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2.
Zentralbl Gynakol ; 123(10): 599-603, 2001 Oct.
Artículo en Alemán | MEDLINE | ID: mdl-11753818

RESUMEN

Chronic abdominal pains caused by peritoneal tuberculosis - two case reports. The diagnosis of a peritoneal tuberculosis could be a demanding task for even an experienced Physician, because of the unspecific symptoms. We report on two patients, who as a result of therapy refractory chronic abdominal pains, weight loss and ascites were admitted to our hospital. The excisional biopsy taken from the peritoneum and the omentum major during an exploratory laparotomy resulted in the histopathologic diagnosis of peritoneal tuberculosis being made. Both patients were given tuberculostatic therapy with isoniazid, rifampicin, pyracinamide and streptomycin and both have since recovered. The symptoms, the difficulties encountered in making the diagnosis and the therapy of the peritoneal tuberculosis are discussed using these two case reports.


Asunto(s)
Dolor Pélvico/etiología , Peritonitis Tuberculosa/diagnóstico , Adulto , Antituberculosos/uso terapéutico , Biopsia , Terapia Combinada , Diagnóstico Diferencial , Quimioterapia Combinada , Femenino , Humanos , Laparoscopía , Epiplón/patología , Dolor Pélvico/diagnóstico por imagen , Dolor Pélvico/cirugía , Peritoneo/patología , Peritonitis Tuberculosa/patología , Peritonitis Tuberculosa/cirugía , Ultrasonografía
3.
Zentralbl Gynakol ; 123(9): 536-42, 2001 Sep.
Artículo en Alemán | MEDLINE | ID: mdl-11709748

RESUMEN

We report on a 24 years old patient with an acute abdominal pain and an unknown intact tubal pregnancy in the 8th gestation week. The sonographic examination confirmed an intact tubal pregnancy. Shortly after the diagnosis, it ruptured with a massive intraabdominal bleeding. Thereafter, the patient collapsed. We carried out a laparoscopy and performed salpingotomy. Because of the persistent bleeding a salpingectomy was performed. We also report on a second patient 34 years old, who was referred to our Department on suspicion of a ruptured ectopic pregnancy with acute abdominal pains and a positive pregnancy test. The transvaginal sonography revealed massive intraabdominal fluid, adnexal tumor and endometriumhyperplasia without a sign of a gestational sac or an embryo.We carried out a laparoscopy, which revealed a ruptured tubal pregnancy with a life, fetus lying in the abdominal cavity. As a result of the massive and persistent intraabdominal bleeding, we carried out laparotomy and performed salpingectomy. Using these two case reports, the etiology, symptoms, clinical course, diagnosis, as well as surgical and drug therapy are discussed.


Asunto(s)
Embrión de Mamíferos/diagnóstico por imagen , Embarazo Tubario/diagnóstico , Dolor Abdominal/diagnóstico por imagen , Adulto , Femenino , Humanos , Laparoscopía , Embarazo , Pruebas de Embarazo , Primer Trimestre del Embarazo , Embarazo Tubario/diagnóstico por imagen , Embarazo Tubario/patología , Embarazo Tubario/cirugía , Rotura Espontánea , Salpingostomía , Resultado del Tratamiento , Ultrasonografía Prenatal
4.
Gynecol Obstet Invest ; 51(4): 233-9, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11408733

RESUMEN

We analyzed tumor tissues from 14 patients with invasive squamous cell carcinoma of the cervix for aberrations of chromosome 17 and p53 expression. All but 3 patients were negative for p53 protein expression, the protein being detected in 2 International Federation of Obstetrics and Gynecology stage IIa cancers and 1 stage Ib G3 carcinoma. Significant cytogenetic aberrations in the form of losses and gains of chromosome 17 were diagnosed in 9 and 7 patients, respectively. There was no correlation with tumor prognosis, clinical stage or histologic grade. According to most reports, almost all cervical carcinomas contain integrated human papilloma virus (HPV) and express E6 oncoproteins. Increasing evidence suggests that E6 protein interaction leads to p53 mutation in HPV-infected cervical epithelium. Since most cervical tumors are infected with HPV, and the tumors originate through p53 gene mutation caused by the said interaction, which leads subsequently to the overexpression of p53 oncoprotein, lack of the latter in the remaining 11 cervical tumors may either be the result of technical shortcomings, or the tumor may arise in such circumstances through a p53-independent pathway. On the other hand, 2 of 3 stage IIa cancers and 1 Ib G3 carcinoma were found to be p53 positive, thus supporting the notion that p53 inactivation is a relatively late event in the progression of cervical cancer.


