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result(s) for
"Rashwan, Nagwan I."
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Nutritional status and extended metabolic screening in Egyptian children with uncomplicated type 1 diabetes
2024
Nutritional status assessment, including amino acids, carnitine, and acylcarnitine profile, is an important component of diabetes care management, influencing growth and metabolic regulation. A designed case–control research included 100 Egyptian participants (50 T1DM and 50 healthy controls) aged 6 to 18 years old. The participants' nutritional status was assessed using the Body Mass Index (BMI) Z-score. Extended metabolic screening (EMS) was performed using a high-performance liquid chromatography-electrospray ionization-mass spectroscopy system to evaluate the levels of 14 amino acids, free carnitine, and 27 carnitine esters. T1DM children had considerably lower anthropometric Z-scores than the control group, with 16% undernutrition and 32% short stature. Total aromatic amino acids, phenylalanine, phenylalanine/tyrosine ratio, proline, arginine, leucine, isoleucine, free carnitine, and carnitine esters levels were considerably lower in the diabetic group, suggesting an altered amino acid and carnitine metabolism in type 1 diabetes. BMI Z-score showed a significant positive correlation with Leucine, Isoleucine, Phenylalanine, Citrulline, Tyrosine, Arginine, Proline, free carnitine, and some carnitine esters (Acetylcarnitine, Hydroxy-Isovalerylcarnitine, Hexanoylcarnitine, Methylglutarylcarnitine, Dodecanoylcarnitine, Tetradecanoylcarnitine, and Hexadecanoylcarnitine). HbA1c% had a significant negative correlation with Total aromatic amino acids, Branched-chain amino acid/Total aromatic amino acids ratio, Glutamic Acid, Citrulline, Tyrosine, Arginine, Proline, and certain carnitine esters (Propionylcarnitine, Methylglutarylcarnitine, Decanoylcarnitine, Octadecanoylcarnitine and Octadecenoylcarnitine), suggest that dysregulated amino acid and carnitine metabolism may be negatively affect the glycaemic control in children with TIDM. In conclusion, regular nutritional assessments including EMS of T1DM patients are critical in terms of diet quality and protein content for improved growth and glycemic management.
Journal Article
Postexamination item analysis of undergraduate pediatric multiple-choice questions exam: implications for developing a validated question Bank
by
Rashwan, Nagwan I.
,
Nayel, Omnia A.
,
Aref, Soha R.
in
Accreditation
,
Analysis
,
Behavioral Objectives
2024
Introduction
Item analysis (IA) is widely used to assess the quality of multiple-choice questions (MCQs). The objective of this study was to perform a comprehensive quantitative and qualitative item analysis of two types of MCQs: single best answer (SBA) and extended matching questions (EMQs) currently in use in the Final Pediatrics undergraduate exam.
Methodology
A descriptive cross-sectional study was conducted. We analyzed 42 SBA and 4 EMQ administered to 247 fifth-year medical students. The exam was held at the Pediatrics Department, Qena Faculty of Medicine, Egypt, in the 2020–2021 academic year. Quantitative item analysis included item difficulty (P), discrimination (D), distractor efficiency (DE), and test reliability. Qualitative item analysis included evaluation of the levels of cognitive skills and conformity of test items with item writing guidelines.
Results
The mean score was 55.04 ± 9.8 out of 81. Approximately 76.2% of SBA items assessed low cognitive skills, and 75% of EMQ items assessed higher-order cognitive skills. The proportions of items with an acceptable range of difficulty (0.3–0.7) on the SBA and EMQ were 23.80 and 16.67%, respectively. The proportions of SBA and EMQ with acceptable ranges of discrimination (> 0.2) were 83.3 and 75%, respectively. The reliability coefficient (KR20) of the test was 0.84.
Conclusion
Our study will help medical teachers identify the quality of SBA and EMQ, which should be included to develop a validated question bank, as well as questions that need revision and remediation for subsequent use.
Journal Article
Clinical, biochemical, and genetic study of TACE/TNF-α/ACE signaling pathway in pediatric COVID-19 infection
by
Hassan, Mohammed H.
,
Mansour, Haggagy
,
Ahmed, Ahmed El-Abd
in
covid-19 related; tumor necrosis factor-alpha converting enzyme; tumor necrosis factor-alpha; angiotensin converting enzyme; single nucleotide polymorphisms
,
Original
,
pediatric multisystem inflammatory disease
2024
Background: Pediatric patients infected with coronavirus disease 2019 (COVID-19) have unique clinical characteristics. Tumor necrosis factor (TNF) is a proinflammatory cytokine that greatly contributes to tumor pathogenesis.Purpose: To describe the presenting characteristics of COVID-19 infection among pediatric patients, and investigate the possible role of the TNF-α signaling pathway.Methods: This prospective case-control study included 50 Egyptian pediatric patients with COVID-19 and 50 healthy controls. Clinical, laboratory, and radiological assessments were performed. Serum TNF-alpha (TNF-α), TNF-α-converting enzyme (TACE), and angiotensin-converting enzyme 2 (ACE2) were measured using enzyme-linked immunosorbent assay. ACE (I/D) (rs4646994), ACE2 rs2285666, and TNF-α-308G/A single nucleotide polymorphisms (SNPs) were performed using conventional polymerase chain reaction techniques with or without restriction fragment length polymorphism.Results: The median age was 1 year (interquartile range [IQR], 0.31–2.50 years) in the case group and 1.45 years (IQR, 1.00–3.00) in the control group. The main presenting symptoms were fever (92%), dry cough (74%), and dyspnea (72%). The lymphocytic count was normal in 14 patients (28%), decreased in 16 patients (32%), and increased in 20 patients (40%) of the case group. Positive chest computed tomography finding of COVID-19 infection were demonstrated among 40% of patients using COVID-19 Reporting and Data System categories (ground-glass opacity with or without consolidations in the lungs). There were significant increased serum TACE and TNF-α with decreased ACE2 levels among cases versus controls (P< 0.001). The GG genotype and G allele of the TNF-α-308G/A SNP were significantly higher in patients than in controls (P<0.05 for both), with insignificant differences in genotype and allelic frequencies in the ACE (I/D) (rs4646994) and ACE2 rs2285666 SNPs.Conclusion: The TNF signaling pathway was significantly activated in pediatric COVID-19 infection. Only the TNF-α-308G/A SNP was significantly associated with pediatric COVID-19 infection.
