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Query: UMLS:C0021051 (immunodeficiency)
 71,517 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Histologic, immunohistologic and electron microscopic findings in three children with primary immunodeficiencies are reported. Classical X-linked infantile agammaglobulinemia Bruton was present in case 1 (male, aged 16 years), selective cellular immunodeficiency with thrombopenia in case 2 (male, aged 2 1/2 years) and non-lymphopenic severe combined immunodeficiency in case 3 (male, aged 1 3/4 years). At autopsy, all three cases exhibited unusual types of pneumonia. In case 2 a generalized cytomegalovirus infection was present. Case 3 disclosed panmyelopathia and chronic liver lesions due to severe GvH-reaction subsequent to bone marrow transplantation. A detailed morphologic study of the immune system revealed distinct alterations in the thymus, spleen, and lymph nodes and the lymphatic tissues of the gastrointestinal tract characteristic of an immunodeficiency state, either humoral (case 1), cellular (case 2) or combined (case 3).
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PMID:Pathomorphology of humoral, cellular and combined primary immunodeficiencies. 19 90

Among 40 hospitalized infants and children with cytomegalovirus infection, 14 (35%) had interstitial pneumonitis, 4 (10%) had wheezing or tachypnoea but without x-ray evidence of classical interstitial pneumonia, the remaining 22 (55%) were free of pulmonary involvement. Most patients had tachypnoea and nonproductive cough of varying durations: those with underlying pulmonary pathology tended to have persistent and prolonged respiratory symptoms. Mortality and severity of the lung disease were related to the underlying immunodeficiency or concomitant pulmonary process.
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PMID:Pulmonary involvement with cytomegalovirus infections in children. 19 40

An adult with the late onset immunodeficiency syndrome developed intractable diarrhea. Widespread cytomegalovirus (CMV) infection of the gastrointestinal tract was detected antemortem with detailed morphological studies and viral culture. The CMV-type cells were especially numerous in his severely ulcerated colon. Electron microscopy of infected cells in rectal biopsy material revealed the characteristic features of CMV infection. It is likely that the CMV infection contributed to the symptom complex and the mucosal injury. Unusual opportunistic infections as a cause of diarrhea should be considered in patients with late onset immunodefociency, especially if Giardiasis is ruled out.
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PMID:Cytomegalovirus infection of the gastrointestinal tract in a patient with late onset immunodeficiency syndrome. 19 23

In the autopsy materials of 1972-1976, cytomegaly was diagnosed in 47 infants dying in the first year of life; two of them were found to have cytomegalovirusinvolvement of the thymus. The clinical course of the disease depended on the intensity of pathological lesions in organs and tissues associated with secondary infection. In the thymus, alongside with marked accidental involution, cytomegaloviral metamorphosis of the reticular epithelium and epithelium of Hassal bodies was found. Foci of calcinosis were observed in the parenchyma of the thymus. During the disease hypogammaglobulinemia was observed. A possible role of cytomegalovirus infection in the development of acquired immunodeficiency conditions in infants under one is suggested.
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PMID:[Lesion of the thymus gland in infants caused by cytomegalovirus]. 21 Jul 39

Thirty-five renal allograft recipients were studied concerning the relationship between cytomegalovirus (CMV), herpes simplex virus (HSV), and opportunistic bacterial and fungal infections. The incidence of opportunistic infections was determined for patients whose tests prior to transplantation were seronegative in complement fixation and indirect hemagglutination assays of CMV antibody and for those patients whose tests were seropositive. Among the six seronegative patients with seronegative tests, four (66%) experienced active CMV infection within two months, and four died of Candida or Aspergillus infection within six months after transplantation. Among the 22 patients with seropositive tests, only one (4%) had a fungal infection and it was nonfatal (P less than .05). The increased morbidity and mortality due to fungal and bacterial infections in transplant recipients with seronegative CMV tests appears, therefore, to be related to primary CMV infection rather than to generalized immunodeficiency.
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PMID:Primary cytomegalovirus and opportunistic infections. Incidence in renal transplant recipients. 21 20

The diagnoses which may be arrived at by examination of peroral small bowel mucosal biopsy specimens are presented. Celiac sprue, unclassified sprue (refractory sprue), infectious gastroenterititis, stasis syndrome and kwashiorkor have a severe mucosal lesion. Other clinical conditions are required to establish the diagnosis in these diseases. A number of diseases have specific diagnostic features. Included are Whipple's disease, abetalipoproteinemia, collagenous sprue, primary intestinal lymphoma, eosinophilic gastroenteritis, giardiasis, coccidiosis, strongyloidiasis, lymphangiectasis and the intestinal immunodeficiency diseases. Mucosal abnormalities may be present in other diseases but the diagnoses are usually made on other criteria than small bowel biopsy. These include vitamin B12 or folic acid deficiency, Crohn's disease, gastrinoma, acrodermatitis enteropathica, amyloidosis, chronic granulomatous disease, lipid storage diseases, histoplasmosis, capillariasis, cytomegalovirus infection, schistosomiasis and macroglobulinemia.
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PMID:Histologic diagnosis of diseases of malabsorption. 51 56

