Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0021051 (immunodeficiency)
 71,517 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An extract of culture medium of Lentinus edodes mycelia (LEM) was prepared. This was further fractionated by 50% ethanol precipitation and both the resulting product, E-P-LEM, and LEM were studied to evaluate their effect on the activity of human immunodeficiency virus (HIV) in vitro. The experiments were performed using either a cell-free infection system with MT-4 cells, or a cell-to-cell infection system with MOLT-4 cells, which induces multinucleated giant cells very efficiently. E-P-LEM almost completely blocked both the cytopathic effect of giant cell formation and specific antigen expression due to HIV, whereas LEM before ethanol precipitation blocked the expression of HIV antigen in MT-4 cells only at a high concentration. Pretreatment of the virus with E-P-LEM before infection blocked HIV infection in the target cells. Thus, the inhibitory effect of LEM and E-P-LEM on HIV could be due to a blocking of the initial stages of HIV infection. Moreover, reverse transcriptase activity of avian myeloblastosis virus was inhibited.
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PMID:Inhibition (in vitro) of replication and of the cytopathic effect of human immunodeficiency virus by an extract of the culture medium of Lentinus edodes mycelia. 317 37

AL721, which is a novel lipid mixture extracted from egg yolks, is believed to be a therapeutic pharmacologic agent. AL721 interacts with membranes of various types of cells with a common mode of action. AL721 modifies cellular membrane composition and fluidity through passive extraction and/or exchange of cholesterol. Physiologically diminished cell function due to rigidification of its membrane is reversible both in vitro and in vivo by AL721. Fluidization of aged membranes with AL721 has been shown to restore brain serotonin receptor function both in vitro and in vivo. AL721 can also successfully restore deficient immune responsiveness of lymphocytes to mitogen stimulation in aged subjects. Drug tolerance to morphine and ethanol develops upon elevation of the viscosity of neuronal cell membranes in order to counteract the fluidization effect of the drug. Treatment of rigidified cellular membranes with AL721 in vivo can markedly reduce withdrawal symptoms. The virucidal effect of AL721 on the human immunodeficiency virus is believed to operate by lowering of viral membrane cholesterol thus interfering with the binding of the viral antigen to the host cell. Non-toxicity of AL721 is clearly demonstrated in animal and human safety studies.
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PMID:AL721, a novel membrane fluidizer. 332 66

State agencies have been profoundly impacted by the AIDS epidemic. In the absence of a vaccine that would prevent AIDS or of medicines that would cure it, the primary strategies of such agencies have focused on reducing the spread of AIDS by promoting cessation of high risk behaviors and thus preventing or slowing its transmission. Recent research indicates that the primary route of AIDS transmission into the general heterosexual population is by intravenous (IV) drug abusers, who directly account for about 17% of AIDS cases nationwide. Reducing the spread of AIDS within this group would not only reduce the overall toll of the disease but should limit its spread to the population at large. Infection by the human immunodeficiency virus (HIV) can be minimized by reducing or eliminating certain high-risk activities. In the IV drug using community, the primary intervention strategies include: educating IV drug users about the hazards of AIDS and sharing of needles; enrolling them in treatment programs to reduce drug use; promoting the use of new or sterilized syringes and needles among those who will not abstain from drug use; and discouraging high-risk sexual activity among those who are already infected by HIV. The State of California has already increased the number of treatment slots for IV drug users and, through the Department of Alcohol and Drug Programs, is scaling up its educational, prevention, and intervention activities, particularly those related to safe sex, promoting the cessation of IV drug use, and improving equipment hygiene by those who continue use.
Adv Alcohol Subst Abuse 1987
PMID:The response of state agencies to AIDS, addiction, and alcoholism. 332 46

Human immunodeficiency virus (HIV) infection produces a spectrum of clinical syndromes, progressing in severity from asymptomatic infection through the life-threatening diseases of the acquired immunodeficiency syndrome (AIDS). Current knowledge about the epidemiology, virology, and clinical manifestations of HIV infection and AIDS are reviewed.
Adv Alcohol Subst Abuse 1987
PMID:AIDS update--1987. 332 48

Immunoglobulin samples (HIV-Ig) were prepared by cold ethanol fractionation of human plasma containing antibody against human immunodeficiency virus (HIV). The ability to prevent viral spreading was studied using either human T-cell leukemia virus type I (HTLV-I)-carrying MT-4 cells or in a coculture system using MOLT-4 cells and virus-producing MOLT-4/HIV HTLV-IIIB cells. Treatment of HIV-infected MT-4 cells with HIV-Ig effectively blocked the appearance of antigens of HIV and the virus-induced cytopathic effect. HIV-Ig blocked multinucleated giant cell formation in the MOLT-4 and MOLT-4/HIV HTLV-IIIB coculture system.
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PMID:Efficacy of an immunoglobulin preparation from HIV carriers in preventing HIV replication in vitro. 336 35

Since human immunodeficiency virus (HIV) has been found in the brains of AIDS patients, the possibility was investigated that preparations of human growth hormone (hGH) extracted from human pituitary glands harbor infectious HIV. It was found that the procedure used for extracting hGH, i.e. a combination of acid pH and 10% ethanol, totally inactivates HIV infectivity.
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PMID:Inactivation of human immunodeficiency virus during human growth hormone production. 339 1

