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Eltobshy SAG, Messiha R, Metias E, Sarhan M, El-Gamal R, El-Shaieb A, Ghalwash M. Effect of SGLT2 Inhibitor on Cardiomyopathy in a Rat Model of T2DM: Possible involvement of Cardiac Aquaporins. Tissue Cell 2023; 85:102200. [PMID: 37660414 DOI: 10.1016/j.tice.2023.102200] [Citation(s) in RCA: 1] [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] [Received: 04/08/2023] [Revised: 08/17/2023] [Accepted: 08/19/2023] [Indexed: 09/05/2023]
Abstract
Diabetic cardiomyopathy (DCM) causes arrhythmia, heart failure, and sudden death. Empagliflozin, an SGLT-2 (Sodium glucose co-transporter) inhibitor, is an anti-diabetic medication that decreases blood glucose levels by stimulating urinary glucose excretion. Several aquaporins (AQPs) including AQP-1-3 and - 4 and their involvement in the pathogenesis in different cardiac diseases were detected. In the current study the effect of Empagliflozin on diabetic cardiomyopathy and the possible involvement of cardiac AQPs were investigated. METHODS 56 adult male Sprague-Dawley rats were divided into 4 groups: Control, DCM: type 2 diabetic rats, low EMPA+DCM received empagliflozin (10 mg/kg/day) and high EMPA+DCM received empagliflozin (30 mg/kg/day) for 6 weeks. RESULTS Administration of both EMPA doses, especially in high dose group, led to significant improvement in ECG parameters. Also, a significant improvement in biochemical and cardiac oxidative stress markers (significant decrease in serum CK-MB, and malondialdehyde while increasing catalase) with decreased fibrosis and edema in histopathological examination and a significant attenuation in apoptosis (caspase-3) and edema (AQP-1& -4). CONCLUSION Both doses of Empagliflozin have a cardioprotective effect and reduced myocardial tissue edema with high dose having a greater effect. This might be due to attenuation of oxidative stress, fibrosis and edema mediated through AQP-1, - 3& - 4 expression.
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Affiliation(s)
- Somaia A G Eltobshy
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Refka Messiha
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Emile Metias
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Mohamed Sarhan
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Randa El-Gamal
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt; Medical Experimental Research Center, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Ahmed El-Shaieb
- Department of Pathology, Faculty of Veterinary Medicine, Mansoura university, Mansoura 35516, Egypt
| | - Mohammad Ghalwash
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
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Talaat M, Tolba S, Abdou E, Sarhan M, Gomaa M, Hutin YJF. Over-Prescription and Overuse of Antimicrobials in the Eastern Mediterranean Region: The Urgent Need for Antimicrobial Stewardship Programs with Access, Watch, and Reserve Adoption. Antibiotics (Basel) 2022; 11:antibiotics11121773. [PMID: 36551430 PMCID: PMC9774351 DOI: 10.3390/antibiotics11121773] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/30/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Excessive antimicrobial use contributes to the development of antimicrobial resistance. In the Eastern Mediterranean region (EMR), there is dearth of information on the prevalence of antimicrobial use in patients hospitalized in acute healthcare settings, clinical indications, types of antimicrobials prescribed, and quality indicators for prescriptions. Between September and December 2019, seven countries in the EMR conducted a standardized point prevalence survey. All patients present in the hospital wards at 8 a.m. on the day of the survey constituted the sample population. We collected data, including patient characteristics, antimicrobials received, therapeutic indication according to predefined lists, and markers of prescribing quality. The survey included data from 139 hospitals in seven countries. Among the 19,611 inpatients surveyed, 11,168 patients received at least one antimicrobial {crude prevalence: 56.9% (95%CI: 56.2-57.6%). The top three classes of antimicrobials prescribed were third-generation cephalosporins (26.7%), beta-lactam penicillins (18.1%), and imidazole derivatives (n = 1655, 9.8%). Carbapenems were most frequently prescribed for the treatment of healthcare-associated infections. Compliance with quality indicators of antimicrobial use was limited where treatment guidelines were available for 41% of antimicrobial prescriptions and targeted antimicrobial treatment represented 21% of therapeutic indications. Overall hospital antimicrobial use was high in countries of the EMR, pointing to the need to design and implement context-specific antimicrobial stewardship programs to optimize antimicrobial use and reduce antimicrobial resistance.
