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Hassanien A, Matar T, Mabied A, Ramadan A, Hashem H. Crystallographic X-ray Diffraction Study on Thermal Phase Transformation of Barium Titanate. Egypt J Chem 2023. [DOI: 10.21608/ejchem.2022.160582.6915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Kholoussi S, Ramadan A, Kholoussi N, Ashaat EA, Fayez AG, Raouf HA, Helwa I, Esmaiel NN, Ghorab R, Abo-Shanab AM. Immunological and molecular study in children with combined immunodeficiency. Eur Ann Allergy Clin Immunol 2023. [PMID: 36786340 DOI: 10.23822/eurannaci.1764-1489.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Summary Background. Severe combined immunodeficiency (SCID) is a form of immunodeficiencies (PID), caused by molecular defects. These defects can restrict the development and function of lymphocytes. Early diagnosis and treatment of SCID can lead to disease-free survival. Objective. This study aims to investigate some of the possible underlying genetic defects in a group of Egyptian infants and children with clinical and immunological profiles suggestive of SCID. Methods. This study included eighty patients who showed clinical warning signs of immunodeficiency. Subjects were thoroughly examined clinically. Laboratory evaluation included immunoglobulins serum levels and flow cytometric assessment of immune cells. This testing showed an altered immune profile in thirty patients. They had decreased T and/or B lymphocytes or natural killer cells. DNA extraction was done for those cases. The coding regions of the RAG1 gene and RAG2 gene was investigated for hot spot mutations by sequencing technique guided by the patient clinical evaluation, inheritance pattern, immunophenotyping by flow cytometric analysis of lymphocyte subsets, and serum immunoglobulins level detection. Results. Results showed novel and previously reported variants (mutation, polymorphism), they were found in 18 cases which include variants in the RAG1 gene (E880K, A960A, H249R, S913R, K820R, V782G), and variants in the RAG2 gene (P501T, L514M, rs10836573, cDNA.2129A>T). Conclusions. To evaluate SCID patients completely; mutation gene analysis is highly required and recommended.
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Affiliation(s)
- S Kholoussi
- Department of Immunogenetics, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - A Ramadan
- Department of Molecular Genetics and Enzymology, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - N Kholoussi
- Department of Immunogenetics, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - E A Ashaat
- Department of Clinical Genetics, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - A G Fayez
- Department of Molecular Genetics and Enzymology, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - H A Raouf
- Department of Immunogenetics, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - I Helwa
- Department of Immunogenetics, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - N N Esmaiel
- Department of Molecular Genetics and Enzymology, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - R Ghorab
- Department of Immunogenetics, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
| | - A M Abo-Shanab
- Department of Immunogenetics, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt
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Tadros E, Salman M, Ramadan A, Daifallah N. Community sadness: Clinical recommendations for working with grieving Arab American families. Int J Soc Psychiatry 2022; 69:602-612. [PMID: 36217776 DOI: 10.1177/00207640221124764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Grief is a universal emotion, both layered and multidimensional. Grief in Arab cultures center around three ideals: culture, family, and religion. This paper examines the multiple different factors that influence Arabs during their grief, broken down into how different religions process and view death, along with the impact of Westernized ideals and other relationships. We explore physiological responses of grief, gender differences in expressing emotions, self-care practice, and utilizing religion as a strength. The rules and traditions surrounding grief and loss in Arab communities need to be acknowledged by clinicians and incorporated into their practice. Recommendations and future directions for clinicians to support Arab grief within the three lenses of culture, family, and religion.
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Affiliation(s)
- Eman Tadros
- Governors State University, University Park, IL, USA
| | - Marram Salman
- Governors State University, University Park, IL, USA
| | - Abrea Ramadan
- Governors State University, University Park, IL, USA
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Tadros E, Ramadan A, Salman M. The Path We Face: Clinical Implications for Destigmatizing Therapy for Arab American Couples. Journal of Couple & Relationship Therapy 2022. [DOI: 10.1080/15332691.2022.2086955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Eman Tadros
- Division of Psychology and Counseling, Governors State University, University Park, Illinois, USA
| | - Abrea Ramadan
- Division of Psychology and Counseling, Governors State University, University Park, Illinois, USA
| | - Marram Salman
- Division of Psychology and Counseling, Governors State University, University Park, Illinois, USA
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El-Fadaly AA, Afifi NA, El-Eraky W, Salama A, Abdelhameed MF, El-Rahman SSA, Ramadan A. Fisetin alleviates thioacetamide-induced hepatic fibrosis in rats by inhibiting Wnt/β-catenin signaling pathway. Immunopharmacol Immunotoxicol 2022; 44:355-366. [PMID: 35255766 DOI: 10.1080/08923973.2022.2047198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Liver fibrosis is a chronic wound-healing response to liver injury of various origins and represents a major health problem. OBJECTIVE The current study endeavored to investigate the repressing effect of fisetin on hepatic fibrosis induced by thioacetamide (TAA) in rats. MATERIALS AND METHODS Rats were injected with TAA (200 mg/kg) intraperitoneally twice per week for 6 weeks to induce liver fibrosis. Fisetin (50 and 100 mg/kg/day) or silymarin (50 mg/kg/day) were given orally on a daily basis along with TAA. Liver function parameters, oxidative stress, inflammatory and fibrogenic biomarkers as well as wnt3a, β-catenin, glycogen synthase kinase 3 (GSK-3β) and cyclin D1 were estimated. Histoapthological and immunohistochemical examinations were performed. RESULTS Fisetin restored normal liver functions, increased reduced glutathione (GSH) level and decreased malondialdehyde (MDA), as well as inflammatory biomarkers including; tumor necrosis factor-alpha (TNF-α) and interleukin 6 (IL-6). Additionally, it lessened transforming growth factor β1 (TGF-β1), collagen I and tissue inhibitor of metalloproteinase-1 (TIMP-1) levels as well as elevated matrix metalloproteinase-9 (MMP-9) hepatic content. Furthermore, fisetin significantly suppressed wnt3a gene expression associated with decreased β-catenin and increased GSK-3β levels. Moreover, fisetin decreased the progress of histologic hepatic fibroplasia and diminished hepatic expression of α-SMA and cyclin D1. CONCLUSION Fisetin curbed liver fibrosis and exhibited superior activity over silymarin through inhibition of hepatic stellate cells (HSCs) activation and proliferation via suppressing the Wnt/β-catenin pathway, modulating MMP-9 and TIMP-1, and inhibiting multiple profibrogenic factors, besides its antioxidant and anti-inflammatory effects. Therefore, fisetin is a promising therapeutic candidate for hepatic fibrosis.
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Affiliation(s)
| | - Nehal A Afifi
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Wafaa El-Eraky
- Department of Pharmacology, National Research Centre, Cairo, Egypt
| | - Abeer Salama
- Department of Pharmacology, National Research Centre, Cairo, Egypt
| | | | - Sahar S Abd El-Rahman
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - A Ramadan
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Galante J, Adeleke S, Wong M, Choy A, Lees K, Edwards A, Raman R, Thomas C, Taylor H, Pang J, Ramadan A, Bianchini D, Clarke A, Naji M, Ellul G, Brulinski P. Use of Novel Imaging for Patient Selection for Stereotactic Ablative Radiotherapy (SABR) in Oligometastatic Prostate Cancer (PCa): Does the PET Tracer Make a Difference? Clin Oncol (R Coll Radiol) 2022. [DOI: 10.1016/j.clon.2021.11.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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El-Gendy ZA, Ramadan A, El-Batran SA, Ahmed RF, El-Marasy SA, Abd El-Rahman SS, Youssef S. Carvacrol hinders the progression of hepatic fibrosis via targeting autotaxin and thioredoxin in thioacetamide-induced liver fibrosis in rat. Hum Exp Toxicol 2021; 40:2188-2201. [PMID: 34155936 DOI: 10.1177/09603271211026729] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Fibrosis is a common outcome of nearly all chronic diseases of liver that results in changes of its functions which requires medical attention. The current research aims to investigate the potential anti-fibrotic efficacy of Carvacrol against thioacetamide (TAA)-induced liver fibrosis in male rats using Ursodeoxycholic acid (UDCA) as a reference anti-fibrotic product. Carvacrol (25 and 50 mg/kg) markedly declined TAA-increased serum liver enzymes; alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and gamma-glutamyl transferase (GGT) as well as total bilirubin (TB) and direct bilirubin (DB) levels as well as increased levels of total protein (TP) and albumin. Carvacrol significantly reduced glutathione depletion (GSH), Nitric oxide (NOX) and malondialdehyde (MDA) accumulation in liver tissue. Additionally, its anti-oxidant effect brightened up via affecting markers of stress found in the cell as nuclear factor erythroid 2-related factor 2 (Nrf-2) where it still had high content and decreased Thioredoxin (Trx) level. The anti-inflammatory effect of Carvacrol was confirmed by decreasing nuclear factor kappa B (NF-κB), interleukin-1beta (IL-1β) and inducible nitric oxide synthase (iNOS) contents. Carvacrol showed anti-fibrotic effect clarified by turning down fibrosis-related markers; TGF-β1, matrix metalloproteinase-3 and 9 (MMP-3 and 9) and Autotaxin (ATX) contents. Furthermore, it decreased alpha smooth muscle actin (α-SMA) and caspase-3 immune-expression. The overall outcome of aforementioned markers results showed that Carvacrol suppresses the progression of liver fibrosis via its anti-oxidant, anti-inflammatory, anti-apoptotic effect and its ability in lowering Thioredoxin and Autotaxin; hence it can be categorized as a hepatoprotective natural substance.
