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1.
BJOG ; 125(4): 487-493, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-28294527

RESUMEN

OBJECTIVE: To investigate pregnancy outcomes, especially the risk of pregnancy-related aortic dissection (AD), in patients with Marfan syndrome (MFS) after prophylactic aortic root replacement (ARR). DESIGN: Retrospective case series study. SETTING: Tertiary perinatal care centre at a university hospital. POPULATION: Pregnant women fulfilling the revised Ghent nosology (2010) criteria for MFS who were managed at our institute. METHODS: The pregnancy outcomes of all patients with MFS managed at our institute between 1982 and September 2016 were reviewed retrospectively based on medical records. MAIN OUTCOME MEASURES: Obstetrical management and complication including the incidence of AD throughout the peripartum period. RESULTS: Among 22 patients (28 pregnancies) who had been managed as potential MFS or related disorders, 14 (17 pregnancies) fulfilled the revised Ghent nosology (2010) criteria for MFS and were enrolled in this study. Five patients (five pregnancies) had received ARR before conception: three (60%) developed type B aortic dissection [AD(B)] during the peripartum period, compared with only one of 10 patients (12 pregnancies) without ARR (P < 0.05, Chi-square test). CONCLUSIONS: Our study results suggest that MFS patients after prophylactic ARR are still at high risk of AD(B) during the peripartum period. Careful pre-pregnancy counselling and multidisciplinary care throughout the peripartum period are essential for the management of MFS, even after surgical repair of an ascending aortic aneurysm. TWEETABLE ABSTRACT: MFS patients after prophylactic ARR are still at high risk of type B aortic dissection during the peripartum period.


Asunto(s)
Enfermedades de la Aorta/cirugía , Disección Aórtica , Síndrome de Marfan , Complicaciones Posoperatorias , Complicaciones Cardiovasculares del Embarazo , Procedimientos Quirúrgicos Vasculares/efectos adversos , Adulto , Disección Aórtica/epidemiología , Disección Aórtica/etiología , Disección Aórtica/prevención & control , Disección Aórtica/terapia , Enfermedades de la Aorta/diagnóstico , Enfermedades de la Aorta/etiología , Femenino , Humanos , Incidencia , Japón/epidemiología , Síndrome de Marfan/complicaciones , Síndrome de Marfan/diagnóstico , Síndrome de Marfan/epidemiología , Periodo Periparto , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/prevención & control , Complicaciones Posoperatorias/terapia , Embarazo , Complicaciones Cardiovasculares del Embarazo/epidemiología , Complicaciones Cardiovasculares del Embarazo/prevención & control , Complicaciones Cardiovasculares del Embarazo/terapia , Resultado del Embarazo , Embarazo de Alto Riesgo , Estudios Retrospectivos , Ajuste de Riesgo/métodos , Procedimientos Quirúrgicos Vasculares/métodos
2.
Ultrasound Obstet Gynecol ; 48(3): 318-32, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27349699

RESUMEN

The IDEA (International Deep Endometriosis Analysis group) statement is a consensus opinion on terms, definitions and measurements that may be used to describe the sonographic features of the different phenotypes of endometriosis. Currently, it is difficult to compare results between published studies because authors use different terms when describing the same structures and anatomical locations. We hope that the terms and definitions suggested herein will be adopted in centers around the world. This would result in consistent use of nomenclature when describing the ultrasound location and extent of endometriosis. We believe that the standardization of terminology will allow meaningful comparisons between future studies in women with an ultrasound diagnosis of endometriosis and should facilitate multicenter research. Copyright © 2016 ISUOG. Published by John Wiley & Sons Ltd.


Asunto(s)
Consenso , Endometriosis/diagnóstico por imagen , Enfermedades Peritoneales/diagnóstico por imagen , Ultrasonografía , Endometriosis/patología , Femenino , Humanos , Pelvis/patología , Enfermedades Peritoneales/patología , Guías de Práctica Clínica como Asunto
3.
Br J Cancer ; 109(12): 3042-8, 2013 Dec 10.
Artículo en Inglés | MEDLINE | ID: mdl-24231951

RESUMEN

BACKGROUND: In multicellular organisms, precise control of cell cycle and the maintenance of genomic stability are crucial to prevent chromosomal alterations. The accurate function of the DNA damage pathway is maintained by DNA repair mechanisms including homologous recombination (HR). Herein, we show that both TFII-I and DBC1 mediate cellular mechanisms of cell-cycle regulation and DNA double strand damage repair. METHODS: Regulation of cell cycle by TFII-I and DBC1 was investigated using Trypan blue dye exclusion test, luciferase assay, and flow cytometry analysis. We also analysed the role of TFII-I and DBC1 in DNA double strand damage repair after irradiation by immunofluorescence study, clonogenicity assay, and HR assay. RESULTS: Flow cytometry analysis revealed a novel function that siRNA-mediated knockdown of endogenous DBC1 resulted in G2/M phase arrest. We also have shown that both endogenous TFII-I and DBC1 activate DNA repair mechanisms after irradiation because irradiation-induced foci formation of TFII-I-γH2AX was observed, and the depletion of endogenous TFII-I or DBC1 resulted in the inhibition of normal HR efficiency. CONCLUSION: These results reveal novel mechanisms by which TFII-I and DBC1 can modulate cellular fate by affecting cell-cycle control as well as HR pathway.