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Affiliation(s)
- Maha Talaat
- Antimicrobial Resistance and Infection Prevention and Control Unit, Universal Health Coverage, Communicable Diseases Department, Eastern Mediterranean Office, World Health Organization, Cairo P.O. Box 7608, Egypt
| | - Sara Tolba
- Antimicrobial Resistance and Infection Prevention and Control Unit, Universal Health Coverage, Communicable Diseases Department, Eastern Mediterranean Office, World Health Organization, Cairo P.O. Box 7608, Egypt
| | - Enjy Abdou
- Antimicrobial Resistance and Infection Prevention and Control Unit, Universal Health Coverage, Communicable Diseases Department, Eastern Mediterranean Office, World Health Organization, Cairo P.O. Box 7608, Egypt
- Correspondence:
| | - Mohamed Sarhan
- Antimicrobial Resistance and Infection Prevention and Control Unit, Universal Health Coverage, Communicable Diseases Department, Eastern Mediterranean Office, World Health Organization, Cairo P.O. Box 7608, Egypt
| | - Mohamed Gomaa
- Antimicrobial Resistance and Infection Prevention and Control Unit, Universal Health Coverage, Communicable Diseases Department, Eastern Mediterranean Office, World Health Organization, Cairo P.O. Box 7608, Egypt
| | - Yvan J-F. Hutin
- Department of Universal Health Coverage/Communicable Diseases Prevention and Control, Eastern Mediterranean Office, World Health Organization, Cairo P.O. Box 7608, Egypt
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Sarhan M, Abd El-Gayed S. Supplemental Foliar Applied-Potassium Induces Tolerance to Water Deficit in Cotton Plants. Egyptian Journal of Agricultural Research 2022; 0:0-0. [DOI: 10.21608/ejar.2022.167421.1289] [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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Yunis M, Nour I, Gibreel A, Darwish M, Sarhan M, Shouman B, Nasef N. Correction to: Effect of delayed cord clamping on stem cell transfusion and hematological parameters in preterm infants with placental insufficiency: a pilot randomized trial. Eur J Pediatr 2022; 181:3561-3562. [PMID: 35781837 DOI: 10.1007/s00431-022-04519-3] [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: 11/29/2022]
Affiliation(s)
- Mohammed Yunis
- Neonatal Intensive Care Unit, Mansoura University Children's Hospital, Mansoura, Egypt
| | - Islam Nour
- Neonatal Intensive Care Unit, Mansoura University Children's Hospital, Mansoura, Egypt.,Department of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
| | - Ahmed Gibreel
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
| | - Mohamad Darwish
- Department of Clinical Pathology, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
| | - Mohamed Sarhan
- Hematology and Oncology Unit, Mansoura University Children's Hospital, Mansoura, Egypt.,Department of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
| | - Basma Shouman
- Neonatal Intensive Care Unit, Mansoura University Children's Hospital, Mansoura, Egypt.,Department of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
| | - Nehad Nasef
- Neonatal Intensive Care Unit, Mansoura University Children's Hospital, Mansoura, Egypt. .,Department of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura, Egypt.
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Castillo FL, Sarhan M, Saify AEFE, Aguilar VJ, Bethancourt RE, Ferrer G, Cortes A, Bacina B, Sudiro H. First Multilateral Well in the Most Congested Field in Abu Dhabi, Case of Study. Day 1 Mon, November 15, 2021 2021. [DOI: 10.2118/207327-ms] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
This paper will highlight the first level 2 Multi-lateral well in BAB Field with permanent limited entry liner completion in the lower borehole to enhance accessibility and production. The well presents a technical milestone to the company in the development of multiple reservoir by combining two (2) wells from different reservoir and produce from both by using same surface well construction.
At initial stage, the economics related to the implementation of the multilateral approach were analysed. Calculation was done by comparing the cost related to the technology application against the cost to prepare one (1) location plus completing a well up to the 7" liner and mobilizing the rig twice. Then, it was necessary to select the candidate wells to be drilled from the same slot where synergy between Study team and drilling team was in place in order to ensure proper target alignment to make feasible the drilling and completion operations at the same time that the production targets were fulfilled.
This project confirmed the feasibility of multilateral well application in a very congested field in terms of wells construction and surface facilities. In order to achieve such goal full synergy must be in place to select proper wells candidates and align targets.
Cost reduction is massive considering the elimination of three (3) well phases plus avoidance of one (1) location construction and also the elimination of 1 rig move represents a big impact in terms of economics. Furthermore, the impact in terms of the risk reduction must be considered
By combining two (2) wells in one (1) and eliminating three (3) phases in the standard well construction the harmful impact of location preparation, drilling fluids and cuttings on the environment is reduced by 45%, especially with oil base mud system.
Geological problems can be observed during drilling each phase of a new well. However, drilling multilateral wells will reduce this occurrence.
Well was completed with 7"× 4-1/2" top packer, 4-1/2" Slotted tubing and seven (7) swellable packers in lower borehole as well as Dual upper completion with 7" single retrievable and 9-5/8" dual retrievable packer and 2-7/8" and 3-1/2" tubing combination in both short and long string.
This paper presents ADNOC Onshore first and successful experience in the deployment of new acquired technology for the Drilling multi-lateral / dual completion systems in BAB Field. The screening criteria for selecting the system as well as the benefits realized and lessons learned from this experience are also discussed together with the design simulations required to ensure the success of the well construction.