Asunto(s)
Carcinoma de Células Escamosas/patología , Aberraciones Cromosómicas , Cromosomas Humanos Par 17 , Expresión Génica , Genes p53/genética , Neoplasias del Cuello Uterino/patología , Carcinoma de Células Escamosas/genética , Femenino , Humanos , Hibridación Fluorescente in Situ , Invasividad Neoplásica , Estadificación de Neoplasias , Pronóstico , Neoplasias del Cuello Uterino/genética
5.
Hum Pathol ; 32(5): 559-62, 2001 May.
Artículo en Inglés | MEDLINE | ID: mdl-11381376

RESUMEN

Sertoli-Leydig cell tumors (SLCTs) represent a rare group of sex-cord stromal tumors of the ovary of unknown pathogenesis. We report a SLCT of intermediate differentiation with peritoneal recurrence and lymph node metastasis 12 months after removal, including cytogenetic analysis by comparative genomic hybridization and fluorescence in situ hybridization, which showed trisomy 8 as sole unbalanced karyotypic aberration. Our results provide evidence that a simple numeric chromosomal abnormality in SLCT may be associated with a malignant phenotype and suggest that the molecular pathogenesis of SLCT may be different from ovarian granulosa-stromal cell tumors.


Asunto(s)
Cromosomas Humanos Par 8 , Metástasis de la Neoplasia/genética , Neoplasias Ováricas/genética , Tumor de Células de Sertoli-Leydig/genética , Trisomía , Adolescente , Resultado Fatal , Femenino , Humanos , Hibridación Fluorescente in Situ , Cariotipificación , Metástasis Linfática , Recurrencia Local de Neoplasia , Hibridación de Ácido Nucleico , Neoplasias Ováricas/patología , Neoplasias Ováricas/cirugía , Peritoneo/patología , Tumor de Células de Sertoli-Leydig/patología , Tumor de Células de Sertoli-Leydig/cirugía
6.
Clin Appl Thromb Hemost ; 7(1): 29-32, 2001 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-11190901

RESUMEN

Preeclampsia is associated with an increased platelet activation; however, there are few studies concerning platelet activation of the newborn. The aim of our study was to compare platelet activation in newborns of preeclamptic mothers to newborns of healthy mothers by using whole blood flow cytometry. Blood samples were obtained from 20 newborns (10 healthy controls, 10 cases of preeclampsia/HELLP [hemolysis, elevated liver enzymes, and low platelet count] syndrome) during cesarean section. Antibodies against the following antigens were used as markers for platelet activation: CD 41, CD62P, CD 63, and platelet-bound fibrinogen. In addition to the basal platelet activation, the ability of platelets to undergo activation as a result of in vitro incubation with a weak agonist (adenosine diphosphate) was evaluated. A significant difference between the groups concerning basal platelet activation could only be seen for platelet-bound fibrinogen; the control group showed a higher extent of platelet activation (16.6 +/- 11.3 vs. 6.1 +/- 4.9; p = 0.03). Incubation with adenosine diphosphate in the control group resulted in minor increases of platelet activation, which was significant only for platelet-bound fibrinogen (16.6 +/- 11.3 vs. 42.5 +/- 22.1; p = 0.02). However, the preeclamptic group showed significantly increased levels of platelet activation for all used markers after in vitro activation (CD 41: 115.6 +/- 18.2 vs. 163.2 +/- 29.6; p = 0.002; CD62P: 2.4 +/- 0.4 vs. 3.9 +/- 0.3; p < 0.001; CD 63: 2.7 +/- 0.5 vs. 3.7 +/- 0.6; p = 0.002; platelet-bound fibrinogen: 6.1 +/- 4.9 vs. 55.1 +/- 9.1; p < 0.001). Preeclampsia or HELLP syndrome is therefore associated with an increased susceptibility to neonatal platelets, even against weak activators such as adenosine diphosphate. Whether this results from peculiarities in the fetal vascular environment or maternal influences is yet uncertain.