Asunto(s)
Proteínas Adaptadoras Transductoras de Señales/fisiología , Puntos de Control del Ciclo Celular/fisiología , Roturas del ADN de Doble Cadena , Reparación del ADN , Factores de Transcripción TFII/fisiología , Puntos de Control del Ciclo Celular/genética , División Celular/genética , División Celular/fisiología , Línea Celular , Línea Celular Tumoral , ADN/química , ADN/genética , ADN/metabolismo , ADN/efectos de la radiación , Citometría de Flujo , Puntos de Control de la Fase G2 del Ciclo Celular/genética , Puntos de Control de la Fase G2 del Ciclo Celular/fisiología , Humanos , Factores de Transcripción TFII/genética , Factores de Transcripción TFII/metabolismo
4.
BJOG ; 119(2): 177-86, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21794070

RESUMEN

OBJECTIVE: To assess the cost-effectiveness of universal vaccination of 11-year-old girls against human papillomavirus (HPV) infection and increased screening coverage to prevent cervical cancer in Japan where the coverage of Papanicolaou smears is very low. DESIGN: A cost-utility analysis from a societal perspective. SETTING: Japan, 2010. POPULATION: The female Japanese population aged 11 years or older. METHODS: A Markov model of the natural history of cervical cancer was constructed to compare six strategies: i.e. a screening coverage rate of 20, 50 and 80% with and without routine vaccination at age 11. MAIN OUTCOME MEASURES: Cervical cancer incidence, quality-adjusted life years (QALYs), costs and incremental cost-effectiveness ratios. RESULTS: Expanding the coverage of Papanicolaou smears from the current level of 20-50 and 80% yields a 45.5 and 63.1% reduction in cervical cancer incidence, respectively. Impact of combined strategies increases with coverage. Coverages of 20, 50 and 80% showed a 66.1, 80.9 and 86.8% reduction in disease, respectively. The costs of strategies with vaccination are four times higher than the cost of strategies without vaccination. Vaccinating all 11-year-old girls with bivalent vaccines with a Papanicolaou smear coverage rate of 50% is likely to be the most cost-effective option among the six strategies. CONCLUSIONS: The introduction of HPV vaccination in Japan is cost-effective as in other countries. It is more cost-effective to increase the coverage of the Papanicolaou smear along with the universal administration of HPV vaccine.


Asunto(s)
Detección Precoz del Cáncer/economía , Infecciones por Papillomavirus/economía , Vacunas contra Papillomavirus/economía , Neoplasias del Cuello Uterino/economía , Niño , Análisis Costo-Beneficio , Femenino , Humanos , Japón/epidemiología , Infecciones por Papillomavirus/mortalidad , Infecciones por Papillomavirus/prevención & control , Pronóstico , Años de Vida Ajustados por Calidad de Vida , Factores de Riesgo , Tasa de Supervivencia , Neoplasias del Cuello Uterino/mortalidad , Neoplasias del Cuello Uterino/virología , Vacunación/economía
5.
SAGE Open Med ; 9: 20503121211005992, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35154758

RESUMEN

OBJECTIVE: Long-term administration of dienogest, which is known to have effect on bone mineral density, is frequently done in patients with endometriosis and adenomyosis, but a few studies focused on the bone mineral density changes after finishing the long-term therapy. This study aimed to reveal the factors that adversely affect lumbar bone mineral density. METHOD: Fifty-seven premenopausal women who visited our hospital were diagnosed as either endometriosis or adenomyosis, and they were treated by dienogest for more than 115 weeks (26.5 months). Based on a previous report, bone mineral density changes less than 2% was categorized as the osteopenic group (n = 30), and the others were assigned to the unchanged group (n = 27). Bone mineral density was measured at the lumbar spine using dual-energy X-ray absorptiometry. A representative ovarian reserve marker, endogenous estradiol levels, and follicle-stimulating hormone levels were measured over time and were compared between the osteopenic and unchanged groups. RESULT: Duration of dienogest intake was 59.5 months (osteopenic group) versus 57.5 months (unchanged group). These patients experienced ovarian surgeries in a similar frequency, but the ovarian reserve in osteopenic group was impaired as suggested by the decline of endogenous estradiol level during intake of dienogest compared to that of unchanged group (p = 0.0146). Endogenous follicle-stimulating hormone level between osteopenic group and unchanged group did not reach statistically significant difference, although the osteopenic group showed relatively higher level. CONCLUSION: This study might suggest that decreased ovarian reserve as judged by endogenous estradiol level is a factor that negatively affect bone mineral density, and measurement of endogenous estradiol level during intake of dienogest could have a predictive meaning of future decreased bone mineral density level.

