Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0019693 (HIV)
 170,526 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The risk of acquiring diseases from transfusion of blood and blood products is well recognized and the issue of parvovirus in haemophiliacs is not a new one. We report two patients with haemophilia acquiring iatrogenic parvovirus B19 infection, resulting in life-threatening sepsis in one, and immunocompetent adult. Over the last 10 years there has been great progress in manufacturing safer products with regard to enveloped viruses such as HIV, hepatitis B and C. A recent outbreak across Europe of hepatitis A in haemophiliacs treated with plasma-derived factor VII concentrates has made haemophilic treaters concerned about the known (parvovirus B19 and hepatitis A) and the unknown non-lipid enveloped viruses that may be contained in the clotting factor concentrates, because these are resistant to the existing viral inactivating techniques. The possibility of HIV itself mutating into a non-lipid enveloped virus emphasizes the need to seek and use safer products.
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PMID:Transmission of symptomatic parvovirus B19 infection by clotting factor concentrate. 863 48

Liposomes have been used therapeutically to deliver drugs to certain anatomical sites. The use of liposomes to deliver antigens, although not a new concept, has received less attention. At least two vaccines of nearly identical liposome base composition to our vaccines have been tested in humans. A malaria vaccine study showed that the liposomal preparation is quite safe: reaction profiles of volunteers receiving the vaccine demonstrated little reactivity and virtually no pyrogenicity (14). The concentration of MPLA in the vaccine was substantially higher (nearly 50,000 times) than the pyrogenic dose of free lipid A. The same vaccine, but different antigen (gp120, an HIV protein), was tested in volunteers and had the same lack of toxicity (27). In both studies, antibodies and cytotoxic cells specific for the respective antigens were produced. We have several subunit vaccines under development for infectious diseases (gram negative sepsis, fungal infections, protozoan infections), metabolic disorders (hypercholesterolemia, diabetic retinopathy, macular degeneration), and neoplastic diseases (multi-drug resistant cancer, primary and metastatic tumors, and angiogenic hyperproliferative disorders). In each case, one or more antigens were identified that might be useful in immunologic control of biologic proliferation (i.e., pathogen or tumor growth, rise in serum cholesterol, growth of blood vessels). We anticipate that at least one of these vaccines will be ready for testing in humans in the next calendar year.
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PMID:Liposomal vaccines. 864 17

Before 1983, septic arthritis was rare in patients with hemophilia. With the advent of human immunodeficiency virus infection in the hemophilia population, many centers noted an increasing incidence of patients with septic arthritis. Fifteen septic joints in 10 patients with severe hemophilia were documented. Eight patients were human immunodeficiency virus positive, 1 was human immunodeficiency virus negative, and 1 was not tested. The diagnosis was delayed in 5 patients because the symptoms are similar to an acute hemarthrosis. An elevated temperature was common. The white blood cell count was elevated in only 1/3 of the infections, being modified by human immunodeficiency virus infection. Associated risk factors included infected angioaccess catheters (2), pneumonia (2), and generalized sepsis (1). All but 1 joint responded to appropriate antibiotics and either repeated aspiration or arthrotomy. However, 6 patients died of acquired immunodeficiency syndrome from 2 to 109 months after infection. Three patients are alive 29, 86, and 96 months, respectively, after infection.
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PMID:Long term evaluation of septic arthritis in hemophilic patients. 865 78

The CD16 receptor (Fc gamma R-III) is found on many tissue macrophages (M phi s), but its expression on circulating monocytes is restricted to a small, phenotypically distinct subset. The number of these CD16+ monocytes may be markedly increased in response to sepsis, human immunodeficiency virus infection, or metastatic malignancy. We have recently shown that the CD16+ monocyte population is selectively expanded by administration of recombinant human macrophage colony-stimulating factor (rhM-CSF). In the current study, we used the highly rhM-CSF-responsive cynomolgus primate model to further characterize this novel monocyte population. Animals treated with rhM-CSF underwent a progressive and essentially complete conversion to the CD16+ monocyte phenotype, with up to a 50-fold increase in the number of CD16+ cells. This increase was paralleled by the emergence of a population of circulating cells that morphologically resembled large granular lymphocytes (LGLs). However, quantitatively, this population corresponded closely to the number of CD16+ monocytes, and fluorescence-activated cell sorting (FACS) confirmed that they were the same. In addition to their LGL-like morphology, many rhM-CSF-induced CD16+ monocytes showed a pattern of size, granularity, and quantitative cell surface marker expression that closely resembled the pretreatment LGL/natural killer (NK) cell population but that did not resemble the pretreatment monocyte population. However, rhM-CSF-induced CD16+ monocytes could be distinguished from LGL/ NK cells by fact that they all expressed cell surface receptors for rhM-CSF, and many of them showed reduced but detectable phagocytic and respiratory burst activity. Studies of human subjects treated with rhM-CSF also showed an analogous population of "LGL-appearing" CD16+ mononuclear cells. Thus, our studies reveal a previously unsuspected ability of cells in the monocyte lineage to adopt a phenotype similar to that of LGL/NK cells. The extent of this phenotypic convergence suggests that the two lineages retain access to elements of a similar developmental pathway.
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PMID:Recombinant human macrophage colony-stimulating factor in nonhuman primates: selective expansion of a CD16+ monocyte subset with phenotypic similarity to primate natural killer cells. 869 39

