101
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Tariq M, Hameed S, Magnago RF, Bechtold IH, Merlo AA. Side-Chain Liquid-Crystalline Polymer Tetrazoles: Synthesis and Characterization. J BRAZIL CHEM SOC 2014. [DOI: 10.5935/0103-5053.20140107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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102
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Ehsan Qureshi A, Hameed S, Noeman A. Relationship of serum uric Acid level and angiographic severity of coronary artery disease in male patients with acute coronary syndrome. Pak J Med Sci 2013; 29:1137-41. [PMID: 24353707 PMCID: PMC3858930 DOI: 10.12669/pjms.295.4029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 07/01/2013] [Accepted: 07/28/2013] [Indexed: 02/07/2023] Open
Abstract
Background and objective: The association between serum uric acid and ischemic heart disease remains controversial and it has not yet been established as cardiovascular risk factor. Our objective was to study the association of serum uric acid level with angiographic severity of coronary artery disease in men with acute coronary syndrome (ACS). Methods: This cross-sectional study was conducted on 100 consecutive male patients presenting with ACS at Punjab Institute of Cardiology. Hyperuricemia was defined as serum uric acid level > 6.5 mg/dl. Severity of ischemic heart disease was assessed on the basis of Gensini score, number of diseased vessels, critical lesions and total occlusions on coronary angiogram. Results: Mean age of normouricemic group (n=59) was 52.62 ± 9.46 years and mean age of hyperuricemic group (n=41) was 50.52 ± 9.40 years (p=0.273). Mean uric acid level; normouricemic group (4.75 ± 1.05), hyperuricemic group (7.61 ± 1.24), p<0.001. Mean Gensini score; normouricemic group (22.15 ± 21.52), hyperuricemic group (35.69 ± 26.80). Mann Whitney U test was applied to compare the Gensini score of two groups and it showed statistically significant difference (p value <0.006). Critical lesions, total occlusions and multi-vessel disease were more frequent in hyperuricemic group but statistically significant difference was found only for total occlusions (p=0.013) and critical lesions (p=0.046). Conclusions: Hyeruricemia is associated with higher Gensini score and more frequent total occlusions and critical lesions in men presenting with acute coronary syndrome.
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Affiliation(s)
- Azmat Ehsan Qureshi
- Azmat Ehsan Qureshi, MBBS, FCPS (MED), Post graduate trainee for FCPS Cardiology, Punjab Institute of Cardiology, Lahore, Pakistan
| | - Shahid Hameed
- Shahid Hameed, MBBS, MRCP (UK), Associate Professor of Cardiology, Punjab Institute of Cardiology, Lahore, Pakistan
| | - Ahmed Noeman
- Ahmed Noeman, MBBS, FCPS (MED), FCPS(Cardiology), Assistant Professor of Cardiology, Punjab Institute of Cardiology, Lahore, Pakistan
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103
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Hameed S, Ehtesham-ul-haq RHJ, Ahmed RS, Majid A, Waqas M, Aslam A, Yusuf O, Butt AM, Ali G. Use of vascularised free fibula in limb reconstruction (for non-malignant defects). J PAK MED ASSOC 2013; 63:1549-1554. [PMID: 24397107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The case series was conducted at the Department of Plastic Surgery, Combined Military Hospital, Rawalpindi, from June 2009 to May 2011, and comprised 19 patients in whom free fibula flap was performed for upper and lower limb reconstruction, using SPSS 16. Results showed that flap survival was 100%. One (5.2%) flap was re-explored for venous congestion and was salvaged. One (5.2%) patient of congenital pseudoarthrosis of tibia had a fracture of the fibula and was treated with external fixation. Average follow up was 8 months. Mean union time and full weight-bearing was 6.5 +/- 1.34 months (range 3-8 months) and 9 months, respectively. No recurrence of pseudoathrosis was observed until the last follow up, with only a 1.5 cm length discrepancy in one patient. The results proved that a microvascular free fibular flap heals rapidly, causes early functional recovery and it can be raised as an osteocutaneous flap.
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Affiliation(s)
- Shahid Hameed
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi
| | | | - Rao Saood Ahmed
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi
| | - Abdul Majid
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi
| | - Muhammad Waqas
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi
| | - Ayesha Aslam
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi
| | - Omamah Yusuf
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi
| | - Ahsin Masood Butt
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi
| | - Ghazanfar Ali
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi
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104
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Mehmood T, Ali M, Masood U, Shah MA, Hameed S, Jamshed A. PR51 PATTERNS OF FAILURE IN BREAST CANCER PATIENTS TREATED WITH MASTECTOMY WITHOUT RADIOTHERAPY. Breast 2013. [DOI: 10.1016/s0960-9776(13)70065-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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105
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Ahmad M, Hameed S, Tahir MN, Anwar M, Israr M. N′-[( E)-3-Bromobenzylidene]pyrazine-2-carbohydrazide. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1635. [PMID: 24454080 PMCID: PMC3884304 DOI: 10.1107/s1600536813027426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Accepted: 10/06/2013] [Indexed: 11/10/2022]
Abstract
In the title compound, C12H9BrN4O, the dihedral angle between the aromatic rings is 12.16 (12)°. An intramolecular N—H...N hydrogen bond closes anS(5) ring. In the crystal, C—H...O hydrogen bonds link the molecules intoC(6) chains propagating in [010]. Very weak aromatic π–π stacking [centroid–centroid separations = 3.9189 (15) and 3.9357 (15) Å] is also observed.
