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Augustine DX, Willis J, Sivalokanathan S, Wild C, Sharma A, Zaidi A, Pearce K, Stuart G, Papadakis M, Sharma S, Malhotra A. Right ventricular assessment of the adolescent footballer's heart. Echo Res Pract 2024; 11:7. [PMID: 38424646 PMCID: PMC10905853 DOI: 10.1186/s44156-023-00039-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 12/11/2023] [Indexed: 03/02/2024] Open
Abstract
INTRODUCTION Athletic training can result in electrical and structural changes of the right ventricle that may mimic phenotypical features of arrhythmogenic right ventricular cardiomyopathy (ARVC), such as T-wave inversion and right heart dilatation. An erroneous interpretation may have consequences ranging from false reassurance in an athlete vulnerable to cardiac arrhythmias, to unnecessary sports restriction in a healthy individual. The primary aim of this study was to define normal RV dimension reference ranges for academy adolescent footballers of different ethnicities. Secondary aims include analysis of potential overlap between this adolescent group with ARVC criteria and comparison with normal adult ranges. RESULTS Electrocardiographic (ECG) and echocardiographic data of 1087 academy male footballers aged between 13 and 18 years old (mean age 16.0 ± 0.5 years), attending mandatory cardiac screening were analysed. Ethnicity was categorised as white (n = 826), black (African/Caribbean; n = 166) and mixed-race (one parent white and one parent black; n = 95). Arrhythmogenic right ventricular cardiomyopathy major criteria for T-wave inversion was seen in 3.3% of the cohort. This was more prevalent in black footballers (12%) when compared to mixed race footballers (6.3%) or white footballers (1%), P < 0.05. Up to 59% of the cohort exceeded adult reference ranges for some of the right ventricular parameters, although values were similar to those seen in adult footballers. There were no differences in right ventricular dimensions between ethnicities. In particular, the right ventricular outflow tract diameter would fulfil major criteria for ARVC dimension in 12% of footballers. Overall, 0.2% of the cohort would fulfil diagnosis for 'definite' arrhythmogenic right ventricular cardiomyopathy and 2.2% would fulfil diagnosis for 'borderline' arrhythmogenic right ventricular cardiomyopathy for RV dimensions and ECG changes. This was seen more frequently in black footballers (9.9%) than mixed race footballers (3.9%) or white footballer (0.6%), P < 0.05. Among athletes meeting definite or borderline arrhythmogenic right ventricular cardiomyopathy criteria, no cardiomyopathy was identified after comprehensive clinical assessment, including with cardiac magnetic resonance imaging, exercise testing, ambulatory electrocardiograms and familial evaluation. CONCLUSION Right heart sizes in excess of accepted adult ranges occurred in as many as one in two adolescent footballers. Structural adaptations in conjunction with anterior T-wave inversion may raise concern for ARVC, highlighting the need for evaluation in expert settings.
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Affiliation(s)
- D X Augustine
- Royal United Hospitals Bath NHS Foundation Trust, Bath, UK
- Department for Health, University of Bath, Bath, UK
| | - J Willis
- Royal United Hospitals Bath NHS Foundation Trust, Bath, UK
| | - S Sivalokanathan
- Division of General Internal Medicine, University of Pennsylvania Health System, Philadelphia, PA, USA
| | - C Wild
- Royal United Hospitals Bath NHS Foundation Trust, Bath, UK
| | - A Sharma
- Cardiovascular Clinical Academic Group, St George's, University of London and St George's University Hospitals NHS Foundation Trust, London, UK
| | - A Zaidi
- University Hospital of Wales, Cardiff, UK
| | - K Pearce
- Institute of Sport, Manchester Metropolitan University and Manchester University NHS Foundation Trust, Manchester, UK
| | - G Stuart
- Heart Institute, University of Bristol, Bristol, UK
| | - M Papadakis
- Division of General Internal Medicine, University of Pennsylvania Health System, Philadelphia, PA, USA
| | - S Sharma
- Division of General Internal Medicine, University of Pennsylvania Health System, Philadelphia, PA, USA
| | - A Malhotra
- Institute of Sport, Manchester Metropolitan University and Manchester University NHS Foundation Trust, Manchester, UK.
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MacLachlan H, Antonakaki A, Bhatia R, Fyazz S, Chatrath N, Androulakis E, Marawaha S, Basu J, Miles C, Dhutia H, Zaidi A, Chandra N, Sheikh N, Gati S, Malhotra A, Finocchiaro G, Sharma S, Papadakis M. Prevalence and Clinical Significance of Electrocardiographic Complete Right Bundle Branch Block in Young Individuals. Eur J Prev Cardiol 2024:zwae082. [PMID: 38412448 DOI: 10.1093/eurjpc/zwae082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/17/2024] [Accepted: 02/23/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND AND AIMS There is limited information on the clinical significance of complete right bundle branch block (CRBBB) in young individuals. The aim of this study was to determine the prevalence and significance of CRBBB in a large cohort of young individuals aged 14-35 years old. METHODS From 2008 to 2018, 104,369 consecutive individuals underwent a cardiovascular assessment with a health questionnaire, electrocardiogram, clinical consultation, and selective echocardiography. Follow-up was obtained via direct telephone consultations. Mean follow-up was 7.3 ± 2.7 years. RESULTS CRBBB was identified in 154 (0.1%) individuals and was more prevalent in males compared with females (0.20% vs. 0.06%; p<0.05) and in athletes compared with non-athletes (0.25% vs. 0.14%; p<0.05). CRBBB-related cardiac conditions were identified in 7 (5%) individuals (4 with atrial septal defect, 1 with Brugada syndrome, 1 with progressive cardiac conduction disease and 1 with atrial fibrillation). Pathology was more frequently identified in individuals with non-isolated CRBBB compared with individuals with isolated CRBBB (14% vs 1%; p < 0.05) and in individuals with a QRS duration of ≥130 milliseconds (ms) compared with individuals with a QRS of <130ms (10% vs 1%; p<0.05). CONCLUSION The prevalence of CRBBB in young individuals was 0.1% and was more prevalent in males and athletes. CRBBB-related conditions were identified in 5% of individuals and were more common in individuals with non-isolated CRBBB and more pronounced intraventricular conduction delay (QRS duration of ≥130ms). Secondary evaluation should be considered for young individuals with CRBBB with symptoms, concerning family history, additional electrocardiographic anomalies or significant QRS prolongation (≥130ms).
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Affiliation(s)
- H MacLachlan
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - A Antonakaki
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - R Bhatia
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - S Fyazz
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - N Chatrath
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - E Androulakis
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - S Marawaha
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - J Basu
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - C Miles
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - H Dhutia
- Department of Cardiology, Glenfield Hospital, Leicester, UK
| | - A Zaidi
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
- Department of Cardiology, University Hospital of Wales, Cardiff, UK
| | - N Chandra
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
- Department of Cardiology, Frimley Park Hospital, London, UK
| | - N Sheikh
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
- Department of Cardiology, Guy's and St Thomas's Hospital, London, UK
| | - S Gati
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
- Department of Cardiology, Royal Brompton & Harefield NHS Foundation Trust, London, UK
| | - A Malhotra
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
- Institute of Sport, Manchester Metropolitan University and University of Manchester, Manchester, UK
| | - G Finocchiaro
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - S Sharma
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
| | - M Papadakis
- Cardiovascular Clinical Academic Group, St George's, University of London, London, UK
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Pearson K, Beier K, Mardis T, Munoz B, Zaidi A. The Neurochemistry of Depression: The Good, The Bad and The Ugly. Mo Med 2024; 121:68-75. [PMID: 38404431 PMCID: PMC10887465] [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] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
A large constellation of experimental evidence suggests that neuroinflammation is involved in the onset of depression and neurodegenerative disorders. Many studies have shown impairments in tryptophan metabolism, the major pathway for the synthesis of serotonin, the mood regulating neurotransmitter. This article reviews the various metabolites generated in the competing pathways of tryptophan metabolism including the kynurenine pathway. Increased synthesis of the neurotoxic compound quinolinic acid occurs at the expense of the synthesis of the neuroprotective metabolite kynurenic acid. This shift in equilibrium plays a critical role in the induction of oxidative stress, neuroinflammation, and neurotoxicity. Sufficient protein intake with adequate amounts of tryptophan along with dietary antioxidants and flavonoids may offer protection against major depressive and neurodegenerative disorders.
