Department of Obstetrics and Gynecology of Hiroshima University Hospital between January 1991 and December 1998. Patients were randomly assigned to receive (A) radiotherapy with TAI of 120 mg/body cisplatin twice a month at the interval of 4 weeks or (B) radiotherapy with 200 mg/day oral 5-FU or UFT every day. In both groups, radiotherapy is routinely 50 Gy of external beam irradiation to the whole pelvis and 18-20 Gy (point A dose) of intracavitary irradiation using a remote after loading system (RALS). Serious adverse reactions interfering with treatment did not appear in either group. The effective histologic response was 28/32 (87.5%) in group A and 25/28 (89.3%) in group B. The median follow-up period were 28.3 months and 25.4 months in group A and B, respectively. There was no significant difference in the overall survival and disease-free survival rates for all patients, clinical stage III and squamous cell carcinoma. We could not conclude that radiotherapy with TAI of cisplatin achieved superior therapeutic efficacy in locally advanced cervical cancer. To improve the therapeutic effects, it is important to establish a new cisplatin-containing chemoradiotherapy regimen.


Asunto(s)
Adenocarcinoma/tratamiento farmacológico , Antimetabolitos Antineoplásicos/uso terapéutico , Antineoplásicos Alquilantes/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Quimioterapia Adyuvante , Cisplatino/uso terapéutico , Fluorouracilo/uso terapéutico , Neoplasias del Cuello Uterino/tratamiento farmacológico , Adenocarcinoma/mortalidad , Adenocarcinoma/patología , Adenocarcinoma/radioterapia , Administración Oral , Adulto , Anciano , Antimetabolitos Antineoplásicos/administración & dosificación , Antineoplásicos Alquilantes/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/radioterapia , Cisplatino/administración & dosificación , Estudios de Cohortes , Terapia Combinada , Supervivencia sin Enfermedad , Femenino , Fluorouracilo/administración & dosificación , Estudios de Seguimiento , Humanos , Infusiones Intraarteriales , Tablas de Vida , Persona de Mediana Edad , Estudios Prospectivos , Análisis de Supervivencia , Tegafur/administración & dosificación , Resultado del Tratamiento , Uracilo/administración & dosificación , Neoplasias del Cuello Uterino/mortalidad , Neoplasias del Cuello Uterino/patología , Neoplasias del Cuello Uterino/radioterapia
20.
Int J Gynecol Cancer ; 11(6): 454-61, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11906548

RESUMEN

We have previously reported that the stratum corneum chymotryptic enzyme (SCCE) is overexpressed in ovarian cancers and that SCCE has potential as a useful marker and/or a therapeutic target for ovarian carcinoma. Antileukoprotease (ALP) has been shown to be a specific inhibitor of SCCE. The objective of this study was to investigate the potential cotranscription and overexpression of ALP in carcinoma of the ovary. The expression of ALP transcript was evaluated by Northern blot hybridization and by semiquantitative polymerase chain reaction (PCR) technique. The presence of the ALP protein in ovarian tumor cells was evaluated by immunohistochemistry. Northern blot hybridization showed that the ALP transcript was abundant in ovarian carcinomas but was not detected in the normal ovary. Semi-quantitative PCR examination revealed that the mRNA level of ALP was significantly elevated in low-malignant-potential tumors and in ovarian carcinomas compared with that in normal ovaries (P < 0.01). There was significant positive correlation between SCCE and ALP mRNA overexpression status in ovarian tumor cases (P < 0.01). Immunohistochemical expression of ALP protein was observed in ovarian tumor cells, whereas little or no staining was observed in normal ovarian surface epithelium. Like SCCE, ALP is highly overexpressed in ovarian tumor cells, which begs the question of whether it remains an effective inhibitor of SCCE or whether it is discordant in time or space and is ineffective as an inhibitor of the SCCE enzyme.


Asunto(s)
Regulación Enzimológica de la Expresión Génica/fisiología , Neoplasias Ováricas/enzimología , Proteínas/metabolismo , Serina Endopeptidasas/metabolismo , Adenocarcinoma de Células Claras/enzimología , Adenocarcinoma de Células Claras/patología , Adenocarcinoma Mucinoso/enzimología , Adenocarcinoma Mucinoso/patología , Northern Blotting , Carcinoma Endometrioide/enzimología , Carcinoma Endometrioide/patología , Cistadenocarcinoma Seroso/enzimología , Cistadenocarcinoma Seroso/patología , Cartilla de ADN/química , Femenino , Humanos , Técnicas para Inmunoenzimas , Calicreínas , Estadificación de Neoplasias , Neoplasias Ováricas/patología , Ovario/enzimología , Ovario/patología , Proteínas Inhibidoras de Proteinasas Secretoras , Proteínas/genética , ARN Mensajero/metabolismo , ARN Neoplásico/metabolismo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Proteínas y Péptidos Salivales/genética , Proteínas y Péptidos Salivales/metabolismo , Serina Endopeptidasas/genética , Inhibidores de Serina Proteinasa/genética , Inhibidores de Serina Proteinasa/metabolismo , Distribución Tisular
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