Publications by authors named "Megahed H"

Article Synopsis
  • - Elemental boron was incorporated into TiNbZrNiCoFe compositionally complex alloys through vacuum arc melting, leading to increased entropy and changes in microstructure assessed by various microscopy techniques and X-ray diffraction.
  • - The addition of boron resulted in new intermetallic phases like TiB and ZrB, which contributed to improved mechanical properties such as increased Young's modulus from 141 GPa (without B) to 260 GPa (with 10.6 at.% B) and enhanced hardness.
  • - While wear resistance improved with increasing boron content, 5.3 at.% B was determined to be the optimal amount due to a balance of strength and microstructure homogeneity, outperforming other
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Introduction: Postmicturition dribble (PMD) is common in males. Little is known about PMD etiology, but it is either secondary to urethral/prostatic surgery or primary (no previous surgery). Despite PMD's high prevalence, the effectiveness of its treatment modalities remains lacking.

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Porocarcinoma is a rare skin malignancy that should be suspected in patients with chronic skin lesions. Although it usually affects the elderly population in sun-exposed areas, it may be seen in younger populations and in nonexposed areas such as the groin.

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The experiment was designed to validate the effect of and its novel commercial product (Navy Cox) on the control of necrotic enteritis (NE). A total of one hundred forty broiler chicks were randomly distributed into seven equal groups: G1, control negative; G2, infected with Eimeria (day 15) and (day 19); G3, treated with Navy Cox before challenge; G4, treated with before challenge; G5, infected and then treated with Navy Cox; G6, infected and then treated with and G7, infected and treated with amoxicillin. Chicken response and immune organ indicants were recorded during the observation period (4 weeks).

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This experiment evaluated the impact of the dietary addition of 1,3-β-glucans (GLU) on broiler chickens’ growth, intestinal histology, blood biochemical parameters, and immunity. Two hundred three-day-old male broilers (Ross 308) (97.93 ± 0.

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The endoplasmic reticulum membrane protein complex subunit 10 (EMC10) is a highly conserved protein responsible for the post-translational insertion of tail-anchored membrane proteins into the endoplasmic reticulum in a defined topology. Two biallelic variants in EMC10 have previously been associated with a neurodevelopmental disorder. Utilizing exome sequencing and international data sharing we have identified 10 affected individuals from six independent families with five new biallelic loss-of-function and one previously reported recurrent EMC10 variants.

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Background: The cytochrome P450 (CYP) isoenzymes have an indispensable role in the metabolic phase of different medications during the treatment of multiple neuropsychiatric disorders. The foremost goal of this study is to evaluate the correlation of the allelic variants within CYP2D6 (*2/*4/*10) gene with the susceptibility for epileptic syndrome as well as the assessment the degree of resistance towards antiepileptic drugs (AEDs).

Methods: This work was designed based on the involvement of 200 participants [100 unrelated healthy controls, 50 AEDs responsive, and 50 AEDs resistant].

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Background: Developmental assessment is an important facility for early detection and intervention of developmental delay in children. Objective: to assess the performance of a sample of middle social class Egyptian infants and toddlers on Bayley Scales of Infant and Toddler Development-third edition (Bayley III), and to compare their cognitive, motor, and communication scores with that of the reference norms.

Methods: It was a cross-sectional pilot study, included 270 children aged 18-42 months.

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Several reports examined the association of the GSTP1 p.Ile105Val (rs1695, c.313A > G) variant with the elevated risk of multiple cancerous diseases involving breast carcinoma, but with inconclusive findings.

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Glycosylphosphatidylinositol (GPI) is a glycolipid that anchors >150 proteins to the cell surface. Pathogenic variants in several genes that participate in GPI biosynthesis cause inherited GPI deficiency disorders. Here, we reported that homozygous null alleles of PIGG, a gene involved in GPI modification, are responsible for the rare Emm-negative blood phenotype.

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Compacted (vermicular) graphite iron (CGI) is used in many substantial applications because its vermicular microstructure has superior mechanical properties at higher temperatures. Production of vermicular graphite cast iron diesel engine cylinder block with various sections' thicknesses is a great challenge especially, if compacted graphite iron is made by controlling the pouring duration. Investigations on microstructure and hardness have been conducted on four different thicknesses (5, 10, 15, and 20 mm) of compacted graphite iron.