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Affiliation(s)
- Kami Pearson
- Research Associate, Kansas City University, Kansas City, Missouri
| | - Kimberley Beier
- Medical student, Kansas City University, Kansas City, Missouri
| | - Thornton Mardis
- Medical student, Kansas City University, Kansas City, Missouri
| | - Bryan Munoz
- Medical student, Kansas City University, Kansas City, Missouri
| | - Asma Zaidi
- Professor of Biochemistry, Kansas City University, Kansas City, Missouri
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Shahzadi K, Bukhari SM, Zaidi A, Wani TA, Jan MS, Zargar S, Rashid U, Farooq U, Khushal A, Khan S. Novel Coumarin Derivatives as Potential Urease Inhibitors for Kidney Stone Prevention and Antiulcer Therapy: From Synthesis to In Vivo Evaluation. Pharmaceuticals (Basel) 2023; 16:1552. [PMID: 38004418 PMCID: PMC10675132 DOI: 10.3390/ph16111552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023] Open
Abstract
The presence of ammonium ions in urine, along with basic pH in the presence of urease-producing bacteria, promotes the production of struvite stones. This causes renal malfunction, which is manifested by symptoms such as fever, nausea, vomiting, and blood in the urine. The involvement of urease in stone formation makes it a good target for finding urease enzyme inhibitors, which have the potential to be developed as lead drugs against kidney stones in the future. The documented ethnopharmacology of coumarin 2-one against bacterial, fungal and viral strains encouraged us to synthesize new derivatives of coumarins by reacting aromatic aldehydes with 4-aminocoumarin. The synthesized compounds (2a to 11a) were evaluated for their antimicrobial, in vitro, and in silico properties against the urease enzyme. The study also covers in vivo determination of the synthesized compounds with respect to different types of induced ulcers. The molecular docking study along with extended MD simulations (100 ns each) and MMPBSA study confirmed the potential inhibitory candidates as evident from computed ∆Gbind (3a = -11.62 and 5a = -12.08 Kcal/mol) against the urease enzyme. The in silico analyses were augmented by an enzymatic assay, which revealed that compounds 3a and 5a had strong inhibitory action, with IC50 of 0.412 µM (64.0% inhibition) and 0.322 µM (77.7% inhibition), respectively, compared to standard (Thiourea) with 82% inhibition at 0.14 µM. Moreover, the most active compound, 5a, was further tested in vivo for antiulcer activity by different types of induced ulcers, including pyloric ligation-, ethanol-, aspirin-, and histamine-induced ulcers. Compound 5a effectively reduced gastric acidity, lipid peroxidation, and ulceration in a rat model while also inhibiting gastric ATPase activity, which makes it a promising candidate for ulcer treatment. As a result of the current research, 3a and 5a may be used as new molecules for developing potent urease inhibitors. Additionally, the compound 3a showed antibacterial activity against Staphylococcus aureus and Salmonella typhimurium, with zones of inhibition of 41 ± 0.9 mm and 35 ± 0.9 mm, respectively. Compound 7a showed antibacterial activity against Staphylococcus aureus and Salmonella typhimurium, with zones of inhibition of 30 ± 0.8 mm and 42 ± 0.8 mm, respectively. These results prove that the synthesized compounds also possess good antibacterial potential against Gram-positive and Gram-negative bacterial strains.
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Affiliation(s)
- Kiran Shahzadi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan; (K.S.); (S.M.B.); (U.R.); (U.F.); (A.K.)
- School of Chemistry and Chemical Engineering Technology, Beijing Institute of Technology, Beijing 100811, China
| | - Syed Majid Bukhari
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan; (K.S.); (S.M.B.); (U.R.); (U.F.); (A.K.)
| | - Asma Zaidi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan; (K.S.); (S.M.B.); (U.R.); (U.F.); (A.K.)
| | - Tanveer A. Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia;
| | - Muhammad Saeed Jan
- Department of Pharmacy, The Professional Institute of Health Sciences, Mardan 23200, KPK, Pakistan
| | - Seema Zargar
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11451, Saudi Arabia;
| | - Umer Rashid
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan; (K.S.); (S.M.B.); (U.R.); (U.F.); (A.K.)
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan; (K.S.); (S.M.B.); (U.R.); (U.F.); (A.K.)
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Aneela Khushal
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan; (K.S.); (S.M.B.); (U.R.); (U.F.); (A.K.)
| | - Sara Khan
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, KPK, Pakistan; (K.S.); (S.M.B.); (U.R.); (U.F.); (A.K.)
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Ali M, Malik K, Zaidi A, Farooq U, Bukhari SM, Majeed Z, Mahnashi MH, Nawazish S, Abdulwahab A, Alshaibari KS. In-vitro high-throughput library screening-Kinetics and molecular docking studies of potent inhibitors of α-glucosidase. PLoS One 2023; 18:e0286159. [PMID: 37390110 PMCID: PMC10313066 DOI: 10.1371/journal.pone.0286159] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 05/09/2023] [Indexed: 07/02/2023] Open
Abstract
High throughput screening of synthetic compounds against vital enzymes is the way forward for the determination of potent enzyme inhibitors. In-vitro high throughput library screening of 258 synthetic compounds (comp. 1-258), was performed against α-glucosidase. The active compounds out of this library were investigated for their mode of inhibition and binding affinities towards α-glucosidase through kinetics as well as molecular docking studies. Out of all the compounds selected for this study, 63 compounds were found active within the IC50 range of 3.2 μM to 50.0 μM. The most potent inhibitor of α-glucosidase out of this library was the derivative of an oxadiazole (comp. 25). It showed the IC50 value of 3.23 ± 0.8 μM. Other highly active compounds were the derivatives of ethyl-thio benzimidazolyl acetohydrazide with IC50 values of 6.1 ± 0.5 μM (comp. 228), 6.84 ± 1.3 μM (comp. 212), 7.34 ± 0.3 μM (comp. 230) and 8.93 ± 1.0 μM (comp. 210). For comparison, the standard (acarbose) showed IC50 = 378.2 ± 0.12 μM. Kinetic studies of oxadiazole (comp. 25) and ethylthio benzimidazolyl acetohydrazide (comp. 228) derivatives indicated that Vmax and Km, both change with changing concentrations of inhibitors which suggests an un-competitive mode of inhibition. Molecular docking studies of these derivatives with the active site of α-glucosidase (PDB ID:1XSK), revealed that these compounds mostly interact with acidic or basic amino acid residues through conventional hydrogen bonds along with other hydrophobic interactions. The binding energy values of compounds 25, 228, and 212 were -5.6, -8.7 and -5.4 kcal.mol-1 whereas RMSD values were 0.6, 2.0, and 1.7 Å, respectively. For comparison, the co-crystallized ligand showed a binding energy value of -6.6 kcal.mol-1 along with an RMSD value of 1.1 Å. Our study predicted several series of compounds as active inhibitors of α-glucosidase including some highly potent inhibitors.
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Affiliation(s)
- Majid Ali
- Department of Chemistry, COMSATS University Islamabad, KPK, Abbottabad, Pakistan
- Department of Chemistry, Higher Education Department, Government Postgraduate College No.1, Abbottabad, KP, Pakistan
| | - Khuram Malik
- Department of Chemistry, COMSATS University Islamabad, KPK, Abbottabad, Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS University Islamabad, KPK, Abbottabad, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, KPK, Abbottabad, Pakistan
| | - Syed Majid Bukhari
- Department of Chemistry, COMSATS University Islamabad, KPK, Abbottabad, Pakistan
| | - Zahid Majeed
- Faculty of Science, Department of Biotechnology, The University of Azad Jammu and Kashmir, Chehla Campus, Muzaffarabad, Pakistan
| | - Mater H. Mahnashi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Shamyla Nawazish
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
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Majeed Z, Nawazish S, Baig A, Akhtar W, Iqbal A, Muhammad Khan W, Majid Bukhari S, Zaidi A, Loke Show P, Mansoor N. Effect of varying thickness properties of the slow release fertilizer films on morphology, biodegradability, urea release, soil health, and plant growth. PLoS One 2023; 18:e0278568. [PMID: 36848343 PMCID: PMC9970067 DOI: 10.1371/journal.pone.0278568] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 11/15/2022] [Indexed: 03/01/2023] Open
Abstract
Green biomass is a renewable and biodegradable material that has the potential use to trap urea to develop a high-efficiency urea fertilizer for crops' better performance. Current work examined the morphology, chemical composition, biodegradability, urea release, soil health, and plant growth effects of the SRF films subjected to changes in the thickness of 0.27, 0.54, and 1.03 mm. The morphology was examined by Scanning Electron Microscopy, chemical composition was analyzed by Infrared Spectroscopy, and biodegradability was assessed through evolved CO2 and CH4 quantified through Gas Chromatography. The chloroform fumigation technique was used for microbial growth assessment in the soil. The soil pH and redox potential were also measured using a specific probe. CHNS analyzer was used to calculate the total carbon and total nitrogen of the soil. A plant growth experiment was conducted on the Wheat plant (Triticum sativum). The thinner the films, the more they supported the growth and penetration of the soil's microorganisms mainly the species of fungus possibly due to the presence of lignin in films. The fingerprint regions of the infrared spectrum of SRF films showed all films in soil changed in their chemical composition due to biodegradation but the increase in the thickness possibly provides resistance to the films' losses. The higher thickness of the film delayed the rate and time for biodegradation and the release of methane gas in the soil. The 1.03 mm film (47% in 56 days) and 0.54 mm film (35% in 91 days) showed the slowest biodegradability as compared to the 0.27 mm film with the highest losses (60% in 35 days). The slow urea release is more affected by the increase in thickness. The Korsymer Pappas model with release exponent value of < 0.5 explained the release from the SRF films followed the quasi-fickian diffusion and also reduced the diffusion coefficient for urea. An increase in the pH and decrease in the redox potential of the soil is correlated with higher total organic content and total nitrogen in the soil in response to amending SRF films with variable thickness. Growth of the wheat plant showed the highest average plant length, leaf area index and grain per plant in response to the increase in the film's thickness. This work developed an important knowledge to enhance the efficiency of film encapsulated urea that can better slow the urea release if the thickness is optimized.
