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15
result(s) for
"Alanazi, Salah K."
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The Correlation Between Hepatitis B Virus Precore/Core Mutations and the Progression of Severe Liver Disease
by
Dela Cruz, Damian
,
Sanai, Faisal M.
,
Al-Ashgar, Hamad I.
in
Adult
,
Aged
,
Amino Acid Substitution
2018
Viral mutations acquired during the course of chronic hepatitis B virus (HBV) infection are known to be associated with the progression and severity of HBV-related liver disease. This study of HBV-infected Saudi Arabian patients aimed to identify amino acid substitutions within the precore/core (preC/C) region of HBV, and investigate their impact on disease progression toward hepatocellular carcinoma (HCC). Patients were categorized according to the severity of their disease, and were divided into the following groups: inactive HBV carriers, active HBV carriers, liver cirrhosis patients, and HCC patients. Two precore mutations, W28
and G29D, and six core mutations, F24Y, E64D, E77Q, A80I/T/V, L116I, and E180A were significantly associated with the development of cirrhosis and HCC. Six of the seven significant core mutations that were identified in this study were located within immuno-active epitopes; E77Q, A80I/T/V, and L116I were located within B-cell epitopes, and F24Y, E64D, and V91S/T were located within T-cell epitopes. Multivariate risk analysis confirmed that the core mutations A80V and L116I were both independent predictors of HBV-associated liver disease progression. In conclusion, our data show that mutations within the preC/C region, particularly within the immuno-active epitopes, may contribute to the severity of liver disease in patients with chronic hepatitis. Furthermore, we have identified several distinct preC/C mutations within the study population that affect the clinical manifestation and progression of HBV-related disease. The specific identity of HBV mutations that are associated with severe disease varies between different ethnic populations, and so the specific preC/C mutations identified here will be useful for predicting clinical outcomes and identifying the HBV-infected patients within the Saudi population that are at high risk of developing HCC.
Journal Article
Association between IL-37 gene polymorphisms and risk of HBV-related liver disease in a Saudi Arabian population
2019
Interleukin-37 (IL-37) has recently been recognized as a strong anti-inflammatory cytokine having anti-tumor activity against hepatocellular carcinoma (HCC) in hepatitis B virus (HBV)-infected patients. HCC is a typical inflammation-related cancer, and genetic variations within the
IL-37
gene may be associated with the risk of HBV infection. Identification of the allelic patterns that genetically have a high disease risk is essential for the development of preventive diagnostics for HBV-mediated liver disease pathogenesis. In this study, we aimed to investigate the association between single nucleotide polymorphisms (SNPs) within the
IL-37
gene and disease sequelae associated with HBV infection. We genotyped ten
IL-37
SNPs in 1274 patients infected with HBV and 599 healthy controls from a Saudi Arabian population. Among the selected SNPs, two SNPs (rs2723175 and rs2708973) were strongly associated with HBV infection, and six SNPs (rs2723176, rs2723175, rs2723186, rs364030, rs28947200, rs4392270) were associated with HBV clearance, comparing healthy controls and HBV infected-patients respectively. A suggestive association of rs4849133 was identified with active HBV surface antigen (HBsAg) carrier and HBV-related liver disease progression. In conclusion, our findings suggest that variations at the
IL-37
gene may be useful as genetic predictive risk factors for HBV infection and HBV-mediated liver disease progression in the Saudi Arabian population.
Journal Article
The Trend of Antibiotic Consumption After the COVID-19 Pandemic: Approach to Future Outbreaks
by
Alkhathami, Majed
,
Alamri, Abdullah
,
Alsulaimani, Mujahid
in
Antibacterial agents
,
antibiotic consumption
,
Antibiotics
2024
Earlier reports suggested high rates of antibiotic utilization among COVID-19 patients despite the lack of direct evidence of their activity against viral pathogens. Different trends in antibiotic consumption during 2020 compared to 2019 have been reported.
The objective of this study is to assess the impact of COVID-19 pandemic on antibiotic consumption in the presence of active Antibiotic Stewardship Program.
This study represented a five years assessment of the consumption of the commonly prescribed antibiotics measured as DDDs/100-Bed Days. We analyzed the data by using nonparametric Friedman and Friedman tests to compare the antibiotic consumption before and during the three subsequent waves of COVID-19.
Antibiotic consumption through the DDDs/100-BD has shown reduction in the median of antibiotics consumption of most antibiotics during the period of COVID-19 as compared to the pre-COVID-19 period, which was significant for meropenem and ciprofloxacin, except colomycin that slightly increased. Significant reduction in the consumption of imipenem and meropenem during the second and third waves as compared to the pre-COVID period. Throughout the years, significant reductions were observed between 2018 and 2019 (p=<.001), 2018 and 2020 (p=0.008), and 2018 and 2022 (p=0.002).
