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3.
Vopr Onkol ; 37(2): 206-10, 1991.
Artigo em Russo | MEDLINE | ID: mdl-2014702

RESUMO

A hypothesis presented in the paper discusses the role of valine substitution in p21 protein of H-ras, a product of ras family oncogene. The event was followed by a marked decrease in GTPase activity of the protein and alteration of its function in the cell. Recent results of X-ray structural analysis were compared with the model suggested by the authors earlier. The role of valine substitution in sickle-cell anemia held to be a genetic mechanism of protection against malaria is discussed. Based on similarity of valine substitution in p21 protein and hemoglobin, a relationship between certain forms of malignant transformation and malaria at molecular level is suggested.


Assuntos
Oncogenes/fisiologia , Valina/metabolismo , Anemia Falciforme/metabolismo , GTP Fosfo-Hidrolases/metabolismo , Humanos , Técnicas In Vitro , Malária/metabolismo , Modelos Moleculares , Neoplasias/metabolismo , Proteína Oncogênica p21(ras)/metabolismo , Iniciação Traducional da Cadeia Peptídica/fisiologia , Terminação Traducional da Cadeia Peptídica/fisiologia , Difração de Raios X
8.
Biofizika ; 35(2): 231-5, 1990.
Artigo em Russo | MEDLINE | ID: mdl-2196088

RESUMO

The review deals with analysis of the literature data concerning the importance of valine substitution in certain proteins, namely p21 ras and hemoglobin. A model of the active site of p21 protein is discussed in the light of GTPase activities alterations as a result of monoaminoacid substitution in conservative sites of p21 protein. The established relationship between some forms of transformation and Plasmodium falciparum malaria on the molecular level is shown in a new aspect. The widespread opinion that Hb S is valid as the means of malaria resistance is questioned in terms of new molecular data.


Assuntos
Mutação , Proteína Oncogênica p21(ras)/análise , Valina/genética , Sequência de Aminoácidos , Animais , Sítios de Ligação , Transformação Celular Neoplásica/genética , Guanosina Trifosfato/metabolismo , Humanos , Hidrólise , Malária/genética , Dados de Sequência Molecular , Proteína Oncogênica p21(ras)/genética , Fosforilação , Homologia de Sequência do Ácido Nucleico
9.
Med Parazitol (Mosk) ; (1): 53-7, 1990.
Artigo em Russo | MEDLINE | ID: mdl-2191204

RESUMO

The authors analyze the latest data on antigen pattern of malaria Plasmodium at various stages of development and extraction of immunogenic determinants contributing to creation of malaria vaccine. Knowledge of the spectra of Plasmodium antigens and stimulants of humoral and cellular immune response in the body will simplify the search for effective biotechnological vaccines able to provide reliable protection against malaria.


Assuntos
Biotecnologia/métodos , Malária/prevenção & controle , Plasmodium/imunologia , Vacinas/isolamento & purificação , Sequência de Aminoácidos , Animais , Antígenos de Protozoários/imunologia , Humanos , Dados de Sequência Molecular , Proteínas de Protozoários/imunologia
10.
Farmakol Toksikol ; 52(3): 101-10, 1989.
Artigo em Russo | MEDLINE | ID: mdl-2676589

RESUMO

The recent findings of the research on the acquired immune deficiency syndrome (AIDS) are reviewed. They provide information about the epidemiological, genetical and morphological features of the human immunodeficiency virus (HIV) and HIV-like viruses, in particular, HTLB-1. Special attention was paid to the pharmacological aspects of preventing AIDS and its spreading among the population. Some new concepts and approaches to the elaboration of therapeutic measures are discussed.


Assuntos
Síndrome da Imunodeficiência Adquirida/prevenção & controle , Antivirais/uso terapêutico , Síndrome da Imunodeficiência Adquirida/tratamento farmacológico , Humanos
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