Multi-method computational evaluation of the inhibitors against leucine-rich repeat kinase 2 G2019S mutant for Parkinson's disease.

Leucine-rich repeat kinase 2 G2019S mutant (LRRK2 G2019S) is a potential target for Parkinson's disease therapy. In this work, the computational evaluation of the LRRK2 G2019S inhibitors was conducted via a combined approach which contains a preliminary screening of a large database of compounds via similarity and pharmacophore, a secondary selection via structure-based affinity prediction and molecular docking, and a rescoring treatment for the final selection. MD simulations and MM/GBSA calculations were performed to check the agreement between different prediction methods for these inhibitors. 331 experimental ligands were collected, and 170 were used to build the structure-activity relationship. Eight representative ligand structural models were employed in similarity searching and pharmacophore screening over 14 million compounds. The process for selecting proper molecular descriptors provides a successful sample which can be used as a general strategy in QSAR modelling. The rescoring used in this work presents an alternative useful treatment for ranking and selection.

The outcome of type 1 pelvic resection and reconstruction with pedicle screw-rod system without bone grafting in malignant pelvic tumour: A case series and short term review.

INTRODUCTION: There is no consensus regarding the reconstruction method for type 1 resections around the pelvis. Various methods are currently used, such as resection without reconstruction, bone graft (autologous, recycled, allograft) with simple fixation, and pedicle screw-rod fixation with or without bone grafting. We aim to study the outcome of pedicle screw-rod reconstruction without bone grafting in type 1 pelvic resections involving sacroiliac joint to show that pedicle screw-rod construct alone is stable and has low risk of failure. MATERIAL AND METHODS: This is a retrospective review of eight patients who underwent type 1 resection of malignant pelvic tumours and reconstruction with a pedicle screw-rod system between 2011 and 2018. All patients who underwent type 1 resection and reconstruction with pedicle screw without bone grafting were included into this study. We reported their clinical (complication and radiological outcome), oncological (local recurrence and metastasis), and functional outcome based on Musculoskeletal Tumour Society Score (MSTS) and The Toronto Extremity Salvage Score (TESS) at their last follow-up. RESULTS: Eight patients were recruited into the study. The mean follow-up period was 58.5 months (range: 40 - 121 months). There were three postoperative complications in three different patients: superficial infection, surgical hernia with ipsilateral femoral avascular necrosis (AVN), and femoral nerve injury. At the end of the study period, one patient passed away due to disease progression, one patient was alive with disease, and the rest were disease-free. Mean MSTS score during last follow-up was 77.1% (range: 66.7% - 93.3%), while mean TESS score was 75.6% range (63.3% - 80.2%). There were no cases of implant failure. CONCLUSION: Type 1 pelvic reconstruction with a pedicle screw-rod system is stable without a concurrent biological reconstruction, and it is feasible, with few complications, and an excellent functional outcome.

Epidemiological and clinical presentations of hospitalized COVID-19 patients in Libya: An initial report from Africa.

BACKGROUND: The first case of the novel coronavirus disease 2019 (COVID-19) in Libya was diagnosed in March 2020. We aimed to determine the epidemiological, clinical, and laboratory characteristics of COVID-19 in Libya. METHOD: In this retrospective descriptive study, we analyzed the demographics, initial clinical presentation, history, comorbidities, laboratory findings, complications, and outcomes of hospitalized patients with COVID-19 at several centers in the Western part of Libya between March 24, 2020, and December 3, 2020. RESULTS: The study included 811 (67.2%) men and 396 (32.8%) women. The median (interquartile range [IQR]) age was 56 (40-64). A total of 173 (14.3%) patients developed respiratory distress syndrome, while 70 (5.8%) developed circulatory shock and hypotension; 190 (15.7%) were admitted to the intensive care unit. Acute cardiac injury occurred in 27 (2.2%) patients, and 45 (3.7%) developed arrhythmia. Acute kidney injury occurred in 44 (3.6%) patients. Of the patients admitted during the study period, 149 (12.3%) died. The predominant comorbidities ordered in a descending manner were as follows; diabetes mellitus, presented 490 (40.6%), hypertension in 414 (34.3%), chronic kidney disease in 114 (9.4%), and lung diseases in 103 (8.5%). The total white blood cell, neutrophil; monocyte; D-dimer; creatinine kinase; creatine kinase-MB; creatinine; total bilirubin; alanine and aspartate aminotransferase; and hypersensitive troponin were increased among non-survivors, whereas lymphocyte and platelet counts were decreased among non-survivors. CONCLUSION: This is the first report of the clinical presentations and laboratory findings in patients hospitalized with COVID-19 in Libya. Libyan authorities must implement several restrictions to control the pandemic. However, incoming international travelers pose a challenge to the local authorities, especially with the recent discovery of new variants.