Asunto(s)
Recién Nacido/sangre , Activación Plaquetaria , Preeclampsia/sangre , Adenosina Difosfato/farmacología , Antígenos CD/sangre , Biomarcadores/sangre , Femenino , Fibrinógeno/metabolismo , Citometría de Flujo , Síndrome HELLP/sangre , Síndrome HELLP/etiología , Humanos , Masculino , Activación Plaquetaria/efectos de los fármacos , Activación Plaquetaria/fisiología , Preeclampsia/etiología , Embarazo
7.
J Pathol ; 193(1): 40-7, 2001 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-11169514

RESUMEN

Infiltrating ductal (DC) and lobular carcinoma (LC) of the breast represent the most frequently observed varieties of invasive breast cancer, characterized by differences in their histological and clinical properties. Although comparative genomic hybridization (CGH) of invasive breast carcinomas has revealed a complex and consistent pattern of DNA copy number changes, the data with regard to type specific aberrations are limited. A comprehensive study was therefore performed on 19 LCs and 29 DCs to ascertain type-specific differences of unbalanced DNA copy number changes by CGH. Statistical analysis revealed significantly higher frequencies for underrepresentation of chromosomes 16q (p<0.01), 22 (p<0.05), and 17q (p<0.05), and a lower frequency for overrepresentation of chromosome 8q (p<0.01) in LC. Similar frequencies of non-random chromosomal changes in LC and DC were obtained for gain of 1q (74%/59%) and loss of 19p (53%/52%), parts of 1p (42%/41%) and 11q (21%/24%). Less frequently, gains mainly involving parts of chromosomes 20q, 20p, 3q, and 5p and partial losses of chromosomes 17p and 13 were observed in both groups of tumours. Minimal regions of overlapping amplifications were mapped to 17q23 exclusively in DC (17%) and 11q13-q14 in both DC and LC (21% and 11%, respectively). High occurrences of DNA copy number decreases were detected at the distal part of chromosomes 1p, 19 and 22, but further analysis is required to confirm these imbalances. It is suggested that the observed differences are involved in the development of type-specific properties of DC and LC.


Asunto(s)
Neoplasias de la Mama/genética , Carcinoma Ductal de Mama/genética , Carcinoma Lobular/genética , Aberraciones Cromosómicas , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/patología , Carcinoma Ductal de Mama/patología , Carcinoma Lobular/patología , ADN de Neoplasias/genética , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador/métodos , Hibridación in Situ , Persona de Mediana Edad , Invasividad Neoplásica
8.
APMIS ; 109(9): 601-6, 2001 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-11878713

RESUMEN

AIMS: Cytogenetic data on solitary fibrous tumours (SFT) are very limited. We studied a benign pleural SFT for its ultrastructural and immunohistochemical details, and made cytogenetic analyses for comparison with other genetic and ultrastructural studies of SFT. RESULTS: Immunohistochemistry showed strong positivities for CD34 and vimentin, but no reactions with anti-cytokeratins and epithelial membrane antigens. Electron microscopy revealed primitive desmosomes in our SFT. The results thus evinced fibroblast-like cells with intermediate epithelial-mesenchymal character. Comparative genomic hybridization of the tumour revealed losses of 1p33-->pter, 17pter q21, entire copies of chromosomes 19 and 22, and gains of 1p21-p22, 2q23-q32.3, 3pl2-q13.2, 4p14-q28, 6p12-q21, 9p21-->pter and 13q21-q31. Furthermore, there was loss of 20q, as was previously reported elsewhere in a case of benign and a case of malignant SFT. CONCLUSIONS: The results furnish further evidence of the involvement of -20q in SFT. In addition, they show that SFT may have complex genomic imbalances and primitive features, despite having a benign appearance.


Asunto(s)
Deleción Cromosómica , Cromosomas Humanos Par 20/genética , Neoplasias de Tejido Fibroso/genética , Neoplasias Pleurales/genética , Desmosomas/ultraestructura , Epitelio , Femenino , Humanos , Cariotipificación , Persona de Mediana Edad , Neoplasias de Tejido Fibroso/patología , Neoplasias Pleurales/patología
9.
J Health Hum Serv Adm ; 24(2): 234-57, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-12638388

RESUMEN

Using the 1998/99 Ghana Demographic and Health Survey dataset, this article examines the behavior of men who think they are at risk for HIV/AIDS and those who indicate they have no AIDS risks. Using a theoretical framework that borrows from rationale choice theory and individual-level characteristics, the article explores the links between AIDS risks status and changes in preventive behavior. The results show high levels of AIDS-related knowledge among men in Ghana. In addition, the majority of the men indicated that they had changed their behavior in response to AIDS although they were more likely to cite the avoidance of multiple partners rather than the use of condoms in their sexual encounters. In the logistic regression models, education, marital status, and religion emerged as important predictors of changes in behavior. The fact that few men used condoms as an HIV/AIDS preventive method raises a number of policy issues, the implications of which are discussed in this article.