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Affiliation(s)
- Zahid Majeed
- Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
- * E-mail:
| | - Shamyla Nawazish
- Department of Environmental Sciences, COMSATS University, Islamabad, Abbottabad, Khyber Pakhtunkhwa, Pakistan
| | - Ayesha Baig
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad, Khyber Pakhtunkhwa, Pakistan
| | - Wasim Akhtar
- Department of Botany, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Atia Iqbal
- Department of Microbiology and Molecular Genetics, The Women University, Multan, Pakistan
| | - Wisal Muhammad Khan
- Department of Botany, Islamia College University, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Syed Majid Bukhari
- Department of Chemistry, COMSATS University, Islamabad, Abbottabad, Khyber Pakhtunkhwa, Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS University, Islamabad, Abbottabad, Khyber Pakhtunkhwa, Pakistan
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, University of Nottingham, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Nurlidia Mansoor
- Chemical Engineering Department, Universiti Teknologi PETRONAS, Seri Iskandar, Perak Darul Ridzuan, Malaysia
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Bukhari SM, Sarwar R, Zaidi A, Ali M, Khan FA, Farooq U, Uddin J, Ibrar A, Khan A, Al-Harrasi A. Some of the organic ligand transition metal complexes can serve as potent α-glucosidase inhibitors: in-vitro, kinetics and in-silico studies. INORG NANO-MET CHEM 2023. [DOI: 10.1080/24701556.2023.2183219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Affiliation(s)
- Syed Majid Bukhari
- Department of Chemistry, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Rizwana Sarwar
- Department of Chemistry, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Majid Ali
- Department of Chemistry, COMSATS University Islamabad, Abbottabad, Pakistan
- Department of Chemistry, Government Postgraduate College No. 1, Abbottabad, Pakistan
| | - Farhan A. Khan
- Department of Chemistry, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad, Pakistan
| | - Jalal Uddin
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Aliya Ibrar
- Department of Chemistry, Faculty of Natural Sciences, The University of Haripur, Haripur, Pakistan
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
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Hall JA, Harris RJ, Zaidi A, Dabrera G, Dunbar JK. Risk of hospitalisation or death in households with a case of COVID-19 in England: an analysis using the HOSTED data set. Public Health 2022; 211:85-87. [PMID: 36058199 PMCID: PMC9359490 DOI: 10.1016/j.puhe.2022.07.013] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/16/2022] [Accepted: 07/19/2022] [Indexed: 11/18/2022]
Abstract
Objective To determine whether household contacts of confirmed cases of COVID-19 have an increased risk of hospitalisation or death. Methods We used the HOSTED data set of index cases of COVID-19 in England between June and November 2020, linked to Secondary Uses Service data on hospital episodes and Office for National Statistics’ mortality data. Multivariable logistic regression models of the odds of household contacts being hospitalised or dying within six weeks of an index case, adjusted for case type, age, sex and calendar month were calculated. Excess risk was determined by comparing the first six weeks after the index case with 6–12 weeks after the index case in a survival analysis framework. Results Index cases were more likely to be hospitalised or die than either secondary cases or non-cases, having adjusted for age and sex. There was an increased risk of hospitalisation for non-cases (adjusted hazard ratio (aHR) 1.10; 95% confidence interval (CI) 1.04, 1.16) and of death (aHR 1.57; 95% CI 1.14, 2.16) in the first six weeks after an index case, compared to 6–12 weeks after. Conclusion Risks of hospitalisation and mortality are predictably higher in cases compared to non-cases. The short-term increase in risks for non-case contacts following diagnosis of the index case may suggest incomplete case ascertainment among contacts, although this was relatively small.
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Affiliation(s)
- J A Hall
- UK Health Security Agency, London, UK
| | | | - A Zaidi
- UK Health Security Agency, London, UK
| | - G Dabrera
- UK Health Security Agency, London, UK
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Saleem A, Farooq U, Bukhari SM, Khan S, Zaidi A, Wani TA, Shaikh AJ, Sarwar R, Mahmud S, Israr M, Khan FA, Shahzad SA. Isoxazole Derivatives against Carbonic Anhydrase: Synthesis, Molecular Docking, MD Simulations, and Free Energy Calculations Coupled with In Vitro Studies. ACS Omega 2022; 7:30359-30368. [PMID: 36061660 PMCID: PMC9434621 DOI: 10.1021/acsomega.2c03600] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/02/2022] [Indexed: 05/28/2023]
Abstract
Heterocyclic compounds with a five-membered ring as a core, particularly those containing more than one heteroatom, have a wide spectrum of biological functions, especially in enzyme inhibition. In this study, we present the synthesis of five-membered heterocyclic isoxazole derivatives via sonication of ethyl butyrylacetate with aromatic aldehyde in the presence of a SnII-Mont K10 catalyst. The synthesized compounds were characterized using sophisticated spectroscopic methods. In vitro testing of the compounds reveals three derivatives with significant inhibitory action against carbonic anhydrase (CA) enzyme. The compound AC2 revealed the most promising inhibitory activity against CA among the entire series, with an IC50 = 112.3 ± 1.6 μM (%inh = 79.5) followed by AC3 with an IC50 = 228.4 ± 2.3 μM (%inh = 68.7) compared to the standard with 18.6 ± 0.5 μM (%inh = 87.0). Molecular docking (MD) study coupled with extensive MD simulations (400 ns) and MMPBSA study fully supported the in vitro enzyme inhibition results, evident from the computed ΔG bind (AC2 = -13.53 and AC3 = -12.49 kcal/mol). The in vitro and in silico studies are also augmented by a fluorescence-based enzymatic assay in which compounds AC2 and AC3 showed significant fluorescence enhancement. Therefore, on the basis of the present study, it is inferred that AC2 and AC3 may serve as a new framework for designing effective CA inhibitors.
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Affiliation(s)
- Afia Saleem
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
| | - Umar Farooq
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
| | - Syed Majid Bukhari
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
| | - Sara Khan
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
| | - Asma Zaidi
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
| | - Tanveer A. Wani
- Department
of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahson Jabbar Shaikh
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
| | - Rizwana Sarwar
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
| | - Shafi Mahmud
- Division
of Genome Sciences and Cancer, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT 2601, Australia
| | - Muhammad Israr
- Pakistan
Science Foundation, 1-Constitution Avenue, G-5/2, Islamabad 44000, Pakistan
| | - Farhan A. Khan
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
| | - Sohail Anjum Shahzad
- Department
of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22010, KPK, Pakistan
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10
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Saleem A, Younas U, Majid Bukhari S, Zaidi A, Khan S, Saeed Z, Pervaiz M, Muhammad G, Shaheen S. Antioxidant and cytotoxic activities of different solvent fractions from Murraya koenigii shoots: HPLC quantification And molecular docking of identified phenolics with anti-apoptotic proteins. B CHEM SOC ETHIOPIA 2022. [DOI: 10.4314/bcse.v36i3.14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
ABSTRACT. Murraya koenigii is known for its health benefits against constipation, diarrhea, bacterial infections, wounds and skin related diseases. Aim of this project is to determine cytotoxic aptitude of antioxidant compounds present in M. koenigii. The fractionation of M. koenigii shoots methanol extract was carried out with different solvents followed by determination of total phenolic content, radical scavenging potential along with phenolic profile. M. koenigii shoot fractions were analyzed for their cytotoxic potential by MTT assay besides evaluating molecular interactions between identified phenolics with Bcl-2, Bcl-xl and MCL-1. The results revealed that butanol fraction contains maximum amount of quercetin, 4-hydroxy-3-methoxy benzoic acid and trans-4-hydroxy-3-methoxy cinnamic acid. Ferulic acid is abundant in water fraction whereas n-hexane fractions contain sinapic and vanillic acids. The ethyl acetate fraction possess the highest level of phenolics as well as radical scavenging potential. HPLC results show that 9 organic acids are present in ethyl acetate and butanol fractions. The highest cytotoxic activity was exhibited by n-hexane and ethyl acetate fractions. Molecular docking studies supports that ethyl acetate and n-hexane fractions are the major sources of antioxidant and cytotoxic compounds. Also, molecular interactions exist between identified phenolics from plant shoots fractions with anti-apoptotic proteins Bcl-2, Bcl-xl and MCL-1.
KEY WORDS: Morraya koenigii, Fractionation, Antioxidant, Cytotoxic, Molecular docking
Bull. Chem. Soc. Ethiop. 2022, 36(3), 651-666.
DOI: https://dx.doi.org/10.4314/bcse.v36i3.14
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11
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Ambur A, Zaidi A, Dunn C, Nathoo R. Impaired Calcium Signaling and Neuropsychiatric Disorders in Darier Disease: An Exploratory Review. Exp Dermatol 2022; 31:1302-1310. [PMID: 35801378 DOI: 10.1111/exd.14642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/27/2022] [Accepted: 07/05/2022] [Indexed: 11/28/2022]
Abstract
Darier (Darier-White) disease (DD) is an autosomal dominant skin disorder caused by pathogenic mutations in the ATP2A2 gene which encodes a calcium ATPase in the sarco-endoplasmic reticulum (SERCA2). Defects in the SERCA2 protein leads to an impairment of cellular calcium homeostasis, which in turn, triggers cell death pathways. There is a high prevalence of neuropsychiatric disorders in patients affected by this condition, namely intellectual disability, bipolar disorder, schizophrenia, and suicidality. Though these associations have been well-documented over the years, little has been discussed or investigated regarding the pathophysiological mechanisms. The goal of this article is to review the literature related to the most commonly associated neuropsychiatric disorders found in patients with DD, highlight the pathophysiological mechanisms underlying each condition, and examine potential interventions that may be of interest for future development. A literature search was performed using PubMed to access and review relevant articles published in the last 40 years. Keywords searched included Darier disease neuropsychiatric, Darier disease pathophysiology, SERCA2 central nervous system, SERCA 2 skin, ATP2A2 central nervous system, ATP2A2 skin, sphingosine-1-phosphate signaling skin, sphingosine-1-phosphate signaling central nervous system, P2X7 receptor skin, and P2X7 receptor central nervous system. Our search resulted in 2,692 articles, of which 61 articles were ultimately included in this review.
