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Botulinum toxin augmented bilateral lateral rectus recession versus three muscles surgery in large-angle intermittent exotropia

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International Journal of Ophthalmology(English edition) 2022年第10期15卷 1665-1670页

作者： Hala Kamal mattout Sameh mosaad Fouda Wael m El-Haig Department of Ophthalmology Faculty of MedicineZagazig UniversityZagazig 44519Egypt

AIm: To report the surgical outcomes of correcting large angle intermittent exotropia in adult patients by bilateral lateral rectus muscle recession with intraoperative use of botulinum toxin and to compare the results with those of bilateral lateral rectus muscle recession and unilateral medial rectus resection. mETHODS: The medical records of patients who underwent surgical correction of large angle intermittent exotropia [exotropia >50 prism dioptre(PD)] were retrospectively reviewed. Two groups of patients were identified;Group Ⅰ(21 patients) had bilateral lateral recti recession augmented with intraoperative botulinum toxin A(BTA) injection into the recessed muscles and group Ⅱ(30 patients) were treated by bilateral lateral recti recession with unilateral medial rectus muscle resection. Preoperative data were extracted for age, gender, refraction, type of exotropia, angle of stereopsis and angle of deviation. The main outcome measures were the postoperative angle of deviation and stereoacuity angle by Titmus test measured at the end of one year of postoperative follow up. RESULTS: By the end of the first postoperative year, 10 patients in group Ⅰ(47.6%) and 20 patients in group Ⅱ(66.7%) achieved esotropia/esophoria mproved stereopsis;this difference in the sensory outcome was not statistically significant(P=0.8). In the BTA augmented surgery group, good stereoacuity and smaller preoperative angle of deviation were associated with significantly higher surgical success rate(P=0.004, 0.01 respectively). CONCLUSION: BTA augmented bilateral lateral recti recession is associated with higher rate of undercorrection as compared to bilateral lateral recti recession with unilater

关键词： botulinum toxin intermittent exotropia large angle deviation augmented surgery

Structural, Theoretical and Biological Studies of (Z)-3-Amino-N-(3-Amino Pyrazine-2-Carbonyl) Pyrazine-2-Carbohydrazonic Acid (APA;L) and Its Cu2+, Co2+, Pt4+and Pd2+Chelates

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Open Journal of Inorganic Chemistry 2021年第4期10卷 145-175页

作者： mosaad R. mlahi mohsen m. mostafa Faculty of Science Department of Chemistry Amran University Amran Yemen Faculty of Science Department of Chemistry Mansoura University Mansoura Egypt

New chelates derived from the novel ligand, (Z)-3-amino-N-(3-amino pyrazine-2-carbonyl)pyrazine-2-carbohydrazonic acid (APA, L), with Cu2+, Co2+, Pt4+ and Pd2+ salts were investigated. The results suggest that APA acts as mononegative tridentate in the case of Cu2+, binegative tetradentate in the case of Co2+ and as mononegative bidentate towards Pt4+ and Pd2+ chelates. The results of the corrected μeff. and spectral suggest the structures of the isolated chelates. The results of the corrected μeff. and spectral suggest the geometries of the isolated chelates. molecular modeling is deduced and chemical reactivity, energy components for chelates and also mEP for APA is illustrated. In Vitro, the SOD and radical scavengers like activity of the synthesized compounds Hep G2 liver cancer cells and cytotoxic activity were checked. metal chelates show potent anti-oxidative activity. The results of cytotoxic activity assay against hepatocellular carcinoma cell line Hep G2 confirmed that Pt4+ complex has the highest value, while APA, Cu2+, Co2+ and Pd2+ chelates have no significant cytotoxic activity.

关键词： Aminopyrazine Density Function Theory Calculations Antioxidant and Cytotoxic Activity Biological Studies

Obesity phenotype in relation to gene polymorphism among samples of Egyptian children and their mothers

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Genes & Diseases 2018年第2期5卷 150-157页

作者： Nayera E.Hassan Sahar A.El-masry Waheba Zarouk Rokia A.El Banna Rehab m.mosaad muhammad Al-Tohamy Abeer Ramadan Salamah Biological Anthropology Department Medical Research DivisionNational Research CentreGizaEgypt molecular Genetics and Enzymology Department Human Genetics and Genomic Research DivisionNational Research CentreGizaEgypt

Obesity is complex heterogeneous disease controlled by genes,environmental factors,and their *** factors account for 40e90%of the body mass index *** mass index(BmI)of children correlates more closely with maternal than paternal ***,this studu was aimed to investigate the role of leptin receptor LEPR Gln223Arg,the uncoupling protein 2(UCP2 G 866 A)and insulin receptor gene(INSR exon 17)polymorphisms in the pathogenesis of obesity.A cross-sectional study executed on 130 children and their obese mothers;classified into 2 groups according to their *** 2 groups were evaluated regarding the *** fragment length analysis for LEPR Gln223Arg,UCP2-866 G/A and INSR exon 17 polymorphisms were *** was reported that increased risk of obesity was found in LEPR AG t AA genotype and the A *** statistical difference was detected only in female *** UCP2,the AG followed by the GG genotype was the most frequent in all groups and the G allele was the mostly present in obese mothers and obese male children but with no statistical *** was difference in the INSR genotype and alleles between groups,but this difference was not statistically *** study concluded that the LEPR Gln223Arg,UCP2 G 866 A and INSR exon 17 polymorphisms are related to obesity in Egyptian *** researches on larger population are recommended to ascertain the implications of LEPR,UCP2 and INSR polymorphisms in obesity.

