93 results on '"Salama O"'
Search Results
52. A New Lignan Glucoside from Euphrasia rostkoviana
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Salama, O., Chaudhuri, R. K., and Sticher, O.
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- 1981
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53. Iridoid Glucosides from Euphrasia rostkoviana
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Sticher, O. and Salama, O.
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- 1981
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54. Efficacy of the botanical extract (myrrh), chemical insecticides, and their combination on the cotton leafworm, Spodoptera littoralis boisd (Lepidoptera: Noctuidae)
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Farrag, R. M., Salama, O. M., and Shonouda, M. L.
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BOTANY ,COTTON leafworm ,MYRRH ,PESTICIDES - Abstract
Effects of the botanical extract (myrrh), Commiphora molmol, and thesublethal treatments of profenofos/chlorofluazuron, fenvalerate and pyriproxyfen on the larvae of S. littoralis were investigated. The results showed that myrrh induced the highest activity after 7 days of treatment with concentration of 10000 ppm and the percentage of mortality reached 44.4%. The chemical insecticide profenofos/chlorofluazuron appeared to be the most effective treatment, giving a mortality of54% after one day of treatment with a concentration of 100 ppm. Different treatments showed adverse effects on pupation, emerging adults and larval duration. The highest concentration of myrrh (10000 ppm) induced 35% pupation. No pupa was obtained with profenofos/chlorofluazuron while fenvalerate and pyriproxyfen gave 13.3% at 50 ppm. At 10000 ppm of myrrh, 25% adult was emerged, also fenvalerate and pyriproxyfen decreased the emerging moth to 13.3% at 50 ppm. For control therewas no larval mortality at 7 days and the percentages of pupation and adult emergence were 90%. Bioassays were also conducted to test thejoint action of myrrh applied in binary mixtures with each chemical insecticide on Spodoptera larvae. Results of the bioassay of mixturesindicated antagonistic effects on larval mortality. However, combination of myrrh with pro fenofos/chlorofluazuron showed additive effect. Also, the degree of pupation and emerging moth varied considerably when myrrh combined with the chemical insecticides. The present work shows the strong efficacy of the botanical extract (myrrh) which could be used alone or in combination with sublethal doses of certain insecticides to control the cotton leafworm. [ABSTRACT FROM AUTHOR]
- Published
- 2000
55. Alkaloids of Fumaria bracteosa
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Halim, A. F., Salama, O. M., and Amer, M. M. A.
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- 1986
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56. Genetic counseling and genetic testing for pathogenic germline mutations among high-risk patients previously diagnosed with breast cancer: a traceback approach.
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Abdel-Razeq H, Tamimi F, Iweir S, Sharaf B, Abdel-Razeq S, Salama O, Edaily S, Bani Hani H, Azzam K, and Abaza H
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- Humans, Female, Middle Aged, Adult, Aged, Retrospective Studies, BRCA2 Protein genetics, Young Adult, Breast Neoplasms genetics, Breast Neoplasms diagnosis, Genetic Counseling, Germ-Line Mutation, Genetic Testing methods, Genetic Predisposition to Disease, BRCA1 Protein genetics
- Abstract
Genetic counseling and testing are more accessible than ever due to reduced costs, expanding indications and public awareness. Nonetheless, many patients missed the opportunity of genetic counseling and testing due to barriers that existed at that time of their cancer diagnoses. Given the identified implications of pathogenic mutations on patients' treatment and familial outcomes, an opportunity exists to utilize a 'traceback' approach to retrospectively examine their genetic makeup and provide consequent insights to their disease and treatment. In this study, we identified living patients diagnosed with breast cancer (BC) between July 2007 and January 2022 who would have been eligible for testing, but not tested. Overall, 422 patients met the eligibility criteria, 282 were reached and invited to participate, and germline testing was performed for 238, accounting for 84.4% of those invited. The median age (range) was 39.5 (24-64) years at BC diagnosis and 49 (31-75) years at the date of testing. Genetic testing revealed that 25 (10.5%) patients had pathogenic/likely pathogenic (P/LP) variants; mostly in BRCA2 and BRCA1. We concluded that long overdue genetic referral through a traceback approach is feasible and effective to diagnose P/LP variants in patients with history of BC who had missed the opportunity of genetic testing, with potential clinical implications for patients and their relatives., (© 2024. The Author(s).)
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- 2024
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57. Antimicrobial activity of spiculisporic acid isolated from endophytic fungus Aspergillus cejpii of Hedera helix against MRSA.
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Osama S, El Sherei M, Al-Mahdy DA, Bishr M, Salama O, and Raafat MM
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- Anti-Bacterial Agents chemistry, Microbial Sensitivity Tests, Fungi, Methicillin-Resistant Staphylococcus aureus, Hedera, Anti-Infective Agents pharmacology, Aspergillus
- Abstract
The surge in multidrug-resistant pathogens worldwide has jeopardized the clinical efficiency of many current antibiotics. This problem steered many researchers in their quest to discover new effective antimicrobial agents from natural origins including plants or their residing endophytes. In this work, we aimed to identify the endophytic fungi derived from Hedera helix L. and investigate their potential antimicrobial activity. Bioguided fractionation approach was conducted to isolate the pure compounds from the most active fungal fraction. Out of a total of six different isolated endophytic fungal strains, only Aspergillus cejpii showed the highest activity against all tested microbial strains. The most active fraction was the dichloromethane/methanol fraction (DCM:MeOH), where it showed significant activity against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Serratia marcescens, Acinetobacter baumannii, Salmonella typhi, and three drug-resistant clinical isolate strains including Methicillin-resistant Staphylococcus aureus (MRSA, H1), Pseudomonas aeruginosa (PS 16), and Acinetobacter baumannii (ACT 322) using tetracyline and kanamycin as the control antibiotics. Bioguided fractionation of the active fraction led to the isolation of the γ-butenolide, spiculisporic acid. Structure elucidation was carried out using
1 H and13 C-NMR spectroscopic analysis. The compound showed good antimicrobial activities with minimum inhibitory concentration (MIC) values ranging from 3.9 to 31.25 μg/mL against all tested strains. Gas chromatography coupled to mass spectrometry (GC-MS) profiling was also carried out to identify the metabolites in the microbial crude extract. In conclusion, endophytic fungi, Aspergillus cejpii, isolated from Hedera helix L. roots showed promising antimicrobial activity which merits further in-depth investigations for potential utilization as a source of new antibiotics in the future. It can also be considered as a novel source for spiculisporic acid., (© 2024. The Author(s).)- Published
- 2024
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58. Significance of OCT3/4 and SOX2 antigens expression by leukemic blast cells in adult acute leukemia.
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Aref S, Khaled O, Menshawy NE, Azmy E, Aref M, Salama O, and Khaled N
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- Adult, Humans, Prognosis, SOXB1 Transcription Factors genetics, Leukemia, Myeloid, Acute diagnosis
- Abstract
Objective: This study aimed to address the prognostic impact of SOX2 and OCT3/4 expression on adult acute leukemia patients' outcomes., Methods: SOX2 and OCT3/4 expression by blast cells were evaluated by flow cytometry in 80 acute leukemia patients and 8 healthy controls., Results: Baseline SOX2 and OCT3/4 expression were significantly higher in both ALL (P = < 0.001, P = 0.005 respectively) and AML patients (P < 0.001, P = 0.003 respectively) as compared to control, and decline at complete remission (CR) and elevated again at relapse. High SOX2 and OCT3/4 levels were significantly correlated with the presence of adverse risk stratification parameters., Conclusion: Our findings indicated that both SOX2 and OCT3/4 could serve as biomarkers that could improve risk stratification of acute leukemia patients. Also, both SOX2 and OCT3/4 might be a therapeutic target, especially in resistant acute leukemia., (© 2024. The Author(s).)
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- 2024
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59. Survival Outcomes after Placement of Inferior Vena Cava Filters in Cancer Patients: Insights from a Comprehensive Cancer Center's Experience.