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106
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Hameed S, Ting S, Yan F, Ng H, Yeo D. Complementary and alternative medicine use among patients with cognitive impairment in Singapore. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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107
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Ting S, Hameed S. ‘/INS;Lexical’/INS; alexia in a Chinese semantic dementia patient. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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108
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Hameed S, Ahmad M, Tahir MN, Shah MA, Shad HA. N'-[(E)-4-Bromo-benzyl-idene]pyrazine-2-carbohydrazide. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1141. [PMID: 24046691 PMCID: PMC3770406 DOI: 10.1107/s1600536813016917] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 06/18/2013] [Indexed: 11/20/2022]
Abstract
In the title compound, C12H9BrN4O, the N′-methylidenepyrazine-2-carbohydrazide and 4-bromobenzene groups are oriented at a dihedral angle of 10.57 (7)°. The hydrazide N—H group is involved in intramolecular N—H⋯N interaction, which generates an S(5) motif. A short C—H⋯O interaction is formed between the methylidene H atom and the carbonyl O atom. It connects molecules into chains extending along [100]. In addition, molecules are arranged into stacks extending along [010] via π–π interactions between pyrazine and benzene rings, with centroid–centroid distances of 3.837 (2) and 3.860 (2) Å.
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Affiliation(s)
- Shahid Hameed
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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109
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Peeraully T, Hameed S, Cheong PT, Pavanni R, Hussein K, Fook-Chong SMC, Tan EK. Complementary therapies in hemifacial spasm and comparison with other movement disorders. Int J Clin Pract 2013; 67:801-6. [PMID: 23869681 DOI: 10.1111/ijcp.12151] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 02/06/2013] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES We determined the prevalence, range and factors influencing the use of complementary therapy among hemifacial spasm patients and compared the patterns of use of complementary therapies across different movement disorders in a systematic pooled analysis of published literature. METHODS A structured questionnaire was administered to 96 hemifacial spasm patients evaluating frequency of complementary therapy use, and factors influencing patients' decision to seek these therapies. We also performed a PubMed search of epidemiology studies on use of complementary therapies in movement disorders. RESULTS Fifty-one per cent of patients had tried complementary therapies, of which 47% reported some perceived benefit and 4.1% informed their doctor. Acupuncture (71.4%) and facial massage (17.6%) were most commonly used. Complementary therapy use was associated with greater HFS severity. The mean cost of treatment was about $78 per month. We identified eight articles on use of complementary therapies in movement disorders; Parkinson's disease (5), Tourette syndrome (2) and dystonia (1). Twenty-five to 88% of patient had tried complementary therapies, of which 32-70% reported some benefit. Trials of acupuncture (2-63%) and massage (7-38%) were reported across the spectrum of movement disorders studied. Mean cost of complementary therapies varied from 43 to 102 USD per month. CONCLUSION Complementary therapies are used by over 50% of HFS patients, and the use is correlated with severity of disease. Despite differences in race, culture and population demographics, acupuncture and massage are used by patients across the spectrum of movement disorders.
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Affiliation(s)
- T Peeraully
- Department of Neurology, Singapore General Hospital, Singapore
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110
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Nasir A, Avais M, Khan MS, Khan JA, Hameed S, Reichel MP. TreatingCryptosporidium parvumInfection in Calves. J Parasitol 2013; 99:715-7. [DOI: 10.1645/12-42.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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111
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Nisar M, Ali S, Tahir MN, Ahmad B, Hameed S. 4,4,6a,6b,11,12,14b-Heptamethyl-16-oxo-1,2,3,4,4a,5,6,6a,6b,7,8,9,10,11,12,12a,14a,14b-octa-deca-hydro-12b,8a-(epoxy-methano)-picen-3-yl acetate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o573. [PMID: 23634108 PMCID: PMC3629621 DOI: 10.1107/s1600536813007253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 03/16/2013] [Indexed: 11/10/2022]
Abstract
The title compound, C32H48O4, which was extracted from the bark of Rhododendron arboreum, consists of five fused rings to which an acetate and seven methyl groups are attached. The A, D and E rings adopt chair conformations, the B ring is in a distorted chair and the C ring is in a half-chair conformation. The five-membered ring formed by the lactone group, which bridges from the A/B to the B/C ring junctions, is an approximate envelope with the C atom of the methyne group as the flap [displacement from the other four atoms = 0.753 (2) Å]. There are no identified directional inter-actions in the crystal structure.
