Detection of Mycoplasma fermentans DNA from lymph nodes of acquired immunodeficiency syndrome patients

1994 ◽  
Vol 17 (2) ◽  
pp. 131-135 ◽  
Author(s):  
Yuko Sasaki ◽  
Mitsuo Honda ◽  
Makoto Naitou ◽  
Tsuguo Sasaki
Keyword(s):  
Lymph Nodes ◽  
Acquired Immunodeficiency Syndrome ◽  
Mycoplasma Fermentans ◽  
Acquired Immunodeficiency ◽  
Immunodeficiency Syndrome

scholarly journals Mutation and protein expression of p53 in acquired immunodeficiency syndrome-related lymphomas

Blood ◽  
1993 ◽  
Vol 82 (3) ◽  
pp. 920-926
Author(s):  
H Nakamura ◽  
JW Said ◽  
CW Miller ◽  
HP Koeffler
Keyword(s):  
Lymph Nodes ◽  
Acquired Immunodeficiency Syndrome ◽  
Immunohistochemical Staining ◽  
Mutational Analysis ◽  
Direct Sequencing ◽  
P53 Protein ◽  
Aggressive Lymphoma ◽  
P53 Mutations ◽  
Acquired Immunodeficiency ◽  
Immunodeficiency Syndrome

p53 mutations are found in a variety of neoplasia. B-immunoblastic lymphoma (BIBL) is a rapidly progressive, aggressive lymphoma. As patients with acquired immunodeficiency syndrome (AIDS) live longer, BIBL is becoming an increasing problem. We asked three questions in our study. What is the frequency of p53 mutations in BIBL? Is it more frequent in patients with AIDS? Can immunohistochemical staining of lymph nodes for expression of p53 substitute for mutational analysis of p53 to detect lymphomas with mutated p53? Exons 5, 6, 7, 8 of the p53 gene (hot-spots for mutations) were amplified and examined for mutations by single-strand conformation polymorphism (SSCP) analysis. Altered migration was observed in 7 of 52 BIBL samples. Of these, 4 of 25 were from individuals infected with human immunodeficiency virus (HIV) and 3 of 27 were not infected with HIV. Direct sequencing of amplified material confirmed the presence of mutations in exons 5, 7, 8 of p53. A total of 26 BIBL as well as other lymphoma/leukemia samples, stained strongly by immunohistochemistry with three antibodies directed against human p53. Five of 6 BIBL samples with p53 mutations stained strongly for p53, but 20 lymphoma samples with no detectable p53 mutations also stained strongly for p53. Of note, however, 10 hyperplastic, nonmalignant lymph nodes from individuals either infected or not infected with HIV had negligible staining for p53 protein. In conclusion, p53 mutations occur in about 14% BIBL samples; the frequency of p53 mutations in BIBL in individuals with and without AIDS was similar. Positive p53 immunohistochemistry did not correlate with detectable p53 mutations in the same tissue, but positive immunohistochemical staining for p53 was only found in neoplastic lymph nodes. This latter finding provides a strong warning that p53 immunochemistry with available reagents cannot be used to determine which tumors have mutations of p53.

scholarly journals Sonographic detection of abdominal pathologies in human immunodeficiency virus/acquired immunodeficiency syndrome patients and its correlation with CD4 counts – A prospective analysis

2020 ◽  
Vol 0 ◽  
pp. 1-8
Author(s):  
Tejas Kanthrao Mankeshwar ◽  
Ashok Kumar Sharma
Keyword(s):  
Human Immunodeficiency Virus ◽  
Lymph Nodes ◽  
Acquired Immunodeficiency Syndrome ◽  
Cd4 Count ◽  
Aids Patients ◽  
Cd4 Counts ◽  
Immunodeficiency Virus ◽  
Acquired Immunodeficiency ◽  
Immunodeficiency Syndrome ◽  
Hiv Aids