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Affiliation(s)
- Austin Ambur
- Department of Dermatology, Kansas City University
| | - Asma Zaidi
- Department of Basic Sciences, Kansas City University
| | - Charles Dunn
- Department of Dermatology, Kansas City University
| | - Rajiv Nathoo
- Department of Dermatology, Kansas City University
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12
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Ali M, Zaidi A, Farooq U, Bukhari SM. Screening and Structure-Activity Relationship of Potential Compounds
against Proposed Targets of COVID-19 Infection. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180818666210930154641] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
With reference to COVID-19 pandemic prevailing across the globe, chloroquine
and hydroxychloroquine were reported as effective against the disease to some extent. This effectiveness
can be attributed to the glycosylation interruption of the Angiotensin-converting enzyme 2 (ACE2) receptor,
which is a known target for SARS-CoV-2 entery. On the other hand, studies suggest that the inhibition
of ACE2 can be lethal in certain cases, thereby causing cardiovascular disorders, especially in patients
already suffering from heart-related diseases.
Methods:
In this study, the most probable targets (other than ACE2) have been proposed for the treatment
of COVID-19 infection by taking chloroquine and hydroxychloroquine as reference drugs. SwissTargetPrediction
and PASSonline tools were used in order to achieve this objective. Known drugs against
each target possessing close relation to either viral infections or lung disorders were assessed from the
DrugBank database, and simultaneous efficacy of these drugs towards other proposed targets has been
analyzed. By taking the most effective drugs as a reference, similar compounds were screened from the
ChEMBL library by using the SwissSimilarity tool. Finally, molecular docking studies were performed
through MOE software by using screened compounds against proposed targets.
Results:
Four most probable targets have been proposed, which include chemokine receptors (CCRs),
dipeptidyl peptidase 4 (DPP4), muscarinic acetylcholine receptors (CHRMs), and histamine Nmethyltransferase
(HNMT). Furthermore, it has been evaluated that quinacrine and vildagliptin are effective
against most of the proposed targets. By taking vildagliptin as well as quinacrine as reference drugs,
further eight compounds with similar effectiveness against these targets have been screened from the
ChEMBL library. Molecular docking studies with CCR5, DPP4, and CHRM5 suggest that the quinacrine
and its analogue (ChEMBL1782742) as well as vildagliptin and its analogue (ChEMBL511785) are the
most suitable compounds as HITs for these targets.
Conclusions:
It has been established that the quinacrine, ChEMBL1782742, vildagliptin,
ChEMBL511785, mavorixafor, atropine, and N-(2-aminoethyl)-1-aziridineethanamine in descending
order can be considered as effective drugs for the treatment of COVID-19 infection.
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Affiliation(s)
- Majid Ali
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK, Pakistan
- Department
of Chemistry, Government Postgraduate College No.1, Abbottabad, KPK, Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK, Pakistan
| | - Syed Majid Bukhari
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK, Pakistan
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13
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Javed MA, Bibi S, Jan MS, Ikram M, Zaidi A, Farooq U, Sadiq A, Rashid U. Diclofenac derivatives as concomitant inhibitors of cholinesterase, monoamine oxidase, cyclooxygenase-2 and 5-lipoxygenase for the treatment of Alzheimer's disease: synthesis, pharmacology, toxicity and docking studies. RSC Adv 2022; 12:22503-22517. [PMID: 36105972 PMCID: PMC9366597 DOI: 10.1039/d2ra04183a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 07/06/2022] [Accepted: 08/03/2022] [Indexed: 12/25/2022] Open
Abstract
Targeting concomitantly cholinesterase (ChEs) and monoamine oxidases (MAO-A and MAO-B) is one of the key strategies to treat multifactorial Alzheimer's disease (AD).
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Affiliation(s)
- Muhammad Aamir Javed
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, Pakistan
| | - Saba Bibi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, Pakistan
| | | | - Muhammad Ikram
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, Pakistan
| | - Abdul Sadiq
- Department of Pharmacy, Faculty of Biological Sciences, University of Malakand, Chakdara, 18000 Dir (L), KP, Pakistan
| | - Umer Rashid
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, Pakistan
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14
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Ali M, Zaidi A, Farooq U, Sarwar R, Bukhari SM. Computational Studies on Isolated Compounds of Sclerochloa dura; their Efficacy towards Carbonic Anhydrase Inhibition and Anti-cancer Drug Targets. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180818666210719125810] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
In the previous study, we reported the isolation of six compounds from
Sclerochloa dura and their in-vitro anti-inflammatory potential by their ability to inhibit phospholipase
A2 (PLA2). The objective of current study is to inspect the effect of these compounds on other
expected targets.
Methods:
For this purpose, various targets and percentage activities are predicted through CoFFer
(QSAR) web service. All six compounds under investigation represented 99-100% activity towards
carbonic anhydrases (CAs) and 90-100% activity towards anti-cancer drug targets. As active site of
most of the carbonic anhydrase isozymes is conserved, we selected cytosolic human carbonic anhydrase
II (hCA II) for docking studies which is ubiquitous and involved in various human disorders
such as glaucoma, pulmonary edema and epilepsy. Anticancer drug targets include vascular endothelial
growth factor receptor 2 (VEGFR2), glucocorticoid receptor (GR) and tyrosine protein kinase (c-
SRC). Interaction of these compounds with hCA II (PDB ID:3P4V) and anti-cancer drug targets such
as VEGFR2 (ID:3WZD), GR (ID:5G5W) and c-SRC (ID:2SRC), were analyzed through molecular
docking studies using MOE (Molecular Operating Environment).
Results:
The findings suggested that most of these compounds represent excellent binding affinity
with hCA II by making interaction with zinc-coordinated water molecule through sulfonic acid group
or hydroxyl group present in the compounds. Similarly, five out of six compounds represented excellent
interaction with VEGFR2. Interactions with GR indicated that compounds 2, 3, and 6 bind effectively
as compared to their co-crystallized ligands. However, among these, the excellent binding
affinity with c-SRC was demonstrated by compounds 3 and 6.
Conclusion:
This study revealed that all these compounds exhibited excellent interaction with the
active site of hCA II, however in the light of previously reported data and due to membrane barrier,
only compound 1 (due to long hydrophobic tail) and compound 4 (due to absence of bulky carbohydrate
groups), can only penetrate inside the cytosol. Compounds 2, 3, 4, and 6 containing bulky carbohydrate
moieties cannot penetrate inside the cell, therefore, they might have selective nature towards
membrane-bounded tumor-associated hCA IX. This anti-tumor property of compounds was
also proved by docking studies with VEGFR2, GR and c-SRC. Therefore, these compounds may
have synergistic effects against inflammation and cancer. The ADMET studies show that compounds
have moderate absorption and permeability along with slight toxicity.
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Affiliation(s)
- Majid Ali
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Rizwana Sarwar
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Syed Majid Bukhari
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
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15
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Jung W, Mondoly P, Leclercq C, Bordachar P, Pasquie J, Johansen J, Zaidi A, Keilegavlen H, Mansourati J, Nof E, Theis C, Roberts P, Stromberg K, Fagan D, Garweg C. Leadless pacemaker implant in patients requiring CIED extraction: outcomes based upon timing of extraction. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0615] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Previous results from global Micra Transcatheter Pacemaker clinical trials have demonstrated leadless pacing as a safe and attractive option for patients with prior cardiac implantable electronic device (CIED) infection and extraction. Whether outcomes differ based upon the timing of prior device extraction has not been studied.
Purpose
To describe characteristics and outcomes of patients undergoing CIED extraction during or prior to Micra implantation.
Methods
Patients who underwent CIED explant and Micra implantation were identified from the Micra Post-Approval Registry and Micra Acute Performance studies. Baseline characteristics were summarized. A Fine-Gray competing risk model was used to compare risk for major complication through 24 months.
Results
Of the 2739 patients included in the studies, 99 (3.6%) patients had CIED extraction the day of Micra implantation (same day) and 127 (4.6%) patients had CIED extraction within 30 days prior to Micra implantation (prior). Although infection was the primary reason for CIED extraction in both groups, a larger proportion of prior patients underwent extraction for this reason (87.4% vs. 42.4%). In contrast, more same day patients underwent CIED extraction for physician/elective reasons (16.2% vs. 3.1%). Same day patients prior device history included pacemaker (42 dual chamber and 30 single chamber), ICD (1 single chamber and 4 dual chamber), CRT (7 CRT-ICD and 13 CRT-P) while prior patients device history included pacemaker (29 single chamber, 80 dual chamber), ICD (3 dual chamber), CRT (5 CRT-ICD and 7 CRT-P). Overall, patients with extraction were aged 72.8±14.3 years, predominantly male (65.9%), and medical history was similar between groups, with the exception to CHF, which was higher for the same day group (18.2% vs 6.3%, P=0.021). The implant success rate was 98.0% for same day patients and 100% for prior patients. Median procedure duration was not significantly different between the groups (26.0 minutes and 25.0 minutes for same day and prior, respectively). Average follow-up duration was 16.5±13.8 months (range 0–53.4) for same day patients and 18.2±15.2 months (range 0–58.3) for subsequent patients. The rate of acute major complications (<30 days) was 5.1% for same day and 3.2% for prior. Through 24 months, the rate of major complications was 6.4% for same day and 6.0% for prior (HR: 1.19, 95% CI: 0.40 – 3.50, P=0.76, Figure). The rate of major complications related to infection was low and did not differ by group (1.01% vs. 1.57%, P=1.00)
Conclusion
The Micra leadless pacemaker was implanted with a high success rate following CIED extraction. Outcomes following CIED extraction appear similar, whether the extraction is performed during or prior to Micra implant.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): Medtronic, Inc. Risk of major complications
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Affiliation(s)
- W Jung
- Department of Cardiology, Academic Hospital Villingen, Villingen-Schwenningen, Germany
| | - P Mondoly
- University Hospital of Toulouse, Toulouse, France
| | - C Leclercq
- Hospital Pontchaillou of Rennes, Rennes, France
| | - P Bordachar
- University Hospital of Bordeaux, Bordeaux, France
| | - J.L Pasquie
- University of Montpellier, Montpellier, France
| | | | - A Zaidi
- Central Manchester University Hospitals NHS Foundation Trust, Manchester, United Kingdom
| | | | | | - E Nof
- Sheba Medical Center, Tel Aviv, Israel
| | - C Theis
- Johannes Gutenberg University Mainz (JGU), Mainz, Germany
| | - P.R Roberts
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - K Stromberg
- Medtronic, Mounds View, United States of America
| | - D.H Fagan
- Medtronic, Mounds View, United States of America
| | - C Garweg
- University Hospitals (UZ) Leuven, Leuven, Belgium
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16
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Powell N, Chaudhary S, Zaidi A. It Is Time for an Oil Change: Polyunsaturated Fatty Acids and Human Health. Mo Med 2021; 118:426-430. [PMID: 34658434 PMCID: PMC8504507] [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] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Polyunsaturated fatty acids (PUFAs) such as docosahexaneoic acid (DHA) and eicosapentaneoic acid (EPA), play a critical role in a variety of neuronal functions, including facilitating neuronal growth and differentiation, increasing the density of the neuritic network, modulating cell membrane fluidity, regulating intracellular signaling and gene expression, and exhibiting antioxidant characteristics. Dietary DHA is selectively enriched and actively retained in the central nervous system, mainly in synaptic membranes, dendrites, and photoreceptors. In this review, we highlight the myriad roles of PUFAs in brain function and human health. Diets rich in DHA are inversely proportional to cognitive decline and incidence of neurodegenerative disorders. Conversely, diets deficient in DHA impair the proper development of brain and the visual system in children and increase risk of brain disorders in the elderly. Finally, DHA and EPA have been shown to reduce inflammation and may prove to be beneficial in reducing the severity of the SARS-COVID infection.
