Epigenetic change in e-cardherin and COX-2 to predict chronic periodontitis

<p>Abstract</p> <p>Background</p> <p>DNA methylation of certain genes frequently occurs in neoplastic cells. Although the cause remains unknown, many genes have been identified with such atypical methylation in neoplastic cells. The hypermethylation of E-Cadherin and Cyclooxygenase 2 (COX-2) in chronic inflammation such as chronic periodontitis may demonstrate mild lesion/mutation epigenetic level. This study compares the hypermethylation status of E-Cadherin and COX-2 genes which are often found in breast cancer patients with that in chronic periodontitis.</p> <p>Methods</p> <p>Total DNA was extracted from the blood samples of 108 systemically healthy non-periodontitis subjects, and the gingival tissues and blood samples of 110 chronic periodontitis patient as well as neoplastic tissues of 106 breast cancer patients. Methylation-specific PCR for E-Cadherin and COX-2 was performed on these samples and the PCR products were analyzed on 2% agarose gel.</p> <p>Results</p> <p>Hypermethylation of E-Cadherin and COX-2 was observed in 38% and 35% of the breast cancer samples, respectively. In chronic periodontitis patients the detection rate was 25% and 19% respectively, and none was found in the systemically healthy non-periodontitis control subjects. The hypermethylation status was shown to be correlated among the three groups with statistical significance (p < 0.0001). The methylation of CpG islands in E-Cadherin and COX-2 genes in periodontitis patients occurs more frequently in periodontitis patients than in the control subjects, but occurs less frequently than in the breast cancer patients.</p> <p>Conclusions</p> <p>This set of data shows that the epigenetic change in E-Cadherin and Cyclooxygenase-2 is associated with chronic periodontitis. The epigenetic changes presented in chronic inflammation patients might demonstrate an irreversible destruction in the tissues or organs similar to the effects of cancer. Chronic periodontitis to some extent might be associated with DNA hypermethylation which is related to cancer risk factors.</p

The determinants of stroke phenotypes were different from the predictors (CHADS2 and CHA2DS2-VASc) of stroke in patients with atrial fibrillation: a comprehensive approach

<p>Abstract</p> <p>Background</p> <p>Atrial fibrillation (AF) is a leading cause of fatal ischemic stroke. It was recently reported that international normalized ratio (INR) levels were associated with infarct volumes. However, factors other than INR levels that affect stroke phenotypes are largely unknown. Therefore, we evaluated the determinants of stroke phenotypes (pattern and volume) among patients with AF who were not adequately anticoagulated.</p> <p>Methods</p> <p>We analyzed data pertaining to consecutive AF patients admitted over a 6-year period with acute MCA territory infarcts. We divided the patients according to DWI (diffusion-weighted imaging) lesion volumes and patterns, and the relationship between stroke predictors (the CHADS₂and CHA₂DS₂-VASc score), systemic, and local factors and each stroke phenotype were then evaluated.</p> <p>Results</p> <p>The stroke phenotypes varied among 231 patients (admission INR median 1.06, interquartile range (IQR) 1.00-1.14). Specifically, (1) the DWI lesion volumes ranged from 0.04-338.62 ml (median 11.86 ml; IQR, 3.07-44.20 ml) and (2) 46 patients had a territorial infarct pattern, 118 had a lobar/deep pattern and 67 had a small scattered pattern. Multivariate testing revealed that the CHADS₂and CHA₂DS₂-VASc score were not related to either stroke phenotype. Additionally, the prior use of antiplatelet agents was not related to the stroke phenotypes. Congestive heart failure and diastolic dysfunction were not associated with stroke phenotypes.</p> <p>Conclusions</p> <p>The results of this study indicated that the determinants of stroke phenotypes were different from the predictors (i.e., CHADS2 and CHA₂DS₂-VASc score) of stroke in patients with AF.</p

Treating Clostridioides difficile: Could Microbiota-based Live Biotherapeutic Products Provide the Answer?

Sandhya Nagarakanti, Robert Orenstein Division of Infectious Diseases, Mayo Clinic Arizona, Phoenix, AZ, USACorrespondence: Sandhya Nagarakanti, Mayo Clinic Arizona, Division of Infectious Diseases, 577 East Mayo Boulevard, Phoenix, AZ, 85054, USA, Tel +1-480-342-0115, Fax +1-480-342-0689, Email [email protected]: Clostridioides difficile infection (CDI) is a pressing health care issue due to the limited effectiveness of current treatments and high recurrence rates. Current available antibiotic options for CDI disrupt the fecal microbiome which predisposes recurrent CDI. Fecal microbiota transplantation (FMT) has improved the outcomes of recurrent CDI, but concerns surrounding the safety and standardization of the product persist. Microbiota-based live biotherapeutic products (LBPs), are emerging as potential alternatives to FMT for CDI treatment. This review explores the potential of LBPs as safe and effective therapy for CDI. While preclinical and early clinical studies have shown promising results, further research is necessary to determine the optimal composition and dosage of LBPs and to ensure their safety and efficacy in clinical practice. Overall, LBPs hold great promise as a novel therapy for CDI and warrant further investigation in other conditions related to disruption of the colonic microbiota.Keywords: Clostridioides difficile, microbiome, live biotherapeutic products, recurrenc

An epidemiological data of oral health status and treatment needs of rural population of Nellore district, Andhra Pradesh, India

Introduction: As India is the second highest populated country and approximately 72% of this population live in rural areas, an attempt has been made to assess the prevalence of oral diseases in rural areas. Aim: To assess the prevalence of oral diseases in 5, 12, 35–44, and 65–74 years old population in rural areas of Nellore district, Andhra Pradesh, India. Materials and Methods: A cross-sectional survey was carried out using multistage cluster sampling methodology, and random samples of participants were selected. Data were collected on sociodemographic details, oral hygiene practices, and clinical oral health data collected according to the World Health Organization methodology criteria and simplified oral hygiene index. Data were analyzed using Chi-square test and linear and logistic regression. Results: Among 35–44 and 65–74 years age group, 54.1% and 42.2% of the population showed poor oral hygiene status. At age 12 years, 51% of children had caries; mean decayed, missing, filled teeth was 3.24 in 35–44 years and 12.01 in 65–74 years. Extraction was the most required treatment (52.1%) for older people, pulp care therapy for 12 years old (16.5%) and 35–44 years old (23.2%). Community periodontal index score 2 was dominant in 12 years old (30.5%) and 35–44 years old (54.6%) and score 3 in 65–74 years (46.9%) population. Definite malocclusion was seen in 18% of 12 years old population. All the independent variables were related to caries and periodontal status (P < 0.05). Conclusion: The study population was characterized by high prevalence of dental caries, periodontal diseases, and poor oral hygiene status, and age of the population is the most associated factor for dental caries and periodontal diseases