Publications by authors named "Nitin Bhatt"

Study Objectives: Physicians-in-training (residents, fellows) and Advanced Practice Providers (APPs) receive limited education on sleep disorders, including obstructive sleep apnea (OSA). They often assess patients first. We aimed to understand their views on OSA and screening for OSA in the perioperative period.

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Climate change adversely impacts global health. Increasingly, temperature variability, inclement weather, declining air quality, and growing food and clean water supply insecurities threaten human health. Earth's temperature is projected to increase up to 6.

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Background: Systemic sclerosis (SSc) is a rare, complex, connective tissue disorder. Interstitial lung disease (ILD) is common in SSc, occurring in 35-52% of patients and accounting for 20-40% of mortality. Evolution of therapeutic options has resulted in a lack of consensus on how to manage this condition.

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Objectives: To establish a framework by which experts define disease subsets in systemic sclerosis associated interstitial lung disease (SSc-ILD).

Methods: A conceptual framework for subclinical, clinical and progressive ILD was provided to 83 experts, asking them to use the framework and classify actual SSc-ILD patients. Each patient profile was designed to be classified by at least four experts in terms of severity and risk of progression at baseline; progression was based on 1-year follow-up data.

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Aim: To develop a co-crytsal of Telmisartan for enhancing its solubility in water.

Background: Intermolecular interaction happens in crystal packing; it utilizes and helps to understand the design of new solid with their respective chemical and physical properties called crystal engineering. It is a blueprint of molecular solids with specific chemical and physical properties through an understanding and handling of intermolecular interaction for increasing the solubility, in case of poor water-soluble drugs.

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One-seventh of the world's adult population, or approximately one billion people, are estimated to have OSA. Over the past four decades, obesity, the main risk factor for OSA, has risen in striking proportion worldwide. In the past 5 years, the WHO estimates global obesity to affect almost two billion adults.

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Acute exacerbation of interstitial lung disease (ILD) is associated with a poor prognosis and high mortality. Numerous studies have documented acute exacerbation in idiopathic pulmonary fibrosis (IPF), but less is known about these events in other ILDs that may present a progressive-fibrosing phenotype. We propose defining acute exacerbation as an acute, clinically significant respiratory deterioration, typically less than 1 month in duration, together with computerised tomography imaging showing new bilateral glass opacity and/or consolidation superimposed on a background pattern consistent with fibrosing ILDs.

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Background: Rare genetic variants cause pulmonary arterial hypertension, but the contribution of common genetic variation to disease risk and natural history is poorly characterised. We tested for genome-wide association for pulmonary arterial hypertension in large international cohorts and assessed the contribution of associated regions to outcomes.

Methods: We did two separate genome-wide association studies (GWAS) and a meta-analysis of pulmonary arterial hypertension.

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Obstructive sleep apnea (OSA) is highly prevalent in patients undergoing total joint arthroplasty (TJA) and is a major risk factor for postoperative cardiovascular complications and death. Recognizing this, the American Society of Anesthesiologists urges clinicians to implement special considerations in the perioperative care of OSA patients. However, as the volume of patients presenting for TJA increases, resources to implement these recommendations are limited.

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Objective: To identify the perception level, and knowledge level of health risks due to waterpipe tobacco smoking, and knowledge about prohibition of waterpipe tobacco smoking, of foreign tourists in Thailand.

Material And Method: This is a descriptive cross-sectional study, carried out among foreign tourists in nightspots on Khao San Road area of Bangkok. Structured interview questionnaire was the data collection instrument for 176 convenience-sampling.

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Update on eosinophilic lung diseases.

Semin Respir Crit Care Med

October 2012

The eosinophilic lung diseases are a group of pulmonary disorders characterized by an increase in blood and/or lung eosinophils. These disorders can be primary pulmonary disorders or the secondary manifestation of other systemic or pulmonary conditions, infection, drug reaction, or malignancy. The approach to a patient with eosinophilic lung disease involves a thorough history and physical examination, review of exposures and appropriate testing, often including bronchoscopy or lung biopsy, to establish a specific etiology and determine therapy.

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Background: New evidence links nicotine to the regulation of T cell-mediated inflammation via a 7 nicotinic cholinergic receptor activation, and chronic nicotine exposure (smoking) reduces the incidence of granulomatous diseases. We sought to determine whether nicotine treatment was well tolerated while effectively normalizing immune responses in patients with active pulmonary sarcoidosis.

Methods: Consenting adults with symptomatic sarcoidosis (n 5 13) were randomly assigned to receive 12 weeks of nicotine treatment plus conventional therapy or conventional therapy alone.

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Chronic obstructive pulmonary disease (COPD) is a very common lung disease most often related to a history of smoking. It becomes more prevalent with increasing age but remains under-diagnosed and under-treated in the elderly population. The Global Initiative for Obstructive Lung Disease (GOLD) programme has been instrumental in providing standard diagnostic criteria as well as recommendations for prevention and management of COPD.

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Rationale: Monocytes are central to the initiation of the inflammatory response in sepsis, with caspase-1 activation playing a key role. Monocyte deactivation during sepsis has been linked to poor outcomes.

Objectives: Given the importance of caspase-1 in the immune response, we investigated whether monocytes from patients early in septic shock demonstrate alterations in mRNAs for caspase-1-related molecules.

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Background: The American Thoracic Society recommends using the lower limit of normal (LLN) method to diagnose obstructive lung disease. However, few studies have investigated the clinical relevance of these recommendations. We compared the LLN derived from available data sets to a fixed ratio (FEV1/FVC, < 75% or 70%) and also to the FEV1/FVC percent predicted ratio to determine the impact of changing the FEV1/FVC "cutoff" on the spirometric diagnosis of obstructive lung disease.

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Idiopathic pulmonary fibrosis is the most common form of the interstitial lung diseases and is characterized by chronic progressive pulmonary parenchymal fibrosis. Although the diagnosis and pathophysiology of this disease have been better characterized over the past few years, there remains no effective therapy for this disease. Therapies initially aimed at inflammation have proven ineffective, and newer strategies targeting aspects of aberrant wound repair involving alveolar epithelial cells or septal endothelial cells are now being investigated.

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We previously reported that activation of the phosphatidylinositol (PI) 3-kinase pathway was important in M-CSF-induced monocyte survival. Because M-CSF also induces activation of the mitogen-activated protein (MAP) kinase extracellular-regulated kinase (Erk), we focused on dissecting the mechanism used by M-CSF to induce Erk activation in human monocytes. We found that, in addition to the MAP/Erk kinase inhibitor PD098059, the PI 3-kinase inhibitors LY294002 and wortmannin both suppressed Erk activation in M-CSF-treated monocytes, suggesting that 3-phosphorylated products of PI 3-kinase played a role in Erk activation.

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A number of inflammatory cytokines and growth factors promote monocyte survival; however, the biochemical events stimulated by these factors are poorly defined. We previously showed that the monocyte survival factor macrophage colony-stimulating factor (M-CSF) activated monocyte survival through a PI 3-kinase-dependent pathway resulting in the phosphorylation of Akt and the suppression of the activation of caspase-3. Because other cytokines and bacterial cell wall products also induce monocyte survival, we hypothesized that these factors may also suppress caspase-3 and caspase-9 activation and activate Akt in human monocytes.

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