Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0023418 (leukemia)
 93,477 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In 42 patients with induction treatment of acute myeloblastic and lymphoblastic leukaemia the authors compared efficacy of selective decontamination of the gastrointestinal tract in prevention of infections during neutropenia less than 0.5.10(9)/l in two comparable groups. Twenty-two patients were treated with Ofloxacin (Tarivid, Hoechst Co.), 20 patients with Trimetroprim-Sulfamethoxazol (Biseptol, Polfa Co.). Both groups had concurrently also Ketoconazol in prevention of mycotic infection. The investigation revealed that Tarivid is a suitable alternative drug for selective decontamination, because it delays the onset of acquired infection, as compared with Biseptol, it reduced more efficiently the frequency of Gram-negative colonization and life-threatening Gram-negative sepsis, caused by resistent strains; its tolerance is significantly better. There was no significant difference in the occurrence of febrile days, febrile episodes, the duration of antibiotic treatment, the number of sepsis in two groups. The effect of Tarivid and Biseptol on the Gram-positive microbial flora is inadequate. Subclavian catheter increases in particularly the risk of Gram-positive sepsis in both groups.
 ...
PMID:[Comparison of Tarivid and Biseptol in the prevention of bacterial infections in patients with acute leukemia]. 159 5

The antifungal drug, ketoconazole, was reported to antagonize the induction of the enzyme tyrosine aminotransferase (TAT) by glucocorticoids in hepatoma tissue culture (HTC) cells, and to compete with glucocorticoids for binding to the glucocorticoid receptor. Since glucocorticoids inhibit the growth of the human leukemia cell line CEM-C7, ketoconazole might be expected to reverse this inhibition. Unexpectedly, ketoconazole inhibited CEM-C7 cell growth without utilizing glucocorticoid receptors. This was confirmed by ketoconazole inhibition of the growth of a receptor-less subline of CEM-C7 cells which are insensitive to glucocorticoids. Ketoconazole competed with triamcinolone acetonide (TA) for binding to the glucocorticoid receptor in cell-free supernatant prepared from CEM-C7 cells, but this was greatly reduced if ketoconazole and TA were incubated with intact cells prior to preparation of the cell-free supernatant. Ketoconazole inhibited induction by TA of the enzyme glutamine synthetase only at concentrations of 45-90 microM. We conclude that ketoconazole antagonism of glucocorticoid activity in CEM-C7 cells is probably not of pharmacologic significance due to the large concentrations required, and its reduced interaction with receptors in intact cells. The growth inhibitory activity of ketoconazole may be of interest in cancer chemotherapy.
 ...
PMID:Ketoconazole inhibition and glucocorticoid action in the human lymphoblastic leukemia cell line CEM-C7. 289 83

Coccidioidomycosis was diagnosed in 48 cats. Forty-one cases were identified within a period of 3 years. Coccidioides immitis was revealed by cytological or histopathological examinations, or culture in 70% of cats. The remaining 30% of cases were diagnosed by appropriate clinical signs, radiographic lesions, and serological test results. The average age of affected cats was 6.2 years with a median age of 5.0 years. Fifty-four percent (n = 26) were female and 46% (n = 22) were male. Domestic shorthaired and longhaired breeds comprised 89% (n = 41) of affected cats. Sixty-seven percent of cases were diagnosed during the 6-month period of December through May. Cats infected with C immitis were presented for evaluation of dermatologic (56%), respiratory (25%), musculoskeletal (19%), and neurological or ophthalmologic signs (19%). Fever, inappetence, and weight loss were present in 44% of the cats. Duration of clinical signs before diagnosis was less than 4 weeks in 85% (n = 42) of cats, with an average of 3.8 weeks and a median of 2 weeks. Agar gel immunodiffusion tests were positive in all 39 cats tested at sometime during the course of their disease. Hyperproteinemia (greater than 7.9 g/dL) was present in 52% (10/23) of cases. The majority of cats (n = 39) were negative for feline leukemia virus. Antibodies to feline immunodeficiency virus were absent in the 19 cats tested. Ketoconazole was the most common antifungal agent used to treat cats with coccidioidomycosis. Duration of treatment ranged from less than 1 week to 43 months. Thirty-two cats are currently asymptomatic, with or without treatment. Eleven cats died or were euthanized.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:Coccidioidomycosis in 48 cats: a retrospective study (1984-1993) 776 Mar 14