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Abdel-Razeq H, Tamimi F, Al-Jaghbeer MJ, Sharaf B, Abdel-Razeq R, Bani Issa J, Abu-Jaish H, and Salama O
- Abstract
Background: Inferior vena cava (IVC) filters serve as a vital intervention when systemic anticoagulation proves ineffective or contraindicated, particularly in the context of cancer patients. This study aimed to provide real-world insights into the outcomes of cancer patients following IVC filter placement., Patients and Methods: Cancer patients with IVC filters were retrospectively reviewed. The indications and survival outcomes following IVC filter insertion have been reported., Results: A total of 176 cancer patients with IVC filters were included in the study. The median patient age was 56 years (range: 18-88 years). Solid tumors were the most common primary cancers (n = 125, 71.0%), and the majority (n = 99, 79.2%) had the advanced-stage disease at the time of IVC insertion. The filters were inserted because of contraindications to anticoagulation (n = 99, 56.3%) or the failure of anticoagulation (n = 56, 31.8%). The median survival (range) following filter placement was only 2 (1.45-2.55) months for patients with advanced-stage solid tumors, 5 (0.62-9.38) months for patients with brain tumors, and 44 (8.59-79.41) months for those with early-stage solid tumors, p < 0.001., Conclusions: Our findings suggest that IVC filter placement offers limited benefits to patients with advanced-stage disease. The underlying tumor, stage, and life expectancy are crucial factors in the decision-making process before IVC filter insertion.
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- 2023
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60. Optimization and characterization of antileukemic L-asparaginase produced by Fusarium solani endophyte.
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Osama S, El-Sherei MM, Al-Mahdy DA, Bishr M, Salama O, and Raafat MM
- Abstract
L-asparaginase is an antileukemic enzyme that hydrolyzes L-asparagine into L-aspartic acid and ammonia, causing cell starvation and apoptosis in susceptible leukemic cell populations. Currently, L-asparaginase obtained from bacterial sources is constrained by several issues, including lesser productivity, stability, selectivity, and higher toxicity. The goal of this study is to provide fungal L-asparaginase with in-vitro effectiveness towards different human carcinomas. L-asparaginase from endophytic Fusarium solani (Gene Bank accession number MW209717) isolated from the roots of the medicinal plant Hedera helix L. was characterized and optimized experimentally for maximum L-asparaginase production in addition to evaluating its subsequent cytotoxicity towards acute monocytic leukemia and human skin fibroblast cell lines. The enzyme production was maximized using potato dextrose media (15.44 IU/ml/hr) at the 5th and 6th days of fermentation with incubation temperature 30 °C, 3% asparagine, 150-180 rpm agitation rate and a 250 ml flask. Enzyme characterization studies revealed that the enzyme maintained its thermal stability with temperatures up to 60 °C. However, its optimal activity was achieved at 35 °C. On measuring the enzymatic activity at various temperatures and different pH, maximum enzyme activity was recorded at 40 °C and pH 8 using 0.1 M asparagine concentration. Results also revealed promising cytotoxic activity against acute monocytic leukemia with IC
50 = 3.66 µg/ml and low cytotoxicity against tested normal human skin fibroblast cell line which suggested that it might have selective toxicity, and consequently it could be used as a less toxic alternative to the current formulations., (© 2023. Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2023
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61. Clinical Implication of DNMT3A and TET2 Genes Mutations in Cytogenetically Normal Acute Myeloid Leukemia.
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Aref S, Sallam N, Abd Elaziz S, Salama O, Al Ashwah S, and Ayed M
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- Adult, Humans, Nucleophosmin, Cross-Sectional Studies, Mutation, DNA (Cytosine-5-)-Methyltransferases genetics, DNA Modification Methylases genetics, Prognosis, DNA-Binding Proteins genetics, Leukemia, Myeloid, Acute drug therapy, Dioxygenases genetics
- Abstract
Background: Refining risk stratification of cytogenetically normal AML (CN-AML) cases is important for decision making and tailoring of therapy. In this context genetic and epigenetic mutations was considered. Among these epigenetic regulators are DNMT3A & TET2 genes. Therefore, the aim of this study was to determine the prevalence of DNMT3A and TET2 genes mutations and their impact on the outcome of adult AML patients., Subjects and Methods: The present study is cross sectional study which was conducted on 39 adult CN-AML patients at diagnosis. For all included patients sanger sequencing was done for DNMT3A exon 23 and TET2 exon 3 genes., Results: DNMT3A mutations were detected in 8 of 39 patients (20.5%), and in 5 of 39 patients(12.8%) in TET gene. Two CN-AML patients had combined mutations in both genes. All of the mutations detected were missense and only one was frame shift. Mutated TET2 or DNMT3A genes were significantly associated with failure of complete remission (CR) (p <0.001), higher mortality rate, shorter OS (mean=16 versus 22.7 months) and shorter DFS (mean= 9.5 versus 21.4 months) when compared to non-mutated ones., Conclusion: Mutated TET2 and DNMT3A detection define a subgroup of CN-AML patients with poor outcome.
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- 2022
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62. Potential Anticancer Activity of the Furanocoumarin Derivative Xanthotoxin Isolated from Ammi majus L. Fruits: In Vitro and In Silico Studies.
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Issa MY, Elshal MF, Fathallah N, Abdelkawy MA, Bishr M, Salama O, and Abulfadl YS
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- Computer Simulation, In Vitro Techniques, Ammi chemistry, Furocoumarins pharmacology, Methoxsalen pharmacology
- Abstract
Ammi majus L., an indigenous plant in Egypt, is widely used in traditional medicine due to its various pharmacological properties. We aimed to evaluate the anticancer properties of Ammi majus fruit methanol extract (AME) against liver cancer and to elucidate the active compound(s) and their mechanisms of action. Three fractions from AME (Hexane, CH
2 Cl2 , and EtOAc) were tested for their anticancer activities against HepG2 cell line in vitro (cytotoxicity assay, cell cycle analysis, annexin V-FITC apoptosis assay, and autophagy efflux assay) and in silico (molecular docking). Among the AME fractions, CH2 Cl2 fraction revealed the most potent cytotoxic activity. The structures of compounds isolated from the CH2 Cl2 fraction were elucidated using1 H- and13 C-NMR and found that Compound 1 (xanthotoxin) has the strongest cytotoxic activity against HepG2 cells (IC50 6.9 ± 1.07 µg/mL). Treating HepG2 cells with 6.9 µg/mL of xanthotoxin induced significant changes in the DNA-cell cycle (increases in apoptotic pre-G1 and G2/M phases and a decrease in the S-phase). Xanthotoxin induced significant increase in Annexin-V-positive HepG2 cells both at the early and late stages of apoptosis, as well as a significant decrease in autophagic flux in cancer compared with control cells. In silico analysis of xanthotoxin against the DNA-relaxing enzyme topoisomease II (PDB code: 3QX3) revealed strong interaction with the key amino acid Asp479 in a similar fashion to that of the co-crystallized inhibitor (etoposide), implying that xanthotoxin has a potential of a broad-spectrum anticancer activity. Our results indicate that xanthotoxin exhibits anticancer effects with good biocompatibility toward normal human cells. Further studies are needed to optimize its antitumor efficacy, toxicity, solubility, and pharmacokinetics.- Published
- 2022
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63. Impact of Central Nervous System International Prognostic Index on the Treatment of Diffuse Large B Cell Lymphoma.
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Ma'koseh M, Tamimi F, Abufara A, Abusalem L, Salama O, Saleh Y, Khader R, Faiyoumi BA, Al-Rwashdeh M, and Halahleh K
- Abstract
Background The central nervous system international prognostic index (CNS-IPI) is being used widely for the identification of patients with diffuse large B cell lymphoma (DLBCL) with a high risk of central nervous system (CNS) relapse. The aim of our study is to confirm the value of the CNS-IPI in predicting CNS relapse in our young study population and to evaluate its impact on the selection of patients for CNS prophylaxis. Methods We retrospectively reviewed patients diagnosed with DLBCL who were treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (RCHOP) regimen from January 2010 till December 2018. Correlation between CNS-IPI and cumulative incidence of CNS relapse and time to CNS relapse was examined through Kaplan-Meier plots. Median time to CNS relapse and median overall survival after CNS relapse were also estimated using the Kaplan-Meier plots. Results A total of 354 patients were included. The median age was 46 years. Overall, 5% of the patients developed CNS relapse. Median survival after CNS relapse was seven months. Two-year CNS relapse rates according to CNS-IPI were 0.7%, 5.1%, and 26% for low, intermediate, and high-risk, groups respectively. On multivariate analysis, poor performance status (p=0.045), involvement of two or more extranodal sites (p= 0.021), involvement of bone marrow (p= 0.029), and renal or adrenal glands (p= 0.006) significantly correlated with CNS relapse. Considering the CNS-IPI and high-risk anatomical sites (breast, uterus, testis, and epidural space), 26% of our patients with DLBCL would have needed prophylaxis. Conclusion Although CNS-IPI helps in better selection of DLBCL patients for CNS prophylaxis, it can possibly increase the number of patients exposed to unnecessary prophylaxis. More investigational biomarkers are needed to better refining high-risk patients., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2021, Ma'koseh et al.)
