Submicromolar fluorescence 'turn-on' detection of fluoride anions using -(tetra-aryl) calix[4]pyrrole.

-(tetra-aryl) picket calix[4]pyrrole 1 featuring -fluorophenyl groups at all four -positions in a -configuration has been synthesized and characterized unambiguously using single-crystal X-ray diffraction analysis. This pre-organized system possesses a deep binding pocket created by the four aryl groups so that anions can be accommodated through anion-π interactions and four-point N-H⋯anion hydrogen bonds. Single-crystal X-ray diffraction analysis of the CsF and TEAF (TEA = tetraethylammonium) complexes of receptor 1 unequivocally confirms the formation of 1 : 1 complexes, revealing the binding modes in the solid state.

Burden of drug-resistant tuberculosis by the GeneXpert MTB/RIF assay and its clinico-epidemiological aspects at a tertiary care hospital in West Bengal.

Multidrug -resistant tuberculosis (MDRTB) is a serious threat to mankind. India has the highest number of MDRTB cases, although majority remain undiagnosed due to inadequate diagnostic infrastructure, leading to increased community transmission and mortality. This one-year observational retrospective study highlighted the effectiveness of the National Tuberculosis Elimination Program (NTEP) for prompt detection of drug-resistant TB by GeneXpert MTB/RIF assay and revealed its associated clinico-epidemiological factors.

Myasthenia gravis with Castleman disease: A case report with review of literature.

Myasthenia gravis is an autoimmune disorder caused by the formation of autoantibodies directed against the synapses of neuromuscular junction. It is most commonly associated with other non-thymomatous lesions. Castleman disease is one of them, which is a benign lymphoproliferative disorder of uncertain origin.

Multi-spectroscopic and thermodynamic profiles on HSA binding of leaf based potential antibacterial and anticancer silver nanoparticles.

Here, a simple, one step, lucrative and green synthesis of leaf extract inspired antibacterial silver nanoparticles (CF-SNPs) was provided. Characterization of these CF-SNPs were achieved by using various spectroscopic techniques for instance Ultraviolet Visible (UV-Vis) Spectroscopy, Fourier-Transform Infrared (FTIR) Spectroscopy, Dynamic Light Scattering (DLS), Transmission Electron Microscopy (TEM) and Energy Dispersive X-ray (EDX). The effective antibacterial action of the CF-SNPs was checked against () DH5-Alpha where MIC was 1.

Evaluation of calf thymus DNA binding of newly synthesize five 9 O Imidazolyl alkyl berberine derivative: A comparative multi-spectroscopic and calorimetric study.

DNA binding with small molecule plays an important role in the designing of various anticancer drugs with greater efficacy. The five 9-O-imidazolyl alkyl berberine derivatives (BI) of different chain length has been synthesized and fully characterized. The binding study of calf thymus DNA with these newly synthesized berberine derivative was performed using various biophysical techniques.

Transmembrane fluoride anion transport by -3,5-bis(trifluoromethyl)phenyl picket calix[4]pyrrole.

-3,5-bis(trifluoromethyl)phenyl picket calix[4]pyrrole 1 displays excellent fluoride anion transport activity across artificial lipid bilayers showing EC = 2.15 μM (at 450 s in EYPC vesicle) with high fluoride over chloride ion selectivity. The high fluoride selectivity of 1 was ascribed to the formation of a sandwich type π-anion-π interaction complex.

Anti--benzoquinone antibody level as a prospective biomarker to identify smokers at risk for COPD.

Background And Objective: Identification of smokers having predisposition to COPD is important for early intervention to reduce the huge global burden of the disease. Using a guinea pig model, we have shown that -benzoquinone (-BQ) derived from cigarette smoke (CS) in the lung is a causative factor for CS-induced emphysema. -BQ is also derived from CS in smokers and it elicits the production of anti--BQ antibody in humans.

A Study of Depression in Adult Patients with Bronchial Asthma Presenting to a Tertiary Care Hospital in Eastern India.

Background: Bronchial asthma is a serious global health problem. Depression, the most common mood disorder, is often found to be higher among people with chronic health conditions like bronchial asthma.

Methods: Patients with newly diagnosed to have bronchial asthma (n = 100) who fulfilled the study criteria were evaluated for depression with Beck Depression Inventory (BDI) score.

Spectrum of diffuse parenchymal lung diseases with special reference to idiopathic pulmonary fibrosis and connective tissue disease: An eastern India experience.

