RESUMEN
Some aspects of relationships between soil ameba and the causative agents of plague and pseudotuberculosis, capable of forming natural associations, are considered. Ameba can phagocytose bacteria causing plague and pseudotuberculosis. Cases of the preservation of individual bacterial cells at the stationary phase and in precysts of amebae have been registered.
Asunto(s)
Hartmannella/fisiología , Microbiología del Suelo , Yersinia pestis/fisiología , Yersinia pseudotuberculosis/fisiología , Animales , Quimiotaxis , Ecología , Hartmannella/microbiología , Hartmannella/ultraestructura , Microscopía Electrónica , Fagocitosis , Factores de Tiempo , Yersinia pestis/ultraestructura , Yersinia pseudotuberculosis/ultraestructuraRESUMEN
A case of typical Ph-positive chronic myelogenous leukemia developed in a 58-year old female with a 7-year history of chronic lymphoproliferative disease is described. With the second disease progression, the features of lymphoid proliferation disappeared almost completely. Possible causes of this rare combination of two diseases are discussed.
Asunto(s)
Leucemia Mielógena Crónica BCR-ABL Positiva/etiología , Linfoma/complicaciones , Enfermedad Crónica , Femenino , Humanos , Persona de Mediana Edad , Pronóstico , Factores de TiempoRESUMEN
A total of 5 patients with a clinicohematological picture resembling hairy-cell leukemia (HCL) have been described. However, the morphological features of leukemic lymphocytes, the absence of acid phosphatase in them, the nodular character of the bone marrow lesion combined with an unusual phenotype have permitted the authors to distinguish these cases as a separate variant of B-cell malignant lymphoma. Paraprotein (M-class) was detected in the blood of two of the patients. A conclusion has been made that the combination of splenomegaly with hairy lymphocytes in the blood is characteristic of not only HCL, but it can be also observed in different variants of malignant lymphoma.
Asunto(s)
Leucemia de Células Pilosas/diagnóstico , Linfocitos/patología , Linfoma/diagnóstico , Esplenomegalia/diagnóstico , Adulto , Anciano , Diagnóstico Diferencial , Femenino , Humanos , Leucemia de Células Pilosas/sangre , Linfoma/sangre , Linfoma/clasificación , Linfoma/complicaciones , Masculino , Persona de Mediana Edad , Esplenomegalia/sangre , Esplenomegalia/complicacionesRESUMEN
A patient has been described with an unusual variant of B-cell lymphoid leukemia. Specific morphology of leukemic cells (the presence of nuclear cleavage), initial and principal localization of the process in the bone marrow, as well as an original phenotype of malignant cells (CD5+, CD35+, CD37+ and CD38+) have given the grounds for the designation of this rare variant of leukemia as centrocytic.
Asunto(s)
Linfocitos B/patología , Médula Ósea/patología , Leucemia Linfocítica Crónica de Células B/diagnóstico , Terminología como Asunto , Anciano , Humanos , Leucemia Linfocítica Crónica de Células B/sangre , Leucemia Linfocítica Crónica de Células B/clasificación , MasculinoRESUMEN
Under experimental conditions individuals of C. (Medioctenophthalmus) golovi golovi Ioff et Tiflov, 1930 complete their metamorphosis within a wide range of temperatures (from 28-30 degrees to 2-6 degrees) and at high humidity of 90 to 100%. The highest survival of larvae and cocoon stages was observed at 23-25 degrees to 9-11 degrees. The development from egg to imago lasts 28 to 557 days depending on the temperature and great extent of hatching under all conditions. Embryogenesis carries out 4-97 days. The ability of C. golovi to complete metamorphosis at 2-6 degrees and to exist for a long time at the larval stage (up to 516 days) differs it from other souslik fleas and other species of Ctenophthalmus studied at the preimaginal stages.
Asunto(s)
Siphonaptera/crecimiento & desarrollo , Animales , Humedad , Larva/crecimiento & desarrollo , Metamorfosis Biológica , Temperatura , Factores de TiempoRESUMEN
Data are given on the fleas of Citellus musicus from Central Caucasus. Ecological peculiarities of fleas from the above region were compared with data known for fleas from plain Precaucasus. Differences between annual cycles of fleas of the same species from two altitude belts of the Baksan valley are considered. Epizootological significance of ecological peculiarities of fleas in the Baksan plague nidus is discussed.