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1.
J Clin Oncol ; 20(1): 205-13, 2002 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-11773171

RESUMO

PURPOSE: We conducted a retrospective analysis to evaluate the safety and efficacy of Campath-1H, an anti-CD52 humanized monoclonal antibody, in previously treated T-prolymphocytic leukemia (T-PLL) patients in a compassionate-use program. PATIENTS AND METHODS: Seventy-six patients with T-PLL (including four chemotherapy-naive patients) received 3, 10, and 30 mg of Campath-1H on sequential days, followed by 30 mg three times weekly, as 2-hour intravenous infusions, for 4 to 12 weeks. RESULTS: Median patient age was 60 years (range, 35 to 84). Spleen liver, lymph node, and skin involvement were present in 64%, 40%, 54%, and 18% of patients, respectively. All tested patients had CD2, CD7, CD4, and/or CD8 positivity, whereas CD5 and CD3 were positive in 98% and 96% of tested patients, respectively. The objective response rate was 51% (95% confidence interval [CI], 40% to 63%), with a 39.5% complete response (CR) rate (95% CI, 28% to 51%). The median duration of CR was 8.7 months (range, 0.13+ to 44.4), and median time to progression was 4.5 months (range, 0.1 to 45.4) compared with 2.3 months (range, 0.2 to 28.1) after first-line chemotherapy. The median overall survival was 7.5 months (14.8 months for CR patients). The most common Campath-1H-related adverse events were acute reactions during or immediately after infusions. Fifteen infectious episodes occurred during treatment in 10 patients (13%), leading to treatment discontinuation in three. Eight patients experienced possibly related, late-onset infections. Severe thrombocytopenia and/or neutropenia occurred in six patients (8%), leading to treatment discontinuation in four. Two treatment-related deaths occurred. CONCLUSION: Campath-1H is an active drug in T-PLL patients for whom first-line therapy has failed. It has a favorable risk/benefit ratio and should be prospectively investigated in chemotherapy-naive patients.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Anticorpos Antineoplásicos/uso terapêutico , Antineoplásicos/uso terapêutico , Leucemia de Células T/tratamento farmacológico , Terapia de Salvação/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Alemtuzumab , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais Humanizados , Anticorpos Antineoplásicos/efeitos adversos , Antineoplásicos/efeitos adversos , Qualidade de Produtos para o Consumidor , Feminino , Doenças Hematológicas/induzido quimicamente , Doenças Hematológicas/epidemiologia , Humanos , Infusões Intravenosas , Leucemia de Células T/mortalidade , Masculino , Pessoa de Meia-Idade , Infecções Oportunistas/induzido quimicamente , Infecções Oportunistas/epidemiologia , Estudos Retrospectivos , Taxa de Sobrevida , Fatores de Tempo
2.
Leukemia ; 10(2): 346-50, 1996 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-8637246

RESUMO

Little is known about the clinical significance of secondary chromosome aberrations in lymphomas with t(11;14)(q13;q32), the characteristic change of mantle cell lymphomas. Here we present a patient with mantle cell lymphoma, who showed a variant Burkitt's translocation t(2;8)(p12;q24) in addition to t(11;14) during the progression of the disease. An involvement of chromosome 8q24, the localization of the c-myc gene, has so far been described in only four patients, who seemed to have a fatal clinical course. Although no blastic transformation occurred in our patient, no remission could be induce by intensified treatment and survival was only 5 months. This case demonstrates that secondary chromosome aberrations can determine the clinical course of patients, even if morphologic and immunophenotypic findings fail to predict the poor outcome.


Assuntos
Linfoma de Burkitt/genética , Cromossomos Humanos Par 11 , Cromossomos Humanos Par 14 , Linfoma não Hodgkin/genética , Translocação Genética , Southern Blotting , Cromossomos Humanos Par 2 , Cromossomos Humanos Par 8 , Humanos , Hibridização In Situ , Cariotipagem , Linfoma não Hodgkin/patologia , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Prognóstico
3.
Science ; 232(4757): 1560, 1986 Jun 20.
Artigo em Inglês | MEDLINE | ID: mdl-17773509
4.
Science ; 214(4521): 688-9, 1981 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-17839662
5.
Urology ; 48(1): 135-8, 1996 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-8693637

