Structured noncoding RNAs (ncRNAs) contribute to many important cellular processes involving chemical catalysis, molecular recognition and gene regulation. Few ncRNA classes are broadly distributed among organisms from all three domains of life, but the list of rarer classes that exhibit surprisingly diverse functions is growing. We previously developed a computational pipeline that enables the near-comprehensive identification of structured ncRNAs expressed from individual bacterial genomes.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
October 2023
Riboswitches rely on structured aptamer domains to selectively sense their target ligands and regulate gene expression. However, some riboswitch aptamers in bacteria carry mutations in their otherwise strictly conserved binding pockets that change ligand specificities. The aptamer domain of a riboswitch class originally found to selectively sense guanine forms a three-stem junction that has since been observed to exploit numerous alterations in its ligand-binding pocket.
View Article and Find Full Text PDFComputational methods can be used to identify putative structured noncoding RNAs (ncRNAs) in bacteria, which can then be validated using various biochemical and genetic approaches. In a search for ncRNAs in , we observed a conserved region called the -II motif located upstream of the gene that is also present in other members of this genus. This gene codes for an enzyme involved in the production of branched-chain amino acids (BCAAs).
View Article and Find Full Text PDFBackground: Nurse led noncommunicable diseases (NCD) clinic may address the significant shortage of human resource for health for managing common NCDs. The objective of this study is to assess the feasibility and effectiveness of nurse-led NCD clinic for identification, prevention, and management of common NCDs.
Materials And Methods: A quasi experimental study was conducted at a Public Health Dispensary in periurban community of Northern India.
Riboswitches are structured noncoding RNA domains used by many bacteria to monitor the concentrations of target ligands and regulate gene expression accordingly. In the past 20 years over 55 distinct classes of natural riboswitches have been discovered that selectively sense small molecules or elemental ions, and thousands more are predicted to exist. Evidence suggests that some riboswitches might be direct descendants of the RNA-based sensors and switches that were likely present in ancient organisms before the evolutionary emergence of proteins.
View Article and Find Full Text PDFCardiovascular diseases (CVDs) contribute to most of the potentially preventable burden through early risk assessment. Nurse-led CVD risk assessment is an effective strategy to address the human resource crisis for CVD prevention. An interventional study was conducted in medicine wards of a tertiary care hospital in North India to train nurses in CVD risk assessment and its communication.
View Article and Find Full Text PDFBackground: Periodontal and peri-implant disorders are etiologically linked to bacterial biofilms. The researchers wanted to see how well the erbium-doped yttrium aluminum garnet (Er:YAG) laser removed bacterial biofilms along with attached epithelial cells (EC), gingival fibroblasts (GF), in addition to osteoblast-like cells (OC) dentin along with titanium surfaces compared to previous therapy methods.
Methodology: 3.
Background: The erbium-doped yttrium aluminium garnet (Er:YAG) laser has been revealed to effectively ablate dental hard tissues, and its utilisation to caries eradication and cavity preparation is envisaged. Nevertheless, only a limited research has been performed on the Er:YAG laser's capacity to treat caries.
Aim And Objectives: The efficiency of caries elimination with an Er:YAG laser was equated to that of traditional mechanical therapy in this study.
Nucleic Acids Res
February 2022
Hfq, a bacterial RNA chaperone, stabilizes small regulatory RNAs (sRNAs) and facilitates sRNA base-pairing with target mRNAs. Hfq has a conserved N-terminal domain and a poorly conserved disordered C-terminal domain (CTD). In a transcriptome-wide examination of the effects of a chromosomal CTD deletion (Hfq1-65), the Escherichia coli mutant was most defective for the accumulation of sRNAs that bind the proximal and distal faces of Hfq (Class II sRNAs), but other sRNAs also were affected.
View Article and Find Full Text PDFJ Pharm Bioallied Sci
November 2021
Aim: Children with a visually impairment often face various challenges in their day-to-day skills. Oral hygiene maintenance is one major task for them. Such child has difficulty to live current normal life and demands of permission or healthy life.
View Article and Find Full Text PDFAim: Sterilization of impression materials is of paramount importance. The present study was conducted to compare the effect of different disinfectants on dimensional accuracy of elastomeric impression materials used for implant prosthesis and other routine treatments.
Materials And Methods: The present study was conducted with polyvinyl siloxane (PVS) (regular body), PVS (medium body), PVS (heavy body), and polyether (medium body) impression materials.