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Affiliation(s)
- Mohammad Nisar
- University of Peshawar, Institute of Chemical Sciences, Peshawar 25120, Pakistan
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112
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Badshah A, Kessler MR, Heng Z, Zaidi JH, Hameed S, Hasan A. An efficient approach to prepare ether and amide-based self-catalyzed phthalonitrile resins. Polym Chem 2013. [DOI: 10.1039/c3py00237c] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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113
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Abbas MA, Hameed S, Kressler J. Preparation of 2(3H)-Benzimidazolone and its Derivative Under Aqueous Condition As a Potential Agent for Antidiabetic Compounds. ACTA ACUST UNITED AC 2013. [DOI: 10.14233/ajchem.2013.13372] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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114
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Ali M, Tahir M, Hameed S, Ashraf M. Coat protein based molecular characterization of Barley yellow dwarf virus isolates identified on oat plants in Pakistan. Acta Virol 2013; 57:383-385. [PMID: 24020768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Barley yellow dwarf virus (BYDV) is a potential threat to the agriculture production. The amplified complete coat protein sequences of the isolate M07 and M12 were determined to be 597 bp and 603bp, respectively. M07 showed maximum nucleotide sequence identity of 87.6% (84.3% amino acid sequence identity) to a Chinese isolate of BYDV-PAV. Whereas, the isolate M12 showed maximum nucleotide sequence identity of 94.5% (94.0% amino acid sequence identity) to French isolate BYDV-PAV. Since more than 10 o/o differences, among the amino acid level of any gene product, is the sole criterion to discriminate between species within the family Luteoviridae, the isolate M07 that shows maximum of 84.3% (less than 90%) amino acid sequence identity with previously known Luteovirus species, is thus, recommended to be a distinct PAV species within the genus Luteovirus.
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115
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Abbas MA, Hameed S, Kressler J. Selective degradation, oxidation, and characterization of hydroxyethyl starch for potential use as a drug carrier. STARCH-STARKE 2012. [DOI: 10.1002/star.201200065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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116
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Khan MUH, Akhtar T, A. Al-Masoudi N, Stoeckli-Evans H, Hameed S. Synthesis, Crystal Structure and Anti-HIV Activity of 2- Adamantyl/adamantylmethyl-5-aryl-1,3,4-oxadiazoles. Med Chem 2012. [DOI: 10.2174/157340612804075232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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117
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Doherty OM, Riemer N, Hameed S. Control of Saharan mineral dust transport to Barbados in winter by the Intertropical Convergence Zone over West Africa. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2012jd017767] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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118
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Hameed S, Hameed S, Sadia M, Malik SA. Genetic diversity analysis of Bemisia tabaci populations in Pakistan using RAPD markers. ELECTRON J BIOTECHN 2012. [DOI: 10.2225/vol15-issue6-fulltext-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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119
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Abstract
The title compound, C9H12N2O2, is approximately planar (r.m.s. deviation = 0.13 Å for all non-H atoms). The carbonyl O atom is involved as acceptor in three different hydrogen-bond interactions. One N—H⋯O and the C—H⋯O(carbonyl) contact together with a weak C—H⋯O(ethoxy) interaction link the molecules into sheets parallel to (102). These are further linked into a three-dimensional network via the remaining C—H⋯O(carbonyl) hydrogen bond and a C(methylene)—H⋯π interaction
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Affiliation(s)
- Muhammad Farman
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
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120
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Khan MUH, Akhtar T, Al-Masoudi NA, Stoeckli-Evans H, Hameed S. Synthesis, crystal structure and anti-HIV activity of 2-adamantyl/adamantylmethyl-5-aryl-1,3,4-oxadiazoles. Med Chem 2012; 8:1190-7. [PMID: 22741800 DOI: 10.2174/1573406411208061190] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 04/18/2012] [Accepted: 04/30/2012] [Indexed: 11/22/2022]
Abstract
Two series of 2-adamantyl/adamantylmethyl-5-aryl-1,3,4-oxadiazoles (4a-l and 5a-l) were synthesized by cyclodehydration of adamantan-1-carboxylic acid/adamantylacetic acid with various aryl hydrazides (3a-l) in the presence of POCl(3). The synthesis was supported by spectroanalytical techniques and verified further by crystal structure determination of compounds 4e and 5k. The synthesized compounds were screened for their inhibitory activity against HIV-1 and HIV-2 in MT-4 cells. Compound 5b exhibited a moderate activity in vitro for the replication of both virus types, suggesting for further structural modification as a new lead in the development of an antiviral agent.
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121
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Naseer MM, Hameed S. Double Suzuki cross-coupling reaction of pyrimidine boronic acid: synthesis of new versatile dielectrophile. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2865] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Shahid Hameed
- Department of Chemistry; Quaid-i-Azam University; Islamabad; 45320; Pakistan
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122
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Masood A, Muhammad A, Mehmood T, Masood U, Hameed S, Ahmed I. EP-1095 NADIR PSA AS PREDICTIVE MARKER FOR BIOCHEMICAL RELAPSE IN INTERMEDIATE AND HIGH RISK LOCALIZED PROSTATE CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71428-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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123
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Cheong W, Pavanni R, Hameed S, Hussien K, Tan E. 1.231 SEVERITY OF HEMIFACIAL SPASM CORRELATES WITH THE USE OF COMPLEMENTARY THERAPIES. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70289-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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125
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Weiss N, Hameed S, Fernández-Fernández JM, Fablet K, Karmazinova M, Poillot C, Proft J, Chen L, Bidaud I, Monteil A, Huc-Brandt S, Lacinova L, Lory P, Zamponi GW, De Waard M. A Ca(v)3.2/syntaxin-1A signaling complex controls T-type channel activity and low-threshold exocytosis. J Biol Chem 2011; 287:2810-8. [PMID: 22130660 DOI: 10.1074/jbc.m111.290882] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
T-type calcium channels represent a key pathway for Ca(2+) entry near the resting membrane potential. Increasing evidence supports a unique role of these channels in fast and low-threshold exocytosis in an action potential-independent manner, but the underlying molecular mechanisms have remained unknown. Here, we report the existence of a syntaxin-1A/Ca(v)3.2 T-type calcium channel signaling complex that relies on molecular determinants that are distinct from the synaptic protein interaction site (synprint) found in synaptic high voltage-activated calcium channels. This interaction potently modulated Ca(v)3.2 channel activity, by reducing channel availability. Other members of the T-type calcium channel family were also regulated by syntaxin-1A, but to a smaller extent. Overexpression of Ca(v)3.2 channels in MPC 9/3L-AH chromaffin cells induced low-threshold secretion that could be prevented by uncoupling the channels from syntaxin-1A. Altogether, our findings provide compelling evidence for the existence of a syntaxin-1A/T-type Ca(2+) channel signaling complex and provide new insights into the molecular mechanism by which these channels control low-threshold exocytosis.