- Published
- 2021
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64. Assessment of Conventional Solvent Extraction vs. Supercritical Fluid Extraction of Khella ( Ammi visnaga L.) Furanochromones and Their Cytotoxicity.
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Khalil N, Bishr M, El-Degwy M, Abdelhady M, Amin M, and Salama O
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- Carbon Dioxide chemistry, Chromones pharmacology, Coumarins chemistry, Ethanol chemistry, Furans pharmacology, Hep G2 Cells, Humans, Khellin pharmacology, Khellin standards, MCF-7 Cells, Methanol chemistry, Plant Extracts pharmacology, Solvents chemistry, Ammi chemistry, Chromatography, Supercritical Fluid methods, Chromones chemistry, Furans chemistry, Plant Extracts chemistry
- Abstract
Background: Khella ( Ammi visnaga Lam.) fruits (Apiaceae) are rich in furanochromones, mainly khellin and visnagin, and are thus incorporated in several pharmaceutical products used mainly for treatment of renal stones., Methods: The objective of this study was to compare the yield of khellin and visnagin obtained using different conventional solvents and supercritical fluid extraction (SCFE) with carbon dioxide (containing 5% methanol as co-solvent). Water, acetone and ethanol (30% and 95%) were selected as conventional solvents., Results: Highest extract yield was obtained from 30% ethanol (15.44%), while SCFE gave the lowest yield (4.50%). However, the percentage of furanochromones were highest in SCFE (30.1%), and lowest in boiling water extract (5.95%). HPLC analysis of conventional solvent extracts showed other coumarins that did not appear in supercritical fluid extraction chromatogram due to non-selectivity of solvent extraction. Ammi visnaga extracts as well as standard khellin and visnagin were tested for their cytotoxic activity using sulforhodamine B assay on breast cancer (MCF-7) and hepatocellular carcinoma (Hep G2) cell lines. Results revealed a strong cytotoxic activity (IC
50 < 20 µg/mL) for the SCFE and standard compounds (khellin and visnagin) (IC50 ranging between 12.54 ± 0.57 and 17.53 ± 1.03 µg/mL). However, ethanol and acetone extracts had moderate cytotoxic activity (IC50 20-90 µg/mL) and aqueous extract had a weak activity (IC50 > 90 µg/mL)., Conclusions: Thus, supercritical fluid extraction is an efficient, relatively safe, and cheap technique that yielded a more selective purified extract with better cytotoxic activity.- Published
- 2021
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65. Effect of level of hormone-receptor expression on treatment outcomes of "triple-positive" early-stage breast cancer.
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Abdel-Razeq H, Edaily S, Iweir S, Salam M, Saleh Y, Sughayer M, Salama O, Mustafa R, Al-Masri Y, Bater R, and Taqash A
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- Female, Hormones, Humans, Middle Aged, Neoplasm Recurrence, Local drug therapy, Receptors, Estrogen genetics, Receptors, Estrogen metabolism, Treatment Outcome, Breast Neoplasms drug therapy, Breast Neoplasms genetics, Receptor, ErbB-2 genetics, Receptor, ErbB-2 metabolism, Receptors, Progesterone genetics
- Abstract
Purpose: Breast cancer that overexpresses the human epidermal growth factor receptor-2 (HER2) and both estrogen (ER) and progesterone (PR) receptors is recently recognized as a subtype (triple-positive) with distinctive behavior and response to treatment. In this study, we investigate the treatment outcomes and the beneficial effect of anti-HER2 treatment in relation to level of hormone-receptor (HR) expression., Methods: Consecutive breast cancer patients with triple-positive disease, diagnosed, treated and followed at our institution between 2006 and 2016 were enrolled. Disease-free survival (DFS) was studied in relation to the level of HR-positivity., Results: During the study period, a total of 312 were enrolled; median age (range) was 47 (20-83) years. Fifty (16.0%) of the enrolled patients received adjuvant chemotherapy without trastuzumab (cohort A). All remaining patients were treated with both chemotherapy and trastuzumab and were divided into two groups: Cohort B with both ER and PR scores ≥ 50% (n = 130, 41.7%) and Cohort C with ER and/or PR < 50% (n = 132, 42.3%). After a median follow-up of 47 months, 14 (28.0%), 30 (23.1%) and 20 (15.2%) patients in cohorts A, B, and C had an event in a form of local/system relapse or death while disease-free. The estimated 5-year DFS was 56.2%, 75.4%, and 80.8%, respectively, and at 7 year was 56.2%, 67.1%, and 78.0%, respectively (p < 0.001)., Conclusions: HER2-positive tumors are not homogeneous; stronger ER/PR co-expression may weaken the beneficial effect of anti-HER2 therapy. Such findings may have potential implication on modifying anti-HER2 treatment based on the strength of HR expression.
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- 2021
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66. Predictors of Venous Thromboembolism in Patients With Testicular Germ Cell Tumors: A Retrospective Study.
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Abdel-Razeq H, Tamimi F, Abdel-Razeq R, Salah S, Omari Z, Salama O, Abufara A, Al-Tell A, Qahoush H, Nasman A, Taqash A, Alhalaseh Y, and Bater R
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- Adolescent, Adult, Aged, Humans, Male, Middle Aged, Neoplasms, Germ Cell and Embryonal pathology, Retrospective Studies, Risk Factors, Testicular Neoplasms pathology, Young Adult, Neoplasms, Germ Cell and Embryonal etiology, Testicular Neoplasms etiology, Venous Thromboembolism complications
- Abstract
Malignancy, including testicular tumors, significantly increases the risk of venous thromboembolism (VTE). In this study, we search for predictors that may help identify subgroups of patients at higher risk of VTE. Patients with confirmed diagnosis of testicular germ cell tumor and proven VTE were identified. Clinical and pathological features possibly associated with VTE were reviewed. A total of 322 patients, median age (range) 31 (18-76) years were identified. Tumors were mostly non-seminoma (n = 194, 60.2%), node-positive (n = 130, 40.4%) and 58 (18.0%) had metastatic disease at diagnosis. Venous thromboembolism were confirmed in 27 (8.4%) patients; however, rates were significantly higher ( P < 0.001) in patients with node-positive (18.5%), metastatic disease (22.4%), and those with high lactate dehydrogenase (LDH) (21.3%). Rates were also significantly higher among those who received multiple lines of chemotherapy (27.5%) compared to those who received one line (13.8%) or none (<1.0%), P < 0.001. Patients with testicular tumors and high tumor burden, including nodal involvement, high LDH or metastatic disease, and those treated with multiple lines of chemotherapy have significantly higher rates of VTE.
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- 2021
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67. Clinical Value of NOTCH1 Mutations Detection among Chronic Lymphocytic Leukemia Patients.
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Aref S, El-Agder M, Salama O, Abouzeid T, and Sabry M
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- Adult, Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Cohort Studies, Egypt, Female, Follow-Up Studies, Humans, Leukemia, Lymphocytic, Chronic, B-Cell drug therapy, Leukemia, Lymphocytic, Chronic, B-Cell genetics, Male, Middle Aged, Prognosis, Survival Rate, Biomarkers, Tumor genetics, Leukemia, Lymphocytic, Chronic, B-Cell diagnosis, Mutation, Receptor, Notch1 genetics
- Abstract
Background: The data about the clinical impact of NOTCH1 mutations among Egyptians B - cell chronic lymphocytic patients is not previously identified. We herein, evaluate the prevalence and the prognostic significance of neurogenic locus notch homolog protein-1 (NOTCH1) mutations in B- cell lymphocytic leukemia (B-CLL)., Methods: A cohort of 105 Egyptian B-CLL patients aging from 43 to 86 years. PCR products including NOTCH1 exon 26, 27, and distal part of exon 34 expanding the sequences encoding transcription activation domain (TAD) and a peptide sequence rich in proline (P), glutamic acid (E), serine (S), threonine (T) (PEST domains) were sequenced by direct DNA Sanger sequencing., Results: NOTCH1 mutations were detected in 48/105 of patients (45.7%). Mutations in B-CLL patients are insertions (n=21), point mutations (n=18) and deletions (n=12). NOTCH1 mutations showed significant impact on prognosis of B-CLL patients as they were associated with increased bone marrow lymphocytes, more relapse and high incidence of mortality, shortened overall survival and progression free survival, and lymphocytes doubling time, when compared with NOTCH1 wild type B-CLL patients (P= 0.001; 0,005; 0.042; 0.049; 0.008; 0.049 respectively)., Conclusion: NOTCH1 mutations were considered as bad prognostic marker in B-CLL and suggested to be included in risk stratification of B-CLL patients at diagnosis.
