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Rasheed Ibdah,1,* Omar Obeidat,1,* Yousef Khader,2 Jowan Al-Nusair,1 Obada Abusurrah,1 Abedallah Obeidat,1 Ali Obeidat,1 Sukaina Rawashdeh,1 Nasr Alrabadi,3 Abdelrahman F Obiedat,4 Naseem N Alnadi,4 Ayman Hammoudeh4 1Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 2Department of Community Medicine, Public Health and Family Medicine, Faculty of Medicine, Jordan University of Science & Technology, Irbid, 22110, Jordan; 3Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 4Department of Cardiology, Istishari Hospital, Amman, Jordan*These authors contributed equally to this workCorrespondence: Rasheed Ibdah, Division of Cardiology, Department of Internal Medicine, Jordan University for Science and Technology, Irbid, 22110, Jordan, Email rkibdah@just.edu.joBackground and Purpose: CHA2DS2-VASc score is one of the most widely used scoring systems to assess the risk of systemic embolization and stroke in patients suffering from atrial fibrillation (Afib); furthermore, it is important in guiding their treatment. This study aimed to evaluate the predictivity of this score in the Jordanian population, build a deeper understanding of patients’ demographic and risk factors, and assess the usefulness of anticoagulation as a preventive measure.Methods: A total of 2020 patients with Afib registered in the Jordanian Atrial Fibrillation (JoFib) registry were enrolled in this study. All patients were followed up for 1 year to assess their susceptibility to develop cerebrovascular accident (CVA) and systemic embolism (SE). The association between CHA2DS2-VASc score and risk of development of stroke or systemic embolization was analyzed based on bivariate and adjusted multivariate analyses. The ROC curve was used to assess the predictivity of the CHA2DS2-VASc score.Results: The mean age of the study population was 67.8 years; 45.8% were males, and 81.8% were on anticoagulants. And, 71.8% had a CHA2DS2-VASc score of ≥ 3. During the follow-up period of 1 year; 69 developed new CVA (mean age, 72.8 years), and 9 developed SE. A total of 276 patients died; 18 patients died (6.5% out of all deceased)% from CVA. A moderate predictive power of the CHA2DS2-VASc score was demonstrated through ROC curve analysis with C statistics of 0.689 CI (0.634 to 0.744) for predicting the development of SE or CVA at 1 year.Conclusion: CHA2DS2-VASc showed a moderate predictivity of stroke, SE, and all-cause mortality at 1 year. The study suggested disregarding gender differences in deciding to initiate anticoagulant therapy.Keywords: atrial fibrillation, Jordan, CHA2DS2-VASc, stroke, risk

Mahasen Al-Najar,1 Mohammed Al-Nusair,2 Nasr Alrabadi,3 Ibrahim Alawaisheh,4 Tuqa Alawaisheh,4 Mohamad Jarrah,5 Karem H Alzoubi,6,7 Sumaya Njem,3 Ayman Hamoudeh8 1Department of Radiology, Faculty of Medicine, The University of Jordan, Amman, Jordan; 2Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 3Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 4Faculty of Medicine, The University of Jordan, Amman, Jordan; 5Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 6Department of Pharmacy Practice and Pharmacotherapeutics, University of Sharjah, Sharjah, United Arab Emirates; 7Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan; 8Cardiology Department, Istishari Hospital, Amman, JordanCorrespondence: Mohamad Jarrah; Nasr Alrabadi, Correspondence: Tel +962795994247, Email jarrahmohammad16@gmail.com; nnalrabadi@just.edu.joAim: The risks of thromboembolism and major bleeding in atrial fibrillation (AF) patients were assessed according to the “Evaluated Heartvalves, Rheumatic or Artificial” (EHRA) classification. Additionally, the safety and efficacy of vitamin K antagonists (VKAs) and non-VKA oral anticoagulants (NOACs) were compared in AF patients with EHRA type 2 valvular heart disease (VHD) versus those with no VHD.Methods: AF patients enrolled in the “Jordan Atrial Fibrillation (JoFib)” study were followed up for thromboembolic events and major bleeding at 30, 180, and 365 days. Patients in the EHRA type 2 VHD and non-VHD groups were sub-grouped to compare different OACs.Results: 2020 AF patients were recruited. The thromboembolic risk was higher in EHRA type 2 VHD patients compared to non-VHD controls. Major bleeding also occurred at higher rates in EHRA type 2 patients. In addition, NOACs were more effective in preventing thromboembolic events than VKAs and non-anticoagulation in EHRA type 2 VHD patients. Furthermore, EHRA type 2 VHD patients taking rivaroxaban had significantly less thromboembolic risk than their non-anticoagulated counterparts. At the same time, apixaban and warfarin did not significantly lower the risk of thromboembolism compared to non-anticoagulation.Conclusion: AF patients with EHRA type 2 VHD are at significant risk of thromboembolism and major bleeding. Furthermore, NOACs were more effective than VKAs in preventing thromboembolic events in this group of patients without conferring an added risk of major bleeding. Moreover, rivaroxaban appears to be particularly efficacious.Keywords: thromboembolism, bleeding, atrial fibrillation, EHRA type 2 valvular heart disease, Jordan

Mohamad Jarrah,1 Nasr Alrabadi,2 Nashmi Al-Nusair,1 Karem H Alzoubi,3,4 Qasim Mhaidat,1 Mahasen Al-Najar,5 Ayman Hammoudeh6 1Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan; 2Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan; 3Department of Pharmacy Practice and Pharmacotherapeutics, University of Sharjah, Sharjah, United Arab Emirates; 4Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan; 5Department of Radiology, Faculty of Medicine, The University of Jordan, Amman, Jordan; 6Cardiology Department, Istishari Hospital, Amman, JordanCorrespondence: Mohamad Jarrah; Nasr Alrabadi, Tel +962795994247, Email jarrahmohammad16@gmail.com; nnalrabadi@just.edu.joBackground: Diabetes mellitus (DM) is considered a risk and prognostic factor for elderly patients with the acute coronary syndrome (ACS). However, less is known about the characteristics of this relationship among younger patients in the Middle Eastern population.Objective: To explore the Clinical outcomes of cardiovascular-related events in young DM patients (≤ 50 years of age) during hospitalization and up to one year of follow-up.Methods: We compared the clinical features, in-hospital and one-year outcomes in young ACS diabetic patients with young ACS non-diabetic patients in 12 tertiary care centers in Jordan.Results: A total of 3517 ACS patients were included initially, 1031 of whom (29.3%) were < 50-year-old. Of those, 385 (37.3%) had DM. Compared with young non-diabetic patients, young diabetic patients were more likely to have a worse clinical baseline profile, which includes hypertension (53.2% vs 26.0%, p < 0.001), dyslipidemia (32.5% vs 19.5%, p < 0.001), and multivessel coronary artery disease (40.9% vs 32.0%, p = 0.03). Furthermore, the diabetic group had more females than males (14.0% vs 5.9%, p < 0.001) and a higher mean body mass index (28.8+4.7 kg/m 2 vs 27.9+4.0 kg/m2, p < 0.001). There were no differences between the two groups in the mortality rates during index hospitalization (0.39% vs 0.28%, p = 0.63) or at one-year follow-up (1.6% vs 0.6%, p = 0.41). Also, no significant differences were observed in the rates of stent thrombosis (1.95% vs 1.97%, p = 0.78) or readmission for ACS or coronary revascularization (10.8% vs 7.6%, p = 0.14).Conclusion: Despite a worse baseline clinical profile, young diabetic ACS patients did not have higher risks for in-hospital or one-year adverse cardiovascular events compared with the young non-diabetic ACS patients.Keywords: diabetes mellitus, acute coronary syndrome, cardiovascular events, in-hospital complications, one-year follow-up

Nabil Al-Zoubi,1 Nasr Alrabadi,2 Khalid Kheirallah,3 Ahmad Alqudah4 1Department of General Surgery/Vascular Surgery, Jordan University of Science and Technology, Irbid, 22110, Jordan; 2Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan; 3Department of Public Health and Community Medicine, Jordan University of Science and Technology, Irbid, Jordan; 4Department of Laboratories/Jordan University of Science and Technology, Irbid, 22110, JordanCorrespondence: Nabil Al-ZoubiAssociate Professor of Vascular Surgery and Endovascular Therapy, Department of Surgery, Faculty of Medicine, Jordan University of Science and Technology, PO Box 3030, Irbid 22110, JordanTel + 962 79-5577-4637Email nazoubi@just.edu.joBackground: FV, MTHFR, II, and PAI-I are the most common genes associated with thrombophilia genetic variants, which vary among different populations and ethnic groups. Little is known about the prevalence and multiplicity of these variants in Jordan. The aim of this study was to estimate the prevalence and multiplicity of the FV G1691A, FV H1299R, MTHFR 1298A>C, MTHFR 677C>T, II 20210G>A, and PAI-I 675 4G/5G variants among healthy Jordanians.Methods: This cross-sectional study was conducted on randomly selected healthy Jordanian participants. Non-Jordanians and those with a history of arterial/venous thrombosis, atherosclerosis, or a history of recurrent abortions were excluded from the study. PCR was used to detect variants in DNA extracted from participants’ blood samples.Results: A total of 300 subjects were screened: 170 (56.7%) females with an average age of 27.78± 9.32 years and 130 (43.3%) males with an average age of 29.88± 8.55 years. Genetic variants (at least one) were found in 75% of the subjects (81.2% among females and 66.9% among men), while 64.7%, 52%, and 12% were found to have at least two, three, and four variants, respectively. Overall, 21%, 29%, 54.3%, 27.3%, 7.7%, and 66% of participants were found to have FV G1691A, FV H1299R, MTHFR 1298A>C, MTHFR 677C>T, II 20210G>A, and PAI-I 675 4G/5G gene variants, respectively.Conclusion: Three-quarters of our population had at least one of the thrombophilia genetic variants, and most had more than one variant. The most common variants detected were associated with MTHFR, followed by PAI-I, FV, and then II. We observed that females had higher prevalence estimates than males. However, multiplicity among males was significantly higher than females. Our findings indicated noticeable differences in prevalence estimates compared with other populations.Keywords: thrombophilia, gene mutations, factor V Leiden, FV, MTHFR, factorII, PAI-I