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AbouEisha H, Mohamed A, Daoud M, Abd Alsalam A, Ramzy T, Sarhan M. The effect of laparoscopic sleeve gastrectomy on adiponectin level. Egypt J Chem 2021. [DOI: 10.21608/ejchem.2021.96584.4530] [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: 10/19/2022]
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Sarhan M, Abd Elhafeez A, bashandy S. Evaluation of Heavy Metals Concentration in Soil and Plants as Affected by Vehicular Emission in Alluvial Soil at Middle Egypt Conditions. Egypt J Soil Sci 2021; 0:0-0. [DOI: 10.21608/ejss.2021.89288.1460] [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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Sarhan M, Bashanday S, Abd El-Gayed S. Water Stress on Cotton Plants as Affected by Potassium and Nano chitosan-NPK Fertilizer. Scientific Journal of Agricultural Sciences 2021; 0:0-0. [DOI: 10.21608/sjas.2021.86571.1132] [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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Sarhan M, Etewa S, Al-Hoot AA, Arafa S, Shokir R, Moawad H, Mohammad S. Stem cells as a potential therapeutic trend for experimental trichinosis. Parasitologists United Journal 2021; 14:151-161. [DOI: 10.21608/puj.2021.74081.1118] [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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Nagy M, Nasef N, Gibreel A, Sarhan M, Aldomiaty H, Darwish M, Nour I. Impact of Umbilical Cord Milking on Hematological Parameters in Preterm Neonates With Placental Insufficiency. Front Pediatr 2021; 9:827219. [PMID: 35310142 PMCID: PMC8930845 DOI: 10.3389/fped.2021.827219] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 12/30/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Data is still lacking about the expediency of umbilical cord milking (UCM) in preterm neonates born to mothers with placental insufficiency (PI). OBJECTIVE To study the effect of UCM in preterm neonates who had ante-natal evidence of placental insufficiency on peripheral blood cluster of differentiation 34 (CD34) percentage, hematological indices, and clinical outcomes. METHODS Preterm neonates, <34 weeks' gestation, born to mothers with evidence of placental insufficiency that underwent UCM (PI+UCM group) were compared with historical controls whose umbilical stumps were immediately clamped [PI+ICC (immediate cord clamping) group] in a case-control study. Peripheral blood CD34 percentage as a measure of hematopoietic stem cell transfusion was the primary outcome. Early and late-onset anemia; polycythemia; frequency of packed red blood cells (PRBCs) transfusion during NICU stay; peak total serum bilirubin (TSB); incidence of phototherapy, admission rectal temperature; first 24 h hypothermia and hypoglycemia; episodes of hypotension and need for volume expander boluses and inotropic support during the first 24 h of age; duration of oxygen therapy; bronchopulmonary dysplasia (BPD); severe intra-ventricular hemorrhage (IVH); necrotizing enterocolitis (NEC); culture-proven late-onset sepsis; length of hospital stay; and in-hospital mortality were secondary outcomes. RESULTS In preterm infants with placental insufficiency, umbilical cord milking was associated with greater peripheral blood CD34 percentage, hemoglobin levels initially and at postnatal age of 2 months, alongside significantly shorter duration of oxygen therapy compared with ICC group. Frequency of packed RBCs transfusion during hospital stay was comparable. Neonates in UCM group had a greater peak TSB level during admission with significantly higher need for phototherapy initiation compared with ICC. Logistic regression, adjusted for gestational age, revealed that UCM resulted in greater CD34 percentage, higher initial hemoglobin level, higher peak serum bilirubin, significant increase of phototherapy initiation, and higher hemoglobin level at 2 months. CONCLUSIONS UCM in preterm neonates born to mothers with placental insufficiency was feasible and resulted in greater CD34 percentage, higher initial hemoglobin level, higher peak serum bilirubin, significant increase of phototherapy initiation, and higher hemoglobin level at 2 months.
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Affiliation(s)
- Mohammed Nagy
- Neonatal Intensive Care Unit, Mansoura University Children's Hospital, Mansoura, Egypt
| | - Nehad Nasef
- Neonatal Intensive Care Unit, Mansoura University Children's Hospital, Mansoura, Egypt.,Departement of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
| | - Ahmed Gibreel
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
| | - Mohamed Sarhan
- Departement of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura, Egypt.,Hematology Unit, Mansoura University Children's Hospital, Mansoura, Egypt
| | - Hoda Aldomiaty
- Departement of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura, Egypt.,Hematology Unit, Mansoura University Children's Hospital, Mansoura, Egypt
| | - Mohammed Darwish
- Departement of Clinical Pathology, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
| | - Islam Nour
- Neonatal Intensive Care Unit, Mansoura University Children's Hospital, Mansoura, Egypt.,Departement of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
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Elmosallamy A, Ibraheem E, Sarhan M, Hussein S. Chemical and Biological Activities of Deverra triradiata Hochst. ex. Boiss. Aerial parts from St.Catherine, Southern Sinai, Egypt. Egypt J Chem 2020. [DOI: 10.21608/ejchem.2020.52846.3092] [Citation(s) in RCA: 1] [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: 10/22/2022]
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12
