Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0011570 (depression)
 172,036 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

High-dose recombinant leukocyte A interferon (50 X 10(6) U/m2 body surface area, intramuscularly, three times weekly) was tested in a clinical trial involving patients with advanced cutaneous T-cell lymphomas to determine its effectiveness and toxicity. All 20 patients had advanced stages of disease refractory to two or more standard therapies. Objective partial remissions lasting 3 months to more than 25 months (median, 5 months) were documented in 9 patients. The major dose-limiting toxicity was a severe influenza-like syndrome with malaise, anorexia, depression, weight loss, and decreased performance status; this effect was reversible after dose reductions in all patients and did not recur with re-escalation of doses in 10 patients. This interferon preparation is highly effective in the treatment of advanced refractory cutaneous T-cell lymphomas, and new schedules to reduce toxicity and achieve complete responses, combined treatment with chemotherapy or serotherapy, and its use in earlier stages of disease should be investigated.
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PMID:Recombinant leukocyte A interferon: an active agent in advanced cutaneous T-cell lymphomas. 633 65

The effect on respiratory burst of murine splenic cells after exposure to influenza viruses was studied by luminol-dependent chemiluminescence (CL). Infectious influenza A and B viruses considerably depressed the zymosan-induced CL response of the cells. Commercially available trivalent influenza virus vaccines also depressed CL activity. The whole-virus vaccine induced the greatest inhibition of the CL response, followed by the subunit and the split-virus vaccines. Virus-induced depression of CL was observed in the unseparated and in the granulocyte-enriched populations but no apparent effect was found in the lymphocyte-enriched populations. Prior sensitization of mice with representative, inactivated prototype strains of human influenza A and B viruses depressed the moderate CL induced by infectious influenza viruses. These results indicate that both infectious and inactivated influenza viruses impair the generation of the respiratory burst.
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PMID:Depression of chemiluminescence response in mouse spleen cells by infective and inactivated influenza virus. 647 54

Influenza virus infection in vitro depresses accessory cell function of human peripheral blood-derived macrophages (PBM phi) for lymphocyte proliferative responses, but effects on such functions of alveolar macrophages (AlvM phi) have not been described. AlvM phi were obtained by bronchoalveolar lavage from normal young volunteers, and the effects of influenza virus infection of AlvM phi and autologous PBM phi were compared by measuring the accessory support provided by these cells for phytohemagglutinin-induced proliferation of purified autologous lymphocytes. Accessory cell function of AlvM phi was not altered by viral infection; in contrast, this function was significantly depressed with autologous virus-infected PBM phi. Virus-infected PBM phi produced greater amounts of interferon than did autologous AlvM phi. However, synthesis of interferon or prostaglandins by virus-infected cells could not account, per se, for depression of lymphocyte responses in the presence of PBM phi. These studies detail functional heterogeneity of autologous PBM phi and AlvM phi in response to a common respiratory-tract pathogen, influenza virus.
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PMID:Influenza virus infection of human alveolar and blood-derived macrophages: differences in accessory cell function and interferon production. 673 84

We have previously shown that chinchillas infected with a multiply passaged laboratory strain of influenza A/NWS/33 (H1N1) develop negative middle-ear pressure; polymorphonuclear leukocyte oxidative, bactericidal, and chemotactic dysfunction; and increased susceptibility to pneumococcal otitis media. Because influenza A virus strains show different virulence in humans, three such strains were compared in the chinchilla model. Negative middle-ear pressure and tympanic membrane inflammation developed significantly more often in chinchillas infected with wild-type H3N2 virus than with either wild-type H1N1 virus or an attenuated, cold-adapted H3N2 vaccine strain, CR29. Marked depression in polymorphonuclear leukocyte chemiluminescent activity also developed significantly more often in H3N2 infected animals than in H1N1- or CR29-infected animals. Intranasal challenge of influenza virus-infected animals with type 7 Streptococcus pneumoniae resulted in a significantly greater occurrence of pneumococcal otitis media in H3N2-infected animals than in H1N1-, CR29-, or non-influenza-infected control animals. Clearance of pneumococci from nasal washings of animals infected with wild-type H3N2 was significantly delayed in comparison with the other groups. Thus, the previously demonstrated increased susceptibility to otitis media among children infected with H3N2 influenza virus may relate to the capacity of this strain to induce negative middle-ear pressure, polymorphonuclear leukocyte dysfunction, and alteration in the mucosal clearance of pneumococci.
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PMID:Different virulence of influenza A virus strains and susceptibility to pneumococcal otitis media in chinchillas. 688 70

Decreased host defense against bacterial disease associated with influenza infection may be related to virus-induced changes in phagocytic cell function. Influenza A virus initiates the respiratory burst in peripheral blood monocytes and polymorphonuclear leukocytes, with a peak chemiluminescent response approximately 3 min after virus is added to the cells in vitro. Electron micrographs of phagocytic cells incubated with influenza virus demonstrated virus attached to the cell membrane and within phagocytic vacuoles. After 20 min of incubation of the virus with phagocytic cells, the chemiluminescent response to opsonized zymosan or phorbol myristate acetate was decreased by 30 to 90%. Phagocytic activity of monocytes and polymorphonuclear leukocytes incubate with influenza virus was normal, but the bactericidal activity was significantly depressed. Influenza A virus therefore stimulates an oxidative burst in monocytes as well as polymorphonuclear leukocytes, leading to a subsequent depression of the oxidative metabolic response and bactericidal capacity of the phagocytic cells.
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PMID:Depression of monocyte and polymorphonuclear leukocyte oxidative metabolism and bactericidal capacity by influenza A virus. 705 26