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Affiliation(s)
- Z A El-Gendy
- Department of Pharmacology, 68787National Research Centre, Dokki, Giza, Egypt
| | - A Ramadan
- Department of Pharmacology, Faculty of Veterinary Medicine, 63526Cairo University, Cairo, Egypt
| | - S A El-Batran
- Department of Pharmacology, 68787National Research Centre, Dokki, Giza, Egypt
| | - R F Ahmed
- Department of Pharmacology, 68787National Research Centre, Dokki, Giza, Egypt
| | - S A El-Marasy
- Department of Pharmacology, 68787National Research Centre, Dokki, Giza, Egypt
| | - S S Abd El-Rahman
- Department of Pathology, Faculty of Veterinary Medicine, 63526Cairo University, Cairo, Egypt
| | - Sah Youssef
- Department of Pharmacology, Faculty of Veterinary Medicine, 63526Cairo University, Cairo, Egypt
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Khadre A, Raif EL, Junaid S, Goudouri OM, Refaat W, Ramadan A, Boccaccini AR, El-Gendy R. A bilayered tissue engineered in vitro model simulating the tooth periodontium. Eur Cell Mater 2021; 42:232-245. [PMID: 34632563 DOI: 10.22203/ecm.v042a17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Due to the complexity of the structure of the tooth periodontium, regeneration of the full tooth attachment is not a trivial task. There is also a gap in models that can represent human tooth attachment in vitro and in vivo. The aim of this study was to develop a bilayered in vitro construct that simulated the tooth periodontal ligament and attached alveolar bone, for the purpose of tissue regeneration and investigation of physiological and orthodontic loading. Two types of materials were used to develop this construct: sol-gel 60S10Mg derived scaffold, representing the hard tissue component of the periodontium, and commercially available Geistlich Bio-Gide® collagen membrane, representing the soft tissue component of the tooth attachment. Each scaffold was dynamically seeded with human periodontal ligament cells (HPDLCs). Scaffolds were either cultured separately, or combined in a bilayered construct, for 2 weeks. Characterisation of the individual scaffolds and the bilayered constructs included biological characterisation (cell viability, scanning electron microscopy to confirm cell attachment, gene expression of periodontium regeneration markers), and mechanical characterisation of scaffolds and constructs. HPDLCs enjoyed a biocompatible 3-dimensional environment within the bilayered construct components. There was no drop in cellular gene expression in the bilayered construct, compared to the separate scaffolds.
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Affiliation(s)
| | | | | | | | | | | | | | - R El-Gendy
- Department of Oral Biology, Leeds School of Dentistry, University of Leeds,
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El-Gendy ZA, El-Marasy SA, Ahmed RF, El-Batran SA, Abd El-Rahman SS, Ramadan A, Youssef SAH. Hepatoprotective effect of Saccharomyces Cervisciae Cell Wall Extract against thioacetamide-induced liver fibrosis in rats. Heliyon 2021; 7:e07159. [PMID: 34159266 PMCID: PMC8203708 DOI: 10.1016/j.heliyon.2021.e07159] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/04/2020] [Accepted: 05/25/2021] [Indexed: 12/28/2022] Open
Abstract
Fibrosis represents a common outcome of almost all chronic liver diseases and leads to an impairment of liver function that requires medical intervention. The current study aimed to evaluate the potential anti-fibrotic effect of Saccharomyces cervisciae cell wall extract (SCCWE) against thioacetamide (TAA)-induced liver fibrosis in rats (200mg/kg b.w. i.p. twice weekly for 6 weeks) using Ursodeoxycholic acid (UDCA) as a reference anti-fibrotic product. SCCWE at two doses (50 and 100 mg/kg) significantly ameliorated the rise in serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), gamma glutamide transferase (GGT) activities, total bilirubin and direct bilirubin, increased total protein and albumin. SCCWE significantly reduced glutathione depletion (GSH), Nitric oxide (NOx) and malondialdehyde (MDA), thioredoxin (Trx) contents and elevated nuclear factor erythroid 2–related factor 2 (Nrf-2) content. Its anti-inflammatory effects were confirmed by observing a decrease in nuclear factor-κB (NF- κβ), interleukin-1b (IL-1β) and inducible nitric oxide synthase (iNOS) content. The anti-fibrotic effects of SCCWE were explored by assessing fibrosis related markers as it significantly reduced transform growth factor-β (TGF-β) and autotaxin (ATX) contents. Administration of SCCWE significantly decreased matrix metalloproteinase-3 and 9 (MMP-3 and -9). Furthermore, it also decreased alpha smooth muscle actin (α-SMA) and caspase-3 as assessed immunohistochemically those results were similar to that of the standard drug UDCA. This study shows that SCCWE protects against TAA-induced liver fibrosis in rats, through attenuating oxidative stress, and inflammation, ameliorating MMPs, combating apoptosis and thereby fibrotic biomarkers in addition to improving histopathological changes.
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Affiliation(s)
| | | | - Rania F Ahmed
- Department of Pharmacology, National Research Centre, Giza, Egypt
| | | | - Sahar S Abd El-Rahman
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - A Ramadan
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - S A H Youssef
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Nawar M, Hameed HA, Ramadan A, Mohamed M, El-Maksoud RA. Heterogeneous comparative effects of casing grooves on a submersible axial turbine performance for wave energy conversion. Ocean Engineering 2021; 225:108812. [DOI: 10.1016/j.oceaneng.2021.108812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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11
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El-Gendy ZA, El-Batran SA, Youssef S, Ramadan A, Hotaby WE, Bakeer RM, Ahmed RF. Hepatoprotective effect of Omega-3 PUFAs against acute paracetamol-induced hepatic injury confirmed by FTIR. Hum Exp Toxicol 2021; 40:526-537. [PMID: 32909844 DOI: 10.1177/0960327120954522] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Acute paracetamol over dose-induced hepatotoxicity is considered an important medical hazard especially among women. Omega-3 long-chain polyunsaturated fatty acids (Omega-3 PUFAs) daily doses are nowadays recommended for their antioxidant and anti-inflammatory potentials. Fourier transform infrared (FTIR) spectroscopy is considered a reliable method in analyzing cellular alterations and is now efficiently used to diagnose several diseases and the efficacy of drugs even in the early stages. The aim of our study was to evaluate the hepatoprotective effect of Omega-3 PUFAs against paracetamol-induced hepatotoxicity in rats confirmed through measuring protein alterations in hepatocytes by FTIR. Rats were pretreated with Omega-3 PUFAs (50 and 100 mg/kg) for 21 days prior to oral ingestion of paracetamol. FTIR results revealed that Omega-3 PUFAs (50 mg/kg) limited the toxic effects of paracetamol by restoring the hepatic amide I to amide II ratio. In addition; biochemical analyses demonstrated that serum ALT, AST, Cholesterol, LDL-cholesterol and Il-6 levels as well as hepatic TNF-α, MDA, NOx levels were decreased. Besides; serum HDL-cholesterol level and hepatic GSH level were increased. Histopathological examinations of hepatic sections validated the hepatoprotective potential. The overall effect of this dose was comparable to those of the usual recommended hepatoprotective supplement; silymarin. In conclusion; it would be recommended to use Omega-3 PUFAs in low doses on daily bases as a hepatoprotective agent.
