Publications by authors named "Alhasan S"

Background And Aims: Healthcare workers in particular frequently report Work-related musculoskeletal diseases (WRMSDs). The purpose of this study is to evaluate the prevalence and features of WRMSDs in residents from different specialties and trainee nurses from educational hospitals in Damascus, Syria.

Methods: A cross-sectional survey was undertaken aiming at the medical residents and the trainee nurses working in the public health sector in 11 hospitals.

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Background: In clinical practice, females with MS often report menstrually-related symptom fluctuations. Hypothetically, use of oral contraceptives (OCs) could reduce these fluctuations, particularly continuous OCs (11+ weeks of consistent exogenous hormones followed by 1 week placebo).

Objectives: To prospectively capture (1) whether neurologic and generalized symptoms vary with menstrual cycle phase and (2) whether type of contraception impacts symptom fluctuations.

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In the last few decays, the fiber-optic was employed in the field of sensing because of its benefits in contrast to other types of sensors such as small size, easy to fabricate, high response, and flexibility. In this study, unclad single mode fiber-optic sensor is proposed to operate at 650 nm wavelength. COMSOL Multiphysics 5.

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Introduction: Heparin sulphate proteoglycans in the liver tumour microenvironment (TME) are key regulators of cell signalling, modulated by sulfatase-2 (SULF2). SULF2 overexpression occurs in hepatocellular carcinoma (HCC). Our aims were to define the nature and impact of SULF2 in the HCC TME.

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Background: Osteoporosis is a progressive decline in the bone mass, which occurs with no alterations to the bone's composition. It is associated with increased bone fragility that may eventually lead to fractures. In this study, we aim to assess the level of awareness that Syrian women possess regarding osteoporosis and spread the knowledge about its prevention measures.

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A variety of neurologic manifestations of COVID-19 infections have been reported. Here, we present a case of steroid-responsive MOG-antibody associated encephalitis, characterized by cognitive decline, headaches, fever, unilateral FLAIR-hyperintensities, and leptomeningeal enhancement, that occurred in the setting of recent COVID-19 infection.

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Introduction: Chronic kidney disease (CKD) increases the risk of venous thromboembolism (VTE) among affected patients. Vitamin K antagonists (VKA) and warfarin remains the main stay of its treatment. Due to novelty and unclear risk-to-benefit ratio of direct oral anti-coagulants (DOAC), they remain underutilized in preventing VTE among CKD patients.

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Background: Penile erection is a complex phenomenon that involves coordinated interaction of the psychologic, hormonal, nervous, arterial, venous, and sinusoidal systems. Erectile dysfunction (ED) is the persistent inability to attain or maintain penile erection sufficient for sexual intercourse. This study aims to determine the real-time morphologic vascular abnormalities in men with ED using penile Doppler sonography in Kano, Nigeria.

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Background: Pancreatic ductal adenocarcinoma (PDAC) is the fifth most common cause of cancer death in the UK. Its poor prognosis is attributed to late detection and limited therapeutic options. Expression of SULF2, an endosulfatase that modulates heparan sulfate proteoglycan 6-O-sulfation and is reportedly tumourigenic in different types of cancer, was investigated.

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Inhibitors of sulfatase-2 are putative anticancer agents, but the discovery of potent small molecules targeting this enzyme has proved challenging. Based on molecular modelling, two series of sulfatase-2 inhibitors have been developed with biphenyl and biphenyl ether scaffolds judiciously substituted with sulfamate, carboxylate and other polar groups ( amino). Inhibition of aryl sulfatase A and B was also determined.

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Regioselective sulfamoylation of primary hydroxyl groups enabled a 5-step synthesis (overall yield 17%) of the first reported small molecule inhibitor of sulfatase-1 and 2, ((2S,3R,4R,5S,6R)-4,5-dihydroxy-2-methoxy-6-((sulfamoyloxy)methyl)tetrahydro-2H-pyran-3-yl)sulfamic acid, which obviated the use of hydroxyl protecting groups and is a marked improvement on the reported 9-step synthesis (overall yield 9%) employing hazardous trifluoromethylsulfonyl azide. The sulfamoylation methodology was used to prepare a range of derivatives of 1, and inhibition data was generated for Sulf-2, ARSA and ARSB.

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Background: Methylenetetrahydrofolate reductase (MTHFR) is involved in DNA synthesis and repair. We here aimed to investigate two common polymorphisms, C677T and A1298C, with genotype and haplotype frequencies in colorectal cancer (CRC) cases among Jordanian.

Materials And Methods: 131 CRC cases were studied for MTHFR C677T and A1298C polymorphisms, compared to 117 controls taken from the general population, employing the PCR-RFLP technique.

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This study aimed to evaluate oxidative stress and apoptosis in childhood acute lymphoblastic leukemia (ALL) at diagnosis and their impact on outcome at the end of the induction phase. Our study included 50 newly diagnosed children with ALL. Evaluation of oxidative stresses (malondialdehyde and total anti-oxidant capacity) was made at diagnosis and at the end of the induction phase.