- Published
- 2020
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68. Bactericidal activity of Myrrh extracts and two dosage forms against standard bacterial strains and multidrug-resistant clinical isolates with GC/MS profiling.
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Khalil N, Fikry S, and Salama O
- Abstract
Myrrh is the resinous exudate obtained by the incision in Commiphora molmol trees (Family Burseraceae). The bactericidal activity of its hexane extract was compared to its essential oil (MEO) using viable count technique against Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (Ps. aeruginosa). MEO exhibited a better activity with > 99.999% killing of both tested strains after 2 h contact time. MEO was tested using the same technique against four multidrug resistant isolates: S. aureus (MRSA, sputum), Escherichia coli (E. coli, urine), Ps. aeruginosa (wound) and Klebsiella pneumonia (K. pneumonia, sputum). Highest bactericidal activity was observed against Ps. aeruginosa while lowest was against K. pneumonia (99.59 and 54.04% killing, respectively after 2 h contact time). A cream and mouthwash were formulated using 5% v/v MEO. The cream showed a better activity against Ps. aeruginosa than S. aureus (95.11 and 86.76% killing, respectively after 2 h contact time). The in vitro treatment of ca 10
7 CFU/ml S. aureus cells suspended in 10% saliva with the mouthwash produced ca 46% killing within the first 15 min reaching ca 99.999% after 30 min. Cytotoxic studies of both the essential oil and hexane extract on human liver cancer (Hep G2), human breast cancer (MCF-7) and colon cancer cell lines (HCT-116) revealed a promising in vitro activity. Highest activity was recorded for the essential oil on MCF-7 with IC50 10.93 ± 0.32 μg/ml. GC/MS analysis allowed the identification of 17 and 9 compounds representing 92.01 and 99.99% of the hexane extract and essential oil, respectively. Furano-eudesma-1,3-diene (15.99%) and 2-acetoxy-furano-diene (26.82%) were the major identified compounds in the hexane extract and essential oil, respectively. These results indicate that Myrrh essential oil is a promising antibacterial and cytotoxic agent that can be formulated in suitable dosage forms.- Published
- 2020
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69. Ammi Visnaga L., a Potential Medicinal Plant: A Review.
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Khalil N, Bishr M, Desouky S, and Salama O
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- Animals, Anti-Bacterial Agents isolation & purification, Anti-Bacterial Agents pharmacology, Antifungal Agents isolation & purification, Antifungal Agents pharmacology, Antioxidants isolation & purification, Antioxidants pharmacology, Coronary Disease drug therapy, Coronary Disease physiopathology, Culicidae drug effects, Culicidae physiology, Flavonoids isolation & purification, Flavonoids pharmacology, Humans, Insecticides chemistry, Insecticides isolation & purification, Insecticides pharmacology, Larva drug effects, Larva physiology, Neuromuscular Agents isolation & purification, Neuromuscular Agents pharmacology, Oils, Volatile isolation & purification, Oils, Volatile pharmacology, Plant Extracts chemistry, Plants, Medicinal, Polyphenols isolation & purification, Polyphenols pharmacology, Renal Colic drug therapy, Renal Colic physiopathology, Ammi chemistry, Anti-Bacterial Agents chemistry, Antifungal Agents chemistry, Antioxidants chemistry, Flavonoids chemistry, Neuromuscular Agents chemistry, Oils, Volatile chemistry, Polyphenols chemistry
- Abstract
Ammi visnaga L. ( Visnaga daucoides Gaertn., Family Apiaceae), also known as Khella Baldi or toothpick weed, is an annual or biennial herb indigenous to the Mediterranean region of North Africa, Asia, and Europe. The plant is known to have been used in traditional medicine a long time ago. Nowadays, it is used in modern medicine to treat many aliments such as renal colic and coronary insufficiency, and is used as an antioxidant, antifungal, and antibacterial, with a larvicidal effect on mosquito larvae. Peer-reviewed studies show that these pharmacological activities are due its valuable chemical constituents that include mainly essential oil, polyphenolic compounds including flavonoids, as well as γ-pyrones, represented mainly by khellin and visnagin. Its essential oil is reported to have antiviral, antibacterial, and larvicidal effects, while its flavonoid content is responsible for its antioxidant activity. Its γ-pyrone content has a powerful effect on facilitating the passage of kidney stones and relieving renal colic, in addition to having a relaxant effect on smooth muscle including that of the coronary arteries. The current review represents the progress in research on A . visnaga in terms of either its chemistry or biological activities. This review represents scientific support material for the use of the plant by the pharmaceutical industry.
- Published
- 2020
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70. Significance of NOTCH1 mutations détections in T-acute lymphoblastic leukemia patients.
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Aref S, El Agdar M, Salama O, Zeid TA, and Sabry M
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- Adult, Cohort Studies, Female, Humans, Male, Neoplasm, Residual genetics, Neoplasm, Residual pathology, Prognosis, Survival Rate, Mutation, Precursor T-Cell Lymphoblastic Leukemia-Lymphoma genetics, Precursor T-Cell Lymphoblastic Leukemia-Lymphoma pathology, Receptor, Notch1 genetics
- Abstract
Background: This study aimed to determine the prevalence and clinical impact of neurogenic locus notch homolog protein 1 (NOTCH1) mutations among patients with T cell acute lymphoblastic leukemia (T-ALL)., Patient and Methods: A cohort of 60 T-ALL cases was included in this study. Sanger sequencing were done for NOTCH1 exon 26, 27, and distal part of exon 34 expanding the sequences encoding transcription activation domain (TAD) and a peptide sequence rich in proline, glutamic acid, serine, threonine (PEST) domains in all studied T ALL patients at diagnosis., Results: NOTCH1 mutations was detected in 40 out of 60 T-ALL patients (66%). Mutations in T-ALL patients are deletions (22 mutations) and point mutation (10 mutations). NOTCH1 mutations was found to have no significant impact on clinical outcome and prognosis in T-ALL including overall survival, progression free survival, relapse and mortality (P> 0.05 for all)., Conclusion: NOTCH1 mutations were frequently detected in T All patients; however, these mutations did not affect the T ALL patient's outcome. The high prevalence of NOTCH1 mutations at diagnosis could be used for detection of minimal residual disease in T ALL.
- Published
- 2020
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71. Bio-Guided Fractionation of Prenylated Benzaldehyde Derivatives as Potent Antimicrobial and Antibiofilm from Ammi majus L. Fruits-Associated Aspergillus amstelodami .
- Author
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Fathallah N, Raafat MM, Issa MY, Abdel-Aziz MM, Bishr M, Abdelkawy MA, and Salama O
- Subjects
- Biofilms drug effects, Chemical Fractionation, Escherichia coli drug effects, Microbial Sensitivity Tests, Staphylococcus aureus drug effects, Anti-Bacterial Agents chemistry, Anti-Bacterial Agents pharmacology, Anti-Infective Agents chemistry, Anti-Infective Agents pharmacology, Benzaldehydes chemistry, Benzaldehydes pharmacology
- Abstract
Ammi majus L.; Family Apiaceae; is a plant indigenous to Egypt. Its fruits contain bioactive compounds such as furanocoumarins and flavonoids of important biological activities. An endophytic fungus was isolated from the fruits and identified as Aspergillus amstelodami (MK215708) by morphology, microscopical characterization, and molecular identification. To our knowledge this is the first time an endophytic fungus has been isolated from the fruits. The antimicrobial activity of the Ammi majus ethanol fruits extract (AME) and fungal ethyl acetate extract (FEA) were investigated, where the FEA showed higher antimicrobial activity, against all the tested standard strains. Phytochemical investigation of the FEA extract yielded five prenylated benzaldehyde derivative compounds isolated for the first time from this species: Dihydroauroglaucin (1), tetrahydroauroglaucin (2), 2-(3,6-dihydroxyhepta-1,4-dien-1-yl)-3,6-dihydroxy-5-(dimethylallyl)benzaldehyde (3), isotetrahydroauroglaucin )4), and flavoglaucin (5). Structure elucidation was carried out using (1H- and 13C-NMR). Fractions and the major isolated compound 1 were evaluated for their antimicrobial and antibiofilm activity. Compound 1 showed high antimicrobial activity against Escherichia coli with minimum inhibitory concentration (MIC) = 1.95 µg/mL, Streptococcus mutans (MIC = 1.95 µg/mL), and Staphylococcus aureus (MIC = 3.9 µg/mL). It exhibited high antibiofilm activity with minimum biofilm inhibitory concentration (MBIC) = 7.81 µg/mL against Staphylococcus aureus and Escherichia coli biofilms and MBIC = 15.63 µg/mL against Streptococcus mutans and Candida albicans and moderate activity (MBIC = 31.25 µg/mL) against Pseudomonas aeruginosa biofilm. This reveals that dihydroauroglaucin, a prenylated benzaldehyde derivative, has a broad spectrum antimicrobial activity. In conclusion, it was observed that the MICs of the FEA are much lower than that of the AME against all susceptible strains, confirming that the antimicrobial activity of Ammi majus may be due to the ability of its endophytic fungi to produce effective secondary metabolites.
