Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027947 (neutropenia)
 17,527 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In 106 workers (47 women and 59 men) having occupational contact with organic solvents containing benzene and its homologues during 1 to 122 months the quantitative evaluation of the white blood cell and the platelet system has been performed. In workers having longer time of service than 55 months the decreased T and the "non-T, non-B" lymphocyte count as well as increased counts of monocytes in the peripheral blood have been stated. Furthermore, the negative correlation between the T cell numbers and the exposure time has been stated what indicates the practical value of the E rosette test in evaluation of early biological effects of occupational exposure to solvents containing benzene, toluene and xylene. According to the authors' opinion a depressive effect of benzene and its homologues on the T cell-dependent immunity suggests an alternative mechanism of cancerogenic activity of that compounds via the immune system. The toxic effect of organic solvents containing benzene and its homologues on blood forming organs is among other reflected in quantitative alterations of the white blood cells and the platelet systems (6, 17). In workers occupationally exposed to benzene, toluene and xylene neutropenia (1, 2, 6, 17), eosinophilia (2), basophilia (2), monocytosis (14) and both lymphocytosis and lymphocytopenia (3, 14) has been observed. The occupational contact with above compounds may also results in thrombocytopenia (11, 12) or qualitative changes in platelets resembling that noted in patients with the Glanzman thrombasthenia (4).
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PMID:T and B cells and occupational exposure to benzene and its homologues (with regard to other blood cells). 698 48

The toxic effects of environmental factors at work places on the hematopoietic and immune systems are of basic importance due to the time of exposure, lasting on average 8 hours daily during one week. Porphyrinurias and porphyrias have been observed after exposure to hexachlorobenzene, chlorinated dibenzodioxins, polychlorinated biphenyls, polybrominated biphenyls, vinyl chloride and lead. Aplastic anemia may occur after exposure to benzene, pesticides, arsenic, cadmium and copper compounds. Megaloblastic anemia has been noted in subjects exposed to arsenic, chlordane, benzene and nitrous oxide. Methemoglobinemia is induced by aromatic nitro and amino compounds. Hemolytic reactions caused by arsenic, methyl chloride, naphthalene, lead, cadmium and mercury compounds represent a separate problem. Immunodeficiencies resulting in decreased antitumor and antiinfectious immunity have been reported in subjects exposed to asbestos, ozone, dimethylsulphoxide, vinilidene chloride, and benzene homologues. Lymphocytopenia may be induced by manganese, lead, toluene and industrial noise. Neutropenia was marked after exposure to carbon disulphide, arsenic compounds, benzene and electromagnetic fields. Only a few reports concern the lymphocyte T3, T4 and T8 subpopulations. Electromagnetic fields (microwaves) cause an imbalance of that subpopulation, consisting of a decrease in the T8 cell count. The neutrophil enzymes, such as myeloperoxidase and alkaline phosphatase, decrease in their activity after exposure to polychlorinated biphenyls, carbon disulphide, chlorobenzene and DDT. A majority of agents cited include genotoxic effects reflected in chromosome aberrations and increased sister chromatid exchange and abnormal unscheduled DNA synthesis. Leukemia or lymphoma risk is increased after exposure to pesticides, electromagnetic fields, benzene and irradiation.
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PMID:Immunotoxic and hematotoxic effects of occupational exposures. 817 62

A total of 171 workers with occupational exposure to benzene, toluene, xylene and ethylbenzene, and 37 controls were studied. Hematological parameters were measured using the automated hematology analyzer, (System 190). By routine microscopic methods we investigated the differential distribution of leukocytes and alkaline phosphatase in granulocytes. Of the workers, 95 (55.5%) had deviations of the different blood cells. Hypochromic anemia was found in 50 male workers (29.6%), while leukocytosis with lymphocytosis and neutropenia was found in 20%. In 11 workers (6.4%), dyshematopoiesis, was detected, affecting more than one blood population: anemia in combination with thrombocytopenia or leukocytosis with decreased enzyme activity of the granulocyte alkaline phosphatase. No definite relationship between changes in peripheral blood elements and length of service of the workers was found, but workers with over 20 years' exposure to aromatic hydrocarbons suffered from more severe forms of anemia.
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PMID:Changes in the peripheral blood of workers with occupational exposure to aromatic hydrocarbons. 982 88