Asunto(s)
Infecciones por VIH/prevención & control , Conocimientos, Actitudes y Práctica en Salud , Sexo Seguro/psicología , Síndrome de Inmunodeficiencia Adquirida/etnología , Síndrome de Inmunodeficiencia Adquirida/prevención & control , Síndrome de Inmunodeficiencia Adquirida/psicología , Adolescente , Adulto , Conducta de Elección , Condones/estadística & datos numéricos , Demografía , Ghana/epidemiología , Infecciones por VIH/etnología , Infecciones por VIH/psicología , Encuestas Epidemiológicas , Humanos , Masculino , Hombres/educación , Hombres/psicología , Persona de Mediana Edad , Medición de Riesgo , Factores de Riesgo , Sexo Seguro/etnología
10.
Afr J Reprod Health ; 4(1): 13-27, 2000 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-11000705

RESUMEN

HIV/AIDS in Africa is transmitted primarily through heterosexual contact. This mode of disease transmission places sexually active childbearing women at high risk of contracting the disease. In this study, data from the 1993/94 Ghana Demographic Health Survey were used to explore the relationship between AIDS-related knowledge and family planning practices, specifically the use of contraceptives and condoms. While the study finds high levels of AIDS-related knowledge among Ghanaian women, this knowledge is yet to translate into increased condom use. It is suggested that the use of rational choice models in AIDS prevention programs may not be adequate to change people's sexual behaviour, especially in societies where the prevailing cultural practices and norms encourage large families and discourage the use of contraceptives of any type. In such settings, there is the need to find appropriate mechanisms that could help increase the use of all types of contraceptives. As contraceptive use increases, it is likely that the use of condoms for AIDS prevention and also for family planning purpose would increase in sub-Saharan Africa.


Asunto(s)
Síndrome de Inmunodeficiencia Adquirida , Actitud Frente a la Salud , Conducta Anticonceptiva/psicología , Conducta Anticonceptiva/estadística & datos numéricos , Servicios de Planificación Familiar/estadística & datos numéricos , Conocimientos, Actitudes y Práctica en Salud , Mujeres/educación , Mujeres/psicología , Síndrome de Inmunodeficiencia Adquirida/prevención & control , Síndrome de Inmunodeficiencia Adquirida/transmisión , Adolescente , Adulto , Actitud Frente a la Salud/etnología , Condones/estadística & datos numéricos , Conducta Anticonceptiva/etnología , Escolaridad , Servicios de Planificación Familiar/métodos , Femenino , Ghana , Humanos , Persona de Mediana Edad , Modelos Psicológicos , Factores de Riesgo , Encuestas y Cuestionarios
11.
Br J Cancer ; 82(8): 1407-14, 2000 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-10780519

RESUMEN

To demonstrate associations of certain chromosomal aberrations with defined renal cell tumour (RCT) subtypes, we analysed 239 tumour nephrectomy cases for specimens with multicentric tumours. Chromosomal in situ hybridization was then performed on 15 cases with 34 foci (16 conventional renal cell carcinomas (RCCs), and 18 papillary RCTs (11 carcinomas and seven adenomas) for specific chromosomal aberrations, using alpha-satellite probes for chromosomes 3, 7 or 17. Particular preference was given to cases which had separate foci with different cytomorphologies. Furthermore, we compared aberrations in relation to tumour size, stage, grade and between different foci in a specimen. Thirty-four cases had multiple tumours. Forty-seven per cent of the multicentric tumours were conventional RCCs and 53% papillary RCTs (against 83% solitary conventional RCCs and 5% solitary papillary RCTs). Three conventional RCCs sized 8 mm (G3), 13 cm (pT2, G2) and 15 cm (pT3b, G3), respectively, revealed monosomy 3, and 13 were disomic. Seventeen papillary RCTs (11 carcinomas and six adenomas) displayed trisomy 17, irrespective of size or grade. Four papillary carcinomas and six papillary adenomas had trisomy 7, and the rest (seven papillary carcinomas and one papillary adenoma) revealed disomy 7. In conclusion, papillary RCTs were tendentially multicentric. Although specific for conventional RCCs heedless of size, monosomy 3 was only observed in high-grade and/or advanced tumours. Trisomy 17 was only detectable in papillary RCTs irrespective of tumour state, showing increased copies with tumour growth. Papillary RCTs also appeared to lose some copies of chromosome 7 with tumour progress, possibly reflecting malignancy.