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Affiliation(s)
- Zeinab A El-Gendy
- Department of Pharmacology, Medical Research Division, 68787National Research Centre, Dokki, Giza, Egypt
| | - Seham A El-Batran
- Department of Pharmacology, Medical Research Division, 68787National Research Centre, Dokki, Giza, Egypt
| | - Sah Youssef
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - A Ramadan
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Walid El Hotaby
- Department of Spectroscopy, Physics Division, 68787National Research Centre, Dokki, Giza, Egypt
| | - Rofanda M Bakeer
- Department of Pathology, Faculty of Medicine, Helwan University, Helwan, Egypt
- Department of Pathology, 110123October University of Modern Sciences and Arts (MSA) University, Egypt
| | - Rania F Ahmed
- Department of Pharmacology, Medical Research Division, 68787National Research Centre, Dokki, Giza, Egypt
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Ibrahim A, Ramadan A, Wahby A, Draz I, El Baroudy N, Abdel Hamid T. Evaluation of miR-196a2 expression and Annexin A1 level in children with bronchial asthmaEvaluation of miR-196a2 expression and Annexin A1 level in children. Allergol Immunopathol (Madr) 2020; 48:458-464. [PMID: 32279913 DOI: 10.1016/j.aller.2019.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/18/2019] [Accepted: 11/12/2019] [Indexed: 02/09/2023]
Abstract
BACKGROUND Annexin A1 (ANXA1) is an important anti-inflammatory mediator that may play a significant role in bronchial asthma. MiR-196a2 can target ANXA1 and therefore may play a role in the pathogenesis of asthma. AIM OF STUDY This is the first study which aimed to evaluate the expression of miR-196a2 in the serum of asthmatic children and correlate its expression with ANXA1 serum level and asthma severity. SUBJECTS AND METHODS The study included 100 asthma patients who were subdivided into three groups (mild, moderate and severe) and 50 healthy control subjects. Assessment of miR-196a2 expression and ANXA1 serum level were done using quantitative reverse transcriptase PCR (RT qPCR) and Elisa techniques, respectively. RESULTS Compared to the control group, asthmatic children showed an increased ANXA1 serum level and decreased expression of miR-196a2 (p=0.001). However, ANXA1 serum level was lower and miR-196a2 expression was higher in severe asthmatic patients compared to moderate asthmatic ones (p=0.01, 0.03). Pearson's correlation coefficient revealed no significant correlations between ANXA1 serum level and miR-196a2 expression in the patient group (p=0.9). CONCLUSIONS Altered miR-196a2 expression and serum ANXA1 concentration may play a role in the pathogenesis of asthma. In addition, ANXA1 and miR-196a2 may represent potential diagnostic biomarkers for asthma and future targets for therapy.
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Afifi NA, Ramadan A, Erian EY, Sedik AA, Amin MM, Hassan A, Saleh DO. Synergistic effect of aminoguanidine and l-carnosine against thioacetamide-induced hepatic encephalopathy in rats: behavioral, biochemical, and ultrastructural evidence. Can J Physiol Pharmacol 2020; 99:332-347. [PMID: 32721224 DOI: 10.1139/cjpp-2020-0212] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Hepatic encephalopathy depicts the cluster of neurological alterations that occur during acute or chronic hepatic injury. Hyperammonemia, inflammatory injury, and oxidative stress are the main predisposing factors for the direct and indirect changes in cerebral metabolism causing encephalopathy. The aim of this study was to evaluate the possible synergistic effect between aminoguanidine (AG; 100 mg/kg, p.o.) and l-carnosine (CAR; 200 mg/kg, p.o.) on hepatic encephalopathy that was induced by thioacetamide (TAA; 100 mg/kg, i.p.) administered three times weekly for six weeks. Behavioral changes, biochemical parameters, histopathological analysis, and immunohistochemical and ultrastructural studies were conducted 24 h after the last treatment. Combining AG with CAR improved TAA-induced locomotor impairment and motor incoordination evidenced by reduced locomotor activity and decline in motor skill performance, as well as ameliorated cognitive deficits. Moreover, both drugs restored the levels of serum hepatic enzymes and serum and brain levels of ammonia. In addition, the combination significantly modulated hepatic and brain oxidative stress biomarkers, inflammatory cytokines, and cleaved caspase-3 expression. Furthermore, they succeeded in activating nuclear erythroid 2-related factor 2 (Nrf2) expression and heme oxygenase-1 (HO-1) activity and ameliorating markers of hepatic encephalopathy, including hepatic necrosis and brain astrocyte swelling. This study shows that combining AG with CAR exerted a new intervention for hepatic and brain damage in hepatic encephalopathy due to their complementary antioxidant, anti-inflammatory effects and hypoammonemic effects via Nrf2/HO-1 activation and NO inhibition.
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Affiliation(s)
- Nehal A Afifi
- Pharmacology Department, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | - A Ramadan
- Pharmacology Department, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | - Emad Y Erian
- Pharmacology Department, Medical Division, National Research Centre, Cairo, Egypt
| | - Ahmed A Sedik
- Pharmacology Department, Medical Division, National Research Centre, Cairo, Egypt
| | - Mohamed M Amin
- Pharmacology Department, Medical Division, National Research Centre, Cairo, Egypt
| | - Azza Hassan
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | - Dalia O Saleh
- Pharmacology Department, Medical Division, National Research Centre, Cairo, Egypt
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14
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Hosny M, Hassan M, El Guindy A, El Faramawy A, Abd El Hamid M, Essam A, El Mozy W, Romeih S, Ramadan A, Shaaban M, Yacoub M. P5604The effect of rheolytic thrombectomy on myocardial salvage index in patients with ST segment elevation myocardial infarction and large thrombus burden: a magnetic resonance imaging study. Eur Heart J 2018; 39. [DOI: 10.1093/eurheartj/ehy566.p5604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/02/2023] Open
Affiliation(s)
- M Hosny
- Cairo University, Kasr Al Ainy, Cardiovascular Medicine Department, Cairo, Egypt
| | - M Hassan
- Cairo University, Kasr Al Ainy, Cardiovascular Medicine Department, Cairo, Egypt
| | | | - A El Faramawy
- Cairo University, Kasr Al Ainy, Cardiovascular Medicine Department, Cairo, Egypt
| | - M Abd El Hamid
- Cairo University, Kasr Al Ainy, Cardiovascular Medicine Department, Cairo, Egypt
| | - A Essam
- Aswan Heart Center, Aswan, Egypt
| | | | - S Romeih
- Aswan Heart Center, Aswan, Egypt
| | | | | | - M Yacoub
- Aswan Heart Center, Aswan, Egypt
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15
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Ramadan A, Afifi N, Yassin NZ, Abdel-Rahman RF, Abd El-Rahman SS, Fayed HM. Mesalazine, an osteopontin inhibitor: The potential prophylactic and remedial roles in induced liver fibrosis in rats. Chem Biol Interact 2018; 289:109-118. [PMID: 29738702 DOI: 10.1016/j.cbi.2018.05.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/24/2018] [Accepted: 05/04/2018] [Indexed: 02/07/2023]
Abstract
Liver fibrosis is a major health issue leading to high morbidity and mortality. The potential anti-fibrotic activity and the effect of mesalazine on osteopontin (OPN), an extra cellular matrix (ECM) component were evaluated in TAA-induced liver fibrosis in rats. For this purpose, forty-two adult male Wistar rats were divided into six groups. All animals, except the normal control, were intraperitoneally injected with TAA (200 mg/kg) twice per week for 6 weeks. In the hepato-protective study, animals were administered mesalazine (50 and 100 mg/kg, orally) for 4 weeks before induction of liver fibrosis then concomitantly with TAA injection. In the hepato-therapeutic study, animals were administered mesalazine for 6 weeks after TAA discontinuation with the same doses. In both studies, mesalazine administration improved liver biomarkers through decreasing serum levels of AST, ALT and total bilirubin when compared to fibrotic group with significant increase in total protein and albumin levels. Mesalazine significantly decreased hepatic MDA level and counteracted the depletion of hepatic GSH content and SOD activity. Additionally, it limits the elevation of OPN and TGF-β1 concentrations and suppressed TNF-α as well as α-SMA levels in hepatic tissue homogenate. Histopathologically, mesalazine as a treatment showed a good restoration of the hepatic parenchymal cells with an obvious decreased intensity and retraction of fibrous proliferation, while as a prophylaxis it didn't achieve enough protection against the harmful effect of TAA, although it decreased the intensity of portal to portal fibrosis and pseudolobulation. Furthermore, mesalazine could suppress the expression of both α-SMA and caspase-3 in immunohistochemical sections. In conclusion, mesalazine could have a potential new indication as anti-fibrotic agent through limiting the oxidative damage and altering TNF-ɑ pathway as an anti-inflammatory drug with down-regulating TGF-β1, OPN, α-SMA and caspase-3 signaling pathways.
