Multi-meter fiber-delivery and pulse self-compression of milli-Joule femtosecond laser and fiber-aided laser-micromachining

We report on damage-free fiber-guidance of milli-Joule energy-level and 600-femtosecond laser pulses into hypocycloid core-contour Kagome hollow-core photonic crystal fibers. Up to 10 meter-long fibers were used to successfully deliver Yb-laser pulses in robustly single-mode fashion. Different pulse propagation regimes were demonstrated by simply changing the fiber dispersion and gas. Self-compression to ~50 fs, and intensity-level nearing petawatt/cm(2) were achieved. Finally, free focusing-optics laser-micromachining was also demonstrated on different materials.

Management of the perineal wound after abdominoperineal resection

Although many options are available for the management of perineal wounds after abdominoperineal resection, ranging from direct closure to flap reconstruction, treatment remains challenging. A better understanding of the aims, drawbacks and progress in perineal wound management after abdominoperineal rectal resection can help the surgeon make better choices for each patient, but it is very difficult to propose a single, optimal, evidence-based procedure for the management of pelvic exenteration. Recent progress provided by the extralevator abdominoperineal resection technique and perforator flap concepts have changed our conception of reconstruction leading to the different technical options highlighted in this review.

Lower vitamin D status is more common among Saudi adults with diabetes mellitus type 1 than in non-diabetics

Background

Vitamin D deficiency is an increasingly recognized comorbidity in patients with type 1 diabetes mellitus (DMT1), suggesting that vitamin D deficiency might play a role in DMT1. We aimed to determine and compare the vitamin D status of Saudi adults with and without DMT1.

Methods

A total of 60 Saudi adults with DMT1 from the Diabetes Clinics and 60 non-DM, healthy controls were included in the study. The mean age for those with DMT1 was 25.9 ± 16.1 years versus 36.7 ± 3.6 years among the controls. We measured serum 25-hydroxy vitamin D (25OHD), calcium, cholesterol, blood glucose, HDL, and triglycerides and compared the results between the DMT1 group and control subjects.

Results

Both the DMT1 and healthy groups had vitamin D deficiency. The mean levels of 25OHD were significantly lower in the DMT1 adults than in the controls (28.1 ± 1.4 nmol/L versus 33.4 ± 1.6 nmol/L). In the DMT1 adults, 66.7% were mildly, 31.7% moderately, and 3.3% severely vitamin D deficient as compared with 41.7% (mildly), 31.7% (moderately), and 5% (severely) in the control group. Overall, 100% of the DMT1 adults and 78% of the healthy children were vitamin D deficient.

Conclusion

The prevalence of vitamin D deficiency among DMT1 adults was relatively high. Therefore, screening for vitamin D deficiency and supplementation for this population should be warranted.

Hypocycloid-shaped hollow-core photonic crystal fiber Part I: arc curvature effect on confinement loss

We report on numerical and experimental studies showing the influence of arc curvature on the confinement loss in hypocycloid-core Kagome hollow-core photonic crystal fiber. The results prove that with such a design the optical performances are strongly driven by the contour negative curvature of the core-cladding interface. They show that the increase in arc curvature results in a strong decrease in both the confinement loss and the optical power overlap between the core mode and the silica core-surround, including a modal content approaching true single-mode guidance. Fibers with enhanced negative curvature were then fabricated with a record loss-level of 17 dB/km at 1064 nm.

Pamidronate treatment of children with moderate-to-severe osteogenesis imperfecta: a note of caution

BACKGROUND/AIMS

Bisphosphonates have been reported to decrease fractures related to osteogenesis imperfecta (OI). We assessed the efficacy and long-term safety of pamidronate therapy in patients with moderate-to-severe OI.

METHODS

We conducted an open-label uncontrolled study in 14 boys and 13 girls whose mean age was 6.8 years at baseline. Intravenous pamidronate, 1 mg/kg/day, was given for 3 consecutive days every 4 months for 2-6 years, with physical therapy and orthopedic surgery as appropriate. Mobility score, fracture rate, height, bone mineral density (BMD) and bone healing were evaluated throughout follow-up.