The reduction in antibiotic consumption is attributed to the strong influence if the ASP and the reluctance of people to visit hospitals during the COVID-19 pandemic. Other related COVID-19 precautions such as physical distance, good hand hygiene, facemasks, that resulted in the prevention of secondary bacterial infections have contributed to the reduction in antibiotic utilization during the pandemic.
Journal Article
Computational screening of phytochemicals targeting mutant KRAS in colorectal cancer
2025
Colorectal cancer (CRC) is cancer of the colon or bowel. Every year, more than 1.8 million cases of colorectal cancer are reported, with 850,000 deaths. There are several genetic causes of this disease. However, one of the main reasons is the overexpressed KRAS gene that can cause uncontrolled cell division and tumor development. The present study is focused on the identification of potential phytochemicals that can inhibit the KRAS protein from being overexpressed in CRC. For this study, phytochemicals were retrieved from the IMPPAT library, which has 17,967 phytochemical compounds. The compounds were further screened based on the ADMET criteria. The screened compounds were then docked against the KRAS protein using a molecular docking approach, and the binding energies were calculated. Indicating a considerable affinity for interacting with the KRAS protein, it was shown that compound-1 had a binding energy of -9.7 kcal/mol upon analysis. Furthermore, for docking reasons, the anticancer medication fruquintinib, which has been authorized by the FDA, was used as a reference chemical. A binding energy of -9.4 kcal/mol was observed for the reference chemical, as was mentioned before. To find out the reactivity of the selected compound, DFT analysis was performed. The protein-ligand complex was also subjected to molecular dynamics (MD) simulation. Post simulation analysis, such as RMSD, RMSF, R
g
, and no of hydrogen bonds, indicated a stable protein-ligand complex.
Journal Article
Impact of Portraiture Photography on Orthodontic Treatment: A Systematic Review and Meta-Analysis
by
Alotha, Salah Nazal
,
Hammad Alrayes, Mashael Hamoud
,
Alam, Mohammad K
in
Clinical outcomes
,
Clinical trials
,
Cohort analysis
2023
Due to the clear depiction of facial aesthetics and other craniofacial parameters, portraiture photography (PP) is becoming more and more necessary in modern clinical practice. The studies chosen for this review's inclusion looked at how PP affected the orthodontic treatment and diagnostic procedure on the subjects who were watched in the studies. Studies published within the last decade precisely from 2013 were searched for across major online databases after devising a proper search strategy. Multiple reviewers created a specific data extraction form that was used for the investigation, followed by the evaluation of bias and the variables found in each of the chosen papers. This form was meant for the assessment for various variables encountered in this study. According to the meta-analysis, using PP was related with a statistically significant decrease in the risk of orthodontic treatment and diagnostic modalities, with odds ratios (OR) of 0.52 with a 95% confidence interval (CI) of (0.28, 0.96), and a relative risk (RR) of 0.66 with a CI of (0.45, 0.96). In orthodontics, PP is an important tool that offers useful data for diagnosis, treatment planning, and tracking treatment success. To validate the results of studies like ours, a sizable evidence sample is required due to the limited number of trials that have been performed in this area.
Journal Article
Healthcare Providers’ Experience with Saudi Arabia’s 937 Virtual Medical Call Centers and Telehealth
by
Alqahtani, Muqbil
,
Dhafar, Yahia
,
Alamri, Fahad
in
Call centers
,
Confidentiality
,
Correlation analysis
2024
This cross-sectional descriptive study evaluates the experiences and perceptions of healthcare providers (HCPs) regarding the 937 medical call center in Saudi Arabia, a key telemedicine initiative.
To assess HCP satisfaction, identify challenges, and provide recommendations for improvement.
Conducted from November 20th to December 15th, 2022, the study surveyed 454 HCPs, achieving a 90.5% response rate.
A majority (86.8%) of respondents were satisfied with the call center, valuing its ease of use and effectiveness in healthcare delivery. However, challenges such as the accuracy of remote medical assessments, the need for clearer telehealth regulations, and concerns over management support and consultation overlaps were identified. The study also highlights the importance of ongoing support and updates, comprehensive telehealth regulations, integration of more medical specialties, and improvements in system integration and data confidentiality.
The study underscores the need for strategic enhancements to the 937 call center to further improve healthcare accessibility and efficiency in Saudi Arabia. These enhancements are vital for aligning telehealth services with Saudi Arabia's healthcare objectives under Saudi Vision 2030.
