Perception of patient safety culture among undergraduate dental students: a cross-sectional study.

Objectives: Although patient safety has received a lot of emphasis in medicine and nursing, data regarding patient safety perception in dentistry are limited, particularly among dental students. Given the increasing risk of safety hazards, curriculum developers need evidence to guide their implementation in undergraduate studies. This study aimed to determine patient safety culture among undergraduate dental students in Pakistan.

Comparison of Chlorhexidine Gluconate, Sodium Hypochlorite, Neem Extract, and Microwave Radiation for Disinfection of Type IV Dental Stone.

Objective:  The present study evaluated the effect of chemical disinfectants and microwave sterilization on the removal of biofilm containing , , and from type IV dental stone.

Materials And Methods:  One hundred twenty-eight ( = 128) type IV dental cast stone specimens were prepared, and biofilms of microorganisms were cultured. Dental stone samples were subjected to disinfection protocols, including 0.

Long Chain Base Profiling with Multiple Reaction Monitoring Mass Spectrometry.

Sphingolipids (SLs) are essential lipids with important functions in membrane formation and cell signaling. The presence of a long chain base (LCB) structure is common to all SLs. De novo SL synthesis is initiated by the enzyme serine-palmitoyltransferase (SPT), which forms an LCB by the conjugation from serine and fatty acyl-CoAs.

The conformational plasticity of structurally unrelated lipid transport proteins correlates with their mode of action.

Lipid transfer proteins (LTPs) are key players in cellular homeostasis and regulation, as they coordinate the exchange of lipids between different cellular organelles. Despite their importance, our mechanistic understanding of how LTPs function at the molecular level is still in its infancy, mostly due to the large number of existing LTPs and to the low degree of conservation at the sequence and structural level. In this work, we use molecular simulations to characterize a representative dataset of lipid transport domains (LTDs) of 12 LTPs that belong to 8 distinct families.

Learning styles, academic performance and mental health among medical students in King Faisal University, Saudi Arabia.

Objective: To assess the prevalence of various learning styles and their correlation with academic performance and mental health of medical students.

Methods: The cross-sectional study was conducted at the King Faisal University, Houfof, Saudi Arabia, from January to June 2019, and comprised medical students regardless of gender or the academic year. Data was collected using the Visual Aural Read/write Kinesthetic questionnaire.

Rapid hydrothermal synthesis of mesoporous NiS and NiSe nanostructures for wastewater treatment.

In the present study, single phase nickel based disulphide (NiS) and diselenide (NiSe) nanostructures were prepared hydrothermally in a short time span (4 h) under subcritical temperature (160 °C). The nanostructures grow in cubic crystal phases. Average crystallite sizes and intrinsic microstrains were determined using Williamson-Hall (W-H) plot analysis.

Recurrent mutation in confirms dysregulated sphingolipid production to cause juvenile amyotrophic lateral sclerosis.

Background: Amyotrophic lateral sclerosis (ALS) leads to paralysis and death by progressive degeneration of motor neurons. Recently, specific mutations in were identified in patients with juvenile form of ALS encodes the second catalytic subunit of the serine-palmitoyltransferase (SPT) complex.

Methods: We used the GENESIS platform to screen 700 ALS whole-genome and whole-exome data sets for variants in .

Recurrent de novo variant causes childhood-onset amyotrophic lateral sclerosis (ALS) by excess sphingolipid synthesis.

Background: Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease of the upper and lower motor neurons with varying ages of onset, progression and pathomechanisms. Monogenic childhood-onset ALS, although rare, forms an important subgroup of ALS. We recently reported specific variants resulting in sphingolipid overproduction as a cause for juvenile ALS.

Current Trends In Complete Denture Education In Undergraduate Dental Colleges Of Pakistan.

Objective: To determine the current trends in complete denture education in undergraduate dental colleges.

Methods: The survey-based study was conducted in April and May 2020 at undergraduate dental colleges of Pakistan, and comprised heads of the Prosthodontics Department at all dental colleges across Pakistan having at least one batch of final year dental students. Data was collected using an online predesigned questionnaire that explored theoretical and practical teaching patterns of complete denture prosthodontics in the undergraduate years, and the materials and practices of students when constructing complete dentures in the clinics.

Current Trends in Fixed Prosthodontics Education in Undergraduate Dental Colleges.

Objectives: The objective of this study was to explore current trends in undergraduate fixed prosthodontics teaching at undergraduate dental level education.

Methods: This cross-sectional descriptive study included close-ended questions to inquire about the teaching practices of fixed prosthodontics at Bachelor of Dental Surgery level education. Electronic copies of the survey forms were sent to the heads or directors of department of prosthodontics responsible for undergraduate dental students teaching and learning in various institutes of Sindh by the help of Google forms in December 2020.

Evaluation of gingival displacement, bleeding and ease of application for polytetrafluoroethylene (PTFE) and conventional retraction cord - a clinical trial.

Objective: Conventional use of retraction cord in soft tissue management is effective only when the non-resilient nature of material does not jeopardize gingival health. Therefore this study aims to clinically evaluate the gingival displacement, ease of application and bleeding from polytetrafluoroethylene (PTFE) retraction cord.