6.
Hum Reprod ; 25(10): 2475-9, 2010 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-20719814

RESUMEN

BACKGROUND: The relationship between fibroids and infertility remains an unsolved question, and management of intramural fibroids is controversial. During the implantation phase, uterine peristalsis is dramatically reduced, which is thought to facilitate embryo implantation. Our aims were to evaluate (i) the occurrence and frequency of uterine peristalsis in infertile women with intramural fibroids and (ii) whether the presence of uterine peristalsis decreases the pregnancy rate. METHODS: Ninety-five infertile patients with uterine fibroids were examined using magnetic resonance imaging (MRI). Inclusion criteria were as follows: (i) presence of intramural fibroids, excluding submucosal type; (ii) no other significant infertility factors (excluding endometriosis); and (iii) regular menstrual cycles, and MRI performed at the time of implantation (luteal phase day 5-9). The frequency of junctional zone movement was evaluated using cine-mode-display MRI. After MRI, patients underwent infertility treatment for up to 4 months, and the pregnancy rate was evaluated prospectively. RESULTS: Fifty-one patients fulfilled the inclusion criteria, and 29 (57%) and 22 (43%) patients were assigned to the low (0 or 1 time/3 min) or high frequency (≥ 2 times/3 min) uterine peristalsis group, respectively. Endometriosis incidence was the same in both groups. Ten out of the 29 patients (34%) in the low-frequency group achieved pregnancy, compared with none of the 22 patients (0%) in the high-frequency group (P< 0.005). Comparing pregnant and non-pregnant cases, 4 of 10 patients (40%) and 9 of 41 patients (22%), respectively, had endometriosis (not significant). CONCLUSIONS: A higher frequency of uterine peristalsis during the mid-luteal phase might be one of the causes of infertility associated with intramural-type fibroids.


Asunto(s)
Infertilidad Femenina/etiología , Leiomioma/fisiopatología , Peristaltismo , Complicaciones Neoplásicas del Embarazo/fisiopatología , Índice de Embarazo , Neoplasias Uterinas/fisiopatología , Adulto , Clomifeno/uso terapéutico , Endometriosis/diagnóstico , Femenino , Fármacos para la Fertilidad Femenina/uso terapéutico , Humanos , Infertilidad Femenina/tratamiento farmacológico , Leiomioma/complicaciones , Imagen por Resonancia Magnética , Menotropinas/uso terapéutico , Inducción de la Ovulación , Embarazo , Estudios Prospectivos , Estudios Retrospectivos , Neoplasias Uterinas/complicaciones
7.
Hum Reprod ; 24(12): 3042-8, 2009 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-19684045

RESUMEN

BACKGROUND: The aim of this study was to evaluate the impact of post-operative oral contraceptives (OCs) use on the rate of recurrence after laparoscopic excision of ovarian endometrioma. METHODS: In May 2005, we introduced a 'post-operative OC recommendation' for patients treated with laparoscopic excision of endometrioma. That is, at the time of the operation, we provided each patient with information about OC, known and possible benefits and risks and let her decide whether to take OC. A retrospective cohort study included 87 patients who underwent a laparoscopy after May 2005. The endometrioma recurrence rate at 24 months was compared between those who used OC for the entire follow-up period OC (n = 34) and all of the others (n = 53). We also performed logistic regression analysis to identify variables associated with recurrence. A before-after study included another 224 patients who underwent a laparoscopy before May 2005 and compared the recurrence rate before and after introduction of the 'post-operative OC recommendation'. RESULTS: The recurrence rate in those who used OC for the entire period was significantly lower than in the 'others' group (2.9 versus 35.8%, relative risk 0.082, 95% CI 0.012-0.58, P < 0.001). Post-operative OC was determined as an independent variable associated with lower recurrence (OR 0.054, 95% CI 0.007-0.429, P < 0.001). The overall recurrence rate in patients who underwent laparoscopy after the introduction of the 'post-operative OC recommendation' was significantly lower than that in patients who received laparoscopy before the introduction (18.6 versus 33.1%, relative risk 0.56, 95% CI 0.32-0.97, P < 0.05). CONCLUSIONS: Post-operative OC use reduces the risk of ovarian endometrioma recurrence after laparoscopic excision. This information will help in appropriate planning of pre- and post-operative management.


Asunto(s)
Anticonceptivos Orales/uso terapéutico , Endometriosis/tratamiento farmacológico , Laparoscopía , Enfermedades del Ovario/tratamiento farmacológico , Ovariectomía , Adulto , Protocolos Clínicos , Terapia Combinada/estadística & datos numéricos , Endometriosis/prevención & control , Endometriosis/cirugía , Femenino , Humanos , Laparoscopía/estadística & datos numéricos , Enfermedades del Ovario/prevención & control , Enfermedades del Ovario/cirugía , Ovariectomía/estadística & datos numéricos , Cooperación del Paciente , Periodo Posoperatorio , Estudios Retrospectivos , Riesgo , Prevención Secundaria , Estadística como Asunto
8.
Eur J Pain ; 22(3): 501-510, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29034546