RESULTS

In 24 (89%) patients, the fracture rate decreased to <or=2/year and/or the mobility score improved. The remaining 3 (11%) patients continued to experience more than 2 fractures per year with mobility scores <2 despite significant BMD gains. Delayed radiographic fracture healing (>6 months) occurred in 8 (29.6%) patients; their BMD gains, baseline age and treatment duration were not significantly different from those in the other patients. Tolerance was good.

CONCLUSION

Pamidronate with physiotherapy and orthopedic management improved outcomes without delaying fracture healing in 19 (70%) of 27 patients. Delayed fracture healing occurred in 8/27 patients. Pamidronate should be reserved for severe OI with multiple fractures and/or flattened vertebras.

A 6-month "self-monitoring" lifestyle modification with increased sunlight exposure modestly improves vitamin D status, lipid profile and glycemic status in overweight and obese Saudi adults with varying glycemic levels

Background

The over-all age-adjusted prevalence of diabetes mellitus type 2 (DMT2) in Saudi Arabia is unprecedented at 31%. Aggressive measures should be done to curb down increasing incidence. In this prospective 6-month study we aim to determine whether a self-monitoring, life-style modification program that includes increased sunlight exposure confer improvement in vitamin D status and health benefits among adult Saudi overweight and obese patients with varying glycemic status.

Methods

A total of 150 overweight and obese Saudi adults with varying glycemic status aged 30–60 years were included in this study. They were divided into 3 groups (Non-DMT2, Pre-diabetes and DMT2). Baseline anthropometrics and blood glucose were taken at baseline and after 6 months. Fasting blood sugar, lipid profile, calcium, albumin and phosphate were measured routinely. Serum 25(OH) vitamin D was measured using standard assays. Within the time period they were instructed to reduce total intake of fat, increased fiber intake and increase sun exposure.

Results

In all groups there was a significant improvement in vitamin D levels as well as serum triglycerides, LDL- and total cholesterol. However, a significant increase in serum glucose levels was noted in the non-DMT2 group, and a significant decrease in HDL-cholesterol in both non-DMT2 and pre-diabetes group. In the pre-diabetes group, 53.2% were able to normalize their fasting blood levels after 6 months, with 8.5% reaching the DMT2 stage and 38.3% remaining pre-diabetic. In all groups there was a significant increase in the prevalence of hypertension.

Conclusion

Improving vitamin D status with modest lifestyle modifications over a short-period translates to improvement in lipid profile except HDL-cholesterol among overweight and obese Saudi adults, but not BMI and blood pressure. Findings of the present study merit further investigation as to whether full vitamin D status correction can delay or prevent onset of DMT2.

Design and fabrication of hollow-core photonic crystal fibers for high-power ultrashort pulse transportation and pulse compression

We report on the recent design and fabrication of kagome-type hollow-core photonic crystal fibers for the purpose of high-power ultrashort pulse transportation. The fabricated seven-cell three-ring hypocycloid-shaped large core fiber exhibits an up-to-date lowest attenuation (among all kagome fibers) of 40 dB/km over a broadband transmission centered at 1500 nm. We show that the large core size, low attenuation, broadband transmission, single-mode guidance, and low dispersion make it an ideal host for high-power laser beam transportation. By filling the fiber with helium gas, a 74 μJ, 850 fs, and 40 kHz repetition rate ultrashort pulse at 1550 nm has been faithfully delivered at the fiber output with little propagation pulse distortion. Compression of a 105 μJ laser pulse from 850 fs down to 300 fs has been achieved by operating the fiber in ambient air.

Comparisons in childhood obesity and cardiometabolic risk factors among urban Saudi Arab adolescents in 2008 and 2013

BACKGROUND

We aimed to compare the prevalence of childhood obesity and other cardiometabolic risk factors from two independent cohorts (2008 and 2013) in Riyadh, Saudi Arabia.

