TY  - JOUR
A1  - Müller, J. G.
A1  - Stahl-Hennig, Christiane
A1  - Rethwilm, Axel
A1  - Kneitz, C.
A1  - Kerkau, Thomas
A1  - Schmauser, B.
A1  - Schindler, C
A1  - Krenn, V.
A1  - terMeulen, V.
A1  - Müller-Hermelink, H.K.
T1  - Morphologische Untersuchungen von Lymphknoten und Thymusin der Frühphase der SIV-Infektion bei Rhesus-Affen
T1  - Morpholoical alterations of lymph nodes and thymus during the early course of SIV infection of rhesus monkeys
N2  - Rhesus monkeys (M. mulatta) were i. v. infected with SIV mac251. Three phases of lymph node changes were observed. 1: physiological follicular hyperplasia (3 and 6 weeks p.i.). 2: Alterations of germinal centers: loss of follicular mantle zone, fragmentation or sclerosis (12 and 24 weeks p.i.). 3: Partial depletion of T-lymphocytes, accumulation of plasma cells, increased numbers of syncytial giant cells, hemophgocytosis in the sinuses (about 1 year p.i.). The thymus of the juvenile animals showed first changes 12 and 24 weeks after infection with focalloss of immature (and Ki-67 positive) cortical thymocytes, leading to severe accidental involution of the thymuses one year after infection and reduced numbers of Hassalls corpuscles. These investigations show the value of this animal model for the study of morphology and pathogenesis of AIDS.
KW  - Affenimmundefizienzvirus
Y1  - 1991
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-47183
ER  - 
TY  - JOUR
A1  - Müller, J. G.
A1  - Krenn, V.
A1  - Schindler, C.
A1  - Czub, S.
A1  - Stahl-Henning, C.
A1  - Coulibaly, C.
A1  - Hunsmann, G.
A1  - Kneitz, C.
A1  - Kerkau, T.
A1  - Rethwilm, A.
A1  - ter Meulen, V.
A1  - Müller-Hermelink, H. K.
T1  - Alterations of Thymus Cortical Epithelium and Interdigitating Dendritic Cells but No Increase of Thymocyte Cell Death in the Early Course of Simian Immunodeficiency Virus Infection
JF  - American Journal of Pathology
N2  - The role of the thymus in the pathogenesis of simian acquired immunodeficiency syndrome was investigated in 18 juvenile rhesus monkeys (Macaca mulatta). The thymus was infected from the first week post-SIVmac inoculation, but the amount of virus-positive cells was very low « 1 in 1 04 T cells) as demonstrated by polymerase chain reaction and in situ hybridization. First morphological alteration was a narrowing of the cortex at 12 and 24 wpi. Morphometry revealed no increase of pyknotic T cells but a decrease of the proliferation rate andflow cytometry showed a reduction of the immature \(CD4^+/CD8^+\) double-positive T cells. Ultrastructural analysis revealed vacuolization, shrinkage, andfinally cytolysis of the cortical epithelial cells and the interdigitating dendritic cells. Immunofluorescence staining exhibited a widespread loss of cortical epithelial cells. This damage to the thymic microenvironment could explain the breakdown of the intrathymic T cell proliferation. It preceded fully developed simian acquired immunodeficiency syndrome and is therefore considered to play a major role in its pathogenesis.
Y1  - 1993
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-128250
VL  - 143
IS  - 3
ER  - 
TY  - JOUR
A1  - Müller, J. G.
A1  - Krenn, V.
A1  - Schindler, C.
A1  - Czub, S.
A1  - Stahl-Henning, C.
A1  - Coulibaly, C.
A1  - Hunsmann, G.
A1  - Kneitz, C.
A1  - Kerkau, Thomas
A1  - Rethwilm, Axel
A1  - terMeulen, Volker
T1  - Alterations of thymus cortical epithelium and interdigitating dendritic cells but no increase of thymocyte cell death in the early course of simian immunodeficiency virus infection
N2  - No abstract available
Y1  - 1993
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-32583
ER  - 
TY  - JOUR
A1  - Müller, J. G.
A1  - Czub, S.
A1  - Rethwilm, Axel
A1  - Müller-Hermelink, H. K.
T1  - Korrelation von Organpathologie und Verteilung virusreplizierenderZellen, nachgewiesen mit der RNA in situ Hybridisierungwährend der SIVmac-Infektion von Macaca mulatta
T1  - Correlation of Organ Pathology and Distribution of SIV detected by in situ Hybridization during SIVmac Infection of Macaca mulatta
N2  - No abstract available
N2  - 22 juvenile rhesus macaques were infected i.v. with SIVmac and killed at defined timepoints after infection. Productively infected cells were detected by RNA in situ hybridization in the paraffin material. Their number was correlated with the pathology of lymph nodes, thymus, extranodallymphatic parenchyma and other organs. In the first weeks alllymphatic tissues and compartiments got infected, as weil as the brain, the bone marrow and other organs. The high virus replication during this first phase dissappeared with the onset of the seroconversion and remained low during all stages of atrophy of the lymphatic parenchyma. The atrophy of the lymphatic parenchyma and its microenvironment was not correlated with virus replication. This may implicate that a virostatic therapy might be more succesfull in the first weeks of infection.
KW  - Virologie
Y1  - 1994
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-47331
ER  -