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| 1 | Escherichia coli tetracycline efflux determinants in relation to tetracycline residues in chicken显示文摘Objective:To screen for Escherichia coli(E.coli)resistant to tetracycline,followed by identification of tet efflux genes by polymerase chain reaction(PCR).In addition,detection of tetracycline residues in chicken livers and kidneys were conducted using high performance liquid chromatography-tandem quadrupole mass spectrometry(HPLC-MS-MS).Methods:Strains of E.coli were isolated from samples of chicken colon and screened for tetracycline resistance.Tetracycline genes conferring resistance(Tc^r)were detected by polymerase chain reaction(PCR).Most of the isolates were resistant to tetracycline(97.9%).Results:PCR analysis indicated that Tc^r E.coli R-plasmids contained tet(A),tet(B)and a combination of both efflux genes.None of the isolates contained other efflux tet genes tet(C,D,E and Y).High performance liquid chromatography-tandem quadrupole mass spectrometry(HPLC-MS-MS),a sensitive technique,was used to detect residues of chlortetracycline(CTC),oxytetracyeline(OTC),doxveycline(DC)in chicken livers and kidneys.The samples containing tetracycline residues were at 0.13-0.65pg/μL levels.Conclusions:Tetracycline and other antibiotics are commonly used in the poultry and meat production industry for prevention of microbial infections.Multiple antibiotic resistant bacteria in Oman have increased to alarming levels,threatening public health,domestic and may have adverse effect on environment. | Al-Bahry SN Al-Mashani BM Al-Ansari AS Elshafie AE Mahmoud IY | 2013 | Asian Pacific Journal of Tropical Medicine2013，6，9： | 4 |
| 2 | The efficacy of muhiple-dose methotrexate treatment for unruptured tubal ectopic pregnancy and conversion rate to surgery:a study on 294 cases 显示文摘 | Balci O Ozdemir S Mahmoud AS | 2010 | Fertil Steril2010，93，7： | 1 |
| 3 | Recurrenthead and 2 neck chemodectomas : comparison of surgical and radiotherapeut results 显示文摘 | Elshaikh MA Mahmoud AS Kinney SE | 2002 | Int J Radiat Oncol Biol Phys2002，52，4： | 1 |
| 4 | Co-Application of Corticosterone and Growth Hormone Upregulates NR2B Protein and Increases the NR2B: NR2A Ratio and Synaptic Transmission in the Hippocampus显示文摘 | Mahmoud GS Amer AS | 2014 | Sultan Qaboos Univ Med J2014，14，4： | 1 |
| 5 | Norepinephrine supplemented with dobutamine or epinephrine for the cardiovascular support of patients with septic shock显示文摘 | Mahmoud KM Ammar AS | | 0，，02： | 1 |
| 6 | The efficacy of multiple-dose Methotrexate treatment for unruptured tubal ectopic pregnancy and conversion rate to surgery:a study on 294 cases显示文摘 | Balci O Ozdemir S Mahmoud AS | 2010 | Fertil Steril2010，93，7： | 1 |
| 7 | The effect of propolis on dentinal hypersensitivity and level of satisfaction among patients from a university hospital Riyadh, Saudi Arahia 显示文摘 | Mahmoud AS Aloas K Dahlan AA | 1999 | Indian J Dent Res1999，10，4： | 1 |
| 8 | Desflurane or sevoflurane for gynaecological day-case an aesthesia with spontaneous respiration7显示文摘 | Mahmoud NA Rose DJA Laiarence AS | 2001 | Anaesthesia2001，56，2： | 1 |
| 9 | A comparison between two different alveolar recruitment maneuvers in patients with acute respiratory distress syndrome显示文摘 | Mahmoud KM Ammar AS | 2011 | Int J Crit Illn Inj Sci2011，1，2： | 1 |
| 10 | HIV vaccine research:the way forward显示文摘 | Fauci AS Johnston MI Dieffenbach CW Burton DR Hammer SM Hoxie JA Martin M Overbaugh J Watkins DI Mahmoud A Greene WC | 2008 | Science2008，321，5888： | 1 |
| 11 | Effect of adding dexamethasone to bupivaeaine on transversus abdominis plane block for abdominal hysterectomy : a prospective randomized controlled trial 显示文摘 | Ammar AS Mahmoud KM | 2012 | Saudi J Anaesth2012，6，7： | 1 |
| 12 | Diagnosis and man- agement of intra-abdominal, mislocated intrauterine devices 显示文摘 | Balci O Mahmoud AS Capar M | 2010 | Arch Gynecol Obstet2010，281，6： | 1 |
| 13 | Diagnostic value of platelet indices in children with leukemia显示文摘 | Alsweedan SA Al-Shurman A Mahmoud AS | | 0，，12： | 1 |
| 14 | Ultrasound-guided single injec- tion infraclavicular brachial plexus block using bupivacaine a- lone or combined with dexmedetomidine for pain control in upper limb surgery: A prospective randomized controlled trial 显示文摘 | Ammar AS Mahmoud KM | 2012 | SaudiJ Anaesth2012，6，2： | 1 |
| 15 | Tumor distribution and survival in six patients with brain metastases from cervical carcinoma显示文摘 | Mahmoud - Ahmed AS Suh JH Barnett GH | 2001 | Gynecol Oncol2001，81，： | 1 |
| 16 | Norepinephrine supplemented with dobutamine or epinephrine for the cardiovascular support of patients with septic shock显示文摘 | Mahmoud KM Ammar AS | 2012 | Indian J Crit Care Med2012，16，： | 1 |
| 17 | Management and outcomes of adnexal torsion:a 5-year experience显示文摘 | Balci O Icen MS Mahmoud AS | 2011 | Arch Gynecol Obstet2011，284，3： | 1 |
| 18 | Ultrasound-guided single injection in-fraclavicula brachial plexus block using bupivacaine alone orcombined with dexmedetomidine for pain control in upper limbsurgery: A prospective randomized controlled trial 显示文摘 | Alnmar AS Mahmoud KM | 2012 | Saudi JAnaesth2012，6，2： | 1 |
| 19 | Increased serum levels of interleukin-18 in patients with diabetic nephropathy显示文摘 | Mahmoud RA el-Ezz SA Hegazy AS | 2004 | Ital J Biochem2004，53，2： | 1 |
| 20 | Diagnostic valueof platelet indices in children with leukemia显示文摘 | Alsweedan SA AL-Shurman A Mahmoud AS | 2008 | J Pediatr Hema- tol Oncol2008，30，12： | 1 |
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