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Ahmed M, Collins M, Garnham AW. Difficulties in repositioning of the Anaconda (Terumo, United kingdom) endovascular device system. Vasc Endovascular Surg 2010; 44:155-6. [PMID: 20089554 DOI: 10.1177/1538574409352693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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427
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Hussain AR, Khan AS, Ahmed SO, Ahmed M, Platanias LC, Al-Kuraya KS, Uddin S. Apigenin induces apoptosis via downregulation of S-phase kinase-associated protein 2-mediated induction of p27Kip1 in primary effusion lymphoma cells. Cell Prolif 2010; 43:170-83. [PMID: 20074295 DOI: 10.1111/j.1365-2184.2009.00662.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE The mechanisms that regulate mitogenic and antiapoptotic signals in primary effusion lymphoma (PEL) are not well known. In efforts to identify novel approaches to block the proliferation of PEL cells, we assessed the effect of apigenin (4',5,7-trihydroxyflavone), a flavonoid on a panel of PEL cell lines. MATERIALS AND METHODS We studied the effect of apigenin on four PEL cell lines. Apoptosis was measured by annexin V/PI dual staining and DNA laddering. Protein expression was measured by immunoblotting. RESULTS Apigenin induced apoptosis in PEL cell lines in a dose dependent manner. Such effects of apigenin appeared to result from suppression of constitutively active kinase AKT resulting in down-regulation of SKP2, hypo-phosphorylation of Rb and accumulation of p27Kip1. Apigenin treatment of PEL cells caused dephosphorylation of p-Bad protein leading to down regulation of the anti-apoptotic protein, Bcl-2 and an increase in Bax/Bcl2 ratio. Apigenin treatment also triggered Bax conformational change and subsequently translocation from cytosole to mitochondria causing loss of mitochondrial membrane potential with subsequent release of cytochrome c. Released cytochrome c onto the cytosole activated caspase-9 and caspase-3, followed by polyadenosin-5'-diphosphate-ribose polymerase (PARP) cleavage. Finally, treatment of PEL cells with apigenin down-regulated the expression of inhibitor of apoptosis protein (IAPs). CONCLUSIONS Altogether, these data suggest a novel function for apigenin, acting as a suppressor of AKT/PKB pathway in PEL cells, and raise the possibility that this agent may have a future therapeutic role in PEL and possibly other malignancies with constitutive activation of the AKT/PKB pathway.
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428
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Maruf AA, Hossain MD, Ahmed M, Samsad IA. Procedural sedation in children for magnetic resonance imaging--comparison between ketamine diazepam combination with midazolam fentanyl combination. Mymensingh Med J 2010; 19:60-65. [PMID: 20046173] [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
A deeper level of sedation by an anaesthesiologist is requirement for magnetic resonance imaging (MRI) in paediatric populations and sedation of children is different from sedation of adults. The purpose of the study was to compare the efficacy, safety, tolerability and cost effectiveness of ketamine, diazepam combination to midazolam, fentanyl combination for sedation of children during MRI. One hundred twenty children of both sex, age between 1-10 years, American Society of Anesthesiologist (ASA) physical status I and II were distributed into two groups. Group A (n=60) were sedated with 1.5 mg/kg body weight ketamine and 0.1 mg/kg body weight diazepam intravenously. Group B (n=60) were sedated with midazolam 0.05 mg/kg bodyweight and fentanyl 1 microg/kg body weight intravenously. Both groups showed satisfactory sedating condition for MRI. Incidences of side effects of drug regimens during sedation and recovery were recorded in both groups; those were transient and minor inconveniences. Pulse, blood pressure and respiration were within normal range in both groups. Mean procedure time was almost same in both groups and mean recovery time was more in group A than group B and the difference was statistically significant (p<0.05). Every child of both groups was discharged to home. Sedation regimen of group B found 5 times more costly than group A. Both the regimens were found safe and effective for paediatric sedation during MRI but ketamine, diazepam combination found more cost effective which, is a considerable matter in Bangladesh.