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Affiliation(s)
- Norbert Weiss
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary T2N4N1, Canada
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126
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Syed T, Hameed S, Jones PG. (S)-N-[1-(5-Benzyl-sulfan-yl-1,3,4-oxa-diazol-2-yl)-2-phenyl-eth-yl]-4-methyl-benzene-sulfonamide. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2875-6. [PMID: 22219915 PMCID: PMC3247610 DOI: 10.1107/s1600536811040669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Accepted: 10/03/2011] [Indexed: 11/30/2022]
Abstract
The title compound, C(24)H(23)N(3)O(3)S(2), crystallizes with two independent mol-ecules in the asymmetric unit. They differ essentially in the orientation of the tolyl rings, between which there is π-π stacking (centroid-centroid distance = 3.01 Å). The absolute configuration was confirmed by the determination of the Flack parameter [x = 0.008 (9)]. In the crystal, mol-ecules are connected by two classical N-H⋯N hydrogen bonds and two weak but very short C-H⋯O(sulfon-yl) inter-actions, forming layers lying parallel to the bc plane.
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Affiliation(s)
- Tayyaba Syed
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Shahid Hameed
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Peter G. Jones
- Institut for Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
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127
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Syed T, Hameed S, Jones PG. (S)-N-{1-[5-(4-Chloro-benzyl-sulfanyl)-1,3,4-oxadiazol-2-yl]eth-yl}-4-methyl-benzene-sulfonamide. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2793. [PMID: 22064948 PMCID: PMC3201458 DOI: 10.1107/s1600536811039134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Accepted: 09/23/2011] [Indexed: 11/27/2022]
Abstract
The title compound, C18H18ClN3O3S2, adopts by folding the form of a distorted disc. Interplanar angles are 29.51 (7) and 63.43 (7)° from the five-membered ring to the aromatic systems and 34.80 (6)° between these two latter rings. The absolute configuration was confirmed by determination of the Flack parameter. In the crystal, the molecules are linked by four hydrogen bonds, one classical (N—H⋯N) and three ‘weak’ (C—H⋯O), forming layers parallel to the ac plane; these are in turn linked in the third dimension by Cl⋯N [3.1689 (16) Å] and Cl⋯O [3.3148 (13) Å] contacts to the heterocyclic ring.
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128
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Zhang T, Cheng L, Hameed S, Liu L, Wang D, Chen YJ. Highly enantioselective Michael addition of 2-oxindoles to vinyl selenone in RTILs catalyzed by a Cinchona alkaloid-based thiourea. Chem Commun (Camb) 2011; 47:6644-6. [PMID: 21776615 DOI: 10.1039/c1cc10880h] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective Michael addition of 2-oxindoles (1) to vinyl selenone (2) in RTILs catalyzed by a Cinchona alkaloid-based thiourea has been developed in high yields (80-91%) with excellent enantioselectivities (up to 95% ee).
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Affiliation(s)
- Tao Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Ehtesham-ul-Haq, Aslam A, Hameed S, Ahmad RS, Majid A, Waqas M. Free anterolateral thigh flap raised on musculocutaneous perforators of rectus femoris muscle. J Coll Physicians Surg Pak 2011; 21:511-2. [PMID: 21798144 DOI: 08.2011/jcpsp.511512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Accepted: 07/05/2011] [Indexed: 11/22/2022]
Abstract
The anterolateral thigh flap (ALTF) has been in wide clinical use for the last two decades, its major disadvantage has been its variable anatomy. We are presenting a case in which no substantial perforators were found to be arising from either the lateral septum of thigh or Vastus Laterlis muscle. In this case, instead of raising another flap, we used the same skin paddle raised on the musculocutaneous perforators of rectus femoris muscle.
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Affiliation(s)
- Ehtesham-ul-Haq
- Department of Plastic and Reconstructive Surgery, Combined Military Hospital, Rawalpindi.