Journal Article
Serum Levels of Growth-Associated Protein-43 and Neurotrophin-3 in Childhood Epilepsy and Their Relation to Zinc Levels
by
Bakri, Ali Helmi
,
Hassan, Mohammed H.
,
Ahmed, Ahmed El-Abd
in
antioxidant activity
,
Biochemistry
,
Biomarkers
2023
Background
Epilepsy is one of the most common neurological disorders, and it places a significant economic strain on the healthcare system around the world. Although the exact mechanism of epilepsy has yet to be illustrated, various pathogenic cascades involving neurotransmitters and trace elements have been reported. We aimed to investigate the serum levels of growth-associated protein-43 (GAP-43) and neurotrophin-3 (NT-3) among cohort of Egyptian children with epilepsy and correlate these biomarkers with their zinc levels.
Methods
This case–control study included 50 pediatric patients with epilepsy who were comparable with 50 controls. Neurological assessment and electroencephalogram (EEG) were done to all included children. Biochemical measurements of serum GAP-43 and NT-3 using enzyme linked immunosorbent assays (ELISA), and total antioxidant capacity (TAC) and zinc using colorimetric assays, were performed to all participants.
Results
There was significantly frequent positive parental consanguinity among cases with significantly frequent generalized onset seizures (94%) than simple partial seizure (6%). There were significantly lower serum GAP-43 and zinc levels with significantly higher TAC among cases vs. the controls,
p
˂0.05 for all. There was no significant difference in the serum levels of NT-3 among epileptic children vs. the controls,
p
= 0.269. Serum Zn was positively correlated with GAP-43 level among epileptic children (
r
= 0.381,
p
= 0.006). Serum GAP-43 in diagnosing childhood epilepsy at cut-off point ≤ 0.6 ng/mL showed 78% sensitivity, 62% specificity, positive predictive value (
PPV
) = 50.6%, negative predictive value (
NPP
) = 84.9% with
AUC
= 0.574.
Conclusion
GAP-43 can be considered a sensitive good negative biomarker in childhood epilepsy which correlated positively with the zinc status.
Journal Article
Consensus Meeting Report “Technology Enhanced Assessment” in Covid-19 Time, MENA Regional Experiences and Reflections
2021
Majority of the assessments, appraisals and placements have been disturbed, with some being cancelled, postponed, or modified in design. New approaches for assessment should be well-thought-out. This work attempts at capturing the collective wisdom of educators in the Middle East and North Africa region (MENA), providing an understanding of the online assessment conceptual framework in the era of COVID-19 that tells the story rather than determining cause and effect, and identifying the biggest gaps that derail the digital transformation.
A qualitative inductive study using the grounded theory approach was implemented following a synchronous virtual online meeting, a summary of the reflections as well as experiences of medical education experts was prepared. Data for this qualitative study were collected from the meeting. The meeting was video-recorded and transcribed by the researchers. Thematic analysis was performed by three separate researcher coders. The authors then discussed together until they reached a consensus.
Three main thematic areas were identified: 1) feasibility, 2) exam fairness/equity and 3) acceptable graduate attributes, society/community acceptance.
The COVID-19 era necessitated revisiting of our assessment strategies to cope with new changes within the available context. Rapid adaptation is required.
Journal Article
Biochemical Assessments of Neurotrophin-3 and Zinc Involvement in the Pathophysiology of Pediatric Febrile Seizures
by
El-Sawy, Samer A
,
Ahmed Ahmed El-Abd
,
Rashwan, Nagwan I
in
Antioxidants
,
Assessments
,
Children
2022
Febrile seizures (FSs) are a common occurrence in young children and a serious concern in pediatric practice; nevertheless, the causes and mechanisms of FS are still unknown. We hypothesized a relation of neuropeptides such as neurotrophin-3 (NT-3) and growth-associated protein-43 (GAP-43) as well as zinc and the oxidant/antioxidant system with pediatric FS. The study included 100 infants categorized into 50 infants with FS and 50 febrile infants without seizures as controls. Clinical assessments, biochemical assays of NT-3 and GAP-43 using ELISA assay kits, and colorimetric measurements of TAC and Zn were performed to all participants. Overall, significant rises of the values of NT-3 and insignificant increases of GAP-43 were detected in children with FS. At the same time, zinc values and the total antioxidant capacity in serum samples were found to be decreased significantly. In addition, a negative correlation was estimated between NT-3 and zinc levels. Serum NT-3 in diagnosing febrile seizures at cutoff point > 49.62 ng/L showed 100% sensitivity, 46% specificity, positive predictive value (PPV) = 48.1%, and negative predictive value (NPP) = 100% with AUC = 0.678. Significant altered circulating NT-3 and zinc levels in FS may indicate their possible role in the pathogenesis of FS. This may open a way for further research and warrants enlightening of the pathophysiological details of FS.
Journal Article