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Faisham WI, Nawaz AH, Ezane AM, Zulmi W, Ibrahim S, Abdul Halim AR. Non-Operative Treatment Versus Steroid Injections in the Management of Unicameral Bone Cysts. Malays Orthop J 2011. [DOI: 10.5704/moj.1107.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Fitzgerald PB, Hoy K, Gunewardene R, Slack C, Ibrahim S, Bailey M, Daskalakis ZJ. A randomized trial of unilateral and bilateral prefrontal cortex transcranial magnetic stimulation in treatment-resistant major depression. Psychol Med 2011; 41:1187-1196. [PMID: 20925972 DOI: 10.1017/s0033291710001923] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Although several studies have reported that repetitive transcranial magnetic stimulation (rTMS) treatment has demonstrable efficacy in patients with depression, the parameters needed to optimize therapeutic efficacy remain unclear. To this end we determined the efficacy of low-frequency right rTMS to the dorsolateral prefrontal cortex (DLPFC) compared to two forms of bilateral rTMS to the DLPFC: (1) sequential low-frequency right-sided followed by high-frequency left-sided rTMS and (2) sequential low-frequency rTMS to both hemispheres. METHOD A total of 219 patients with treatment-resistant depression (TRD) were randomized to a 4-week course of rTMS applied with one of the three treatment conditions. Outcomes were assessed with standard rating scales. RESULTS Overall, slightly more than 50% of the patients achieved clinical response criteria. There was no substantial difference in response between the unilateral and bilateral treatment groups. Successful response to rTMS was predicted by a greater degree of baseline depression severity. CONCLUSIONS There is no substantial difference in efficacy between unilateral right-sided rTMS and the two forms of bilateral rTMS assessed in the study. Furthermore, our results call into question the specificity between frequency and laterality and rTMS response.
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Jarral OA, McCormack DJ, Ibrahim S, Shipolini AR. Should surgeons scrub with chlorhexidine or iodine prior to surgery? Interact Cardiovasc Thorac Surg 2011; 12:1017-21. [DOI: 10.1510/icvts.2010.259796] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Weiss H, Ibrahim S, Tiedge M. Der Atp8-Gendefekt im FVB Mausstamm erhöht die basale mitochondriale ROS Generierung in Beta-Zellen und induziert eine Betazell-Dysfunktion nach Hochfettdiät. DIABETOL STOFFWECHS 2011. [DOI: 10.1055/s-0031-1277383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Roohi SA, Samsudin OC, Shukur MH, Ibrahim S. Metastatic Adenocarcinoma to the Wrist Presenting as Carpal Tunnel Syndrome: A Report of an Unusual Cause. Malays Orthop J 2011. [DOI: 10.5704/moj.1103.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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131
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Ibrahim S, Kothapalli CR, Kang QK, Ramamurthi A. Characterization of glycidyl methacrylate - crosslinked hyaluronan hydrogel scaffolds incorporating elastogenic hyaluronan oligomers. Acta Biomater 2011; 7:653-65. [PMID: 20709199 DOI: 10.1016/j.actbio.2010.08.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 08/02/2010] [Accepted: 08/09/2010] [Indexed: 11/18/2022]
Abstract
Prior studies on two-dimensional cell cultures suggest that hyaluronic acid (HA) stimulates cell-mediated regeneration of extracellular matrix structures, specifically those containing elastin, though such biologic effects are dependent on HA fragment size. Towards being able to regenerate three-dimensional (3-D) elastic tissue constructs, the present paper studies photo-crosslinked hydrogels containing glycidyl methacrylate (GM)-derivatized bio-inert high molecular weight (HMW) HA (1 × 10(6)Da) and a bioactive HA oligomer mixture (HA-o: MW ∼0.75 kDa). The mechanical (rheology, degradation) and physical (apparent crosslinking density, swelling ratio) properties of the gels varied as a function of incorporated HA oligomer content; however, overall, the mechanics of these hydrogels were too weak for vascular applications as stand-alone materials. Upon in vivo subcutaneous implantation, only a few inflammatory cells were evident around GM-HA gels, however their number increased as HA-o content within the gels increased, and the collagen I distribution was uniform. Smooth muscle cells (SMC) were encapsulated into GM hydrogels, and calcein acetoxymethyl detection revealed that the cells were able to endure twofold the level of UV exposure used to crosslink the gels. After 21 days of culture, SMC elastin production, measured by immunofluorescence quantification, showed HA-o to increase cellular deposition of elastic matrix twofold relative to HA-o-free GM-HA gels. These results demonstrate that cell response to HA/HA-o is not altered by their methacrylation and photo-crosslinking into a hydrogel, and that HA-o incorporation into cell-encapsulating hydrogel scaffolds can be useful for enhancing their production of elastic matrix structures in a 3-D space, important for regenerating elastic tissues.