Majed M Masadeh,1 Karem H Alzoubi,2 Bashar M Al-Taani,1 Majd M Masadeh,1 Zainah O Aburashed,1,2 Nasr Alrabadi3 1Department of Pharmaceutical Technology, Jordan University of Science and Technology, Irbid 22110, Jordan; 2Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid 22110, Jordan; 3Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, JordanCorrespondence: Majed M MasadehDepartment of Pharmaceutical Technology, Jordan University of Science and Technology, Irbid 22110, JordanEmail mmmasadeh@just.edu.joBackground: Ciprofloxacin is an antimicrobial that is commonly used to treat several types of infections. It exerts its antimicrobial activity through interfering with bacterial DNA replication and transcription, leading to increase oxidative stress and eventually bacterial death. Vitamin D, on the other hand, has been found to have DNA protective and antioxidant effects. In the current study, the possible interactive effect of vitamin D on ciprofloxacin-induced cytotoxicity was investigated in various standard bacterial strains.Methods: The bacterial strains that were used include Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Staphylococcus epidermidis, Acinetobacter baumannii, Proteus mirabilis, and Klebsiella pneumoniae. The antibacterial effect of ciprofloxacin with and without vitamin D treatment of the bacteria was assessed using disc diffusion method and by measuring the minimum inhibitory concentration (MIC) and zones of inhibition of bacterial growth. Moreover, reactive oxygen species (ROS) generation after pretreatment of E. Coli cells with ciprofloxacin and/or vitamin D was measured as a function of as a function of hydrogen peroxide generation.Results: Ciprofloxacin demonstrated a potent antibacterial effect against the tested strains of bacteria. Moreover, pretreatment with vitamin D resulted in protecting the bacteria from the cytotoxicity of ciprofloxacin, this was indicated by the significantly smaller zones of inhibition and higher MIC values compared to ciprofloxacin alone as well as reduced ciprofloxacin-induced ROS generation after treatment with vitamin D.Conclusion: Results revealed the possible reduction in the activity of ciprofloxacin when used in combination with vitamin D. This could be explained by the ability of vitamin D to reduce oxidative stress in the bacterial cells.Keywords: fluoroquinolones, vitamins, MIC, zones of inhibition, antimicrobial susceptibility, oxidative stress

Nasr Alrabadi,1 Hanin Makhlouf,2 Omar F Khabour,2 Karem H Alzoubi3 1Department of Pharmacology, Faculty Of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 2Department of Medical Laboratory Sciences, Faculty of Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan; 3Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, JordanCorrespondence: Nasr AlrabadiDepartment Of Pharmacology, Faculty Of Medicine, Jordan University Of Science And Technology, Irbid 22110, JordanTel +962795994247Email nnalrabadi@just.edu.joIntroduction: The informed consent process is an integral step in biomedical research. However, the emergence of biobanks and the need for open consent (also called “broad” or “blanket” consent) create challenges to this process.Aims and methodology: A survey was used to examine Jordanians’ perspectives on open consent and reuse of stored samples in future research.Results: The majority of participants had positive perceptions of informed consent and its importance. In addition, they appreciated the challenges that are associated with multiple uses of their biospecimens. About 55% agreed to provide open consent for reuse of their donated biospecimens. Participants (75–80%) also agreed that issues such as the possibility of sharing samples with international research centers, storage duration, and use of biospecimens after their death should be clarified as part of open consent. The inconvenience of the re-contact process, trust in the research team, and the importance of biobanks were all associated with participants’ willingness to provide open consent (P

Hanin Makhlouf,1 Nasr Alrabadi,2 Omar F Khabour,1 Karem H Alzoubi,3 Wael Al-Delaimy4 1Department of Medical Laboratory Sciences, Jordan University of Science and Technology, Irbid, Jordan; 2Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 3Department of Clinical Pharmacy, Jordan University of Science and Technology, Irbid, Jordan; 4Division of Global Health, Department of Family and Preventive Medicine, University of California at San Diego, San Diego, CA, USA Background: Biobanks (biorepositories) were established to compile collected bio-specimens for future research and usage. The collection/storage of bio-specimens triggers several social, legal, and ethical implications where public attitudes can represent the core measurement/parameter in defining the most acceptable practices and ethical approaches when dealing with biobanks. Aim: The aim of this study was to explore and understand population’s perspectives, expectations, and concerns toward biobanks in Jordan. Methods: A cross-sectional survey that included closed-ended questions was distributed among Jordanians. A total of 500 participants who are representative of the Jordanian population were included in this study. Results: There was overwhelming support (>85%) for the establishment of biobanks in Jordan, and most of the participants agreed on the importance of biobanks and samples’ donation for promoting medical research. Enthusiasm in biobanking participation was associated with the sociodemographic characteristics of participants including age, educational level, and previous knowledge of biobanks. Moreover, considering sample donation as a religiously good deed appeared to have the strongest positive correlation with willingness to donate bio-specimens for future research. Also, participants’ trust in medical and research services, especially the protection of their privacy and confidentiality, was the most critical concern when they decided to participate in biobanks. Conclusion: Population’s attitude toward biobanks in Jordan was positive and promising, and can encourage the future establishment of different biobanks. It is also necessary to take into consideration certain sociodemographic characteristics when discussing specific information with potential biobanks’ donors. Keywords: biorepositories, sample storage, sample donation, sample reuse, ethics

Mohamad I Jarrah,1 Nasr Alrabadi,2 Karem H Alzoubi3 1Department of Internal Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 2Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 3Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan Background: The safety and efficacy of drug-eluting coronary stenting have been established for various degrees of severity of coronary artery disease. The DESyne is a contemporary cobalt–chromium thin-strut stent which has been studied in low-risk patients so far. Aim: The aim of this study was to evaluate the safety, efficacy and performance of the DESyne stent in patients with an indication for coronary stent implantation at the King Abdullah University Hospital (KAUH), Jordan. Patients and methods: Hospital records for all patients implanted with DESyne stent were retrospectively reviewed. Specific clinical events were recorded for all cases, and their incidence rates were estimated by the Kaplan–Meier method. A total of 715 patients (79.3% males and 58.3% with diabetes) with a mean age of 57.8±10.3 years were enrolled in this study. An acute coronary syndrome was the most frequent indication for stenting in 86.3% of the patients (unstable angina 72.0%, myocardial infarction [MI] 14.3%). A total of 849 lesions (1.2 lesions/patient) were treated with the DESyne stent. Results: After 1 year of follow-up, the death rates from cardiac or noncardiac causes were 0.6% and 1.1%, respectively. MI was observed in 0.9% of the cases, and an ischemia-driven revascularization was performed in 0.8% of them. The definite/probable stent thrombosis rate was 1.1%. Conclusion: Favorable clinical event rates including cardiac death, MI and stent thrombosis were observed for the DESyne stent in ischemic heart patients especially those with high prevalence of diabetes mellitus and acute coronary syndrome. Keywords: coronary stent system, DESyne stent, ischemic heart disease

Mohamad I Jarrah,1 Nizar M Mhaidat,2 Karem H Alzoubi,2 Nasr Alrabadi,3 Enas Alsatari,2 Yousef Khader,4 Moath F Bataineh5 1Department of Internal Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 2Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan; 3Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 4Department of Public Health and Community Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 5Department of Sport Rehabilitation, Faculty of Physical Education and Sport Sciences, Hashemite University, Zarqa, Jordan Background: Decreased levels of vitamin D were associated with increased risk of multiple diseases, including cardiovascular diseases. However, there seem to be some discrepancies among the results obtained from different studies. The aim of the present study was to explore the importance of having sufficient serum levels of vitamin D in reducing the incidence and the progression of coronary artery stenosis and ischemic heart disease (IHD). Methods: Serum levels of vitamin D were measured using radioimmunoassay in 186 Jordanian patients who underwent investigative coronary catheterization. Of these patients, 133 were suffering from coronary artery stenosis. The association between vitamin D levels, coronary stenosis and many risk factors was determined using SPSS software. Results and conclusions: Interestingly, the current results did not show an association between vitamin D abnormalities and the incidence or the reoccurrence of coronary artery stenosis. Moreover, significant differences were detected in the prevalence of vitamin D abnormalities based on the patient’s gender, and there was a significant association between vitamin D abnormalities and both body mass index and dyslipidemia. However, current results did not show any significant association with other risk factors for IHD. For instance, no association was found with smoking, hypertension, diabetes mellitus, stable and unstable angina or with acute recent myocardial infarction. Keywords: vitamin D, ischemic heart disease, IHD, coronary artery stenosis, cardiovascular system