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Ahmed M, Dineen B, O’Brien S, Carney P. P03-159 - Sociodemographic profile and mental health needs of referrals to an Irish psychiatric service: a transcultural perspective. Eur Psychiatry 2010. [DOI: 10.1016/s0924-9338(10)71213-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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430
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Ahmed M, Alkarouri O. Iatrogenic stomach perforation complicating unrecognized posttraumatic diaphragmatic hernia (Gastro Thorax). SUDAN JOURNAL OF MEDICAL SCIENCES 2009. [DOI: 10.4314/sjms.v4i3.48327] [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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431
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Mohamed M, Omran M, Ahmed M, Khalid K, Miskeen E. Prostate Volume and PSA Cutoff Values as Predictive Indices for Success of Doxazocin Treatment in BPH in GHRDS. SUDAN JOURNAL OF MEDICAL SCIENCES 2009. [DOI: 10.4314/sjms.v4i3.48325] [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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432
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Ahmed M, Mostafa S, Fisher G, Reynolds TM. Comparison between transcutaneous bilirubinometry and total serum bilirubin measurements in preterm infants <35 weeks gestation. Ann Clin Biochem 2009; 47:72-7. [DOI: 10.1258/acb.2009.009072] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background Neonatal hyperbilirubinaemia is a common treatable cause of brain injury. The treatment for this condition is phototherapy. The decision whether to use phototherapy is currently dependent upon serum bilirubin assay results. However, repeated blood sampling is not only traumatic but may also be a cause of anaemia in neonates. We evaluated a transcutaneous bilirubin assay method to determine whether it was suitable for routine use in preterm infants. Methods One hundred and eighty-three transcutaneous bilirubin measurements were taken contemporaneously with blood samples for laboratory measurement of serum bilirubin. The study was carried out with informed parental consent and approval by the local research ethics committee. Results The transcutaneous bilirubin method (Bili Chek®) exhibited a consistent positive bias compared with the laboratory bilirubin assay. Consequently, for a given detection rate, the transcutaneous method had a higher screen positive rate, i.e. more neonates would be given phototherapy if transcutaneous bilirubin results were used to decide. There was a margin of safety in the transcutaneous bilirubin assay calibration. Conclusion The BiliChek transcutaneous bilirubin assay is a safe alternative to laboratory bilirubin assay in deciding whether to give preterm neonates phototherapy.
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433
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Pedder-Smith S, Ahmed M. MP-05.17: Time for Change? Urology 2009. [DOI: 10.1016/j.urology.2009.07.1020] [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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434
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Duleba A, Ahmed M. O239 High levels of lipoprotein(a) in women with polycystic ovary syndrome. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60611-1] [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]
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435
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Ahmed M, Stal L, Hasnain S. Comparative studies of cyanobacterial associations with crop plants. N Biotechnol 2009. [DOI: 10.1016/j.nbt.2009.06.888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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436
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Thomé GR, Mazzanti CM, Ahmed M, Corrêa M, Spanevello RM, Maldonado PA, Luchese C, Cargnelutti D, Morsch VM, Duarte MMMF, Fiorenza AM, Nogueira CW, De Bona KS, Moretto MB, Da Luz SCA, Mazzanti A, Schetinger MRC. Activity of ectonucleotidases and adenosine deaminase in rats exposed to cigarette smoke. Inhal Toxicol 2009; 21:906-12. [PMID: 19459774 DOI: 10.1080/08958370802632267] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Cigarette smoke is a complex mixture of various toxic substances that are capable of initiating oxidative damage and promoting blood platelet alterations. In this study, we investigated the activities of the ectoenzymes NTPDase (ectonucleoside triphosphate diphosphohydrolase, CD39) and 5'-nucleotidase (CD73) in platelets as well as adenosine deaminase (ADA) in the plasma of rats exposed to aged and diluted sidestream smoke during 4 weeks. The rats were divided into two groups: I (control) and II (exposed to smoke). After the exposure period, blood was collected and the platelets and plasma were separated for enzymatic assay. The results demonstrated that NTPDase (with ATP as substrate) and 5'-nucleotidase (AMP as substrate) activities were significantly higher in group II (p < 0.05) as compared to group I, while no significant difference was observed for NTPDase with ADP as substrate. The ADA activity was significantly reduced in group II (p < 0.05) as compared with group I. Platelet aggregation was significantly increased in group II (p < 0.05) as compared with group I. We suggest that these alterations in the activity of enzymes from the purinergic system are associated with an increase in platelet aggregation. However, our study has demonstrated that the organism tries to compensate for this enhanced aggregation by increasing hydrolysis of AMP and reducing hydrolysis of adenosine, a potent inhibitor of aggregation and an important modulator of vascular tone.
