1.A study of in vitro antibacterial activity of lanthanides complexes with a tetradentate Schiff base ligand
Taha Ahmed Ziyad ; Ajlouni Mahmoud Abdulaziz ; Zouby Al Muaz
Asian Pacific Journal of Tropical Biomedicine 2013;(5):367-370
Objective: To establish the antibacterial activity of lanthanides complexes with a tetradentate Schiff base ligand L. Methods: (N, N'-bis (1-naphthaldimine)-o-phenylenediamine) was prepared from the condensation of 2-hydroxy-1-naphthaldehyde with o-phenylenediamine in a molar ratio of 2:1. The antimicrobial activity of the resultant Ln (III) complexes was investigated using agar well diffusion and micro-broth dilution techniques; the latter was used to establish the minimum inhibitory concentrations for each compound investigated. Results: Most of Ln (III) complexes were found to exhibit antibacterial activities against a number of pathogenic bacteria with MICs ranging between 1.95-250.00 μg/mL. Staphylococcus aureus was the most susceptible bacterial species to [LaL(NO3)2(H2O)](NO3) complex while Shigella dysenteriae andEscherichia coli required a relatively higher MIC (250 μg/mL). The complexes La (III) and Pr (III) were effective inhibitors against Staphylococcus aureus, whereas Sm (III) complex was effective against Serratia marcescens. On the other hand, Gd (III), La (III) and Nd (III) were found to be more potent inhibitors against Pseudomonas aeruginosa than two of commonly used antibiotics. The remaining Ln (III) complexes showed no remarkable activity as compared to the two standard drugs used. Conclusions: Tetradentate Schiff base ligand L and its complexes could be a potential antibacterial compounds after further investigation.
2.Review of Heterotopic Thyroid Autotransplantation.
Clinical and Experimental Otorhinolaryngology 2017;10(4):289-295
Total thyroidectomy is increasingly accepted for the management of bilateral benign thyroid disorders. Postoperatively, patients require lifelong levothyroxine replacement therapy to avoid postoperative hypothyroidism, which besides the burden of compliance, has been proven to be associated with several long-term side effects. Heterotopic thyroid autotransplantation was proposed several decades ago to avoid the need for life-long postoperative replacement therapy with maintaining the autoregulatory mechanism of thyroxin production inside the body according to its needs. Available data regarding this topic in literature is relatively poor. Before applying thyroid autotransplantation on humans, several studies have been done on animals, where the autologous transplantations were found to be successful in almost all the cases, proved by follow up postoperative 8-week measurements of thyroid hormones and histopathological examination of the removed autografts. Regarding the clinical application, few trials have been done using cryopreserved in vivo, in vitro or immediately autotransplanted thyroid autografts. Satisfactory results were obtained, however, the number of these studies and the number of patients per each study was very low. Besides the study methodologies were not so consistent.
Animals
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Autografts*
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Compliance
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Follow-Up Studies
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Humans
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Hypothyroidism
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In Vitro Techniques
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Thyroid Gland*
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Thyroid Hormones
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Thyroidectomy
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Thyroxine
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Transplantation, Autologous*
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Transplantation, Heterotopic
3.Molecular study on methicillin-resistant Staphylococcus aureus strains isolated from dogs and associated personnel in Jordan
Tarazi Hamadeh Yaser ; Almajali Mahmoud Ahmed ; Ahmed Shawket Humam ; Jaran Saleem Adnan
Asian Pacific Journal of Tropical Biomedicine 2015;(11):855-860
Objective:To determine the prevalence, genetic relatedness, and pattern of antimicrobial susceptibility in methicillin-resistant Staphylococcus aureus (S. aureus) (MRSA) isolated from household dogs, farm dogs, and stray dogs, compared to isolates from their associated personnel.
