Background and aims. Open reading frames (ORFs) are sections of a reading frame that do not include any stop codons. A reading frame is a sequence of nucleotide triplets read as codons indicating amino acids; a single strand of DNA has three potential reading frames. Long ORFs in a DNA sequence may represent possible protein-coding areas. In addition to extended ORFs, which assist in gene locus prediction, there is yet another type of ORFS known as small open reading frames (smORFs), which have 100 codons or fewer. Methods. We develop an offline, cross-platform, and dependable detection tool for regular ORFs and smORFs prevalent in biomedical studies. Results. In this work, the most ORFs were found in the Bos taurus (Cattle) Insulin gene, which had 17 consecutive ORFs, while the fewest ORFs were reported in the Cani's lupus (Dog) Insulin gene, which had only 4 ORFs. Conclusion. The software meets the expected demarcation restrictions. We strongly advise more research into the detection of nested ORFs.

Environmental factors are known to influence carcinogenesis. Procarcinogens, such as heterocyclic amines (HAs) and polycyclic aromatic hydrocarbons (PAHs), are examples of these environmental factors. Procarcinogens are chemically inert and require bioactivation, via enzymes such as Cytochrome P450 (CYP). CYP1A1 isoform, regulated by Aryl hydrocarbon receptor (AhR), plays a significant role in the bioactivation of PAHs and HAs. AhR has multiple co-activators and co-repressors, of which SMRT (silencing mediator for retinoid and thyroid hormone receptors) has been identified as a major co-repressor for AhR. In the present study we examined the effect of SMRT over expression on the Cyp1a1 mRNA levels in murine hepatoma Hepa 1c1c7 cell line. Hepa 1c1c7 cells were maintained in Dulbecco's modified Eagle's medium (DMEM), and competent cells were successfully produced using calcium chloride method. Cells were transformed using plasmid DNA and Lipofectamine. TCDD was employed as an inducing agent for CYP1A1. Total cellular RNA was isolated and real-time PCR of Cyp1a1 was conducted. Statistical analysis was conducted using one-way analysis of variance (ANOVA) followed by Student–Newman–Keul’s test. Our results showed that, cells transfected with the co-repressor SMRT has lower TCDD-mediated induction of Cyp1a1 mRNA without affecting constitutive Cyp1a1 mRNA levels, i.e., SMRT was able to significantly decrease inducible Cyp1a1 mRNA levels in Hepa 1c1c7 cells. Moreover, our work demonstrated that calcium chloride is a convenient method for routine transformation. Our work will open new avenues for treatment of carcinogenesis involving CYP1A1 inducing carcinogens.

Purpose: This study was conducted to determine the impact of supervisory behaviour on organisational commitment in Libyan Government Institutions through the mediation role of organisational justice. The population of the study is managers and employees in the capital of Tripoli and the western part of Libya. The sample size was 302, selected randomly. This study used oriented supervisory behaviour, supportive supervisory behaviour, participatory supervisory behaviour, and supervision behaviour directed at achievement as independent variables. The mediating variable is organisational justice, and the dependent variable is organisational commitment.

Results: The result confirmed a significant impact of the independent variables on organisational commitment. For the mediation effect, organisational justice mediates the relationship between supervisory behaviour, participatory supervisory behaviour, supervisory behaviour, and organisational commitment. In contrast, no significant mediation was found between supervision behaviour directed at achievement and organisational commitment.

Background and aims. Open reading frames (ORFs) are sections of a reading frame that do not include any stop codons. A reading frame is a sequence of nucleotide triplets read as codons indicating amino acids; a single strand of DNA has three potential reading frames. Long ORFs in a DNA sequence may represent possible protein-coding areas. In addition to extended ORFs, which assist in gene locus prediction, there is yet another type of ORFS known as small open reading frames (smORFs), which have 100 codons or fewer. Methods. We develop an offline, cross-platform, and dependable detection tool for regular ORFs and smORFs prevalent in biomedical studies. Results. In this work, the most ORFs were found in the Bos taurus (Cattle) Insulin gene, which had 17 consecutive ORFs, while the fewest ORFs were reported in the Cani's lupus (Dog) Insulin gene, which had only 4 ORFs. Conclusion. The software meets the expected demarcation restrictions. We strongly advise more research into the detection of nested ORFs.