METHODS

A total of 4549 adolescents aged 12-18 years [2454 boys, 2095 girls], taken from two independent cohorts, 5 years apart (2008 and 2013), were included. Anthropometrics were measured, and fasting blood samples were taken to ascertain glucose and lipid profile.

RESULTS

The overall prevalence of obesity was significantly higher in 2013 [15.3 (95% confidence interval 13.7-16.9)] than 2008 [12.6 (11.3-13.9)] (P = 0.012). Stratified by sex, the prevalence of obesity among boys was significantly higher in 2013 than 2008 [2008 = 12.0 (10.3-13.7) versus 2013 = 17.4 (15.1-19.7); P < 0.001]. The age groups 13 and 15 years had a significantly higher mean triglycerides in 2013 than 2008 (P-values 0.003 and <0.001, respectively) and lower mean HDL-cholesterol also in the 13 years old age group (P < 0.001).

CONCLUSIONS

The prevalence of childhood obesity in Saudi Arabia has increased in particular age groups (13-15 years) during a 5-year span. Special attention is warranted in these vulnerable age groups, particularly in boys, as cardiometabolic risk factors appear to worsen.

Hypocycloid-shaped hollow-core photonic crystal fiber Part II: cladding effect on confinement and bend loss

We report on numerical and experimental studies on the influence of cladding ring-number on the confinement and bend loss in hypocycloid-shaped Kagome hollow core photonic crystal fiber. The results show that beyond the second ring, the ring number has a minor effect on confinement loss whereas the bend loss is strongly reduced with the ring-number increase. Finally, the results show that the increase in the cladding ring-number improves the modal content of the fiber.

Millijoule laser pulse delivery for spark ignition through kagome hollow-core fiber

We report on power handling oriented design of kagome lattice hollow-core fiber and demonstrate through it for the first time nanosecond laser pulses induced spark ignition in a friendly manner. Two different core designs and transmission bands are investigated and evaluated. The energy threshold damage was measured to be in excess of the 10 mJ level and the output power density is approaching the TW/cm2 after focusing; demonstrating the outstanding ability of such fiber for high power delivery.

Ultra low-loss hypocycloid-core Kagome hollow-core photonic crystal fiber for green spectral-range applications

We report on the development of a hypocycloidal-core Kagome hollow-core photonic crystal fiber guiding, with low transmission loss in the 450-650 nm visible spectral range. Transmission loss records have been achieved with 70  dB/km at 600 nm, and 130  dB/km at 532 nm. As a demonstration of the fiber potential applications, we report on a compact 600 THz wide Raman comb generator, centered around 532 nm, and on a 10 W average power frequency-doubled Yb-fiber picosecond laser beam delivery, along with its use for organic material laser micro-processing.

A pharmacophore screening approach of homeopathic phenols for a renovated design of fragment-optimized Bauhiniastatin-1 as a drug against acromegaly

OBJECTIVE

Acromegaly is a fatal and chronic disease that is caused by the abnormal secretion of growth hormone (GH) by the pituitary adenoma or pituitary tumor, resulting in an increased circulated concentration of insulin-like growth factors 1 (IGF-1), where in most of the cases it is secreted by a pituitary tumor. Higher levels of GH cause an increase in IGF-1 in the liver leading to multiple conditions such as cardiovascular diseases, glucose imbalance, cancer, and sleep apnea. Medical treatments such as surgery and radiotherapy can be used as the first choice of patients; however, specified human growth hormone control should be an essential treatment strategy due to an incidence rate of 0.2-1.1 yearly. Therefore, the main focus of this study is to develop a novel drug for treating acromegaly by exploiting medicinal plants that have been screened using phenol as a pharmacophore model to identify target therapeutic medicinal plant phenols.