Methods: MRSA was isolated from 250 nasal swabs (150 swabs from dogs and 100 swabs from humans). PCR assays were used to detect the presence of both the nuc and mecA genes, which confirmed the identity of S. aureus isolates and the presence of methicillin resistance, respectively. Disk diffusion was used to determine the antibiotic susceptibility against 15 antimicrobial agents along with an E-test that determined the minimum inhibitory concentration for oxacillin. Pulsed field gel electrophoresis was conducted to determine the genetic relatedness of MRSA isolates from dogs to those from associated and unassociated personnel.
Results:The prevalence of S. aureus in dogs and humans was 12.7%and 10.0%respectively, while the prevalence of MRSA isolates in dogs and humans was 5.3%and 5.0%, respectively. The prevalence of MRSA isolates in household dogs, farm dogs, and stray dogs was 7.8%, 4.7%, and 0.0%, respectively. MRSA isolates demonstrated a significantly higher rate of multi-resistance against three or more antimicrobial agents than methicillin-susceptible S. aureus (MSSA). Trimethoprim-sulphamethoxazole and chloramphenicol were the most effective antibiotics against all MRSA isolates. Pulsed field gel electrophoresis revealed a strong association between dog MRSA isolates and MRSA isolates from strongly associated personnel. Conclusions:MRSA is prevalent in house dogs, as well as in dog rearing centers and among their strongly associated personnel. A strong association was found between the MRSA isolates from dogs and those from humans who are in close contact. In addition, MRSA isolates showed a high rate of multi-resistance compared to MSSA isolates.
4.Molecular mechanisms of the anti-obesity potential effect of Moringa oleifera in the experimental model
Metwally Mohamed Fateheya ; Rashad Mohamed Hend ; Ahmed Hamdy Hanaa ; Mahmoud Ahmed Asmaa ; Abdalla Mohamed Aboelfetoh
Asian Pacific Journal of Tropical Biomedicine 2017;7(3):214-221
Objective: To elucidate the molecular mechanisms of the potent anti-obesity effect of Moringa oleifera Lam. (M. oleifera) ethanolic extract and to clarify the link between these mechanisms and the associated metabolic and vascular risks in the experimental model of visceral obesity. Methods: M. oleifera ethanolic extract was orally administered at 600 mg/kg body weight in obese female rats daily for 12 weeks. At the end of treatment, body weight was deter-mined, and the atherogenic index, coronary artery index, glucose level, insulin resistance status, liver and kidney functions were assessed. Also, the mRNA of leptin, adiponectin and resistin in visceral adipose tissue was determined by quantitative real time-PCR. Results: The results showed that M. oleifera extract down-regulated mRNA expression of leptin and resistin, while it up-regulated adiponectin gene expression in obese rats relative to untreated obese control counterparts. This amelioration of genes expression was paralleled by a reduction in body weight and improvement of the atherogenic index and coronary artery index, as well as glucose level and insulin resistance value without adverse effects on liver or kidney functions, versus the untreated obese control ones. Conclusions: It is reasonable to assume that the anti-obesity, anti-atherogenic and anti-diabetic properties of M. oleifera are mechanistically achieved via working directly on the adipokines of the visceral adipose tissue. Therefore, M. oleifera may be a good thera-peutic candidate for the symptoms of metabolic syndrome.