关键词： Egyptian Gene polymorphism Insulin receptor(INSR) Leptin receptor(LEPR) Obesity Uncoupling protein 2(UCP2) Phenotype

Nanomaterials in Biomedicine

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Soft Nanoscience Letters 2015年第3期5卷 53-54页

作者： mosaad A. Abdel-Wahhab Francisco márquez Food Toxicology & Contaminants Department National Research Center Dokki Cairo Egypt Nanomaterials Research Group-NRG School of Natural Sciences and Technology University of Turabo Gurabo Puerto Rico USA

Nowadays, nanomaterials have become an emerging field that has shown great promise in the development of novel diagnostic, imaging and therapeutic agents for a variety of diseases, including cancer, due to their nanoscale size effects and increased surface area. In comparison to their larger counterparts, nanomaterials have unique physicochemical and biological properties including size, shape, chemical composition, surface structure and charge, aggregation and agglomeration, and solubility which can affect their interactions with biomolecules and cells. Nanoparticles (NPs) with size-tunable light emission have demonstrated an impressive potential as high-efficiency delivery transporters for biomolecules into cells, being used to produce exceptional images of tumor sites. moreover, NPs delivery system has been widely applied in pharmaceutical field to enhance absorption of bioactive compounds since they can interact with several phytochemicals by hydrogen bonds and hydrophobic interactions to encapsulate these phytochemicals in NPs and thus enhance aqueous solubility of the chemicals. moreover, NPs also can prevent against oxidation/degradation of the phytochemicals encapsulated in the gastrointestinal tract and can be taken directly up by epithelial cells in the small intestine resulting in the increase of absorption and bioavailability of phytochemicals. In general, there are two specific fields of utilization of intrinsically active NPs as pharmacologic agents including oxidative-related pathologies and cancer. On the other hand, Redox active NPs have been shown to ameliorate many clinically relevant pathological disorders that implicate oxidative stress, reducing the oxidative burden and alleviating many important symptoms. Such NPs act either in a catalytic way resembling the action of antioxidant enzymes such as catalase and superoxide dismutase, or as activating surfaces to facilitate reactions between the aqueous environment and the reactive oxygen species p

关键词： Nanomaterials Biomedicine

Effects of natural compounds in treatment and prevention ofhepatotoxicity and hepatocellular carcinoma

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Hepatoma Research 2015年第1期1卷 111-118页

作者： mohamed A.Hamzawy Ezzeldein S.m.El-Denshary mosaad A.Abdel-Wahhab Department of Pharmacology and Toxicology College of PharmacyMisr University for Science and Technology6th of October City 15525Egypt Department of Pharmacology and Toxicology Faculty of PharmacyCairo UniversityCairo 11562Egypt Department of Food Toxicology and Contaminants National Research CentreDokkiCairo 12622Egypt

Liver diseases are most common disorders in the world and characterized by rapid changes from steatosis to chronic hepatitis,fi brosis,cirrhosis,and hepatocellular carcinoma(HCC).Natural products that attained great attention is to be used in the prevention and treatment of multiple diseases in *** researches have been reported numerous natural and phytochemical compounds that may counteract or prevent the hepatic injury and primary liver *** conservative treatment of liver toxicity and HCC may face awkward challenges in chemotherapy such as therapeutic failure or drug ***,there is an actual need for safe and effective therapeutic and preventive modalities for liver *** present review aims to focus on the potential protective and therapeutic effects of natural compounds in the prevention and treatment of hepatotoxicity and *** also demonstrates the mechanism of the natural products in enzymatic regulation of antioxidants and its role in apoptosis and proliferation of cancerous lesions of ***,it highlights the promising role of natural bioactive compounds and provides the rational for further transitional researches,and emphasize on the scientifi c validation of natural compounds for therapeutic portfolio for clinical use in liver diseases.