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Etewa S, Al-Hoot AA, Sharaf H, Moawad H, Mohamed S, Alshafey M, Senosy H, Sarhan M. Modelling approaches to predict and evaluate schistosomiasis immunization utilizing SEA loaded on chitosan nanoparticles via liver tissue differentiation and angiogenesis. Parasitologists United Journal 2019; 12:197-208. [DOI: 10.21608/puj.2019.16532.1051] [Citation(s) in RCA: 1] [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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Hassan M, Abd El-Rahman E, Abd El-Hamed E, Abdel Fattah A, Harb O, Mohamed S, Sarhan M. The Impact of Nitazoxanide Loaded on Solid Lipid Nanoparticles on Experimental Trichinellosis. Zagazig University Medical Journal 2019; 0:0-0. [DOI: 10.21608/zumj.2019.16531.1480] [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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Etewa S, Al-Hoot AA, Abdelmoaty S, Mohammad S, Moawad H, Sarhan M, Abd El-Rahman S, El-Shafey M, Abd El-Monem E. The Outcomes of Mesenchymal Stem Cells Therapy for Experimental Toxoplasmosis. Parasitologists United Journal 2019; 0:0-0. [DOI: 10.21608/puj.2019.7541.1030] [Citation(s) in RCA: 1] [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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Etewa S, Al-Hoot AA, Sharaf H, Mohammad S, Moawad H, Sarhan M, El-Shafey M, Senosy H. A potential prophylactic strategy of anti-schistosomal immunization using nanotechnology in murine models. Parasitologists United Journal 2018; 11:162-174. [DOI: 10.21608/puj.2018.6072.1023] [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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Eid FA, Abu Elnaga N, Sarhan M, Mansour H. Effect of monosodium glutamate on liver of pregnant rats and their fetuses (Histological and histochemical studies). ACTA ACUST UNITED AC 2018. [DOI: 10.21608/ejhm.2018.21951] [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: 10/21/2022]
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Sarhan M, Moemen D, Tarshoby M, Swelim M, Abd El-Raouf M. Microbiological Studies on the Effect of Medicinal Plant Extracts on Diabetic Foot Ulcer Bacteria. Egyptian Journal of Medical Microbiology 2018; 27:41-47. [DOI: 10.21608/ejmm.2018.285521] [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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Sarhan M, Abd El-Hamed A. Effect of Potassium Application Methods on Some Wheat Varieties (Triticum aestivum L.) Production Under Middle Egypt Conditions. Alexandria Journal of Soil and Water Sciences 2018; 2:48-65. [DOI: 10.21608/ajsws.2018.225403] [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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Etewa S, Abdel-Rahman S, Fathy G, Abo El-Maaty D, Sarhan M. Parasitic Contamination of Commonly Consumed Fresh Vegetables and Fruits in Some Rural Areas of Sharkyia Governorate, Egypt. ACTA ACUST UNITED AC 2017. [DOI: 10.21608/aeji.2017.17804] [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: 10/28/2022]
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Galal O, Sarhan M, Abd El-Hafeez A. Evaluation of the Effect of Amino Acids, Sulphur and Farmyard Manure Along with Phosphorus Fertilization on Wheat Production, Nutrient Status and Soil Properties. Journal of Soil Sciences and Agricultural Engineering 2017; 8:139-147. [DOI: 10.21608/jssae.2017.37238] [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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Hasaneen BM, Sarhan M, Samir S, ELAssmy M, Sakrana AA, Ashamalla GA. T2 ∗ magnetic resonance imaging: A non-invasive biomarker of brain iron content in children with attention-deficit/hyperactivity disorder. The Egyptian Journal of Radiology and Nuclear Medicine 2017. [DOI: 10.1016/j.ejrnm.2016.08.001] [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: 01/20/2023] Open
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Drescher P, Sarhan M, Seitz H. An Investigation of Sintering Parameters on Titanium Powder for Electron Beam Melting Processing Optimization. Materials (Basel) 2016; 9:ma9120974. [PMID: 28774095 PMCID: PMC5456985 DOI: 10.3390/ma9120974] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 10/20/2016] [Accepted: 11/04/2016] [Indexed: 11/29/2022]
Abstract
Selective electron beam melting (SEBM) is a relatively new additive manufacturing technology for metallic materials. Specific to this technology is the sintering of the metal powder prior to the melting process. The sintering process has disadvantages for post-processing. The post-processing of parts produced by SEBM typically involves the removal of semi-sintered powder through the use of a powder blasting system. Furthermore, the sintering of large areas before melting decreases productivity. Current investigations are aimed at improving the sintering process in order to achieve better productivity, geometric accuracy, and resolution. In this study, the focus lies on the modification of the sintering process. In order to investigate and improve the sintering process, highly porous titanium test specimens with various scan speeds were built. The aim of this study was to decrease build time with comparable mechanical properties of the components and to remove the residual powder more easily after a build. By only sintering the area in which the melt pool for the components is created, an average productivity improvement of approx. 20% was achieved. Tensile tests were carried out, and the measured mechanical properties show comparatively or slightly improved values compared with the reference.
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Affiliation(s)
- Philipp Drescher
- Fluid Technology and Microfluidics, University of Rostock, Justus-von-Liebig Weg 6, 18059 Rostock, Germany.
| | - Mohamed Sarhan
- Fluid Technology and Microfluidics, University of Rostock, Justus-von-Liebig Weg 6, 18059 Rostock, Germany.
| | - Hermann Seitz
- Fluid Technology and Microfluidics, University of Rostock, Justus-von-Liebig Weg 6, 18059 Rostock, Germany.
