الملخص
Litorilituus sediminis is a Gram-negative, aerobic, novel bacterium under the family of Colwelliaceae, has a stunning hypothetical protein containing domain called von Hippel-Lindau that has significant tumor suppressor activity. Therefore, this study was designed to elucidate the structure and function of the biologically important hypothetical protein EMK97_00595 (QBG34344.1) using several bioinformatics tools. The functional annotation exposed that the hypothetical protein is an extracellular secretory soluble signal peptide and contains the von Hippel-Lindau (VHL; VHL beta) domain that has a significant role in tumor suppression. This domain is conserved throughout evolution, as its homologs are available in various types of the organism like mammals, insects, and nematode. The gene product of VHL has a critical regulatory activity in the ubiquitous oxygen-sensing pathway. This domain has a significant role in inhibiting cell proliferation, angiogenesis progression, kidney cancer, breast cancer, and colon cancer. At last, the current study depicts that the annotated hypothetical protein is linked with tumor suppressor activity which might be of great interest to future research in the higher organism.
الملخص
@#Introduction: Positive professional practice environments are crucial to safeguard a healthy and safe working conditions for health workforce, including nurses; so as to ensure provision of quality healthcare and safety of patient. Methods: This was a cross-sectional study to assess nurses’ perceptions towards nursing practice environment and factors associated with their perceptions. A validated Practice Environment Scale of the Nursing Work Index (PESNWI) questionnaire was administered to nurses working in two Ministry of Health hospitals. The questionnaire comprises of five subscales: Participation, Foundation, Managers Support, Workforce Adequacy and Physician/Nurse Relations. Mean scores of >2.50 were considered as favourable, and ≤2.50 were considered as unfavourable. Simple linear and multiple linear regression analysis were employed to identify factors associated with their perceptions. Analysis was carried out using STATA version 14.0. Results: A total of 366 respondents took part in the study, with a response rate of 98.4%. Majority were working shift (89.6%) and working extended hours (62.3%). In general, the nursing practice environments were rated as favourable. Overall mean score was 2.90±0.03 and four out of five subscales’ mean scores were >2.50. Foundation for quality nursing care was perceived as the most favourable subscale, while workforce adequacy was perceived as the least favourable. There were statistically significant association between working extended hours, doing double shift and working during day off with perceived unfavourable workforce adequacy. Conclusion: Nursing practice environment was perceived as favourable in the studied hospitals. Policy makers, service providers, and hospital managers could explore further on human resource planning and management of nursing personnel to tackle the issue of nurse staffing in the country.
الملخص
Arabian horse breeds (Equus caballus L.) are renowned for elegance, endurance and their contribution to Thoroughbreds. In heredity, the mitochondrial (mt) genome is maternally inherited and represents extensive genetic diversity. The mt genomes of Seglawi and Hadban horse breeds of Saudi Arabia were sequenced to decipher the genetic variations in the coding and non-coding regions. We observed that the coding region of mt genome has 11 and 34 amino acid variations in Seglawi and Hadban breeds, respectively. Sequencing analyses of COX1 gene indicated highest variations of which, 5 in Seglawi and 8 in Hadban followed by the NADH5 gene. The mitochondrial genes of respiratory chain showed positive selections with respect to different environments. Our data also highlighted that the Hadban breed had much higher nucleotide changes as compared to Seglawi and together they formed individual branches in phylogenetic tree. However, the tree shows that they were relatively branched to Arabian horse breeds. This study on two Arabian horses shed light on variations among mt genes and their phylogenetic relationship with other horse breeds.