Study objectives were to characterize the clinical syndrome of chronic idiopathic esophageal ulceration in patients with acquired immunodeficiency syndrome (AIDS), to determine the extent of local human immunodeficiency virus (HIV) infection, and to evaluate the effect of corticosteroid therapy upon symptoms and healing. Twelve AIDS patients with chronic esophageal ulcers whose etiology remained unknown after clinical evaluation were the subjects. All patients complained of severe odynophagia, chest pain, and weight loss. Barium radiography and endoscopy demonstrated large, undermined ulcers with severe acute inflammation. No evidence of herpes simplex viruses I or II, cytomegalovirus, fungi, or tumors were found histologically. Evidence of HIV was found in all ulcers using a combination of RNA in situ hybridization, immunohistochemistry, and quantitative antigen capture enzyme-linked immunosorbent assay of tissue homogenates. Steroid therapy by the oral or intravenous routes or by direct intralesional injection resulted in pain relief, weight gain in 10 patients, and ulcer healing in five patients. A characteristic clinical syndrome of chronic idiopathic esophageal ulceration may occur in patients with AIDS, related to local HIV infection in the esophagus. Corticosteroids relieve symptoms and may promote healing of the ulcer.
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PMID:Chronic idiopathic esophageal ulceration in the acquired immunodeficiency syndrome. Characterization and treatment with corticosteroids. 129 32

Patients undergoing bronchoscopy for possible pneumocystis pneumonia were studied retrospectively to characterize the impact of common viral pathogens on the course of advanced human immunodeficiency virus (HIV) disease and atypical pneumonia. In 327 episodes, Pneumocystis carinii was found in 220 (67%), cytomegalovirus (CMV) in 145 (44%), and herpes simplex virus in 16 (5%). Early deterioration in oxygenation and use of intensive care was less common in CMV-positive patients. Neither CMV nor P. carinii was a predictor of mortality in multivariate analyses. CMV was not associated with an increased prevalence of later CMV disease. Isolation of CMV from the bronchoalveolar lavage fluid of these patients was not an indication for antiviral therapy. Pulmonary shedding of CMV may be associated with a decreased inflammatory response to P. carinii. The outcome of HIV-associated atypical pneumonia where no clear pulmonary pathogen is found on routine evaluation was no better than that of treated P. carinii pneumonia.
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PMID:Impact of Pneumocystis carinii and cytomegalovirus on the course and outcome of atypical pneumonia in advanced human immunodeficiency virus disease. 130 75

Transient gene expression studies have indicated that human cytomegalovirus (HCMV) specifically transactivates the human immunodeficiency virus (HIV) long terminal repeat (LTR). We show here, by a specific mutational analysis, that only the TATA box region is obligatory for transactivation of the HIV-1 LTR by HCMV. Similarly, this element is also sufficient for transactivation by either the HCMV 72-kDa major immediate-early 1 (IE1) or 80-kDa IE2 gene product independently. However, deletion of a 10-bp region from the minimal responsive element, 5' to the TATA box, dramatically reduced the level of HCMV 72-kDa IE1 or 80-kDa IE2 transactivation, indicating a crucial role for this element in transactivation. Whereas inclusion of the TAR element or Sp1 sites on this 10-bp-deleted minimal promoter had no effect on the removal of IE1 transactivation, TAR and Sp1 elements did compensate for the 10-bp element in transactivation by IE2 and HCMV. Consequently, the sequence requirements of the HIV-1 LTR for transactivation by HCMV can be reproduced by these IE1 and IE2 gene products of HCMV.
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PMID:A 10-base-pair element of the human immunodeficiency virus type 1 long terminal repeat (LTR) is an absolute requirement for transactivation by the human cytomegalovirus 72-kilodalton IE1 protein but can be compensated for by other LTR regions in transactivation by the 80-kilodalton IE2 protein. 131 Jul 65

Human herpesvirus 6 (HHV-6) is a lymphotropic herpesvirus, and in vitro, HHV-6 can productively infect many of the same cell types as can human immunodeficiency virus (HIV). Coinfection by both viruses in vitro can lead to both activation of the HIV promoter and acceleration of cytopathic effects. We have previously demonstrated that a large, 22.25-kb cloned HHV-6 fragment, pZVB70, can trans activate HIV promoter expression in vitro. In this study, we show that the pZVB70 fragment can trans activate the HIV promoter in human T-cell lines as well as in the monkey kidney cell line CV-1. The pZVB70 insert was digested with various restriction enzymes, and individual fragments were transfected into cells to test for their ability to trans activate the HIV promoter. By this method, we have identified a 1.8-kb subfragment, B701, that is involved in trans activation. Sequence analyses show that B701 potentially encodes a 143-amino-acid protein. This protein shares no homology with other herpesvirus proteins, such as ICP0 and ICP4, that have been shown to trans activate the HIV promoter. However, it shows weak sequence homology with the gene products encoded by the cytomegalovirus early US22 gene family, suggesting that the putative B701 protein may be an HHV-6 early regulatory protein. The 143-amino-acid coding sequence of B701 was cloned by polymerase chain reaction, and transfection of this construct into cells activated HIV promoter expression. The target site on the HIV promoter for the putative B701 protein is mapped to the NF-kappa B binding site. Our results suggest that the putative B701 protein may function by directly binding to the NF-kappa B site or may involve cellular factors, such as NF-kappa B, either directly or indirectly.
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PMID:Identification and characterization of a human herpesvirus 6 gene segment that trans activates the human immunodeficiency virus type 1 promoter. 131 Jul 66


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