Rasheed K Ibdah,1 Laith N AL-Eitan,2 Nasr N Alrabadi,3 Ayah Y Almasri,2 Adan H Alnaamneh,2 Rame H Khasawneh,4 Mansour A Alghamdi5,6 1Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 2Department of Biotechnology and Genetic Engineering, Jordan University of Science and Technology, Irbid, Jordan; 3Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan; 4Department of Hematopathology, King Hussein Medical Center (KHMC), Jordan Royal Medical Services (RMS), Amman, Jordan; 5Department of Anatomy, College of Medicine, King Khalid University, Abha, Saudi Arabia; 6Genomics and Personalized Medicine Unit,College of Medicine, King Khalid University, Abha, Saudi ArabiaCorrespondence: Laith N AL-EitanDepartment of Biotechnology and Genetic Engineering, Jordan University of Science and Technology. P.O.Box 3030, Irbid 22110, JordanTel +962-2-7201000 Ext. 23464Fax +962-2-7201071Email lneitan@just.eduBackground: The main objective of this study is sought to determine the impacts of PCSK9, WDR12, CDKN2A, and CXCL12 polymorphisms on warfarin sensitivity and responsiveness in Jordanian cardiovascular patients during the initiation and stabilization phases of therapy.Methods: This study took place at the anticoagulation clinic at Queen Alia Heart Institute (QAHI) in Jordan. DNA samples were collected from 212 cardiovascular patients and 213 healthy controls. Genomic SNPs genotyping was conducted using the MassARRAY System at the Australian Genome Research Facility.Results: This study assessed 10 polymorphisms (rs11206510 within the PCSK9 gene, rs6725887 and rs7582720 within the WDR12 gene, rs4977574, rs10757278, and rs1333049 within the CDKN2A gene, rs2862116, rs7906426, rs1746048, and rs268322 within the CXCL12 gene) in 212 Jordanian cardiovascular patients. Carriers of CDKN2A rs1333049, rs10757278, and PCSK9 rs11206510 polymorphisms had an increased risk of resistance during the initiation phase of warfarin therapy compared to those who do not carry it, or those who are carrying one polymorphism only (P < 0.05), while carriers of CXCL12 rs7906426 polymorphism had similar increased risk but during the stabilization phase of warfarin therapy (P < 0.05).Conclusion: Carriers of CXCL12 rs2862116 polymorphism had an increased risk to be warfarin extensive responders compared to those with no or only one polymorphism (P = 0.01). However, the presence of PCSK9 rs11206510 polymorphism affects the warfarin maintenance doses (P ˃ 0.0001).Keywords: warfarin, cardiovascular disease, PCSK9, WDR12, CDKN2A, CXCL1

Background: The highly contagious novel COVID-19 virus has demonstrated a great challenge for healthcare workers (HCWs) worldwide. One of these challenges is the availability of vaccines in some countries or societies, especially in the early stages of the pandemic., Objectives: This study aims to determine the level of natural immunity against COVID-19 infection among HCWs exposed to COVID-19 at the early stages of the pandemic and build a model to determine the groups that can benefit more from the scarce vaccination resources., Methods: This study took place between January and March 2021, after the first waves of the COVID-19 pandemic, before spreading the variants of concern, such as the UK variant (Alpha B.1.1.7), and before starting the vaccine campaigns. This cross-sectional study collected serum samples from 251 vulnerable HCWs. The samples were tested for IgG antibodies against COVID-19 using commercial kits. The demographics and clinical characteristics of the participants were recorded using face-to-face interviews., Results: COVID-19 IgG antibodies were detected in more than 40% of HCWs before vaccination. Those HCWs should have less priority than those without COVID-19 IgG. The seroprevalence of COVID-19 was higher in male HCWs and among nurses. There was no association between the participants' immunity and smoking status or different blood groups. Most HCWs reported being infected with the virus during the first wave, mainly at the end of 2020. A limited number of HCWs reported infections between January 2021 and March 2021. All HCWs eventually received the COVID-19 vaccine, ignoring being previously infected., Conclusion: The reported results emphasize the value of using immunity tests to prioritize the groups that may benefit the most from the limited vaccines, especially in developing countries with scarce resources where those with COVID-19 IgG antibodies should have less priority for the COVID-19 vaccine. The present results indicate that up to 40% of the delivered vaccines to HCWs who had COVID-19 antibodies could be prioritized more wisely in future pandemics., Competing Interests: NO authors have competing interests., (Copyright: © 2024 Alrabadi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Objectives: To investigate residual risk of thromboembolic events despite anticoagulation in patients with atrial fibrillation form the Middle East., Materials and Methods: Using data from the JoFib registry, we described the characteristics of patients treated with anticoagulants (n = 1654) and calculated the incidence rate for thromboembolic events. We constructed multivariable Cox proportional hazard models and calculated the population-attributable fraction to determine clinical factors predictive of residual thromboembolic events., Results: During the one-year follow-up, 57 thromboembolic events occurred (incidence rate 4.1 per 100 person-years). In multivariable time-to-event analysis, prior thromboembolic events (aHR 3.8, 95 %CI 2.2-6.4, p < 0.001) and diabetes (aHR 2.3, 95 %CI 1.3-4.1, p = 0.004) were independently predictive of residual thromboembolism. Percentage of thromboembolic risk attributable to prior thromboembolic events was 30.9 % (95 %CI 13.9-44.6, p = 0.001) and was 37.1 % (95 %CI 8.8-56.6, p = 0.015) for diabetes. Furthermore, the effect of diabetes on thromboembolic events depends on the type of anticoagulant, with diabetes being significantly predictive of thromboembolic events in patients anticoagulated with warfarin (aHR 4.11, 95 %CI 1.81-9.37, p = 0.001), but not non-vitamin K antagonist oral anticoagulants (aHR 1.23, 95 %CI 0.51-2.97, p = 0.643) with a p = 0.045 for interaction. Prior thromboembolism was independently predictive of thromboembolic events in both anticoagulants (aHR 2.67, 95 %CI 1.28-5.58, p = 0.009; aHR 7.33, 95 %CI 3.05-17.65, p < 0.001; respectively; p = 0.084 for interaction)., Conclusions: Middle Eastern patients with atrial fibrillation remain at significant risk of thromboembolism and its recurrence despite anticoagulation, and especially in diabetic patients. Therefore, management should focus on controlling diabetes as well as other modifiable risk factors in addition to antithrombotic therapy., Competing Interests: Declaration of competing interest None., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Background: Pulmonary Hypertension (PH) leads to changes in pulmonary vascular architecture, hypertrophy of the right ventricle, and heart failure. Sildenafil is a drug that can modulate PH by inducing smooth muscle relaxation and vasodilation., Aims: To investigate the ability of sildenafil to alleviate the monocritaline (MCT)-induced PH in rats and to estimate the role and its effect on the atrial natriuretic peptide (ANP) levels., Methods: 28 adult male rats were divided randomly into four groups: Group A (control group; n=7). Group B (MCT-treated group; n=7) was given a single dose of MCT 60 mg/kg subcutaneously. Group C (The reversal group; n=7) received a single dose of MCT 60 mg/kg subcutaneously for three weeks and then sildenafil at 50 mg/kg/day, given daily for another three weeks. Group D (The prevention group; n=7) simultaneously received a single dose of MCT 60 mg/kg subcutaneously and sildenafil daily at 50 mg/kg for three weeks., Results: The animals in the prevention group showed a significant decrease in ANP levels compared to the reversal and MCT-treated groups. This decrease was associated with a significant reduction in the Fulton index ratio in the prevention group compared to the reversal group. The nitric oxide levels were also significantly higher in the reversal group than in the control group., Conclusion: Preventive sildenafil treatment was associated with a significant decrease in ANP levels and reduced MCT-induced cardiac hypertrophy in rats., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Objective: Studies have revealed that sex can predict differences in multiple aspects of atrial fibrillation (AF). These differences are underreported in the Middle East. This study aims to describe sex-specific differences in risk factors, symptomatology, management, and outcomes in Middle Eastern patients with AF., Methods: The JoFib (Jordan-Atrial-Fibrillation) study is an observational, prospective, multicenter, nationwide registry in AF. Comparisons were made between female and male patients using Pearson chi-square and Mann-Whitney U tests. Multivariable regression models were constructed to investigate whether the female sex was predictive of any AF-related outcomes (all-cause death, cardiovascular death, ischemic stroke or systemic embolism [IS/SE], major bleeding, and clinically relevant non-major bleeding)., Results: Of 2,020 patients with AF, 54% ( n  = 1091) were females. Females with AF were older (median age 71 vs. 69, p  <.001), but had less heart failure (20.9% vs. 27.2%, p  = .001) and coronary artery disease (7.5% vs. 14.7%, p  <.001). Females with AF were more symptomatic (74.7% vs. 66.5%, p  <.001) and frequently received anticoagulant therapy (84.4% vs. 78.9%, p  = .001). Rhythm control was pursued less frequently in females (23.4% vs. 27.3%, p  = .04). All studied outcomes occurred with similar frequencies in females and males, and sex was not significantly predictive of any outcome., Conclusion: Females with AF are more symptomatic, yet they are treated less with rhythm control. Despite higher risk, females have similar risk-adjusted all-cause cardiovascular death and stroke rates compared to males. Future studies should explore how treatments and interventions can influence quality-of-life and cardiovascular outcomes in females with AF.

Background: Psychosocial stress, a common feature in modern societies, impairs cognitive functions. It is suggested that stress hormones and elevated excitatory amino acids during stress are responsible for stress-induced cognitive deficits. Reduced brain-derived neurotrophic factor (BDNF) levels, increased oxidative stress, and alteration of synaptic plasticity biomarkers are also possible contributors to the negative impact of stress on learning and memory. Sildenafil citrate is a selective phosphodiesterase type 5 (PDE5) inhibitor and the first oral therapy for the treatment of erectile dysfunction. It has been shown that sildenafil improves learning and memory and possesses antioxidant properties. We hypothesized that administering sildenafil to stressed rats prevents the cognitive deficit induced by chronic psychosocial stress., Methods: Psychosocial stress was generated using the intruder model. Sildenafil 3 mg/kg/day was administered intraperitoneally to animals. Behavioral studies were conducted to test spatial learning and memory using the radial arm water maze. Then, the hippocampal BDNF level and several antioxidant markers were assessed., Results: This study revealed that chronic psychosocial stress impaired short-term but not long-term memory. The administration of sildenafil prevented this short-term memory impairment. Chronic psychosocial stress markedly reduced the level of hippocampal BDNF (P˂0.05), and this reduction in BDNF was normalized by sildenafil treatment. In addition, neither chronic psychosocial stress nor sildenafil significantly altered the activity of measured oxidative parameters (P > 0.05)., Conclusion: Chronic psychosocial stress induces short-term memory impairment. The administration of sildenafil citrate prevented this impairment, possibly by normalizing the level of BDNF., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors.)

