Mohamad Rahal

Dr. Mohamad Rahal

orcid

Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
22 November 2022 in Membranes
Verified
Journal Article
Open access
PDF file
DHDalal Hammoudi Halat
Dalal Hammoudi Halat
SYSamar Nemer Younes
Samar Nemer Younes
NMNisreen Mourad
Nisreen Mourad
MRMohamad Rahal
Mohamad Rahal
Allylamines, naftifine and terbinafine, and the benzylamine, butenafine, are antifungal agents with activity on the fungal cell membrane. These synthetic compounds specifically inhibit squalene epoxidase, a key enzyme in fungal sterol biosynthesis. This results in a deficiency in ergosterol, a major fungal membrane sterol that regulates membrane fluidity, biogenesis, and functions, and whose damage results in increased membrane permeability and leakage of cellular components, ultimately leading to fungal cell death. With the fungal cell membrane being predominantly made up of lipids including sterols, these lipids have a vital role in the pathogenesis of fungal infections and the identification of improved therapies. This review will focus on the fungal cell membrane structure, activity of allylamines and benzylamines, and the mechanistic damage they cause to the membrane. Furthermore, pharmaceutical preparations and clinical uses of these drugs, mainly in dermatophyte infections, will be reviewed.

9 December 2014 in SpringerPlus
Verified
Journal Article
Open access
PDF file
ZSZeina M Shrayteh
Zeina M Shrayteh
MRMohamad Rahal
Mohamad Rahal
DMDiana Malaeb
Diana Malaeb
Hospitalized patients initially on intravenous antibiotics can be safely switched to an oral equivalent within the third day of admission once clinical stability is established. This conversion has many advantages as fewer complications, less healthcare costs and earlier hospital discharge. The three types of intravenous to oral conversion include sequential, switch, and step-down therapy. The aim of the study was to evaluate the practice of switching from intravenous to oral antibiotics, its types and its impact on the clinical outcomes. This was a retrospective observational study conducted in three Lebanese hospitals over a period of six months. Adult inpatients on intravenous antibiotics for 2 days and more were eligible for study enrollment. Excluded were patients admitted to care or surgery units, or those with gastrointestinal diseases, infections that require prolonged course of parenteral therapy, or malignancies. The study showed that among 452 intravenous antibiotic courses from 356 patients who were eligible for conversion, only one third were switched and the others continued on intravenous antibiotics beyond day 3 (P <0.0001). The mean duration of intravenous therapy of converted patients was markedly shorter than the non-converted (P <0.0001) with no significant change in the mean length of stay. Fluoroquinolones and macrolides were the most commonly converted antibiotics. However, the sequential therapy was the major type of conversion practiced in this study. Based on the study findings, a significant proportion of patients can be considered for switch. This emphasizes an important gap in the field of conversion from intravenous to oral antibiotic therapy and the need for integration and reinforcement of the appropriate Antibiotic Stewardship Programs in hospitals.

24 June 2022 in Education Sciences
Verified
Journal Article
Open access
PDF file
MDMariam Dabbous
Mariam Dabbous
AKAnwar Kawtharani
Anwar Kawtharani
IFIqbal Fahs
Iqbal Fahs
ZHZahraa Hallal
Zahraa Hallal
DSDina Shouman
Dina Shouman
Fouad SakrFouad Sakr
Fouad Sakr
(1) Background: There is a scarcity of data regarding game-based learning (GBL) in experiential pharmacy education; in addition, the impact of educational games on the attainment of intended learning outcomes and students’ motivation to actively learn and practice through non-traditional pedagogical tools are yet to be explored. (2) Methods: This was a prospective quasi-experimental study that introduced GBL into the Pharmacy Practice Experience course of the Bachelor of Pharmacy (BPharm) program at the Lebanese International University in Lebanon. Data collection took place between July and September 2021. The study objectives were to assess the impact of GBL on attaining intended learning outcomes, determine students’ motivation to engage in GBL, and assess the impact of this motivation on the attainment of learning outcomes. (3) Results: GBL was associated with a significantly higher exam average (mean difference = 7.152, p < 0.001). Moreover, an active learning motivation assessment scale (ALMAS) was constructed and validated; it was found to have good reliability as well as high sensitivity and specificity, and it determined a good level of motivation to engage in GBL. Game-based learners with higher motivation scores had significantly higher exam averages compared to those with lower scores (Beta = 0.296, 95% CI 0.110–0.545, p = 0.004). (4) Conclusion: GBL was associated with better attainment of intended learning outcomes. Students appear to be motivated to learn by this style of active learning, and motivation is prognostic of the attainment of learning outcomes.