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Mehta V, Hameed S, Balachandran C, Roy A. Peripheral T Cell Lymphoma Presenting with Hypereosinophilia. Med J Armed Forces India 2011; 64:89-91. [PMID: 27408095 DOI: 10.1016/s0377-1237(08)80166-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Accepted: 08/25/2007] [Indexed: 10/18/2022] Open
Affiliation(s)
- V Mehta
- Assistant Professor, Kasturba Medical College, Manipal, Karnataka
| | - S Hameed
- Postgraduate Student, Kasturba Medical College, Manipal, Karnataka
| | - C Balachandran
- Professor and Head (Department of Skin & STD), Kasturba Medical College, Manipal, Karnataka
| | - A Roy
- Associate Professor (Department of Pathology), Kasturba Medical College, Manipal, Karnataka
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Abstract
BACKGROUND Concurrence of migraine and hallucinations is extremely rare and the underlying mechanism is poorly understood. METHODS We report a 22-year-old man with migraine associated with auditory hallucinations. Concurrent psychotic illness has been excluded. RESULTS Brain MR scans showed a stable, patchy FLAIR hyperintensity over the posterolateral aspect of the left cerebral peduncle, just below the level of the red nucleus. This was felt to represent an area of gliosis based on the interval stability over 19 months. There was absence of features for aggressive neoplasms, such as lesional high cellular turnover (choline/NAA ratio >1.0) or high cerebral blood volume on advanced MR imaging with MR spectroscopy and dynamic perfusion MR. EEG and brainstem auditory evoked potentials were unremarkable. CONCLUSIONS To our knowledge, there are no reports to date on similar auditory hallucinations in adult migraine patients, as well as with associated MRI brainstem lesions. The peduncular lesion could represent a previous migrainous infarct, and a possible analogy can be drawn from the descriptions of peduncular hallucinosis. Brainstem lesions, particularly in the midbrain and pons, have rarely been associated with this condition. It has been postulated that the damage to ascending reticular systems or thalamocortical circuitry may contribute to its pathogenesis.
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Affiliation(s)
- Y L Lo
- Department of Neurology, National Neuroscience Institute, Singapore General Hospital, Outram Road, Singapore.
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132
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Kazmi A, Ali W, Syed A, Yusuf M, Hameed S, Majeed U, Shah M, Haider I, Jamshed A. 1070 poster RESPONSE WITH OXALIPLATIN BASED NEOADJUVANT CHEMOTHERAPY BEFORE CHEMORADIATION IN LOCALLY ADVANCED RECTAL CANCER. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71192-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dueñas-González A, Zarbá JJ, Patel F, Alcedo JC, Beslija S, Casanova L, Pattaranutaporn P, Hameed S, Blair JM, Barraclough H, Orlando M. Phase III, Open-Label, Randomized Study Comparing Concurrent Gemcitabine Plus Cisplatin and Radiation Followed by Adjuvant Gemcitabine and Cisplatin Versus Concurrent Cisplatin and Radiation in Patients With Stage IIB to IVA Carcinoma of the Cervix. J Clin Oncol 2011; 29:1678-85. [DOI: 10.1200/jco.2009.25.9663] [Citation(s) in RCA: 338] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Purpose To determine whether addition of gemcitabine to concurrent cisplatin chemoradiotherapy and as adjuvant chemotherapy with cisplatin improves progression-free survival (PFS) at 3 years compared with current standard of care in locally advanced cervical cancer. Patients and Methods Eligible chemotherapy- and radiotherapy-naive patients with stage IIB to IVA disease and Karnofsky performance score ≥ 70 were randomly assigned to arm A (cisplatin 40 mg/m2 and gemcitabine 125 mg/m2 weekly for 6 weeks with concurrent external-beam radiotherapy [XRT] 50.4 Gy in 28 fractions, followed by brachytherapy [BCT] 30 to 35 Gy in 96 hours, and then two adjuvant 21-day cycles of cisplatin, 50 mg/m2 on day 1, plus gemcitabine, 1,000 mg/m2 on days 1 and 8) or to arm B (cisplatin and concurrent XRT followed by BCT only; dosing same as for arm A). Results Between May 2002 and March 2004, 515 patients were enrolled (arm A, n = 259; arm B, n = 256). PFS at 3 years was significantly improved in arm A versus arm B (74.4% v 65.0%, respectively; P = .029), as were overall PFS (log-rank P = .0227; hazard ratio [HR], 0.68; 95% CI, 0.49 to 0.95), overall survival (log-rank P = .0224; HR, 0.68; 95% CI, 0.49 to 0.95), and time to progressive disease (log-rank P = .0012; HR, 0.54; 95% CI, 0.37 to 0.79). Grade 3 and 4 toxicities were more frequent in arm A than in arm B (86.5% v 46.3%, respectively; P < .001), including two deaths possibly related to treatment toxicity in arm A. Conclusion Gemcitabine plus cisplatin chemoradiotherapy followed by BCT and adjuvant gemcitabine/cisplatin chemotherapy improved survival outcomes with increased but clinically manageable toxicity when compared with standard treatment.