Purpose: Many atrial fibrillation (AF) patients use cardiovascular medications for indications other than AF. These medications can affect morbidity and mortality. We aim to investigate the characteristics of AF patients who use different medication classes and their clinical course., Methods: We collected data from the prospective, multicenter registry, JoFib study. We identified classes of non-AF medications (medications not used for rate control, rhythm control, or anticoagulation), described demographic and clinical characteristics, and investigated AF-related outcomes according to these medication classes., Results: From a total of 2020 patients, five classes of cardiovascular non-AF medications were identified, aspirin, P2Y12 inhibitors, ACE inhibitors/ARBs, statins, and diuretics. The most commonly used non-AF medications were diuretics and ACE inhibitors/ARBs (39.2%, and 39%, respectively). 51% of AF patients took more than one non-AF medication. Multivariable Cox regression analysis demonstrated that ACE inhibitor/ARB therapy independently reduced the risks of all-cause mortality and cardiovascular mortality (aHR 0.50, 95%CI 0.37-0.68; aHR 0.51, 95%CI 0.34-0.75, respectively) and that statin therapy reduced the risk of cardiovascular mortality (aHR 0.68, 95%CI 0.48-0.98) in AF patients. Multivariable logistic regression analysis demonstrated a protective effect of statin therapy against the secondary outcome, clinically relevant non-major bleeding (CRNMB) (adjusted OR 0.62 95%CI 0.42-0.94)., Conclusion: Our findings suggest a protective effect of ACE inhibitors/ARBs against all-cause and cardiovascular mortality, statins against cardiovascular mortality, and CRNMB in patients with AF. Accordingly, these medications should be encouraged in patients with AF when indicated. Additionally, future research should explore whether these medications should be offered to AF patients more routinely. The study was registered with Clinicaltrials.gov (unique identifier number: NCT03917992, Registration date:14/4/2019)., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Immune checkpoint inhibitors (ICIs) have revolutionized the treatment of different malignancies. However, their efficacy in advanced adrenocortical carcinoma (ACC) remains uncertain. Thus, we conducted a systematic review and meta-analysis to summarize the efficacy and tolerability of ICIs in patients with advanced ACC. We searched PubMed, Scopus, and CENTRAL for studies that used ICIs in ACC. Studies with more than five patients were included in the meta-analysis of the objective response rate (ORR), disease control rate (DCR), overall survival (OS), progression-free survival (PFS), and grade 3/4 adverse events. Twenty studies with 23 treatment arms and 250 patients were included. Single-agent anti-PD1 or anti-PD-L1 treatment was utilized in 13 treatment arms, whereas an anti-PD1 or anti-PD-L1 and anti-CTLA4 combination was used in 4 treatment arms. Other anti-PD1- or anti-PD-L1-based combinations were used in five treatment arms. The ORR was 14% (95% CI = 10-19%, I 2 = 0%), and the DCR was 43% (95% CI = 37-50%, I 2 = 13%). The combination anti-PD1- or anti-PD-L1-based treatment strategies did not correlate with higher responses compared with monotherapy. The median OS was 13.9 months (95% CI = 7.85-23.05), and the median PFS was 2.8 months (95% CI = 1.8-5.4). ICIs have a modest efficacy in advanced ACC but a good OS. Further studies are needed to investigate predictive biomarkers for ICI response and to compare ICI-based strategies with the current standard of care.

There is a high prevalence rate of peripheral artery disease worldwide, with estimated cases exceeding 200 million. Most patients are under-diagnosed and under-treated, and there is a lack of knowledge regarding the best therapeutic regimen and therapy duration, which leads to many cases of recurrence, complications, and amputations. This study aims to explore clinical recurrence, which was defined as the worsening of chronic peripheral artery disease requiring hospital admission, and its relationship with antiplatelet drug resistance among patients with lower limb ischemia. This cohort study includes both retrospective and prospective recruitment of patients with chronic lower limb ischemia. Platelet aggregation tests were offered to the patients. Between February 2018 and November 2020, 147 patients were recruited from King Abdullah University Hospital and followed up for at least 1 year. Platelet aggregation tests were done for 93 patients who agreed to participate in this part of the study. The prevalence of chronic lower limb ischemia was higher in young male patients who are current smokers with co-morbid diseases such as hypertension, diabetes mellitus, and/or dyslipidemia. There was a significant association only of clinical recurrence with younger age (P = .011) and with low platelets count in severe stages of the disease (P = .047). No significant association was found in terms of laboratory resistance. The clinical recurrence rates of chronic lower limb ischemia were higher in younger patients and among those with low platelet counts in the severe stages of the disease. Despite the laboratory responsiveness to anti-platelet therapy, we observed significant clinical resistance and increased recurrence rates., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.)

Background: Antibiotic resistance is one of the main concerns of public health, and the whole world is trying to overcome such a challenge by finding novel therapeutic modalities and approaches. This study has applied the sequence hybridization approach to the original sequence of two cathelicidin natural parent peptides (BMAP-28 and LL-37) to design a novel HLM peptide with broad antimicrobial activity., Methods: The physicochemical characteristics of the newly designed peptide were determined. As well, the new peptide's antimicrobial activity (Minimum Inhibitory Concentration (MIC), Minimum Bacterial Eradication Concentration (MBEC), and antibiofilm activity) was tested on two control ( Staphylococcus aureus ATCC 29213, Escherichia coli ATCC 25922) and two resistant (Methicillin-resistant Staphylococcus aureus (MRSA) ATCC BAA41, New Delhi metallo-beta- lactamase-1 Escherichia coli ATCC BAA-2452) bacterial strains. Furthermore, synergistic studies have been applied to HLM-hybridized peptides with five conventional antibiotics by checkerboard assays. Also, the toxicity of HLM-hybridized peptide was studied on Vero cell lines to obtain the IC 50 value. Besides the percentage of hemolysis action, the peptide was tested in freshly heparinized blood., Results: The MIC values for the HLM peptide were obtained as 20, 10, 20, and 20 μM, respectively. Also, the results showed no hemolysis action, with low to slightly moderate toxicity action against mammalian cells, with an IC 50 value of 10.06. The Biomatik corporate labs, where HLM was manufactured, determined the stability results of the product by Mass Spectrophotometry (MS) and High-performance Liquid Chromatography (HPLC) methods. The HLM-hybridized peptide exhibited a range of synergistic to additive antimicrobial activities upon combination with five commercially available different antibiotics. It has demonstrated the biofilm-killing effects in the same concentration required to eradicate the control strains., Conclusion: The results indicated that HLM-hybridized peptide displayed a broad-spectrum activity toward different bacterial strains in planktonic and biofilm forms. It showed synergistic or additive antimicrobial activity upon combining with commercially available different antibiotics., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Background: Atrial fibrillation (AF) is the most commonly encountered cardiac arrhythmia in clinical practice. Heart failure (HF) can occur concurrently with AF., Aim: We compared different demographic, clinical, and echocardiographic characteristics between patients with AF+HF and patients with AF only. Furthermore, we explored whether concurrent HF independently predicts several outcomes (all-cause mortality, cardiovascular mortality, ischemic stroke/systemic embolism (IS/SE), major bleeding, and clinically relevant non-major bleeding (CRNMB))., Materials and Methods: Comparisons between the AF+HF and the AF-only group were carried out. Multivariable Cox proportional hazard models were constructed for each outcome to assess whether HF was predictive of any of them while controlling for possible confounding factors., Results: A total of 2020 patients were included in this study: 481 had AF+HF; 1539 had AF only. AF+HF patients were older, more commonly males, and had a higher prevalence of diabetes mellitus, dyslipidemia, coronary artery disease, and chronic kidney disease (p≤0.05). Furthermore, AF+HF patients more commonly had pulmonary hypertension and low ejection fraction (p≤0.001). Finally, HF was independently predictive of all-cause mortality (adjusted HR 2.17, 95% CI (1.66-2.85) and cardiovascular mortality (adjusted HR 2.37, 95% CI (1.68-3.36)., Conclusion: Coexisting AF+HF was associated with a more labile and higher-risk population among Jordanian patients. Furthermore, coexisting HF independently predicted higher all-cause mortality and cardiovascular mortality. Efforts should be made to efficiently identify such cases early and treat them aggressively., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Working with 2019 coronavirus disease (COVID-19) patients is currently considered one of the main fears and challenges that face healthcare workers (HCWs), especially nurses. This challenge can jeopardize the quality of health care services for those patients and cause a serious mental burden to HCWs. To understand and estimate the risk of COVID-19 infection among HCWs who directly serve COVID-19 patients. Before the community spread of the disease, 270 nurses who worked with COVID-19 wards were followed for 11 weeks to report the COVID-19 cases. On the other hand, during the community spread of the disease, 981 registered nurses (300 worked in COVID-19 wards and 681 worked in non-COVID wards) were followed for up to 16 weeks to report the COVID-19 cases. Before the community spread of COVID-19, none of the nurses who worked with the COVID-19 patients got the infection. On the other hand, during the community spread of the COVID-19 infection, 30% of the 300 nurses who worked in the COVID-19 wards got the COVID-19 infection, while 64% of the 681 HCWs who worked in the non-COVID wards got the infection. The relative risk of getting COVID-19 infection among HCWs who worked in the COVID-19 wards was reduced to about half in comparison to other HCWs who worked in the non-COVID wards (RR = 0.469). HCWs should not fear working with COVID-19 patients. Considering appropriate personal protective measures and infection control standards, the risk of infection transmission from the community is higher than that of COVID-19 patients, if any., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc.)