RESUMO

A case of an atypical renal milk-of-calcium cyst is presented. Although this cyst contained a colloidal suspension of calcium crystals, other signs and findings typical for a milk-of-calcium cyst were lacking. No connection of the cyst to the collecting system could be identified, no "half moon" phenomenon was found on upright and cross-sectional radiography, and the biopsies taken from the wall of the cyst showed sclerosis instead of urothelium. From the present case it was concluded that renal milk-of-calcium cysts may sometimes occur in the absence of findings that are typical of this particular entity. Therefore, this disease should be considered in the differential diagnosis of renal calcifications of unknown origin.


Assuntos
Doenças Renais Císticas/diagnóstico por imagem , Adulto , Feminino , Humanos , Radiografia
6.
Hematol Oncol Clin North Am ; 14(6): 1307-25, ix, 2000 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11147225

RESUMO

The German Multicenter Study Group for Adult Acute Lymphoblastic leukemia (GMALL) has conducted 5 consecutive trials with more than 3000 patients since 1981. This article provides an overview on aims, treatment concepts, and results of these studies. It includes brief summaries on the development of prognostic models within the GMALL group and on approaches for prophylaxis of CNS relapse, and it summarizes specific treatment concepts for mature B-lineage acute lymphocytic leukemia.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Adolescente , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/classificação , Transplante de Medula Óssea , Neoplasias do Sistema Nervoso Central/prevenção & controle , Ensaios Clínicos como Assunto , Terapia Combinada , Irradiação Craniana , Alemanha/epidemiologia , Humanos , Imunofenotipagem , Injeções Espinhais , Linfoma de Células B/tratamento farmacológico , Linfoma não Hodgkin/tratamento farmacológico , Metotrexato/administração & dosagem , Pessoa de Meia-Idade , Modelos Teóricos , Estudos Multicêntricos como Assunto , Projetos Piloto , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras/mortalidade , Leucemia-Linfoma Linfoblástico de Células Precursoras/patologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/radioterapia , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Prognóstico , Estudos Prospectivos , Ensaios Clínicos Controlados Aleatórios como Assunto , Indução de Remissão , Risco , Taxa de Sobrevida , Transplante Autólogo , Transplante Homólogo , Resultado do Tratamento
7.
Thromb Res ; 51(5): 543-55, 1988 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-3140411

RESUMO

The activation of fibrinolysis during bicycle ergometry was studied in two pairs of age-matched groups. Group A: 18 healthy male competitive athletes (23 +/- 3.5 years of age, mean +/- SD), Group B: 18 healthy male volunteers (25.7 +/- 2.7) not engaged in any sports, Group C: 17 healthy male volunteers (50.6 +/- 7.7) regularly practicing sports, and Group D: 18 male survivors from myocardial infarction (MI-patients, 54.2 +/- 7.9) who took part in a rehabilitation sports program. Before ergometry, healthy participants with regular sporting activities showed significantly lower plasma plasminogen activator inhibitor capacities (PAI cap) than the members of the respective age-matched control groups: Group A 13.9 +/- 2.6 AU/ml, Group B 18.5 +/- 5.5, p less than 0.005; Group C 15.2 +/- 2.9, Group D 20.7 +/- 5.5, p less than 0.05. During ergometry the release of tPA antigen did not differ significantly between the age-matched groups, however, tissue plasminogen activator (tPA) activities after ergometry were higher in groups presenting lower pre-test PAI cap values. Group A 5.5 +/- 6.4 AU/ml, Group B 1.1 +/- 2.9 AU/ml, p less than 0.05; Group C 2.9 +/- 3.3, Group D 0.2 +/- 0.7, p less than 0.05. Levels of the fibrin split product (D-dimer) did not change in any of the groups. This investigation indicates that (1) regular vigorous sporting activities enhance blood fibrinolysis by reducing blood PAI cap in healthy individuals, (2) rehabilitation sport is not capable of reducing blood PAI cap in MI-patients to values measured in age matched healthy individuals regularly practicing sports and (3) the activation of fibrinolysis during physical exercise has no systemic fibrinolytic effect.