RESUMEN

BACKGROUND: Endometriosis is a gynaecological disease exhibiting severe pelvic pain, but the mechanism of pain production remains unknown. Bradykinin (BK) is known as an inflammatory mediator, and shows elevated levels in inflammatory diseases such as rheumatoid arthritis. In the present study, we evaluated whether BK is involved in endometriosis-related pain. METHODS: Endometriotic lesions were used for immunohistochemistry. Primary cultures of endometriotic stromal cells (ESC) were stimulated with IL-1ß and/or BK. Quantitative RT-PCR was used to evaluate the mRNA expressions of BK receptors (BKR) and endothelin-1 in ESC. The concentration of endothelin-1 in cystic fluid of endometrioma or non-endometrioma was measured with ELISA. The conditioned medium of ESC stimulated with IL-1ß and/or BK was injected intraplantarly in mice, and evaluated whether pain-related licking behaviour was elicited. RESULTS: The expressions of BK and BKR in endometriotic lesions were observed by immunohistochemistry. In vitro experiments showed that IL-1ß induced BKR-B1 and B2 on ESC. Activation of these receptors by BK significantly induced endothelin-1 expression in ESC, which was negated completely by HOE-140, a BKR-B2 antagonist. The cystic fluid of endometrioma contained higher amount of endothelin-1 compared to non-endometrioma. Intraplantar injection of the conditioned medium of ESC treated with IL-1ß and BK significantly induced licking behaviour, which was suppressed with BQ-123, an endothelin type-A receptor antagonist. CONCLUSIONS: The present study demonstrated the presence and the function of the BK axis in endometriosis, and established a potential new therapy target for endometriosis-related pain. SIGNIFICANCE: The present study demonstrated (1) the presence and the function of the BK system in endometriosis, (2) activation of BKR induced endothelin-1 in endometriotic lesion and (3) blocking endothelin-1 was effective to decrease pain.


Asunto(s)
Bradiquinina/metabolismo , Endometriosis/metabolismo , Endotelina-1/metabolismo , Dolor/metabolismo , Receptores de Bradiquinina/metabolismo , Células del Estroma/metabolismo , Animales , Conducta Animal/efectos de los fármacos , Bradiquinina/análogos & derivados , Bradiquinina/farmacología , Antagonistas del Receptor de Bradiquinina B2/farmacología , Estudios de Casos y Controles , Células Cultivadas , Medios de Cultivo Condicionados/farmacología , Líquido Quístico/metabolismo , Endotelina-1/efectos de los fármacos , Endotelina-1/genética , Endotelina-1/farmacología , Femenino , Humanos , Interleucina-1beta/farmacología , Ratones , Enfermedades del Ovario/metabolismo , Enfermedades Peritoneales/metabolismo , ARN Mensajero/metabolismo , Receptores de Bradiquinina/efectos de los fármacos , Receptores de Bradiquinina/genética , Células del Estroma/efectos de los fármacos
9.
Mol Endocrinol ; 11(11): 1659-68, 1997 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-9328348

RESUMEN

Receptors for the glycoprotein hormones, LH/CG, FSH, and TSH, are a unique subclass of the seven-transmembrane, G protein-coupled proteins with a large N-terminal extracellular (ecto-) domain. Although ecto-domains of gonadotropin receptors confer ligand binding, expression of soluble binding proteins has been difficult. We fused the ecto-domains of LH or FSH receptors to the single-transmembrane domain of CD8 and found that hybrid proteins anchored on the cell surface retained high-affinity ligand binding. Inclusion of a junctional thrombin cleavage site in the hybrids allowed generation of soluble receptor fragments that interfered with gonadotropin binding to their receptors and blocked cAMP production stimulated by gonadotropins. Cross-linking analyses confirmed the formation of high molecular weight complexes between receptor ecto-domains and their specific ligands. A similar approach also generated a soluble TSH receptor fragment capable of blocking TSH-induced signal transduction. When administered to rats, the soluble FSH receptor fragment retarded testis growth and induced testis cell apoptosis. These findings demonstrate the feasibility of generating ligand-binding regions of glycoprotein hormone receptors to selectively neutralize actions of gonadotropins and TSH, thus allowing future design of novel contraceptives and management of different gonadal and thyroid dysfunction. The present study represents the first successful derivation of soluble, ligand-binding domains from glycoprotein hormone receptors as functional antagonists. Similar approaches could allow generation of ecto-domains of related receptors to neutralize actions of ligands or receptor antibodies and to facilitate structural-functional analysis.