- Published
- 2019
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72. GC-MS and LC-MS Identification of the Phenolic Compounds Present in the ethyl Acetate Fraction Obtained from Senna tora, L. Roxb. seeds.
- Author
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Fathalla N, Bishr M, Nasser Singab A, and Salama O
- Subjects
- Acetates chemistry, Anthraquinones analysis, Chromatography, Liquid methods, Phenols chemistry, Plant Extracts chemistry, Pyrones analysis, Seeds chemistry, Solvents, Gas Chromatography-Mass Spectrometry methods, Phenols analysis, Plant Extracts analysis, Senna Plant chemistry
- Abstract
The aim of this work is to characterize the active constituents present in the ethyl acetate fraction of Senna tora , L. Roxb. seeds. Due to the fact that the main biological activity of S. tora, L seeds is attributed to its phenolic compounds which are mainly isolated from Ethyl acetate fraction, to avoid repetition of work and to save time, it was deemed necessary to confirm the identity of these phenolic compounds. This was done by GC-MS and LC-MS analysis of the ethyl acetate fraction where the structures of the isolated compounds were established on the basis of molecular ion peak and their fragmentation pattern. They were identified as Chrysophanol, Chrysarobin, 10-hydroxy-5-methoxy-2-methyl-1, 4-anthracenedione, Rubrofusarin, Parietin, Griseoxanthone-B, Isotorachrysone, and Cumbiasin B.
- Published
- 2019
- Full Text
- View/download PDF
73. Chemical profiling, biostatic and biocidal dynamics of Origanum vulgare L. essential oil.
- Author
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Fikry S, Khalil N, and Salama O
- Abstract
Origanum vulgare L. (Lamiaceae) is a widespread flavoring culinary and medicinal herb. The present study aimed at investigating the antimicrobial activity of Origanum vulgare (OV) essential oil (EO) through illustrating its biostatic, biocidal and the dynamics of the biocidal activity against 11 different microorganisms. GC/MS of OV EO allowed the identification of 32 compounds representing 99.94% of the oil. The two major identified compounds were terpinen-4-ol (38.35%) and trans-sabinene hydrate (10.06%). Different methods were employed to illustrate the biostatic activity of OV EO. Results of the biostatic studies on OV EO using agar and broth dilution methods showed that Staphylococcus aureus (S. aureus) was the most sensitive organism; with a Minimum inhibitor concentration (MIC) 1.18 mg/ml. Agar diffusion method showed that the highest activity was observed against Bordetella bronchiseptica (Br. bronchiseptica), Saccharomyces cerevisiae (S. cerevisiae), Bacillus subtilis (B. subtilus) and Staphylococcus epidermidis (S. epidermidis) with inhibition zones 38 ± 1.5, 29.5 ± 0.8, 26.9 ± 0.9 and 26.9 ± 1.1 mm, respectively. Studying the dynamics of 1% v/v OV essential oil emulsion over a period of 6 h revealed that Escherichia coli (E. coli), B. subtilis, S. epidermidis and S. cerevisiae had the fastest response. Also increasing concentrations of OV oil emulsion increased the rate of cell killing and the duration of growth lag phase increased correspondingly. These data indicated that OV EO produces a concentration and time-dependent antimicrobial activity.
- Published
- 2019
- Full Text
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74. Foliar spraying of salicylic acid induced accumulation of phenolics, increased radical scavenging activity and modified the composition of the essential oil of water stressed Thymus vulgaris L.
- Author
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Khalil N, Fekry M, Bishr M, El-Zalabani S, and Salama O
- Subjects
- Flavonoids biosynthesis, Free Radical Scavengers metabolism, Oils, Volatile metabolism, Plant Leaves metabolism, Salicylic Acid pharmacology, Thymus Plant metabolism
- Abstract
Polyphenolic compounds are considered valuable secondary plant metabolites owing to the myriad of biological activities they exert. This study aimed to investigate the effect of applying various concentrations of the plant growth regulator, salicylic acid (SA), on Thymus vulgaris L. while subjecting the plant to decreasing amounts of irrigation water. The following parameters were monitored; total polyphenolic and flavonoid content, yield and composition of the essential oil, and antioxidant activity of the alcoholic extracts. Drought alone significantly (P < 0.05) increased the polyphenolic and flavonoid content, yield of the essential oil and antioxidant activity. The total flavonoid content in control plants was 6.1 ± 0.3 mg/gm dry weight calculated in terms of rutin equivalent. However, in drought stressed plants, (irrigated at 25% of the field capacity) sprayed with 3 mM SA, the flavonoid content increased to 32.1 ± 0.1 mg/gm dry weight calculated in terms of rutin equivalent. Moreover, the total phenolic content increased from 8.5 ± 0.3 to 68.5 ± 1.2 mg/gm dry weight calculated in terms of gallic acid in the same test plants. Radical scavenging activity, using DPPH assay, was measured for the different plant treatments. A decrease from 74.4 ± 0.4 μg/ml to 36.6 ± 0.9 μg/ml of IC
50 was recorded in the drought stressed plants (25% FC) sprayed with 3 mM SA compared with the control plants. The variability in polyphenolic composition between the control plants and plants with the highest total polyphenolic content was investigated by UPLC-ESI-MS/MS. Rosmarinic acid was detected as the major component in samples from both treatments, with a higher percentage observed upon subjecting the plant to the test conditions (25% FC and sprayed with 3 mM SA). The highest yield of the essential oil (1 ± 0.06 %v/w) was obtained from drought stressed plants (25% FC) sprayed with 2 mM SA. GC/MS analysis of oil samples revealed that the Thymol content increased with drought stress, while that of p-cymene decreased. However, an increase of p-cymene was witnessed as a result of SA spraying., (Copyright © 2017. Published by Elsevier Masson SAS.)- Published
- 2018
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75. Platelet count and serum thrombopoietin level as predictors for morbidity and/or mortality in thrombocytopenic neonates.
- Author
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Al-Tonbary Y, Al-Haggar M, Salama O, Abul-Kheir M, El-Alfy A, and Hafez M
- Subjects
- Cross-Sectional Studies, Humans, Infant, Newborn, Infant, Premature blood, Morbidity, Thrombocytopenia mortality, Platelet Count, Thrombocytopenia blood, Thrombocytopenia epidemiology, Thrombopoietin blood
- Abstract
Background: Serum thrombopoietin in thrombocytopenic infants is largely related to the cause of thrombocytopenia and the underlying disease. Many perinatal factors can affect thrombopoietin level., Patients and Methods: A prospective cross-sectional study on 119 thrombocytopenic neonates: 54 full term and 65 preterm had been conducted. Thrombopoietin assay was done using a qualitative enzyme-linked immunosorbent assay technique. The test was repeated on the change of clinical status (recovery or deterioration)., Results: Lowering of thrombopoietin level was noted on reversal of platelet count to normal (P<0.001). Survival is significantly related to platelet count in full term (P = 0.04), but insignificant among thrombocytopenic preterms. Platelet count is negatively correlated to thrombopoietin level in neonates both in full term and preterm (r = -0.59, -0.69, respectively, P<0.001). Platelet count was found to be the best predictor for duration of recovery of thrombocytopenia in neonates compared with other factors including thrombopoietin level., Conclusion: Thrombocytopenic neonates had high levels of thrombopoietin. Despite the high thrombopoietin level in neonates died with severe thrombocytopenia, yet, mortality is related to the cause and outcome of thrombocytopenia rather than the serum thrombopoietin level. It is recommended to diagnose and treat the underlying cause of thrombocytopenia rather than to generalize the therapy based on thrombopoietin level.
- Published
- 2012
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76. Emulsions and rectal formulations containing myrrh essential oil for better patient compliance.