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Affiliation(s)
- A Ramadan
- Pharmacology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Nehal Afifi
- Pharmacology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Nemat Z Yassin
- Pharmacology Department, National Research Centre, Giza, Egypt
| | | | - Sahar S Abd El-Rahman
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Hany M Fayed
- Pharmacology Department, National Research Centre, Giza, Egypt
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Abstract
Clinical, laboratory, and pathologic findings from a case of primary extramedullary plasmacytoma of the testis and sinuses in a patient with acquired immunodeficiency syndrome (AIDS) are presented. To our knowledge this is the first case in the English literature of a primary testicular plasmacytoma in an HIV-infected patient. The findings in this report and those of others confirm the difference in the pattern of plasma cell tumor (PCT) presentation in patients infected with AIDS from those in non-infected individuals, suggesting that these tumors should be considered in the differential diagnosis of AIDS-associated malignancies.
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Affiliation(s)
- A Ramadan
- Pathology Department, Howard University Hospital, Washington, DC 20060, USA.
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17
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Shehata M, Ramadan A, Ebada M, Negida A, Abdel-Daim M. Risk of bone fracture in patients with Alzheimer’s disease: A pooled analysis of 144447 participant data. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Emadeldin D, Ramadan A, Fala S, Sadik M, Sadik F, Bahbah E, Ahmed H, Negida A. Disease modifying efficacy of memantine in Alzheimer’s disease; a pooled analysis of 13 randomized controlled trials. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Ramadan A, Zhang J, Abu Zaid M, Taylor L, O'Leary H, Kapur R, Hanenberg H, Broxmeyer HE, Kaplan MH, Paczesny S. ID: 95: IL-33/ST2 TRIGGERING OF IL-9–SECRETING T CELLS: FROM PROTEOMICS TO THERAPEUTICS. J Investig Med 2016. [DOI: 10.1136/jim-2016-000120.73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
As one of the most validated immunotherapies to date, allogeneic hematopoietic cell transplantation (allo-HCT) is a potentially curative option for high-risk hematological malignancies, particularly acute myeloid leukemia (AML). The immunotherapeutic activity of allo-HCT is known as the graft-vs-leukemia (GVL) activity. However, GVL activity is often accompanied by T-cell reactivity to allo-antigens in normal host tissues, which leads to graft-versus-host disease (GVHD), another major cause of death after HCT. Therefore, there is a great unmet need to improve the current process of allo-HCT through increasing the GVL activity and decreasing GVHD. We have shown that an elevated plasma level of soluble (s)ST2 in HCT patients is a risk factor for severe GVHD. ST2 blockade reduces sST2-producing T cells while maintaining protective membrane (m)ST2-expressing T cells such as type 2 T cells and regulatory T cells during aGVHD. A novel IL-9 producing T helper subset, Th9, expresses mST2. Furthermore, Th9 cells and IL-9 producing CD8 cytotoxic (Tc9) cells have higher antitumor activity than Th1 and Tc1 cells in melanoma models. Interestingly, we found that the addition of IL-33 during T9 differentiation (T9IL-33) increased expression of mST2 and PU.1, a transcription factor that promotes IL-9 production in both CD4 and CD8 T cells. Adoptive transfer of T9IL-33 cells with bone marrow cells in a murine model of HCT resulted in less severe GVHD compared to transfer of T9IL-33 cells generated from ST2−/− or IL-9−/− T cells. Furthermore, cytolytic molecules implicated in anti-leukemic activity (granzyme B and perforin) were upregulated in WT T9IL-33 cells while ST2−/− T9IL-33 cells did not. WT T9IL-33 cells also exhibited higher anti-leukemic activity when cultured with a retrovirally transduced MLL-AF9 leukemic cells in comparison to ST2−/− T9IL-33 in in vitro cytolytic assays. In vivo GVL experiments with MLL-AF9 AML and adoptive transfer of T9IL-33 cells resulted in increased survival compared to syngeneic mice, allo-HCT mice transferred with T1 cells, or T9 cells or T9IL-33 cells generated from ST2−/− or IL-9−/− T cells. Human T9 cells are poorly studied. Here we demonstrate that IL-33 has the same impact on human T cells through enhancing IL-9 and Granzyme B production compared to T9 cells as well as demonstrated higher in vitro anti-leukemic cytolytic activity when incubated with MOLM14, an aggressive AML tumor cell line expressing FLT3/ITD mutations. Importantly, CD8α expression was upregulated in WT T9IL-33 (both CD4 and CD8) cells in comparison to ST2−/− T9IL-33 cells, and CD8α blockade with neutralizing antibody during allogeneic specific T9IL-33 differentiation reduced cytotoxicity of both murine T9IL-33, and human T9IL-33 cells as compared to the cell blocked with isotype control, suggesting that CD8α was associated with MHC-restricted cytolytic activity in T9IL-33 cells. Altogether, our observations demonstrated that adoptive transfer of T9IL-33 cells represents a promising cellular therapy following HCT.
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Zhang J, Ramadan A, Griesenauer B, Li W, Turner M, Kapur R, Hanenberg H, Paczesny S, Liu C, Blazar B, Tawara I. ID: 91: ST2 BLOCKADE REDUCES SST2-PRODUCING T CELLS WHILE MAINTAINING PROTECTIVE MST2-EXPRESSING T CELLS DURING GRAFT-VERSUS-HOST DISEASE. J Investig Med 2016. [DOI: 10.1136/jim-2016-000120.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Allogeneic hematopoietic stem cell transplantation is an important curative therapy for hematological malignancies and other blood disorders, but graft-versus-host disease (GVHD) remains a devastating complication. We previously identified high plasma soluble suppression of tumorigenicity 2 (ST2) as a biomarker of the development of GVHD and death. ST2, also known as the interleukin (IL)-33 receptor, is one of the newest members of the IL-1 receptor family, and its only known ligand is IL-33. Due to alternative splicing, ST2 has two main isoforms: a membrane-bound form (mST2), expressed on hematopoietic cells that promote type 2 helper T (Th2) cell immune responses, and a soluble form (sST2), secreted by non-hematopoietic cells. sST2 acts as a decoy receptor for IL-33, limiting its availability to mST2-expressing cells. Thus, we hypothesized that blockade of the sST2 will free IL-33 for signaling in mST2-expressing T cells [Th2 cells and ST2+FoxP3+ regulatory T cells (Tregs)], which will attenuate GVHD.First, we found the onset of GVHD symptoms was correlated with a marked increase of plasma ST2 in multiple clinically relevant GVHD murine models, and blockade of sST2 in the peri-transplant period with a neutralizing monoclonal antibody (anti-ST2 mAb) reduced GVHD clinical and histopathological severity and mortality. We identified intestinal stromal cells and T cells as major sources of sST2 during GVHD. ST2 blockade decreased systemic interferon-γ, IL-17, and IL-23 but increased IL-10 and IL-33 plasma levels. ST2 blockade also reduced sST2 production by IL-17–producing T cells while maintaining protective mST2-expressing Th2 cells and Tregs. In addition, ST2 blockade increased the frequency of intestinal myeloid-derived suppressor cells (MDSCs) and decreased the frequency of intestinal CD103 dendritic cells (DCs). Finally, whole transcriptome analysis of T cells comparing anti-ST2 mAb-treated mice versus IgG control-treated mice showed that anti-ST2 mAb administration up-regulated gene expression of cytokines and cytolytic molecules that have been implicated in antitumoral or graft-vs-leukemia (GVL) activity, such as IL-27, IL-18, IL-9, type I interferons, and granzyme A. We therefore postulated that ST2 blockade would not affect therapeutic GVL activity. To confirm this in a clinically relevant GVL model, we developed primary retrovirally induced MLL-AF9 eGFP+ leukemic cells on the C3H.SW background. The phenotype of the leukemic cells in this model is eGFP+, CD3−, B220− and Mac-1hiGr-1hi. Our results indicated that administration of anti-ST2 mAb or ST2−/− donor T cells preserved substantial GVL activity and resulted in significantly improved leukemia-free survival.In summary, our findings identify intestinal alloreactive T cells as an important source of the decoy receptor for IL-33 that can be blocked with two doses of anti-ST2 mAb in the peri-transplant period without inhibiting the beneficial mST2 expression on Th2 cells and Tregs or the GVL activity. In addition, ST2 blockade induced expansion of tolerogenic MDSCs while inhibiting immunogenic CD103 DCs during GVHD. This study offers new perspectives on the translation of drug-targetable biomarkers for selectively and safely treating GVHD and other T cell-mediated human disorders.
