Publications by authors named "Ashok K Janmeja"

Chronic obstructive pulmonary disease (COPD) is one of the top three causes of mortality worldwide. Vitamin D deficiency in COPD has been associated with poor lung function and decreased muscle power, which further increases the risk of exacerbations. The role of vitamin D in preventing acute exacerbations of COPD has conflicting results in the literature.

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Context: Spirometry is an important tool to monitor treatment response in diseases such as chronic obstructive pulmonary disease and asthma. However, there is lack of evidence to support its application to evaluate response to chemotherapy in advanced lung cancer. It might be a useful adjunct to the imaging-based response evaluation which lacks functional assessment of lungs.

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Interleukin-6 (IL6) is encoded by the gene in human and acts as pro-inflammatory cytokine and an anti-inflammatory cytokine. Recent studies established that substantially contribute in the diagnosed of systemic inflammation for the patients suffering from lung diseases such as chronic obstructive pulmonary disease (COPD). Thereof, this work aimed to investigate the protagonist of (-174 G/C) genotypes as an essential risk factor for COPD in north Indian population.

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Although a simple and useful pulmonary function test, spirometry remains underutilized in India. The Indian Chest Society and National College of Chest Physicians (India) jointly supported an expert group to provide recommendations for spirometry in India. Based on a scientific grading of available published evidence, as well as other international recommendations, we propose a consensus statement for planning, performing and interpreting spirometry in a systematic manner across all levels of healthcare in India.

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Background: The clinical trials conducted at Chingleput India suggest that BCG fails to protect against tuberculosis (TB) in TB-endemic population. Recent studies advocate that non-tuberculous mycobacteria and latent Mycobacterium tuberculosis (Mtb) infection interferes in the antigen processing and presentation of BCG in inducing protective immunity against Mtb. Thereby, indicating that any vaccine that require extensive antigen processing may not be efficacious in TB-endemic zones.

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Mycobacterium tuberculosis instigates interactions with host factors to promote its survival within the host inimical conditions. Among such factors, nuclear receptors (NRs) seem to be promising candidates owing to their role in bacterial pathogenesis. However, only few members of NR superfamily have been implicated in M.

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Article Synopsis
  • Mycobacterium tuberculosis causes tuberculosis and develops drug resistance within macrophages due to stress from the host's immune response.
  • The study reveals that xenobiotic nuclear receptors, particularly the pregnane X receptor (PXR), affect drug-efflux transporters in macrophages, leading to nonresponsiveness to the anti-TB drug rifampicin.
  • Using a mouse model, the research demonstrates that blocking PXR with the antagonist ketoconazole can restore the effectiveness of rifampicin, suggesting alternative treatments like rifapentine and rifabutin could be better options for patients facing drug resistance.
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Background: The current BCG vaccine induces only short-term protection against Mycobacterium tuberculosis (Mtb), suggesting its failure to generate long-lasting memory T cells. Previously, we have demonstrated that a self-adjuvanting peptide of Mtb (L91), successfully generated enduring memory Th1 cells. Consequently, we investigated if L91 was able to recuperate BCG potency in perpetuating the generation of memory T cells and protection against Mtb infected mice.

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Tuberculosis (TB) and leprosy are two age-old infections, which we are facing even today. With drug-resistant TB on the rise, we report a case of multidrug-resistant TB with leprosy, which has never been reported previously. The peculiar course of this case forces us to rethink about the upcoming challenges due to their cooccurrence.

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Lactobacilli are normal commensals of the gastrointestinal and female genital tract. Due to its low virulence these bacteria are known to cause opportunistic infections. They cause mostly bacteraemia with or without endocarditis and rarely cause pleuro-pulmonary infection.

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Tuberculosis continues to be one of the most devastating global health problem. Its diagnosis will benefit in timely initiation of the treatment, cure and therefore reduction in the transmission of the disease. Tests are available, but none can be comprehensively relied on for its diagnosis; especially in TB-endemic zones.