- Author
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Etman M, Amin M, Nada AH, Shams-Eldin M, and Salama O
- Abstract
Myrrh has long been used for its circulatory, disinfectant, analgesic, antirheumatic, antidiabetic, and schistosomicidal properties. Myrrh essential oil (MEO) was extracted from the oleo-gum resin of Commiphora molmol and formulated into emulsions and suppositories to mask/avoid its bitter taste. Three oil-in-water emulsions (E1-E3) were formulated and taste was evaluated by 10 volunteers. Particle size distribution was measured and correlated with excipients and the method of preparation. Physical and chemical stability testing was carried out for the optimum formulation (E2). Seven suppository formulations were investigated (F1-F7). Suppocire AML (F1) and Suppocire CM (F2) were chosen as fatty bases, and polyethylene glycol (PEG) 1500 (F3), PEG 4000 (F4), and a PEG blend (50% PEG 6000 + 30% PEG 1500 + 20% PEG 400) (F5) were chosen as water-soluble bases. A blend of PEG 1500 and Suppocire CM was also used (F7). Camphor (5%) was added to PEG 1500 (F6). Disintegration time, release rate, DSC, fracture points, and weight uniformity were evaluated. The overall average bitterness for formulations E1, E2, and E3 was 6.44, 4.15, and 3.45, respectively. Suppositories containing Suppocire AML had the fastest disintegration time (1.5 min) with dissolution efficiency (DE) of 56.8%. F3 containing PEG 1500 had a fast disintegration time of 2.5 min and maximum DE of 93.5%. The PEG blend had satisfactory release: (DE = 90.9%). A mixed fatty and water-soluble base (F7) had a disintegration time of 5 min and low DE (33.4%). A stable MEO emulsion with acceptable taste was formulated to improve patient acceptance and compliance. F3 suppositories yielded satisfactory results, while formulations containing fatsoluble bases exhibited poor release.
- Published
- 2011
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77. Camel milk as an adjuvant therapy for the treatment of type 1 diabetes: verification of a traditional ethnomedical practice.
- Author
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Mohamad RH, Zekry ZK, Al-Mehdar HA, Salama O, El-Shaieb SE, El-Basmy AA, Al-said MG, and Sharawy SM
- Subjects
- Adolescent, Adult, Albuminuria, Animals, Autoantibodies blood, Blood Glucose analysis, Body Mass Index, Glycated Hemoglobin analysis, Humans, Insulin immunology, Insulin metabolism, Insulin Secretion, Medicine, Traditional, Middle East, Young Adult, C-Peptide blood, Camelus, Diabetes Mellitus, Type 1 diet therapy, Milk
- Abstract
There is a traditional belief in the Middle East that regular consumption of camel milk may aid in prevention and control of diabetes. The aim of this work was to evaluate the efficacy of camel milk as an adjuvant therapy in young type 1 diabetics. This 16-week randomized study enrolled 54 type 1 diabetic patients (average age 20 years) selected from those attending the outpatient diabetes clinic of the Menofia University Hospital, affiliated with Egypt's National Cancer Institute. Subjects were randomly divided into two groups of 27 patients: one received usual management (diet, exercise, and insulin), whereas the other received 500 mL of camel milk daily in addition to standard management. A control group of 10 healthy subjects was also assessed. The following parameters were evaluated at baseline and at 4 and 16 weeks: hemoglobin A1c (HbA1c), human C-peptide, lipid profile, serum insulin, anti-insulin antibodies, creatinine clearance, albumin in 24-hour urine, body mass index, and Diabetes Quality of Life score. The following parameters were significantly different between the usual-management group versus the camel milk group after 16 weeks: fasting blood sugar (227.2 +/- 17.7 vs. 98.9 +/- 16.2 mg/dL), HbA1c (9.59 +/- 2.05[%] vs. 7.16 +/- 1.84[%]), serum anti-insulin antibodies (26.20 +/- 7.69 vs. 20.92 +/- 5.45 microU/mL), urinary albumin excretion (25.17 +/- 5.43 vs. 14.54 +/- 5.62 mg/dL/24 hours), daily insulin dose (48.1 +/- 6.95 vs. 23 +/- 4.05 units), and body mass index (18.43 +/- 3.59 vs. 24.3 +/- 2.95 kg/m(2)). Most notably, C-peptide levels were markedly higher in the camel milk group (0.28 +/- 0.6 vs. 2.30 +/- 0.51 pmol/mL). These results suggest that, as an adjunct to standard management, daily ingestion of camel milk can aid metabolic control in young type 1 diabetics, at least in part by boosting endogenous insulin secretion.
- Published
- 2009
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78. Toxical effect of Peganum harmala L. leaves on the cotton leaf worm, Spodoptera littoralis Boisd and its parasitoids Microplitis rufiventris Kok.
- Author
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Shonouda M, Osman S, Salama O, and Ayoub A
- Subjects
- Animals, Female, Male, Peganum anatomy & histology, Wasps pathogenicity, Peganum chemistry, Peganum toxicity, Plant Extracts chemistry, Plant Extracts toxicity, Plant Leaves chemistry, Plant Leaves toxicity, Spodoptera drug effects, Spodoptera parasitology, Wasps drug effects
- Abstract
The leaf extract and its fractions of Peganum harmala L. have shown pronounced mortal effect, decreased percent pupation and adult emergence of the cotton leaf worm, Spodoptera littoralis Boisd. The third instar larvae fed for two days on treated leaves were more susceptible to plant extract and its ethyl acetate and chloroform fractions. The active lowest concentration (5%) of the leaf fractions of P. harmala showed significant effect on the percentage of emerged adult parasitoids, Microplitis rufiventris Kok. GC/MS analysis showed the major constituent in ethyl acetate fraction was (23S) ethylcholest-5-en-3 beta-ol (28.04%) while those of chloroform fraction were hydroxyfuranocoumarin (Bergaptol) (15.68%), piperidinone (12.08%), thymol (11.82%), phosphoric acid, tributyl ester (9.80%) and trimethyl-nonenol (9.66%). The medicinal plant P. harmala could be carefully applied in integrated pest management due to its strong effect on cotton leaf worm pest.
- Published
- 2008
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79. Chemiluminescent optical fiber immunosensor for detection of autoantibodies to ovarian and breast cancer-associated antigens.
- Author
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Salama O, Herrmann S, Tziknovsky A, Piura B, Meirovich M, Trakht I, Reed B, Lobel LI, and Marks RS
- Subjects
- Adaptor Proteins, Signal Transducing immunology, Antibodies, Monoclonal, Antigens, Neoplasm blood, Autoantibodies blood, Breast Neoplasms blood, Female, Humans, Optical Fibers, Ovarian Neoplasms blood, Antigens, Neoplasm immunology, Autoantibodies analysis, Biosensing Techniques instrumentation, Breast Neoplasms immunology, Fiber Optic Technology, Luminescence, Ovarian Neoplasms immunology
- Abstract
We report herein the development of an optical fiber based chemiluminescent immunosensor for detection of the native autoimmune response to GIPC-1, a PDZ containing protein involved in regulation of G-protein signaling. The recombinant protein GIPC-1 was expressed in bacteria, purified, refolded and conjugated to the tip of an optical fiber. A human monoclonal 27.B1 IgM isolated from a breast cancer patient, which targets the GIPC-1 protein, was used for calibration of the immunosensor and was detected down to a concentration of 30 pg/ml. We determined that the fiber-optic immunosensor had a detection limit 50 times lower than chemiluminescent ELISA, and approximately 500 times lower than colorimetric ELISA. In addition, sera from 11 ovarian cancer patients, 22 breast cancer patients and asymptomatic controls were tested for the presence of IgM anti-GIPC-1 autoantibodies in their serum using the two methods. The immunosensor assay detected 54% and 77% GIPC-1 positive sera within ovarian and breast cancer patients, respectively, as compared to chemiluminescent ELISA, which only detected 18% and 27%, respectively. We envision that this immunosensor may serve as a diagnostic tool for screening women for ovarian and breast cancer at an early stage, thus increasing their chance of survival.
- Published
- 2007
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80. Craniofacial war injuries.
- Author
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Salama OM
- Subjects
- Craniocerebral Trauma diagnosis, Family Practice, First Aid methods, Hospitals, Military, Humans, Maxillofacial Injuries diagnosis, Military Personnel, Progressive Patient Care methods, Transportation of Patients, Triage methods, Wounds and Injuries diagnosis, Craniocerebral Trauma therapy, Maxillofacial Injuries therapy, Military Medicine methods, Warfare, Wounds and Injuries therapy
- Abstract
In this paper, recent concepts in the management of war wounds of the maxillofacial region are described. A brief differentiation is also given between general practice medicine and military medicine.