The present study examined the effect of various unopsonized strains of influenza A virus on release of myeloperoxidase (MPO) and acid phosphatase in polymorphonuclear leukocytes (PMNL). These results were correlated with the effect that these same viruses had on bactericidal activity in PMNL. Several strains of virus inhibited the fusion of azurophil granules with phagosomes containing Staphylococcus aureus. These same strains inhibited the extracellular release of MPO from PMNL (39-59%) and caused depressed killing (42-77%). In contrast, one of the influenza viruses (X-47a) did not inhibit PMNL MPO release or killing. The data indicate a close relationship between the ability of influenza virus to ablate normal intracellular lysosome-phagosome fusion with subsequent depression of bactericidal functions of PMNL.
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PMID:Inhibition of neutrophil lysosome-phagosome fusion associated with influenza virus infection in vitro. Role in depressed bactericidal activity. 708 79

Previous studies have shown that influenza A virus can activate the polymorphonuclear leukocyte (PMN) respiratory burst and that upon subsequent stimulation of the cell there is depressed metabolic function. We examined the mechanism by which influenza virus causes PMN dysfunction by measuring the effect upon the chemiluminescent activity of cells of varying the type of influenza virus used, the period of time that cells were exposed to virus, and the secondary stimulus that was used. The various types of intact influenza virus elicited different amounts of chemiluminescent activity, but when cells were subsequently stimulated with phorbol myristate acetate, each virus caused equivalent depression of the PMN response. Purified glycoproteins incorporated into a liposome structure similarly stimulated the PMN chemiluminescence, yet did not induce PMN dysfunction. Depressed PMN function was noted after as little as 5 min of incubation of cells with virus and occurred to both receptor-dependent (zymosan, N-formylmethionyl-leucyl-phenylalanine, and phorbol myristate acetate) and -independent (calcium ionophore A23187) stimuli.
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PMID:Influenza A virus-induced polymorphonuclear leukocyte dysfunction. 711 56

A prospective study was carried out on post-influenzal depression. Four hundred patients presenting with psychiatric illness for the first time took part. The results show that there is no correlation between depressive illness and the demonstration of influenza antibody titres, an indication of recent influenza infection.
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PMID:Post-influenzal depression. 726 Apr 92

The chronic candidiasis syndrome, also known as the Candida-related complex, putatively caused by the overgrowth of Candida albicans in the gastrointestinal tract and secondarily in the genital organs, is briefly described. Patients with this disorder have many of the same symptoms as those with the chronic fatigue syndrome, except for the recurrent flu-like symptoms of the latter disorder. The positive response of a large number of patients with the chronic fatigue syndrome (CFS) to an oral antifungal agent and a diet for intestinal candidiasis has been described by another clinician. There is evidence that Candida albicans infection of the mucous membranes depresses T cell and natural killer (NK) cell function. Similar abnormalities of immune function are found in the CFS. The function of cytotoxic T cells, T helper cells, and NK cells is important in preventing reactivation of infections from Epstein-Barr virus, cytomegalovirus, and other herpesviruses. Reactivation of one or more of these viruses could lead to the expression of the flu-like symptoms in the CFS. Yet the immune dysfunction found in this disorder has been considered the primary underlying causal factor. It is proposed that chronic intestinal candidiasis may be an agent which leads to immune depression in many CFS patients and therefore that it could be a causal factor in CFS.
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PMID:Chronic intestinal candidiasis as a possible etiological factor in the chronic fatigue syndrome. 747 98

To assess the efficacy of recombinant alfa 2b-interferon treatment "Heberon alfa R" in children with chronic active hepatitis (CAH) B virus, we conducted a long-term study (three years) in 22 children infected with hepatitis B virus (17 males and 5 females), age range 3 to 15 years. Diagnostic criteria included the clinical picture, laboratory tests, virus markers (HBeAg, HBsAg), laparoscopy and liver biopsy. Children under 12 years received 3 million IU of interferon per day whereas those older than 12 years received 6 million IU of interferon per day by intramuscular injection, three times per week for four months. Alanine aminotransferase (ALT) levels had been elevated for six months in all patients and hepatitis B viral infection was replicative. A variance analysis was made to evaluate ALT response to interferon administration and the Mc Nemar test was used to analyze HBeAg/anti-HBe behavior. Seventeen (77%) out of 22 patients responded to treatment (clearance of HBeAg and ALT levels returned to normal. HBeAg seroconversion (anti-HBe) occurred in 36% of patients during the first year (p < 0.01) and it increased to 50% by the third year follow-up. ALAT levels also decreased and the difference was statistically significant (p < 0.01). This occurred during and after treatment with a steady and increasing tendency to return to normal levels within the first and third year. Side effects were scarce, transient and tolerable and they only appeared during the initial phase of treatment; symptoms were mainly influenza-like and they disappeared very soon. There were no late side effects such as medullar depression, renal toxicity and glycemia alterations.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Long term study of the treatment with recombinant alfa 2b interferon in chronic active hepatitis due to B virus in children and adolescents]. 755 76


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