Objective: To evaluate the clinical spectrum of diffuse parenchymal lung diseases (DPLD) encountered in the Indian setting and to compare idiopathic pulmonary fibrosis (IPF) and connective tissue disease associated DPLD (CTD-DPLD), the two commonest aetiologies.

Materials And Methods: A prospective study of clinical, imaging and laboratory parameters of patients diagnosed as DPLD and followed up in the Pulmonary Medicine Department of a tertiary-care teaching institution in eastern India was conducted over a period of one year.

Results: 92 patients of DPLD were diagnosed in the study period with IPF (n = 35, 38.

A cross-sectional prospective study of pleural effusion among cases of chronic kidney disease.

Background: Pleural effusions of diverse aetiologies are encountered in patients with chronic kidney disease (CKD). The objectives of the present study were to examine the frequency of occurrence, causes, clinical features and management strategies of pleural effusion in patients with CKD including renal transplant recipients.

Methods: A prospective cross-sectional observational analysis of pleural effusion in adult patients with CKD (stages 3 to 5) attending the Departments of Nephrology and Respiratory Medicine of a tertiary care institution in Eastern India was performed over a period of one year (February 2010 to January 2011).

Erasmus Syndrome: A Case Report of Silicosis-induced Scleroderma in a 26-year-old Male.

Several occupational hazards especially exposure to silica have been implicated as causal factors for the development of scleroderma-like disorders. Many case reports have documented the co-existence of silicosis and progressive systemic sclerosis in the same patient, mostly from European countries and also from Japan and the United States. We report a case of a 26-year-old male involved in stone masonry who developed silicosis-induced diffuse parenchymal lung disease and systemic sclerosis after exposure to silica dust.

Hydatid lung disease: an analysis of five years cumulative data from Kolkata.

Background And Objective: There is scarcity of clinical data regarding hydatid lung disease from Indian subcontinent. In this retrospective study we analyzed the cumulative data over five year's period from two tertiary care hospitals of Kolkata to determine the presentation, treatment and outcome of hydatid disease of lung.

Method: We analyzed 106 patients on the basis of clinical findings, radiological findings [chest X-ray--PA and lateral view, CT scan of thorax and upper abdomen, ultrasonography (USG) of thorax and upper abdomen] and serological test IgG ELISA (enzyme linked immunosorbent assay) against echinococcus granulosus antigen along with the mode of diagnosis, indications and types of surgery, and outcome of treatment with chemotherapy (albendazole), surgery and combined surgery with chemotherapy.

Life-threatening haemothorax: a rare presentation of pulmonary arteriovenous malformation.

Arteriovenous malformations of the lung are rare pulmonary vascular disorders which can suddenly lead to life threatening complications. Haemothorax due to rupture of a pulmonary arteriovenous malformation (PAVM) is very rare. We report here a case of a 39 year-old lady who presented with an acute onset of shortness of breath due to right-sided massive haemothorax and was subsequently detected to have pulmonary as well as cerebral arteriovenous malformation (CAVM).

Presence and severity of COPD among patients attending cardiology OPD of a tertiary healthcare centre.

Chronic obstructive pulmonary disease (COPD) and ischaemic heart disease (IHD) are two very common entities, which often coexist due to common risk factors notably smoking. Though both are common causes of chronically poor health, only cardiovascular disease has got major health priority and government research funding. COPD is largely underdiagnosed and even unsuspected among cases of IHD.

Occurrence of allergic bronchopulmonary mycosis in patients with asthma: An Eastern India experience.

Background: Allergic bronchopulmonary mycosis (ABPM) is a clinical syndrome associated with immune sensitivity to various fungi notably Aspergillus spp. that colonize the airways of asthmatics. Early diagnosis and treatment with systemic corticosteroids is the key in preventing the progression of the disease to irreversible lung fibrosis.

Adult thoracic empyema: A comparative analysis of tuberculous and nontuberculous etiology in 75 patients.

Background: Thoracic empyema is a disease of significant morbidity and mortality, especially in the developing world where tuberculosis remains a common cause. Clinical outcomes in tuberculous empyema are complicated by the presence of concomitant fibrocavitary parenchymal disease and frequent bronchopleural fistulae. We performed a prospective study over a one-and-a-half-year period with the objective of comparing the clinical profiles and outcomes of patients with tuberculous and nontuberculous empyema.