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ElMarsafawy H, Matter MK, Sarhan M, El-Ashry R, Al-Tonbary Y. Reply. Echocardiography 2016; 33:1114. [DOI: 10.1111/echo.13256] [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: 11/29/2022] Open
Affiliation(s)
- Hala ElMarsafawy
- Cardiology Unit; Mansoura University Children Hospital; Mansoura Dakahlyia Egypt
| | - Mohamed K. Matter
- Cardiology Unit; Mansoura University Children Hospital; Mansoura Dakahlyia Egypt
| | - Mohamed Sarhan
- Hematology/Oncology/BMT Unit; Mansoura University Children Hospital; Mansoura Dakahlyia Egypt
| | - Rasha El-Ashry
- Hematology/Oncology/BMT Unit; Mansoura University Children Hospital; Mansoura Dakahlyia Egypt
| | - Youssef Al-Tonbary
- Hematology/Oncology/BMT Unit; Mansoura University Children Hospital; Mansoura Dakahlyia Egypt
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Hussein AM, Eldosoky M, Handhle A, Elserougy H, Sarhan M, Sobh MA, Hussiny ME, El Nashar EM. Effects of long-acting erythropoietin analog darbepoetin-α on adriamycin-induced chronic nephropathy. Int Urol Nephrol 2015; 48:287-97. [PMID: 26660954 DOI: 10.1007/s11255-015-1171-1] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 11/21/2015] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To study the effects of darbepoetin-α (DPO-α) (erythropoietin analog) on adriamycin (ADR)-induced chronic nephropathy in rats. METHODS Sixty-nine male Sprague-Dawley rats divided into 3 groups (23 rats each): negative control group: normal rats received saline as a vehicle; positive control (ADR) group: rats received 2 iv injection of ADR via penile vein at 14-day interval without treatment; and DPO-α group: as ADR group but rats received sc DPO-α (0.3 μg/kg bw) once weekly for 12 weeks. By the end of experiment hemoglobin (Hb) content, serum creatinine, BUN, albumin, triglycerides and cholesterol, urinary protein excretion and kidney injury molecule-1 (KIM-1). GSH, malondialdehyde, caspase-3 expression histopathological and electron microscopic examinations for kidney tissues were done. RESULTS DPO-α significantly improved the animal survival rate and body weight, Hb, serum BUN, triglycerides, cholesterol, and albumin and urinary protein excretion and KIM-1 in urine. Also, administration of DPO-α improved the morphological damage in glomeruli and renal tubules as well as caspase-3 expression and markers of oxidative stress in kidney tissues. CONCLUSION Administration of DPO-α alleviates ADR nephropathy and this might due to improvement of Hb content, hyperlipidemia, enhancement of endogenous antioxidants, reduction of apoptosis and tubulointerstitial injury and maintaining the integrity of glomerular membrane.
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Affiliation(s)
- Abdelaziz M Hussein
- Department of Medical Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
| | - Mohamed Eldosoky
- Department of Medical Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Ahmed Handhle
- Medical Biochemistry Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Hanaa Elserougy
- Department of Medical Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mohamed Sarhan
- Department of Medical Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mohamed A Sobh
- Medical Experimental Research Center, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mahmoud El Hussiny
- Medical Experimental Research Center, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Eman M El Nashar
- Department of Histology and Cell Biology, Faculty of Medicine, Benha University, Benha, Egypt
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ElMarsafawy H, Matter M, Sarhan M, El-Ashry R, Al-Tonbary Y. Assessment of Myocardial Function in Children before and after Autologous Peripheral Blood Stem Cell Transplantation. Echocardiography 2015; 33:82-9. [PMID: 26059008 DOI: 10.1111/echo.12988] [Citation(s) in RCA: 9] [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: 11/30/2022] Open
Abstract
BACKGROUND Increased interest is focused on the long-term adverse effects of bone marrow transplantation. Subclinical cardiac involvement appears common in adults, but only a few reports have examined pediatric patients. MATERIALS AND METHODS A prospective case-control study of 19 children with normal cardiac function undergoing autologous hematopoietic stem cell transplantation (HSCT) was performed. Tissue Doppler imaging (TDI) and echocardiographic measurements were obtained according to the guidelines of the American Society of Echocardiography before and 3 months after HSCT. RESULTS Lateral mitral annulus before HSCT showed significant reduced mitral systolic annular velocity (P < 0.0001), early diastolic annular velocity (P < 0.0001), late diastolic annular velocity (P = 0.02) and prolonged isovolumetric relaxation time (IRT) (P < 0.0001) compared with control. Significant reduced mitral systolic annular velocity (P < 0.0001), early diastolic annular velocity (P = 0.0005) and Em/Am ratio (P = 0.004), with higher late diastolic annular velocity (P = 0.02) and prolonged isovolumetric contraction time (ICT) (P = 0.003) and IRT (P = 0.002) after HSCT, were observed. Investigation of lateral tricuspid annulus showed nearly similar results as the lateral mitral annulus. LV and RV Tei indices were higher before HSCT compared with control and remained high after HSCT. CONCLUSION TDI detected subtle abnormalities in systolic and diastolic functions before and after HSCT, which suggests that a conditioning regimen may affect cardiac function.