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Affiliation(s)
- Natalie Powell
- Medical student at Kansas City University College of Osteopathic Medicine (KCU-COM)
| | | | - Asma Zaidi
- Vice Chair of Basic Sciences and Professor of Biochemistry at KCU-COM, Kansas City Campus, Kansas City, Missouri
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17
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Pettit N, Doehring M, O'Neill B, Zaidi A. 81 Use of Adhesive Tape to Facilitate Optimal Mask Positioning and Use in the Emergency Department: A Randomized Controlled Trial. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.07.083] [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: 10/20/2022]
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18
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Hall JA, Harris RJ, Zaidi A, Woodhall SC, Dabrera G, Dunbar JK. HOSTED-England's Household Transmission Evaluation Dataset: preliminary findings from a novel passive surveillance system of COVID-19. Int J Epidemiol 2021; 50:743-752. [PMID: 33837417 PMCID: PMC8083300 DOI: 10.1093/ije/dyab057] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Household transmission of SARS-CoV-2 is an important component of the community spread of the pandemic. Little is known about the factors associated with household transmission, at the level of the case, contact or household, or how these have varied over the course of the pandemic. METHODS The Household Transmission Evaluation Dataset (HOSTED) is a passive surveillance system linking laboratory-confirmed COVID-19 cases to individuals living in the same household in England. We explored the risk of household transmission according to: age of case and contact, sex, region, deprivation, month and household composition between April and September 2020, building a multivariate model. RESULTS In the period studied, on average, 5.5% of household contacts in England were diagnosed as cases. Household transmission was most common between adult cases and contacts of a similar age. There was some evidence of lower transmission rates to under-16s [adjusted odds ratios (aOR) 0.70, 95% confidence interval (CI) 0.66-0.74). There were clear regional differences, with higher rates of household transmission in the north of England and the Midlands. Less deprived areas had a lower risk of household transmission. After controlling for region, there was no effect of deprivation, but houses of multiple occupancy had lower rates of household transmission [aOR 0.74 (0.66-0.83)]. CONCLUSIONS Children are less likely to acquire SARS-CoV-2 via household transmission, and consequently there was no difference in the risk of transmission in households with children. Households in which cases could isolate effectively, such as houses of multiple occupancy, had lower rates of household transmission. Policies to support the effective isolation of cases from their household contacts could lower the level of household transmission.
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Affiliation(s)
- J A Hall
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
- UCL Institute for Women’s Health, London, United Kingdom
| | - R J Harris
- Statistics, Modelling and Economics Department, Public Health England, London, United Kingdom
| | - A Zaidi
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
| | - S C Woodhall
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
| | - G Dabrera
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
| | - J K Dunbar
- COVID-19 Epidemiology Cell, Public Health England, London, United Kingdom
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19
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Zaidi A, Liszewski W. 302 Improved survival outcomes in Merkel cell carcinoma on the basis of anatomic location. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.324] [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: 10/21/2022]
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20
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Ali M, Bukhari SM, Zaidi A, Khan FA, Rashid U, Tahir N, Rabbani B, Farooq U. Inhibition Profiling of Urease and Carbonic Anhydrase II by High- Throughput Screening and Molecular Docking Studies of Structurally Diverse Organic Compounds. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999201005200505] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background::
Structurally diverse organic compounds and available drugs were screened
against urease and carbonic anhydrase II in a formulation acceptable for high-throughput screening.
Objective:
The study was conducted to find out potential inhibitors of urease and carbonic anhydrase
II.
Methods::
Quantification of the possible HITs was carried out by determining their IC50 values.
Results:
The results of several screened compounds, including derivatives of oxadiazole, coumarins,
chromane-2, 4-diones and metal complexes of cysteine-omeprazole showed promising inhibitory
activities with IC50 ranging from 47 μM to 412 μM against the urease. The interactions of active
compounds with active sites of enzymes were investigated through molecular docking studies
which revealed that (R)-1-(4-amino-4-(5-(thiophen-2-yl)-1,3,4-oxadiazol-2-yl) butyl) guanidine
possessing IC50 of 47 μM interacts with one of the nickel metal atoms of urease besides further
interactions as predictable hydrogen bonds with KCX490, Asp633, His492, His407 and His409
along with Ala440 and 636. Bi-ligand metal complexes of 4-aminoantipyrine based Schiff bases
showed activation of urease with AC50 ranging from 68 μM to 112 μM. Almost 21 compounds with
varying functional groups including pyrimidines, oxadiazoles, imidazoles, hydrazides and tin based
compounds were active carbonic anhydrase II inhibitors presenting 98 μM to 390 μM IC50 values.
Several N-substituted sulfonamide derivatives were inactive against carbonic anhydrase II.
Conclusion::
Among all the screened compounds, the highly active inhibitor of carbonic anhydrase
II was (4-(3-hydroxyphenyl)-6-phenyl-2-thioxo-1,2,3,4-tetrahydropyrimidin-5-yl)phenyl) methanone
with IC50 of 98.0 μM. This particular compound showed metallic interaction with Zn ion of
carbonic anhydrase II through the hydroxyl group of the phenyl ring.
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Affiliation(s)
- Majid Ali
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Syed Majid Bukhari
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Farhan A. Khan
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Umer Rashid
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Neelum Tahir
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Baseerat Rabbani
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus-22060, KPK,Pakistan
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21
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Ahmed F, Taylor J, Green C, Wickwar L, Zaidi A, Cunnington C, Motwani M. P323Triage-HF Plus: identification of heart failure and non-heart failure events in an ambulatory population using remote monitoring and the triage heart failure risk score Algorithm. Europace 2020. [DOI: 10.1093/europace/euaa162.071] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background/introduction
Previous studies examining the utility of cardiac implantable electronic devices (CIEDs) to remotely monitor heart failure patients for decompensation have not demonstrated an impact on hard end-points. However, a key limitation of these prior studies (REM-HF and MORE-CARE) has been the failure to stratify patients according to their risk of worsening heart failure (WHF) prior to randomization (usual care vs active monitoring). We examined a different approach, using a single manufacturer’s remote monitoring platform, whereby only patients with CIED-derived data indicating the highest risk of WHF are contacted for assessment. The validated ‘Triage Heart Failure Risk Score’ (Triage-HFRS) is a medical algorithm within Medtronic CIEDs that can risk-stratify patients as low-, medium- or high-risk of WHF in the next 30 days based on integrated monitoring of physiological parameters.
Purpose
This study is the largest prospective evaluation of the Triage-HFRS, and examines the additional role of contacting those patients with a ‘High-Risk’ Triage-HFRS alert by telephone (Triage-HF Plus pathway).
Methods
Prospective, real-world evaluation of the Triage-HF Plus pathway undertaken between June 2016 and September 2019. 326 high-risk Triage-HFRS transmissions were contacted for telephone triage assessment. Screening questions were designed to identify episodes of WHF and non-heart failure events. Interventions were at the discretion of the clinical practitioner and in line with guideline-directed practice. An additional 3-month consecutive sample of low and medium Triage-HFRS transmissions (control group) were also contacted for telephone triage assessment (n= 98).
Results
Successful telephone contact was made following 245 high-risk Triage-HFRS alerts. Following contact, 194 (79.1%) patients reported an acute medical issue: 137 (70.6%) reported symptoms consistent with worsening heart failure (WHF) requiring intervention; and 57 (29.4%) had an alternative acute medical problem. 51 (26.2%) had no apparent reason for the high score. The sensitivity and specificity of CIED-based remote monitoring to identify any HF and non-HF events requiring intervention was 99.5% (97.2-99.9%) and 65.5% (57.3-73.2%) respectively; positive predictive value was 79.2%. The negative predictive value of a non-high risk score to rule out an acute event was 98.9%. Overall accuracy of the pathway to identify an acute issue (HF or non-HF related) was 84.8%.