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Jeon JS, Kim HT, Kim MG, Oh MS, Hong SR, Yoon MH, Cho SM, Shin HC, Shim JH, Ramadan A, Abd El-Aty AM. Simultaneous determination of water-soluble whitening ingredients and adenosine in different cosmetic formulations by high-performance liquid chromatography coupled with photodiode array detection. Int J Cosmet Sci 2015; 38:286-93. [PMID: 26564311 DOI: 10.1111/ics.12292] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 11/07/2015] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The Korean Cosmetic Act regulates the use of functional cosmetics) by the law. Four functional cosmetic groups, whitening, anti-wrinkle, UV protection and combination of whitening and anti-wrinkle, were categorized according to the Korean Cosmetic Act and Functional Cosmetics Codex. In this study, high-performance liquid chromatography (HPLC) coupled with photodiode array detection (DAD) was employed for the simultaneous detection of arbutin (and its decomposition product, hydroquinone), niacinamide, ascorbyl glucoside, ethyl ascorbyl ether and adenosine in functional cosmetic products such as creams, emulsions and lotions. METHODS Separation by HPLC-DAD was conducted using a C18 column with a gradient elution of 5 mm KH2PO4 buffer (containing 0.1% phosphoric acid) and methanol (containing 0.1% phosphoric acid). The wavelengths for the detection of arbutin, hydroquinone, niacinamide, adenosine, ascorbyl glucoside and ethyl ascorbyl ether were 283, 289, 261, 257, 238 and 245 nm, respectively. RESULTS This method exhibited good linearity (R(2) ≥ 0.999), precision (expressed as relative standard deviation (RSD) < 2%) and mean recoveries (89.42-104.89%). The results obtained by monitoring 100 market samples showed that the detected levels of the tested materials are within the acceptable authorized concentration. CONCLUSION The method developed herein is simple and can be used for market survey and quality control of functional cosmetics.
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Affiliation(s)
- J-S Jeon
- Public Health Research Division, Gyeonggi Province Institute of Health and Environment, 95, Pajang cheon-ro, Jangan-gu, Suwon-Si, 440-290, Republic of Korea
| | - H-T Kim
- Public Health Research Division, Gyeonggi Province Institute of Health and Environment, 95, Pajang cheon-ro, Jangan-gu, Suwon-Si, 440-290, Republic of Korea
| | - M-G Kim
- Public Health Research Division, Gyeonggi Province Institute of Health and Environment, 95, Pajang cheon-ro, Jangan-gu, Suwon-Si, 440-290, Republic of Korea
| | - M-S Oh
- Public Health Research Division, Gyeonggi Province Institute of Health and Environment, 95, Pajang cheon-ro, Jangan-gu, Suwon-Si, 440-290, Republic of Korea
| | - S-R Hong
- Public Health Research Division, Gyeonggi Province Institute of Health and Environment, 95, Pajang cheon-ro, Jangan-gu, Suwon-Si, 440-290, Republic of Korea
| | - M-H Yoon
- Public Health Research Division, Gyeonggi Province Institute of Health and Environment, 95, Pajang cheon-ro, Jangan-gu, Suwon-Si, 440-290, Republic of Korea
| | - S-M Cho
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Konkuk University, Nuengdong-ro, Gwangjin-gu, Seoul, 143-701, Republic of Korea
| | - H-C Shin
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Konkuk University, Nuengdong-ro, Gwangjin-gu, Seoul, 143-701, Republic of Korea
| | - J-H Shim
- Biotechnology Research Institute, College of Agriculture and Life Sciences, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju, 500-757, Republic of Korea
| | - A Ramadan
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - A M Abd El-Aty
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Konkuk University, Nuengdong-ro, Gwangjin-gu, Seoul, 143-701, Republic of Korea.,Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
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22
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Yasuo S, Kenichi Y, Ueno N, Arimoto A, Hosono M, Yoshikawa T, Toyokawa A, Kakeji Y, Tsai Y, Tsai C, Sul J, Lim M, Park J, Jang CE, Santilli O, Tripoloni D, Santilli H, Nardelli N, Greco A, Estevez M, Sakurai S, Ryu S, Cesana G, Ciccarese F, Uccelli M, Grava G, Castello G, Carrieri D, Legnani G, Olmi S, Naito M, Yamamoto H, Sawada Y, Mandai Y, Asano H, Ino H, Tsukuda K, Nagahama T, Ando M, Ami K, Arai K, Miladinovic M, Kitanovic A, Lechner M, Mayer F, Meissnitzer M, Fortsner R, Öfner D, Köhler G, Jäger T, Kumata Y, Fukushima R, Inaba T, Yaguchi Y, Horikawa M, Ogawa E, Katayama T, Kumar PS, Unal D, Caparlar C, Akkaya T, Mercan U, Kulacoglu H, Barreiro JJ, Baer IG, García LS, Cumplido PL, Florez LJG, Muñiz PF, Fujino K, Mita K, Ohta E, Takahashi K, Hashimoto M, Nagayasu K, Murabayashi R, Asakawa H, Koizumi K, Hayashi G, Ito H, Felberbauer F, Strobl S, Kristo I, Riss S, Prager G, El Komy H, El Gendi A, Nabil W, Karam M, El Kayal S, Chihara N, Suzuki H, Watanabe M, Uchida E, Chen T, Wang J, Wang H, Bouchiba N, Elbakary T, Ramadan A, Elakkad M, Berney C, Vlasov V, Babii I, Pidmurnyak O, Prystupa M, Asakage N, Molinari P, Contino E, Guzzetti L, Oggioni M, Sambuco M, Berselli M, Farassino L, Cocozza E, Crespi A, Ambrosoli A, Zhao Y. Topic: Inguinal Hernia - Unsolved problem in the daily practice. Hernia 2015; 19 Suppl 1:S293-304. [PMID: 26518826 DOI: 10.1007/bf03355374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- S Yasuo
- Department of Surgery. Social Welfare Organization Saiseikai Imperial Gift Foundation, Inc. Saiseikai Wakakusa Hospital, Yokohama, Japan
| | - Y Kenichi
- Department of Surgery. Social Welfare Organization Saiseikai Imperial Gift Foundation, Inc. Saiseikai Wakakusa Hospital, Yokohama, Japan
| | - N Ueno
- Department of General Surgery, Yodogawa Christian Hospital, Osaka, Japan
| | - A Arimoto
- Department of General Surgery, Takatsuki General Hospital, Takatsuki, Japan
| | - M Hosono
- Division of Gastrointestinal Surgery, Kobe University Hospital, Kobe, Japan
| | - T Yoshikawa
- Department of General Surgery, Takatsuki General Hospital, Takatsuki, Japan
| | - A Toyokawa
- Department of General Surgery, Yodogawa Christian Hospital, Osaka, Japan
| | - Y Kakeji
- Division of Gastrointestinal Surgery, Kobe University Hospital, Kobe, Japan
| | - Y Tsai
- Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taipei, Taiwan
| | - C Tsai
- Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - J Sul
- Chungnam National University Hospital, Daejeon, South Korea
| | - M Lim
- Chungnam National University Hospital, Daejeon, South Korea
| | - J Park
- Chungnam National University Hospital, Daejeon, South Korea
| | | | - O Santilli
- Centro De Patologia Herniaria, Buenos Aires, Argentina
| | - D Tripoloni
- Centro De Patologia Herniaria, Buenos Aires, Argentina
| | - H Santilli
- Centro De Patologia Herniaria, Buenos Aires, Argentina
| | - N Nardelli
- Centro De Patologia Herniaria, Buenos Aires, Argentina
| | - A Greco
- Centro De Patologia Herniaria, Buenos Aires, Argentina
| | - M Estevez
- Centro De Patologia Herniaria, Buenos Aires, Argentina
| | - S Sakurai
- St. Luke's International Hospital, Tokyo, Japan
| | - S Ryu
- Samsung Changwon Hospital, Changwon-si, Gyeongsangnam-do, South Korea
| | - G Cesana
- School of General Surgery, University of Milan, Milan, Italy.,General and Oncologic Surgery Department, S. Marco Hospital, Zingonia, BG, Italy
| | - F Ciccarese
- School of General Surgery, University of Milan, Milan, Italy.,General and Oncologic Surgery Department, S. Marco Hospital, Zingonia, BG, Italy
| | - M Uccelli
- School of General Surgery, University of Milan, Milan, Italy.,General and Oncologic Surgery Department, S. Marco Hospital, Zingonia, BG, Italy