Assuntos
Fibrinólise , Infarto do Miocárdio/sangue , Esforço Físico , Adulto , Glicoproteínas/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/reabilitação , Inativadores de Plasminogênio , Esportes , Ativador de Plasminogênio Tecidual/sangue
8.
Urologe A ; 32(5): 420-5, 1993 Sep.
Artigo em Alemão | MEDLINE | ID: mdl-8212429

RESUMO

In the absence of firmly established views on the development of nephropathy, we describe in this paper the embryogenetic and clinical aspects of kidney disease. Congenital reductive nephropathy always arises in the ureteral bud and is determined by two factors, endogenous dysplasia and endogenous obstruction. The nine well-known patterns of disease that may result are described herein. The most important starting points are as follows: (a) A dysplastically disorganized and hence refluxive trigone of the bladder induces, via pyramidal-medullary deficiencies, a defect of the metanephros and thus what we term reflux nephropathy (III-V). BU and PN may supervene postnatally. (b) Similarly, obstruction of the ureteral outlet in the first trimester induces dysplastic ascending nephropathy. (c) The same obstruction beginning in the second trimester induces nondysplastic, purely obstructive nephropathy, characterized by glomerular hypogenesis and hemo-obliterative cirrhosis which varies considerably from stage to stage and from case to case and may go as far as complete loss of the parenchyma. (d) Obstruction of the pyeloureteral junction, occurring late in the embryonic phase and originating outside the urinary system, provides the clearest example of fully developed nondysplastic reductive nephropathy. The lesional process may come to a halt at any time. (e) Coincidence of early embryonic dysplastic-refluxive nephropathy and late embryonic infravesical obstruction (with no causal link) accounts for half the morbidity from valvular disease. The other half results from simple nondysplastic obstruction.


Assuntos
Hidronefrose/embriologia , Rim/anormalidades , Ureter/anormalidades , Refluxo Vesicoureteral/embriologia , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Rim/embriologia , Gravidez , Ureter/embriologia , Bexiga Urinária/anormalidades , Bexiga Urinária/embriologia
9.
Urologe A ; 36(4): 343-7, 1997 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-9340901

RESUMO

Twenty-five patients with locally advanced prostate cancer (stage pT3pN0) underwent pelvic lymphadenectomy and radical prostatectomy and were followed up thereafter for at least 15 years. No hormonal treatment was given prior to tumor progression. Overall and disease-free 15-year survival rates were observed to be 44 and 24%, respectively. These data suggest that a cure from prostate cancer by radical prostatectomy can be expected in a quarter of patients with capsular penetration. From our results, no justification can be derived to exclude radical prostatectomy from the spectrum of treatment options for patients with capsular penetration of prostate cancer. More detailed analysis of the results depending on the local extent of the tumor and histological grade revealed distinct differences with respect to the risk of progression. Histological grade was the single most predictive parameter of progression. Out of all subgroups of patients with capsular penetration of prostate cancer, those with a poorly differentiated tumor showed the shortest progression-free interval after surgery, the highest level of overall progression and the largest proportion of tumor-related deaths. By contrast, the prognosis was only slightly influenced by the presence or absence of seminal vesicle involvement. The role of adjuvant treatment after radical prostatectomy for patients with stage pT3pN0 prostate cancer or for subgroups of them remains to be determined within the scope of prospective randomized trials.


Assuntos
Prostatectomia/métodos , Neoplasias da Próstata/cirurgia , Seguimentos , Humanos , Excisão de Linfonodo/métodos , Masculino , Invasividade Neoplásica , Estadiamento de Neoplasias , Prognóstico , Próstata/patologia , Neoplasias da Próstata/mortalidade , Neoplasias da Próstata/patologia , Glândulas Seminais/patologia , Taxa de Sobrevida
10.
Urologe A ; 36(6): 548-51, 1997 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-9487591

RESUMO

The aim of the present study was to investigate the efficacy of surgical excision of metastases in patients with renal cell carcinoma (RCC). Eighteen patients with metastatic RCC underwent resection of metastases between 1988 and 1994 (pulmonary: n = 6; skeletal: n = 6; cerebral: n = 3; local relapse: n = 3). Two patients suffered from synchronous appearance of metastases, whereas in 16 cases a metachronous occurrence was observed. In 12 out of a total of 18 patients metastases were completely resected. These patients survived longer than patients in whom metastases were incompletely resected (30 vs. 12 months). Six out of these 12 patients with a complete resection of metastases are presently free of disease for a mean duration of 24 months (10-34 months). The resection of lung metastases seems to be associated with longer survival times. In conclusion, surgical resection of metastases--solitary or single organ site--especially in the lung appears to be justified in patients with RCC. The surgical excision of skeletal metastases at least improves quality of life.