Telemedicine Awareness, Knowledge, Attitude, and Skills of Health Care Workers in a Low-Resource Country During the COVID-19 Pandemic: Cross-sectional Study.

BACKGROUND: Since the onset of the COVID-19 pandemic, several health care programs intended to provide telemedicine services have been introduced in Libya. Many physicians have used these services to provide care and advice to their patients remotely. OBJECTIVE: This study aimed to provide an overview of physicians' awareness, knowledge, attitude, and skill in using telehealth services in Libya. METHODS: In this cross-sectional study, we administered a web-based survey to health care workers in Libya in May 2020. The questionnaire collected information on physicians' general demographic characteristics, ability to use a computer, and telemedicine awareness, knowledge, attitude, and skills. RESULTS: Among 673 health care workers who responded to the survey, 377 (56%) and 248 (36.8%) reported high awareness and high computer skill scores, respectively, for telemedicine. Furthermore, 582 (86.5%) and 566 (82.6%) health care workers reported high knowledge and high attitude scores, respectively. We observed no significant differences in awareness, knowledge, attitude, and skill scores among physicians employed at public, private, or both types of hospitals. We observed significant differences in the mean awareness (P<.001), attitude (P=.001), and computer skill scores (P<.001) , where the score distribution of the groups based on the ability to use computers was not similar. Knowledge scores did not significantly differ among the three groups (P=.37). Respondents with professional computer skills had significantly higher awareness (χ23=14.5; P<.001) and attitude (χ23=13.5; P=.001) scores than those without professional computer skills. We observed significant differences in the mean computer skill scores of the groups (χ23=199.6; P<.001). CONCLUSIONS: The consequences of the COVID-19 pandemic are expected to persist for a long time. Hence, policy programs such as telemedicine services, which aim to address the obstacles to medical treatment owing to physical distancing measures, will likely continue for a long time. Therefore, there is a need to train and support health care workers and initiate government programs that provide adequate and supportive health care services to patients in transitional countries.

Utilization of Telehealth Services in Libya in Response to the COVID-19 Pandemic: Cross-sectional Analysis.

BACKGROUND: Health care systems in transitional countries have witnessed unprecedented challenges related to adequate and continuous health care provision during the COVID-19 pandemic. In many countries, including Libya, institutions and organizations have begun to implement telehealth technology for the first time. This serves to establish an alternative modality for direct physician-patient interviews to reduce the risk of COVID-19 transmission. OBJECTIVE: This study aimed to assess the usability of telehealth services in Libya and to provide an overview of the current COVID-19 scenario. METHODS: In this cross-sectional study, an anonymous web-based survey was administered to Libyan residents between April and May 2020. Participants were contacted through text messaging, emails, and social media. The survey items yielded information on the sociodemographic characteristics, availability and accessibility of health care services, effects of the COVID-19 pandemic on health care services, mental health status, and the feasibility and application of the telehealth system. RESULTS: We obtained 2512 valid responses, of which 1721 (68.5%) were from females. The participants were aged 28.2 (SD 7.6) years, of whom 2333 (92.9%) were aged <40 years, and 1463 (58.2%) were single. Regarding the health care services and their accessibility, 786 (31.1%) participants reported having a poor health status in general, and 492 (19.6%) reported having a confirmed diagnosis of at least one chronic disease. Furthermore, 498 (19.9%) participants reported varying degrees of difficulty in accessing health care centers, and 1558 (62.0%) could not access their medical records. Additionally, 1546 (61.6%) participants experienced problems in covering medical costs, and 1429 (56.9%) avoided seeking medical care owing to financial concerns. Regarding the feasibility of the telehealth system, approximately half of the participants reported that telehealth services were useful during the COVID-19 pandemic, and 1545 (61.5%) reported that the system was an effective means of communication and of obtaining health care services. Furthermore, 1435 (57.1%) participants felt comfortable using the telehealth system, and 1129 (44.9%) felt that they were able to express themselves effectively. Moreover, 1389 (55.3%) participants found the system easy to understand, and 1354 (53.9%) reported having excellent communication with physicians through the telehealth system. However, only 1018 (40.5%) participants reported that communication was better with the telehealth system than with traditional methods. CONCLUSIONS: Our study revealed high levels of usability and willingness to use the telemedicine system as an alternative modality to in-person consultations among the Libyan residents in this study. This system is advantageous because it helps overcome health care costs, increases access to prompt medical care and follow-up evaluation, and reduces the risk of COVID-19 transmission. However, internet connectivity and electricity issues could be a substantial barrier for many resource-limited communities, and further studies should address such obstacles.

