Objective: To investigate the metabolic trajectory of kidney aging and the effects of Polygonatum sibiricum polysaccharides (PSP) against kidney aging in D-galactose (D-gal)-induced aging mice, based on ultra-performance liquid chromatography/Q-Exactive Orbitrap mass spectrometry (UPLC-Q-Exactive MS/MS). Methods: A total of 36 C57 BL/6J mice were randomly allocated to six groups: control (CON), model (MOD), PSP low-dose (PSP-L), PSP medium-dose (PSP-M), PSP high-dose (PSP-H), and positive drug ascorbic acid (VC) groups. To create models of aging mice, D-gal was intraperitoneally administered to all other groups of mice except the CON group. After modeling, the appropriate Chinese medicine [PSP-L: 150 mg/(kg·d), PSP-M: 300 mg/(kg·d), PSP-H: 600 mg/(kg·d)] or positive drug [ascorbic acid, 300 mg/(kg·d)] was administered for intervention. Key markers of renal function in urine and serum of mice in each group, such as creatinine (Crea), urea nitrogen (BUN), and uric acid (UA) levels, as well as key indicators of oxidative stress in serum and kidney, including superoxide dismutase (SOD), catalase (CAT), malondialdehyde (MDA), and glutathione peroxidase (GSH-Px) were determined to validate the successful establishment of kidney aging models and to estimate the effects of PSP. Hematoxylin and eosin (HE), periodic acid Schiff (PAS), and β-galactosidase staining were used to assess the renal pathological changes. The metabolic profiles of serum, kidney, and urine samples from CON, MOD, and PSP-H groups were analyzed by UPLC-Q-Exactive MS/MS, and pattern recognition methods were used to outline the metabolic trajectory of kidney aging and to identify the characteristic metabolites. Results: Age-related alterations in renal histopathology and impaired renal function in mice were also associated with oxidative stress indicators. Following the injection of PSP [PSP-H: 600 mg/(kg·d)], the pathological indices associated with aging were adjusted to normal levels, renal function and oxidative stress were improved in aging mice, and renal pathological damage was markedly improved. Meanwhile, the potential biomarkers were identified by UPLC-Q-Exactive MS/MS analysis and were further analyzed to form related metabolic pathways, with P < 0.05 as a threshold. The results showed that purine, sphingolipid, glycerophospholipid, tryptophan, and riboflavin metabolisms were the main metabolic pathways associated with aging. After administration of PSP, these pathological indices returned to normal levels, and biomarkers related to the aging process, such as adenosine monophosphate (AMP), tryptophan, and 5-hydroxytryptophan, also demonstrated, to some degree, reverse regulation (promoting synthesis). Conclusion Metabolomics methods based on UPLC-Q-Exactive MS/MS and multivariate statistical analysis can be adopted to establish metabolic profiles in aging mice. PSP has been shown to protect against kidney aging by interfering with the purine, sphingolipid, glycerophospholipid, tryptophan, and riboflavin metabolisms in the kidney.

ABSTRACT Good denture hygiene is crucial for the prevention of various periodontal diseases, dental caries and dental stomatitis, which can give rise to a negative impact on the general health of denture users. A comparison exercise was conducted, to determine the effectiveness of information on denture care, provided by different groups of dental personnel. A self-administered and structured questionnaire was distributed to patients who attended Hospital USM’s dental clinics, from 2014 to 2019 based on the attendance register of the clinic. The denture hygiene status of 100 participants was assessed during the interview session. The results derived through the questionnaire revealed that 100% of the respondents, who received both verbal and written instructions, practiced good dental hygiene. It was observed that the most effective instructions received by the respondents were delivered by the dental specialists. Respondents, who clean their dentures with denture cleaning tablets, soap, or denture cleaning paste, were observed to possess better denture hygiene than those who do not. Also, respondents who visit their dentists once every six months for routine dental examinations boasted a higher percentage of good denture hygiene (81.8%). A positive association was perceived, between knowledge and the status of denture hygiene.
Oral Hygiene--psychology

Education is considered to be a cultural and value-driven matter where any intervention in this field requires certain tools in order to describe the status quo. The current study, while taking into account the contextual texts related to Islamic mentoring, seeks to develop a tool to quantify this concept, as well as introduce the respective psychometric properties. A 113 items questionnaire was designed after reviewing the literature, the recommended guidelines concerning Islamic mentor and mentee, and reviewing available international tools. Content validity of the questionnaire was evaluated based on several criteria of clarity, fitness, and comprehensiveness by a survey of 10 experts and the necessary corrections were made. In the primary phase of this study, the psychometric properties of this questionnaire were evaluated by collecting the data from a random sample of 213 Iranian Ph.D. students in Tehran Universities of Medical Sciences. The factors analysis results show that 70 items, in the form of nine factors, construct the Islamic monitoring. Furthermore, The Cronbach's α coefficient was determined for each factor and the entire questionnaire. Total reliability of the scale was obtained at 0.97. Considering the confirmed validity and reliability of the questionnaire, this tool can be highly beneficial for the experts and education professionals, particularly in the field of medicine, for the assessment and establishment of mentoring.
Education ; Education, Medical ; Humans ; Iran ; Islam ; Mentors ; Psychometrics ; Reproducibility of Results