Aim And Objective: To compare the fracture resistance in teeth managed by root canal treatment after restoring with different types of onlays, inlays, and endocrowns prepared with hybrid ceramics and pulp chambers restored with fiber-reinforced composite and resin composite that were radiopaque, light-cured, and flowable.
Materials And Methods: The present study was carried out on 252 extracted mandibular molars. All the specimens were divided into six groups randomly.
Background: There is abundant documentation in literature that presence of maternal periodontal infections has been attributed to serious health problem to the mother and the child. Regular evaluation of any illness burden is required for planning preventive and treatment strategies and fills the existing health gap. There is a lack of literature about the predictors and prevalence of periodontal diseases in expectant women in the slum areas of Patna.
View Article and Find Full Text PDFIndian J Palliat Care
November 2020
Background: Palliative care is comprehensive care that provides symptomatic relief and enhances the quality of life for people experiencing serious health-related suffering. There is an increasing need for palliative care services in India. Estimates for population requiring these services are essential in order to meet the increasing need for palliative care services.
View Article and Find Full Text PDFAim: The aim of this study was to assess the efficacy of 5% topical amlexanox and 0.1% topical triamcinolone acetonide in recurrent aphthous stomatitis (RAS) management.
Materials And Methods: Sixty adult patients of RAS of both genders were divided into two groups with each group having 30 patients.
Aim: The aim of this study was to assess different gingival displacement systems such as aluminum chloride retraction cords, expasyl, and tetrahydrozoline-soaked retraction cord to record intracrevicular margins of tooth preparations.
Materials And Methods: This study included 60 patients. Patients were divided into four groups of 15 each.
Aim: Numerous pulp-capping agents such as mineral trioxide aggregate (MTA), calcium hydroxide (Ca(OH)), platelet-rich fibrin (PRF), and biodentine have been suggested. This clinical study was conducted to compare MTA, PRF, and Ca(OH) in teeth with irreversible pulpitis.
Materials And Methods: The 60 mandibular molar teeth with irreversible pulpitis were used in this study, which were restored with Ca(OH), MTA, and PRF.
Background And Aims: A child usually takes up the behavioural habits by observing the parents at home. The mapping of the current level of influence of parents' practices over children is necessary for developing any preventive programs therefore the aim of the study was to determine the influence of familial oral health habits on the adolescent children belonging to rural background.
Method: The present cross-sectional questionnaire study was conducted on 236 rural participants (parents and their children) reporting to a private dental college in a rural set up in India.
Background: Patient's satisfaction is of utmost importance to the dental professionals among all those who have undergone prosthodontic rehabilitation. The success of every dental prosthesis lies in the patient wearing those removable prostheses thereby restoring masticatory function and Phonatics, hence the aim of the present study is to determine various factors affecting the patient satisfaction among patients undergone removable Prosthodontic rehabilitation.
Materials And Methods: The present study is a cross-sectional questionnaire descriptive study.
Background: Cheiloscopic analysis has been shown to have close association with skeletal malocclusion. Hence, aim of the present study was to explore any association between lip prints patterns and skeletal class I and II malocclusions.
Materials And Methods: A study sample of 90 subjects aged between 18 and 25 years was selected from individuals opting for orthodontic therapy.
Background: Molar incisor hypomineralization (MIH) is a developmental dental defect and has a significant impact on the quality of life of affected individuals. Most of the prevalence studies of MIH have been carried out in the European countries; very little data are available from India.
Aim: The aim and objective of this study was to determine the prevalence of MIH in 8-15-year-old Malayalee school children in and around Muvattupuzha, Kerala.
Hfq, an RNA chaperone, promotes the pairing of small RNAs (sRNAs) to target mRNAs, mediating post-transcriptional regulation of mRNA stability and translation. This regulation contributes to bacterial adaptation during stress and pathogenesis. Recent advances in sequencing techniques demonstrate the presence of sRNAs encoded not only in intergenic regions but also from the 3' and 5' UTRs of mRNAs, expanding sRNA regulatory networks.
View Article and Find Full Text PDFThe bacterial Sm protein and RNA chaperone Hfq stabilizes small noncoding RNAs (sRNAs) and facilitates their annealing to mRNA targets involved in stress tolerance and virulence. Although an arginine patch on the Sm core is needed for Hfq's RNA chaperone activity, the function of Hfq's intrinsically disordered C-terminal domain (CTD) has remained unclear. Here, we use stopped flow spectroscopy to show that the CTD of Escherichia coli Hfq is not needed to accelerate RNA base pairing but is required for the release of dsRNA.
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