5.Sepsis patient evaluation emergency department (SPEED) score & mortality in emergency department sepsis (MEDS) score in predicting 28-day mortality of emergency sepsis patients
Elbaih Hamed ADEL ; Elsayed Mohammed ZAYNAB ; Ahmed Mahmoud RASHA ; Abd-elwahed Ahmed SARA
Chinese Journal of Traumatology 2019;22(6):316-322
Purpose:Sepsis is a common acute life-threatening condition that emergency physicians routinely face.Diagnostic options within the Emergency Department (ED) are limited due to lack of infrastructure,consequently limiting the use of invasive hemodynamic monitoring or imaging tests.The mortality rate due to sepsis can be assessed via multiple scoring systems,for example,mortality in emergency department sepsis (MEDS) score and sepsis patient evaluation in the emergency department (SPEED) score,both of which quantify the variation of mortality rates according to clinical findings,laboratory data,or therapeutic interventions.This study aims to improve the management processes of sepsis patients by comparing SPEED score and MEDS score for predicting the 28-day mortality in cases of emergency sepsis.Methods:The study is a cross-sectional,prospective study including 61 sepsis patients in ED in Suez Canal University Hospital,Egypt,from August 2017 to June 2018.Patients were selected by two steps:(1) suspected septic patients presenting with at least one of the following abnormal clinical findings:(a) body temperature higher than 38℃ or lower than 36℃,(b) heart rate higher than 90 beats/min,(c) hyperventilation evidenced by respiratory rate higher than 20 breaths/min or PaCO2 lower than 32 mmHg,and (d) white blood cell count higher than 12,000/μL or lower than 4000/μL;(2) confirmed septic patients with at least a 2-point increase from the baseline total sequential organ failure assessment (SOFA) score following infection.Other inclusion criteria included adult patients with an age ≥18 years regardless of gender and those who had either systemic inflammatory response syndrome or suspected/confirmed infection.Patients were shortly follow-up for the 28-day mortality.Each patient was subject to SPEED score and MEDS score and then the results were compared to detect which of them was more effective in predicting outcome.The receiver operating characteristic curves were also done for MEDS and SPEED scores.Results:Among the 61 patients,41 died with the mortality rate of 67.2%.The mortality rate increased with a higher SPEED and MEDS scores.Both SPEED and MEDS scores revealed significant difference between the survivors and nonsurvivors (p =0.004 and p < 0.001,respectively),indicating that both the two systems are effective in predicting the 28-day mortality of sepsis patients.Thereafter,the receiver operating characteristic curves were plotted,which showed that SPEED was better than the MEDS score when applied to the complete study population with an area under the curve being 0.87 (0.788-0.963) as compared with 0.75 (0.634-0.876) for MEDS.Logistic regression analysis revealed that the best fitting predictor of 28-day mortality for sepsis patients was the SPEED scoring system.For every one unit increase in SPEED score,the odds of 28-day mortality increased by 37%.Conclusion:SPEED score is more useful and accurate than MEDS score in predicting the 28-day mortality among sepsis patients.Therefore SPEED rather than MEDS should be more widely used in the ED for sepsis patients.
6.Intravenous Injection of Tranexamic Acid in Patients with Pelvic Fractures: A Prospective Randomized Trial
Mahmoud FAHMY ; Mahmoud Abdel KARIM ; Ahmed Hazem ABDELAZEEM ; Ahmed Magdy ABDELRAZEK
Hip & Pelvis 2025;37(1):64-71
Purpose:
The purpose of the study is to examine the efficacy of intravenous injections of tranexamic acid (TXA) in reducing perioperative blood loss in patients scheduled for open reduction and internal fixation for pelvic fractures (Tile B and C). A study population with greater homogeneity was selected to minimize confounding variables related to fracture and fixation methods that may reflect an accurate result.
Materials and Methods:
A prospective randomized controlled trial including 100 patients who received either 15 mg/kg of TXA added to 40 mL saline twice separated by 3 hours interval or a similar volume of normal saline (~50 mL twice in same manner) intravenously. Measurement of hemoglobin was performed preoperatively and postoperatively. Blood loss in drain, blood units transfused, and complications were recorded.
Results:
The mean decrease in hematocrit levels (preoperatively and postoperatively) was 3.2% in the trial group versus 3.7% in the control group (P>0.05). Mean total blood loss was 1,106 and 1,340 mL (trial vs. control group [P<0.05]). The mean operative time was 122.5 and 130.3 minutes (trial vs. control group [P>0.05]). Mean collected blood from the drain was 155 and 170 mL (trial vs. control group [P>0.05]). The transfusion rate was 28% and 76% while the mean for transfused units was 0.72 and 1.1 units (trial vs. control group [P<0.05]). There were no venous thromboembolic events.