Background. Frozen sections (FS) are common in neurosurgery to address varied clinical concerns. Artifacts in central nervous system (CNS) FS can be severe and affect or hinder interpretation. We performed a case-control study using a semiquantitative scale: the Histologic Preservation Score (HPS), and a quantitative scale: the Ice Crystal Vacuolization Score (ICVS), to compare the histologic quality yielded by snap- versus cryostat freezing techniques. Material and Methods. All specimens were sectioned in 2 halves, one half was used for FS and the other for permanent evaluation. HPS assigns a distortion score to the FS sample using the non-frozen half as the comparator: 1  =  minimal, 2  =  slight, 3  =  moderate, 4 & 5  =  severe. The ICVS is the average size in µm of the 5 largest vacuoles/0.05 mm 2 , evaluated on digitized slides. Results. 86 CNS-FS were collected: 22 snap- and 64 cryostat-FS. Significant differences in HPS: 2.28 versus 2.84 ( p <0.05 ) and ICVS 7.47 versus 14.56 ( p   <   0.001 ) were obtained for snap- versus cryostat-FS, respectively. HPS and ICVS showed a strong correlation: R 2  = 0.63, p   <   0.0001. Histologic distortion was worse for neuroglial than mesenchymal tissue by both methods; however, a significant difference was only observed in cryostat-FS: HPS: 3.23 versus 2.33, p   <   0.001 ; ICVS: 16.86 μm versus 10.26 μm, p   <   0.001 . Conclusion. Snap-FS yields better histologic quality than cryostat-FS for CNS-FS, and the difference is more pronounced in neuroglial samples. HPS and ICVS correlate strongly, indicating that the histologic quality is inversely proportional to water-crystallization. These results may apply to other areas of surgical pathology.

Tuberculosis (TB) is a life-threatening disease and a main cause of death worldwide. It mainly affects the lungs, and it is attributed to the infection with Mycobacterium tuberculosis (MTB). Current treatments consist of the oral administration of combinations of antibiotics including rifabutin, in high doses and for long periods of time. These therapeutic regimens are associated with many side effects and high rates of drug resistance. To overcome these problems, this study aims at developing a nanosystem for the improved delivery of antibiotics, with potential application in pulmonary delivery. Chitosan-based nanomaterials are widely used in biomedical applications, due to their biodegradability and biocompatibility, as well as their potential antimicrobial effects and lack of toxicity. In addition, this polymer is particularly attractive for mucosal delivery due to its bioadhesive properties. Therefore, the structure of the proposed nanocarrier consists of a chitosan shell and a lipid core with a combination of different oils and surfactants to allow optimal association of the hydrophobic drug rifabutin. These nanocapsules were characterized in terms of size, polydispersity index, surface charge, morphology, encapsulation efficiency and biological stability. The release kinetics of the drug-loaded nanostructures was evaluated in simulated lung media. Moreover, in vitro studies in different cell models (A549 and Raw 264.7 cells) demonstrated the safety of the nanocapsules as well as their efficient internalization. An antimicrobial susceptibility test was performed to evaluate the efficacy of the rifabutin-loaded nanocapsules against Mycobacterium phlei. This study indicated complete inhibition for antibiotic concentrations within the expected susceptibility range of Mycobacterium (≤ 0.25-16 mg/L)., Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest., (Copyright © 2023. Published by Elsevier B.V.)

Background: Refugees who have fled war zones are at a heightened risk of psychosocial problems that can impact their ability to function in day-to-day life and place a significant burden on the family structure. This study aimed to assess the psychosocial problems and needs and coping mechanisms of Adolescent Syrian refugees in Jordan., Methods: Between October and December 2018, we conducted a qualitative study using semi-structured interviews with a sample of key and individual informants. Our sample included 20 primary healthcare professionals, 20 schoolteachers, 20 Syrian parents, and 20 adolescents aged 12-17 years. All interviews were transcribed verbatim, and we utilized thematic analysis to group, categorize, and analyze the original Arabic language transcripts. To ensure thorough analysis, we adopted a bottom-up inductive approach that covered the six-phase iterative process proposed by Braun and Clarke., Results: The main psychosocial problems encountered by Syrian adolescents included stress, depression, loneliness, lack of a sense of security, isolation, aggressiveness, fear of war, and family disintegration. Almost all schoolteachers reported that they observed that Jordanian adolescents are more settled, self-confident, and financially stable relative to their Syrian peers. The Jordanian government and community were praised for their support, including education, recreational centers, health services, and awareness campaigns. Going to school, praying and reading the Holy Quran, listening to music, and talking to friends and engaging with them were reported as the main coping mechanisms. The majority of respondents said that more services are still needed for adolescents, including more places for entertainment, psychosocial support and psychological counseling, medical care, job creation, and providing health insurance., Conclusion: Syrian refugees are aware of the psychological aspects of their situation, but they are not always able to access clinic-based humanitarian assistance for mental health and psychosocial support. Stakeholders must interact with refugees to learn about their needs and develop services that are appropriate for their culture., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Al-Shatanawi, Khader, ALSalamat, Al Hadid, Jarboua, Amarneh, Alkouri, Alfaqih and Alrabadi.)

Aims: To describe the level of knowledge of undergraduate students in Jordan toward COVID-19 in children in respect of the clinical signs of the disease, modes of transmission, protection measures against the disease and satisfaction with governmental measures., Design: A cross-section was utilized in this study., Methods: An online survey questionnaire was utilized in this research study. All undergraduate students in Jordan were able to take part. The size of the sample was 799. Knowledge toward COVID-19 among children was used to assess the participants' knowledge about COVID-19., Results: The findings indicate that the students had a good understanding of the clinical signs, mode of transmission and protection measures and were satisfied with governmental measures. According to the students' responses, the resource they used the most was social media followed by news channels. Our study also found that medical specialty students had more knowledge toward COVID-19 than non-medical., (© 2023 The Authors. Nursing Open published by John Wiley & Sons Ltd.)

Although euthanasia has been practiced for thousands of years, a wide controversy still exists around it. This study aimed to assess the attitude of university students toward euthanasia and its associated factors. The study included an online self-administered survey. Survey questions consisted of demographic information, psychological condition, and attitude toward euthanasia. A total of 1,188 students participated in the study. Approximately only one-third of the respondents (34.1%) viewed euthanasia as a moral practice, and just one-quarter (25.3%) supported legalizing it. The main reason for not supporting euthanasia was religious considerations (72.2%), followed by moral considerations (46.5%). Factors that predicted a positive attitude toward euthanasia (p < .05) included undefined religion, being male, feeling lonely, or having suicidal thoughts. Conclusively, the negative attitude toward euthanasia is primarily driven by religious beliefs. Furthermore, gender and psychological status play critical roles in students' attitudes toward euthanasia.

Purpose: Extended resection for non-small cell lung cancer (NSCLC) with T4 left atrium involvement is controversial. We performed a systematic review and meta-analysis to evaluate the short- and long-term outcomes of this treatment strategy., Methods: We searched the PubMed database for studies on atrial resection in NSCLC patients. The primary investigated outcome was the effectiveness of the surgery represented by survival data and the secondary outcomes were postoperative morbidity, mortality, and recurrence., Results: Our search identified 18 eligible studies including a total of 483 patients. Eleven studies reported median overall survival and 17 studies reported overall survival rates. The estimated pooled 1, 3, 5-year overall survival rates were 69.1% (95% CI 61.7-76.0%), 21.5% (95% CI 12.3-32.3%), and 19.9% (95% CI 13.9-26.6%), respectively. The median overall survival was 24 months (95% CI 17.7-27 months). Most studies reported significant associations between better survival and N0/1 status, complete resection status, and neoadjuvant therapy., Conclusion: Extended lung resection, including the left atrium, for NSCLC is feasible with acceptable morbidity and mortality when complete resection is achieved. Lymph node N0/1 status coupled with the use of neoadjuvant therapies is associated with better outcomes., (© 2022. The Author(s) under exclusive licence to Springer Nature Singapore Pte Ltd.)

Vaccines are important to improve immunity against pathogens and diseases. The current COVID-19 disease is rapidly evolving and spreading among people; therefore, it is important to utilize a proper vaccination strategy against it. Currently, many approved vaccines are available and accessible; however, there is a reported hesitancy against taking them among the public and even the health care workers. Mainly, this is attributed to the fear of the possible side effects and complications. Moreover, inaccurate knowledge disseminated through the media/social media especially by those who lack the proper expertise, adds confusion and more fear that affects the vaccination decision. For such reasons, it is essential to find strategies to increase the acceptability of vaccines and enhance confidence in the vaccination process. This should be accompanied by sufficient efforts and proper clinical studies to confirm the value and the safety of the vaccines. Those strategies are important to avoid the further spread of the COVID-19 disease and abort the pandemic worldwide, especially when considering the likely approach towards a COVID-19 booster vaccination program, in which booster vaccines are re-taken along intervals to adequately contain the rapidly evolving nature of the virus. This review article highlights the factors influencing the acceptability of the COVID-19 vaccination and enrollment in clinical trials among the public and some specific populations. Furthermore, it summarizes the suggested strategies and recommendations to improve attitudes towards COVID-19 vaccination programs., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Background: Antibiotics have led to significant advancements in medicine. Unfortunately, they were faced with the emergence of pathogen resistance. According to the World Health Organization, antimicrobial resistance has been declared one of humanity's top ten global public health threats. The risk of those bacteria is not only from their being resistant to multi-antibiotics but also from their ability to form biofilms, which can be 1,000 times more resistant than planktonic bacteria., Method: This study used rational design to hybridize two antimicrobial peptides, aiming to enhance their efficacy and stability with reduced toxicity., Results: The MY8 novel peptide was designed from the parent peptides BMAP-27 and CAMP 211-225. Some amino acid modifications were introduced to the hybrid peptide to improve its physicochemical properties guided by several software. Its antimicrobial activity has been studied against gram-negative and gram-positive strains, which showed broad-spectrum activity with MIC values against planktonic bacteria ranging from 0.125 to 25 μM. In contrast, 25-200 μM were needed to eradicate biofilms. Moreover, the MY8 peptide showed synergism with four conventional antibiotics., It also showed reduced toxicity against mammalian cells and a slight hemolysis tendency towards erythrocytes., Conclusion: The design of the MY8 peptide was successful, resulting in a novel, potent, broad-spectrum antimicrobial peptide with reduced toxicity and possible synergism with conventional antibiotics., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Background: Antibiotic-resistant is considered one of the critical health challenges in the management of infectious diseases. Resistant bacterial strains to different antibacterial agents have been spread worldwide. Anti-microbial peptides (AMPs), also called host defense peptides, have a broad spectrum of activity and targeting even to multi-drug resistant (MDR) bacteria, therefore, they have been extensively studied and developed as novel therapeutic antibacterial agents., Objectives: The study aims to design a novel SK4 hybrid peptide with improved characteristics compared with the BMAP-27 and Cecropin-A natural parents' peptides., Methods: The bioinformatic analysis of the SK4 peptide compared with the parents BMAP-27 and Cecropin-A peptides was conducted and fully characterized using specialized software. The antimicrobial and antibiofilm activity of SK4 was tested, followed by a synergistic study with five conventional antibiotics (Levofloxacin, Rifampicin, Chloramphenicol, Doxycycline, and Ampicillin). Finally, the cytotoxicity against horse erythrocytes and mammalian cells was assessed., Results: The SK4 peptide demonstrated broad-spectrum antimicrobial activity against both grampositive and gram-negative bacteria. The peptide also did not show any hemolytic activity even when used at concentrations ten folds higher than its MICs value. The SK4 peptide also showed a synergistic mode of action when combined with antibiotics, which resulted in a significant decrease in MIC values for both the peptide and the antibiotics., Conclusion: The SK4 peptide showed better activity, selectivity, and safety profile than the parent peptides, making it a novel potential treatment for MDR bacterial infections., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Myristyl nicotinate is a prodrug of nicotinic acid. In this research, the kinetics of hydrolysis for myristyl nicotinate was studied in an aqueous phosphate buffer solution within a 5-10 pH range and constant ionic strength at a high temperature which was 80 °C to perform accelerated hydrolysis experiments. The effect of temperature, ionic strength, buffer concentrations, and buffer type was studied. The degradation was monitored using a validated HPLC method. The kinetics of hydrolysis of myristyl nicotinate was also studied in skin and liver homogenates. The hydrolysis was found to follow pseudo-first-order kinetics. The rate constant was calculated from the slope of a linear plot of Ln transformation (Ln) of the remaining parent prodrug concentration versus time. The hydrolysis was found pH- dependent, and a pH rate profile was constructed. Moreover, the hydrolysis rate of the prodrug was found to be buffer species dependent. Carbonate buffer has the most catalytic effect over borate and phosphate buffers. The effect of temperature on the kinetics of hydrolysis of myristyl nicotinate in phosphate buffer at pH 9 at 343, 348, 353, and 358°K was studied. The hydrolysis was found to follow the Arrhenius equation. From the Arrhenius plot, the half-life at 25 °C, and the activation energy were calculated and were found to be 466.5 days and 24.57 kcal mol -1 , respectively. The hydrolysis of the prodrug was faster in liver and skin homogenates than those in aqueous buffer solutions. The pseudo-first-order rate constants were found to be 0.012, 0.028 min -1 for myristyl nicotinate in the liver, and skin homogenates, respectively.