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Affiliation(s)
- Alfonso Dueñas-González
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Juan J. Zarbá
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Firuza Patel
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Juan C. Alcedo
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Semir Beslija
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Luis Casanova
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Pittayapoom Pattaranutaporn
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Shahid Hameed
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Julie M. Blair
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Helen Barraclough
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
| | - Mauro Orlando
- From the National Cancer Institute/Institute of Biomedical Research, Universidad Nacional Autónoma de México, México City, México; Medical Center, San Roque, Tucumán; Eli Lilly Interamerica, Buenos Aires, Argentina; Post Graduate Institute of Medical Education and Research, Chandigarh, India; National Institute of Oncology, Panamá, Panamá; Institute of Oncology, Clinical Centre of Sarajevo University, Sarajevo, Bosnia and Herzegovina; Instituto Nacional de Enfermedades Neoplasticas, Lima, Peru; Siriraj
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Hyder MZ, Shah SH, Hameed S, Naqvi SMS. Evidence of recombination in the Banana bunchy top virus genome. Infect Genet Evol 2011; 11:1293-300. [PMID: 21539936 DOI: 10.1016/j.meegid.2011.04.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Revised: 04/13/2011] [Accepted: 04/16/2011] [Indexed: 10/18/2022]
Abstract
Viruses serve as good model for evolutionary studies, owing to their short generation times and small genomes. Banana bunchy top virus (BBTV) is a significant subject being multicomponent circular single stranded DNA virus. BBTV belongs to family Nanoviridae and contains DNA-R, -U3, -S, -M, -C, and -N as integral genomic components. Evolutionary studies have shown genetic re-assortment of components among its isolates and revealed a concerted type evolution in non-coding regions of its genome. The DNA U3 having been shown as the most diverse component in our previous studies, was subjected to sequencing from some Pakistani isolates for the first time. Sequence analysis revealed intergenomic recombination in DNA-U3 among the isolates of two sub-groups and a very rare intragenomic recombination in Pakistani BBTV population. This indicates that like other evolutionary processes including intergenomic recombination, intragenomic recombination among the genomic components of the same isolate may also have a significant contribution in the evolution of BBTV genome. Intragenomic recombination therefore appears to be a unique way to generate genetic diversity in the multicomponent ssDNA viruses.
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Affiliation(s)
- Muhammad Zeeshan Hyder
- Department of Biosciences, COMSATS Institute of Information Technology Islamabad, Islamabad 44000, Pakistan
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136
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Yasin KA, Ansarifar A, Hameed S, Wang L. A new method for crosslinking and reinforcing acrylonitrile-butadiene rubber using a silanized silica nanofiller. POLYM ADVAN TECHNOL 2011. [DOI: 10.1002/pat.1518] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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137
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Syed T, Akhtar T, Al-Masoudi NA, Jones PG, Hameed S. Synthesis, QSAR and anti-HIV activity of new 5-benzylthio-1,3,4-oxadiazoles derived from α-amino acids. J Enzyme Inhib Med Chem 2011; 26:668-80. [PMID: 21250823 DOI: 10.3109/14756366.2010.546792] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Tayyaba Syed
- Department of Chemistry, Quaid-I-Azam University, Islamabad, Pakistan
| | - Tashfeen Akhtar
- Department of Chemistry, Quaid-I-Azam University, Islamabad, Pakistan
| | - Najim A. Al-Masoudi
- Chemistry Department, College of Basrah, Basrah, Iraq (previous address: Fachbereich Chemie, Universität Konstanz, Konstanz, Germany)
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Shahid Hameed
- Department of Chemistry, Quaid-I-Azam University, Islamabad, Pakistan
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138
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Sadia M, Rabbani M, Hameed S, Pearce S, Malik S. Isolation of genomic DNA from defatted oil seed residue of rapeseed (Brassica napus). Genet Mol Res 2011; 10:197-202. [DOI: 10.4238/vol10-1gmr1009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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139
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Khan MUH, Hameed S, Akhtar T, Stoeckli-Evans H. 6-(Adamantan-1-yl)-3-(3-fluoro-phen-yl)-1,2,4-triazolo[3,4-b][1,3,4]thia-diazole. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o3215-6. [PMID: 21589508 PMCID: PMC3011398 DOI: 10.1107/s1600536810046428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Accepted: 11/10/2010] [Indexed: 11/10/2022]
Abstract
The title molecule, C19H19FN4S, displays Cs molecular symmetry, in which the crystallographic mirror plane bisects the adamantan-1-yl unit while the 3-fluorophenyl triazole ring is located on the mirror plane. The F atom of the 3-fluorophenyl ring is positionally disordered [occupancy ratio 0.9:0.1]. In the crystal, π–π interactions between the triazole and phenyl rings occur [centroid–centroid distance = 3.5849 (7) Å] and weak C—H⋯F interactions form a ribbon propagating in [010].