Burnout Syndrome Among Hospital Healthcare Workers During the COVID-19 Pandemic and Civil War: A Cross-Sectional Study.

Objective: We aimed to determine the prevalence of burnout among hospital healthcare workers in Libya during the coronavirus disease (COVID-19) pandemic and civil war. Methods: A cross-sectional study was conducted from April 18 to May 2, 2020 among Libyan healthcare workers. Data on participant characteristics were collected with a specifically designed questionnaire. Burnout was assessed with the abbreviated Maslach Burnout Inventory (aMBI) comprising three subscales: emotional exhaustion (EE), depersonalization (DP), and personal accomplishment (PA), with each sub-scale score range from 0 to 18. For EE and DP, scores of 10 to 18 were regarded as "moderate to severe burnout." PA was scored inversely, where a score ≤ 10 indicated severe burnout. Results: The study yielded a sample size of 532 participants. Of these, 357 (67.1%) reported emotional exhaustion (EE Score ≥ 10), 252 (47.4%) reported depersonalization (DP score ≥ 10), and 121 (22.7%) reported a lower sense of personal accomplishment (PA score ≤ 10). Verbal abuse was experienced by 304 participants (57.1%) and physical abuse in 93 (17.5). Gender was associated with high emotional exhaustion and high depersonalization. Being 35 years or older was associated with high depersonalization. Professional specialty was significantly associated with high emotional exhaustion and depersonalization. Fear of COVID-19 infection was associated with high emotional exhaustion and high depersonalization. Conclusion: The rising prevalence of mental disorders and inadequate availability of health services facilities during the COVID-19 pandemic and civil war demonstrated the need for healthcare policies to address the well-being of healthcare workers to decrease the risk of loss, suicide, and medical negligence.

Impact of the COVID-19 pandemic on medical education: Medical students' knowledge, attitudes, and practices regarding electronic learning.

The Coronavirus Disease 2019 (COVID-19) pandemic has caused an unprecedented disruption in medical education and healthcare systems worldwide. The disease can cause life-threatening conditions and it presents challenges for medical education, as instructors must deliver lectures safely, while ensuring the integrity and continuity of the medical education process. It is therefore important to assess the usability of online learning methods, and to determine their feasibility and adequacy for medical students. We aimed to provide an overview of the situation experienced by medical students during the COVID-19 pandemic, and to determine the knowledge, attitudes, and practices of medical students regarding electronic medical education. A cross-sectional survey was conducted with medical students from more than 13 medical schools in Libya. A paper-based and online survey was conducted using email and social media. The survey requested demographic and socioeconomic information, as well as information related to medical online learning and electronic devices; medical education status during the COVID-19 pandemic; mental health assessments; and e-learning knowledge, attitudes, and practices. A total of 3,348 valid questionnaires were retrieved. Most respondents (64.7%) disagreed that e-learning could be implemented easily in Libya. While 54.1% of the respondents agreed that interactive discussion is achievable by means of e-learning. However, only 21.1% agreed that e-learning could be used for clinical aspects, as compared with 54.8% who disagreed with this statement and 24% who were neutral. Only 27.7% of the respondents had participated in online medical educational programs during the COVID-19 pandemic, while 65% reported using the internet for participating in study groups and discussions. There is no vaccine for COVID-19 yet. As such, the pandemic will undeniably continue to disrupt medical education and training. As we face the prospect of a second wave of virus transmission, we must take certain measures and make changes to minimize the effects of the COVID-19 outbreak on medical education and on the progression of training. The time for change is now, and there should be support and enthusiasm for providing valid solutions to reduce this disruption, such as online training and virtual clinical experience. These measures could then be followed by hands-on experience that is provided in a safe environment.

Informed self-assessment versus preceptor evaluation: a comparative study of pediatric procedural skills acquisition of fifth year medical students.