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437
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Ahmed M, Sohaib A, Schmidt M, Burke K, Kong C, Usher M, Davies M, Harrington K, Nutting C. THE VALUE OF MAGNETIC RESONANCE IMAGING IN TARGET VOLUME DELINEATION (TVD) OF BASE OF TONGUE (BOT) TUMOURS – A STUDY USING FLEX-L COILS. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)72694-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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438
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Ahmed M. Mystery shoppers for medics? West J Med 2009. [DOI: 10.1136/bmj.b3027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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439
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Wilke A, Nagel RT, Ahmed M, Bölte K, Fuhrmann R, Orth J, Griss P, Franke RP. Materialabhängige Differenzierung von humanen Knochenmarkszellen - Eine Zellkulturuntersuchung mit orthopädisch relevanten Biomaterialien -. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1995.40.s1.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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440
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Sim AJW, Ashaal YE, Ramadan K, Prem Chandran VP, Sebastian M, Salam IMA, Azab IA, Abu Galala KH, Ahmed M. Laparoscopic repair of perforated duodenal ulcers using collagen fleece coated with fibrin glue. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/13645709509152780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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441
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Lobo SM, Liu ZJ, Yu NC, Humphries S, Ahmed M, Cosman ER, Lenkinski RE, Goldberg W, Goldberg SN. RF tumour ablation: Computer simulation and mathematical modelling of the effects of electrical and thermal conductivity. Int J Hyperthermia 2009; 21:199-213. [PMID: 16019848 DOI: 10.1080/02656730400001108] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
This study determined the effects of thermal conductivity on RF ablation tissue heating using mathematical modelling and computer simulations of RF heating coupled to thermal transport. Computer simulation of the Bio-Heat equation coupled with temperature-dependent solutions for RF electric fields (ETherm) was used to generate temperature profiles 2 cm away from a 3 cm internally-cooled electrode. Multiple conditions of clinically relevant electrical conductivities (0.07-12 S m-1) and 'tumour' radius (5-30 mm) at a given background electrical conductivity (0.12 S m-1) were studied. Temperature response surfaces were plotted for six thermal conductivities, ranging from 0.3-2 W m-1 degrees C (the range of anticipated clinical and experimental systems). A temperature response surface was obtained for each thermal conductivity at 25 electrical conductivities and 17 radii (n=425 temperature data points). The simulated temperature response was fit to a mathematical model derived from prior phantom data. This mathematical model is of the form (T=a+bRc exp(dR) s(f) exp(g)(s)) for RF generator-energy dependent situations and (T=h+k exp(mR)+n?exp(p)(s)) for RF generator-current limited situations, where T is the temperature (degrees C) 2 cm from the electrode and a, b, c, d, f, g, h, k, m, n and p are fitting parameters. For each of the thermal conductivity temperature profiles generated, the mathematical model fit the response surface to an r2 of 0.97-0.99. Parameters a, b, c, d, f, k and m were highly correlated to thermal conductivity (r2=0.96-0.99). The monotonic progression of fitting parameters permitted their mathematical expression using simple functions. Additionally, the effect of thermal conductivity simplified the above equation to the extent that g, h, n and p were found to be invariant. Thus, representation of the temperature response surface could be accurately expressed as a function of electrical conductivity, radius and thermal conductivity. As a result, the non-linear temperature response of RF induced heating can be adequately expressed mathematically as a function of electrical conductivity, radius and thermal conductivity. Hence, thermal conductivity accounts for some of the previously unexplained variance. Furthermore, the addition of this variable into the mathematical model substantially simplifies the equations and, as such, it is expected that this will permit improved prediction of RF ablation induced temperatures in clinical practice.
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442
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Paredes I, Ahmed M, Foster CS. Immunomodulatory Therapy for Vogt-Koyanagi-Harada Patients as First-Line Therapy. Ocul Immunol Inflamm 2009; 14:87-90. [PMID: 16597537 DOI: 10.1080/09273940500536766] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
PURPOSE To report on the use of immunomodulatory therapy (IMT) in a group of patients with Vogt-Koyanagi-Harada disease (VKH) and to compare the outcomes with those of another group of patients with VKH who were treated for prolonged periods with corticosteroids. METHODS Treatment regimens and their respective outcomes (visual acuity) were compared for the following groups: prolonged steroid with or without delayed addition of IMT (Group 1) and relatively prompt IMT with or without steroid (Group 2). RESULTS The average duration of follow-up in Group 1 was 28.9 months and in Group 2 23.4 months. In Group 1, visual acuity deteriorated in three of the five patients (60%) and improved in one (20%). The fifth patient showed improvement in visual acuity in one eye, but decreased visual acuity in the other eye. In Group 2, seven of the eight patients showed improvement in their visual acuities (87.5%); visual acuity deteriorated in one patient (12.5%). CONCLUSIONS The results suggest that IMT as first-line therapy for VKH is associated with a superior visual outcome when compared to steroid as monotherapy or with delayed addition of IMT.