Asunto(s)
Carcinoma de Células Renales/genética , Carcinoma de Células Renales/patología , Aberraciones Cromosómicas , Cromosomas Humanos Par 17 , Cromosomas Humanos Par 3 , Cromosomas Humanos Par 7 , Neoplasias Renales/genética , Neoplasias Renales/patología , Carcinoma Papilar/genética , Carcinoma Papilar/patología , Carcinoma Papilar/cirugía , Carcinoma de Células Renales/cirugía , Mapeo Cromosómico , Femenino , Humanos , Hibridación in Situ , Interfase , Neoplasias Renales/cirugía , Masculino , Persona de Mediana Edad , Monosomía , Estadificación de Neoplasias , Nefrectomía
12.
Anticancer Drugs ; 11(10): 843-8, 2000 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11142692

RESUMEN

We evaluated the in vitro cytotoxicity of topotecan (TPT), versus cisplatin, etoposide (VP-16) and paclitaxel (PTX) in four squamous cell cancer cell lines of the cervix uteri and vulva. Four established human squamous cancer cell lines from the cervix uteri (A-431, Ca Ski and C-33) and vulva (CAL-39) were used. The cytotoxic effects of the agents were examined using the ATP-Tumor Chemosensitivity Assay (ATP-TCA). In addition to the single agents, the following combinations were tested: TPT+cisplatin, TPT+VP-16 and TPT+PTX. Three cell lines (C-33, Ca Ski and CAL-39) were highly sensitive to TPT, but one cell line (A-431) was less sensitive. Furthermore, the cytotoxic activity of TPT was superior to that of cisplatin in Ca Ski and C-33 cells, but inferior in CAL-39 and A-431. TPT was also more active than VP-16 in CAL-39 and Ca Ski. On the other hand, the cytotoxic activity of TPT was weaker than PTX in C-33, CAL-39 and A-431. TPT increased the cytotoxic activity of cisplatin and VP-16 in C-33, Ca Ski and A-431. However, synergistic features were observed only in A-431 cells. TPT also enhanced the cytotoxic activity of PTX in A-431 and Ca Ski. In CAL-39 and C-33, however, increased cytotoxic activity occurred only at higher drug concentrations, whereas antagonism was observed at lower drug concentrations. In conclusion, our results suggest that TPT has a significant cytotoxic effect on most squamous cell cancer cell lines which may be superior to cisplatin, VP-16 and PTX in some instances. Furthermore, TPT is likely to potentiate the cytotoxic activity of these agents in individual cell lines tested.


Asunto(s)
Antineoplásicos/toxicidad , Protocolos de Quimioterapia Combinada Antineoplásica/toxicidad , Carcinoma de Células Escamosas/tratamiento farmacológico , Topotecan/toxicidad , Neoplasias del Cuello Uterino/tratamiento farmacológico , Neoplasias de la Vulva/tratamiento farmacológico , Adenosina Trifosfato/análisis , Cisplatino/administración & dosificación , Cisplatino/toxicidad , Ensayos de Selección de Medicamentos Antitumorales , Inhibidores Enzimáticos/toxicidad , Etopósido/administración & dosificación , Etopósido/toxicidad , Femenino , Humanos , Mediciones Luminiscentes , Paclitaxel/administración & dosificación , Paclitaxel/toxicidad , Topotecan/administración & dosificación , Células Tumorales Cultivadas
13.
Acta Paediatr ; 88(7): 786-8, 1999 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-10447143

RESUMEN

A 6-y-old girl with right atrial myxoma presented with remittent fever attacks, general arthralgia and laboratory investigations mimicking rheumatic or autoimmune disease. Interleukin-6 (IL-6) serum concentration was markedly elevated before and normal after tumour resection, whereas myxoma cells stained negatively for IL-6. IL-6 should be considered a myxoma marker: overproduction by myxoma cells and consecutive systemic passage are assumed to cause immunological features.


Asunto(s)
Atrios Cardíacos/cirugía , Neoplasias Cardíacas/diagnóstico , Interleucina-6/sangre , Mixoma/diagnóstico , Enfermedades Reumáticas/diagnóstico , Biomarcadores de Tumor/sangre , Niño , Ecocardiografía , Femenino , Neoplasias Cardíacas/cirugía , Humanos , Inmunohistoquímica , Mixoma/cirugía
14.
Histopathology ; 34(2): 163-9, 1999 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-10064396