- Published
- 2006
81. Effect of Mirazid (Commiphora molmol) on experimental heterophyidiasis.
- Author
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Fathy FM, Salama O, and Massoud AM
- Subjects
- Animals, Dose-Response Relationship, Drug, Emulsions, Heterophyidae ultrastructure, Humans, Microscopy, Electron, Scanning, Plant Extracts adverse effects, Commiphora chemistry, Heterophyidae drug effects, Phytotherapy, Plant Extracts pharmacology, Trematode Infections drug therapy
- Abstract
Mirazid (MZ), an oleo-resin extract derived from Myrrh was reported in several experimental and clinical trails to be safe and effective against other trematodes like schistosomiasis and fascioliasis. This experimental work aimed at investigating the possible efficacy of MZ against heterophyids (Pygidiopsis genata), using praziquantel as a therapeutic control. Results showed that MZ in emulsion form is a promising drug for the treatment of heterophyidiasis, as proved by significant reduction of worm count, overt surface tegumental changes like deformity and erosion of tegumental spines observed by scanning electron microscope (SEM). The effective dose regimen was 500 mg/kg/d for 3 successive days, produced 100% reduction in worm load. The proved efficacy of the drug, together with reported low toxicity, relative to praziquantel, favours its use as a natural new alternative therapy for the treatment of human heterophyidiasis.
- Published
- 2005
82. Components, therapeutic value and uses of myrrh.
- Author
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El Ashry ES, Rashed N, Salama OM, and Saleh A
- Subjects
- Animals, Anti-Infective Agents therapeutic use, Anti-Inflammatory Agents, Non-Steroidal therapeutic use, Humans, Insecticides toxicity, Molluscacides toxicity, Resins, Plant, Commiphora chemistry, Plant Oils chemistry, Plant Oils therapeutic use
- Abstract
Occurrence, constituents and medicinal use of myrrh, obtained from the stem of different Commiphora species are reviewed. The constituents of the volatile oil, the resin and the gum are outlined in detail. Myrrh has considerable antimicrobial activity and is medicinally used in a variety of diseases.
- Published
- 2003
83. Efficacy of the botanical extract (myrrh), chemical insecticides and their combinations on the cotton leafworm, Spodoptera littoralis boisd (Lepidoptera : Noctuidae).
- Author
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Shonouda ML, Farrag RM, and Salama OM
- Subjects
- Animals, Dose-Response Relationship, Drug, Larva drug effects, Larva growth & development, Pest Control, Spodoptera growth & development, Insecticides toxicity, Plant Extracts pharmacology, Spodoptera drug effects
- Abstract
Effects of the botanical extract (myrrh), Commiphora molmol, and the sublethal treatments of profenofos/chlorofluazuron, fenvalerate and pyriproxyfen on the larvae of S. littoralis were investigated. The results showed that myrrh induced the highest activity after 7 days of treatment with concentration of 10000 ppm and the percentage of mortality reached 44.4%. The chemical insecticide profenofos/chlorofluazuron appeared to be the most effective treatment, giving a mortality of 54% after one day of treatment with a concentration of 100 ppm. Different treatments showed adverse effects on pupation, emerging adults and larval duration. The highest concentration of myrrh (10000 ppm) induced 35% pupation. No pupa was obtained with profenofos/chlorofluazuron while fenvalerate and pyriproxyfen gave 13.3% at 50 ppm. At 10000 ppm of myrrh, 25% adult was emerged, also fenvalerate and pyriproxyfen decreased the emerging moth to 13.3% at 50 ppm. For control there was no larval mortality at 7 days and the percentages of pupation and adult emergence were 90%. Bioassays were also conducted to test the joint action of myrrh applied in binary mixtures with each chemical insecticide on Spodoptera larvae. Results of the bioassay of mixtures indicated antagonistic effects on larval mortality. However, combination of myrrh with profenofos/chlorofluazuron showed additive effect. Also, the degree of pupation and emerging moth varied considerably when myrrh combined with the chemical insecticides. The present work shows the strong efficacy of the botanical extract (myrrh) which could be used alone or in combination with sublethal doses of certain insecticides to control the cotton leafworm.
- Published
- 2000
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84. A study of pattern of gastrointestinal malignant neoplasms in the last decade (1987-1996) in Alexandria.
- Author
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Khalil KA, Salama OE, El Zeiny NA, El din Khalil S, and Esmail NF
- Subjects
- Adolescent, Adult, Age Distribution, Aged, Cause of Death trends, Egypt epidemiology, Environmental Exposure adverse effects, Female, Gastrointestinal Neoplasms etiology, Gastrointestinal Neoplasms prevention & control, Health Planning, Health Services Needs and Demand, Hospitals, University, Housing trends, Humans, Male, Middle Aged, Population Surveillance, Registries, Residence Characteristics statistics & numerical data, Retrospective Studies, Risk Factors, Sanitation trends, Sex Distribution, Smoking adverse effects, Gastrointestinal Neoplasms epidemiology, Urban Health trends
- Abstract
The present study was conducted to reveal the pattern of different gastrointestinal malignant neoplasms in Alexandria in the last decade (1987-1996). All registered cases of GIT cancers in Alexandria. Main University Hospital in the last decade were included in the study. The results revealed that the total number of cases was 2184, 58.6% were males and 41.4% were females. The mean age of registered cases was significantly older among males than females (t = 2.43). The highest percentage (47.2%) of cases were in the age group (40- < 60 years). Less than quarters (73.3%) of the total cases have had malignant neoplasms of digestive organs and 26.7% have had malignant neoplasms of lips, oral cavity and pharynx. Of the latter category cancer pharynx came first in both sexes (49.9%) with the youngest mean age (45.65 +/- 15.79 years), followed by cancer tongue (24.9%) with the oldest mean age (58.56 +/- 12.4). Among cases of malignant neoplasms of digestive organs, cancer colon came first in both sexes (26.9%) with the youngest mean age (44.11 +/- 14.08 years). Cancer gall bladder came last (1.2%) with the oldest mean age (55.80 +/- 10.20 years). Over the last decade trend of malignant neoplasms of colon, rectum, liver and pancreas were increasing while the reverse was observed for cancer oesophagus and stomach. So it is necessary to plan for GIT cancer control programme.
- Published
- 1999
85. Quality assessment of medical care in chest dispensaries in Alexandria.
- Author
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Salama OE and Kishk NA
- Subjects
- Antitubercular Agents pharmacology, Community Health Centers, Egypt, Evaluation Studies as Topic, Humans, Nurses, Outcome and Process Assessment, Health Care, Program Evaluation, Public Health, Social Work, Tuberculosis epidemiology, Tuberculosis mortality, Quality Assurance, Health Care, Tuberculosis therapy
- Abstract
Eight million new cases of tuberculosis are merging annually, worldwide, of which an estimated three million are dying. The quality of medical care rendered by chest clinics (dispensaries) to tuberculous patients is crucial. The present study was conducted in order to assess quality of medical care rendered to tuberculous patients in all chest clinics in Alexandria (n=7). To achieve this aim, three checklists were developed in relation to the three dimensions of medical care, namely, structure, process of care and outcome. They were validated and rated by ten medical experts working in the field of tuberculosis and chest diseases. Accordingly for the process of care, each item was scored using weighted scores for physicians' performance. Unit weighted scoring was also used for physicians, nurses, as well as social workers. Direct observation was conducted for assessment of structure and process of care rendered by physicians, nurses and social workers. On the other hand, outcome was measured by cure or treatment completion rate, treatment failure rate, defaulter rate, as well as death rate. The results revealed that percentage of recommended structure items ranged between 77.8% and 94.4%. Regarding process of care, it was found that the overall weighted physicians' performance index (PPI) expressed in percentage was 36.97+/-13.65%, while the mean unit weighted PPI was 35.26+/-13.5%. For the different areas of care, the mean weighted and unit weighted PPI, respectively, were 27.86+/-20.83% and 28.6+/-21.7% in history taking, 54.65+/-11.92% and 42.83+/-13.83% for examination, 31.64+/-19.61% and 37.10+/-19.40% for educating patients, while it was 36.36+/-16.0% and 37.90+/-16.20% for measures applied to contacts. Moreover, assessment of nurses and social workers' performance revealed that they had carried out 91.86% and 86.60% of their recommended activities, respectively. Outcome indices among the different clinics showed that cure or treatment completion rate ranged from 47.48% to 81.51%, while treatment failure rate ranged between 1.71% and 11.54%. On the other hand, the defaulter rate showed a minimum of 13.70% and a maximum of 44.86%. From the present study it could be recommended that quality of medical care in chest clinics should be emphasized specially as regards process of care given by physicians.
