18 research outputs found
Prevalence and factors associated with anxiety during the COVID-19 pandemic among Malaysians: a cross-sectional study
The COVID-19 pandemic is a significant public health threat with wide-reaching psychological implications. The drastic changes in lifestyle due to the implementation of the movement control order (MCO) were associated with adverse effects on mental health. This study aimed to examine the prevalence of anxiety among Malaysians during the COVID-19 pandemic and its associated factors. The following questionnaires were self-administered online through google form which included: (i) Generalised Anxiety Disorder-7; (ii) Short Boredom Proneness Scale; (iii) Short Scale for Measuring Loneliness in Large Surveys; and (iv) The World Health Organisation (WHO) well-being index. Higher scores denoted higher levels of anxiety, boredom, loneliness, and well-being. Out of the 543 participants, more than half (55.2%) reported mild (25.6%), moderate (13.8%) to severe (19.8%) anxiety. Multiple logistic regression showed higher odds of moderate to severe anxiety were reported among those divorced/separated/widowed (aOR 6.778, 95% CI [1.200, 38.296]), adults aged 25 to 34 years (aOR 2.038, 95% CI [1.049, 3.958]), 35 to 44 years (aOR 2.279, 95% CI [1.064, 4.882]), and with higher boredom levels (aOR 1.063, 95% CI [1.035, 1.092]). One in five Malaysians surveyed experienced severe anxiety. Adults within the working age range (between 25 and 44 years old) were at higher odds of having anxiety. Boredom increased the odds of anxiety compared to loneliness, well-being and coping. Thus, addressing the risk factors through public health messages is deemed important
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Amphiphilic Membrane Environments Regulate Enzymatic Behaviors of Salmonella Outer Membrane Protease
The role of an amphiphilic environment in the functional regulation of integral membrane proteins is well appreciated but how specific amphiphilic surrounding influences the conformational plasticity and function of a protein is less obvious. We focus on the Salmonella phosphoglycerate transport system (pgt)-encoded outer membrane protease E (PgtE), which plays an important role in tissue infiltration and survival of Salmonella enterica. Despite our understanding of its physiological functions, elucidation of its enzymatic behavior in response to the immediate amphiphilic surrounding is lacking. We monitor the proteolytic activity of PgtE reconstituted in Zwittergent 3-12 detergent micelles or a 1-palmitoyl-2-oleoyl-glycero-3-phosphocholine (POPC) bilayer and examine factors that influence its activity. We find, to our surprise, that PgtE, which is thought to elicit a rapid response toward various substrates, showed hysteretic enzymatic behavior, characterized by a prominent lag phase prior to achieving the exponential steady state in its detergent-stabilized form as well as in the outer membrane embedded native state in live bacteria. The lag phase was abolished under three conditions: preformation of an inactive detergent-stabilized PgtE-substrate complex without lipopolysaccharide (LPS), LPS-bound detergent-stabilized PgtE that had reached steady state velocity, or PgtE reconstituted into a POPC bilayer environment. Interestingly, detergent- and bilayer-stabilized PgtE showed comparable steady-state activity. And strikingly, lipopolysaccharide (LPS) becomes nonessential for the activation of PgtE when the protein is reconstituted in the phospholipid bilayer, contrasting a long-standing notion that LPS is required for proteases belonging to the omptin family to be proteolytically active. These findings suggest intriguing biological nuances for the proteolytic function of PgtE that were not well appreciated previously and offer new perspectives that may generally be applicable for omptins
Media Search Frequency, Source Credibility About e-Cigarette Health Information, and Motivation to Quit EC Among University Students in Chengdu, China