Conclusion
The Triage-HF Plus clinical pathway is a potentially useful remote monitoring tool for patients with heart failure. The pathway has high diagnostic accuracy to identify patients with WHF and a wide range of non-HF issues which are just as relevant in a population who often have multiple complex co-morbidities and are known for their high health care utilisation.
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Affiliation(s)
- F Ahmed
- Manchester University NHS Foundation Trust, Manchester, United Kingdom of Great Britain & Northern Ireland
| | - J Taylor
- Manchester Academic Health Sciences Centre, Manchester, United Kingdom of Great Britain & Northern Ireland
| | - C Green
- Manchester University NHS Foundation Trust, Manchester, United Kingdom of Great Britain & Northern Ireland
| | - L Wickwar
- Manchester University NHS Foundation Trust, Manchester, United Kingdom of Great Britain & Northern Ireland
| | - A Zaidi
- Manchester University NHS Foundation Trust, Manchester, United Kingdom of Great Britain & Northern Ireland
| | - C Cunnington
- Manchester University NHS Foundation Trust, Manchester, United Kingdom of Great Britain & Northern Ireland
| | - M Motwani
- Manchester University NHS Foundation Trust, Manchester, United Kingdom of Great Britain & Northern Ireland
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22
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Saleem A, Bukhari SM, Zaidi A, Farooq U, Ali M, Khan A, Khan S, Shah KH, Mahmood A, Khan FA. Enzyme inhibition and antibacterial potential of 4-Hydroxycoumarin derivatives. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000418654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | | | | | - Majid Ali
- COMSATS University Islamabad, Pakistan
| | - Asma Khan
- Matter Chinese Academy of Science, China
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Le DM, Ahmed S, Ahmed S, Brunet B, Davies J, Doll C, Ferguson M, Ginther N, Gordon V, Hamilton T, Hebbard P, Helewa R, Kim CA, Lee-Ying R, Lim H, Loree JM, McGhie JP, Mulder K, Park J, Renouf D, Wong RPW, Zaidi A, Asif T. Report from the 20th annual Western Canadian Gastrointestinal Cancer Consensus Conference; Saskatoon, Saskatchewan; 28-29 September 2018. Curr Oncol 2019; 26:e773-e784. [PMID: 31896948 PMCID: PMC6927778 DOI: 10.3747/co.26.5517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The 20th annual Western Canadian Gastrointestinal Cancer Consensus Conference was held in Saskatoon, Saskatchewan, 28-29 September 2018. This interactive multidisciplinary conference is attended by health care professionals from across Western Canada (British Columbia, Alberta, Saskatchewan, and Manitoba) who are involved in the care of patients with gastrointestinal cancers. In addition, invited speakers from other provinces participate. Surgical, medical, and radiation oncologists, and allied health care professionals participated in presentations and discussion sessions for the purpose of developing the recommendations presented here. This consensus statement addresses current issues in the management of colorectal cancers.
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Affiliation(s)
- D M Le
- Saskatoon Cancer Centre, Saskatchewan Cancer Agency, Saskatoon, SK
| | - S Ahmed
- Saskatoon Cancer Centre, Saskatchewan Cancer Agency, Saskatoon, SK
| | - S Ahmed
- CancerCare Manitoba, Winnipeg, MB
| | - B Brunet
- Saskatoon Cancer Centre, Saskatchewan Cancer Agency, Saskatoon, SK
| | | | - C Doll
- Tom Baker Cancer Centre, Alberta Health Services, AB
| | - M Ferguson
- Allan Blair Cancer Centre, Saskatchewan Cancer Agency, Regina, SK
| | - N Ginther
- University of Saskatchewan, Saskatoon, SK
| | - V Gordon
- CancerCare Manitoba, Winnipeg, MB
| | - T Hamilton
- University of British Columbia, Vancouver, BC
| | | | - R Helewa
- University of Manitoba, Winnipeg, MB
| | - C A Kim
- CancerCare Manitoba, Winnipeg, MB
| | - R Lee-Ying
- Tom Baker Cancer Centre, Alberta Health Services, AB
| | | | | | | | - K Mulder
- Cross Cancer Institute, Edmonton, AB
| | - J Park
- CancerCare Manitoba, Winnipeg, MB
| | | | | | - A Zaidi
- Saskatoon Cancer Centre, Saskatchewan Cancer Agency, Saskatoon, SK
| | - T Asif
- Saskatoon Cancer Centre, Saskatchewan Cancer Agency, Saskatoon, SK
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24
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Gharib G, Arif A, Zaidi A, Saleem M. Bacterial Expression and Characterization of Recombinant β-Xylosidase from the Thermophilic Xylanolytic Bacterium Bacillus sp. Crit Rev Eukaryot Gene Expr 2019; 29:305-317. [PMID: 31679292 DOI: 10.1615/critreveukaryotgeneexpr.2019029029] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
With the passage of time, energy sources are decreasing day by day. In order to meet the world's demand, much attention is being paid to the study of enzymes with xylanolytic activity as a potential means of generating energy. A thermophilic xylanolytic bacterium, Bacillus sp., was isolated from naturally decaying material by enrichment culture and serial dilution methods. The bacterium was grown in MH medium at 50°C and pH 7 for 10 h. The xylanolytic Bacillus sp. produced clear yellow haloes around the colonies in the presence of p-nitrophenyl beta-D-xylopyranoside (pNPX) as a substrate. After condition optimization, it was found that the organism produced the higher level of xylosidase activity after 14 h in the presence of arabinose as a carbon source and ammonium sulfate as a nitrogen source in the pH 7 medium of at 55°C. The maximum β-xylosidase activity after optimizing the culture condition was 5.0 U/mL. Later this thermophilic Bacillus sp. was used as a donor in cloning of the β-xylosidase gene. A genomic library of Bacillus sp. was prepared by digesting the genomic DNA of the Bacillus with the restriction endonuclease BamHI, ligating the fragments in the pUC18 cloning vector and then transforming the competent E. coli DH5α cells with the resultant chimeric plasmid. The β-xylosidase gene was identified by screening the transformants in duplicates on LB agar plates overlaid with pNPX as a substrate. Commercial production of β-xylosidase to be used as a methanol-producing enzyme can help to overcome fuel shortages.
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Affiliation(s)
- Ghazaleh Gharib
- Nanotechnology, Research and Application Center, Sabanci University, Nanotechnology Research and Applied Center, SUNUM, Istanbul, Turkey
| | - Amina Arif
- Faculty of Life Sciences, University of Central Punjab, Lahore, Pakistan
| | - Asma Zaidi
- Institute of Biochemistry and Biotechnology, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
| | - Mahjabeen Saleem
- Institute of Biochemistry and Biotechnology, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
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25
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Moccia E, Papatheodorou E, Miles CJ, Merghani A, Malhotra A, Zaidi A, Sanna GD, Homfray T, Bunce N, Anderson LJ, Tome-Esteban MT, Behr E, Sharma S, Finocchiaro G, Papadakis M. P3683Diagnosis of arrhythmogenic cardiomyopathy and overlap with cardiac adaptation to exercise: insights from a cardiac magnetic resonance study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0537] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The diagnosis of arrhythmogenic right ventricular cardiomyopathy (ARVC) is often challenging and some structural abnormalities typical of the disease may overlap with changes reflective of cardiac adaptation to exercise.
Purpose
The aim of the study was to assess the performance of the cardiac magnetic resonance (CMR) 2010 Task Force Criteria (TFC) in a cohort of patients with definite diagnosis of ARVC and define the overlap with a cohort of highly trained athletes of similar age and sex.
Methods
We compared the CMR features of 43 patients (mean age 49±17 years, 49% males, 32 (74%) genotyped) with a definite diagnosis of ARVC according to the revised TFC to 97 (mean age 45±16 years, 61% males) highly-trained athletes of similar age and sex, in whom cardiac disease was excluded after comprehensive work-up.
Results
The CMR was abnormal in 37 (86%) patients. The right ventricle (RV) was affected in isolation in 17 (39%) patients, with 18 (42%) patients exhibiting biventricular involvement and 2 (5%) patients showing isolated left ventricular (LV) involvement. The most common RV abnormalities were regional wall motion abnormalities (RWMA) (n=34; 79%), RV dilatation fulfilling a major or minor volume TFC (n=18; 42%), impaired systolic function (RV ejection fraction (EF) ≤45%: n=17; 40%) and myocardial fibrosis (n=13; 30%). The predominant LV abnormality was myocardial fibrosis (n=20; 47%), with a small proportion of patients exhibiting RWMA (n=6; 14%) and impaired systolic function (LVEF <50%: n=6; 14%). Twenty-three (53%) patients fulfilled a major (n=14; 32%) or a minor (n=9; 21%) CMR TFC. Sixteen (16%) athletes exceeded the cut-off values for RV volumes used as a major (n=10; 10%) or a minor (n=6; 6%) TFC with an inverse relationship between age and RV volumes (r=−41, p=0.001). None of the athletes fulfilled the TFC for RV ejection fraction. Applying the CMR TFC to the ARVC patient population showed a sensitivity of 33% for the major and 28% for the minor criteria. Applying the RV volume and systolic function TFC values in the entire study population showed a sensitivity of 53%, a specificity between 83% and an accuracy of 0.68.
Conclusions
The great majority (86%) of patients with ARVC demonstrates structural abnormalities suggestive of cardiomyopathy on CMR but only 53% fulfills any of the CMR TFC. Only a small proportion (16%) of older athletes demonstrate significant RV dilatation that overlaps with the volume criteria for ARVC, in juxtaposition to younger athletes who exhibit a greater degree of overlap. The emergence of ARVC as a biventricular disease provides an opportunity to re-evaluate the diagnostic criteria and include LV involvement in conjunction with RV involvement to improve diagnostic accuracy.
