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Biomedical subjects

J Goudsmit

Publications and source records attributed to J Goudsmit.

At least 379 records · Page 21Linked to original sources
PubMed1986

Distinct IgG recognition patterns during progression of subclinical and clinical infection with lymphadenopathy associated virus/human T lymphotropic virus.

Longitudinal IgG recognition patterns of viral proteins were studied in 15 men who had seroconverted for lymphadenopathy associated virus/human T lymphotropic virus (LAV/HTLV-III). Antibodies to the major viral core protein p24, which is a cleavage product of the gag gene encoded precursor protein pr55, appeared first. These were soon followed by antibodies to pr55 and more gradually by antibodies to the other gag gene encoded cleavage product p18, the env gene encoded transmembrane glycoprotein gp41, the env gene encoded glycoproteins gp65 and gp110, and the putative pol gene product p33. In 13 subjects who remained healthy the reactivity to the different proteins increased or stabilised with time, while in two men who developed acquired immune deficiency syndrome (AIDS) the reactivity, most noticeably to gag encoded proteins, diminished before or at the onset of symptoms.

Acquired Immunodeficiency Syndrome↗
PubMed1986

Antibodies to the human T-cell lymphoma/leukemia virus type I in Dutch haemophiliacs.

95 Dutch haemophiliacs were tested for antibodies to membrane antigens on cells infected with human T-cell leukemia virus type I (HTLV-I-MA) by indirect immunofluorescence and to purified HTLV-I by enzyme-linked immunosorbent assay. Antibodies to HTLV-I-MA were present in 8 of 95 (8%) haemophiliacs, but only 3 (3%) had antibodies to purified HTLV-I. No clinical disease was related to HTLV-I seropositivity. The importance of iatrogenic HTLV-I transmission to haemophiliacs is discussed.

Antibodies, Viral↗
PubMed1986

Introduction of lymphadenopathy associated virus or human T lymphotropic virus (LAV/HTLV-III) into the male homosexual community in Amsterdam.

To establish when lymphadenopathy associated virus or human T lymphotropic virus (LAV/HTLV-III) was introduced into the Netherlands, we studied a cohort of homosexual men who participated in a hepatitis B vaccine efficacy study between 1980 and 1982. On entry into the study (November 1980 to December 1981) five (0.7%) out of 685 participants were found to have antibodies to LAV/HTLV-III, and during follow up 15 seroconversions were detected among the 680 who had been seronegative initially (end point attack rate 3%). LAV/HTLV-III was not transmitted by the heat inactivated hepatitis B virus (HBV) vaccine used. Anal sexual contact and antibodies to cytomegalovirus (CMV) were found to correlate with seropositivity or seroconversion for LAV/HTLV-III. Six out of 15 men who seroconverted reported a mononucleosis like illness, but three of them had other concurrent virus infections. To date, only one of the 20 seropositive men has developed the acquired immune deficiency syndrome (AIDS), three years after his seroconversion. This study shows that the introduction of LAV/HTLV-III into the Dutch male homosexual community took place at the end of the 1970s, a few years before the first case of AIDS in a native Dutchman.

Acquired Immunodeficiency Syndrome↗
PubMed1986

LAV/HTLV-III gag gene product p24 shares antigenic determinants with equine infectious anemia virus but not with visna virus or caprine arthritis encephalitis virus.

Antigenic cross-reactivity of the human acquired immunodeficiency disease syndrome virus LAV/HTLV-III with the lentiviruses visna virus, caprine arthritis encephalitis virus (CAEV), and equine infectious anemia virus (EIAV) was determined with indirect enzyme-linked immunosorbent assays, immunoblot analysis, and virus-specific polyclonal antisera. Nonreciprocal cross-reactivity was seen between the gag gene products p24 of LAV/HTLV-III and p28 of EIAV. Reciprocal cross-reactivity was seen between the gag gene product p28 of visna virus and CAEV. No cross-reactivity was detected between visna virus (or CAEV) and EIAV (or LAV/HTLV-III). This suggests a closer relationship of LAV/HTLV-III with EIAV than with visna virus or CAEV.

Acquired Immunodeficiency Syndrome↗
PubMed1986

Neurologic manifestations of human immunodeficiency virus infection in children.

This report describes the neurologic manifestations of 36 children with human immunodeficiency virus (HIV) infection. In this cohort, in 16 of 21 children with acquired immunodeficiency syndrome (AIDS), three of 12 children with AIDS-related complex, and one of three asymptomatic seropositive children, a progressive encephalopathy developed. Neurologic signs were often detected early but tended to worsen coincident with progression of the immunodeficiency. The presence of progressive encephalopathy correlated with the absence of serum neutralizing antibodies to HIV and with a poor, usually fatal, outcome. The incubation period from initial HIV infection in the perinatal period to the onset of progressive encephalopathy varied from 2 months to 5 years. Intrablood-brain barrier synthesis of HIV-specific antibodies was demonstrated in eight of 14 children with AIDS and AIDS-related complex, indicating active brain infection with HIV. In three cases this was unassociated with progressive neurologic signs. Unique neuropathologic findings in children who died with HIV infection further suggest that the progressive encephalopathy is the result of primary and persistent infection of the brain with this retrovirus. These findings broaden the spectrum of HIV infection in children and have important implications for the development of antiviral therapy.

Acquired Immunodeficiency Syndrome↗
PubMed1986

Post-encephalitic epilepsy and arbovirus infections in an isolated rainforest area of central Liberia.