- Published
- 1998
86. A study of nosocomial infection in a general hospital.
- Author
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Salama OE
- Subjects
- Adult, Age Factors, Cross Infection microbiology, Female, Gram-Negative Bacteria isolation & purification, Humans, Length of Stay, Male, Middle Aged, Risk Assessment, Risk Factors, Saudi Arabia epidemiology, Surgical Wound Infection epidemiology, Surgical Wound Infection microbiology, Cross Infection epidemiology, Hospitals, General statistics & numerical data, Infection Control, Population Surveillance
- Abstract
The present study was conducted in Hail General Hospital, in Kingdom of Saudi Arabia, over six months period starting from December 1994. All notified cases of nosocomial infections were taken into consideration. Cases who satisfied the definition and criteria of nosocomial infection were included in the study (n = 105). Data were abstracted from the special routine monthly resorts to the General Directorate of Health Affairs. The results of the present study revealed that invasive procedures were conducted for the majority of cases (81.9%). The most common site of infection was urinary tract (36.6%), followed by respiratory and wound infection (23.8% and 22.8% respectively), while other sites accounted for the remaining part of the sample (16.8%). Out of the culture positive cases (n = 101) gram negative bacteria represented 85.15% of cases where the most common ones were Klebsiella pneumonia and pseudomonas. Bivariate analysis revealed a significant linear association between invasive procedures and age (Mantel Hanszel test = 17.37). Moreover, invasive procedures were found to be significantly related to the occurrence of gram negative infection (chi2 = 4.77). Multiple regression analysis, for factors affecting length of hospital stay, showed that age and presence of host factors lowering host resistance had significant effect in prolonging the duration of stay among cases.
- Published
- 1996
87. Risk factors related to deaf-mutism among pupils attending the Alexandria governmental deaf-mute schools.
- Author
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Shazly MK, Kamel NM, Hassanein MH, Salama OE, and Nawar NM
- Subjects
- Case-Control Studies, Child, Consanguinity, Deafness epidemiology, Education, Special, Educational Status, Egypt epidemiology, Female, Fever complications, Humans, Male, Measles complications, Meningitis complications, Mutism epidemiology, Occupations, Otitis Media complications, Parents education, Parents psychology, Population Surveillance, Prevalence, Risk Factors, Sex Distribution, Surveys and Questionnaires, Tonsillitis complications, Urban Health statistics & numerical data, Deafness etiology, Mutism etiology
- Abstract
Childhood deafness interferes with the cognitive development of the child, so it is considered a major handicap. The present work was carried out to reveal possible risk factors of deaf-mutism and the magnitude of each. The case control design was chosen as a research methodology. A 50% sample of deaf-mute pupils at the primary level were selected at random from each of the two governmental schools for the deaf-mutes in Alexandria (boys=96, & girls=76). A control group chosen at random from a main stream governmental school and matched by age and sex of the pupils as well as with education and occupation of the father. Matching was carried out at the sampling phase, pairing each case to its control. Data were collected by interviewing the mothers using an interviewing schedule. Matched analysis was carried out where pairing of cases and controls was retained. The likelihood estimate of Odds ratio conditional on the number of discordant pairs was estimated using McNemer's test. The 5% level was chosen as the level of significance. The study revealed 172 deaf-mute pupils. Their mean age was 9.48+/-1.981 years. Boys outnumbered girls (55.8% and 44.2% respectively). In 59.4% parents were cousins. Deafness was first noticed at 6 to 60 months of age with a mean of 14.70+/-10.2 months. Most fathers and mothers were illiterate (48.84% and 61.63%). Heredity was a risk factor, where 84.82% of cases had a positive family history compared to none of the controls. Moreover, in case of consanguinity the Odds ratio=5.60. Acquired deafness constituted the second important group of all causes of deafness. Meningitis featured as the most important cause of acquired deafness with an estimated relative risk of 18.5, followed by fever (Odds ratio=4.67), then repeated attacks of acute tonsillitis and ear disease where the case control percent difference was 8.72% and 4.65% respectively.
- Published
- 1995
88. Thin-layer chromatographic scanner, spectrophotometric and high-performance liquid chromatographic methods for the determination of colchicine.
- Author
-
Sarg TM, el-Domiaty MM, Bishr MM, Salama OM, and el-Gindy A
- Subjects
- Chromatography, High Pressure Liquid, Chromatography, Thin Layer instrumentation, Spectrophotometry, Ultraviolet, Colchicine analysis
- Abstract
One high-performance liquid chromatographic (HPLC) and two thin-layer chromatographic (TLC) methods are proposed for the determination of colchicine in crude drugs and pharmaceutical preparations. The TLC scanner method is based on measurement of the absorbance of the separated colchicine spot; alternatively, after scraping the spot from the plate and elution the absorbance can be measured spectrophotometrically. The HPLC assay was carried out isocratically on a reversed-phase column using MeOH-H2O (60 + 40). The recoveries were 99.2 +/- 1.23, 99.1 +/- 1.12 and 99.1 +/- 2.01% for the TLC scanner, spectrophotometric and HPLC methods, respectively. The methods were shown to be sensitive and specific and can be used as an alternative to the pharmacopoeial methods having been applied to the determination of colchicine in corms of Merendera persica and in three pharmaceutical preparations.
- Published
- 1989
- Full Text
- View/download PDF
89. Use of absorbance ratios in densitometric measurements for the characterization and identification of natural products of pharmacological interest.
- Author
-
Walash MI, Salama OM, and Bishr MM
- Subjects
- Chemical Phenomena, Chemistry, Chromatography, Thin Layer, Densitometry, Pharmaceutical Preparations analysis, Spectrophotometry, Ultraviolet, Pharmaceutical Preparations isolation & purification
- Published
- 1989
- Full Text
- View/download PDF
90. [Iridoid Glucosides from Euphrasia rostkoviana].
- Author
-
Salama O and Sticher O
- Abstract
Eight iridoid glucosides have been isolated from Euphrasia rostkoviana by the combination of open column- and high performance liquid chromatography. The structure of a new compound, named eurostoside, and the identity of the others have been established by chemical transformations and spectral evidence of the compounds and their derivatives.
- Published
- 1983
- Full Text
- View/download PDF
91. Ovarian capillary blood flow in seasonally anoestrous ewes induced to ovulate by treatment with GnRH.
- Author
-
Brown BW, Cognie Y, Chemineau P, Poulin N, and Salama OA
- Subjects
- Animals, Capillaries, Female, Ovary drug effects, Regional Blood Flow drug effects, Anestrus, Estrus, Ovary blood supply, Ovulation, Pituitary Hormone-Releasing Hormones pharmacology, Sheep physiology
- Abstract
The microsphere technique was used to obtain estimates of ovarian capillary blood flow near ovulation, in 8 seasonally anoestrous ewes, which were induced to ovulate by GnRH therapy. Plasma progesterone concentrations were monitored in jugular blood sampled between Days 4 and 7 after the onset of the preovulatory LH surge. The ewes were then slaughtered. Three of the ewes were treated with a single injection of 20 mg progesterone before GnRH therapy. In these ewes and 1 other, plasma progesterone values increased after ovulation and reached 1.0 ng/ml on Day 7 following the preovulatory LH surge (normal, functional CL), whilst in the other 4 ewes progesterone concentrations increased initially then declined to 0.5 ng/ml by Day 7 (abnormal CL). In the ewes exhibiting normal luteal function, the mean ovarian capillary blood flow was significantly greater (P less than 0.01) than that for ewes having abnormal luteal function. Irrespective of the type of CL produced, capillary blood flow was significantly greater (P less than 0.05) in ovulatory ovaries than in non-ovulatory ovaries. These findings indicate that the rate of capillary blood flow in ovaries near ovulation may be a critical factor in normal development and maturation of preovulatory follicles and function of subsequently formed CL.
- Published
- 1988
- Full Text
- View/download PDF
92. 6-O-beta-D-xylopyranosylcatalpol, a new iridoid glycoside from Verbascum thapsiforme.
- Author
-
Swiatek L, Salama O, and Sticher O
- Published
- 1982
- Full Text
- View/download PDF
93. Simultaneous spectrophotometric determination of strychnine and yohimbine in pharmaceutical preparations.
- Author
-
Salama O and Belal F
- Subjects
- Solutions, Spectrophotometry, Ultraviolet, Tablets, Strychnine analysis, Yohimbine analysis
- Published
- 1986
- Full Text
- View/download PDF
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