26 June 2023 in BMC Public Health
Verified
Journal Article
Open access
PDF file
DHDalal Hammoudi Halat
Dalal Hammoudi Halat
SHSouheil Hallit
Souheil Hallit
SYSamar Nemer Younes
Samar Nemer Younes
MAMira AlFikany
Mira AlFikany
Sanaa M KhaledSanaa M Khaled
Sanaa M Khaled
MRMohamad Rahal
Mohamad Rahal
Background: High academic achievement, an important determinant of future success, is known to be influenced by many factors including dietary behavior, lifestyle and mental health, among others. The objectives of the current study were to explore university students’ nutritive habits, daily lifestyle, and mental status, and to scrutinize the associations between these factors and students’ academic achievement.Methods: A cross-sectional study was conducted among students of a private Lebanese university, using an electronic survey. Diet, eating habits, physical activity, sleep, and smoking were evaluated, and mental health was assessed using a validated Arabic version of the combined Depression, Anxiety, Stress Score (DASS-8). Academic achievement was measured using the Subjective Academic Achievement Scale (SAAS).Results: A total of 1677 students participated in the questionnaire. The results of a linear regression taking the SAAS score as the dependent variable, showed that students who have a non-scientific versus scientific major (Beta = 0.53), and having breakfast ≥ 4 days per week compared to less than 2 days (Beta = 0.28) were significantly associated with higher SAAS scores. More psychological distress (Beta = − 0.06) and a higher number of days of eating out (Beta = − 0.07) were significantly associated with lower SAAS scores.Conclusions: This is the first investigation on a Lebanese university students’ academic success in relation to lifestyle and mental profiles. Better academic achievement was demonstrated by students having healthier dietary and lifestyle habits, as well as less distressing mental status. Such results, in light of the compounded and unprecedented crises with which Lebanon has been assailed, suggest the need to focus on promoting healthy habits among students in higher education as a possible driver of better academic success.

26 July 2022 in BMC Nephrology
Verified
Journal Article
Open access
PDF file
SYSamar Nemer Younes
Samar Nemer Younes
NMNisreen Mourad
Nisreen Mourad
JSJihan Safwan
Jihan Safwan
MDMariam Dabbous
Mariam Dabbous
MRMohamad Rahal
Mohamad Rahal
Fouad SakrFouad Sakr
Fouad Sakr
Introduction: Good knowledge and early identification of chronic kidney disease (CKD) can help in preventing disease progression in its early stages and reducing undesired outcomes. The aim of the current study was to assess the level of public knowledge about CKD, determine predictors of better knowledge, and to construct and validate a CKD knowledge scale for public health assessment and research use. Methods: A community-based cross-sectional study was conducted using an electronic self-administered questionnaire. All people living in Lebanon and being 18 years of age and above were considered eligible for recruitment. CKD knowledge was assessed by a 37-item scale that was constructed by principal component analysis and then validated. The score of the CKD knowledge scale was computed from the extracted factors. A multivariable binomial logistic regression model evaluated the sociodemographic and clinical predictors of the knowledge score. Results: A total of 1308 participants were included. The scale items converged over 9 factors with Eigenvalue greater than 1 and explaining 53.26% of the total variance, and the total scale had a high Cronbach’s alpha of 0.804. All items of the scale significantly correlated with the full scale with correlation coefficients ranging from 0.082 to 0.558. The ROC curve analysis determined an optimal cutoff point of better knowledge at 47.5 with 70.6% sensitivity and 44.2% specificity. The CKD knowledge score had a median of 51.00 (IQR 47.00–55.00). Higher knowledge score was significantly associated with old age (ORa = 1.018, 95% CI 1.006–1.030, P = 0.003),, occupation (ORa = 3.919, 95% CI 2.107–7.288, P < 0.001), and recent renal function assessment (ORa = 2.314, 95% CI 1.532–3.495, P < 0.001). However, a lower knowledge score was significantly associated with lower level of education (ORa = 0.462, 95% CI 0.327–0.653, P < 0.001). Conclusion: A reliable tool to assess public knowledge and awareness about CKD was developed and validated. The overall knowledge was good, however, important gaps in CKD awareness were detected in some areas and subpopulations. Therefore, public health stakeholders need to implement targeted CKD educational activities to minimize the disease burden.

DHDalal Hammoudi Halat
Dalal Hammoudi Halat
SYSamar Nemer Younes
Samar Nemer Younes
JSJihan Safwan
Jihan Safwan
ZAZeina Akiki
Zeina Akiki
MAMarwan Akel
Marwan Akel
MRMohamad Rahal
Mohamad Rahal
COVID-19 has impacted mental health and affected education due to the shift to remote learning. The purpose of the current study was to assess the mental health of pharmacy students one year following the onset of the pandemic. A descriptive cross-sectional questionnaire was distributed to pharmacy students. The severity of depression, anxiety, and stress was assessed by the Depression Anxiety Stress Scale (DASS-21), and resilience was assessed by the Brief Resilience Scale (BRS). COVID-19-related economic, educational, and health stressors, and students’ vaccine attitudes were surveyed. Descriptive, bivariate, and multivariable analysis were used, and a p-value of <0.05 was considered significant. A total of 561 students participated; 37% had mild-to-moderate depression, 37% had severe-to-extremely-severe anxiety, and 52% demonstrated normal stress levels. Severe depression, anxiety, and stress were associated with smoking and feeling isolated due to COVID-19. Around 40% of students had low resilience, associated with smoking, being in the third or fourth year of pharmacy study, and the consumption of caffeinated beverages. The mean score of satisfaction with online learning was 60.3 ± 21.3%. Only 5% of participants were vaccinated, of which 87% trusted the benefits of vaccines and their role in controlling the pandemic. One year after the onset of COVID-19, depression, anxiety, stress, and low resilience were observed among pharmacy students; the investigation of the long-term mental effects of the pandemic on university students is warranted.