Assuntos
Neoplasias Ósseas/secundário , Neoplasias Encefálicas/secundário , Carcinoma de Células Renais/secundário , Carcinoma de Células Renais/cirurgia , Neoplasias Renais/patologia , Neoplasias Pulmonares/secundário , Recidiva Local de Neoplasia/cirurgia , Idoso , Neoplasias Ósseas/cirurgia , Neoplasias Encefálicas/cirurgia , Carcinoma de Células Renais/mortalidade , Intervalo Livre de Doença , Seguimentos , Humanos , Neoplasias Renais/mortalidade , Neoplasias Renais/cirurgia , Neoplasias Pulmonares/cirurgia , Pessoa de Meia-Idade , Cuidados Paliativos , Estudos Retrospectivos , Taxa de Sobrevida , Fatores de Tempo
11.
Urologe A ; 38(3): 258-63, 1999 May.
Artigo em Alemão | MEDLINE | ID: mdl-10407985

RESUMO

Colony-stimulating factors (CSF) are frequently used in cases of cytostatic therapy of patients with testicular cancer assuming that they support hematopoietic recovery and, thus, shorten duration of neutropenia as well as reduce infections. Currently, G-CSF and GM-CSF are clinically used. In the present study efficacy and toxicity of these two drugs were investigated and compared in patients with testicular cancer treated by standard chemotherapy. Studying 83 chemotherapy cycles applied to 31 patients with advanced germ cell tumors the effectivity and the side effects of the two CSF were examined by questioning, clinical evaluation, and blood chemistry studies. G-CSF (480 micrograms subcutaneously (s.c.)) were used in 55 and GM-CSF (400 micrograms s.c.) in 28 chemotherapeutic cycles. The indications consisted in the treatment of leukocytopenia on the one hand and in the prophylaxis in subsequent cycles on the other hand. No difference between the two CSF could be found either with regard to postponement of the next cycle (G-CSF: 6.8 vs. GM-CSF: 7.3 days), or to the number of injections per cycle (G-CSF: 8 vs. GM-CSF: 12.5), or to the leukocyte (G-CSF: 2.1 vs. GM-CSF: 1.6 x 10(3)/microliter) or platelet nadir (G-CSF: 0.5 vs. GM-CSF: 0.5 x 10(5)/microliter; mean values of all cycles, respectively). Both CSF did not seem to influence the production of platelets. However, a difference between the two CSF was demonstrated with respect to the toxicity. Frequency (G-CSF: 38.5% vs. GM-CSF: 69.3%) as well as intensity of side effects causing a change of the drug (G-CSF: n = 1 vs. GM-CSF: n = 7) were lower in the case of G-CSF. In conclusion, these data demonstrate no difference was seen between G-CSF and GM-CSF with respect to the efficacy in patients with testicular cancer treated by standard chemotherapy. However, the use of G-CSF seems to be associated with lower toxicity.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Fator Estimulador de Colônias de Granulócitos/administração & dosagem , Fator Estimulador de Colônias de Granulócitos e Macrófagos/administração & dosagem , Leucopenia/induzido quimicamente , Neoplasias Embrionárias de Células Germinativas/tratamento farmacológico , Neoplasias Testiculares/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Bleomicina/administração & dosagem , Bleomicina/efeitos adversos , Cisplatino/administração & dosagem , Cisplatino/efeitos adversos , Relação Dose-Resposta a Droga , Esquema de Medicação , Etoposídeo/administração & dosagem , Etoposídeo/efeitos adversos , Filgrastim , Fator Estimulador de Colônias de Granulócitos/efeitos adversos , Fator Estimulador de Colônias de Granulócitos e Macrófagos/efeitos adversos , Humanos , Contagem de Leucócitos/efeitos dos fármacos , Leucopenia/terapia , Masculino , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/efeitos adversos , Resultado do Tratamento
12.
Urologe A ; 36(1): 45-9, 1997 Jan.
Artigo em Alemão | MEDLINE | ID: mdl-9123681