Background

Spinal anesthesia (SA) remains the most popular anesthetic technique for caesarean sections (CS), as it abolishes the possible risks of pregnant airway management. The ability to anticipate the episodes of hypotension following spinal anesthesia will enable anesthesiologists to interfere early and provide better patient management.

Objective

The aim of the current study was toevaluate the perfusion index and the blood pressure positional changes in the prediction of hypotension after SA in CSs.

Patients and methods

A prospective cohort study was conducted at the Obstetrics and Gynecology Department of Zagazig University Hospitals. A total of 80 pregnant women who were prepared for elective CS delivery, aged from 18 to 40 years with ASA-II (American Society of Anesthesiologists Status), were recruited in the current study.

Results

The mean perfusion index (PI) pre-spinal was 5.81 and immediately after spinal was 4.65 with a statistically significant decrease (P<0.001). There was also a statistical difference between the mean of mean arterial pressure (MAP) of the studied cases pre-spinal at the lateral position (91.76 mmHg) and mean MAP in the supine position (83.29 mmHg) with P-value <0.001, with a mean difference of 8.48 mmHg. PI cut-off >4 had a sensitivity of 85.9%, specificity of 75%, and accuracy of 83.8% in the prediction of hypotension. The positional change in blood pressure at cut-/off >5 mmHg had a sensitivity of 82.8%, specificity of 75%, and accuracy of 81.3% in the prediction of hypotension among cases.

Conclusion

The preoperative PI and positional blood pressure change can predict spinal anesthesia 

Background: Medical students have been shown through multiple studies to be more susceptible to stress and depression than the rest of the population. Libyan students specifically have to undergo the challenges of becoming a doctor while living in the terrifying and stressful outcomes of the Libyan civil war. And the spread of COVID-19 has added to these stressors.

Objective: This study aimed to determine prevalence of depression and anxiety among Libyan medical students and analyze the causing factors.

Methods: A cross sectional study was conducted using an online survey. The survey used the K-10 Kessler psychological distress scale which is a self administered questionnaire used to measure the level of distress. 

Results: A total of 1348 students from 16 Libyan medical schools across the 5 years of study completed the survey. 992 (73.6%) were female students and 356 (26.4%) were male. The mean age (SD) was 22.09 (2.56).

Out of the 1348 participants, 638 (47.3%) scored for severe mental disorder. 213 (15.8%) scored for moderate mental disorder and 200 (14.8%) presented with mild mental disorder. 297 (22%) of the students are likely to be well according to the K-10 psychological distress scale. Out of the students who have had their houses displaced due to the war, 66.3% have presented with moderate to severe mental disorder.

 235 students (17.4%) have reported having suicidal thoughts throughout their time in medical school.

Conclusion: In comparison to similar studies done in other countries, Libyan students scored a higher prevalence of depression. The stress of the current political state of the country and the COVID-19 pandemic were shown to be contributing factors.

Abstract

Diabetes mellitus with hyperglycaemia is a major risk factor for malignant cardiac dysrhythmias. However, the underlying mechanisms remain unclear, especially during the embryonic developmental phase of the heart. This study investigated the effect of hyperglycaemia on the pulsatile activity of stem cell-derived cardiomyocytes. Mouse embryonic stem cells (mESCs) were differentiated into cardiac-like cells through embryoid body (EB) formation, in either baseline glucose or high glucose conditions. Action potentials (APs) were recorded using a voltage-sensitive fluorescent dye and gap junction activity was evaluated using scrape-loading lucifer yellow dye transfer assay. Molecular components were detected using immunocytochemistry and immunoblot analyses. High glucose decreased the spontaneous beating rate of EBs and shortened the duration of onset of quinidine-induced asystole. Furthermore, it altered AP amplitude, but not AP duration, and had no impact on neither the expression of the hyperpolarisation-activated cyclic nucleotide-gated isoform 4 (HCN4) channel nor on the EB beating rate response to ivabradine nor isoprenaline. High glucose also decreased both the intercellular spread of lucifer yellow within an EB and the expression of the cardiac gap junction protein connexin 43 as well as upregulated the expression of transforming growth factor beta 1 (TGF-β1) and phosphorylated Smad3. High glucose suppressed the autorhythmicity and gap junction conduction of mESC-derived cardiomyocytes, via mechanisms probably involving TGF-β1/ Smad3 signalling. The results allude to glucotoxicity related proarrhythmic effects, with potential clinical implications in foetal diabetic cardiac disease.