Introduction: This study investigated the prevalence of depression among the Jordanian caregivers of patients with breast cancer and its effect on their health-related quality of life (QOL)., Methods: This was a cross-sectional study with a sample that consisted of 122 caregivers recruited from 2 hospitals in Jordan over 5 months. A validated questionnaire was used to assess the prevalence of depression symptoms and the aspects of QOL among the participants using Beck's Depression Inventory-II score and the 36-Item Survey Form (SF-36) score., Results and Discussion: Depression symptoms were revealed in 27.9% of caregivers. Regarding the QOL, the mental health (MH) subscale was considerably associated with caregivers' age (P=0.007). The marital status of caregivers was significantly associated with pain (Bodily Pain BP) ( P =0.015), Beck's Depression Inventory (BDI; P =0.009), and social functioning (SF) ( P =0.008). The number of caregivers' siblings was considerably associated with MH ( P =0.040) subscale. The monthly income of caregivers was associated with BP ( P =0.042). The residency of caregivers was considerably connected with role limitations because of emotional problems (RE) (P=0.027) and role limitations due to physical health (RF) (P=0.013) subscales. There was a significant correlation between the existing family history of depression with RF ( P =0.009), RE ( P =0.005), SF ( P =0.003), and energy/fatigue (Vitality VT) ( P =0.001) subscales. Furthermore, the physical activity of caregivers was connected with the RF ( P =0.030), general health (GH) ( P =0.018), RE ( P =0.015), and MH ( P =0.003) subscales., Conclusion: Around a third of the caregivers revealed depression symptoms. The QOL subscales for these caregivers were connected with various health and social factors, such as age, number of siblings, marital status, monthly income, residency, family history of depression, and physical activity. The evaluation of the mental and physical well-being of caregivers should always be considered and managed to help them to cope with their QOL., Competing Interests: The authors declare no conflict of interest, financial or otherwise., (© 2022 Rababa’h et al.)

Paclitaxel (PTX) is a hydrophobic chemotherapeutic agent cytotoxic against many serious cancers. This study aimed at designing novel PTX nanocrystals (PTX-NCs) coated with the biocompatible and biodegradable hydroxypropyl-beta-cyclodextrin (HPβCD) polymer with specific characteristics through the formation of a non-inclusion complex. Briefly, PTX-NCs were prepared by the anti-solvent method followed by homogenization. Then, the surface of the prepared PTX-NCs was modified using the HPβCD coat (HPβCD-PTX-NCs). The prepared nanocrystals, both coated and uncoated, were characterized in terms of size, polydispersity index, charge, morphology, and stability. Moreover, the nanocrystals were investigated using powder X-ray diffraction (PXRD), differential scanning calorimeter (DSC), and Fourier transform infrared spectroscopy (FTIR). As well, the in vitro release of PTX from the nanocrystals was determined under conditions similar to the IV route of administration. Furthermore, the tendency of the nanocrystals to induce hemolysis was investigated. Results indicated that the size was about 241.4 and 310.5 nm, the polydispersity index was 0.14 and 0.21, and the zeta potential was about - 22.6 and - 16.4 mV for PTX-NCs and HPβCD-PTX-NCs, respectively. Additionally, the PXRD, FTIR, and DSC profiles can be explained by the NCs' integrity and coat formation. The SEM images showed that both PTX-NCs and HPβCD-PTX-NCs have rod-like structures. Moreover, HPβCD-PTX-NCs had significantly superior in vitro release than both PTX-NCs and PTX. Interestingly, the hemolytic assay showed that HPβCD-PTX-NCs had a more efficient and safer profile than PTX-NCs. This study emphasized that HPβCD could be an interesting candidate for the surface modification of PTX-NCs providing superior properties such as release and safety profiles., (© 2022. The Author(s), under exclusive licence to American Association of Pharmaceutical Scientists.)

In this study, mucoactive self-emulsifying drug delivery systems (SEDDSs) based on sustained release of N-acetylcysteine (NAC) were developed for providing effective intestinal mucopermeation. Polymeric ionic complexes of NAC were formed with polyethyleneimine (PEI), Eudragit E 100, and Eudragit RS 100 and loaded into a novel SEDDS. The SEDDSs exhibited a stable average size of 75 ± 12 nm (polydispersity index (PDI) < 0.3) and showed a rise in the zeta potential from −17.31 mV to −7.72 mV. On Caco-2 cells, SEDDSs at 1−3% were non-cytotoxic. An average of 91.8 ± 5.4% NAC was released from SEDDSs containing Eudragit E 100 (p ≤ 0.05) and Eudragit RS 100 (p ≤ 0.001) complexes at a significantly slower rate within 80 min, whereas the SEDDS containing PEI released NAC in a matter of seconds. Similarly, the SEDDS complexes revealed a time-dependent reduction in mucus dynamic viscosity of 52.6 ± 19.9%. Consequently, as compared with a blank SEDDS, mucodiffusion revealed about 2- and 1.8-fold significantly greater mucopermeation of SEDDSs anchoring Eudragit E 100−NAC and RS 100−NAC complexes (p ≤ 0.05), respectively. The mucoactive SEDDSs, which steadily released NAC while permeating the mucus, were linked to a significantly increased mucopermeation in vitro as a result of optimal mucolytic targeting.

(1) Background: Atrial fibrillation (AF) is the most common arrhythmia causing an increased risk of mortality and morbidity. It is classified into paroxysmal and non-paroxysmal AF depending on the duration and frequency of the episodes. (2) Aims: Our goal was to investigate and compare the clinical profiles, risk of co-morbidities, the use of oral anticoagulation, and outcomes of patients with paroxysmal and non-paroxysmal AF in inpatient and outpatient settings. (3) Methods: Data were extracted from 28 different hospitals and centers in Jordan with a total of 2160 patients enrolled in the study using an observational non-interventional study model. The clinical features and the use of oral anticoagulants were compared in patients with paroxysmal and non-paroxysmal AF. (4) Results: Paroxysmal AF was documented in 35.6% (769) of the patients and non-paroxysmal types in 63.9% (1380); in addition, the type of AF was unknown in 11 (0.5%) patients. Our results showed that non-paroxysmal AF patients tend to be older with more co-morbidities and higher CHA2DS2-VASC and HAS-BLED scores. They also have higher rates of hypertension and diabetes. Anticoagulant, antiarrhythmic, and diuretic agents, overall, were used more in non-paroxysmal AF than paroxysmal AF. Hospital admissions were also more frequent in non-paroxysmal AF due to various factors, some of which are heart failure, bleeding risk, and COPD. (5) Conclusions: Non-paroxysmal AF is more common among Jordanian AF patients. The prevalence of comorbidities and the use of different types of therapies, especially anticoagulants, were higher in these patients.