Asunto(s)
Fragmentos de Péptidos/farmacología , Receptores de HFE/agonistas , Receptores de HL/agonistas , Receptores de Tirotropina/agonistas , Transducción de Señal/efectos de los fármacos , Animales , Apoptosis/efectos de los fármacos , Antígenos CD8/biosíntesis , Antígenos CD8/química , Antígenos CD8/genética , Línea Celular , Anticonceptivos/química , Anticonceptivos/farmacología , AMP Cíclico/biosíntesis , Diseño de Fármacos , Proteínas de Unión al GTP/fisiología , Vectores Genéticos , Humanos , Ligandos , Masculino , Mutagénesis Sitio-Dirigida , Nucleopoliedrovirus/genética , Fragmentos de Péptidos/química , Unión Proteica , Conformación Proteica , Ratas , Ratas Sprague-Dawley , Receptores de HFE/química , Receptores de HFE/genética , Receptores de HL/química , Receptores de HL/genética , Receptores de Tirotropina/química , Receptores de Tirotropina/genética , Proteínas Recombinantes de Fusión/efectos de los fármacos , Spodoptera , Relación Estructura-Actividad , Testículo/efectos de los fármacos , Testículo/patología
10.
Placenta ; 36(6): 667-73, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25814471

RESUMEN

INTRODUCTION: Viperin, a virus-inducible antiviral protein, has been reported to inhibit the replication of a variety of viruses. However, its expression and function in trophoblast cells remains unclear. Toll-like receptor 3 (TLR3) is a key component of the innate immune system that recognizes viral double-stranded RNA and triggers immune reactions by producing type I interferon. We hypothesized that viperin inhibits the replication of human cytomegalovirus (HCMV) in trophoblast cells. METHODS: In situ examinations of viperin expression was conducted in the human first-trimester placenta by immunohistochemical staining. Using a human trophoblast cell culture system, we studied the effect of TLR-3 ligation on viperin expression by treating trophoblasts with polyinosinic-polycytidylic acid [Poly (I: C)] (a synthetic double-stranded RNA, which mimics viral RNA). Viperin mRNA and protein expression were evaluated by real-time PCR and Western blot analysis. In a HCMV infected Swan 71 cell model, HCMV immediate early 1 (IE1) protein mRNA expression was evaluated by real-time PCR after viperin RNA interference. RESULTS: Viperin was localized in trophoblast cells. Poly (I: C) induced viperin expression in a dosage and time-dependent manner. Blocking of TLR3 signaling by neutralizing antibody against IFN-ß abolished the stimulation of viperin expression. After HCMV infection, expression of viperin mRNA and protein was unregulated. HCMV IE1 mRNA expression was significantly inhibited by viperin RNA interference. DISCUSSION: Viperin is a virus-responsive protein that is constitutively expressed in human trophoblast cells. However, contrary to our hypothesis, viperin facilitates HCMV replication post infection.


Asunto(s)
Placenta/metabolismo , Proteínas/metabolismo , Receptor Toll-Like 3/metabolismo , Trofoblastos/metabolismo , Femenino , Humanos , Interferón beta/genética , Interferón beta/metabolismo , Oxidorreductasas actuantes sobre Donantes de Grupo CH-CH , Placenta/efectos de los fármacos , Poli I-C/farmacología , Embarazo , Primer Trimestre del Embarazo , Proteínas/genética , Interferencia de ARN , ARN Bicatenario , Receptor Toll-Like 3/genética , Trofoblastos/efectos de los fármacos
11.
Endocrinology ; 139(2): 671-6, 1998 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-9449640

RESUMEN

A soluble form of the amino-terminal extracellular (ecto-) domain of the human TSH receptor was generated. This protein was capable of binding TSH and autoimmune antibodies found in Graves' patients. A deletion mutant of the ectodomain lacking nine amino acids in the C-terminal region lost its ability to interact with TSH but retained binding to Graves' IgGs. In cells expressing recombinant TSH receptors, cotreatment with the mutant protein blocked the cAMP production induced by stimulating antibodies from all Graves' patients tested but was without effect on TSH action. The ability to dissociate the actions of TSH and Graves' IgGs provides a tool with which to study the mechanisms underlying Graves' disease and the possibility of neutralizing the undesirable effects of thyroid-stimulating antibodies without altering the normal responses to TSH.


Asunto(s)
Autoanticuerpos/inmunología , Enfermedad de Graves/genética , Enfermedad de Graves/inmunología , Mutación/fisiología , Fragmentos de Péptidos/metabolismo , Receptores de Tirotropina/genética , Tirotropina/inmunología , Línea Celular , AMP Cíclico/biosíntesis , Humanos , Inmunoglobulina G/metabolismo , Fragmentos de Péptidos/genética , Fragmentos de Péptidos/farmacología , Receptores de Tirotropina/química , Solubilidad , Tirotropina/metabolismo , Tirotropina/farmacología
12.
J Clin Endocrinol Metab ; 85(9): 3352-5, 2000 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-10999833

RESUMEN

Angiogenesis is an essential event during the development of the ovarian follicle and ensuing formation of the corpus luteum. We investigated the presence of angiogenin, a potent inducer of angiogenesis, and the regulatory mechanisms of its production in the human ovary. Follicular fluid (FF) and granulosa cells (GCs) were collected from women undergoing in vitro fertilization and embryo transfer. The presence of angiogenin in FF and GCs was demonstrated by Western blot analysis. The production of angiogenin by cultured GCs was stimulated with the addition of human CG or cAMP or under the hypoxic milieu. Concentrations of angiogenin in FF from an individual follicle were positively correlated with those of progesterone, but not estradiol and testosterone. Given the presence of angiogenin in FF and up-regulation of its production by human CG and hypoxia, it seems logical to assume that angiogenin may play a role as a local angiogenic factor in the human ovary.