关键词： Antioxidant hepatocellular carcinoma hepatotoxicity liver natural compounds

The Value of Speckle Tracking Strain Imaging at Recovery Period of Dobutamine Stress Echocardiography

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World Journal of Cardiovascular Diseases 2019年第3期9卷 223-235页

作者： mosaad m. Abushabana Neveen I. Samy mahmoud A. Soliman Walaa Fareed El mahalla General Hospital MOH El-Mahalla Egypt Cardiovascular Disease Department Faculty of Medicine Menoufia University Shebeen El-Kom Egypt

Background: Dobutamine stress echocardiography (DSE) is a well-established method for detecting myocardial ischemia. The classic echocardiographic findings of ischemia are new or worsening abnormalities of radial wall thickening. However, interpretation of these findings is subjective and dependent on experience. Speckle tracking strain imaging (STI) has been introduced as a novel method to overcome these limitations. Objective: The aim of the study is to evaluate the value of speckle tracking imaging (STI) by estimating the mean global longitudinal systolic (GLS) and the mean global circumferential systolic (GCS) strain imaging at recovery period of dobutamine stress echocardiography for prediction of significant coronary artery disease (CAD) in patients with chest discomfort. methods: Fifty three patients presented for evaluation of chest discomfort underwent dobutamine stress echocardiography and coronary angiography at Cardiology Department,menoufia University Hospital. The mean global left ventricular longitudinal systolic strain (GLS) at apical views—3 chambers, 4 chambers & 2 chambers apical views and global left ventricular circumferential systolic strain (GCS) at short axis view at level of papillary muscle were measured at rest and during recovery period of dobutamine stress echocardiography using automated functional imaging (AFI). Coronary angiography was done for all patients. Significant coronary artery lesion was defined as having a ≥ 70% diameter stenosis on coronary angiography. Patients were divided into two groups based on the presence or absence of significant coronary artery lesion into CAD positive (+ve) group vs. CAD negative (-ve) group. Results: In both groups,there were no statistically significant differences in the clinical characteristics and baseline conventional transthoracic echocardiography. GLS and GSC at recovery were lower in the CAD (+ve) group than in the CAD (-ve) group (-16.69% ± 1.10% vs -19.05% ± 1.41% p ). GLS and GCS durin

关键词： Coronary Artery Disease Dobutamine Stress Echocardiography Speckle Tracking Imaging Coronary Angiography

Rapid immunodiagnostic assays for mycobacterium Tuberculosis infection

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Health 2010年第3期2卷 171-176页

作者： Roba m. Talaat Gamal S. Radwan Abdelaziz A. mosaad Saleh A. Saleh Kalied Bassiouny ministry of Health minufiya University

Purpose: There is a need for a continued effort to develop rapid immunodiagnostic assays for tuberculosis (TB) infection with greater sensitivity and specificity that can be used in the field and in the laboratory and that can be formatted for use with multiple species. This would help to obtain definitive early diagnosis of TB. The present study was developed to determine the role of using early secreted antigenic target-6 (ESAT-6) in immunodiagnosis of mycobacterium tuberculosis. methods: Serum samples were obtained from TB infected patients and normal healthy controls. Two rapid immunodiagnostic assays (Enzyme-linked immunosorbent assay (ELISA) and Immunoblotting) were performed. Results: The sensitivity of immunoblotting assay was 100%;however, ESAT-6 antigen was not able to discriminate between patients and normal controls. Application of direct ELISA using ESAT-6 antigen yielded 97.6% sensitivity and 75% specificity for the diagnosis of TB infection. Conclusion: In conclusion, the detection of antibodies against ESAT-6 antigen in the sera of TB patients by direct ELISA could be used as a preliminary assay for diagnosis of human m. tuberculosis infection. A combination of the ELISA with either radiological or microscopic examination is required to overcome the low specificity of the assay for negative results.

关键词： Tuberculosis Diagnosis ESAT-6 ELISA Immunoblotting

Design, Synthesis and Cancer Cell Line Activities of Pyrazolo[3,4-b]pyridine Derivatives

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Open Journal of medicinal Chemistry 2012年第3期2卷 78-88页

作者： mosaad Sayed mohamed Yara Essam El-Deen Awad Salwa m. El-Hallouty moustafa El-Araby Pharmaceutical Organic Chemistry Department Faculty of Pharmacy Helwan University Cairo Egypt Pharmacognosy Department National Research Centre Giza Egypt

Starting from 4,6-dimethyl-2-oxo-(1H)-3-pyridinecarbonitrile 1 and 3-aminopyrazolopyridine 4, a series of cyanopyri- dine derivatives 3a-i, Schiff bases 5a-f, urea and thiourea derivatives 6a-b, amide derivatives 7a-h, pyridopyra- zolopy-rimidine 8a-b and pyridopyrazolotriazine 10a-b were synthesized. Activities of eleven representative compounds were evaluated against A-549 (lung), HEPG2 (liver) and HCT-116 (colon) cancer cell lines. The findings revealed that some of the synthesized compounds showed remarkable anticancer activities, especially 8b which displayed the highest activity among the tested compounds with IC50 equal to 2.9, 2.6 and 2.3 μmol. In addition to synthesis and biological activities, we present discussion about the rationale of the design and activity of the potent compound 8b using struc- ture-based modeling tools.

关键词： Pyridine Pyrazolopyridine Anticancer Activity CDK Inhibitors Kinase Inhibitor

Electrical Properties of BaTiO3 Doped With Lanthana and Niobia

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Electrical Properties of BaTiO3 Doped With Lanthana and Niob...