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Affiliation(s)
- Hala ElMarsafawy
- Cardiology Unit, Mansoura University Children Hospital, Mansoura, Egypt
| | - Mohamed Matter
- Cardiology Unit, Mansoura University Children Hospital, Mansoura, Egypt
| | - Mohamed Sarhan
- Hematology/Oncology/BMT Unit, Mansoura University Children Hospital, Mansoura, Egypt
| | - Rasha El-Ashry
- Hematology/Oncology/BMT Unit, Mansoura University Children Hospital, Mansoura, Egypt
| | - Youssef Al-Tonbary
- Hematology/Oncology/BMT Unit, Mansoura University Children Hospital, Mansoura, Egypt
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Sarhan M, El Serougy H, Hussein AM, El-Dosoky M, Sobh MA, Fouad SA, Sobh M, Elhusseini F. Impact of bone-marrow-derived mesenchymal stem cells on adriamycin-induced chronic nephropathy. Can J Physiol Pharmacol 2014; 92:733-43. [PMID: 25093892 DOI: 10.1139/cjpp-2013-0503] [Citation(s) in RCA: 10] [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: 12/21/2022]
Abstract
OBJECTIVES To study the effects of bone-marrow-derived mesenchymal stem cells (BM-MSCs) on adriamycin (ADR)-induced chronic nephropathy in rats. METHODS 60 male Sprague-Dawley rats were distributed among 3 groups (20 rats each): (i) the negative control group, which was normal rats that received saline (vehicle); (ii) the positive control (ADR) group, which was rats that received 2 intravenous injections of ADR into the penile vein at 14 day intervals without treatment, and (iii) the MSC group, which were rats treated as for the ADR group that were also given 2 intravenous injections of MSCs (5 days after each ADR injection). RESULTS ADR caused a significant reduction in animal body mass, survival rate, hemoglobin (Hb) content, serum albumin, and renal GSH, and significantly increased serum levels of triglycerides, cholesterol, urinary protein excretion and kidney injury molecule-1 (KIM-1), renal MDA, as well as caspase-3 expression and glomerular and tubulointerstitial damage compared with the negative control group. MSC treatment failed to improve animal survival rate, body mass, Hb level, proteinuria, or hypoalbuminemia; however, it mildly improved the serum BUN, hyperlipidemia, caspase-3 expression, urinary levels of KIM-1, renal oxidative stress markers, and glomerular and tubulointerstitial damage score. CONCLUSION administration of BM-MSCs during induction of ADR nephropathy provides partial protection, which could be due to improvements in the levels of of endogenous antioxidants, reduction of apoptosis, and maintenance of the integrity of the glomerular membrane.
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Affiliation(s)
- Mohamed Sarhan
- a Department of Medical Physiology, Faculty of Medicine, Mansoura University, Egypt
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Mukhtar A, Hasanin A, El-Adawy A, Osman S, Ahmed A, Nassar H, Saad D, Zaghloul A, Sarhan M, Reda M. The Friday of Rage of the Egyptian Revolution. Anesth Analg 2012; 114:862-5. [DOI: 10.1213/ane.0b013e3182468fda] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Khalil KI, Shokeir AA, Wafa EW, Gad GEMA, Helmy SA, Nour EM, Sarhan M. Renoprotection against complete unilateral ureteric obstruction: Is there an ultimate choice? Arab J Urol 2012; 10:199-206. [PMID: 26558026 PMCID: PMC4442888 DOI: 10.1016/j.aju.2011.11.004] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 11/17/2011] [Accepted: 11/17/2011] [Indexed: 12/02/2022] Open
Abstract
Objectives To evaluate and compare the relative contribution of different therapeutic agents for renoprotection against complete unilateral ureteric obstruction (UUO), using a rabbit model sampled at different times. Materials and methods Eighty-four male New Zealand White rabbits were divided into seven groups of 12 rabbits; a sham group, a control (left UUO + no medication) or left UUO and treated with either enalapril, losartan, verapamil, l-arginine or antioxidant (vitamin E and selenium mixture). Rabbits in the control and treated groups were subjected to 3, 10 and 21 days of complete ureteric ligation and then killed humanely. The control and treated groups were evaluated at baseline and at the end of the experiment, by measuring split effective renal plasma flow (ERPF) using diuretic renography, and the split glomerular filtration rate (GFR) using selective creatinine clearance. Renal histopathology was evaluated using a tubulo-interstitial damage score. Results In the sham group there was no significant effect on any of the evaluated variables. For split ERPF, losartan showed the highest renoprotective effect, saving 44% and 77% of ERPF at 3 and 21 days after UUO, respectively. Losartan was also the best renoprotective agent for GFR. For renal histopathology, enalapril showed the earliest and greatest improvement as assessed by the damage score, reaching 60% at 21 days after UUO. l-Arginine was the next best effect to blockade the renin-angiotensin system for renoprotection. Conclusion We suggest that blockade of the renin-angiotensin system provides the best renoprotection against the effects of complete UUO.
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Key Words
- (U)UO, (unilateral) ureteric obstruction
- ACE inhibitors
- ACE, angiotensin-converting enzyme
- AT, angiotensin II
- Angiotensin receptor blocker
- Antioxidants
- Ccr, creatinine clearance
- ERPF, effective renal plasma flow
- ESRD, end-stage renal disease
- NF, nuclear factor
- NO, nitric oxide
- RAS, renin-angiotensin system
- RB, receptor blocker
- Renoprotection
- Unilateral ureteric obstruction
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Affiliation(s)
- Khaled I. Khalil
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Corresponding author. Tel.: +20 50 2341603.