BACKGROUND: Simulation training is widely used in medical education as students rarely perform clinical procedures, and confidence can influence practitioners' ability to perform procedures. Thus, this study assessed students' perceptions and experiences of a pediatric skills program and compared their informed self-assessment with their preceptor-evaluated performance competency for several pediatric clinical procedures. METHODS: A total of 65 final-year medical students attended a weeklong pediatric skills training course by the University of Tripoli that used a manikin and various clinical scenarios to simulate real-life cases. Participants completed questionnaires self-assessing their performance skills, while examiners evaluated each students' competency on five procedural skills (lumbar puncture, nasogastric tube insertion, umbilical vein catheterization, intraosseous access, and suprapubic aspiration) using an objective structured clinical examination (OSCE) model. Differences between agreement levels in question responses were evaluated through a nonparametric chi-square test for a goodness of test fit, and the relationship between confidence levels and the OSCE scores for each procedure was assessed using Spearman's rank-order correlation. RESULTS: All participants completed the informed self-assessment questionnaire and OSCE stations. The frequency differences in agreement levels in students' questionnaire responses were statistically significant. No significant differences were found between students' self-assessment and preceptors' evaluation scores. For each procedure's passing score rate, umbilical vein catheterization had the highest passing rate (78.5%) and nasogastric tube placement the lowest (56.9%). The mean performance scores were above passing for all procedures. The Wilcoxon signed-rank test revealed no significant differences between participants' self-assessment and their preceptor-evaluated competency; students correctly perceived and assessed their ability to perform each procedure. CONCLUSIONS: High competence in several life-saving procedures was demonstrated among final-year medical students. The need for consistent and timely feedback, methods to increase medical students' confidence, and further development and improvement of competency-based assessments are also highlighted.

Psychological status of healthcare workers during the civil war and COVID-19 pandemic: A cross-sectional study.

OBJECTIVE: Healthcare workers, particularly those working in departments that provide care for patients with coronavirus disease 2019 (COVID-19), are at a higher risk of this contagious disease than those who work in other departments. The aim of this study was to assess the psychological status of healthcare workers during the COVID-19 outbreak, which has compounded Libya's existing civil war-related problems. METHODS: A multi-center cross-sectional survey on depressive symptoms, anxiety symptoms, and abuse was conducted. The Hospital Anxiety and Depression Scale (HADS) was used to measure the prevalence of anxiety and depressive symptoms among healthcare workers. RESULTS: The data of 745 eligible healthcare workers from 15 hospitals were analyzed. Depressive and anxiety symptoms were compared to the basic characteristics of the participants to determine the association. A total of 420 (56.3%) participants had depressive symptoms, while 348 (46.7%) had anxiety symptoms. Age, residency status, department, stigmatization, and living in a conflict zone were significantly associated with depressive symptoms. Age, department, years of experience, working hours per week, internal displacement, stigmatization, living in a conflict zone, and verbal abuse were significantly associated with anxiety symptoms. CONCLUSION: Our study presents important findings regarding depressive, anxiety symptoms, and abuse among physicians providing care during the COVID-19 outbreak and civil war in Libya. It also demonstrates several factors that can be associated with depressive and anxiety symptoms in this population.

Assessment of Healthcare Workers' Levels of Preparedness and Awareness Regarding COVID-19 Infection in Low-Resource Settings.

COVID-19, caused by the SARS-CoV-2 virus, is spreading rapidly worldwide, with devastating consequences for patients, healthcare workers, health systems, and economies. As it reaches low- and middle-income countries, the pandemic puts healthcare workers at high risk and challenges the abilities of healthcare systems to respond to the crisis. This study measured levels of knowledge and preparedness regarding COVID-19 among physicians and nurses. A cross-sectional survey was conducted among healthcare workers in Libya between February 26 and March 10, 2020. We obtained 1,572 valid responses of a possible 2,000 (78.6%) participants from 21 hospitals, of which 65.1% were from physicians and 34.9% from nurses. The majority of participants (70%) used social media as a source of information. A total of 47.3% of doctors and 54.7% of nurses received adequate training on how to effectively use personal protective equipment. Low confidence in managing suspected COVID-19 patients was reported by 83.8% of participants. Furthermore, 43.2% of healthcare workers were aware of proper hand hygiene techniques. Less than 7% of participants received training on how to manage COVID-19 cases, whereas 20.6% of doctors and 26.3% of nurses felt that they were personally prepared for the outbreak. Awareness and preparedness for the pandemic were low among frontline workers during the study. Therefore, an effective educational training program should be implemented to ensure maintenance of appropriate practices during the COVID-19 pandemic.

The Mental Well-Being of Frontline Physicians Working in Civil Wars Under Coronavirus Disease 2019 Pandemic Conditions.

