Background: Tuberculosis is one of the major causes of morbidity and mortality. Adenosine Deaminase (ADA) is an enzyme required for the conversion of adenosine to inosine through purine salvage pathway.The study was conducted to achieve following objectives:(1) To estimate Adenosine Deaminase (ADA) activity in pleural fluid and serum of tuberculous patients and determine its sensitivity and spe...

tuberculosis pericarditis as a potentially fatal complication of tuberculosis requires effective diagnosis and treatment. we evaluated the efficacy of interferon-gamma (ifn-gamma) and adenosine deaminase (ada) for diagnosing tuberculosis pericarditis in a cohort of iranian patients presenting with pericarditis. we enrolled 38 patients with presentation of pericarditis. all patients underwent di...

Adenosine deaminase (ADA) deficiency results in the accumulation of toxic metabolites that destroy the immune system, causing severe combined immunodeficiency (ADA-SCID), often referred to as the "bubble boy" disease. Strimvelis is a European Medicines Agency approved gene therapy for ADA-SCID patients without a suitable bone marrow donor.

In human tissues, adenosine deaminase (ADA) (adenosine aminohydrolase; EC 3.5.4.4) activity can be separated by gel electrophoresis into several isozymes. A structural gene (ADA) on chromosome 20 codes for the "erythrocyte" isozyme, ADA-1, which is also expressed in some nonerythroid tissues. Nonerythroid cells also differentially express five ADA "tissue isozymes" of a greater molecular weight...

Extracellular levels of adenosine increase during hypoxia. While acute increases in adenosine are important to counterbalance excessive inflammation or vascular leakage, chronically elevated adenosine levels may be toxic. Thus, we reasoned that clearance mechanisms might exist to offset deleterious influences of chronically elevated adenosine. Guided by microarray results revealing induction of...

Adenosine is a signaling nucleoside that has been suggested to play a role in asthma in part through its ability to influence mediator release from mast cells. Adenosine levels are elevated in the lungs of asthmatics, further implicating this molecule in the regulation of lung inflammation and suggesting that animal models exhibiting endogenous increases in adenosine will be useful for the anal...

The rise in adenosine deaminase (ADA) activity in the pleural fluid of tuberculous pleurisy patients, though used for diagnosis, is of unknown origin. In this work, we determined ADA activity and the activities of 2'-deoxyadenosine deaminase and ADA-2 in 350 patients. We also considered whether the results throw light on the origin of high pleural fluid ADA in tuberculous pleurisy and estimated...

Context: Tuberculosis remains one of the world’s deadliest diseases & tubercular meningitis is one of the most deadly complications due to missed diagnosis and delayed Treatment and result in significant morbidity and mortality. The signs and symptoms, results of routine analysis of CSF and radiographic findings for patients with CNS tuberculosis are often inadequate in making a definitive diag...

Adenosine deaminase (ADA), a protein whose deficit leads to severe combined immunodeficiency, binds to the cell surface by means of either CD26, A(1) adenosine receptors, or A(2B) adenosine receptors. The physiological role of these interactions is not well understood. Our results show that by a 3-fold reduction in the EC(50) for the antigen, ADA potentiated T cell proliferation in autologous c...

Tuberculosis is a global health problem whose morbidity and mortality is increasing, as one-third of the world population is estimated to be infected with Mycobacterium tuberculosis and eight million new active cases occur annually commonest being pulmonary tuberculosis and is often associated with effusion. Delay in diagnosis and treatment results in poor prognosis. Adenosine deaminase estimat...