Education is considered to be a cultural and value-driven matter where any intervention in this field requires certain tools in order to describe the status quo. The current study, while taking into account the contextual texts related to Islamic mentoring, seeks to develop a tool to quantify this concept, as well as introduce the respective psychometric properties. A 113 items questionnaire was designed after reviewing the literature, the recommended guidelines concerning Islamic mentor and mentee, and reviewing available international tools. Content validity of the questionnaire was evaluated based on several criteria of clarity, fitness, and comprehensiveness by a survey of 10 experts and the necessary corrections were made. In the primary phase of this study, the psychometric properties of this questionnaire were evaluated by collecting the data from a random sample of 213 Iranian Ph.D. students in Tehran Universities of Medical Sciences. The factors analysis results show that 70 items, in the form of nine factors, construct the Islamic monitoring. Furthermore, The Cronbach's α coefficient was determined for each factor and the entire questionnaire. Total reliability of the scale was obtained at 0.97. Considering the confirmed validity and reliability of the questionnaire, this tool can be highly beneficial for the experts and education professionals, particularly in the field of medicine, for the assessment and establishment of mentoring.

Introduction: The escalated demand for protective rubber glove in the healthcare industries has resulted in increased prevalence of glove related skin problem, irritant and allergic contact dermatitis and latex sensitivity. The industry has recently introduced a new nitrile glove product using a novel patented non-sulphur system to effect co-valent bond crosslinking to provide the desired elasticity of the gloves. This glove also has ionic crosslinking provided by the zinc oxide used in the formulation and the carboxylic group of the nitrile latex. The main objective of this study is to prove that residual chemical additives at a level that may induce Type IV allergy in the unsensitized general user population are not present in this rubber glove and to compare it with a powder free latex examination glove. Methods: In collaboration with the Islamic University of Gaza, we conduct modified test on a specially formulated and powder free, accelerator free LOW DERMA™ enhanced nitrile rubber glove that has physical properties and barrier integrity similar to that of NRL gloves. This glove does not contain sulphur or sulphur related compound. Two sets of Powder free, accelerator free LOW DERMA™ Nitrile Patient Examination Gloves*, white and blue colour were tested using the modified draize-95’ test. Filter paper soaked in normal saline and powder free latex examination glove were used as control. Results: A total of 209 subjects, 149 subjects, Caucasian (71.29%), 30 subjects, Afro Caribbean (14.35%) and 30 subjects, Asiatic (14.35%) were recruited. All 209 subjects had a final patch testing scoring of not more than 1.5 during both the induction phase and the challenge phase for both types of Powder Free Nitrile Patient Examination Gloves (white and blue) and to the negative control, normal filter paper and the powder free NRL control glove. Conclusion: The skin sensitization test (‘Modified Draize-95’ Test) of Powder Free Nitrile Patient Examination Gloves (white and blue) and the powder free NRL examination glove were negative. There was no clinical evidence on the presence of residual chemical additives at the level that may induce Type IV allergy in unsensitized general user population for both Powder Free Nitrile Patient Examination Gloves, blue and white colored, non-sterile. Both gloves qualify for “Low dermatitis Claim”.

BACKGROUND/AIMS: The risk of gastrointestinal (GI) bleeding with dabigatran when compared to warfarin has been controversial in the literature. The aim of our study was to assess this risk with the use of dabigatran. METHODS: We examined the medical records of patients who were started on dabigatran or warfarin from October 2010 to October 2012. The study was conducted in two hospitals. RESULTS: A total of 417 patients were included (208 dabigatran vs. 209 warfarin). GI bleeding occurred in 10 patients (4.8%) in the dabigatran group compared to 21 patients (10.1%) in the warfarin group (p=0.0375). Multivariate analysis showed that patients who were on dabigatran for < or =100 days had a higher incidence of GI bleeding than those who were on it for >100 days (p=0.0007). The odds of GI bleeding in patients who were on dabigatran for < or =100 days was 8.2 times higher compared to those who were on the drug for >100 days. The incidence of GI bleeding in patients >65 years old was higher than in those <65 years old (p=0.0453, OR=3). History of previous GI bleeding was another risk factor for GI bleeding in the dabigatran group (p=0.036, OR=6.3). The lower GI tract was the most common site for GI bleeding in the dabigatran group (80.0% vs. 38.1%, p=0.014). CONCLUSIONS: The risk of GI bleeding was lower with dabigatran. The risk factors for GI bleeding with dabigtran were the first 100 days, age >65 years, and a history of previous GI bleeding.
Age Factors ; Aged ; Aged, 80 and over ; Anticoagulants/*adverse effects/therapeutic use ; Atrial Fibrillation/drug therapy ; Dabigatran/*adverse effects/therapeutic use ; Female ; Gastrointestinal Hemorrhage/*chemically induced/epidemiology/mortality ; Humans ; Incidence ; Kaplan-Meier Estimate ; Male ; Middle Aged ; Multivariate Analysis ; Odds Ratio ; Retrospective Studies ; Risk Factors ; Warfarin/*adverse effects/therapeutic use

