Bronchial Asthma: Human Studies

• Decreased sodium-potassium and calcium adenosine triphosphatase activity in asthma: modulation by inhaled and oral corticosteroids.
• Increased intracellular calcium and decreased activity of leukocyte sodium-potassium and calcium adenosine triphosphatase in asthma
• Prednisolone hastens recovery from histamine-induced bronchospasm in asthmatics. J Asthma
• Increased oxidative stress and altered levels of antioxidants in asthma
• Increased oxidative stress in acute exacerbations of asthma.
• Evaluative and discriminative properties of an instrument, VACCQ, to measure control of asthma
• Predictors of emergency department use in asthmatics
• Factors affecting attainment of control in asthma
• Autonomic modulation in asthma
• Comparative evaluation of quality of life, dyspnoea and lung function abnormalities in asthma and chronic obstructive pulmonary disease

Bronchial Asthma: Studies in Animal Models

• Relationship between intracellular calcium and airway reactivity in guinea pigs
• Effects of Vitamin E on Airway Responses and Biochemical Parameters in Guinea Pigs Sensitized to Ovalbumin.
• Effect of sensitization on membrane ion fluxes and intracellular calcium in guinea pigs.
• The role of inhibition of sodium-potassium adenosine triphosphatase and high dietary sodium intake was studied in a guinea pig model of asthma.
• Potentiation of allergic asthma by exposure to Ozone and its modulation by dietary antioxidants, alpha tocopherol and ascorbic acid.

Outdoor Air Pollution

• Ambient air pollution and chronic respiratory morbidity in Delhi.
• Time-series study on air pollution and mortality in Delhi.

Smoking and Lung Diseases

• Patterns of smoking in Delhi: Comparison of respiratory morbidity among Bidi and Cigarette smokers
• Tobacco smoking in India: prevalence, quit-rates and respiratory morbidity.
• Household environmental tobacco smoke exposure, respiratory symptoms and asthma in non-smoker adults: a multicentric population study from India.

Pulmonary Functions

• Comparison of Bronchodilator Responsiveness in Asthma and Chronic Obstructive Pulmonary Disease
• Expression of bronchodilator response: comparison of four indices
• Acute bronchodilator response has limited value in differentiating bronchial asthma from COPD
• Using arm span to estimate height: Comparative evaluation of impact of three measures of height on interpretation of spirometry.
• Regional variations in vital capacity in adult males in India: Comparison of regression equations from four regions and impact on interpretation of spirometric data.

Chronic Obstructive Pulmonary Disease

• Cardiovascular autonomic neuropathy in Chronic Obstructive Pulmonary Disease
• Increased oxidative stress and altered levels of antioxidants in chronic obstructive pulmonary disease.
• Effect of  vitamin E supplementation of standard treatment on oxidant-antioxidant status in chronic obstructive pulmonary disease.
• Role of Mycoplasma pneumoniae infection in acute exacerbations of chronic obstructive pulmonary disease.
• Evaluation of three scales of dyspnea in chronic obstructive pulmonary disease.
• Abnormal heart rate recovery and chronotropic incompetence on exercise in chronic obstructive pulmonary disease.
• Heart rate variability in Chronic Obstructive Pulmonary Disease: association with systemic inflammation and clinical implications
• Endothelial dysfunction in chronic obstructive pulmonary disease

Interstitial Lung Diseases

• Clinical spectrum of Idiopathic Interstitial Pneumonias
• Management protocols for Idiopathic Interstitial Pneumonias
• Clinical-radiolofical responses to corticosteroids in Sarcoidosis

Epidemiology of Respiratory Diseases

• A multicentric study on epidemiology of chronic obstructive pulmonary disease and its relationship with tobacco smoking and environmental tobacco smoke exposure.
• Prevalence and risk factors for bronchial asthma in Indian adults: a multicentre study.