| | - G Grava
- School of General Surgery, University of Milan, Milan, Italy.,General and Oncologic Surgery Department, S. Marco Hospital, Zingonia, BG, Italy
| | - G Castello
- General and Oncologic Surgery Department, S. Marco Hospital, Zingonia, BG, Italy
| | - D Carrieri
- General and Oncologic Surgery Department, S. Marco Hospital, Zingonia, BG, Italy
| | - G Legnani
- General and Oncologic Surgery Department, S. Marco Hospital, Zingonia, BG, Italy
| | - S Olmi
- School of General Surgery, University of Milan, Milan, Italy.,General and Oncologic Surgery Department, S. Marco Hospital, Zingonia, BG, Italy
| | - M Naito
- Department of Surgery, Okayama Medical Center, Okayama, Japan
| | - H Yamamoto
- Department of Surgery, Okayama Medical Center, Okayama, Japan
| | - Y Sawada
- Himeji Daiichi Hospital, Himeji, Japan
| | - Y Mandai
- Okayama University Hospital, Okayama, Japan
| | - H Asano
- Okayama University Hospital, Okayama, Japan
| | - H Ino
- Okayama University Hospital, Okayama, Japan
| | - K Tsukuda
- Okayama University Hospital, Okayama, Japan
| | - T Nagahama
- Department of Surgery, Toshima Hospital, Tokyo, Japan
| | - M Ando
- Department of Surgery, Toshima Hospital, Tokyo, Japan
| | - K Ami
- Department of Surgery, Toshima Hospital, Tokyo, Japan
| | - K Arai
- Department of Surgery, Toshima Hospital, Tokyo, Japan
| | | | - A Kitanovic
- Surgery ward, General hospital, Krusevac, Serbia
| | - M Lechner
- Department of General Surgery, Paracelsus Medical University, Salzburg, Austria
| | - F Mayer
- Department of General Surgery, Paracelsus Medical University, Salzburg, Austria
| | - M Meissnitzer
- Department of Radiology, Paracelsus Medical University, Salzburg, Austria
| | - R Fortsner
- Department of Radiology, Paracelsus Medical University, Salzburg, Austria
| | - D Öfner
- Department of General Surgery, Paracelsus Medical University, Salzburg, Austria
| | - G Köhler
- Department of General Surgery, Sisters of Charity Hospital, Linz, Austria
| | - T Jäger
- Department of General Surgery, Paracelsus Medical University, Salzburg, Austria
| | - Y Kumata
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - R Fukushima
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - T Inaba
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - Y Yaguchi
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - M Horikawa
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - E Ogawa
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - T Katayama
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - P S Kumar
- ESI-PGIMSR and Medical College, Bangalore, India
| | - D Unal
- Diskapi Teaching and Research Hospital, Ankara, Turkey
| | - C Caparlar
- Diskapi Teaching and Research Hospital, Ankara, Turkey
| | - T Akkaya
- Diskapi Teaching and Research Hospital, Ankara, Turkey
| | - U Mercan
- Diskapi Teaching and Research Hospital, Ankara, Turkey
| | - H Kulacoglu
- Diskapi Teaching and Research Hospital, Ankara, Turkey
| | | | | | | | | | | | | | - K Fujino
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - K Mita
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - E Ohta
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - K Takahashi
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - M Hashimoto
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - K Nagayasu
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - R Murabayashi
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - H Asakawa
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - K Koizumi
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - G Hayashi
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - H Ito
- Department of Surgery, New Tokyo Hospital, Matsudo, Japan
| | - F Felberbauer
- Div. of General Surgery, Dpt. of Surgery, Medical University of Vienna, Vienna, Austria
| | | | | | | | | | - H El Komy
- Faculty of medicine, Alexandria, Egypt
| | | | - W Nabil
- Faculty of medicine, Alexandria, Egypt
| | - M Karam
- Faculty of medicine, Alexandria, Egypt
| | | | - N Chihara
- Nippon Medical School, Musashikosugi Hospital, Institute of Gastroenterology, Kawasaki, Japan
| | - H Suzuki
- Nippon Medical School, Musashikosugi Hospital, Institute of Gastroenterology, Kawasaki, Japan
| | - M Watanabe
- Nippon Medical School, Musashikosugi Hospital, Institute of Gastroenterology, Kawasaki, Japan
| | - E Uchida
- Department of Surgery, Nippon Medical School, Tokyo, Japan
| | - T Chen
- Department of Biliary-pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - J Wang
- Department of Biliary-pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - H Wang
- Department of Biliary-pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - N Bouchiba
- Al Wakra Hospital, Hamad Medical Corporation, Al Wakra, Qatar
| | - T Elbakary
- Al Wakra Hospital, Hamad Medical Corporation, Al Wakra, Qatar
| | - A Ramadan
- Al Wakra Hospital, Hamad Medical Corporation, Al Wakra, Qatar
| | - M Elakkad
- Al Wakra Hospital, Hamad Medical Corporation, Al Wakra, Qatar
| | - C Berney
- Bankstown-Lidcombe Hospital, University of NSW, Sydney, Australia
| | - V Vlasov
- Khmelnitskiy regional hospital, Khmelnitskiy, Ukraine
| | | | | | | | - N Asakage
- Department of Surgery, Tsudanuma Central General Hospital, Chiba, Japan
| | - P Molinari
- University Of Insubria Anesthesia and Intensive Care, Varese, Italy
| | - E Contino
- University Of Insubria Anesthesia and Intensive Care, Varese, Italy
| | - L Guzzetti
- Department Of Anesthesia and Palliative Care, University Hospital Of Varese, Varese, Italy
| | - M Oggioni
- Department Of Anesthesia and Palliative Care, University Hospital Of Varese, Varese, Italy
| | - M Sambuco
- Department Of Anesthesia and Palliative Care, University Hospital Of Varese, Varese, Italy
| | - M Berselli
- University Hospital Of Varese Department Of Surgery, Varese, Italy
| | - L Farassino
- University Hospital Of Varese Department Of Surgery, Varese, Italy
| | - E Cocozza
- University Hospital Of Varese Department Of Surgery, Varese, Italy
| | - A Crespi
- University Of Insubria Anesthesia and Intensive Care, Varese, Italy
| | - A Ambrosoli
- Department Of Anesthesia and Palliative Care, University Hospital Of Varese, Varese, Italy
| | - Y Zhao
- Department of vascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Yau J, Hou Y, Lei X, Teoh H, Quan A, Singh K, Ramadan A, Ni H, Verma S. ENDOTHELIAL AUTOPHAGY REGULATES ARTERIAL THROMBUS FORMATION IN MICE. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Singh K, Lovren F, Matkar P, Pan Y, Quan A, Ramadan A, Al-Omran M, Verma S. ENDOTHELIAL-SPECIFIC LOSS OF AUTOPHAGY PROMOTES ORGAN FIBROSIS. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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25
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El-Ridy M, El-Shamy AE, Ramadan A, Abdel-Rahman R, Awad G, El-Batal A, Mohsen A, Darwish A. Liposomal Encapsulation of Amikacin Sulphate for Optimizing Its Efficacy and Safety. BJPR 2015; 5:98-116. [DOI: 10.9734/bjpr/2015/9298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Fagbo S, Durosinloun A, Ramadan A, Oni A, Asmari M, Asaigul A, Jinadu B, Siddiqui W. MERS CoV infection - ecological investigations. Int J Infect Dis 2014. [PMCID: PMC7129057 DOI: 10.1016/j.ijid.2014.03.486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Boussofara L, Ramadan A, Aounallah A, Belkahla M, Ghariani N, Saidi W, Denguezli M, Belajouza C, Nouira R. Syndrome de Werner : 6 cas. Ann Dermatol Venereol 2013. [DOI: 10.1016/j.annder.2013.09.460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ehsan M, Lovren F, Quan A, Pan Y, Singh K, Ramadan A, Wheatcroft M, Teoh H, Verma S. Adiponectin Limits Microparticle-Induced Endothelial Dysfunction. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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29
