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1.
Science ; 183(4123): 427-8, 1974 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-4203023

RESUMO

A comparison of the mean life-spans for populations of Drosophila melanogaster at 10 degrees , 20 degrees , 25 degrees , and 30 degrees C maintained on media prepared with distilled water and with 50 percent deuterium oxide shows that deuteration decreases longevity at all four temperatures. The magnitude of the difference between the mean survival times of populations maintained on deuterated and nondeuterated media is inversely related to temperature between 10 degrees and 30 degrees C.


Assuntos
Deutério/farmacologia , Drosophila melanogaster/crescimento & desenvolvimento , Longevidade/efeitos dos fármacos , Temperatura , Animais , Meios de Cultura
2.
J Am Geriatr Soc ; 31(10): 607-12, 1983 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-6619468

RESUMO

The reliability of the Functional Assessment Inventory (FAI) was evaluated using a sample of VA domiciliary and nursing home patients. The interobserver and interrater reliability coefficients of the summary rating scales, based on a single assessment, tended to be higher than their test-retest reliability coefficients, based on two independent assessments separated by a modal four-week interval. Validity coefficients, using the OARS instrument ratings as criteria, also based on two independent assessments several weeks apart, were, on the average, as high as the test-retest reliability coefficients. More specifically, the mental health, physical health, and activities of daily living rating scales, along with the objectively scored Short Portable Mental Status Questionnaire and Short Psychiatric Evaluation Schedule, tended to yield relatively similar scores with repeated measurement, while the social resources and economic resources scales were somewhat less stable, a discrepancy possibly explained by the homogeneous nature of the social and economic status of most of the patients (institutionalized veterans). Thus the reliability and validity of the FAI are satisfactory, but the stability of some of its scales requires further investigation.


Assuntos
Atividades Cotidianas , Geriatria/métodos , Indicadores Básicos de Saúde , Inquéritos Epidemiológicos , Idoso , Demografia , Estudos de Avaliação como Assunto , Feminino , Instituição de Longa Permanência para Idosos , Humanos , Masculino , Saúde Mental , Pessoa de Meia-Idade , Casas de Saúde , Escalas de Graduação Psiquiátrica
12.
Adv Exp Med Biol ; 108: 1-4, 1978.
Artigo em Inglês | MEDLINE | ID: mdl-742523
14.
Intervirology ; 14(5-6): 321-5, 1980.
Artigo em Inglês | MEDLINE | ID: mdl-6265402

RESUMO

Prophylactic treatment of hamsters and chickens with an aromatic retinoid (Ro 10-9359) inhibited Rous sarcoma virus (RSV) tumorigenesis. Retinoid administration to chickens with RSV-induced tumors resulted in tumor regression and/or confinement to the primary site. The retinoid also exerted a therapeutic effect on Shope virus papilloma development in the skin of rabbits.


Assuntos
Etretinato/uso terapêutico , Sarcoma Aviário/prevenção & controle , Tretinoína/análogos & derivados , Infecções Tumorais por Vírus/tratamento farmacológico , Animais , Anticorpos Antivirais/biossíntese , Vírus da Leucose Aviária/imunologia , Vírus do Sarcoma Aviário/crescimento & desenvolvimento , Galinhas , Cricetinae , Mesocricetus , Camundongos , Sarcoma Aviário/tratamento farmacológico
15.
Gerontologia ; 21(1): 57-63, 1975.
Artigo em Inglês | MEDLINE | ID: mdl-806486

RESUMO

The Orgel hypothesis receives considerable attention as a possible explanation for the phenomenon of senescence. Experimental observations which argue in favor of the Orgel hypothesis are discussed, and critized in part. This is followed by a presentation of experimental data which argue in opposition to the notion. On the basis of the considerable body of data which argue in opposition to the Orgel theory, a call for reappraisal of the applicability of this theory to the phenomenon of senescence is suggested.


Assuntos
Envelhecimento , Enzimas/metabolismo , Biossíntese de Proteínas , Aminoácidos/metabolismo , Animais , Reações Cruzadas , Drosophila/fisiologia , Feminino , Fibroblastos/enzimologia , Frutose-Bifosfato Aldolase/metabolismo , Glucosefosfato Desidrogenase/metabolismo , Glucofosfatos/metabolismo , Temperatura Alta , Humanos , Fígado/enzimologia , Pulmão/embriologia , Liases/metabolismo , Masculino , NADPH-Ferri-Hemoproteína Redutase/metabolismo , Nematoides/enzimologia , Gravidez
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