| | - Ahmed A. Shokeir
- Department of Urology, Urology & Nephrology Center, Mansoura University, Mansoura, Egypt
| | - Ehab W. Wafa
- Department of Urology, Urology & Nephrology Center, Mansoura University, Mansoura, Egypt
| | - Gad El-Mawla A. Gad
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Soheir A. Helmy
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Eman M. Nour
- Department of Urology, Urology & Nephrology Center, Mansoura University, Mansoura, Egypt
| | - Mohamed Sarhan
- Department of Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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Abdel-Rahman F, El Taani H, Badheeb A, AlJmili M, El-Khatib H, Ahmed A, Alzabin A, Rihani R, Hussein N, Sarhan M. High-Dose Therapy And Autologous Hematopietic Progenitor Cell Transplantation For Recurrent Or Refractory Hodgkin's Lymphoma: Analysis Of King Hussein Cancer Center (KHCC) Results And Prognostic Variables. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.259] [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: 11/16/2022]
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Sarhan O, El-Dahshan K, Sarhan M. Prognostic value of serum creatinine levels in children with posterior urethral valves treated by primary valve ablation. J Pediatr Urol 2010; 6:11-4. [PMID: 19581129 DOI: 10.1016/j.jpurol.2009.05.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [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] [Received: 03/28/2009] [Accepted: 05/29/2009] [Indexed: 10/20/2022]
Abstract
PURPOSE We evaluated the prognostic value of serum creatinine level at presentation and nadir creatinine during follow up for future renal function (RF) in children with posterior urethral valves (PUV). MATERIALS AND METHODS Between 1987 and 2004, 120 cases of PUV were treated initially at our hospital with valve ablation. Initial assessment included serum creatinine measurement, urine analysis and culture, renal ultrasonography and voiding cystourethrography. After valve ablation, renal ultrasound and serum creatinine measurement were repeated and thereafter during visits until the end of follow up. RESULTS Follow up ranged from 2 to 12 years (mean=4.4). Renal insufficiency (RI) developed at the end of follow up in 44 patients (36.5%). The mean initial and nadir serum creatinine in the RI group was higher than in the normal RF group (P<0.05). With a cut-off value of 1mg/dl for initial and nadir serum creatinine, the incidence of RI was significantly different (P<0.05). CONCLUSION Our data confirm the high prognostic value of nadir serum creatinine after relief of valvular obstruction. Further, the serum creatinine level before valve ablation correlates significantly with long-term RF in children with PUV.
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Affiliation(s)
- Osama Sarhan
- Urology and Nephrology Center, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
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Helmy T, Sarhan O, Sarhan M, El-Baz M, Dawaba M, Ghali A. Renal cell carcinoma in children: single-center experience. J Pediatr Surg 2009; 44:1750-3. [PMID: 19735820 DOI: 10.1016/j.jpedsurg.2009.02.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [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] [Received: 09/06/2008] [Revised: 02/13/2009] [Accepted: 02/13/2009] [Indexed: 11/25/2022]
Abstract
PURPOSE The aim of the study was to report the experience with renal cell carcinoma (RCC) in children. MATERIALS AND METHODS We conducted a retrospective study on renal adenocarcinoma cases treated in our center between 1993 and 2008. The age limit was established at 15 years. We collected data on personal history, diagnostic age, sex, clinical presentation, tumor laterality, diagnostic procedure, and tumor stage according to TNM classification proposed by the International Union Against Cancer (2002), surgical technique, pathologic subtype, and outcome. RESULTS Six children were included in this study (4 girls and 2 boys) with a mean age of 9.5 years (range, 4-14 years). Tumor affected the right side in 4 patients and the left side in 2. Follow-up ranged from 9 to 140 months (mean, 85). Two patients were diagnosed as stage T1aN0M0, another was T1bN2M0, and 2 were T2N0M0, whereas the last one was T3N2M0. Radical nephrectomy was performed in 5 patients, whereas partial nephrectomy was adopted in one patient. The most common histologic subtype was translocation morphology RCC. One patient had local recurrence, whereas the other 5 are currently disease-free. CONCLUSION Renal cell carcinoma is a rare histologic type of tumor in children, with certain features that differ from those in adults. In general, RCC in children tends to present later than Wilms' tumor and is usually associated with signs and/or symptoms of disease. In localized cases, the treatment of choice is radical nephrectomy.
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Affiliation(s)
- Tamer Helmy
- Faculty of Medicine, Urology and Nephrology Center, Mansoura University, Mansoura 35516, Egypt
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Boyle P, Anderson B, Andersson L, Ariyaratne Y, Auleley GR, Barbacid M, Bartelink H, Baselga J, Behbehani K, Belardelli F, Berns A, Bishop J, Brawley O, Burns H, Clanton M, Cox B, Currow D, Dangou JM, de Valeriola D, Dinshaw K, Eggermont A, Fitzpatrick J, Forstmane M, Garaci E, Gavin A, Kakizoe T, Kasler M, Keita N, Kerr D, Khayat D, Khleif S, Khuhaprema T, Knezevic T, Kubinova R, Mallath M, Martin-Moreno J, McCance D, McVie J, Merriman A, Ngoma T, Nowacki M, Orgelbrand J, Park JG, Pierotti M, Ashton L, Puska P, Escobar C, Rajan B, Rajkumar T, Ringborg U, Robertson C, Rodger A, Roovali L, Santini L, Sarhan M, Seffrin J, Semiglazov V, Shrestha B, Soo K, Stamenic V, Tamblyn C, Thomas R, Tuncer M, Tursz T, Vaitkiene R, Vallejos C, Veronesi U, Wojtyla A, Yach D, Yoo KY, Zatonski W, Zaridze D, Zeng YX, Zhao P, Zheng T. Need for global action for cancer control. Ann Oncol 2008; 19:1519-21. [DOI: 10.1093/annonc/mdn426] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Refaie HD, Sarhan M, Hafez A. Role of CT in assessment of unresectable Wilms' tumor response after preoperative chemotherapy in pediatrics. ScientificWorldJournal 2008; 8:661-9. [PMID: 18661054 PMCID: PMC5848620 DOI: 10.1100/tsw.2008.96] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The purpose of this study was to define the structural response of unresectable Wilms' tumor following preoperative chemotherapy by computed tomography (CT). We also compared CT changes in relation to histopathological nature. The study included 36 patients with 41 nephroblastomas. All were examined by CT before preoperative chemotherapy using multiphasic CT protocol study. The unresectability was diagnosed by CT imaging. All patients were subjected to fine-needle biopsy (FNB) to confirm the diagnosis and to define the histopathological type before preoperative chemotherapy. Five patients had unfavorable pathology and 31 patients with 36 nephroblastomas had favorable pathology. All patients received first line of treatment. Follow-up of these patients by CT at the 6th week was reviewed. All of our patients were diagnosed as unresectable Wilms' tumor by CT. Preoperative chemotherapy was started. Among our patients, 28 (77.8%) gave good response in the form of significant reduction in tumor size, disappearance of one tumor in two cases with bilateral WT and inferior vena cava (IVC) thrombus, and increased nonenhancing necrotizing content. Two patients with unfavorable pathology did not show any response. The remaining six patients gave partial response. CT can be used to evaluate tumor response and resectability after preoperative chemotherapy with high accuracy. The response to preoperative chemotherapy is not related to the histopathological classifications.