Background: Acute pediatric encephalitis is a debilitating neurological disorder that develops as a rapidly progressive encephalopathy (usually in less than 6 weeks) due to brain inflammation, autoimmune encephalitis (AE) is a heterogeneous group of recently identified disorders. Despite severe and even prolonged neurologic deficits, dramatic improvements may occur with proper immunotherapy in some patients with AE. Anti-neuronal antibodies have been discovered in cerebrospinal fluid (CSF) of patients, Aim and Objectives: The aim of the current study was to test the relation of early diagnosis with treatment of N-methyl D- Aspartate Receptor autoimmune encephalitis. Patients and Methods: This is Prospective observational cohort study that was carried out at pediatric department, Faculty of Medicine, Zagazig University, the study was conducted on 36 cases, Results: There was no statistical significant difference between the studied groups with and without autoimmune encephalitis regarding results of CSF analysis (larger percentage without autoimmune encephalitis had abnormal CSF analysis). There is a statistical significant difference between the studied groups with and without autoimmune encephalitis regarding prognosis. Conclusion: CSF NMDAR antibodies are highly sensitive biomarker in prediction of mortality and poor prognosis of encephalitis in children.

Abstract

Anaesthesia team should guarantee the patient safety first. To achieve this, it is necessary to be aware of both the anesthetic methods and all potential perioperative physiological changes). Spinal anaesthesia (SA) is the most preferred anesthetic method in caesarean deliveries because it eliminates the potential risks associated with airway management in pregnant women However, SA leads to hypotension in approximately 70% of patients Aortocaval compression caused by the uterus and a decrease in systemic vascular resistance due to sympathetic block induced by SA are important factors in the precipitation of hypotension. Hypotension following SA may cause dizziness, nausea, and vomiting in the mother, as well as fetal acidosis. Pregnant women are more sensitive to local anesthetics, less responsive to vasopressors and have lower mean arterial pressure (MAP) at term.

Background:Coffee and Tea are very popular beverages in Libyan society. They contain many bioactive substances such as polyphenols and catchiness that could have some effects for instance; antioxidant activity. The way of preparation of tea and coffee drinks are different among society. For example, in Libya tea drink is prepared by boiling the crude of fresh tea for 10 min. Therefore, the method of extraction could influence the type and quality of extracted substances. Aims: The goal of the current study was to examine the neuroprotective properties of coffee and tea beverages made by using traditional Libyan techniqueson Parkinson's disease like symptoms induced by haloperidol.Methods: Different tea and coffee beverages (treatment) were prepared and given to rats in a concentration 10%w/v for 3 consecutive weeks.Tea and coffee beverages were made as Libyans do. At day 21, rats were injected IP with 1mg/kg of haloperidol, afterward, the behavioral and motor parameters for Parkinson’s disease were tested.Results:Coffee and Tea treated groups showed significant improvement (p > 0.05)inthe behavioral activity, and in muscle coordination. Also there was a decrease in oxidation markers as treatment resulted in an elevation of glutathione reductase and decreasing in Malondialdehyde levels. In addition, the histopathological investigation showed a reduction in haloperidol induced damage in substantia nigra.Conclusion:The results showeda possible neuroprotective effect of Coffee and Tea against PD.The mechanism of protection might be due to an antioxidant activity.