RESUMO

Interleukin-2 (IL-2) and interferon-alpha (IFN-alpha) were both administered subcutaneously (SC) in combination with intravenously (IV) applied 5-fluorouracil (5-FU) for the treatment of patients with metastasized renal cell carcinoma (RCC). The therapy protocol consisted of a treatment cycle of 8 weeks, which could be carried out in an outpatient regimen. The IFN-alpha was given in each of the 8 weeks (6-9 MU/m2 once to three times weekly SC) combined sequentially with IL-2 (5-20 MU/m2 three times weekly SC for 4 weeks) and 5-FU (750 mg/m2 IV weekly for 4 weeks). Among the 30 consecutive patients treated, in 2 cases a complete, and in 9 cases a partial, remission was achieved in patients with mostly lung and skeletal metastases, with an overall objective response rate of 37%. Mean response duration was 8 months (range 3-18 months). A stable state of the disease lasting 3-18 months was observed in 10 cases. The side effects were only slight and corresponded to toxicity grade I (n = 2), grade II (n = 22) and grade III (n = 6), according to the WHO classification. In conclusion, this triple-drug biochemotherapy demonstrated significant clinical effectiveness comparable with that of an aggressive IL-2 treatment regimen (applied IV), but without its high toxicity.


Assuntos
Antimetabólitos Antineoplásicos/administração & dosagem , Antineoplásicos/administração & dosagem , Carcinoma de Células Renais/terapia , Fluoruracila/administração & dosagem , Interferon-alfa/administração & dosagem , Interleucina-2/administração & dosagem , Neoplasias Renais/terapia , Adulto , Idoso , Antimetabólitos Antineoplásicos/efeitos adversos , Antineoplásicos/efeitos adversos , Carcinoma de Células Renais/patologia , Quimioterapia Adjuvante , Terapia Combinada , Relação Dose-Resposta a Droga , Esquema de Medicação , Feminino , Fluoruracila/efeitos adversos , Seguimentos , Humanos , Infusões Intravenosas , Injeções Subcutâneas , Interferon-alfa/efeitos adversos , Interleucina-2/efeitos adversos , Neoplasias Renais/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias
14.
J Interdiscip Hist ; 5(4): 669-86, 1975.
Artigo em Inglês | MEDLINE | ID: mdl-11619426

RESUMO

PIP: The origins of the birth control movement in England in the 19th cen tury are discussed. The impact of Malthus's "Essay on the Principle of Population" and the activities of such thinkers and reformers as Jermy Bentham, James and John Stuart Mill, Francis Plance, Richard Carlile, Robert Dale Owen, and Charles Knowlton are discussed. The social debate that arose during the century is discussed.^ieng


Assuntos
Anticoncepção/história , Serviços de Planejamento Familiar/história , História Moderna 1601- , Reino Unido
15.
Anaesthesist ; 29(11): 639, 1980 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-7457805

RESUMO

A patient with a large sliding hiatus hernia developed left side pneumothorax and pneumoperitoneum following high inspiratory pressure.


Assuntos
Hérnia Diafragmática/cirurgia , Hérnia Hiatal/cirurgia , Pneumoperitônio/etiologia , Respiração Artificial/efeitos adversos , Idoso , Feminino , Humanos , Pneumotórax/etiologia , Pressão
16.
Astrophys J ; 468(1): L41-4, 1996 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-11541462

RESUMO

We report the discovery of the inner edge of the high velocity CO outflow associated with the bipolar jet originating from IRS 1 in Barnard 5 and the first ever resolution of its circumstellar disk in the 2.6 mm dust continuum and C18O. From high spatial resolution observations made with the Owens Valley Millimeter Array we are able to locate the origin of the outflow to within approximately 500 AU on either side of IRS 1 and apparently at the edge of, or possibly within, its circumstellar disk. The orientation of the continuum disk is perpendicular to the highly collimated jet outflow recently seen in optical emission at much farther distances. The disk has been detected in C18O giving a disk mass approximately 0.16 M (solar). Our HCO+ and HCN maps indicate significant chemical differentiation in the circumstellar region on small scales with HCO+ tracing an extended disk of material. The 12CO interferometer maps of the outflow show two conelike features originating at IRS 1, the blue one fanning open to the northeast and the red one to the southwest. The vertices of the cones are on either side of the circumstellar disk and have a projected opening angle of about 90 degrees. The intrinsic opening angle is in the range of 60 degrees-90 degrees which leads to significant interaction between outflow and infall.