MATERIALS AND METHODS

The screening identified thirty-four pharmacophore matches of medicinal plant phenols. These were selected as suitable ligands and were docked against the growth hormone receptor to calculate their binding affinity. The candidate with the highest screened score was fragment-optimized and subjected to absorption, distribution, metabolism, and excretion (ADME) analysis, in-depth toxicity predictions, interpretation of Lipinski's rule, and molecular dynamic simulations to check the behavior of the growth hormone with the fragment-optimized candidate.

RESULTS

The highest docking energy was calculated as -6.5 K/mol for Bauhiniastatin-1. Enhancing the performance of Bauhiniastatin-1 against the growth hormone receptor with fragment optimization portrayed that human growth hormone inhibition can be executed in a more efficient and better way. Fragment-optimized Bauhiniastatin-1 (FOB) was predicted with high gastrointestinal absorption, a water solubility of -2.61 as soluble, and synthetic accessibility of 4.50, achieving Lipinski's rule of 5, with low organ toxicity prediction and interpreting a positive behavior against the targeted protein. The discovery of a de novo drug candidate was confirmed by the docking of fragment-optimized Bauhiniastatin-1 (FOB), which had an energy of -4,070 Kcal/mol.

CONCLUSIONS

Although successful and completely harmless, present healthcare treatment does not always eradicate the disease in some individuals. Therefore, novel formulas or combinations of currently marketed medications and emergent phytochemicals will provide new possibilities for these instances.

Sclerotherapy for hemorrhoidal disease: systematic review and meta-analysis

BACKGROUND

This systematic review and meta-analysis aimed to evaluate the safety and efficacy of sclerotherapy methods for hemorrhoidal disease (HD) over the past 40 years.

METHODS

The review followed the 2020 Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. A comprehensive literature search was conducted, including studies reporting the use of sclerotherapy in patients with HD. Study eligibility criteria were defined, and data were extracted independently by the authors. Random-effects meta-analyses were performed to assess outcomes of interest.

RESULTS

Out of 1965 records identified, 44 studies met the inclusion criteria, involving 9729 patients. The majority of studies were conducted in Japan, followed by the UK, Italy, and Portugal. The median age of participants was 52 years, and the majority were male. The Goligher grade distribution indicated varying degrees of HD severity. Sclerotherapy was predominantly administered through anoscopy, with polidocanol being the most commonly used agent. The procedure was generally performed without pre-injection analgesia. The meta-analysis of 14 randomized controlled trials (RCTs) revealed that sclerotherapy was not inferior to control interventions in terms of success rate (risk ratio [RR] 1.00, 95% CI 0.71-1.41) and recurrence rate (RR 1.11, 95% CI 0.69-1.77), while resulting in fewer complications (RR 0.46, 95% CI 0.23-0.92).

CONCLUSIONS

This systematic review highlights the safety and efficacy of sclerotherapy for HD, which yields similar success rates and fewer complications compared to other conservative or surgical approaches. Further research is warranted to optimize sclerotherapy techniques and evaluate long-term outcomes.

REGISTRATION

PROSPERO 2023 CRD42023396910.

A one-health approach to design an mRNA-based vaccine candidate against the lumpy skin disease virus as an alternative to live-attenuated vaccines

OBJECTIVE

Recently, lumpy skin disease (LSD) has been spread over the Asian, European, and Middle Eastern regions making it a significant hazard to the chain of cattle production, milk production, and human milk consumption, requiring prompt attention. Lumpy skin disease virus has high morbidity and low fatality rates, but its infections have led to terrible economic and agricultural consequences. Although live-attenuated vaccines have been commercialized, farmers in different regions have not taken them well because of the allergic responses against the vaccines. The study aims to develop an mRNA-based vaccine candidate for LSDV, using immunoinformatic approaches to minimize allergenicity and homology while maximizing immunogenic potential.