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Ramadan A, Singh K, Quan A, Lovren F, Pan Y, Ehsan M, Teoh H, Wheatcroft M, Verma S. An Essential Role of Autophagy in Vascular Smooth Muscle Cell Homeostasis. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Ramadan A, Pham Van L, Machavoine F, Dietrich C, Alkan M, Karasuyama H, Schneider E, Dy M, Thieblemont N. Activation of basophils by the double-stranded RNA poly(A:U) exacerbates allergic inflammation. Allergy 2013; 68:732-8. [PMID: 23621380 DOI: 10.1111/all.12151] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2013] [Indexed: 12/16/2022]
Abstract
BACKGROUND It is commonly acknowledged that asthma is exacerbated by viral infections. On the other hand, basophil infiltration of lung tissues has been evidenced postmortem in cases of fatal disease, raising the question of a possible link between these two observations. OBJECTIVES Herein, we addressed the relationship between asthma exacerbation by viral infection and basophil activation and expansion by investigating how stimulation with the dsRNA polyadenylic/polyuridylic acid [poly(A:U)] affected basophil activities and recruitment in an allergic airway inflammation model. METHODS The effect of dsRNA on basophils was assessed by measuring the cytokine levels produced upon stimulation. We used an OVA-induced experimental model of allergic asthma. Airway hyperreactivity, recruitment of infiltrating cells, and cytokine production were determined in the lung of mice having received poly(A:U), as compared with untreated controls. The exacerbating effect of basophils was assessed both by adoptive transfer of poly(A:U)-treated basophils and by their in vivo depletion with Ba103 antibody. RESULTS We found that in vitro treatment with poly(A:U) increased basophil functions by inducing TH 2-type cytokine and histamine production, whereas in vivo treatment increased peripheral basophil recruitment. Furthermore, we provide the first demonstration for increased infiltration of basophils in the lung of mice suffering from airway inflammation. In this model, disease symptoms were clearly exacerbated upon adoptive transfer of basophils exposed to poly(A:U), relative to their unstimulated counterpart. Conversely, in vivo basophil depletion alleviated disease syndromes, thus validating the transfer data. CONCLUSIONS Our findings provide the first evidence for airway inflammation exacerbation by basophils following dsRNA stimulation.
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Affiliation(s)
| | | | | | | | | | - H. Karasuyama
- Department of Immune Regulation; Tokyo Medical and Dental University Graduate School; Tokyo; Japan
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Helmy I, Nasr A, Ismail A, Ramadan A, Helmy K. Coronary artery anomalies: Role of contrast enhanced MDCT coronary angiography. The Egyptian Journal of Radiology and Nuclear Medicine 2012. [DOI: 10.1016/j.ejrnm.2012.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Bhuva N, Ramadan A, Ah-See M. 471 Outcome of Breast Cancer Patients with Isolated Supraclavicular Fossa Lymph Node Recurrence Treated with Radiotherapy. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70536-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ramadan A, Soliman G, Mahmoud SS, Nofal SM, Abdel-Rahman RF. Evaluation of the safety and antioxidant activities of Crocus sativus and Propolis ethanolic extracts. Journal of Saudi Chemical Society 2012. [DOI: 10.1016/j.jscs.2010.10.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ramadan A. An optimum current intensity for healing. J Wound Care 2012. [DOI: 10.12968/jowc.2012.21.1.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- A. Ramadan
- Regal Heights rehabilitation and Health Care Centre, New York, USA
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Ramadan A, Abd El-Aty AM. Pharmacokinetics and Distribution of Florfenicol in Bronchial Secretions of Healthy and Pasteurella multocida Infected Calves. Pharm Anal Acta 2011; 02. [DOI: 10.4172/2153-2435.1000117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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EL-Sooud KA, Hashem M, Ramadan A, EL-Aty AA, Awadallaha KY, Gab-Allaha A. Research Strategies for Treatment of Nanobacteria. Insight Nanotechnology 2011; 1:1-8. [DOI: 10.5567/inano-ik.2011.1.8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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El-Naggar H, Maghrawy H, Ramadan A. THERMODYNAMIC STUDIES OP SYNERGISTIC SOLVENT EXTRACTION OP Pa( V) BY BIS( 2-ETHYL HEXYL) PHOSPHORIC ACID MIXED WITH SOME ELECTRON DONER COMPOUNDS. Solvent Extraction and Ion Exchange 2010. [DOI: 10.1080/07366298408918456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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El-Shabrawy R, Ramadan A, El-Kady S. USE OF HUMIC ACID AND SOME BIOFERTILIZERS TO REDUCE NITROGEN RATES ON CUCUMBER (Cucumis sativus L.) IN RELATION TO VEGETATIVE GROWTH, YIELD AND CHEMICAL COMPOSITION. ACTA ACUST UNITED AC 2010. [DOI: 10.21608/jpp.2010.86562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Barrey C, Ramadan A, Campana S, Perrin G, Skalli W. La cinématique du rachis cervical après arthroplastie : évaluation en flexion–extension et inclinaison latérale. Neurochirurgie 2009. [DOI: 10.1016/j.neuchi.2009.08.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Atef M, Ramadan A, Darwish AS, Fahim AMM. Effect of albendazole administration on pharmacokinetic aspects of tylosin in lactating goats. Drug Metab Lett 2009; 3:137-43. [PMID: 19702546 DOI: 10.2174/187231209789352076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2009] [Accepted: 06/04/2009] [Indexed: 11/22/2022]
Abstract
Tylosin concentrations and its disposition kinetics in serum, urine, and milk of lactating goats following a single intravenous (i.v.) or intramuscular (i.m.) injection (10 mg kg(-1) b.wt.) were carried out using high performance liquid chromatography (HPLC).The concentration-time curve of tylosin after i.v. injection could be described by a two-compartment open model. Tylosin was rapidly distributed and eliminated from goat's bodies with t(1/2(beta)) value of 1.25 h. The V((d)) was less than one litre/kg and the MRT was 1.40 h. Concomitant administration with albendazole decreased tylosin concentrations in serum after its i.v. injection and the MRT was 1.17 h. The AUC and AUMC showed a significant decrease in goats given albendazole prior to injection as compared with those given tylosin only. Following i.m. administration, the absorption half-life and the corresponding t(max) revealed rapid absorption rate with systemic bioavailability (F%) of 76.2 %. Albendazole when given concurrently with tylosin decreased its serum concentrations due to lower bioavailability (43.25 %). Following i.v. or i.m. injection, tylosin was excreted rapidly in urine in concentration much higher than those determined in serum and milk. Tylosin administered in goats pretreated with albendazole was excreted at lower concentration in urine, with a significant decrease from 1(st) to 10(th) hours as compared with animals given tylosin only. Following i.v. or i.m. administration of tylosin, the drug was excreted in high concentrations in milk. A significant decrease in milk concentrations was reported in goats pretreated with albendazole.