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Poller L, Ibrahim S, Keown M, Pattison A, Jespersen J. The prothrombin time/international normalized ratio (PT/INR) Line: derivation of local INR with commercial thromboplastins and coagulometers--two independent studies. J Thromb Haemost 2011; 9:140-8. [PMID: 20942851 DOI: 10.1111/j.1538-7836.2010.04109.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND The WHO scheme for prothrombin time (PT) standardization has been limited in application, because of its difficulties in implementation, particularly the need for mandatory manual PT testing and for local provision of thromboplastin international reference preparations (IRP). METHODS The value of a new simpler procedure to derive international normalized ratio (INR), the PT/INR Line, based on only five European Concerted Action on Anticoagulation (ECAA) calibrant plasmas certified by experienced centres has been assessed in two independent exercises using a range of commercial thromboplastins and coagulometers. INRs were compared with manual certified values with thromboplastin IRP from expert centres and in the second study also with INRs from local ISI calibrations. RESULTS In the first study with the PT/INR Line, 8.7% deviation from certified INRs was reduced to 1.1% with human reagents, and from 7.0% to 2.6% with rabbit reagents. In the second study, deviation was reduced from 11.2% to 0.4% with human reagents by both local ISI calibration and the PT/INR Line. With rabbit reagents, 10.4% deviation was reduced to 1.1% with both procedures; 4.9% deviation was reduced to 0.5% with bovine/combined reagents with local ISI calibrations and to 2.9% with the PT/INR Line. Mean INR dispersion was reduced with all thromboplastins and automated systems using the PT/INR Line. CONCLUSIONS The procedure using the PT/INR Line provides reliable INR derivation without the need for WHO ISI calibration across the range of locally used commercial thromboplastins and automated PT systems included in two independent international studies.
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Ibrahim S, Azeem K. Study on the relationship between skill performance and selected physical fitness variables of hand ball players. Br J Sports Med 2010. [DOI: 10.1136/bjsm.2010.078972.28.a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Mbuko I, Musa W, Ibrahim S, Sa`idu L, Abdu P, Oladele S, Kazeem H. A Retrospective Analysis of Infectious Bursal Disease Diagnosed at Poultry Unit of Ahmadu Bello University, Nigeria. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/ijps.2010.784.790] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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135
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Weiss H, Koch C, Wester-Rosenloef L, Ibrahim S, Tiedge M. Untersuchung der Auswirkung der mitochondrialen Atp8-Mutation im NOD und B6 Mausmodell auf Betazellfunktion und Diabetessuszeptibilität. DIABETOL STOFFWECHS 2010. [DOI: 10.1055/s-0030-1253988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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136
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Garg R, Hussey C, Ibrahim S. Pancreatitis associated with the use of sitagliptin and orlistat combination: a case report. Diabet Med 2010; 27:485-6. [PMID: 20536524 DOI: 10.1111/j.1464-5491.2010.02950.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abughazaleh AA, Potu RB, Ibrahim S. Short communication: The effect of substituting fish oil in dairy cow diets with docosahexaenoic acid-micro algae on milk composition and fatty acids profile. J Dairy Sci 2010; 92:6156-9. [PMID: 19923618 DOI: 10.3168/jds.2009-2400] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The effects of substituting fish oil (FO) with docosahexaenoic acid (DHA)-micro algae on milk chemical and fatty acid composition were examined in this study. Twenty-four Holstein cows in mid lactation grazing on an alfalfa-grass based pasture were divided into 4 treatment groups (6 cows/treatment) and supplemented with 7 kg/d grain mix plus 350 g of soybean oil and one of the following: 1) 150 g of FO, 2) 100 g of FO plus 50 g of algae, 3) 50 g of FO plus 100 g of algae, or 4) 150 g of algae. Cows were fed treatment diets for 3 wk, and milk samples were collected from each cow during the last 3 d of the study. Milk production (17.96, 17.56, 17.55, and 19.26 kg/d for treatment diets 1 to 4, respectively), milk fat percentages (3.17, 3.49, 3.74, and 3.43%), and milk protein percentages (3.35, 3.50, 3.71, and 3.42%) were similar between treatment diets. Concentrations (g/100 g of fatty acids) of milk cis-9 trans-11 (c9t11) conjugated linoleic acid (CLA; 3.41, 3.69, 4.47, and 4.21 for treatment diets 1 to 4, respectively) and vaccenic acid (11.80, 12.83, 13.87, and 13.53) were similar between treatment diets. Results of this study suggest that DHA-micro algae can partially or fully substitute FO in a cow's diet without any adverse effects on milk production, milk composition, or milk c9t11 CLA content. The DHA-micro algae may be used as a viable alternative for FO in cow's diet to modify rumen biohydrogenation to increase milk c9t11 CLA content.