MATERIALS AND METHODS

The study used extensive immunoinformatic approaches to shortlist five proteins from the LSDV genome that belong to the transmembrane region and are crucial in early viral interaction with host cells. The B-cell and T-cell-specific epitopes were chosen based on non-allergenicity, antigenicity, non-homology, surface accessibility, and lower IC50 inhibition values. The construct's stability, hydrophilicity, and antigenic potential were analyzed using the instability index, Grand Average of Hydropathicity (GRAVY) index, and antigenicity, respectively.

RESULTS

We selected a total of 34 epitopes, consisting of 12 B-cell-specific epitopes and 22 T-cell-specific epitopes. These epitopes were chosen based on their characteristics such as non-allergenicity, antigenicity, non-homology, surface accessibility, and lower IC50 inhibition values. Specifically, 11 epitopes were selected for Major Histocompatibility Complex-I, and another 11 epitopes were chosen for Major Histocompatibility Complex-II. The inclusion of the RS09 adjuvant enhanced the immunogenic potential of the vaccine. The instability index was found to be 38.60. Additionally, the GRAVY index, indicating hydrophilicity, was calculated as -0.151. Furthermore, the antigenicity value of 0.6073 confirmed its potential to elicit an immune response. Further supporting its immunogenic potential, strong immune stimulation was observed, with IgM+IgG titers reaching 6,000 (arbitrary units) and IFNg titers measuring 400,000 ng/mL. These results provide additional evidence of the vaccine's ability to stimulate a robust immune response.

CONCLUSIONS

The study results indicate that the developed mRNA-based vaccine candidate for LSDV has high immunogenic potential and could serve as an effective alternative to live-attenuated vaccines. Further experimental validations are required to test its efficacy. The study also highlights the potential of the One-Health approach to tackle non-zoonotic diseases that have significant consequences for the environment and humanity.

CW hollow-core optically pumped I₂ fiber gas laser

Continuous wave lasing of a hollow-core fiber gas laser (HOFGLAS) is achieved with molecular iodine in the 1280-1340 nm region when optically pumped at 532 nm.

Determining the 3-substituted Coumarins inhibitory potential against the HslV protease of E. coli

OBJECTIVE

The growing bacterial resistance towards classical antibiotics demands the development of novel approaches for the effective treatment of potentially fatal bacterial infections in humans. Proteostasis is crucial for the survival of every living cell, as several important physiological functions depend on well-regulated proteostasis. Within bacteria, the regulation of proteostasis relies on AAA+ (Adenosine 5'-triphosphatases associated with diverse cellular activities), ATPases, such as the HslVU complex (heat shock locus gene products U and V), along with other proteases. The HslVU protease/chaperon complex is thought to be the progenitor of the eukaryotic proteasome that regulates proteostasis mostly in prokaryotes. This study aimed to determine the inhibitory potential of 3-substituted coumarin derivatives against Escherichia coli heat shock locus V (HslV) protease.

MATERIALS AND METHODS

In this study, twenty-three derivatives of 3-substituted coumarin were assessed for their inhibitory potential against E. coli HslV protease using both in-vitro and in-silico techniques.

RESULTS

Among all the tested compounds, US-I-64, US-I-66, US-I-67, and US-I-68 displayed notable inhibitory potential against the HslV protease, showing IC50 (half maximal inhibitory concentration) values ranging from 0.2 to 0.73 μM. Additionally, the inhibitory potential of these compounds against the eukaryotic proteasome was also evaluated using a separate in-silico study. It was found that these compounds did not bind with the proteasomal active site, suggesting no apparent side effects of these lead molecules.

CONCLUSIONS

These identified HslV protease inhibitors can be used for the development of novel and safer anti-bacterial drugs.

Cyberloafing behaviours in nursing: The role of nursing stressors

AIM

To assess the prevalence of minor and serious cyberloafing behaviours among nurses and examine the impact of the nursing stressors on nurses' cyberloafing behaviours.

BACKGROUND

Cyberloafing could have a negative influence on employees' job performance, but it also has been argued that it could serve as a coping mechanism to deal with stressful work environments.

DESIGN

A cross-sectional descriptive, correlational design.