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Background: Wolf-Hirschhorn syndrome (WHS) (OMIM 194190) is a multiple congenital anomalies/intellectual disability syndrome. It is caused by partial loss of genetic material from the distal portion of the short arm of chromosome.

Methods: We studied the phenotype-genotype correlation.

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Background: Mortality is conditioned by biological, political and social factors, as well as by culturally defined behaviors and attitudes that historically characterize the stage of development of a country or a region. Women are often in great danger, where they should be safest. Violence against women is the most pervasive yet the least recognized human rights violation in the world.

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Article Synopsis
  • Neuronal migration defects like pachygyria are severe developmental brain issues, and researchers found mutations in the CTNNA2 gene, which encodes αN-catenin, linked to a recessive form of this condition.
  • Loss of αN-catenin in neurons resulted in problems with the stability and migration of neurites, though it did not disrupt β-catenin signaling.
  • The study reveals that αN-catenin interacts with actin and suppresses ARP2/3 activity, suggesting that targeting this pathway could help address neuronal issues related to CTNNA2 mutations.
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Background: Lack of awareness and recognition of child maltreatment is the major reason behind underreporting. All victims often interact with the health care system for routine or emergency care. In several research works, non-accidental fractures are the second most common injury in maltreated children and it is represented up to one-third of cases.

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Background: Population of South Sinai has suffered from negligence for many years. Solving educational problems of this population is the main concern nowadays.

Aim: To assess academic achievement in primary school children in South Sinai in relation to intelligence and psychosocial profile.

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Background: Cerebellar atrophy and developmental delay are commonly associated features in large numbers of genetic diseases that frequently also include epilepsy. These defects are highly heterogeneous on both the genetic and clinical levels. Patients with these signs also typically present with non-specific neuroimaging results that can help prioritize further investigation but don't suggest a specific molecular diagnosis.

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Objective: To assess the level of 25-hydroxyvitamin D status among a sample of Egyptian schoolchildren and to evaluate predictors of deficiency and insufficiency.

Subjects And Methods: A cross-sectional study comprising 200 prepubescent schoolchildren aged from 9 to 11 years was performed. A questionnaire including frequency of midday sun exposure, milk intake, physical activity, and level of maternal education was taken.

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Background: Diabetic nephropathy (DN) is the leading cause of end-stage renal disease. The aim of the current study is to investigate the possible beneficial effects of Hyphaene thebaica in DN.

Materials And Methods: For this, 50 male albino rats were divided into five groups: group I - represented the control group; group II - received Hyp-haene thebaica extracts of 150 mg/kg BW by oral gavage for 6 weeks; group III - received single intraperitoneal injections of streptozotocin (50 mg/kg BW) to induce type-2 diabetes mellitus; group IV (protective) - diabetic rats recei-ved Hyphaene thebaica extract (150 mg/kg BW) orally for 6 weeks; group V (curative) - received Hyphaene thebaica extract (150 mg/kg BW) orally after the diagnosis of DN.

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Hereditary spastic paraplegias (HSPs) are neurodegenerative motor neuron diseases characterized by progressive age-dependent loss of corticospinal motor tract function. Although the genetic basis is partly understood, only a fraction of cases can receive a genetic diagnosis, and a global view of HSP is lacking. By using whole-exome sequencing in combination with network analysis, we identified 18 previously unknown putative HSP genes and validated nearly all of these genes functionally or genetically.

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Background: Chronic inflammation was found to play an important role in the development of cardiovascular risk factors. Homocysteine (Hcy) and fibrinogen have been identified as a major independent risk factor for cardiovascular disease. Lichen planus is assumed to be closely related to dyslipidaemia.

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The aim of this work is to study the behavior of completely biodegradable starch-based composites containing date palm fibers in the range from 20 to 80 wt%. Hybrid composites containing date palm and flax fibers, 25 wt% each, were also examined. The composites were preheated and then hot pressed at 5 MPa and 160°C for 30 min.

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The objective of this study to evaluate heme oxygenase (COHb), leptin and coenzyme Q10 (CoQ10) in pre-eclamptic women. Also Zinc, copper, Iron, total iron binding capacity, Ferritin and uric acid were assessed. 120 female subjects were included in this study.

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Vicine is hydrolyzed by microflora to highly reactive free radical generating compound divicine which causes mortality and other adverse effects. This study in the rats established the effect of a broad spectrum and poorly absorbed antibiotic, neomycin sulfate on the toxicity of vicine. The results showed extremely decrease in mortality rate in the group pretreated with neomycin.

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