Asunto(s)
Gonadotropina Coriónica/farmacología , Líquido Folicular/metabolismo , Hipoxia/metabolismo , Ribonucleasa Pancreática/metabolismo , Regulación hacia Arriba/efectos de los fármacos , Adulto , Western Blotting , Bucladesina/farmacología , Células Cultivadas , AMP Cíclico/metabolismo , Femenino , Células de la Granulosa/metabolismo , Hormonas/metabolismo , Humanos , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa
13.
J Clin Endocrinol Metab ; 86(11): 5609-14, 2001 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11701742

RESUMEN

Angiogenesis is thought to be crucial for normal physiology of the endometrium, where dynamic vascular remodeling occurs during the menstrual cycle and pregnancy. We investigated the presence of angiogenin, a potent inducer of angiogenesis, and the regulatory mechanisms of its production in the human endometrium. Western blot analysis demonstrated that angiogenin protein expression increased by 3- to 4-fold in the endometrium in the mid and late secretory phases and in early gestation relative to that during the proliferative phase. Quantitative mRNA analysis showed the similar tendency in the expression of angiogenin mRNA in the endometrium, with the highest levels observed in the mid and late secretory phases and early gestation. An immunohistochemical study showed that angiogenin was expressed in both stromal cells and epithelial cells, with indistinguishable intensity between these cells regardless of phases of the menstrual cycle. In support of the Western blot analysis, the intensity of staining appeared to be highest in the mid to late secretory phases relative to other phases. Consistent with these in vivo results, decidualized cultured stromal cells, after treatment with progesterone or progesterone plus E2, exhibited the capacity to secrete significantly increased amounts of angiogenin compared with untreated or E2 alone-treated control group. Both the treatment with (Bu)2cAMP and hypoxic conditions stimulated angiogenin secretion by stromal cells. For isolated epithelial cells, hypoxia stimulated angiogenin secretion, whereas (Bu)2cAMP had no appreciable effect. In summary, we demonstrated the presence of angiogenin in human endometrium and its possible local regulatory factors, such as progesterone, cAMP, and hypoxia. These findings along with its enhanced expression in the endometrium in the secretory phase and in decidual tissues raise the possibility that angiogenin may play a role in establishing pregnancy.


Asunto(s)
Decidua/metabolismo , Endometrio/metabolismo , Ciclo Menstrual/metabolismo , Ribonucleasa Pancreática/metabolismo , Western Blotting , AMP Cíclico/farmacología , Células Epiteliales/metabolismo , Femenino , Humanos , Hipoxia/metabolismo , Inmunohistoquímica , Técnicas In Vitro , ARN Mensajero/biosíntesis , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Ribonucleasa Pancreática/biosíntesis , Células del Estroma/metabolismo
14.
J Endocrinol ; 165(2): 467-73, 2000 May.
Artículo en Inglés | MEDLINE | ID: mdl-10810310

RESUMEN

The hypoestrogenic state induced by gonadotrophin-releasing hormone agonist (GnRHa) has been shown to be effective in the treatment of oestrogen-dependent disorders but to induce bone loss. Adding back low doses of oestrogen in GnRHa therapy has been proposed to prevent bone loss. The purpose of this study is to assess the efficacy of add-back therapy with different natural oestrogens such as oestrone (OE(1)), oestradiol (OE(2)) and oestriol (OE(3)). Three-month-old female rats (250 g) were subcutaneously administered microcapsules of leuprorelin acetate in doses of 1 mg/kg of body weight every 4 weeks. GnRHa therapy lasted 16 weeks, and pellets of OE(1), OE(2) or OE(3) (0.5 mg/pellet, 60 day release), as an add-back agent, were implanted at 8 weeks of treatment. At the end of treatment, GnRHa alone decreased bone mineral density of the femur and lumbar vertebrae, and increased serum levels of bone metabolic markers such as alkaline phosphatase and osteocalcin levels. As for cancellous bone histomorphometry, GnRHa decreased bone volume while it increased osteoid volume, osteoid surface, eroded surface, mineral apposition rate and bone formation rate. All the oestrogens tested prevented these changes caused by GnRHa therapy. GnRHa induced a significant increase in body weight and a marked reduction in uterine weight, which was not observed in OE(1) or OE(2) add-back group. Body weight and uterine weight of the OE(3) add-back group were the same as those of the GnRHa group. These findings indicate that GnRHa induces high turnover bone loss which can be prevented by concomitant administration of natural oestrogens such as OE(1), OE(2) and OE(3) to the same extent. In addition, OE(3) is unique in that it is much less effective than OE(1) and OE(2) in blocking body weight gain and in promoting growth of uterine tissues. Because of its tissue-selective actions, OE(3) could be considered as one of the most appropriate oestrogens used for GnRHa add-back therapy.