METHODS

Data were collected between September and December 2020 from a convenience sample of staff nurses (N = 291) providing care at a tertiary hospital in Saudi Arabia. Sample characteristics, nursing stressors and cyberloafing behaviours information were collected using self-reported questionnaires. Descriptive, bivariate and multivariate analyses were performed.

FINDINGS

Nurses in Saudi Arabia exhibited low levels of minor and serious cyberloafing behaviours. However, they engaged more frequently in minor cyberloafing behaviours more than serious cyberloafing behaviours. Stressors and Internet usage frequency influenced the frequency of minor and serious cyberloafing behaviours. Level of education and nationality impacted serious cyberloafing behaviours only.

CONCLUSION

Nursing stressors were associated with cyberloafing behaviours. Other studies on cyberloafing and job stress yielded inconsistent results. Efforts should be taken to avoid the adverse effects of cyberloafing by establishing a clear policy on using the advanced technology for non-work purposes.

Side chain inset of neurogenerative amino acids to metalloproteins: a therapeutic signature for huntingtin protein in Huntington's disease

OBJECTIVE

Huntington's disease is a dominant autosomal inherited neurodegenerative disease that results in progressive impairment, characterized by dementia, chorea, and behavioral and cognitive decline. The objective of this study was to investigate the potential activity of metalloproteins against the huntingtin protein using various insertion-based engineering computational methods. Metalloproteins, metal protein complexes involved in important biochemical and physiological processes, were explored as potential drug candidates for Huntington's disease.

MATERIALS AND METHODS

A total of 18 metalloproteins were selected as drug candidates and studied to assess their potential inhibitory effects on the huntingtin protein. The screening process was based on the lowest binding energy. The metalloprotein with the lowest docking score was chosen for side chain insertion of neurogenerative amino acids. The engineered metalloprotein was then evaluated based on physiochemical properties, allergenicity, toxicity, and surface accessibility. Cloning and expression analysis was performed to further investigate its potential as a therapeutic agent.

RESULTS

The metalloprotein chosen for side chain insertion, cytochrome C oxidase, showed promising results. It was computed as a probable non-allergen and exhibited no toxic domains, indicating its non-toxic nature. Additionally, it demonstrated a strong binding affinity with the huntingtin protein, with a binding energy of -1,253.3 Kcal/mol.

CONCLUSIONS

Metal-based proteins, when engineered with additional neurogenerative amino acids, hold potential as drug candidates for treating neurodegenerative diseases such as Huntington's disease. The successful development of these engineered metalloproteins could offer therapeutic advantages. Further testing, both in vitro and in vivo, is necessary to evaluate their efficacy and validate their potential activity as novel drugs for the treatment of neurodegenerative diseases.

The comparison of self-management group education and the standard care for patients with type 2 diabetes mellitus: An updated systematic review and meta-analysis

To investigate the efficacy of self-management group education versus the standard care for patients with type 2 diabetes mellitus (DM). An electronic search was performed in nine databases including PubMed for selecting eligible studies. Meta-analysis was used for pooling of the results. Of 3446 records screened, we included ten studies for this systematic review and meta-analysis. Regarding assessment of effectiveness, there was a significant superiority reported in the intervention group when compared to the usual/standard care (standardized mean difference [95% confidence interval] = 0.24 [0.15; 0.32]). The intervention group had a significant reduction in the levels of hemoglobin A1C (HbA1C), fasting blood glucose, low-density lipoprotein, total cholesterol, and body mass index compared to the usual/standard care (p < 0.05). Moreover, no significant difference was observed in the levels of high-density lipoprotein, systolic blood pressure (SBP), or diastolic blood pressure (DBP) between the two groups (p > 0.05). Self-management group education interventions are recommended in patients with type 2 DM for their effectiveness in different clinical aspects.