Patients And Methods: This study is a single-center, parallel-group, randomized controlled clinical trial (1:1).

CERT1 mutations perturb human development by disrupting sphingolipid homeostasis.

Neural differentiation, synaptic transmission, and action potential propagation depend on membrane sphingolipids, whose metabolism is tightly regulated. Mutations in the ceramide transporter CERT (CERT1), which is involved in sphingolipid biosynthesis, are associated with intellectual disability, but the pathogenic mechanism remains obscure. Here, we characterize 31 individuals with de novo missense variants in CERT1.

Tracking westerly wind directions over Europe since the middle Holocene.

The variability of the northern westerlies has been considered as one of the key elements for modern and past climate evolution. Their multiscale behavior and underlying control mechanisms, however, are incompletely understood, owing to the complex dynamics of Atlantic sea-level pressures. Here, we present a multi-annually resolved record of the westerly drift over the past 6,500 years from northern Italy.

SPTLC1 variants associated with ALS produce distinct sphingolipid signatures through impaired interaction with ORMDL proteins.

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease that affects motor neurons. Mutations in the SPTLC1 subunit of serine palmitoyltransferase (SPT), which catalyzes the first step in the de novo synthesis of sphingolipids (SLs), cause childhood-onset ALS. SPTLC1-ALS variants map to a transmembrane domain that interacts with ORMDL proteins, negative regulators of SPT activity.

Serine Palmitoyltransferase Subunit 3 and Metabolic Diseases.

Sphingolipids (SL) are a class of chemically diverse lipids that have important structural and physiological functions in eukaryotic cells. SL entail a long chain base (LCB) as the common structural element, which is typically formed by the condensation of L-serine and long chain acyl-CoA. This condensation is the first and the rate-limiting step in the de novo SL synthesis and catalyzed by the enzyme serine palmitoyltransferase (SPT).

Host Defence Peptides in Diabetes Mellitus Type 2 Patients with Periodontal Disease. A Systematic Review.

The aim of the study was to critically assess and review the latest evidence relating the associations between host defence peptides (HDPs), periodontal diseases (PD) and diabetes mellitus type 2 (DM2). To explore studies on HDPs, periodontal disease, and DM2, researchers utilised specific key phrases to search the electronic databases PubMed (National Library of Medicine), Embase (Ovid), Medline (EBSCO), and Dentistry and Oral Sciences (EBSCO). Quality assessment was conducted by means of the Newcastle Ottawa scale and the Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE) tool.

Precision mouse models of Yars/dominant intermediate Charcot-Marie-Tooth disease type C and Sptlc1/hereditary sensory and autonomic neuropathy type 1.

Animal models of neurodegenerative diseases such as inherited peripheral neuropathies sometimes accurately recreate the pathophysiology of the human disease, and sometimes accurately recreate the genetic perturbations found in patients. Ideally, models achieve both, but this is not always possible; nonetheless, such models are informative. Here we describe two animal models of inherited peripheral neuropathy: mice with a mutation in tyrosyl tRNA-synthetase, Yars , modeling dominant intermediate Charcot-Marie-Tooth disease type C (diCMTC), and mice with a mutation in serine palmitoyltransferase long chain 1, Sptlc1 , modeling hereditary sensory and autonomic neuropathy type 1 (HSAN1).

Metabolism of HSAN1- and T2DM-associated 1-deoxy-sphingolipids inhibits the migration of fibroblasts.

Hereditary sensory neuropathy type 1 (HSAN1) is a rare axonopathy, characterized by a progressive loss of sensation (pain, temperature, and vibration), neuropathic pain, and wound healing defects. HSAN1 is caused by several missense mutations in the serine palmitoyltransferase long-chain base subunit 1 and serine palmitoyltransferase long-chain base subunit 2 of the enzyme serine palmitoyltransferase-the key enzyme for the synthesis of sphingolipids. The mutations change the substrate specificity of serine palmitoyltransferase, which then forms an atypical class of 1-deoxy-sphinglipids (1-deoxySLs).

Childhood amyotrophic lateral sclerosis caused by excess sphingolipid synthesis.

Amyotrophic lateral sclerosis (ALS) is a progressive, neurodegenerative disease of the lower and upper motor neurons with sporadic or hereditary occurrence. Age of onset, pattern of motor neuron degeneration and disease progression vary widely among individuals with ALS. Various cellular processes may drive ALS pathomechanisms, but a monogenic direct metabolic disturbance has not been causally linked to ALS.

A tale of shifting relations: East Asian summer and winter monsoon variability during the Holocene.

Understanding the dynamics between the East Asian summer (EASM) and winter monsoon (EAWM) is needed to predict their variability under future global warming scenarios. Here, we investigate the relationship between EASM and EAWM as well as the mechanisms driving their variability during the last 10,000 years by stacking marine and terrestrial (non-speleothem) proxy records from the East Asian realm. This provides a regional and proxy independent signal for both monsoonal systems.

Critical features of periodontal flaps with regard to blood clot stability: A review.

Background: Wound healing is a multifactorial procedure involving different cell types and biological mediators. The principles of wound healing are also applicable to periodontal tissues. The formation and stability of blood clots play a vital role in successful healing of wounds in periodontal tissues.