Introduction: Sleep disorders are extremely prevalent in the general population. College students are more susceptible to sleep problems. This is due to the increased competition in getting a job position and the current alterations in the labor market. Poor sleep is prevalent and has deleterious effects on college students, but its frequency among college students has not been documented in Jordan. So, the aims of this study are to assess the prevalence of daytime sleepiness among medical college students in Jordan and to look for any links between daytime sleepiness and academic performance., Methods: A cross-sectional study performed on medical and paramedical specialties students and Epworth sleepiness Sscale (ESS) was used. To assess the students' academic performance, the cumulative grade point average was utilized., Results: 977 students from five medical colleges participated in the study. ESS scores were abnormal in 34.4% of students and were considered to have daytime sleepiness. Significant lower ESS scores were associated with students who reported good sleep quality than students who reported poor sleep quality. Significant lower ESS scores were reported by students who slept more than 7 hours compared with students who slept less than 6 hours. The ESS scores were not significantly associated with students' CPGA., Conclusion: Daytime sleepiness is highly prevalent among medical students in Jordan. The data of this study might be very helpful to assess the academic policy makers to develop intervention strategies that resolve the sleep disturbances in college students and reduce its impact on the academic achievements., Competing Interests: The authors declare no conflict of interest., (Copyright © 2022 Mohammad Alqudah et al.)

Background: Emerging health professionals in undergraduate programs should be equipped to provide care to people with substance use disorder (SUD). The students' personal attributes may impact their attitude toward those with SUD. This study aims to evaluate the impact of personal attributes of Jordanian undergraduate health students on their attitudes toward SUD and examine the relationship between the personal attributes and their devaluation and discriminatory (stigmatory) behaviour toward those with SUD., Method: A cross-sectional descriptive design was used to examine the attitudes and stigmatory behaviours. The data were collected between May to October 2017 with a structured questionnaire that consisted of three parts: 1) a data sheet to collect the socio-demographic characteristics of the participants, 2) the Acute Mental Health Scale (ATAMHS), and 3) the Devaluation-Discrimination Scale (DDS)., Findings: Younger and females demonstrated a positive attitude toward those with SUD compared to older or male students. Age, gender, and previous experience with SUD are significant factors that affect their attitude., Conclusion: Identifying the attitude to people with SUD and personal attributes of emerging health professionals in Jordan will help identify the need to educate them prior to their entry into practice., Competing Interests: The authors have declared that no competing interests exist.

Paclitaxel (PTX) is a chemotherapeutic agent that belongs to the taxane family and which was approved to treat various kinds of cancers including breast cancer, ovarian cancer, advanced non-small-cell lung cancer, and acquired immunodeficiency syndrome (AIDS)-related Kaposi's sarcoma. Several delivery systems for PTX have been developed to enhance its solubility and pharmacological properties involving liposomes, nanoparticles, microparticles, micelles, cosolvent methods, and the complexation with cyclodextrins and other materials that are summarized in this article. Specifically, this review discusses deeply the developed paclitaxel nanocrystal formulations. As PTX is a hydrophobic drug with inferior water solubility properties, which are improved a lot by nanocrystal formulation. Based on that, many studies employed nano-crystallization techniques not only to improve the oral delivery of PTX, but IV, intraperitoneal (IP), and local and intertumoral delivery systems were also developed. Additionally, superior and interesting properties of PTX NCs were achieved by performing additional modifications to the NCs, such as stabilization with surfactants and coating with polymers. This review summarizes these delivery systems by shedding light on their route of administration, the methods used in the preparation and modifications, the in vitro or in vivo models used, and the advantages obtained based on the developed formulations.

Background: Managing bacterial infections caused by multidrug-resistant (MDR) and biofilmforming bacteria is a global health concern. Therefore, enormous efforts were directed toward finding potential alternative antimicrobial agents, such as antimicrobial peptides (AMPs)., Aim: We aimed to synthesize a novel modified hybrid peptide designed from natural parents' peptides with enhanced activity and reduced toxicity profile., Methods: Rational design was used to hybridize the two antimicrobial peptides, in which the alpha-helical parts of BMAP-28 and LL-37 were combined. Then, several amino acid modifications were applied to generate a modified hybrid peptide named MAA-41. The physicochemical properties were checked using in silico methods. The MAA-41 was evaluated for its antimicrobial and anti-biofilm activities. Synergistic studies were performed with five conventional antibiotics. Finally, the cytotoxicity on mammalian cells and the hemolytic activity were assessed., Results: The MAA-41 revealed a broad-spectrum activity against Gram-positive and Gram-negative bacteria, including standard and MDR bacterial strains. The concentration against planktonic cells ranged between 10 and 20 μM, with higher potency against Gram-negative bacteria. The MAA-41 displayed potent activity in eradicating biofilm-forming cells, and the MBECs were equal to the MIC values reported for planktonic cells. This new peptide exhibited reduced toxicity profiles against erythrocyte cells but not against Vero cells. Combining MAA-41 peptides with conventional antibiotics improved the antimicrobial activity of the combined agents. Either synergistic or additive effects were shown as a significant decrease in MIC to 0.25 μM., Conclusion: This study proposes the validity of a novel peptide (MAA-41) with enhanced antimicrobial activity and reduced toxicity, especially when used as conventional antibiotic combinations., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Aims: In this study, four fluorescein hydrophobic ionic complexes were formed with the cationic polymers Eudragit RS, Eudragit RL, Eudragit E, and polyethyleneimine (PEI) to provide fluorescein sustained release, sustained cellular uptake, and stability., Methods: Complexes were loaded in a self-emulsifying drug delivery system (SEDDS) composed of 40% Tween 80, 20% Kolliphor EL, 15% 2-n-Octyl-1-dodecanol, and 25% dipropylene glycol. SEDDS were investigated regarding their size, polydispersity index (PDI), zeta potential, and cytotoxicity. Fluorescein release from SEDDS was performed in phosphate buffer (pH 6.8 and pH 8), and the released fluorescein was evaluated for cellular uptake. Moreover, fluorescein from all of the SEDDS pre-concentrates was released at different time points to check its long-term stability over six months., Results: The average fluorescein load in SEDDS was 0.045%. SEDDS showed an average droplet size of 24.9 ± 1.6 nm with PDI ≤ 0.3. SEDDS complexes diluted 1:100 increased the zeta potential from -7.3 mV to +3.7 mV and provided > 85% cell viability. A 92.27 ± 3.18% fluorescein exhibited a few seconds of immediate release when used as control or PEI complex in SEDDS. On the contrary, Eudragit-fluorescein complexes in SEDDS showed sustained release of 87.01 ± 5.22% fluorescein in ≤ 70 min with 22.19 ± 14.56% and 59.27 ± 16.57% released at 10 min in pH 6.8 and pH 8 release media, respectively. Comparatively, the medium at pH 6.8 maintained a significantly improved sustained fluorescein release (p ≤ 0.001). Furthermore, Eudragit RS/RL compared to Eudragit E, significantly exhibited a slower fluorescein release rate from SEDDS (p ≤ 0.01). The cellular uptake of the released fluorescein was 72.4 ± 8.2% for all SEDDS complexes after 3 h. Eudragit complexes compared to PEI complex in SEDDS significantly showed m ore sustained fluorescein cellular uptake at 1 h and 2 h (p ≤ 0.001). However, SEDDS complexes showed the longest fluorescein stability with PEI after six months, whereas fluorescein stability for SEDDS containing fluorescein as Eudragit complex and control showed 39.1% and 82.5% fluorescence decrease, respectively, after three months., Conclusion: In the developed SEDDS, the presence of hydrophobic ionic complexes can significantly promote longer stability and sustained cellular uptake of fluorescein while releasing in a sustained manner., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Background: Post-traumatic stress disorder (PTSD) is a genuine obstructing mental disorder. As indicated by the name, it is related to the patients' stress augmented by life-threatening conditions or accidents. The PTSD has linked to oxidative stress that can result in neurodegeneration. L-carnitine (L-CAR) is known for its antioxidant properties, which can protect against neuronal damage., Objective: In the current study, we investigated the beneficial effects of L-CAR on the memory impairment induced by PTSD using a rat model., Methods: A model of single-prolonged stress (a cycle of restraining, forced swimming, rest, and finally diethyl ether exposure for 2 h, 20 min, 15 min, and 1-2 min, respectively) was used to induce PTSD-like behavior. Intraperitoneal L-CAR treatment (300 mg/kg/day) was introduced for four weeks. Both memory and special learning were evaluated utilizing the radial arm water maze (RAWM). Moreover, the levels of glutathione peroxidase (GPx), glutathione reduced (GSH), and glutathione oxidized (GSSG) were assessed as biomarkers oxidative stress in the hippocampus., Results: The results demonstrated that both the short and long-term memories were impaired by PTSD/SPS model (P < 0.05), while L-CAR treatment prevented this memory impairment in PTSD rats. Besides, L-CAR prevented the reduction in GPx activity and increase in GSSG, which were altered in the hippocampus of the PTSD/SPS rats (P < 0.05). Levels of GSH were not changed in PTSD and/or L-CAR rats., Conclusions: L-CAR administration prevented short- and long-term memories' impairments induced in the PTSD/SPS rat model. This is probably related to its antioxidant effects in the hippocampus.