Assuntos
Astronomia , Monóxido de Carbono/análise , Poeira Cósmica/análise , Meio Ambiente Extraterreno , Fenômenos Astronômicos , Isótopos de Carbono , Monóxido de Carbono/química , Gases/análise , Hidrocarbonetos/análise , Cianeto de Hidrogênio/análise , Distribuição Normal , Urano
17.
Astrophys J ; 468(2): 761-73, 1996 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-11541465

RESUMO

L1498 is a classic example of a dense cold pre-protostellar core. To study the evolutionary status, the structure, dynamics, and chemical properties of this core we have obtained high spatial and high spectral resolution observations of molecules tracing densities of 10(3)-10(5) cm-3. We observed CCS, NH3, C3H2, and HC7N with NASA's DSN 70 m antennas. We also present large-scale maps of C18O and 13CO observed with the AT&T 7 m antenna. For the high spatial resolution maps of selected regions within the core we used the VLA for CCS at 22 GHz, and the Owens Valley Radio Observatory (OVRO) MMA for CCS at 94 GHz and CS (2-1). The 22 GHz CCS emission marks a high-density [n(H2) > 10(4) cm -3] core, which is elongated with a major axis along the SE-NW direction. NH3 and C3H2 emissions are located inside the boundary of the CCS emission. C18O emission traces a lower density gas extending beyond the CCS boundary. Along the major axis of the dense core, CCS, NH3 and C3H2 emission show evidence of limb brightening. The observations are consistent with a chemically differentiated onion-shell structure for the L1498 core, with NH3 in the inner and CCS in the outer parts of the core. The high angular resolution (9"-12") spectral line maps obtained by combining NASA Goldstone 70 m and VLA data resolve the CCS 22 GHz emission in the southeast and northwest boundaries into arclike enhancements, supporting the picture that CCS emission originates in a shell outside the NH3 emitting region. Interferometric maps of CCS at 94 GHz and CS at 98 GHz show that their emitting regions contain several small-scale dense condensations. We suggest that the differences between the CCS, CS, C3H2, and NH3 emission are caused by a time-dependent effect as the core evolves slowly. We interpret the chemical and physical properties of L1498 in terms of a quasi-static (or slowly contracting) dense core in which the outer envelope is still growing. The growth rate of the core is determined by the density increase in the CCS shell resulting from the accretion of the outer low-density gas traced by C18O. We conclude that L1498 could become unstable to rapid collapse to form a protostar in less than 5 x 10(6) yr.


Assuntos
Astronomia , Monóxido de Carbono/análise , Meio Ambiente Extraterreno , Gases/análise , Amônia/análise , Fenômenos Astronômicos , Carbono/análise , Carbono/química , Isótopos de Carbono , Gases/química , Interferometria , Distribuição Normal
18.
Anaesthesist ; 32(6): 295-303, 1983 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-6614419

RESUMO

In the course of a clinical study oral administration of two different diazepine derivatives as well as i.m. injection of pethidine and promethazine have been explored with a view to their anxiolytic, sedating and hypnotic action. The study involved 128 patients, randomized into four groups. Group 1 received flunitrazepam 1,5-2 mg p.o. only the evening before operation to group 2 flunitrazepam 1,5-2 p.o. was administered the evening before and the morning of the operation, group 3 were given lormetazepam 2-2,5 mg p.o. at the same time as group 2, in group 4 nitrazepam, 5 mg p.o. the evening before operation and pethidine, 50-100 mg combined with promethazine, 25 mg was given i.m. 60 min before surgery. In group 1 anxiolytic and sedating effect of flunitrazepam were not persistent enough to provide the patient with adequate premedication until the onset of surgery. Intensive sedation and fatigue as well as minimum recollection were observed under medication 2, however, increase in anxiety and depression as well as deterioration of mood were not prevented. Under medication 3 patients felt less exhausted and fatigued than under medication 2, but likewise anxiety and depression increased in the course of the operating day. Group 4 emerged as the last effective premedication both with regard to sleep during the previous night and the conditions of the day of the operation itself.