RESUMEN

AIMS: To resolve the conflicting diagnoses of five pathologists (which included well-differentiated neuroendocrine carcinoma, malignant carcinoid, undifferentiated small-cell carcinoma, primitive neuroectodermal tumour, metastases of small-cell lung carcinoma (SCLC) and Merkel cell carcinoma (MCC)), and tumour-free lungs after necropsy, we investigated an alarmingly metastasizing MCC in a 32-year-old Caucasian man using chromosomal in-situ hybridization (CISH). Differences in incidence and course in males and females also prompted targeted analyses for chromosomes X and Y. The lesion was also analysed for p53 gene mutations. METHODS AND RESULTS: Paraffin sections of the thorax, buccal lymph nodes and scalp tumours were stained with haematoxylin and eosin. Immunohistochemistry was performed with antibodies against pancytokeratin, keratin 20, neuron-specific enolase (NSE), chromogranin, neurofilaments and vimentin, among others. Sections (5-6 microm) of the tumours were analysed with alpha-satellite probes for chromosomes 1, 6, 7, 11, 12, 17, 18, X and Y using CrSH; and exons 5-9 of the p53 gene were examined by polymerase chain reaction and single strand conformation polymorphism (PCR-SSCP) methods. Although positive for pancytokeratin, keratin 20, chromogranin, NSE, synaptophysin and vimentin, the similarity in antigen profiles expressed by SCLC and MCC prevented a definitive tumour diagnosis. Chromosomal in-situ hybridization, however, revealed trisomies 1 and 11, two frequent aberrations in MCC, and trisomy 18. Moreover, 71% of the tumour cells had two to three copies of X, whereas 98% of the cell nuclei in the hair follicles and normal epidermis (purported Merkel cell origins) displayed one X chromosome. No mutations were detected in the five exons of the p53 gene examined. CONCLUSIONS: Had CISH been performed earlier, treatment may have been tailored specifically to suit MCC, since MCC and SCLC have different therapeutic strategies. Finally, chromosome X may be of prognostic relevance in MCC, which apparently predominates in females and yet shows poorer prognosis in males, and hence be worthy of further investigation.


Asunto(s)
Carcinoma de Células de Merkel/genética , Cuero Cabelludo , Neoplasias Cutáneas/genética , Adulto , Carcinoma de Células de Merkel/patología , Cromosomas Humanos , Genes p53/genética , Humanos , Inmunohistoquímica , Hibridación in Situ , Interfase , Masculino , Cromosomas Sexuales , Neoplasias Cutáneas/patología
15.
Histopathology ; 32(5): 436-43, 1998 May.
Artículo en Inglés | MEDLINE | ID: mdl-9639119

RESUMEN

AIMS: To determine by cytogenetic analysis the origins of two clear cell tumours in a 70-year-old Caucasian woman, one in the thyroid gland, and the other in the skin, 16 and 20 years, respectively, after tumour nephrectomy. We sought a conclusive distinction between primary clear cell thyroid carcinoma and its cutaneous metastasis, and between thyroid and cutaneous metastases of clear cell renal carcinoma (RCC). METHODS AND RESULTS: Paraffin sections of the previously formalin-fixed thyroid tumour, and the fresh cutaneous tumour were stained with haematoxylin and eosin (H & E) and periodic acid-Schiff (PAS). Additionally, samples of both tumours were examined electron microscopically. Immunohistochemistry was performed with antibodies against thyroglobulin, pancytokeratin, keratin 7, 8, 18 and 19, chromogranin, calcitonin, CEA, vimentin and EMA. Five to six micrometre sections of both tumours were analysed with alpha-satellite probes of chromosomes 3, 7 and 17 using chromosomal in-situ hybridization (CISH). The cutaneous tumour was also cultured and analysed cytogenetically. The thyroid tumour displayed some follicle-like structures that stained positive with both PAS and antithyroglobulin, giving evidence of possibly entrapped thyroid follicles in metastatic RCC. The cutaneous tumour was negative for both stains. The tumours were ultrastructurally completely devoid of neurosecretory granules. Classical cytogenetical analysis of the cultured cutaneous tumour cells revealed monosomies 3 and 14, well-known specific primary and secondary aberrations, respectively, in clear cell RCC, and hitherto not reported in thyroid carcinomas. CISH of both tumours revealed monosomy 3, indicating a cytogenetical correlation between them. There was no evidence of typical chromosomal aberrations for thyroid carcinomas like structural changes on 10q, structural rearrangements or translocations of chromosome 7. CONCLUSION: Although neither histological sections, nor paraffin blocks of the original nephrectomy specimen were available for review, the original tumour was on record as clear cell RCC. Therefore the two tumours' renal origin was confirmed.