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Ibrahim S, Nienow AW. THE EFFECT OF VISCOSITY ON PARTICLE SUSPENSION IN AN AERATED STIRRED VESSEL WITH DIFFERENT IMPELLERS AND BASES. CHEM ENG COMMUN 2009. [DOI: 10.1080/00986440903245914] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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139
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Chen G, Schmutz B, Epari D, Rathnayaka K, Ibrahim S, Schuetz MA, Pearcy MJ. A new approach for assigning bone material properties from CT images into finite element models. J Biomech 2009; 43:1011-5. [PMID: 19942221 DOI: 10.1016/j.jbiomech.2009.10.040] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 10/24/2009] [Accepted: 10/28/2009] [Indexed: 10/20/2022]
Abstract
Generation of subject-specific finite element (FE) models from computed tomography (CT) datasets is of significance for application of the FE analysis to bone structures. A great challenge that remains is the automatic assignment of bone material properties from CT Hounsfield Units into finite element models. This paper proposes a new assignment approach, in which material properties are directly assigned to each integration point. Instead of modifying the dataset of FE models, the proposed approach divides the assignment procedure into two steps: generating the data file of the image intensity of a bone in a MATLAB program and reading the file into ABAQUS via user subroutines. Its accuracy has been validated by assigning the density of a bone phantom into a FE model. The proposed approach has been applied to the FE model of a sheep tibia and its applicability tested on a variety of element types. The proposed assignment approach is simple and illustrative. It can be easily modified to fit users' situations.
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Ibrahim S, Muhammad Z, Abubakar I. O392 Knowledge, attitude and practice of family planning amongst women attending antenatal clinic in Aminu Kano Teaching Hospital, Kano. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60773-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jowett S, Bryan S, Poller L, VAN DEN Besselaar AMHP, VAN DER Meer FJM, Palareti G, Shiach C, Tripodi A, Keown M, Ibrahim S, Lowe G, Moia M, Turpie AG, Jespersen J. The cost-effectiveness of computer-assisted anticoagulant dosage: results from the European Action on Anticoagulation (EAA) multicentre study. J Thromb Haemost 2009; 7:1482-90. [PMID: 19515090 DOI: 10.1111/j.1538-7836.2009.03508.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Increased demand for oral anticoagulation has resulted in wider adoption of computer-assisted dosing in anticoagulant clinics. An economic evaluation has been performed to investigate the cost-effectiveness of computer-assisted dosing in comparison with manual dosing in patients on oral anticoagulant therapy. METHODS A trial-based cost-effectiveness analysis was conducted as part of the EAA randomized study of computer-assisted dosage vs. manual dosing. The 4.5-year multinational trial was conducted in 32 centres with 13 219 anticoagulation patients randomized to manual or computer-assisted dosage. The main outcome measures were total health care costs, clinical event rates and cost-saving per clinical event prevented by computer dosing compared with manual dosing. RESULTS Mean dosing costs per patient were lower (difference: euro47) for computer-assisted dosing, but with little difference in clinical event costs. Total overall costs were euro51 lower in the computer-assisted dosing arm. There were a larger number of clinical events in the manual dosing arm. The overall difference between trial arms was not significant (difference in clinical events, -0.003; 95% CI, -0.010-0.004) but there was a significant reduction in events with DVT/PE, suggesting computer-assisted dosage with the two study programs (dawn ac or parma 5) was at least as effective clinically as manual dosage. The cost-effectiveness analysis indicated that computer-assisted dosing is less costly than manual dosing. CONCLUSIONS Results indicate that computer-assisted dosage with the two programs (dawn ac and parma 5) is cheaper than manual dosage and is at least as effective clinically, indicating that investment in this technology represents value for money.
