Publications by authors named "Bandyopadhyay Prasanta"

Empirical Bayes-based Methods () is an increasingly popular form of Objective Bayesianism (). It is identified in particular with the statistician Bradley Efron. The main aims of this paper are, first, to describe and illustrate its main features and, second, to locate its role by comparing it with two other statistical paradigms, Subjective Bayesianism () and Evidentialism's main formal features are illustrated in some detail by schematic examples.

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A laboratory pot experiment (Experiment 1) was conducted to determine the optimal ratio of groundnut haulm and shell as composting substrates. The aim was to identify the most effective combination for rapid decomposition under conditions. The experiment was carried out in 2022, from May to July, using a completely randomized design (CRD) with 6 treatments that were replicated 4 times.

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Background: Several studies have suggested a relationship between periodontitis and serum creatinine levels. Both low and high serum creatinine levels have been reported in individuals with periodontitis. The impact of periodontal therapy on serum creatinine levels has not been fully investigated yet.

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Introduction: Anaemia is one of the micronutrient deficiency disorders that have global public health implications. The present study aims to determine the association of minimum dietary diversity (MDD) with anaemia among children aged 6-59 months in rural North India.

Methods: In Rohtak (a north Indian city), a cross-sectional survey was conducted in 2018-19 (n = 266).

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The Quantum Drude Oscillator (QDO) model is a promising candidate for accurately calculating the van der Waals (vdW) interaction. Anisotropic QDO models have recently been used to represent quantum fluctuations of molecular fragments rather than that of single atoms. While this model promises accurate calculation of vdW energy, there is significant room for improvements, such as incorporating a proper fragmentation method, higher-order dispersion corrections, and so forth.

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Background: Matrix metalloproteinases (MMPs) are a major group of enzymes, released in inflamed periodontal tissues in large quantities, resulting in connective tissue matrix breakdown. One of the most predominant MMPs is MMP-9. Association between chronic periodontitis (CP) and MMP-9 gene polymorphism (GP) in some ethnic populations has been already established.

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Modeling intermolecular noncovalent interactions between large molecules remains a challenge for the electron structure theory community due to the high cost. Fragment-based methods usually fare well in reducing the cost of computations in such systems. On the other hand, the interactions between quantum mechanical fluctuations of electron density can be modeled well by the interaction between atom-centered quantum Drude oscillators.

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Background: Matrix metalloproteinases (MMPs) are a group of host-derived zinc-dependent enzymes which mediates the destruction of the extracellular matrix. In periodontitis, there is excess production of MMPs associated with periodontal tissue destruction. The aim of this study was to estimate the level MMP-9 in both active and latent form in gingival tissue (GT) samples collected from periodontitis patients with different rates of progression and compare it with healthy individuals.

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We investigate the epistemological consequences of a positive polymerase chain reaction SARS-CoV test for two relevant hypotheses: (i) V is the hypothesis that an individual has been infected with SARS-CoV-2; (ii) C is the hypothesis that SARS-CoV-2 is the cause of flu-like symptoms in a given patient. We ask two fundamental epistemological questions regarding each hypothesis: First, how much confirmation does a positive test lend to each hypothesis? Second, how much evidence does a positive test provide for each hypothesis against its negation? We respond to each question within a formal Bayesian framework. We construe degree of confirmation as the difference between the posterior probability of the hypothesis and its prior, and the strength of evidence for a hypothesis against its alternative in terms of their likelihood ratio.

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Background: According to the American Association of Periodontology, subepithelial connective tissue graft (SCTG) is one the most reliable surgical technique available for the treatment of gingival recession (GR) with Miller's Class I defect. However, due to its various disadvantages, alternate grafts such as acellular dermal matrix (ADM) grafts have been introduced for recession coverage. The present study compares the clinical outcome of these two grafts in treating Miller's Class I GR.

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In the realm of non-covalent interactions (NCI), the odd-electron halogen bond offers a fertile ground to explore the nature of such weak interactions. Here, an ab initio study of odd-electron halogen bonding (XB) is reported. The interactions of five radicals with several freons and interhalogens are studied using the Møller-Plesset (MP2) method.