Asunto(s)
Carcinoma de Células Renales/genética , Neoplasias Renales/genética , Neoplasias Cutáneas/genética , Neoplasias de la Tiroides/genética , Anciano , Carcinoma de Células Renales/patología , Carcinoma de Células Renales/ultraestructura , Aberraciones Cromosómicas , Trastornos de los Cromosomas , Diagnóstico Diferencial , Femenino , Humanos , Técnicas para Inmunoenzimas , Hibridación in Situ , Cariotipificación , Neoplasias Renales/patología , Neoplasias Cutáneas/secundario , Neoplasias Cutáneas/ultraestructura , Neoplasias de la Tiroides/secundario , Neoplasias de la Tiroides/ultraestructura
16.
Int J Gynecol Pathol ; 17(2): 106-12, 1998 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-9553805

RESUMEN

The short arm isochromosome of chromosome 12 and trisomy 12 are well-established chromosomal alterations in human ovarian germ cell tumors. However, numerical aberrations of chromosome 12 in epithelial ovarian tumors (EOTs) are highly controversial; both trisomy 12 and monosomy 12 have been observed. We performed chromosomal in situ hybridization in paraffin-embedded and formalin-fixed tissue sections of 31 EOTs. Twenty-five EOTs could be evaluated statistically (2 mucinous, 11 serous, 5 endometrioid, 3 borderline, and 4 other epithelial-type tumors) to examine the copy number of chromosome 12 and 15. The frequency distribution of hybridization signals with alpha-satellite centromeric DNA probes for chromosome 15 revealed disomy in all cases. However, we found the loss of chromosome 12 in 16 of 25 tumor samples. No correlation was found between the presence of monosomy 12 and the clinical stage of the tumors. Frequent loss of chromosome 12 may indicate that this chromosome is involved in the tumorigenesis of EOTs. Further studies are needed to clarify whether loss of chromosome 12 is an early or late event in ovarian carcinogenesis.


Asunto(s)
Aberraciones Cromosómicas , Cromosomas Humanos Par 12 , Hibridación in Situ , Neoplasias Ováricas/genética , Carcinoma Endometrioide/genética , Cistoadenoma/genética , Sondas de ADN , Femenino , Humanos
17.
J Biosoc Sci ; 29(1): 33-49, 1997 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-9881118

RESUMEN

Using data from the 1988 Ghana Demographic and Health Survey, this study examines couples' demographic and socioeconomic characteristics in the context of their attitudes towards family planning, and the impact of these factors on the use of contraceptives. The characteristics of the husbands and their influence on wives' behaviour illustrate the role of intra-household relations between men and women and their effect on fertility-related behaviour in patriarchal African societies.


PIP: Compared to elsewhere in the Third World, Africa has one of the lowest contraceptive use rates. Recent studies suggest that gender relations in many parts of the continent may be responsible for such low use of modern contraception. The 1988 Ghana Demographic and Health Survey collected data on background characteristics, contraceptive knowledge and use, attitudes toward family planning, marriage, fertility, and fertility preferences from 4488 reproductive-age women and 1010 of their husbands. Relative to their spouses, men tended to be older, better educated, and more likely working in agriculture. 83% of men and 73% of women indicated their acceptance of mass media family planning messages, while 20% of husbands and 16% of wives reported using some form of contraception. A larger percentage of men and women over age 26 reported using contraception compared to respondents under age 26. The level of contraception use increased with the level of education for both sexes, although the level of use was inversely related to the difference in age between spouses. Periodic abstinence was the most widely used method, followed by oral contraception. Communication between spouses was an important predictor of family planning use.


Asunto(s)
Conducta Anticonceptiva/psicología , Conducta Anticonceptiva/estadística & datos numéricos , Servicios de Planificación Familiar/estadística & datos numéricos , Conocimientos, Actitudes y Práctica en Salud , Esposos/educación , Esposos/psicología , Adulto , Conducta Anticonceptiva/etnología , Femenino , Identidad de Género , Ghana , Humanos , Modelos Logísticos , Masculino , Factores Socioeconómicos , Esposos/etnología , Encuestas y Cuestionarios
18.
J Acquir Immune Defic Syndr Hum Retrovirol ; 13(3): 227-34, 1996 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-8898667