Some generalizations regarding fungal infections of the larynx can be made. The reader is cautioned to refer to discussions of the individual infections for exceptions to these generalizations. For the most part, the mycoses are organisms of low pathogenicity emerging as opportunistic organisms thriving in a compromised host. The isolated fungal infections of the larynx reported are exceptions to the rule. Involvement of the larynx and other body sites outside the lung generally indicates a widely disseminated form of the disease. Fungal infections most commonly occur in the immunocompromised patient, including those afflicted with AIDS, cancer, leukemia, and other lymphoreticular neoplasms, patients on long-term corticosteroid therapy, patients with chronic systemic diseases, including diabetes mellitus and severe pulmonary disease, and patients who have undergone successful organ transplantation, which depends on immunologic suppression. Although specific fungi are characteristically found in designated endemic areas, the diseases may surface in remote areas in persons who have recently traveled through the endemic sites. The pathologic picture can be confusing, and pseudoepitheliomatous changes at times resemble malignancy. When atypical features occur in a patient with a suspicious history, special stains and cultures as well as skin tests and serologic studies may be helpful in establishing the diagnosis. For the most part, amphotericin B has been the mainstay of therapy, although the introduction of the newer azole drugs (ketoconazole, itraconazole and fluconazole) may present a breakthrough in the future therapy of these lesions. Ketoconazole has been proven efficacious in certain fungal infections. Itraconazole has recently been released for clinical use. Because of its lower incidence of toxic side effects, it may replace ketoconazole in the therapy of these diseases. Finally, fluconazole, taken orally, effectively crosses the blood-brain barrier; appropriate clinical trials may prove it to be an acceptable agent for those fungi commonly affecting the central nervous system.
 ...
PMID:Fungal infections of the larynx. 829 Feb 83

Ketoconazole (keto) or liarozole (liaro), inhibitors of the cytochrome P450 enzymes that mediate vitamin D and A hydroxylations, could potentiate the antiproliferative effects of 1alpha,25-dihydroxyvitamin D3 [1alpha,25(OH)2D3] and its analogs. Proliferation of MCF-7 and T47-D human breast cancer cells, MG-63 human osteosarcoma cells and HL-60 human promyeloid leukemia cells was concentration dependently inhibited by 1alpha,25(OH)2D3. The vitamin D analogs KH 1060 [20-epi-22-oxa-24,26,27-trihomo-1alpha,25(OH)2D3], RO 23-6010 [16-ene-23-yne-26-trifluoro-1,25(OH)2D2D3], ZXY 835 [20-epi-23-yne-25,26-epoxy-1alpha(OH)D3], and CD 99 [11alpha-methyl-1alpha,25(OH)2D3] were 150-,58-,16- and 7-fold more potent than 1alpha,25(OH)2D3 in inhibiting the proliferation of MCF-7 cells, respectively. A similar rank order of potency was observed in other cell lines. The antiproliferative effects of the vitamin D hormone and analogs was enhanced in MCF-7 cells when coincubated with 1 microM keto (7-, 10-, 5-, 25- and 1.3-fold more potent than in the absence of keto), respectively. The antiproliferative effect was less enhanced when 1alpha,25(OH)2D3 or its analogs KH 1060, ZXY 835 and RO 23-6010 were combined with liaro (3-, 7-, 2- and 3-fold, respectively). Keto and liaro did not markedly potentiate the activity of 1alpha,25(OH)2D3 or its analogs in MG-63 or HL-60 cells. These results suggest that differences in cellular metabolism can at least partially explain the different potency of vitamin D analogs. Moreover, the metabolism of vitamin D analogs is cell-type specific.
 ...
PMID:Enhancement of antiproliferative activity of 1alpha,25-dihydroxyvitamin D3 (analogs) by cytochrome P450 enzyme inhibitors is compound- and cell-type specific. 864 29