Misconceptions about multiple sclerosis and pregnancy in the Qassim region in 2021-2022: a cross-sectional study

OBJECTIVE

Multiple sclerosis (MS) is a disease with higher female prevalence, and the majority of patients are of childbearing age. Thus, pregnancy concerns are important for patients with MS and their families. Improving the understanding of the effects of pregnancy on the progress of MS could improve the knowledge about pregnancy-related issues in MS patients. The aim of this study is to evaluate the general knowledge of Saudi adults living in the Qassim region regarding pregnancy-related relapses in relapsing-remitting MS (RRMS) and to identify misconceptions regarding pregnancy, breastfeeding, and the use of oral hormonal contraceptives among female MS patients.

SUBJECTS AND METHODS

A representative random cluster sample of 337 participants was used in this cross-sectional study. All participants were living in one of the following cities in the Qassim region: Buraydah, Unaizah, and Alrrass. Data collection was done between February 2022 and March 2022 using a self-administered questionnaire.

RESULTS

The overall mean knowledge score was 7.42 (SD 4.21), with poor, moderate, and good knowledge representing 77.2%, 187%, and 4.2% of the sample, respectively. Higher knowledge scores were associated with age less than 40 years, being a student, knowing about MS, and knowing someone with MS. Other variables such as gender, educational level, and residence location did not show significant differences regarding the knowledge score.

CONCLUSIONS

Our results demonstrate that knowledge and attitude are suboptimal among the Qassim population regarding the effects of MS on pregnant patients, pregnancy outcomes, breastfeeding, and usage of contraceptive methods, with 77.2% showing poor total knowledge scores.

Halogens engineering-based design of agonists for boosting expression of frataxin protein in Friedreich's ataxia

OBJECTIVE

Decreased expression of the mitochondrial protein frataxin is the cause of the neurodegenerative disorder Friedreich's ataxia. In patients with cardiac disorders, the death rate of this disease is very high, up to 66%. In order to combat Friedreich ataxia, which is a potentially toxic disorder, de novo drug discovery and design have been created utilizing the approach of compound engineering with halogens. This study aimed to investigate the potential for effective treatment of Friedreich ataxia.

MATERIALS AND METHODS

The screening of twenty different agonist compounds was carried out in order to find the most promising agonist compound that may be used for molecular docking prediction against the Frataxin Protein. The compound with the lowest binding energies is then optimized by halogens. The final candidate's drug-like properties are identified through Absorption, Distribution, Metabolism, Excretion, and Toxicity (ADMET) profiling. Lipinski's rule of five was checked. Molecular dynamic stimulations were evaluated.

RESULTS

The most potent agonist compound was identified out of twenty different compounds utilizing a docking approach against the Frataxin Protein. The compound with the lowest binding energies was next subjected to optimization by halogens. The optimized agonist 9-[1-[(1S, 5R)-8, 8-dimethyl-8-azoniabicyclo[3.2.1]octan-3-yl]triazol-4-yl]fluoren-9-ol  has higher binding energy of -10.4Kcal/mol with molecular weight of 705.63 g/mol. Drug-like properties are identified through ADMET profiling, having water solubility of about -7.59, skin permeation -7.08 cm/s, bioavailability score 0.17, and high GI absorption. The candidate fulfills the Lipinski rule of five and portrays efficient molecular dynamic stimulations.

CONCLUSIONS

The selected agonist is one of the most potent compounds in increasing Frataxin protein expression. Furthermore, optimization with halogens can be a productive approach to improve the candidate's drug efficacy. The development of effective medications for the treatment of Friedreich ataxia would be aided by the results of these computational investigations.