BACKGROUND/AIMS: Recurrence of ischemic colitis (IC) has not been studied extensively. The aim of this study was to investigate the characteristics of recurrent IC in the community setting and to identify any risk factors. METHODS: We conducted a retrospective study in two community hospitals. Medical records of patients with IC from January 2007 to January 2013 were reviewed. Demographic details, clinical features, co-morbidities, concomitant use of medications, laboratory studies, imaging findings, endoscopic and histological features, surgery, hospital stay, and death within 30 days were collected. Patients were divided into two groups (recurrent IC group, non-recurrent IC group). RESULTS: A total of 118 patients with IC were identified. IC recurred in 10 patients (8.5%) during the study period. Half of the patients in the recurrent IC group were current smokers as compared to only 18.7% of patients in the non-recurrent group. In the recurrent IC group, 20.0% of patients never smoked as compared to 61.7% in the non-recurrent group (p=0.027). Abdominal aortic aneurysm (AAA) was more frequent in the recurrent IC group (40.0% vs. 4.7%; p=0.003). No differences in other clinical symptoms, CT scan findings, comorbidities, endoscopic features, or use of concomitant medications were observed between the two groups. The need for surgical intervention, blood transfusion, intensive care unit stay, mechanical ventilation, length of hospital stay, and anatomic location of affected segments did not differ between the two groups. CONCLUSIONS: IC recurred in 8.5% of patients during the six-year study period. Current smoking status and presence of AAA were identifying risk factors for recurrence of IC.
Aged ; Aged, 80 and over ; Aortic Aneurysm, Abdominal/diagnosis ; Body Mass Index ; Colitis, Ischemic/*diagnosis/pathology/radiography ; Colonoscopy ; Female ; Hospitals, University ; Humans ; Male ; Middle Aged ; Recurrence ; Retrospective Studies ; Risk Factors ; Severity of Illness Index ; Smoking ; Tomography, X-Ray Computed

Light intensity output is one of the determinants for adequate curing of visible light-cured materials. The aim of this survey was to evaluate the light intensity outputs (LIOs) of light curing units (LCUs) in dental clinics of Hospital Universiti Sains Malaysia (HUSM) and School of Dental Sciences, Universiti Sains Malaysia (USM). The respective LIOs of all functioning Quartz Tungsten Halogen (QTH) and Light Emitting Diode (LED) LCUs were tested using two light radiometers. For cordless LED LCUs, the testing procedure was done in situ and after being fully charged. Statistical analysis using Kruskal Wallis and Wilcoxon signed ranks tests were performed to compare the LIOs between groups and between the LIOs of in situ and post-charged cordless LED LCUs, respectively. The level of significance was set at 0.05 (p<0.05). The results revealed that 72.72%, 42.47% and 92% of QTH, cabled LED and cordless LED LCUs exhibited acceptable LIOs, respectively. Data analysis using Kruskal Wallis test showed a statistically significant difference between groups (p<0.05). The intergroup comparisons using multiple Mann Whitney test with Bonferroni correction revealed a significant difference between the LIOs of cordless LED and both QTH and cabled LED (p<0.017). The difference between the LIOs of in situ and post charged cordless LED LCUs was also significant (p<0.05). In conclusion, both QTH and cordless LED LCUs performed better in term of LIOs than cabled LED LCUs. Periodic testing of LCUs is essential to ensure optimal performance.

Aged, 80 and over ; Carcinoma, Basal Cell ; pathology ; radiotherapy ; Female ; Head and Neck Neoplasms ; pathology ; radiotherapy ; Humans ; Skin Neoplasms ; pathology ; radiotherapy

Diagnosis, Differential ; Erythema Multiforme ; diagnosis ; Erythema Nodosum ; diagnosis ; Female ; Humans ; Leg Dermatoses ; diagnosis ; Middle Aged ; Mycosis Fungoides ; diagnosis ; Skin Neoplasms ; diagnosis ; Sweet Syndrome ; diagnosis