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443
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Al-Busaidi A, Al-Rawahy S, Ahmed M. Response of Different Tomato Cultivars to Diluted Seawater Salinity. ACTA ACUST UNITED AC 2009. [DOI: 10.3923/ajcs.2009.77.86] [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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444
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Hussain A, Sasidharan S, Ahmed T, Ahmed M, Sharma C. Clove (Syzygium aromaticum) Extract Potentiates Gemcitabine Cytotoxic Effect on Human Cervical Cancer Cell Line. ACTA ACUST UNITED AC 2009. [DOI: 10.3923/ijcr.2009.95.104] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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445
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Palmer NOA, Ahmed M, Grieveson B. An investigation of current endodontic practice and training needs in primary care in the north west of England. Br Dent J 2009; 206:E22; discussion 584-5. [DOI: 10.1038/sj.bdj.2009.473] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2009] [Indexed: 11/09/2022]
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446
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Munshi SU, Ahmed J, Ahmed M, Nessa A, Tabassum S. Combination of three rapid tests: An alternative approach to confirmatory laboratory diagnosis of HIV infection in Bangladesh. Indian J Med Microbiol 2009; 27:170-1. [PMID: 19384049 DOI: 10.4103/0255-0857.49439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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447
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Amin N, Hossain M, Khandokar M, Kamruzzaman M, Moinuddin M, Chowdhury T, Haque A, Ahmed M. Treatment of ameloblastoma and keratocyst by dredging method. Int J Oral Maxillofac Surg 2009. [DOI: 10.1016/j.ijom.2009.03.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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448
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Nicholas AK, Swanson EA, Cox JJ, Karbani G, Malik S, Springell K, Hampshire D, Ahmed M, Bond J, Di Benedetto D, Fichera M, Romano C, Dobyns WB, Woods CG. The molecular landscape of ASPM mutations in primary microcephaly. J Med Genet 2009; 46:249-53. [PMID: 19028728 PMCID: PMC2658750 DOI: 10.1136/jmg.2008.062380] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 10/08/2008] [Accepted: 10/16/2008] [Indexed: 11/06/2022]
Abstract
BACKGROUND Autosomal recessive primary microcephaly (MCPH) is a model disease to study human neurogenesis. In affected individuals the brain grows at a reduced rate during fetal life resulting in a small but structurally normal brain and mental retardation. The condition is genetically heterogeneous with mutations in ASPM being most commonly reported. METHODS AND RESULTS We have examined this further by studying three cohorts of microcephalic children to extend both the phenotype and the mutation spectrum. Firstly, in 99 consecutively ascertained consanguineous families with a strict diagnosis of MCPH, 41 (41%) were homozygous at the MCPH5 locus and all but two families had mutations. Thus, 39% of consanguineous MCPH families had homozygous ASPM mutations. Secondly, in 27 non-consanguineous, predominantly Caucasian families with a strict diagnosis of MCPH, 11 (40%) had ASPM mutations. Thirdly, in 45 families with a less restricted phenotype including microcephaly and mental retardation, but regardless of other neurological features, only 3 (7%) had an ASPM mutation. This report contains 27 novel mutations and almost doubles the number of MCPH associated ASPM mutations known to 57. All but one of the mutations lead to the use of a premature termination codon, 23 were nonsense mutations, 28 deletions or insertions, 5 splicing, and 1 was a translocation. Seventeen of the 57 mutations were recurrent. There were no definitive missense mutations found nor was there any mutation/phenotype correlation. ASPM mutations were found in all ethnic groups studied. CONCLUSION This study confirms that mutations in ASPM are the most common cause of MCPH, that ASPM mutations are restricted to individuals with an MCPH phenotype, and that ASPM testing in primary microcephaly is clinically useful.
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Ahmed M, Strauss M, Kassaie A, Shotelersuk V, DeGuzman R. Bilateral submandibular gland aplasia with clinico-radiological mass due to prolapsing sublingual salivary tissue through mylohyoid boutonnière: a case report and review. Dentomaxillofac Radiol 2009; 38:121-4. [DOI: 10.1259/dmfr/63254814] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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450
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Ara N, Nur MH, Amran MS, Wahid MII, Ahmed M. In vitro antimicrobial and cytotoxic activities of leaves and flowers extracts from Lippia alba. Pak J Biol Sci 2009; 12:87-90. [PMID: 19579925 DOI: 10.3923/pjbs.2009.87.90] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The research was conducted to investigate the in vitro antimicrobial and cytotoxic activities of leaves and flowers extract extracted from Lippia alba. Disc diffusion technique was used for in vitro antibacterial and antifungal screening. Zones of inhibition were observed in disc diffusion for antibacterial screening against 4 Gram-positive pathogenic and 6 Gram-negative pathogenic bacteria. Among crude extracts chloroform extract showed good activity against all test organisms. A Large zone of inhibition was observed (18 mm) against Vibrio parahaemolyticus. In antifungal screening, the compound showed mild to moderate zones of inhibition against four tested organisms. A Large zone of inhibition was observed against Aspergillus niger (13 mm). Cytotoxic activities of crude extracts were determined using Brine shrimp lethality Bioassay and LC50 values of standard Vincristin sulphate as positive control, n-hexane and crude ethanol extracts were found to be 5, 15 and 20 microg mL(-1), respectively.
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