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Kholoussi N, Khorshed A, Soliman A, Wahab NA, Ibrahim S, Emara K, Rashed R, Mansour T. 9246 Evolution of the accelerated and blastic phases of chronic myeloid leukemia: molecular, cytogenetic, flowcytometric and electron microscopic studies. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71937-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Yates M, Kolmakova A, Ibrahim S, Zhao Y, Garcia J, Rodriguez A. Association of scavenger receptor class B, type I (SR-BI) SNPs with fertility outcomes in infertile women undergoing IVF. Fertil Steril 2009. [DOI: 10.1016/j.fertnstert.2009.07.1040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Vorreau P, Sygletos S, Parmigiani F, Hillerkuss D, Bonk R, Petropoulos P, Richardson DJ, Zarris G, Simeonidou D, Klonidis D, Tomkos I, Weerasuriya R, Ibrahim S, Ellis AD, Cotter D, Morais R, Monteiro P, Ben Ezra S, Tsadka S, Freude W, Leuthold J. Optical grooming switch with regenerative functionality for transparent interconnection of networks. OPTICS EXPRESS 2009; 17:15173-15185. [PMID: 19687996 DOI: 10.1364/oe.17.015173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We demonstrate a regenerative optical grooming switch for buffer-less interconnection of metro/access and metro/core ring networks with switching functionality in time, space and wavelength domain. Key functionalities of the router are the traffic aggregation with time-slot interchanging (TSI) functionality, the WDM-to-ODTM multiplexing and the OTDM-to-WDM demultiplexing of high-speed channel into lower bit-rate tributaries as well as multi-wavelength all-optical 2R regeneration of several higher-speed signals. BER and Q-factor measurements of different switching scenarios show excellent performance with no error floor and Q-factors above 21 dB.
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Borrero S, Lin Y, Dehlendorf C, Schwarz E, Creinin M, Nikolajski C, Ibrahim S. Differences in knowledge may contribute to racial variation in tubal sterilization rates. Contraception 2009. [DOI: 10.1016/j.contraception.2009.05.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Jönsen A, Yu X, Truedsson L, Nived O, Sturfelt G, Ibrahim S, Bengtsson A. Mitochondrial DNA polymorphisms are associated with susceptibility and phenotype of systemic lupus erythematosus. Lupus 2009; 18:309-12. [PMID: 19276298 DOI: 10.1177/0961203308097477] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The objective of this study was to investigate the possible association between mitochondrial DNA polymorphisms and systemic lupus erythematosus (SLE). A cohort from the Department of Rheumatology, Lund University Hospital, Sweden, consisting of 166 unrelated SLE patients was investigated as well as 190 unrelated healthy blood donors. Mean age at SLE diagnosis was 39 years (range 10-83) and mean follow-up time was 16 years (range 1-44). There were 87% women among the lupus patients, and the control group consisted of 98 women and 92 men from the same geographical area and with a similar age and ethnicity. The mtDNA SNP nt16189C was associated with SLE (OR = 1.98, 95% CI 1.04-3.78, P = 0.05). In addition, SNP nt13708A was associated with SLE in males (OR = 3.46, 95% CI 1.08-11.1, P = 0.04), although the number of male patients was low. Furthermore, SNP nt10398A was associated with secondary anti-phospholipid syndrome (P = 0.017, OR 8.2, 95% CI 1.1-63). In conclusion, in this study, we have for the first time investigated the possible association between SLE disease and mitochondrial DNA polymorphisms. Altogether, these novel results suggest that mtDNA polymorphisms may be associated with development of SLE and may potentially be of importance in SLE pathogenesis.
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Abdul-Rahman NR, Mohammad KF, Ibrahim S. Gigantism of the lower limb in Klippel-Trenaunay syndrome: anatomy of the lateral marginal vein. Singapore Med J 2009; 50:e223-e225. [PMID: 19551303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The Klippel-Trenaunay syndrome is a combination of venous and capillary malformations associated with soft tissue and/or bony limb hypertrophy, with or without lymphatic malformations. Although persistent foetal veins are rare, the persistence of the lateral marginal vein is a common association in this syndrome. It results in venous hypertension, which gives rise to venous varicosities, which are commonly seen in this syndrome. This is a case report of a 28-year-old man with Klippel-Trenaunay syndrome, with persistence of the lateral marginal vein, affecting his right lower limb. He was treated with an above-knee amputation. The amputated limb was dissected to demonstrate the anatomy of the lateral marginal vein. To the best of the authors' knowledge, the gross anatomy of the lateral marginal vein has not been previously reported.
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Alegbejo JO, Ameh DA, Ogala WN, Ibrahim S. Glycaemic Index Of Boiled Cocoyam And Stew. SAHEL MEDICAL JOURNAL 2009. [DOI: 10.4314/smj2.v11i3.12975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Alegbejo JO, Ameh DA, Ogala WN, Ibrahim S. Glycaemic Index Of Maize Meal With Baobab (<i>Adansonia digitata</i>) Leaf Soup In Diabetic And Healthy Subjects. SAHEL MEDICAL JOURNAL 2009. [DOI: 10.4314/smj2.v11i2.12969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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150
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Ibrahim S, Smith P, Muntaner C. A multi-group cross-lagged analyses of work stressors and health using Canadian National sample. Soc Sci Med 2009; 68:49-59. [DOI: 10.1016/j.socscimed.2008.10.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2008] [Indexed: 11/25/2022]
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