Assuntos
Ansiolíticos , Benzodiazepinas , Emoções/efeitos dos fármacos , Cuidados Pré-Operatórios , Adulto , Amnésia/induzido quimicamente , Ansiedade/prevenção & controle , Depressão/prevenção & controle , Flunitrazepam/farmacologia , Humanos , Hipnóticos e Sedativos , Lorazepam/análogos & derivados , Lorazepam/farmacologia , Meperidina/farmacologia , Pessoa de Meia-Idade , Prometazina/farmacologia , Psicometria
19.
Int J Exp Diabetes Res ; 2(1): 55-62, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-12369727

RESUMO

Transforming growth factor beta (TGF-beta) is a major promoter of diabetic nephropathy. While TGF-beta1 is the most abundant renal isoform, types 2 and 3 are present as well and have identical in vitro effects. Whole kidney extracts were studied 2 weeks after induction of streptozocin diabetes and in control rats. Mean glomerular area was 25% greater in the diabetic animals. TGF-beta1 showed a 2-fold increase in message with a 3-fold increase in protein. TGF-beta2 mRNA increased approximately 6% while its protein doubled. TGF-beta-message increased by 25%, producing a 35% increase in its protein. TGF-beta-inducible gene H3 mRNA was increased 35% in the diabetic animals, consistent with increased activity of this growth factor. All isoforms of TGF-beta are increased in the diabetic rat kidney. Future studies need to address the specific role that each isoform plays in diabetic nephropathy as well as the impact of therapies on each isoform.


Assuntos
Diabetes Mellitus Experimental/metabolismo , Rim/metabolismo , Fator de Crescimento Transformador beta/metabolismo , Animais , Sequência de Bases , Primers do DNA , Diabetes Mellitus Experimental/patologia , Rim/patologia , Cinética , Masculino , Isoformas de Proteínas/genética , Isoformas de Proteínas/metabolismo , Ratos , Ratos Sprague-Dawley , Valores de Referência , Fator de Crescimento Transformador beta/genética , Fator de Crescimento Transformador beta1 , Fator de Crescimento Transformador beta2 , Fator de Crescimento Transformador beta3
20.
Pediatr Nephrol ; 16(1): 61-8, 2001 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-11198606

RESUMO

Transforming growth factor-beta 1 (TGF-beta 1) has been implicated in many progressive kidney diseases. The present study examines this growth factor during the pubertal and early adult periods. Mixed-sex Munich-Wistar rat kidneys were obtained on selected days of life from birth through 6 months of age. A survey of the TGF-beta 1 system was performed, and then a second experiment focused on cortex and medulla from both sexes at 6 weeks and 16 weeks of age. Reverse transcription polymerase chain reaction for TGF-beta 1 and TGF-beta inducible gene H3 (beta IG-H3) was performed. Active and total levels of protein for TGF-beta 1 were isolated from tissue. Active levels of TGF-beta 1 were somewhat lower in older than in younger animals, without sex differences. beta IG-H3 levels were similar. At 16 weeks females had levels of total growth factor approximately threefold greater than males, while adult males appeared to activate the growth factor much more efficiently. These findings suggest that activation of TGF-beta 1 becomes more efficient following puberty in the male rat, while females appear to have reduced activation efficiency compensated by increased total growth factor. These differences may help explain the deterioration at puberty and sexual dimorphism noted with some progressive nephropathies.


Assuntos
Rim/metabolismo , Caracteres Sexuais , Maturidade Sexual/fisiologia , Fator de Crescimento Transformador beta/metabolismo , Animais , Feminino , Imuno-Histoquímica , RNA Mensageiro/metabolismo , Ratos , Ratos Wistar , Distribuição Tecidual , Fator de Crescimento Transformador beta/genética , Fator de Crescimento Transformador beta1
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