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140
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Khan I, Ali S, Hameed S, Rama NH, Hussain MT, Wadood A, Uddin R, Ul-Haq Z, Khan A, Ali S, Choudhary MI. Synthesis, antioxidant activities and urease inhibition of some new 1,2,4-triazole and 1,3,4-thiadiazole derivatives. Eur J Med Chem 2010; 45:5200-7. [DOI: 10.1016/j.ejmech.2010.08.034] [Citation(s) in RCA: 221] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 08/09/2010] [Accepted: 08/12/2010] [Indexed: 11/29/2022]
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141
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Al-Masoudi NA, Hamad NS, Hameed S, Pannecouque C. Amino acid derivatives. Part 6. New analogues of the angiotensin-converting enzyme 'Captopril'. Synthesis and anti-HIV activity. ARKIVOC 2010. [DOI: 10.3998/ark.5550190.0011.b20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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142
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Ali S, Hameed S, Luqman A, Akhtar T, Parvez M. 4-Methylbenzenecarbothioamide. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o1271. [PMID: 21579372 PMCID: PMC2979520 DOI: 10.1107/s1600536810015813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Accepted: 04/29/2010] [Indexed: 12/03/2022]
Abstract
In the title molecule, C8H9NS, the mean plane of the carbothioamide group is twisted slightly with respect to the mean plane of the benzene ring, making a dihedral angle of 17.03 (10)°. The crystal structure is stabilized by intermolecular N—H⋯S hydrogen bonds, resulting in the formation of eight-membered rings lying about inversion centers and representing R22(8) and R42(8) motifs. Futhermore, these hydrogen bonds build up chains parallel to the b axis.
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143
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Ali S, Hameed S, Luqman A, Akhtar T, Parvez M. 4-Methoxy-benzene-carbothio-amide. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o1272. [PMID: 21579373 PMCID: PMC2979506 DOI: 10.1107/s1600536810015825] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Accepted: 04/29/2010] [Indexed: 11/10/2022]
Abstract
The asymmetric unit of the title compound, C(8)H(9)NOS, contains two independent mol-ecules with the meth-oxy groups oriented in opposite conformations. The mean planes of the carbothio-amide groups are tilted by 7.88 (15) and 11.16 (9)° from the mean planes of the benzene rings. In the crystal, the mol-ecules form dimers via intermolecular N-H⋯S inter-molecular hydrogen bonds, resulting in eight-membered rings of R(2) (2)(8) graph-set motif. The dimers are further linked by C-H⋯O hydrogen bonds into chains along the c axis. Adjacent chains inter-act through inter-molecular N-H⋯S hydrogen bonds, generating eight-membered rings of R(4) (2)(8) graph-set motif.
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144
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Khanum S, Farman M, Rama NH, Hameed S, Jones PG. 2-(2-Fluorobiphenyl-4-yl)- N′-(propan-2-ylidene)propanohydrazide. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o858. [PMID: 21580681 PMCID: PMC2983908 DOI: 10.1107/s1600536810009049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Accepted: 03/09/2010] [Indexed: 11/10/2022]
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145
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Akbar AM, Hameed S, Azhar M, Sheikh SS, Sattar A, Naveed T. Significance of chest pain without ST changes during exercise treadmill testing. J Ayub Med Coll Abbottabad 2010; 22:146-151. [PMID: 21702290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Exercise treadmill test is interpreted as positive or negative for ischemia in the presence or absence of ST depression respectively. This study was conducted to evaluate the diagnostic value of chest pain without ST depression during exercise treadmill test. METHODS A total of 180 patients who had abnormal exercise treadmill test result and subsequently underwent coronary angiography were studied. Patients were categorised as having ST depression and angina (group A), only ST depression (group B) and only angina (group C). Coronary angiograms of all patients were assessed and compared. RESULTS Out of 180 patients [159 (88.3%) men and 21 (11.7%) women], 84 patients were in Group A, 64 in Group B and 32 in Group C. Characteristics like age, sex distribution and risk factors were similar in three groups. Significant coronary artery disease was seen in 77 (91.7%), 40 (62.5%) and in 25 (78.1%) patients in groups A, B and C respectively (p=0.02). Triple vessel disease was seen in 21 (25%), 11 (17.2%) and 5 (15.6%) patients in groups A, B and C respectively. Significant disease of left anterior descending artery was seen in 61 (72.6%), 26 (40.6%) and 23 (71.9%) in groups A, B and C respectively (p=0.001). CONCLUSION Occurrence of both ST depression and angina during exercise treadmill test has strong association with angiographic coronary artery disease whereas occurrence of either of the two has similar association with angiographic coronary artery disease with a trend towards more disease in the latter.
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Affiliation(s)
- Ahmad Masood Akbar
- Department of Cardiology, Punjab Institute of Cardiology, Lahore, Pakistan.
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146
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Khan MUH, Hameed S, Yasin KA, Akhtar T, Khan KM. Design, synthesis, and urease inhibition studies of a series of 4-amino-5-aryl-3H-1,2,4-triazole-3-thiones. Monatsh Chem 2010. [DOI: 10.1007/s00706-010-0276-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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147
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Akhtar T, Hameed S, Khan KM, Khan A, Choudhary MI. Design, synthesis, and urease inhibition studies of some 1,3,4-oxadiazoles and 1,2,4-triazoles derived from mandelic acid. J Enzyme Inhib Med Chem 2010; 25:572-6. [PMID: 20235688 DOI: 10.3109/14756360903389864] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Tashfeen Akhtar
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Shahid Hameed
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Khalid M. Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Ajmal Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Muhammad Iqbal Choudhary
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
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Anderson D, Mehaffey WH, Iftinca M, Rehak R, Engbers JDT, Hameed S, Zamponi GW, Turner RW. Regulation of neuronal activity by Cav3-Kv4 channel signaling complexes. Nat Neurosci 2010; 13:333-7. [PMID: 20154682 DOI: 10.1038/nn.2493] [Citation(s) in RCA: 132] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Accepted: 12/14/2009] [Indexed: 11/09/2022]
Abstract
Kv4 low voltage-activated A-type potassium channels are widely expressed in excitable cells, where they control action potential firing, dendritic activity and synaptic integration. Kv4 channels exist as a complex that includes K(+) channel-interacting proteins (KChIPs), which contain calcium-binding domains and therefore have the potential to confer calcium dependence on the Kv4 channel. We found that T-type calcium channels and Kv4 channels form a signaling complex in rat that efficiently couples calcium influx to KChIP3 to modulate Kv4 function. This interaction was critical for allowing Kv4 channels to function in the subthreshold membrane potential range to regulate neuronal firing properties. The widespread expression of these channels and accessory proteins indicates that the Cav3-Kv4 signaling complex is important for the function of a wide range of electrically excitable cells.