Among a population of 4.436 Bassa, Kpelle and Mano people in the Gbawein and Wroughbarh Clan region of Grand Bassa Country, Liberia, 123 cases of epilepsy could be documented. In 38% of these cases infections involving the central nervous system precipitated the onset of seizures. Sera from 67 epilepsy patients, 50 direct healthy relatives and 22 geographically matched controls were tested for antibodies to 16 arboviruses of the Togaviridae and Bunyaviridae known to occur in Africa. Antibodies to arboviruses were found in 16.5% of the epilepsy patients, 36% of the mostly older family members, and in 22% of the controls. Males and females were equally affected as were the different clans and language groups. Although meningoencephalitis with sequelae, like seizures, are known to result from arbovirus infections, no evidence for a correlation between epilepsy in this are of Central Liberia and previous arbovirus infection could be established.

Adolescent↗
PubMed1986

Hemorrhagic fever virus infections in an isolated rainforest area of central Liberia. Limitations of the indirect immunofluorescence slide test for antibody screening in Africa.

Serum samples from 119 healthy individuals and 106 epilepsy patients inhabiting Grand Bassa County, Liberia, were tested for antibodies to hemorrhagic fever viruses (HFV) by indirect immunofluorescence. E6 Vero cells infected with Lassa fever virus (LAS), Rift Valley Fever virus (RVF), Congo Hemorrhagic Fever virus (CON), Marburg virus (MBG) and the Ebola (EBO) virus strains Mayinga (May) and Boniface (Bon) were used as antigen. To obtain reproducible and specific test results sera had to be absorbed extensively with uninfected E6 Vero cells, tested for reactivity to both virus infected and uninfected E6 Vero cells and read "blindly" by two independent observers. Antibodies to EBO were shown to be highly prevalent (13.4%) in the population of this rainforest area, while prevalences of antibodies to LAS (1.3%), RVF (0.4%) and MBG (1.3%) were much lower. No correlation between past HFV infection and post-encephalitic epilepsy or other reported febrile illnesses could be established.

Adolescent↗
PubMed1985

The 200- and 150-kDa neurofilament proteins react with IgG autoantibodies from patients with kuru, Creutzfeldt-Jakob disease, and other neurologic diseases.

Sera from 65 patients with spongiform virus encephalopathies (29 with kuru, 36 with Creutzfeldt-Jakob disease), 79 with other neurologic diseases, and 65 control subjects were examined for reactivity in immunoblots of preparations of myelinated axons and neurofilaments from mouse brain. The sera reacted most frequently with the 200-kDa and 150-kDa neurofilament proteins and less frequently with the 70-kDa neurofilament protein and a 62-kDa neurofilament-associated protein. The sera reacted with the same proteins as those which reacted with rabbit and mouse polyclonal antibodies and mouse monoclonal antibody to neurofilament proteins. Serum reactions were also seen with Trixon X-100 extracts of chimpanzee brain and bovine spinal cord but not with Triton extracts of liver, kidney, and muscle.

Alzheimer Disease↗
PubMed1985

Immunoglobulin subclasses of antibodies to human T-cell leukemia/lymphoma virus I-associated antigens in acquired immune deficiency syndrome and lymphadenopathy syndrome.

Immunoglobulin G (IgG) and IgM antibodies to human T-cell leukemia/lymphoma virus-I (HTLV-I)-associated membrane antigens (HTLV-I-MA) were assayed by indirect cytospin immunofluorescence, and IgG and IgM antibodies to purified HTLV-I were assayed by enzyme-linked immunosorbent assay in sera from 119 immunologically well-characterized promiscuous male homosexuals in The Netherlands, of whom 9 suffered from acquired immune deficiency syndrome (AIDS), 18 suffered from lymphadenopathy syndrome (LAS), and 5 suffered from gay bowel syndrome. Antibodies to HTLV-I-MA were present in four of nine AIDS patients, including one patient with antibodies to purified HTLV-I. Antibodies to HTLV-I-MA were present in 6 of 18 LAS patients, including 3 patients with antibodies to purified HTLV-I. Of five patients with gay bowel syndrome, one had IgG and IgM antibodies to HTLV-I-MA. Of the four HTLV-I seropositive AIDS patients, two had IgG and IgM antibodies to HTLV-I or HTLV-I-MA, one had only IgG antibodies, and one had only IgM antibodies. Of the six HTLV-I seropositive LAS patients, four had IgG and IgM antibodies to HTLV-I or HTLV-I-MA, and two had only IgM antibodies. In the sera from 27 healthy homosexuals with and 60 without T-cell subset imbalances, no antibodies to HTLV-I or HTLV-I-MA were detected.

Acquired Immunodeficiency Syndrome↗
PubMed1984

Infections with the hepatitis B virus associated delta agent in an isolated West-African community.

The occurrence of delta agent (delta) infection in the native population of the isolated Gbawein and Wroughbarh Clan region of Grand Bassa County, Liberia was studied. Sera of 97 patients with epilepsy, 73 non-epileptic relatives, and 31 non-epileptic control subjects were tested for hepatitis B surface antigen (HBsAg), antibody to hepatitis B surface antigen (anti-HBs) and antibody to delta antigen (anti-delta). Of the 201 individuals tested 76 (37.8%) were HBsAg positive; the overall infection rate (HBsAg and anti-HBs positives) was 68.7%. No correlation with clinical disease could be established. Markers of delta infection were detected in seven index cases. All subjects with anti-delta were HBsAg positive except one, who was anti-HBs positive with a low titre of anti-delta (less than 1:10(2)), which is indicative of a recent delta infection. Mothers of six delta infected index cases were available for testing, one was found HBsAg and anti-delta positive, while the other five were anti-HBs positive and anti-delta negative. No delta infections occurred in children of HBV negative mothers. Presence of delta markers varied significantly (P less than 0.02) among HBsAg carriers of the Kpelle (18%) and the Bassa (2%) language group. A comparable difference in delta markers was observed among HBsAg carriers of the Gbawein (17%) and the Wroughbarh (4%) clans.

Adolescent↗