Acknowledgement/Funding
CRY (Cardiac Risk in the Young) charity
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Affiliation(s)
- E Moccia
- University of Sassari, Clinical and Interventional Cardiology, Sassari, Italy
| | - E Papatheodorou
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - C J Miles
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - A Merghani
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - A Malhotra
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - A Zaidi
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - G D Sanna
- University of Sassari, Clinical and Interventional Cardiology, Sassari, Italy
| | - T Homfray
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - N Bunce
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - L J Anderson
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - M T Tome-Esteban
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - E Behr
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - S Sharma
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - G Finocchiaro
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
| | - M Papadakis
- St George's University of London, Cardiology Clinical and Academic Group, London, United Kingdom
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26
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Zaidi A, Chandna N, Narasimhan G, Moser M, Haider K, Chalchal H, Shaw J, Ahmed S. Second-line chemotherapy (SLC) in patients with advanced biliary tract and gallbladder cancers (ABGC) prolongs survival: A retrospective population-based cohort study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz247.062] [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: 11/13/2022] Open
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27
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Zaidi A, Adewale M, McLean L, Ramlow P. The plasma membrane calcium pumps-The old and the new. Neurosci Lett 2019; 663:12-17. [PMID: 29452610 DOI: 10.1016/j.neulet.2017.09.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 09/29/2017] [Accepted: 09/30/2017] [Indexed: 12/27/2022]
Abstract
The plasma membrane Ca2+-ATPase (PMCA) pumps play a critical role in the maintenance of calcium (Ca2+) homeostasis, crucial for optimal neuronal function and cell survival. Loss of Ca2+ homeostasis is a key precursor in neuronal dysfunction associated with brain aging and in the pathogenesis of neurodegenerative disorders. In this article, we review evidence showing age-related changes in the PMCAs in synaptic plasma membranes (SPMs) and lipid raft microdomains isolated from rat brain. Both PMCA activity and protein levels decline progressively with increasing age. However, the loss of activity is disproportionate to the reduction of protein levels suggesting the presence of dysfunctional PMCA molecules in aged brain. PMCA activity is also diminished in post-mortem human brain samples from Alzheimer's disease and Parkinson's disease patients and in cell models of these neurodegenerative disorders. Experimental reduction of the PMCAs not only alter Ca2+ homeostasis but also have diverse effects on neurons such as reduced neuritic network, impaired release of neurotransmitter and increased susceptibility to stressful stimuli, particularly to agents that elevate intracellular Ca2+ [Ca2+]i. Loss of PMCA is likely to contribute to neuronal dysfunction observed in the aging brain and in the development of age-dependent neurodegenerative disorders. Therapeutic (pharmacological and/or non-pharmacological) approaches that can enhance PMCA activity and stabilize [Ca2+]i homeostasis may be capable of preventing, slowing, and/or reversing neuronal degeneration.
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Affiliation(s)
- Asma Zaidi
- Division of Basic Sciences, Kansas City University of Medicine and Biosciences, 1750 Independence Avenue, Kansas City, MO 64106, USA.
| | - Mercy Adewale
- Division of Basic Sciences, Kansas City University of Medicine and Biosciences, 1750 Independence Avenue, Kansas City, MO 64106, USA
| | - Lauren McLean
- Division of Basic Sciences, Kansas City University of Medicine and Biosciences, 1750 Independence Avenue, Kansas City, MO 64106, USA
| | - Paul Ramlow
- Division of Basic Sciences, Kansas City University of Medicine and Biosciences, 1750 Independence Avenue, Kansas City, MO 64106, USA
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28
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Ahmed S, Baig T, Zaidi A, Chalchal H, Haider K, Asif T, Iqbal N. Influence of not having children on mortality in patients with metastatic (mCRC) colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.119] [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: 11/14/2022] Open
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29
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Faizan M, Anwar S, Kashif R, Saleem R, Javed H, Zafar A, Hameed A, Taj M, Maysam H, Miguela C, Rathore A, Sadiq M, Gonzalez M, Zaidi A. Improvement in Infection Prevention and Control Measures at The Children Hospital, Lahore. A My Child Matters Collaborative Project. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.90400] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Overcrowding, lack of operational funds, and healthcare associated infections are major challenges at the Children Hospital Lahore, a public healthcare facility in Pakistan with 900 new pediatric cancer admissions annually. In 2014, a collaboration between My Child Matters (MCM), St. Jude Global Infectious Diseases Program (SJ-GID), and our institution was established to address these issues. Aim: To describe the effect of a collaborative improvement strategy on the infection prevention and control (IPC) standards in a pediatric oncology unit in a resource-limited setting. Methods: Our study was a prospective before-and-after study. We compare the WHO Hand Hygiene Self-Assessment Framework (HHSAF) and 4 modules of the St. Jude modified Infection Control Assessment Tool (ICAT) scores. Our strategy included: (1) creating a multidisciplinary team of pediatric hematology-oncology, infectious disease physicians, nurses, microbiologist, and a data manager, (2) engaging on monthly online IPC mentoring sessions with the SJ-GID and MCM mentors, (3) performing daily inpatient healthcare associated (HAI) surveillance rounds, and (4) providing regular hand hygiene training and compliance audits. Results: Our hand hygiene facility level per WHO scores increased from “Inadequate” during the baseline assessment to “Intermediate/Consolidation” by the end of 3-year implementation (122 vs 352 HHSAF scores). The sink: bed and hand sanitizer: bed ratios improved to 1:6 and 1:1 respectively. Six washrooms were added to our unit. ICAT general infection control module increased by 40% (45 vs 78 ICAT score) and hygiene compliance improved by 20% from baseline. Identification of HAI increased from baseline (4.07 vs 8.7 infections per 1000 patient days). A 25% of the isolates were multidrug-resistant microorganisms. Conclusion: Implementing a collaborative improvement strategy improved the IPC standards in our pediatric cancer center. The increase of HAI might be a result of a better surveillance and laboratory identification. Further targeted interventions should be develop to decrease HAI rates and infection-related morbidity and mortality in our population.
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Affiliation(s)
- M. Faizan
- The Children Hospital and Institute of Child Health, Department of Pediatric Hematology/Oncology, Lahore, Pakistan
| | - S. Anwar
- The Children Hospital and Institute of Child Health, Department of Pediatric Hematology/Oncology, Lahore, Pakistan
| | - R.U.A. Kashif
- The Children Hospital and Institute of Child Health, Department of Pediatric Hematology/Oncology, Lahore, Pakistan
| | - R. Saleem
- The Children Hospital and Institute of Child Health, Department of Pediatric Hematology/Oncology, Lahore, Pakistan
| | - H. Javed
- The Children Hospital and Institute of Child Health, Department of Pediatric Microbiology, Lahore, Pakistan
| | - A. Zafar
- The Children Hospital and Institute of Child Health, Department of Pediatric Microbiology, Lahore, Pakistan
| | - A. Hameed
- The Children Hospital and Institute of Child Health, Department of Pediatric Hematology/Oncology, Lahore, Pakistan
| | - M. Taj
- Royal Marsden Hospital, Department of Paediatric Oncology, London, United Kingdom
| | - H. Maysam
- St. Jude Children's Research Hospital, Department of Global Pediatric Medicine, Memphis, TN
| | - C. Miguela
- St. Jude Children's Research Hospital, Department of Global Pediatric Medicine, Memphis, TN
- St. Jude Children's Research Hospital, Department of Pediatric Infectious Disease, Memphis, TN
| | - A.W. Rathore
- The Children Hospital and Institute of Child Health, Department of Pediatric Medicine, Lahore, Pakistan
| | - M. Sadiq
- The Children Hospital and Institute of Child Health, Department of Pediatric Cardiology, Lahore, Pakistan
| | - M. Gonzalez
- St. Jude Children's Research Hospital, Department of Global Pediatric Medicine, Memphis, TN
| | - A. Zaidi
- St. Jude Children's Research Hospital, Department of Global Pediatric Medicine, Memphis, TN
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30
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Bellakehal H, Zaidi A, Mouattah K, Masmoudi R, Bencheriet M, Boutaiba A. Theoretical Analysis of Thermal Behavior of Overlapped GFRP Bars Embedded in Reinforced Concrete Beams. Arab J Sci Eng 2018. [DOI: 10.1007/s13369-018-3086-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Zaidi A, Alsvik IL, Øpstad CL, Martin D, Rebman E, Voss G, Sliwka HR, Partali V. Forgotten fatty acids-Surface properties supply conclusive evidence for including carotenoic acids. Chem Phys Lipids 2018; 216:48-53. [PMID: 30261174 DOI: 10.1016/j.chemphyslip.2018.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 09/02/2018] [Accepted: 09/03/2018] [Indexed: 10/28/2022]
Abstract
The term "fatty acids" is conceptually well defined with regard to fats, whose extent of saturation or unsaturation is precisely indicated in the content description of foodstuff. In contrast, the term "fatty acid" gives no hint of being associated with "soap" (Na and K salts of fatty acids). Fatty acids in edible fats or in cleaning soaps have one thing in common: they are colorless. The prevalence of colorless fats and unadulterated white soaps has ensured that fatty acids are not associated with color. However, colored conjugated polyunsaturated fatty acids do exist, occurring abundantly in nature or manufactured at large scale. We endeavor to extricate conjugated polyenoic acids from oblivion by Based on the presented results (alkalicarotenoates have similar surface properties to alkalicarboxylates, carotenoic acids react like carboxylic acids to lipids), we argue for inclusion of conjugated carotenoic acids in fatty acid inventories and organic chemistry textbooks. Carotenoic acids and -salts have outstanding qualities by combining visibility and traceability with biological activity.