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Affiliation(s)
- Huda D Refaie
- Mansoura University-Elgomhoria st, Mansoura, 35516, Egypt.
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Abstract
Generalized essential telangiectasia (GET) is a rare skin disorder characterized by generalized development of dilated venules, which start at the lower extremities and progressively spread to the rest of the body. Mucous and conjunctival involvement is rare. The diagnosis is based on clinical examination, after excluding other primary and secondary causes of telangiectasia.
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Affiliation(s)
- M M Ali
- Department of Dermatology, Eastbourne Hospital, Eastbourne, UK.
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Hafez AT, Sarhan M, Sarhan O, El-Sherbiny MT, Ghoneim MA. Chemotherapy as monotherapy for treatment of non-metastatic bladder/prostate embryonal rhabdomyosarcoma in children: preliminary report. J Pediatr Urol 2006; 2:23-30. [PMID: 18947590 DOI: 10.1016/j.jpurol.2005.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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] [Received: 05/18/2005] [Accepted: 06/30/2005] [Indexed: 11/19/2022]
Abstract
OBJECTIVE This work aims at evaluation of chemotherapy as mono-therapy for treatment of non-metastatic bladder/prostate embryonal rhabdomyosarcoma in children. PATIENTS AND METHODS Between 1996 and 2002, 10 children presented with RMS of the bladder/prostate at a mean age of 6.6 years (range 1.5-18). Four patients had stage 2 disease and 6 had stage 3. The histology was embryonal in 8 and botryoid in 2. All patients received VAC chemotherapy for a mean duration of 14 months (range 12-18). CT or MRI was performed at 8 weeks, every 3 months in the first year and every 6 months thereafter. RESULTS The mean follow-up duration was 48 months (range 12-96). At 8 weeks, 7 children showed more than 50% reduction in tumour size and the remaining 3 showed complete disappearance on CT or MRI. At final follow-up 8 patients are living, disease-free, with functioning bladder. The remaining 2 patients died of metastatic disease at 12 and 14 months from start of treatment. Out of the 8 survivors, 5 had complete disappearance of the tumour at last follow-up while 3 had residual tumour on CT/MRI. Those children underwent transurethral endoscopic resection and the pathology showed no evidence of malignancy in all. The 4-year disease-free survival was 100% for stage 2 and 66% for stage 3. CONCLUSIONS Chemotherapy as mono-therapy is effective treatment in children with stage 2 embryonal RMS of the bladder/prostate with the advantage of bladder preservation. Within stage 3, non-survivors had statistically significant larger tumours. Adjuvant therapy or more intensive chemotherapy might be required for those with large stage 3 tumours.
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Affiliation(s)
- Ashraf T Hafez
- The Urology and Nephrology Centre, Mansoura University, El-Gomhouria street, Mansoura 35516, Egypt.
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El-Bessoumy AA, Sarhan M, Mansour J. Production, Isolation, and Purification of L-Asparaginase from Pseudomonas Aeruginosa 50071 Using Solid-state Fermentation. BMB Rep 2004; 37:387-93. [PMID: 15469724 DOI: 10.5483/bmbrep.2004.37.4.387] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The L-asparaginase (E. C. 3. 5. 1. 1) enzyme was purified to homogeneity from Pseudomonas aeruginosa 50071 cells that were grown on solid-state fermentation. Different purification steps (including ammonium sulfate fractionation followed by separation on Sephadex G-100 gel filtration and CM-Sephadex C50) were applied to the crude culture filtrate to obtain a pure enzyme preparation. The enzyme was purified 106-fold and showed a final specific activity of 1900 IU/mg with a 43% yield. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of the purified enzyme revealed it was one peptide chain with M(r) of 160 kDa. A Lineweaver-Burk analysis showed a K(m) value of 0.147 mM and V(max) of 35.7 IU. The enzyme showed maximum activity at pH 9 when incubated at 37 degrees C for 30 min. The amino acid composition of the purified enzyme was also determined.
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Affiliation(s)
- Ashraf A El-Bessoumy
- Biochemistry Department, Faculty of Science, Alexandria University, Mohram Byk, Alexandria, Egypt.
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