Conclusion
Intravenous injection of TXA in pelvic fractures was effective in reducing blood loss and the rates of blood transfusion. There were no associated thromboembolic complications.
7.Intravenous Injection of Tranexamic Acid in Patients with Pelvic Fractures: A Prospective Randomized Trial
Mahmoud FAHMY ; Mahmoud Abdel KARIM ; Ahmed Hazem ABDELAZEEM ; Ahmed Magdy ABDELRAZEK
Hip & Pelvis 2025;37(1):64-71
Purpose:
The purpose of the study is to examine the efficacy of intravenous injections of tranexamic acid (TXA) in reducing perioperative blood loss in patients scheduled for open reduction and internal fixation for pelvic fractures (Tile B and C). A study population with greater homogeneity was selected to minimize confounding variables related to fracture and fixation methods that may reflect an accurate result.
Materials and Methods:
A prospective randomized controlled trial including 100 patients who received either 15 mg/kg of TXA added to 40 mL saline twice separated by 3 hours interval or a similar volume of normal saline (~50 mL twice in same manner) intravenously. Measurement of hemoglobin was performed preoperatively and postoperatively. Blood loss in drain, blood units transfused, and complications were recorded.
Results:
The mean decrease in hematocrit levels (preoperatively and postoperatively) was 3.2% in the trial group versus 3.7% in the control group (P>0.05). Mean total blood loss was 1,106 and 1,340 mL (trial vs. control group [P<0.05]). The mean operative time was 122.5 and 130.3 minutes (trial vs. control group [P>0.05]). Mean collected blood from the drain was 155 and 170 mL (trial vs. control group [P>0.05]). The transfusion rate was 28% and 76% while the mean for transfused units was 0.72 and 1.1 units (trial vs. control group [P<0.05]). There were no venous thromboembolic events.
Conclusion
Intravenous injection of TXA in pelvic fractures was effective in reducing blood loss and the rates of blood transfusion. There were no associated thromboembolic complications.
8.Intravenous Injection of Tranexamic Acid in Patients with Pelvic Fractures: A Prospective Randomized Trial
Mahmoud FAHMY ; Mahmoud Abdel KARIM ; Ahmed Hazem ABDELAZEEM ; Ahmed Magdy ABDELRAZEK
Hip & Pelvis 2025;37(1):64-71
Purpose:
The purpose of the study is to examine the efficacy of intravenous injections of tranexamic acid (TXA) in reducing perioperative blood loss in patients scheduled for open reduction and internal fixation for pelvic fractures (Tile B and C). A study population with greater homogeneity was selected to minimize confounding variables related to fracture and fixation methods that may reflect an accurate result.
Materials and Methods:
A prospective randomized controlled trial including 100 patients who received either 15 mg/kg of TXA added to 40 mL saline twice separated by 3 hours interval or a similar volume of normal saline (~50 mL twice in same manner) intravenously. Measurement of hemoglobin was performed preoperatively and postoperatively. Blood loss in drain, blood units transfused, and complications were recorded.
Results:
The mean decrease in hematocrit levels (preoperatively and postoperatively) was 3.2% in the trial group versus 3.7% in the control group (P>0.05). Mean total blood loss was 1,106 and 1,340 mL (trial vs. control group [P<0.05]). The mean operative time was 122.5 and 130.3 minutes (trial vs. control group [P>0.05]). Mean collected blood from the drain was 155 and 170 mL (trial vs. control group [P>0.05]). The transfusion rate was 28% and 76% while the mean for transfused units was 0.72 and 1.1 units (trial vs. control group [P<0.05]). There were no venous thromboembolic events.
Conclusion
Intravenous injection of TXA in pelvic fractures was effective in reducing blood loss and the rates of blood transfusion. There were no associated thromboembolic complications.