Objectives: Abdominal pathologies are the second most common after pulmonary diseases in human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) patients. Ultrasonography (USG) is a vital imaging technique for the evaluation of abdominal pathologies. This study was aimed at evaluating the abdominal pathologies using USG in HIV/AIDS and further analysis of its correlation with CD4 count. Material and Methods: The present study was carried out on 392 HIV-positive patients with abnormal abdominal sonographic findings. All data were analyzed by Chi-square test and one-way analysis of variance using SPSS 16.0 software. Results: Of these 392 patients, 66.3% were males, the mean age was 35.7 years, (range 7–64 years) and most of them were in 4th decade. On ultrasonographic evaluation, spleen was involved in 45.2% patients and liver as well as lymph nodes each was involved in 43.6% patients. Other cases displayed ascites and bowel thickening in 5.3% and 3.8% patients, respectively. Less involvement of kidney (2.3%), pancreas (1.5%), and biliary system (1.3%) was observed. In addition, pathologies such as hepatomegaly, splenomegaly, splenic microabscess, focal pancreatic lesion, mesenteric, and periportal lymphadenopathy showed significant correlation with CD4 counts. Lymphoma was found in 1% of patients, involving liver, pancreas, and retroperitoneal lymph nodes. Conclusion: Our study highlights the clinical utility of abdominal USG in HIV/AIDS patients. CD4 counts largely affect the differential diagnosis in HIV/AIDS patients. USG findings interpreted in the context of CD4 count may help in guiding the exact diagnosis.

Mutation and protein expression of p53 in acquired immunodeficiency syndrome-related lymphomas

Blood ◽  
1993 ◽  
Vol 82 (3) ◽  
pp. 920-926 ◽  
Author(s):  
H Nakamura ◽  
JW Said ◽  
CW Miller ◽  
HP Koeffler
Keyword(s):  
Lymph Nodes ◽  
Acquired Immunodeficiency Syndrome ◽  
Immunohistochemical Staining ◽  
Mutational Analysis ◽  
Direct Sequencing ◽  
P53 Protein ◽  
Aggressive Lymphoma ◽  
P53 Mutations ◽  
Acquired Immunodeficiency ◽  
Immunodeficiency Syndrome

Abstract p53 mutations are found in a variety of neoplasia. B-immunoblastic lymphoma (BIBL) is a rapidly progressive, aggressive lymphoma. As patients with acquired immunodeficiency syndrome (AIDS) live longer, BIBL is becoming an increasing problem. We asked three questions in our study. What is the frequency of p53 mutations in BIBL? Is it more frequent in patients with AIDS? Can immunohistochemical staining of lymph nodes for expression of p53 substitute for mutational analysis of p53 to detect lymphomas with mutated p53? Exons 5, 6, 7, 8 of the p53 gene (hot-spots for mutations) were amplified and examined for mutations by single-strand conformation polymorphism (SSCP) analysis. Altered migration was observed in 7 of 52 BIBL samples. Of these, 4 of 25 were from individuals infected with human immunodeficiency virus (HIV) and 3 of 27 were not infected with HIV. Direct sequencing of amplified material confirmed the presence of mutations in exons 5, 7, 8 of p53. A total of 26 BIBL as well as other lymphoma/leukemia samples, stained strongly by immunohistochemistry with three antibodies directed against human p53. Five of 6 BIBL samples with p53 mutations stained strongly for p53, but 20 lymphoma samples with no detectable p53 mutations also stained strongly for p53. Of note, however, 10 hyperplastic, nonmalignant lymph nodes from individuals either infected or not infected with HIV had negligible staining for p53 protein. In conclusion, p53 mutations occur in about 14% BIBL samples; the frequency of p53 mutations in BIBL in individuals with and without AIDS was similar. Positive p53 immunohistochemistry did not correlate with detectable p53 mutations in the same tissue, but positive immunohistochemical staining for p53 was only found in neoplastic lymph nodes. This latter finding provides a strong warning that p53 immunochemistry with available reagents cannot be used to determine which tumors have mutations of p53.

Sign in / Sign up

Export Citation Format

Share Document