The debate over the provision of sterile injection equipment to intravenous drug users, as a means of preventing the spread of the AIDS epidemic, has a number of political, ethical, and clinical implications. The issue has in some respects been inappropriately dichotomized as a conflict between public health agendas and the traditional priorities of drug treatment. The relevant issues include: (1) the existence of evidence for needle-sharing as a route of transmission of human immunodeficiency virus among intravenous drug users; (2) the role of needle scarcity as a factor promoting needle-sharing behavior, and evidence for the ability of drug users to change such behavior; (3) the possibility of increased needle availability leading to increased prevalence of intravenous drug abuse; (4) the possibility that the provision of sterile needles would compromise treatment efforts among drug abusers currently or potentially engaged in the treatment system. These issues are discussed in light of relevant existing data; a multilevel strategy for AIDS prevention among drug users is suggested, addressing both the availability of sterile injection equipment and the promotion of drug treatment goals.
Adv Alcohol Subst Abuse 1987
PMID:Sterile needles and the epidemic of acquired immunodeficiency syndrome: issues for drug abuse treatment and public health. 344 96

The manufacturing procedures used for the preparation of human plasma proteins that were established before AIDS was first described may reasonably be expected to provide AIDS safe products. Such manufacturing procedures are heat treatment at 60 degrees C in solution for ten hours, described as pasteurization, preparation of human immunoglobulins by ethanol precipitation, pepsin treatment, and sulfonation. To test whether these methods effectively inactivated and/or eliminated the AIDS causing human immunodeficiency virus (HIV), nine volumes or more of plasma or a plasma fraction taken from a production lot were spiked with HIV using one volume of a HIV concentrate and were then subjected to exactly the same procedure as that specified for the manufacturing process. HIV infectivity titres of the initial HIV/plasma protein mixtures and of the resulting products after treatment were determined by the H9 cell assay. In all cases studied complete inactivation/elimination of the added HIV was achieved. We therefore conclude that pasteurization of human plasma proteins or the manufacturing procedure used for the isolation of immunoglobulins from plasma pools result in final products which do not contain any infectious HIV and which are thus safe in that they cannot be vehicles for the transmission of AIDS.
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PMID:A strategy for testing established human plasma protein manufacturing procedures for their ability to inactivate or eliminate human immunodeficiency virus. 364 41

Chronic ethanol (EtOH) abuse in humans leads to a variety of immunomodulatory events that can alter resistance to a number of infectious agents. Whether alcohol abuse affects the susceptibility to human immunodeficiency virus infection or the subsequent development of acquired immune deficiency syndrome (AIDS) is a matter of extreme importance; however, available information in humans or animal models is limited. The goal of this study was to evaluate the effect of chronic EtOH feeding in mice on the development of immunodeficiency in the murine model of AIDS (MAIDS). C57BI/6 mice were placed on the Lieber-DeCarli liquid EtOH diet (25% or 31% total caloric intake) or a nutrient-matched isocaloric liquid control diet. Seven days later, mice were infected with the LP-BM5 murine leukemia virus mixture, and groups of infected and noninfected mice were assayed at defined time points postinfection for antigen-specific and nonspecific immune responses. In the absence of retroviral infection, chronic EtOH feeding (5-8 weeks) led to reductions in spleen weights, compared with isocaloric controls. In spite of reduced spleen size, mitogenic responses of spleen cells to concanavalin A (ConA) and lipopolysaccharide (LPS) were elevated in EtOH-fed mice, as compared with mice fed the control diet. Chronic EtOH feeding also enhanced the allogeneic mixed lymphocyte response and increased antigen-specific priming of both B-cells and CD4+ T-cells to the antigen, sheep red blood cells. In MAIDS-infected mice, chronic EtOH feeding delayed but did not prevent the onset of virus-induced immunodeficiency and MAIDS-induced autoantibody synthesis.(ABSTRACT TRUNCATED AT 250 WORDS)
Alcohol Clin Exp Res 1995 Aug
PMID:Ethanol as a possible cofactor in the development of murine AIDS. 748 39

We examined the effects of human immunodeficiency virus (HIV) infection and chronic alcohol consumption on cerebral phosphorus metabolites to determine if chronic alcohol abuse is a risk factor for the progression of neurological effects of HIV infection. We studied 15 HIV- alcoholics, 8 HIV- light/nondrinkers, 32 HIV+ alcoholics, and 41 HIV+ light/nondrinking men, with both HIV+ groups having similar CD4 lymphocyte counts. We used localized 31-phosphorus magnetic resonance spectroscopy after magnetic resonance imaging to examine two brain volumes in superior white matter and subcortical gray matter. Chronic alcohol consumption was associated with reduced white matter concentrations of phosphodiester (PDE) and phosphocreatine (PCr). Also in the white matter, acquired immune deficiency syndrome (AIDS) and AIDS-related complex (ARC) were associated with reduced concentrations of PDE and PCr, compared with both HIV- and clinically asymptomatic HIV+ subjects. Because no alcohol-by-HIV interactions were detected, the effects of HIV infection and alcohol abuse were cumulative. This is reflected in a successive decrease of white matter PDE and PCr concentrations in the order HIV- light/nondrinkers/HIV- alcoholics/HIV+ light/nondrinkers/HIV+ alcoholics. Subcortical gray matter PDE concentrations were lower in ARC/AIDS alcoholics than in HIV- light/nondrinking individuals. These findings suggest altered brain phospholipid metabolites and energy metabolites with alcohol abuse and HIV infection. They demonstrate that the adverse metabolic effects of HIV on the brain are augmented by chronic alcohol abuse.
Alcohol Clin Exp Res 1995 Jun
PMID:Effects of chronic alcohol abuse and HIV infection on brain phosphorus metabolites. 757 94


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