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Background: Benign prostatic hyperplasia (BPH) is the commonest disease of the urinary tract afflicting the ageing male and is the commonest neoplastic disease in men aged 50 years and above. Transurethral prostatectomy (TURP) is the ultimate treatment of choice for benign prostatic hyperplasia (BPH) due mainly to the preference of minimally invasive surgery, long term relief of symptoms and cost effectiveness. It is however not available to the majority of Nigerians in need of prostatic surgery in Public Health Institutions.

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Objectives: To evaluate the toxicity and efficacy of capecitabine and weekly docetaxel in a phase II clinical trial.

Methods: Eligibility included metastatic renal cancer with a maximum of 2 prior regimens, performance status of 0-2, and adequate renal, hepatic, and bone marrow function. Docetaxel was administered intravenously at a dose of 36 mg/m(2) weekly on days 1, 8, and 15 of a 28- day cycle and capecitabine was administered orally at a dose of 1800 mg/m(2) from days 5-18.

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Background: Traditional multiplexed gene expression methods require well preserved, intact RNA. Such specimens are difficult to acquire in clinical practice where formalin fixation is the standard procedure for processing tissue. Even when special handling methods are used to obtain frozen tissue, there may be RNA degradation; for example autopsy samples where degradation occurs both pre-mortem and during the interval between death and cryopreservation.

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Background: Mammary gigantism is a rare, cosmetically embarrassing complication of pregnancy that may ulcerate and have potentially fatal bleeding.

Methods: A case report of a 20-year old primigravida with bilateral massive breast enlargement is presented to highlight the clinical presentation and management challenges of the condition.

Results: She was treated with local debridement, bromocriptine, antibiotics and blood transfusion with good results.

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Soy isoflavone, genistein has been shown to induce growth inhibition, cell cycle arrest and apoptosis in cultured cancer cell lines derived from head and neck, breast, lung, and prostate cancers and showed antitumor activity against tumors in multiple animal models. In the present study we show that genistein inhibits the growth of MCF-7 breast cancer cell line in a dose dependent manner. The genistein induced growth inhibition is accompanied by the reduction in the number of mitotic cells and overexpression of cyclin dependent kinase inhibitor p21WAF1 leading to cell cycle arrest.

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Purpose: In our earlier series we showed that ciprofloxacin inhibits bladder tumor cell growth with concomitant S/G2M cell cycle arrest and reported an increased Bax-to-Bcl-2 ratio in cells undergoing cell death. In the current series we elucidated the molecular mechanisms by which ciprofloxacin induces apoptotic processes.

Materials And Methods: Ciprofloxacin mediated mitochondrial depolarization was detected by flow cytometry in HTB9 cells.

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Genistein (4,5,7-trihydroxyisoflavone) has been reported to induce cell cycle arrest and apoptosis in different cancer cell lines in vitro and to show antitumor activity against a variety of tumors in animal models. We have previously reported (S. A.

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The death receptor CD95 transduces apoptotic death signaling in many cell types. However, in pancreatic tumor cells CD95 mediated apoptotic machinery is blocked by unknown protein(s). We and others have recently demonstrated that actinomycin-D (ActD) treatment induces sensitization of pancreatic cancer cells as well as other cell types to CD95 mediated apoptosis.

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Genistein, a soy metabolite, is a potential chemopreventive agent against various types of cancer. There are several studies documenting molecular alterations leading to cell cycle arrest and induction of apoptosis in a variety of cancer cells; however, no studies, to date, have shown the effect of genistein in isogenic normal and malignant breast epithelial cells. In this study, we investigated whether genistein shows any differential sensitivity to normal (MCF10A and MCF12A) and malignant (MCF10CA1a and MDA-MB-231) breast epithelial cells.

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Flavopiridol is a flavone that inhibits several cyclin-dependent kinases and exhibits potent growth-inhibitory activity against a number of human tumor cell lines, both in vitro and when grown as xenografts in mice. It is presently being investigated as a novel antineoplastic agent in the primary screen conducted by the Developmental Therapeutics Program, National Cancer Institute. Because breast cancer is the most common cancer and second leading cause of cancer-related deaths in women in the United States, we investigated whether flavopiridol could be an effective agent against a series of isogenic breast- cancer cell lines having different levels of erbB-2 expression and differential invasion and metastatic characteristics.

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Epidemiological studies have shown lower incidence of breast and prostate cancers in Asian populations consuming a traditional diet rich in soy. Protection from these cancers was attributed to the isoflavones, particularly genistein and daidzein found in vivo as the major metabolites of soy isoflavones. However, the role of isoflavones in head and neck cancer is less clear.

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Epidemiological studies have shown a lower incidence of breast, prostate, and colon cancers in Asian countries, particularly China and Japan, than in the United States. It is believed that genistein, a natural tyrosine kinase inhibitor and a metabolite of soy products, may be responsible for the protection from these cancers. Genistein was shown to inhibit cell proliferation and to induce cell cycle arrest at the G2-M phase in breast, prostate, and jurkat T cell leukemia cell lines.

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