Background and Objective: Emergency medical physicians are regarded as essential frontline staff in combating the coronavirus disease 2019 (COVID-19) pandemic. These health-care workers are faced with significant stressors in addition to the usual stress felt in their regular work. Therefore, this study aimed to examine the prevalence of anxiety, depression, and burnout among emergency physicians on the frontline of the COVID-19 pandemic. Method: Using a cross-sectional study methodology, we surveyed physicians active on April 2020 to study depression and anxiety [using Hospital Anxiety and Depression Scale (HADS)] and burnout [using the Abbreviated Maslach Burnout Inventory (aMBI) scale]. Results: A total of 154 emergency physicians completed the survey. We found that about 65.6% of patients were experiencing anxiety (based on a HADS score ≥ 11), and 73.4% were displaying depressive symptoms. For burnout, three subscales indicated that 67.5% endured emotional exhaustion, and 48.1% experienced depersonalization (defined as a score of ≥10 on aMBI). A total of 21.4% of respondents perceived a sense of personal underachievement, defined as a score of <10 via aMBI. Conclusion: Physicians' psychological status is crucial and plays a major role in their well-being, affecting their work satisfaction. Therefore, implementing strategies aimed at decreasing the impact of stressful events is crucial to alleviate the distress experienced by physicians on the frontline of the COVID-19 pandemic.

Complete mitochondrial genomes provide current refined phylogenomic hypotheses for relationships among ten Hirundo species.

Hirundo is the most species-rich genus of the passerine swallow family (Hirundinidae) and has a cosmopolitan distribution. Here we report the complete, annotated mitochondrial genomes for 25 individuals from 10 of the 14 extant Hirundo species; these include representatives from four subspecies of the barn swallow, H. rustica. Mitogenomes were conserved in size, ranging from 18,500 to 18,700 base pairs. They all contained 13 protein-coding regions, 22 tRNAs, a control region, and large and small ribosomal subunits. Phylogenetic analysis resolved most of the relationships between the studied species and subspecies which were largely consistent with previously published trees. Several new relationships were observed within the phylogeny that could have only been discovered with the increased amount of genetic material. This study represents the largest Hirundo mitochondrial phylogeny to date, and could serve as a vital tool for other studies focusing on the evolution of the Hirundo genus.

Effect of Social Deprivation on the Stage and Mode of Presentation of Colorectal Cancer.

PURPOSE: Based in a hospital serving one of the most deprived areas in the United Kingdom (UK), we aimed to investigate, using the Indices of Deprivation 2010, the hypothesis that deprivation affects the stage and mode of presentation of colorectal cancer. METHODS: All newly diagnosed patients with colorectal cancer presenting to a District General Hospital in the UK between January 2010 and December 2014 were included. Data were collected from the Somerset National Cancer Database. The effect of social deprivation, measured using the Index of Multiple Deprivation Score, on the stage and mode of presentation was evaluated utilizing Microsoft Excel and IBM SPSS ver. 22.0. RESULTS: A total of 701 patients (54.5% male; mean age, 76 years) were included; 534 (76.2%) underwent a surgical procedure, and 497 (70.9%) underwent a colorectal resection. Of the patients undergoing a colorectal resection, 86 (17.3%) had an emergency surgical resection. Social deprivation was associated with Duke staging (P = 0.09). The 90-day mortality in patients undergoing emergency surgery was 12.8% compared to 6.8% in patients undergoing elective surgery (P = 0.06). No association was found between deprivation and emergency presentation (P = 0.97). A logistic regression analysis showed no increase in the probability of metastasis amongst deprived patients. CONCLUSION: This study suggests an association between deprivation and the stage of presentation of colorectal cancer. Patients undergoing emergency surgery tend to have a higher 90-day mortality rate, although this was not related to deprivation. This study highlights the need to develop an individual measure to assess social deprivation.

Causes of Low Vision in Sudan: a Study among the Attendees of Blind Centres in Khartoum

Aims: This study primarily aimed to provide demographic information about the low vision in the blind center at Khartoum state. The objectives were to indicate the main causes of low vision and to show the effect of these causes on the visual functions and mobility among a sample group. Methods: Clinical investigations were performed for visually impaired sample (171 subjects) from Sudan National Association of the Blind and Elnur Institute. Functional tests included; visual acuity (log MAR); contrast sensitivity (Pelli-Robson); colour vision (colour vision test made easy); confrontation and Amsler tests; structural inspection of anterior eye and interior eye; refraction; assessment of low vision devices; and observation of mobility. Results: The results revealed that 39.7of subjects in blind centers had low vision which can be improved with proper low vision aids. Significant deficiencies were found for all visual functions. The trend of causes is similar to that found in most developing countries. Statistically all causes had similar effect on visual functions. Mobility had provided good indictor differentiating functional vision from a non-useful residual vision in the blinds. Conclusions: There is a great need for the ophthalmologists and optometrists to be aware about the causes; functional effects of low vision in the population; and the possibility of improving vision with the help of low vision devices to a satisfactory level