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Affiliation(s)
- M Atef
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211-Egypt.
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El-lithy Y, Ramadan A, Abd El-All H. EFFECT OF SOME SOIL AMENDMENTS APPLICATION ON HEAVY METAL UPTAKE IN SOME VEGETABLE CROPS. Journal of Plant Production 2008; 33:6041-6052. [DOI: 10.21608/jpp.2008.170409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Affiliation(s)
- A. Ramadan
- Regal Heights Rehabilitation and Health Care Centre, New York, US
| | - M. Elsaidy
- New York, US and Physical Therapy Supervisor, EL Qaser El Ani Teaching Hospital, Cairo University, Cairo, Egypt
| | - R. Zyada
- New York City Board of Education, US
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Ramadan A. Response to comments on: “Application of a three-layer modeling approach for solids transportation in horizontal and inclined channels” by A. Ramadan, P. Skalle, and A. Saasen. Chem Eng Sci 2006. [DOI: 10.1016/j.ces.2006.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ramadan A, Skalle P, Saasen A. Application of a three-layer modeling approach for solids transport in horizontal and inclined channels. Chem Eng Sci 2005. [DOI: 10.1016/j.ces.2004.12.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Cosson E, Paycha F, Paries J, Cattan S, Ramadan A, Meddah D, Attali JR, Valensi P. Detecting silent coronary stenoses and stratifying cardiac risk in patients with diabetes: ECG stress test or exercise myocardial scintigraphy? Diabet Med 2004; 21:342-8. [PMID: 15049936 DOI: 10.1111/j.1464-5491.2004.01157.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS To determine whether performing a myocardial scintigraphy immediately after a maximal electrocardiogram (ECG) stress test is effective in detecting silent coronary stenoses and predicting cardiovascular events. METHODS Asymptomatic patients (n = 262) aged 57.6 +/- 8.8 years, with diabetes for 12.0 years (5-39) [median (range)] and no history of a cardiac event, underwent a maximal ECG stress test followed by a myocardial scintigraphy. The patients with an abnormal ECG stress test or abnormal imaging underwent a coronary angiography. Cardiac events were assessed in 250 (95.4%) patients followed for 37.8 months (3-101). RESULTS The ECG stress test was abnormal in 54 patients. Among them, 18 had coronary stenoses and seven had a cardiac event. Despite a normal ECG stress test, the myocardial scintigraphy was abnormal in 42 additional patients, including 16 patients with coronary stenoses. Four of these 42 patients experienced a cardiac event. Follow-up showed a poor prognosis in subjects who were abnormal on the two tests. Univariate predictors of the 15 cardiac events were the ECG stress test [odds ratio (OR) 3.9, 95% confidence interval (CI) 1.3, 11.4, P = 0.008], myocardial scintigraphy (OR 3.8, 95% CI 1.3, 11.0, P = 0.009), coronary stenoses (OR 26.6, 95% CI 7.6, 90.7, P < 0.001), and peripheral or carotid occlusive arterial disease (OR 9.5, 95% CI 2.1, 42.5, P < 0.001). CONCLUSIONS In the asymptomatic patients with diabetes, combining a myocardial scintigraphy with a maximal ECG stress test is effective in detecting more patients with coronary stenoses and predicting cardiovascular events. However, the ECG stress test has a good negative predictive value for cardiac events (97%), is cheaper, and should therefore be proposed first.
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Affiliation(s)
- E Cosson
- Department of Endocrinology-Diabetology-Nutrition, AP-HP, Paris-Nord University, Jean Verdier Hospital, Bondy, France.
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Ramadan A, Skalle P, Johansen S. A mechanistic model to determine the critical flow velocity required to initiate the movement of spherical bed particles in inclined channels. Chem Eng Sci 2003. [DOI: 10.1016/s0009-2509(03)00061-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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El-Hennawy A, Yousry E, Ramadan A, Abd El-Hameed H, Abd El-Fatah M. Study and modeling of a new MOSFET device for precision detection of microwave signal polarization. Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109) 2002. [DOI: 10.1109/nrsc.1998.711508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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El-Hennawy A, Abd El-Hameed H, Ramadan A, El-Ftah M. Design and investigation of a very wide dynamic microwave electronic counter entirely intergrated using traditional MOSFET technology (∼1E4 Hz to 1E11 Hz). Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109) 2002. [DOI: 10.1109/nrsc.1998.711507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Afifi A, Refaat H, Wahba AM, Karim MA, El Sharkawy M, Ramadan A, Aziz A, Fayez R. Hemodialysis vascular access among chronic renal failure patients in Egypt. J Vasc Access 2002; 3:164-8. [PMID: 17639480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
Abstract
BACKGROUND Proper choice of the vascular access plays a crucial role in dialysis outcome. The prevalence and types of vascular access have not yet been investigated in Egypt. Our work aims to study prevalence, patency rate, complications and factors affecting different types of vascular access in Egypt. PATIENTS AND METHODS We studied one thousand hemodialysis patients in eighteen dialysis centers in Egypt. RESULTS 93% of the patients had natural arteriovenous access while 7% had synthetic arteriovenous grafts. The patency rate of natural fistulae was significantly higher than that of synthetic grafts (3.07 +/- 3 versus 1.5 +/- 2 years respectively). Many arteriovenous grafts were done because natural arteriovenous fistula was unsuitable or after its failure. Natural radiocephalic fistula was the most prevalent type (67.3%), with a patency rate significantly higher than all other sites (3.3 +/- 3 years). Only 10.2% of patients had a fistula created before the start of dialysis. Thrombosis rate was significantly higher in synthetic arteriovenous grafts (32.4%) than in natural arteriovenous fistulae (9.3%). Diabetes and hyperlipidemia significantly decreased the patency rate of natural arteriovenous fistula but not that of synthetic grafts. Patency of arteriovenous fistula in non-diabetics was 3.2 +/- 3.1 years versus 2 +/- 1.9 years in diabetics. Patency of arteriovenous fistula in non-hyperlipidemic patients was 3.1 +/- 3 years versus 1.5 +/- 1.6 years with hyperlipidemia. Temporary vascular access prior to permanent access was used in 90% of patients, of which femoral catheters were used in 53.6%, jugular catheters in 38% and subclavian catheters in 8.4%. The incidence of primary access failure was significantly higher in patients with a previous subclavian catheter insertion. CONCLUSIONS Natural arteriovenous fistula is the access of choice for hemodialysis patients in Egypt. It has higher patency rate, lower complication rate and nephrologists prefer it. Diabetes and hyperlipidemia decrease patency rate of natural arteriovenous fistula but not synthetic grafts. Subclavian catheter is better avoided due to increased incidence of primary access failure.
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Affiliation(s)
- A Afifi
- Department of Internal Medicine and Nephrology, Ain Shams University, Cairo - Egypt
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Abstract
Heat shock proteins with molecular weight 70 kDa (hsp70) are highly conserved immunogenic intracellular molecules. There are two main subtypes: one is expressed constitutively (hsc70), while the other is induced under stressful conditions (ihsp70). Using an ELISA directed against recombinant human ihsp70, antibody titers were determined in patients with defined ocular inflammatory conditions (Behçet's disease, Vogt-Koyanagi-Harada (VKH), pars planitis, and sarcoidosis) as well as in a group of age-matched normal volunteers. In comparison to healthy controls (n = 14, absorbance 0.269), levels were significantly elevated in Behçet's disease (n = 18; 0.412), sarcoidosis (n = 15; 0.432), and pars planitis (n = 13; 0.346), but not in VKH (n = 10; 0.263). A correlation was also noted for treatment versus no treatment in pars planitis (p = 0.028), but not in other inflammatory conditions. There was no correlation with the level of intraocular disease activity as defined by vitreous haze and vision drop. Since pars planitis is a purely ocular condition, circulating levels of ihsp antibodies likely reflect the extent of disease involvement within the eye.
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Affiliation(s)
- M D de Smet
- Clinical Immunology Section, Laboratory of Immunology, National Eye Institute, Bethesda, Maryland, USA.
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