Asunto(s)
Remodelación Ósea/efectos de los fármacos , Huesos/metabolismo , Estrógenos/uso terapéutico , Hormona Liberadora de Gonadotropina/análogos & derivados , Fosfatasa Alcalina/sangre , Animales , Biomarcadores/sangre , Densidad Ósea/efectos de los fármacos , Estradiol/uso terapéutico , Estriol/uso terapéutico , Estrona/uso terapéutico , Femenino , Fémur , Leuprolida/farmacología , Osteocalcina/sangre , Ratas , Ratas Sprague-Dawley , Columna Vertebral
15.
Placenta ; 25(2-3): 153-65, 2004.
Artículo en Inglés | MEDLINE | ID: mdl-14972448

RESUMEN

Cytotrophoblast (CT) differentiation into the extra-villous phenotype is a crucial process in initiating their invasion into the decidua and thereby developing the placenta. However, how CTs differentiate into extra-villous CTs (EVCTs) is not fully elucidated. To address this, a suitable culture model for CTs has been long-sought. But this has been hampered by annoying problems such as; cell aggregation, in vitro syncytialization, low plating efficiency, etc. The aim of this study is to develop a culture system in which CTs differentiate into EVCTs. CTs were isolated from the first trimester placenta using density gradient separation and immuno-depletion using anti-CD9 antibody to remove contaminating fibroblasts and EVCTs. The resultant isolated CTs were found to have the character similar to poorly differentiated CTs comprising proximal cytotrophoblastic cell columns as confirmed by immunocytochemical and flowcytometric analyses. When cultured on type 4 collagen-coated plates in culture media containing low calcium concentration, CTs neither aggregated nor syncytialized, remaining mononuclear and monolayer state. Interestingly, cultured CTs gradually upregulated integrin alpha1, CD9, and human leukocyte antigen (HLA)-G; the known markers specific for EVCTs invading into the decidua diffusely. Hence, the CT culture system provides a sophisticated experimental model in which highly purified CTs acquire the extra-villous phenotype without syncytialization.


Asunto(s)
Técnicas de Cultivo de Célula/métodos , Diferenciación Celular , Corion/citología , Trofoblastos/citología , Adulto , Antígenos CD/metabolismo , Separación Celular , Células Cultivadas , Femenino , Antígenos HLA/metabolismo , Antígenos HLA-G , Antígenos de Histocompatibilidad Clase I/metabolismo , Humanos , Inmunohistoquímica , Integrina alfa1/metabolismo , Glicoproteínas de Membrana/metabolismo , Modelos Biológicos , Fenotipo , Embarazo , Primer Trimestre del Embarazo , Tetraspanina 29 , Trofoblastos/metabolismo , Regulación hacia Arriba
16.
Reprod Toxicol ; 15(1): 71-4, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11137380

RESUMEN

Prenatal exposure to bisphenol A (BPA), an estrogenic compound, has been shown to alter postnatal development at an environmentally relevant exposure level. To elucidate these low dose effects of preimplatation exposure to BPA, two-cell mouse embryos were cultured with 1 nM BPA. More embryos exposed to 1 nM BPA than controls reached the blastocyst stage. When the blastocysts with or without BPA exposure were transferred to uterine horns of pseudopregnant recipient mice not treated with BPA, the number of pups per litter and body weight at birth did not differ. At weaning on postnatal day 21, however, pups treated with 1 nM BPA during the preimplantation period were significantly heavier than controls. These findings suggest that BPA may not only affect early embryonic development even at low, environmentally relevant doses, but also may exert late effects on postnatal development.


Asunto(s)
Blastocisto/efectos de los fármacos , Estrógenos no Esteroides/toxicidad , Crecimiento/efectos de los fármacos , Fenoles/toxicidad , Animales , Compuestos de Bencidrilo , Femenino , Masculino , Ratones , Ratones Endogámicos ICR , Embarazo
17.
Surg Endosc ; 15(8): 898, 2001 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-11443433

RESUMEN

Life-threatening intractable uterine bleeding is difficult to treat when concurrent medical complications contraindicate invasive surgery. We present a case of heavy uterine bleeding in a postmenopausal woman that was complicated by liver cirrhosis and morbid obesity. The bleeding was successfully halted through emergency endometrial ablation after failure of uterine artery embolization.