Outpatient i.v. antibiotic therapy is well developed in the United States, largely because of pressures from third-party payers to reduce costs of medical care. We have developed an outpatient i.v. antibiotic programme in Oxford, that has evolved from a desire to provide high quality i.v. therapy to AIDS patients with cytomegalovirus retinitis. We describe the rationale of the service and report on our first two years' experience. We treated 67 consecutive patients (eight with HIV infection) at home with i.v. antibiotics. This resulted in a saving of 2275 hospital days for those patients without HIV infection. HIV positive patients received 69 months of home i.v. therapy. Minor intravascular catheter complications occurred in only five patients (7.5%). The only serious complications were three episodes of catheter-related sepsis (4.5%), all occurring in AIDS patients who had lines in for more than six months. We have shown that home i.v. antibiotic therapy can be delivered safely to patients with a wide variety of infectious problems using the existing network of community nurses in the National Health Service. Essential components to the programme include a multidisciplinary team working between the hospital and community and a written shared care protocol. Such a programme can result in reduced lengths of hospital stay and patient, community nurse and physician satisfaction.
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PMID:Safe intravenous antibiotic therapy at home: experience of a UK based programme. 873 54

In order to describe the clinical features of HIV (non-AIDS), particularly injection drug use (IDU) related HIV, in patients attending the Regional Infectious Diseases Unit in Edinburgh, a prospective review utilizing the WHO staging system of the 680 HIV positive patients, 30% of whom were women and 68% were infected via IDU, was undertaken. Despite the fact that the majority of drug users and heterosexuals enrolled asymptomatic, by 1993, 71% of the patients had developed some HIV related clinical problem. The important clinical problems observed for the cohort were; minor skin problems, minor bacterial infections, major bacterial sepsis, oral thrush, oral hairy leucoplakia, significant weight loss of > 10%, HIV related thrombocytopenia and of course AIDS. Unlike previous reports from other areas, in Edinburgh drug users were not more likely than other risk groups to develop severe bacterial disease. Differences in morbidity and mortality rates by risk group but not by gender were noted but these may well be affected by the very different enrolment pattern observed in the various risk groups. The pre-AIDS mortality rates for drug users were remarkably similar to published rates from other centres.
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PMID:Clinical features of early HIV in the Edinburgh City Hospital cohort. 873 35

Perforation of the esophagus induced by tuberculosis with no evidence of HIV infection is an extremely unusual presentation of the disease. We report on a 41-year-old man presenting with an esophageal perforation who developed a sepsis syndrome characterized by multiple organ dysfunction. The perforation was covered endoscopically with a tube, the patient recovered from cardiovascular, renal and pulmonary dysfunction under intensive care treatment, including antimycobacterial therapy. In response to endoscopic and medical treatment the size of the lesion decreased and disappeared 56 days after diagnosis. The patient could be discharged 2 months after admission and remained asymptomatic after a 12 month follow-up examination.
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PMID:Sepsis syndrome induced by tuberculous perforation of the esophagus. 874 Jan 13

We report a case of rapidly progressive encephalopathy and generalized chorea due to HIV encephalitis. The patient was a 24-year-old man known to be HIV-seropositive for 4 years. The severity of the movement disorder resulted in rhabdomyolysis. Sepsis developed and he died after a 21-day hospitalization. Pathologic study revealed prominent neuronal loss and gliosis of subcortical regions. Acute encephalopathy with generalized chorea may be a rare consequence of HIV encephalitis.
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PMID:HIV encephalitis presenting with severe generalized chorea. 878 Jan 14

The incidence of peritonitis in peritoneal dialysis (PD) patients has decreased as a result of improvements in PD technology. Nevertheless, peritonitis remains a major problem in PD, with a substantial percent of patients developing persistent or relapsing infections. Current treatment guidelines emphasize the use of intraperitoneal antibiotics and once-a-day administration of aminoglycosides and provide indications for removal of the peritoneal catheter. Further clinical studies testing these guidelines are needed. In addition, guidelines for patients on PD treatment modalities other than standard continuous ambulatory peritoneal dialysis (CAPD) need to be developed. Peritonitis may lead to extensive adhesion formation, peritoneal fibrosis of varying severity, permanent loss of peritoneal ultrafiltration, severe malnutrition, sepsis, and death. Special forms of peritonitis requiring great care and further study include those caused by fungi, mycobacteria, and multiple microorganisms, and those developing in HIV-positive PD patients.
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PMID:Peritonitis in peritoneal dialysis patients: an overview. 882 3

We report a 65-year-old Japanese woman with Kaposi's sarcoma (KS). The eruption first occurred on the legs while she was admitted for treatment of poorly differentiated lung cancer. Approximately eight months after the evolution, cutaneous tumors rapidly spread to the forearms, trunk, and pharynx. At that time, the patient had received systemic corticosteroid (10-40 mg/day of prednisolone) for about three months to reduce pulmonary inflammation. The laboratory data showed anemia, lymphopenia, hypogammaglobulinemia, and a decreased T cell count, although the serological test for HIV infection was negative. The patient was treated with radiation (X-ray for KS of pharynx and electron beam for KS of lower legs) and local intralesional injection of vinblastine. Although both therapies were very effective and well tolerated, she died of bacterial pneumonia and sepsis. Autopsy revealed KS tumors, unknown before death, in both lungs, the esophagus, and the stomach. The left lung cancer had disseminated and metastasized to the right lung, pleura, mediastinum, and abdominal cavity. It is suspected that chronic respiratory distress and systemic use of corticosteroids might have induced the rapid extension of KS.
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PMID:Kaposi's sarcoma associated with lung cancer and immunosuppression. 885 91


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