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Chilaiditi sign is the peculiar radiographic presentation of interposition of colon between diaphragm and liver. When associated with symptomatology, it is called as chilaiditi's syndrome. Though rare, respiratory symptoms may be present.

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Article Synopsis
  • - This study explores how *Mycobacterium tuberculosis* (M. tuberculosis) can evade the immune system, focusing on the role of the human nuclear receptor pregnane X receptor (PXR) in its survival in macrophages.
  • - Researchers found that PXR enhances M. tuberculosis survival by promoting foamy macrophage formation and preventing important immune processes like phagolysosomal fusion, inflammation, and apoptosis.
  • - Using a mouse model that expresses human PXR, the study suggests that targeting hPXR with pharmacological treatments could be a potential new strategy for tuberculosis therapy.
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Interstitial lung diseases (ILDs) presenting as lung cancer have been reported rarely from India. The present case describes a possibly primary lung cancer in a non-smoker who presented radiologically as a case of ILD. The possible mechanisms available in the literature are discussed.

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Article Synopsis
  • Tuberculosis (TB) still claims 1.5 million lives each year, despite available treatments, due to issues like drug resistance and side effects from long-term therapy.
  • A new therapeutic method is proposed, called D-L91, which combines traditional TB drugs with an immunotherapy called L91 to enhance the immune response against the bacterium that causes TB.
  • Animal studies show that D-L91 notably reduces TB bacterial load and improves immune cell function, suggesting it could eventually lead to more effective, shorter treatments for TB patients.
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Pulmonary nocardiosis is a rising bacterial infection, with a high propensity for misdiagnosis. On account of a paucity of prospective studies, there is limited understanding on various aspects of its diagnosis and treatment. We present three patients with pulmonary nocardiosis, with emphasis on the predisposing factors, variable disease course, and treatment issues.

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Background: 'Retreatment' for tuberculosis (TB) has long been a neglected area in global TB control India. However India disproportionately accounts for nearly half of retreatment TB cases notified globally. Sex differences vary in different age groups and in different parts of the world.

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Uncontrolled diabetes mellitus is associated with a variety of infections which pose management difficulties. Herein, we report a case of diabetic patient who developed combined pulmonary tuberculosis and mucormycosis. The case illustrates management of this rare co-infection which despite being potentially fatal was treated successfully.

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Introduction: More re-treatment TB patients are notified in India than any other country in the world, and default among this group is a serious public health problem. Adherence to the long course of TB treatment is a complex, dynamic phenomenon with a wide range of factors impacting on treatment taking behaviour. The main aim of the study was to study the basic clinical and demographic profile of the defaulters and the reasons for discontinuation of treatment among these retreatment patients in category II of RNTCP.

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Background: Pulmonary rehabilitation (PR) is an evidence-based intervention in patients with chronic obstructive pulmonary disease (COPD) which improves the exercise capacity and quality of life (QoL).

Methods: We studied 60 patients after an episode of acute exacerbation of COPD (AECOPD). They were randomised to receive conventional treatment without pulmonary rehabilitation (CTWPR) (n=30) or, standard treatment plus a 12-week post-exacerbation pulmonary rehabilitation (PEPR) programme in addition.

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Background: Several studies have demonstrated considerable impairment of quality of life (QOL) in obstructive sleep apnea (OSA) patients, but its relation with severity of OSA is yet unclear.

Study Objectives: To investigate the effects of OSA on the QOL and its association with the disease severity.

Design And Setting: Observational, prospective case-control study.

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Idiopathic Pulmonary Hemosiderosis (IPH) is characterized by the triad of iron deficiency anemia, pulmonary infiltrates and haemoptysis with no recognizable cause. Since the first description of its association with Celiac Disease (CD) by Lane and Hamilton in 1971, only a few isolated cases have been reported in literature. Although it has been considered an uncommon association of two disease entities, recent reports indicate that prevalence of celiac disease is as high as one percent.

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