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Odd electron halogen bonding of freons with five different free radicals have been investigated using M06-2X/6-311G++(d,p). Conceptual density functional theory parameters such as Fukui functions, electrophilicity index and chemical hardness have been utilised to examine the regioselectivity and strength of free radical induced halogen bonding. The strong electrophilic radical Cl˙ forms three-electron bonds upon interacting with the nucleophilic ring surrounding the sigma hole or fk- regions.

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Here, we present a density functional theory (DFT) study of hydrogen bonding and π-π stacking interactions between epinephrine and different aromatic nitro-compounds in gas phase as well as in methanol solvent. Detail investigations of hydrogen bonding and π-π interactions are performed and confirmed on the basis of theoretical IR spectra, natural bond orbital (NBO) analysis, non-covalent interaction (NCI), chemical reactivity descriptors and electronic spectra. Among different functionals used for the calculation, the results obtained from ωB97XD functional are found to be more suitable to describe the hydrogen bonding and π-π stacking phenomenon for our considered systems.

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Background: Ketogenic therapy in the form of ketogenic diets or calorie restriction has been proposed as a metabolic treatment of high grade glioma (HGG) brain tumors based on mechanistic reasoning obtained mainly from animal experiments. Given the paucity of clinical studies of this relatively new approach, our goal is to extrapolate evidence from the greater number of animal studies and synthesize it with the available human data in order to estimate the expected effects of ketogenic therapy on survival in HGG patients. At the same time we are using this analysis as an example for demonstrating how Bayesianism can be applied in the spirit of a circular view of evidence.

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Context: Host's immune response elicits cytokines in response to bacterial challenge. We explore role of one such cytokine interleukin-18 (IL-18) in periodontal health and disease.

Aims: IL-18 is a pro-inflammatory and tumor suppressive cytokine.

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Background: Myeloperoxidase (MPO) is a lysosomal enzyme found in the azurophilic granules of polymorphonuclear leukocytes and is able to mediate inflammatory tissue destruction in aggressive and chronic periodontitis (CP). Human telomerase is a multi subunit ribonucleoprotein enzyme concerned with telomeric lengthening and homeostasis in man and has been found to be elevated in inflammatory conditions such as rheumatoid arthritis and periodontitis. The aim of this study was to explore in aggressive periodontitis (AP) subjects: (i) The role of MPO-463G/A gene polymorphism and (ii) the level of telomerase expression.

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Background: The aim of this study is to evaluate the expression of human telomerase reverse transcription (hTERT) enzyme in chronic periodontitis (CP) and aggressive periodontitis (AgP) compared with healthy individuals.

Methods: A total of 79 individuals consented to participate in the study. The study sample comprised healthy individuals (n = 30), patients with CP (n = 30), and patients with AgP (n = 19).

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Article Synopsis
  • The study investigates the relationship between genetic markers (HLA) and immune cell dysfunction in aggressive periodontitis (AP), comparing it to chronic periodontitis (CP) and healthy controls.
  • The research involved 45 participants divided into three groups (healthy, CP, and AP) to analyze various immune parameters.
  • Findings suggest a higher frequency of specific HLA types and blood group AB in AP subjects, along with significantly altered immune responses, indicating a possible link between genetic factors and periodontal disease severity.
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Article Synopsis
  • Cranberry juice polyphenols, particularly proanthocyanidins, have been recognized for their health benefits over the past decade, especially regarding urinary tract infections.
  • Despite their known systemic advantages, there is limited research on the benefits of these polyphenols for oral health.
  • A comprehensive review was conducted, examining the effects of high molecular weight cranberry fractions on oral tissues and periodontal diseases, using resources like PubMed and the institute library.
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To highlight the effect of 1,1,1,2 tetrafluoroethane (TFE), a new material for cryosurgery of gingival melanin pigmentation (GMP). Five patients were treated using a TFE-cooled swab and the pre- and post-treatment photographs were compared. Complete keratinization took place in 3-4 weeks after application without any trace of pigmentation.

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Epidermoid cyst of the neck or auricular area are relatively more common than that of the oral cavity. In most cases about 80% they remain asymptomatic. But in about 20% cases it becomes painful because of secondary infection seeking treatment.

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Gingival enlargement is one of the side effects associated with certain drugs. Amlodipine, a calcium channel blocker, used as antihypertensive drug has been found associated with gingival hyperplasia. This case series presents diagnosis and management of amlodipine-induced gingival hyperplasia.

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