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Affiliation(s)
- Dustin Anderson
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
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149
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Evans RM, You H, Hameed S, Altier C, Mezghrani A, Bourinet E, Zamponi GW. Heterodimerization of ORL1 and opioid receptors and its consequences for N-type calcium channel regulation. J Biol Chem 2010; 285:1032-40. [PMID: 19887453 PMCID: PMC2801230 DOI: 10.1074/jbc.m109.040634] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Revised: 10/22/2009] [Indexed: 01/15/2023] Open
Abstract
We have investigated the heterodimerization of ORL1 receptors and classical members of the opioid receptor family. All three classes of opioid receptors could be co-immunoprecipitated with ORL1 receptors from both transfected tsA-201 cell lysate and rat dorsal root ganglia lysate, suggesting that these receptors can form heterodimers. Consistent with this hypothesis, in cells expressing either one of the opioid receptors together with ORL1, prolonged ORL1 receptor activation via nociceptin application resulted in internalization of the opioid receptors. Conversely, mu-, delta-, and kappa-opioid receptor activation with the appropriate ligands triggered the internalization of ORL1. The mu-opioid receptor/ORL1 receptor heterodimers were shown to associate with N-type calcium channels, with activation of mu-opioid receptors triggering N-type channel internalization, but only in the presence of ORL1. Furthermore, the formation of opioid receptor/ORL1 receptor heterodimers attenuated the ORL1 receptor-mediated inhibition of N-type channels, in part because of constitutive opioid receptor activity. Collectively, our data support the existence of heterodimers between ORL1 and classical opioid receptors, with profound implications for effectors such as N-type calcium channels.
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Affiliation(s)
- Rhian M. Evans
- From the Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary T2N 4N1, Canada and
| | - Haitao You
- From the Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary T2N 4N1, Canada and
| | - Shahid Hameed
- From the Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary T2N 4N1, Canada and
| | - Christophe Altier
- From the Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary T2N 4N1, Canada and
| | | | - Emmanuel Bourinet
- the Institut de Génomique Fonctionnelle, CNRS, 34094 Montpellier, France
| | - Gerald W. Zamponi
- From the Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary T2N 4N1, Canada and
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150
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Hawtin KE, Hameed S, Ramachandran R, Harvey CJ, Lim AK, Gishen P, Roddie ME. Provision of a "same-day" ultrasound service in an inner-city NHS trust: report on experience and lessons learned after the first 2 years. Clin Radiol 2009; 65:40-6. [PMID: 20103420 DOI: 10.1016/j.crad.2009.09.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2009] [Revised: 09/13/2009] [Accepted: 09/30/2009] [Indexed: 11/28/2022]
Abstract
AIM To assess the effect of changing from an "appointment" to a "same-day" ultrasound (US) service on referral pattern, departmental workload, and patient satisfaction. MATERIALS AND METHODS To reduce US waiting time of 3 weeks for routine examinations, a "same-day" service was started for outpatients and general practitioner (GP) patients in September 2006. To examine the effect of this change a retrospective assessment was performed of workload during 1 week in June 2006 (appointments only) and the same week in 2008, 22 months after the implementation of the new service. Distance travelled by patients and waiting time was recorded. Patient satisfaction with the service was assessed by questionnaire in September 2008. RESULTS Hospital referrals remained stable, but GP referrals increased from 99 to 367 (270%) and distance travelled by patients increased from a median of 3.1 km (range 0.1-12.1 km) in 2006 to 4.8 km (range 0.2-19.8 km) in 2008 (p<0.001). Non-local GP referrals increased from 20/99 in 2006 (20%) to 198/367 in 2008 (54%). The increased workload was managed by flexible working by radiologists and two additional sonographers. Departmental waiting time increased for all patients with same-day patients waiting a median of 35 min (interquartile range 19-60 min). Ninety-one percent (79/87) of same-day patients rated the service excellent or good, but many requested better information on the waiting time. CONCLUSION There is a demand from GPs for same-day US, and it is feasible in a large hospital with flexible radiology working and increased sonographic staffing. Unless adjacent hospitals offer a similar service, continuing rise in demand could overwhelm the service.
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Affiliation(s)
- K E Hawtin
- Departments of Radiology, Imperial College NHS Trust, London, UK
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