Journal Article
Barriers and Facilitators of Pharmacoeconomic Studies: A Review of Evidence from the Middle Eastern Countries
by
AlAhmari, Abdullah K.
,
Mallhi, Tauqeer Hussain
,
Butt, Muhammad Hammad
in
Cost analysis
,
COVID-19
,
Disease
2022
The world is facing a continuous increase in medical costs. Due to the surge in disease prevalence, medical science is becoming more sensitive to the economic impact of medications and drug therapies. This brings about the importance of pharmacoeconomics, which is concerned with the effective use of health resources to optimize the efficiency and costs of medications of treatment for the best outcomes. This review was conducted to find out the potential barriers and facilitators to implementing pharmacoeconomic studies in the Middle Eastern region having both high- and low-income countries. The varying economies in the region depict diverse healthcare systems where implementation of pharmacoeconomics faces a large number of challenges and is also aided by numerous facilitators that contribute to the growth of its implementation. In this context, we have reviewed the status of pharmacoeconomics in Middle Eastern countries in research databases (Google Scholar, MEDLINE, Science Direct and Scopus) using keywords (“pharmacoeconomics”, “barriers”, “facilitators”, “Middle East”). The study reported that Yemen, Syria, Palestine, Iran, Iraq, Jordan and Lebanon are the lowest-income countries in the Middle East and the implementation of pharmacoeconomics is the poorest in these states. The UAE, Saudi Arabia and Israel are high-income rich states where economic aspects were comparatively better but still a large number of barriers hinder the way to its effective implementation. These include the absence of national governing bodies, the lack of data on the effectiveness of medications, the absence of sufficient pharmacoeconomic experts and the lack of awareness of the importance of pharmacoeconomics. The main facilitators were the availability of pharmacoeconomic guidelines, the encouragement of pharmacoeconomic experts and the promotion of group discussions and collaborations between researchers and policymakers. Cost-benefit analysis is still evolving in Middle Eastern countries, and there is a great need for improvement so that states can effectively benefit from cost analysis tools and utilize their health resources. In this regard, governments should develop national governing bodies to evaluate, implement pharmacoeconomics at the local and state levels and bring about innovation in the field through further research and development incorporating all sectors of pharmacy and pharmaceutics. The data presented in this research can further be extended in future studies to cover the various domains of pharmacoeconomics including cost-minimization analysis, cost-effectiveness analysis and cost-benefit analysis and their applications within the healthcare sectors of Middle Eastern countries.
Journal Article
Polyaniline/Glauconite Nanocomposite Adsorbent for Congo Red Dye from Textile Wastewater
by
Hamd, Ahmed
,
Elzanaty, Ali M.
,
Ahmed, Sayed A.
in
Adsorbents
,
Adsorption
,
Chemical properties
2022
Glauconite (Gl), a naturally occurring clay material, was utilized as an affordable and ecologically friendly adsorbent to explore its capturing capacity towards Congo red (CR) dye from textile industrial waste effluent. To improve adsorption and removal effectiveness, a modification technique utilizing polyaniline (PAN) was investigated. An X-ray diffractometer (XRD), a scanning electron microscope (SEM), and Fourier transformer infrared (FTI-R) were applied as strong familiar characterization techniques for all used adsorbents. The effects of starting concentration, contact duration, adsorbent dose, pH, and temperature on the adsorption process were also studied. The reusability of the adsorbent was studied over four adsorption cycles. The results show that PAN modification of Gl enhances the effectiveness of CR elimination. The clearance efficiency of raw and modified glauconite at 25 °C and pH 7 was 77% and 91%, respectively. The kinetics and isotherms of Congo red dye adsorption were investigated using batch studies to determine the impacts of various experimental conditions. The maximum adsorption capacity of the glauconite/polyaniline (Gl/PAN) nanocomposite rose from 11.9 mg/g for Gl to 14.1 mg/g in accordance with the isotherm analysis, which shows that the Langmuir isotherm properly characterizes the experimental data. The pseudo-second-order model (R2 = 0.998) properly expresses the experimental data. The reusability research proved that the adsorbents may be reused effectively. The overall results suggest that the modified Gl by PAN might be used as a low-cost, natural adsorbent for eliminating CR color from textile effluent.