Purpose: Accumulating evidence indicates that elevated levels of methionine are associated with cognitive decline, including loss of memory. The exact mechanisms behind this observation are not completely understood but could be related to an increase in oxidative stress markers in hippocampal tissues. The above increase in oxidative stress could be directly caused by an increase in the blood levels of methionine (hypermethioninemia) or one of its metabolites, such as homocysteine. Pioglitazone is a drug primarily used for the treatment of type 2 diabetes mellitus. Several reports showed that using pioglitazone protects against cognitive decline observed in Alzheimer's disease. Pioglitazone has antioxidant properties independent of its hypoglycemic effects. Taken together, we hypothesized that pioglitazone protects against memory loss triggered by elevated levels of methionine through lowering oxidative stress in the hippocampus., Methods: To test this hypothesis, we used chronic administration of L-methionine in a rat model. Spatial learning and memory were evaluated in the model using a radial arm water maze (RAWM). The levels of several markers related to oxidative stress were measured in hippocampal tissues recovered from experimental rats., Results: Current results showed that administration of L-methionine was associated with a significant loss of short- and long-term memory and an increase in blood homocysteine levels. The above memory changes were associated with an increase in lipid peroxidation and a decrease in the activity of catalase and glutathione peroxidase antioxidant enzymes in the hippocampus. The combined treatment of pioglitazone with L-methionine protected rat model from memory loss. It also prevented changes observed in lipid peroxidation and changes in the activity of catalase and glutathione peroxidase enzymes., Conclusion: Current findings indicate that pioglitazone is a viable therapeutic option that protects against cognitive changes observed upon administration of L-methionine., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Background: COVID-19 may have a role in myocardial injury in some patients, which can lead to multiple cardiovascular consequences. Electrocardiography (ECG) is useful to detect cardiac involvement of COVID-19., Objective: In this study, we aimed to identify the pattern of ECG findings in COVID-19 patients., Methods: We retrospectively evaluated the clinical data of 176 patients diagnosed with COVID-19 along with their ECG findings on admission and during hospitalization., Results: Out of 176 patients, 56.8% were males. The mean age of the patients was 64.4 (SD: 15.4) years. Twenty-five patients were obese (Body mass index "BMI" > 30). Comorbidities including hypertension, diabetes mellitus, and coronary artery disease were found in 70.5%, 52.3%, and 24.4% of patients, respectively. Only 17% of patients had normal ECG readings, and the rest had abnormalities of various types. Heart rate was normal in 67.6% of patients, the rest were tachycardiac (29.0%) or bradycardiac (3.4%). Findings included a widened QRS complex in 6.2% of patients, 79.0% of patients had a prolonged PR interval, and 9.1% had a prolonged QT interval. The most common ECG abnormalities were sinus tachycardia (20.5%) and atrial fibrillation (18.2%). We found a correlation between mortality and atrial fibrillation (p=0.021) and ventricular premature contraction (p=0.007). As for complications, atrial fibrillation and sinus tachycardia were significantly correlated with major complications including death, need for positive pressure ventilation (PPV), intensive care unit (ICU) admission, myocardial infarction, and acute respiratory distress syndrome (ARDS)., Conclusion: ECG is a robust indicator of myocardial involvement of the COVID-19 patients. This study highlighted the diagnostic and prognostic importance of conducting ECG on admission and during hospitalization for COVID-19 patients. More investigation is required to determine the diagnostic accuracy and prognostic value of this modality., Competing Interests: The authors declared no conflict of interest., (© 2021 Sukaina Alrawashdeh, Nasr Alrabadi, Omar Obeidat, Nizar Alnabahneh, Fares Abu Zanouneh, Zain Almomani, Mohammad Aldalahmeh1, Rasheed Ibdah, Basheer Khassawneh.)

Background: Coronavirus disease 2019 (COVID-19) pandemic and its associated precautionary measures have substantial impacts not only on the medical, economic, and social context but also on psychological health. This study aimed to assess the obsession toward COVID-19 preventive measures among undergraduate medical students during the early phase of the pandemic in Jordan. Methods: Online questionnaires were distributed between March 16, 2020 and March 19, 2020. Socio-demographic characteristics were collected, and self-reported obsession toward COVID-19 preventive measures was assessed using a single question.COVID-19 knowledge, risk perception, and precautionary measures were evaluated using scales. Using the chi-square test, Student t -test, and one-way ANOVA, we assessed the differences in the obsession of students with socio-demographic characteristics and scores of the scales. Results: A total of 1,404 participants (60% were female participants) completed the survey with a participation rate of 15.6%. Obsession with preventive measures was reported by 6.8%. Obsession was significantly more common among women (9.2%) than men (3.3%) and students who attended COVID-19 lectures (9.5%) than those who did not attend such lectures (5.8%) ( p < 0.001 and p = 0.015, respectively). Obsessed participants reported significantly higher levels of COVID-19 knowledge ( p = 0.012) and precautionary measures ( p < 0.001). COVID-19 risk perception had a mild effect size difference but with no statistical significance ( p = 0.075). There were no significant differences in the academic levels of participants ( p = 0.791) and universities ( p = 0.807) between students who were obsessed and those who were not. Conclusions: Obsession is one of the significant but unspoken psychological effects of COVID-19 precautionary measures among undergraduate medical students. Medical schools should be equipped with means to handle pandemic psychological effects., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Al-Shatanawi, Sakka, Kheirallah, Al-Mistarehi, Al-Tamimi, Alrabadi, Alsulaiman, Al Khader, Abdallah, Tawalbeh, Saleh, Hijazi, Alnsour and Younes.)

Background: Following the remarkable spread of coronavirus disease 2019 (COVID-19), worldwide, it quickly became apparent that many public health systems worldwide were not prepared to manage such a pandemic. We aimed to assess the perceptions of primary care physicians (PCPs) in Jordan towards their role during COVID-19., Methods: A cross-sectional study using a self-administered questionnaire was performed. The study participants included PCPs from the Ministry of Health, academic institutions, and the private sector in Jordan., Results: A total of 221 PCPs participated in the study. Most participants reported not having received any training on infection control (59.7%) or COVID-19 (81%). More than half PCPs (53.4%) felt positive about the way patients received and/or complied with their instructions. More than half PCPs (55.7%) educated their patients on protective measures against COVID-19 infection and considered this as part of their role and responsibility. Over 80% of the participants would apply social distancing, hand sanitation, facial masks, and patient education, but only half (51.1%) reported planning to order COVID-19 test kits., Conclusions: PCPs had a positive attitude towards controlling COVID-19 infection and showed a willingness to educate patients on how to protect themselves. However, PCPs should be provided special training on COVID-19., (© 2021 John Wiley & Sons Ltd.)

Abstract: The corona virus disease-19 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, had health and economic results that profoundly affected communities worldwide. Investigating the seroprevalence of SARS-Cov-2 in blood donors is of a significant clinical and scientific value as it adds to knowledge about local herd immunity levels.To study the prevalence of SARS-Cov-2 infection among blood donors at a tertiary referral hospital in the north of Jordan.This is a prospective study that included all blood donors between September 2020 and March 2021. Donors' IgG antibodies were qualitatively immunoassayed to determine the antibody status against SARS-CoV-2. The Elecsys Anti-SARS-CoV-2 technique was utilized.One thousand samples were tested by total antibody against SARS-CoV-2. The median age was 29 years, 96.7% were males. The seroprevalence was 14.5%, and 80% of the positive participants did not report previous COVID-19 infection. The seroprevalence of COVID-19 antibodies was less among smokers and those with an O blood group and higher among donors with an AB blood group.The prevalence of COVID-19 among healthy young blood donors at a tertiary teaching health facility in the north of Jordan was 14.5%. Smokers and those with an O blood group were less likely to be seropositive, as opposed to donors with an AB blood group., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.)

The purpose is to delineate the clinico-pathologic features of papillary thyroid carcinoma (PTC) occurring in a background of Hashimoto's thyroiditis (HT). A retrospective analysis of consecutive PTC patients who underwent surgery at an academic center between Jan. 2010 and Jan. 2020 was performed. The primary end point was to assess whether a background of HT implied a higher likelihood for postoperatively determined high-risk histopathologic features. Accordingly, its implication on initial surgical planning. Tumor high-risk features included aggressive histologic variants, lymphovascular invasion, extrathyroidal extension, multifocality, and positive nodal metastasis. To achieve the primary outcome of interest, a two group-designation was followed: group A (none-HT-group) and group B (HT-group). The two groups were also compared regarding postoperative complications as a secondary outcome of interest. In the specified period, 331 patients were found to have a histologically proven diagnosis of PTC. Group A accounted for 80% (265/331) of the study cohort, while group B accounted for the remainder 20%. PTC was significantly more prevalent in the absence of HT (p < 0.0001). Both groups were comparable in mean-patient-age. However, Group B demonstrated a considerably higher male:female ratio (1:10 vs. 1:3; p = 0.01). All postoperatively determined high-risk histopathologic features were comparable in both groups (p > 0.05). Nevertheless, transient hypoparathyroidism was considerably higher in group B (12% vs. 23%; p = 0.02). A background of HT does not seem to reflect a more aggressive cancerous biologic behavior. Therefore, it should not preclude the conservative surgical strategy adopted by the most recent clinical practice guidelines., (© 2021. Italian Society of Surgery (SIC).)

Background: Depression and cardiovascular disorders are significant determinants of health that affect the quality of life and life expectations. Despite the high importance of depression screening among Coronary Artery Disease (CAD) patients, the time being to assess and treat it remains controversial., Objectives: This study aims to assess the prevalence estimates and severity of depressive symptoms and determine the risk factors associated with developing such symptoms among CAD patients after ten days of Percutaneous Coronary Intervention (PCI)., Methods: All patients who underwent elective PCI between October 5, 2019, and Mid-March 2020 and diagnosed with CAD were included in this cross-sectional study. CAD was defined as intra-luminal stenosis of ≥ 50% in one or more of the coronary arteries. Depressive symptoms were screened after ten days of the PCI utilizing the patient health questionnaire-9 (PHQ-9) tool. A linear regression model was used to assess the adjusted effects of independent variables on PHQ-9 scores. Electronic medical records, clinical charts, and PCI and echocardiogram reports were reviewed., Results: Out of 385 CAD patients, a total of 335 were included in this study, with a response rate of 87%. The participants' mean (±SD) age was 57.5±10.7 years, 75.2% were males, 43% were current smokers, and 73.7% had below bachelor's education. The prevalence estimates of patients with moderate to severe depressive symptoms (PHQ-9 ≥10) was 34%, mild depression 45.1%, and normal 20.9%. Female gender, low educational level and diabetes mellitus were found to be the significant independent predictors of depression among our cohort with (t(333) = 3.68, p <0.001); (t(333) = 5.13, p <0.001); and (t(333) = 2.79, p =0.042), respectively., Conclusion: This study suggests a high prevalence of depressive symptoms among CAD patients after ten days of PCI. Approximately one out of three patients with CAD have significant symptoms of depression, which is an alarming finding for clinicians. Moreover, this study demonstrates a lack of sufficient depression recognition and management in similar study settings. Integration of mental health assessment and treatment among patients with CAD as soon as after PCI is recommended for optimal and effective treatment and to obtain the best outcomes., (© 2021 Rawashdeh et al.)