Public knowledge of food poisoning, risk perception and food safety practices in Saudi Arabia: A cross-sectional survey following foodborne botulism outbreak

To investigate food poisoning knowledge, risk perception and safe food handling practices among Saudi Arabian public following foodborne botulism outbreak. A cross-sectional survey targeting the Saudi Arabian public between May 6 to 20, 2024, following the first foodborne botulism outbreak. Infectious disease and public health experts developed survey questions according to Saudi Public Health Authority and Ministry of Health (MOH) guidelines, and distributed surveys through social media. Of 3779 participants, 73.1% were female and 50.1% were aged 18 to 24 years. Almost one-third (30.2%) reported a previous food poisoning experience, with an incidence of 71.7 cases per 1000 person years. The most common perceived source of FP was restaurants foods (80.3%). The overall knowledge score of the participants regarding food poisoning was 3.42 ± 1.57 out of 7. The mean food safety practice score was 3.70 ± 1.42 out of 9. Multivariable regression analysis showed individuals aged 35 years or older (β = 0.205, P < .001), those who were married (β = 0.204, P = .003), participants with previous (FP) experience (β = 0.089, P = .009), and those who relied on information from the Ministry of Health or medical publications regarding FP (P < .001) exhibited significantly higher practice scores than other groups. The least adherence to safe practices were noted among the following: routine use of thermometer during cooking (2.7%), avoidance of washing raw chicken (13.7%) and washing hands after using cellphone during cooking (26.1%). The FP knowledge score did not correlate significantly with practice score (P = .065). This study highlights the significant knowledge gaps and inadequate food safety practices among the public in Saudi Arabia. Although certain groups, including adults (>35 years), married individuals, and those with previous food poisoning experience, showed greater adherence to safe food handling practices, adherence to specific preventive measures remained generally low. These findings highlight the need for targeted educational initiatives and interventions to improve food safety awareness and practices across diverse demographic groups in Saudi Arabia. The integration of generative AI tools, such as ChatGPT, as a public resource for food poisoning information, presents a new opportunity, but it requires further research and development to ensure accuracy and reliability.

Preferences for Colorectal Cancer Screening Modalities Among the General Population in Saudi Arabia

BACKGROUND

Colorectal cancer (CRC) could be a leading explanation for cancer-related death. Numerous studies have shown the benefit of early screening for colorectal cancer in reducing mortality. Screening for colorectal cancer is a rational and cost-effective strategy for reducing the incidence of colorectal cancer and related mortality. Despite endorsement by academic and healthcare organizations, patient awareness and compliance with screening are low, partly due to patient-related barriers to screening.

AIM

This study aimed to explore the preferred screening method for colorectal cancer in Saudi Arabia in general.

METHODS

This is a cross-sectional study conducted among the Saudi adult population from September 2021 through February 2022. A self-developed questionnaire was distributed among the population using an online platform. Data were tabulated in Google Forms, and all statistical analyses were performed using SPSS version 26 (IBM Corp., Armonk, NY).

RESULTS

During this study, data from 10,781 participants were analyzed. Among them, the most preferred screening modality for colorectal cancer was the stool fecal immunochemical test (41.7%) and the most suitable (33.5%). The most commonly mentioned qualities that influenced choosing a particular screening test were "how the test was performed" (50.4%).

CONCLUSION

Because the stool fecal immunochemical test is the most preferred screening modality for colorectal cancer, this study could serve as a database to aid in the implementation of a colorectal cancer screening program that meets the preferences of the general population of Saudi Arabia.

The Effect of Leadership Behaviours on the Change Process in Healthcare Organisations in Saudi Arabia

OBJECTIVE: The purpose of this empirical study was to explore and determine the influence of leadership behaviors on the organisational change process in healthcare organisations in the Kingdom of Saudi Arabia.METHODS: Primary data were collected from a sample of 272 employees in hospitals in the Al-Qassim region. The study used a self-administered questionnaire to examine the role of leadership behaviors (task-, relations-, and change-oriented leadership behaviors) on the organisational change process in healthcare organisations. Cross-sectional data were analyzed using SPSS.RESULTS: Positive and significant relations were found between leadership behaviors and the organisational change process contributed 54% of the variation in the dependent variable (R2 = 0.54).CONCLUSIONS: The findings of this research are highly significant, as they can give managers and organisational leaders a more profound insight into the behaviors and practices required to improve healthcare organisations’ performance during implementation of the change process.