Asunto(s)
Electrocoagulación/métodos , Endometrio/cirugía , Hemorragia Uterina/cirugía , Urgencias Médicas , Femenino , Humanos , Histeroscopía , Cirrosis Hepática/complicaciones , Persona de Mediana Edad , Obesidad Mórbida/complicaciones , Hemorragia Uterina/etiología
18.
Surg Endosc ; 18(5): 847-51, 2004 May.
Artículo en Inglés | MEDLINE | ID: mdl-15054653

RESUMEN

BACKGROUND: Although the advantages of epidural anesthesia in open surgery have been established, its usefulness in the setting of laparoscopic surgery remains to be studied. METHODS: Patients undergoing laparoscopic surgery for infertility were randomly administered epidural anesthesia (group A, n = 11) or general anesthesia (group B, n = 9). The operation was performed under 4 mmHg pneumoperitoneum and in the 20 degrees Trendelenburg position. Respiratory function tests using a spirometer and blood gas analysis were performed during the intra- or perioperative period. Pain status was evaluated with visual analog scale scoring. The number of postoperative recovery days needed to resume daily activities was obtained by a questionnaire. RESULTS: Respiratory rate, minute volume, P(a)CO2, % vital capacity (VC), and forced expiratory volume in 1 s (FEV1) % were virtually constant throughout the study period in group A, whereas %VC was decreased immediately after operation in group B (p < 0.05). Minute volume immediately after operation was significantly increased in group B compared with group A (p < 0.01), suggesting shallow respiration in women undergoing general anesthesia. Observed pain scores on abdominal pain, shoulder pain, and dyspnea were very low during operation in group A. Pain scores immediately and 3 h after operation were also minimal in group A, whereas abdominal pain scores at these points were significantly higher in group B than those in group A (both p < 0.01). The number of days required for a half reduction in wound pain, trotting, and full recuperation for group A were less than those for group B (p < 0.05). CONCLUSIONS: Epidural anesthesia, when used in laparoscopic surgery for infertility treatment, has advantages over general anesthesia in terms of analgesic effects, postoperative respiratory function, and a return to preoperative daily activities.


Asunto(s)
Analgesia Epidural , Anestesia General , Procedimientos Quirúrgicos Ginecológicos/métodos , Infertilidad Femenina/cirugía , Laparoscopía , Adulto , Femenino , Humanos , Dimensión del Dolor , Neumoperitoneo Artificial , Pruebas de Función Respiratoria
19.
J Reprod Med ; 45(2): 89-93, 2000 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-10710736

RESUMEN

OBJECTIVE: To examine how preexisting tubal adhesions and endometriosis affect pregnancy outcome after laparoscopic treatment in infertile women with no apparent causes of infertility other than tubal factors. STUDY DESIGN: Pregnancy outcomes in 186 infertile women for a follow-up period of 18 months after laparoscopy were analyzed. Laparoscopic manipulations consisted of adhesiolysis of tubes and removal of endometriotic lesions. RESULTS: The patients were classified into three groups, those with no tubal adhesions (group A, n = 83), unilateral tubal adhesions (group B, n = 46) and bilateral tubal adhesions with at least one tube patent (group C, n = 57). The cumulative pregnancy rate in group C (13.2%) was lower than in groups A (41.8%) and B (45.7%) 18 months after laparoscopy. The average time to conception in group A (6.7 +/- 0.8 months) tended to be shorter than that in group B (10.6 +/- 1.2 months). In group A, pregnancy rates were essentially the same between minimal/mild endometriosis and moderate/severe endometriosis. Regarding group B, women with minimal/mild endometriosis exhibited significantly higher pregnancy rates than those with moderate/severe endometriosis, while pregnancy rates in women without endometriosis fell in between. CONCLUSION: Pregnancy rates after laparoscopic treatment are different in relation to tubal status and the presence of endometriosis.


Asunto(s)
Endometriosis/complicaciones , Enfermedades de las Trompas Uterinas/cirugía , Infertilidad Femenina/cirugía , Laparoscopía , Adulto , Trompas Uterinas/patología , Femenino , Estudios de Seguimiento , Humanos , Embarazo , Índice de Embarazo , Pronóstico , Adherencias Tisulares/complicaciones
20.
Rinsho Ketsueki ; 30(3): 387-91, 1989 Mar.
Artículo en Japonés | MEDLINE | ID: mdl-2671436

RESUMEN

An 11-year-old girl with CML in chronic phase was treated with allogeneic bone marrow transplantation (BMT). She had had no episode of heart disease, and her chest roentgenogram and electrocardiogram were within normal ranges. She had no anthracycline, but 120 mg/kg (2.01 g/m2/d x 2 days) of cyclophosphamide (CY) for conditioning of BMT. She suffered from an acute heart failure on 14 days after BMT and died 2 days later. Autopsy revealed "specific heart muscular disease" with apparent degeneration and necrosis of heart muscle cells. More than 30 fatal cases of CY cardiotoxicity after BMT have been reported, and most patients developed acute heart failure within 10 days after CY dosing. Goldberg et al. reviewed 14 cases of CY cardiotoxicity, and considered more than 1.55 g/m2/day to be the critical doses for the onset of fatal cardiomyopathy. This case was considered to be first case in Japan. CY cardiomyopathy is an early fatal complication of BMT when CY used for conditioning. The dosing schedule may be considered.


Asunto(s)
Trasplante de Médula Ósea , Cardiomiopatías/inducido químicamente , Ciclofosfamida/efectos adversos , Leucemia Mielógena Crónica BCR-ABL Positiva/terapia , Niño , Femenino , Humanos
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