Li Wang,1,2,* Ching Sin Siau,2,* Nizam Baharom,3 Mohd Izzuddin Hairol,2 Lixin Huang,4 Lei Hum Wee2,5– 7 1Ya’an Polytechnic College, Ya’an, Sichuan, 625000, People’s Republic of China; 2Center for Community Health Studies (ReaCH), Faculty of Health Sciences, Universiti Kebangsaan Malaysia (UKM), Kuala Lumpur, 50300, Malaysia; 3Primer Healthcare Department, Faculty of Medicine and Health Sciences, Universiti Sains Islam Malaysia (USIM), Nilai, Negeri Sembilan, 71800, Malaysia; 4Chengdu Sport University, Chengdu, Sichuan, 610000, People’s Republic of China; 5School of Medicine, Faculty of Health & Medical Sciences, Taylor’s University, Subang Jaya, Selangor, 47500, Malaysia; 6Non-Communicable Diseases and Public Health Research Group, Faculty of Health and Medical Sciences, Taylor’s University, Subang Jaya, 47500, Malaysia; 7Digital Health and Innovations Impact Lab, Taylor’s University, Subang Jaya, 47500, Malaysia*These authors contributed equally to this workCorrespondence: Ching Sin Siau, Klinik Psikologi Kesihatan, Block G, Jalan Raja Muda Abdul Aziz, Kuala Lumpur, 50300, Malaysia, Email [email protected]: E-cigarettes (ECs) are gaining popularity among young people. This study aimed to assess university student vapers’ search frequency and source credibility of commonly used media in China, and their association with daily EC users’ motivation to quit EC use.Participants and Methods: This was a cross-sectional study involving an online quantitative survey in six universities in Chengdu, China. Participants answered questions on their EC use patterns, motivation to quit EC, use frequency and source credibility of media use. Hierarchical linear regression analyses were performed to determine the association between media search frequency and source credibility concerning EC health information with the motivation to quit EC.Results: There were a total of 325 participants (Mean age = 20.43, SD = 1.333). Video platforms and social media were ranked frequently used by the participants and were deemed to be more trustworthy. Perceived trustworthiness of online media was the most influential predictor of motivation to quit EC. Those who reported a higher frequency of accessing video platforms and medical health applications recorded higher motivation to quit EC use. Source credibility of news portals were associated higher motivation to quit EC. The association between higher nicotine dependence and lower motivation to quit EC was attenuated when media source credibility and trustworthiness of online media were added into the fully adjusted regression models.Conclusion: There is an association between media use frequency and source credibility to search for EC health information and motivation to quit vaping. More studies could be conducted to examine the effects of media use content on perceptions towards vaping and their motivation to quit vaping.Keywords: vaping, media search, health information, motivation to quit, college student
Doctors’ Job Satisfaction and Its Relationships With Doctor-Patient Relationship and Work-Family Conflict in China: A Structural Equation Modeling
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Targeting Plasmodium PI(4)K to eliminate malaria.
Achieving the goal of malaria elimination will depend on targeting Plasmodium pathways essential across all life stages. Here we identify a lipid kinase, phosphatidylinositol-4-OH kinase (PI(4)K), as the target of imidazopyrazines, a new antimalarial compound class that inhibits the intracellular development of multiple Plasmodium species at each stage of infection in the vertebrate host. Imidazopyrazines demonstrate potent preventive, therapeutic, and transmission-blocking activity in rodent malaria models, are active against blood-stage field isolates of the major human pathogens P. falciparum and P. vivax, and inhibit liver-stage hypnozoites in the simian parasite P. cynomolgi. We show that imidazopyrazines exert their effect through inhibitory interaction with the ATP-binding pocket of PI(4)K, altering the intracellular distribution of phosphatidylinositol-4-phosphate. Collectively, our data define PI(4)K as a key Plasmodium vulnerability, opening up new avenues of target-based discovery to identify drugs with an ideal activity profile for the prevention, treatment and elimination of malaria
Novel biphenyl ester derivatives as tyrosinase inhibitors: Synthesis, crystallographic, spectral analysis and molecular docking studies
tbx2a Is Required for Specification of Endodermal Pouches during Development of the Pharyngeal Arches
10.1371/journal.pone.0077171PLoS ONE810-POLN