Journal Article
Evaluation of time to sputum smear conversion and its association with treatment outcomes among drug-resistant tuberculosis patients: a retrospective record-reviewing study
by
Saifullah, Amna
,
Mallhi, Tauqeer Hussain
,
Algarni, Majed Ahmed
in
Bacteriology
,
Clinical outcomes
,
Control programs
2024
Background: This study examined the time to sputum smear and culture conversion and determinants of conversion, as well as variables associated with treatment outcomes among drug-resistant pulmonary tuberculosis (DR-PTB) cases. Methods: The electronic database and written medical records of patients were utilized to assess the sociodemographic, clinical, microbiological, and treatment characteristics and outcomes of study participants. Results: Among 736 patients with pulmonary tuberculosis (PTB), the mean age was 36.5 ± 16.5 years, with males comprising 53.4% and a mean weight of 47.76 ± 11.97 kg. The median time period for sputum smear conversion and sputum culture conversion was a month. The first-month culture conversion ( p < 0.001, aOR = 5.817, and 95% CI = 3.703–9.138) was the determinant of sputum smear conversion and receiver operating curve analysis with AUC = 0.881, 95% CI = 0.855–0.907, and p < 0.001, which showed a high level of predictive ability for the regression model for the initial sputum smear conversion. However, the first-month sputum conversion ( p < 0.001, aOR = 7.446, and 95% CI = 4.869–11.388) was attributed to sputum culture conversion, and the model has shown excellent predictive ability for regression with ROC curve analysis demonstrating AUC = 0.862, 95% CI = 0.835–0.889, and p < 0.001. A total of 63.2% of patients showed favorable treatment outcomes, with 63.1% of cases achieving treatment-cured status. The previous use of SLD, history of smoking, duration of illness ≤ 1 year, extensively drug-resistant tuberculosis, and first-month sputum conversion were the variables attributed to favorable treatment outcomes observed in drug-resistant pulmonary tuberculosis cases. ROC curve analysis with AUC = 0.902, 95% CI = 0.877–0.927, and p < 0.001) has shown outstanding ability for regression model prediction for the variables influencing treatment outcomes. Conclusions: Within 2 months of treatment, most patients had converted their sputum cultures and sputum smears. The determinants of early sputum smear and sputum culture conversion, as well as favorable treatment outcomes, were identified. These factors should be considered during the design and implementation of effective strategies for drug-resistant tuberculosis control programs.
Journal Article
Surveillance of Post-Vaccination Side Effects of COVID-19 Vaccines among Saudi Population: A Real-World Estimation of Safety Profile
by
Mallhi, Tauqeer Hussain
,
Butt, Muhammad Hammad
,
Alzarea, Abdulaziz Ibrahim
in
Adverse and side effects
,
Appetite loss
,
Biomedical materials
2022
Vaccines are considered to be the most beneficial means for combating the COVID-19 pandemic. Although vaccines against SARS-CoV-2 have demonstrated excellent safety profiles in clinical trials, real-world surveillance of post-vaccination side effects is an impetus. The study investigates the short-term side effects following the administration of the Pfizer-BioNTech and Oxford-AstraZeneca vaccines in Saudi Arabia. A cross-sectional quantitative study was conducted among the general population with age ≥ 18 years, from five regions (Central, Northern, Eastern, Southern, and Western Regions) of Saudi Arabia for a period of 6 months (July to December 2021). A self-administered study instrument was used to record the side effects among the COVID-19 vaccine recipients. Of the total 398 participants (males: 59%), 56.3% received Pfizer and 43.7% were vaccinated with AstraZeneca. Only 22.6% of respondents received the second dose of the COVID-19 vaccines. The most commonly reported side effects were pain at the injection site (85.2%), fatigue (61.8%), bone or joint pain (54.0%), and fever (42.5%). The average side effects score was 3.4 ± 2.2. Females, young people, and Oxford-AstraZeneca recipients had a higher proportion of side effects. The Oxford-AstraZeneca vaccine recipients complained more about fever (p < 0.001), bone and joint pain (p < 0.001), fatigue (p < 0.001), loss of appetite (p = 0.001), headache (p = 0.008), and drowsiness (p = 0.003). The Pfizer-BioNTech vaccinees had more pain and swelling at the injection site (p = 0.001), and sexual disturbance (p = 0.019). The study participants also reported some rare symptoms (<10%) including heaviness, sleep disturbance, fainting, blurred vision, palpitations, osteomalacia, and inability to concentrate. This study revealed that both Pfizer-BioNTech and Oxford-AstraZeneca administration was associated with mild to moderate, transient, short-lived side effects. These symptoms corroborate the results of phase 3 clinical trials of these vaccines. The results could be used to inform people about the likelihood of side effects based on their demographics and the type of vaccine administered. The study reported some rare symptoms that require further validation through more pharmacovigilance or qualitative studies.
Journal Article