RESUMEN

We evaluated factors associated with low birth weight (LBW) in an HIV-infected cohort (n = 772) and a general sample (n = 2,377) of women delivering a live singleton in federal fiscal years 1989 and 1990 while enrolled in New York State Medicaid. The association of LBW and HIV infection was studied in logistic models, controlling for illicit drug use, demographic characteristics, adequacy of prenatal care, and medical risk factors. Overall, 29% of the HIV-infected women had a LBW infant compared to 9.3% of the general sample (p < 0.001). The adjusted odds of LBW for HIV-infected women were twofold higher than for uninfected women [odds ratio (OR) = 2.04 and 95% confidence interval (Cl) = 1.54, 2.69]. Odds of LBW were also increased for illicit drug users (OR = 2.16; 95% CI = 1.59, 2.94), cigarette smokers (OR = 1.81; 95% CI = 1.37, 2.39), and African-American versus non-Hispanic white women (OR = 1.89; 95% CI = 1.31, 2.72). Lower odds appeared for women with adequate prenatal care (OR = 0.54; 95% CI = 0.42, 0.68). Among only women with full-term deliveries, the association of HIV with LBW remained strong as we found nearly threefold greater odds of LBW for HIV-infected women. This study indicates that HIV-infected women have an increased risk of bearing a L.BW infant, even after adjusting for the effects of drug use, health care delivery, and other social and medical risk factors.


Asunto(s)
Infecciones por VIH/complicaciones , Recién Nacido de Bajo Peso , Complicaciones Infecciosas del Embarazo/virología , Adolescente , Adulto , Femenino , Infecciones por VIH/etnología , Humanos , Recién Nacido , Persona de Mediana Edad , Oportunidad Relativa , Embarazo , Complicaciones Infecciosas del Embarazo/etnología , Atención Prenatal , Factores de Riesgo , Fumar/efectos adversos , Trastornos Relacionados con Sustancias/complicaciones
19.
Hum Biol ; 63(3): 389-402, 1991 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-2055593

RESUMEN

This study utilizes data from the Ghana Fertility Survey (GFS) (1979-1980) to investigate breast feeding in Ghana and the factors that affect it. Using life table procedures, we found evidence that, when other factors are held constant, older cohorts, women with no schooling, those who work in the agricultural sector, those affiliated with traditional Ghanaian religions, Mole-Dagbanis, rural residents, residents of the Volta, Brong-Ahafo, northern, and upper regions, and low-parity women show longer durations of breast feeding. It is recommended that, along with other fertility reduction measures, prolonged breast feeding among all Ghanaian mothers should be encouraged to help reduce conception and to ensure healthy children.


PIP: Data from the Ghana Fertility Survey (GFS), 1978-80, is used to investigate the fertility levels and breast feeding behavior in Ghana. The stratified sample of 6125 women aged 15-49 years represents region and urban, large urban and rural sectors, of which a subsample of 4943 ever married women provides data of the last births within the preceding 5 years. Analysis is based on survival table procedures and accelerated failure time models to estimate the probability of breast feeding at various ages. The Weibull regression version of general accelerated failure time models was employed in estimating the effects of the independent variables on the median duration of breast feeding for selected maternal characteristics. The SAS statistical procedure, LIFEREG, was used to estimate maximum likelihood parameters with a Newton-Raphson algorithm. The dependent variable was the cumulative probability of breast feeding for children who were still breast feeding, those discontinuing, and those breast fed until their death. Independent variables were birth cohort (1930-39, 1940-49, 1950-54, and 1955-64), age at first marriage, formal education, occupation, religion, ethnicity, monogamous or polygynous marriage, residence, ratio of desired children to living ones, and parity. The results show that the median duration exceeds 12 months which is strongly related to birth cohort, .01 level of significance. Duration decreases over time. The youngest age cohort may perceive their breasts to be sex symbols and infant feeding formulas have become more available. Age at first marriage has little effect on duration, but increasing age at marriage shows a slight reduction in duration with controls operating. Babies are breast fed longer by less educated mothers, although the multivariate analysis indicated insignificance. Working mothers may have a conflict with breast feeding, but professional women have about the same duration as other women, perhaps due to the 3-month paid maternity leave. Agricultural workers tend to breast feed longer. Only traditional believers breast feed longer, longer by Christians by 4 months and by Muslims 2 months. Only the Mole-Dagbanis breast fed over 1.5 years. Women in polygynous marriages also breast feed longer. Urban women tended to have shorter durations, .05 significance level. Regional differences varied between 14-19 months. Women from Brong-Ahafo and Volta regions may breast feed longer because of inadequate health services. Greater parity is associated with shorter duration. The recommendation is that contraceptives be associated with shorter duration. The recommendation is that contraceptives be made more widely available because of the trend in shorter feeding and concomitantly shorter birth intervals, and that breast feeding be promoted.


Asunto(s)
Lactancia Materna , Tablas de Vida , Imagen Corporal , Escolaridad , Etnicidad , Femenino , Fertilidad , Ghana , Humanos , Edad Materna , Ocupaciones , Paridad , Religión , Características de la Residencia , Factores de Tiempo
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