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Affiliation(s)
- Asma Zaidi
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Inger Lise Alsvik
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Christer L Øpstad
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Daniel Martin
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Eduard Rebman
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Georg Voss
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Hans-Richard Sliwka
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway.
| | - Vassilia Partali
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
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32
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Abbas SA, Raza ST, Mir SS, Siddiqi Z, Zaidi A, Zaidi ZH, Mahdi F. Role of variants rs5030717 and rs5030718 of TLR4 in the risk prediction of nephropathy, hypertension and dyslipidaemia in type 2 diabetes mellitus. Br J Biomed Sci 2018; 75:163-168. [DOI: 10.1080/09674845.2018.1477033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- SA Abbas
- Department of Biochemistry, Era’s Lucknow Medical College and Hospital , Lucknow, India
| | - ST Raza
- Department of Biochemistry, Era’s Lucknow Medical College and Hospital , Lucknow, India
| | - SS Mir
- Department of Bioengineering, Integral University, Lucknow, India
| | - Z Siddiqi
- Department of Medicine, Era’s Lucknow Medical College and Hospital, Lucknow, India
| | - A Zaidi
- Department of Biochemistry, Era’s Lucknow Medical College and Hospital , Lucknow, India
| | - ZH Zaidi
- Department of Statistics, Era’s Lucknow Medical College and Hospital, Lucknow, India
| | - F Mahdi
- Department of Biochemistry, Era’s Lucknow Medical College and Hospital , Lucknow, India
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33
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Kim CA, Ahmed S, Ahmed S, Brunet B, Chalchal H, Deobald R, Doll C, Dupre MP, Gordon V, Lee-Ying RM, Lim H, Liu D, Loree JM, McGhie JP, Mulder K, Park J, Yip B, Wong RP, Zaidi A. Report from the 19th annual Western Canadian Gastrointestinal Cancer Consensus Conference; Winnipeg, Manitoba; 29-30 September 2017. ACTA ACUST UNITED AC 2018; 25:275-284. [PMID: 30111968 DOI: 10.3747/co.25.4109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The 19th annual Western Canadian Gastrointestinal Cancer Consensus Conference (wcgccc) was held in Winnipeg, Manitoba, 29-30 September 2017. The wcgccc is an interactive multidisciplinary conference attended by health care professionals from across Western Canada (British Columbia, Alberta, Saskatchewan, and Manitoba) who are involved in the care of patients with gastrointestinal cancer. Surgical, medical, and radiation oncologists; pathologists; radiologists; and allied health care professionals participated in presentation and discussion sessions for the purpose of developing the recommendations presented here. This consensus statement addresses current issues in the management of colorectal cancer.
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Affiliation(s)
- C A Kim
- Manitoba-Medical Oncology (Kim, Gordon, Wong) and Radiation Oncology (Shahida Ahmed), CancerCare Manitoba, University of Manitoba, Winnipeg; Surgery (Park, Yip) and Pathology (Dupre), University of Manitoba, Winnipeg
| | - S Ahmed
- Saskatchewan- Medical Oncology (Shahid Ahmed, Zaidi), Radiation Oncology (Brunet), and Surgery (Deobald), Saskatchewan Cancer Agency, University of Saskatchewan, Saskatoon; Medical Oncology (Chalchal), Allan Blair Cancer Centre, Regina
| | - S Ahmed
- Manitoba-Medical Oncology (Kim, Gordon, Wong) and Radiation Oncology (Shahida Ahmed), CancerCare Manitoba, University of Manitoba, Winnipeg; Surgery (Park, Yip) and Pathology (Dupre), University of Manitoba, Winnipeg
| | - B Brunet
- Saskatchewan- Medical Oncology (Shahid Ahmed, Zaidi), Radiation Oncology (Brunet), and Surgery (Deobald), Saskatchewan Cancer Agency, University of Saskatchewan, Saskatoon; Medical Oncology (Chalchal), Allan Blair Cancer Centre, Regina
| | - H Chalchal
- Saskatchewan- Medical Oncology (Shahid Ahmed, Zaidi), Radiation Oncology (Brunet), and Surgery (Deobald), Saskatchewan Cancer Agency, University of Saskatchewan, Saskatoon; Medical Oncology (Chalchal), Allan Blair Cancer Centre, Regina
| | - R Deobald
- Saskatchewan- Medical Oncology (Shahid Ahmed, Zaidi), Radiation Oncology (Brunet), and Surgery (Deobald), Saskatchewan Cancer Agency, University of Saskatchewan, Saskatoon; Medical Oncology (Chalchal), Allan Blair Cancer Centre, Regina
| | - C Doll
- Alberta-Medical Oncology (Mulder), Cross Cancer Institute, University of Alberta, Edmonton; Medical Oncology (Lee-Ying) and Radiation Oncology (Doll), Tom Baker Cancer Centre, University of Calgary, Calgary
| | - M P Dupre
- Manitoba-Medical Oncology (Kim, Gordon, Wong) and Radiation Oncology (Shahida Ahmed), CancerCare Manitoba, University of Manitoba, Winnipeg; Surgery (Park, Yip) and Pathology (Dupre), University of Manitoba, Winnipeg
| | - V Gordon
- Manitoba-Medical Oncology (Kim, Gordon, Wong) and Radiation Oncology (Shahida Ahmed), CancerCare Manitoba, University of Manitoba, Winnipeg; Surgery (Park, Yip) and Pathology (Dupre), University of Manitoba, Winnipeg
| | - R M Lee-Ying
- Alberta-Medical Oncology (Mulder), Cross Cancer Institute, University of Alberta, Edmonton; Medical Oncology (Lee-Ying) and Radiation Oncology (Doll), Tom Baker Cancer Centre, University of Calgary, Calgary
| | - H Lim
- British Columbia-Medical Oncology (Lim, Loree), BC Cancer, University of British Columbia, Vancouver; Medical Oncology (McGhie), BC Cancer, University of British Columbia, Victoria; Radiology (Liu), University of British Columbia, Vancouver
| | - D Liu
- British Columbia-Medical Oncology (Lim, Loree), BC Cancer, University of British Columbia, Vancouver; Medical Oncology (McGhie), BC Cancer, University of British Columbia, Victoria; Radiology (Liu), University of British Columbia, Vancouver
| | - J M Loree
- British Columbia-Medical Oncology (Lim, Loree), BC Cancer, University of British Columbia, Vancouver; Medical Oncology (McGhie), BC Cancer, University of British Columbia, Victoria; Radiology (Liu), University of British Columbia, Vancouver
| | - J P McGhie
- British Columbia-Medical Oncology (Lim, Loree), BC Cancer, University of British Columbia, Vancouver; Medical Oncology (McGhie), BC Cancer, University of British Columbia, Victoria; Radiology (Liu), University of British Columbia, Vancouver
| | - K Mulder
- Alberta-Medical Oncology (Mulder), Cross Cancer Institute, University of Alberta, Edmonton; Medical Oncology (Lee-Ying) and Radiation Oncology (Doll), Tom Baker Cancer Centre, University of Calgary, Calgary
| | - J Park
- Manitoba-Medical Oncology (Kim, Gordon, Wong) and Radiation Oncology (Shahida Ahmed), CancerCare Manitoba, University of Manitoba, Winnipeg; Surgery (Park, Yip) and Pathology (Dupre), University of Manitoba, Winnipeg
| | - B Yip
- Manitoba-Medical Oncology (Kim, Gordon, Wong) and Radiation Oncology (Shahida Ahmed), CancerCare Manitoba, University of Manitoba, Winnipeg; Surgery (Park, Yip) and Pathology (Dupre), University of Manitoba, Winnipeg
| | - R P Wong
- Manitoba-Medical Oncology (Kim, Gordon, Wong) and Radiation Oncology (Shahida Ahmed), CancerCare Manitoba, University of Manitoba, Winnipeg; Surgery (Park, Yip) and Pathology (Dupre), University of Manitoba, Winnipeg
| | - A Zaidi
- Saskatchewan- Medical Oncology (Shahid Ahmed, Zaidi), Radiation Oncology (Brunet), and Surgery (Deobald), Saskatchewan Cancer Agency, University of Saskatchewan, Saskatoon; Medical Oncology (Chalchal), Allan Blair Cancer Centre, Regina
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Yousafzai M, Saleem A, Mach O, Weldon W, Oberste S, Alam M, Quadri F, Zaidi A. Evaluation of poliovirus type 2 outbreak response options: a randomized controlled trial, Karachi, Pakistan. Int J Infect Dis 2018. [DOI: 10.1016/j.ijid.2018.04.4234] [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] Open
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Affiliation(s)
- Farhan A. Khan
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad-22060, KPK, Pakistan
| | - Sidra Mushtaq
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad-22060, KPK, Pakistan
| | - Sadia Naz
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad-22060, KPK, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad-22060, KPK, Pakistan
| | - Asma Zaidi
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad-22060, KPK, Pakistan
| | - Syed Majid Bukhari
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad-22060, KPK, Pakistan
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Ambar-23561, KPK, Pakistan
| | - Mohammad S. Mubarak
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad-22060, KPK, Pakistan
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Parvaiz A, Zaidi A, Chaudhry M, Khan A. A 6-months review of breast multidisciplinary team meeting records in a tertiary care cancer hospital in Pakistan. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30691-9] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Affiliation(s)
| | | | | | | | - Asma Zaidi
- COMSATS Institute of Information Technology, Pakistan
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Martínez A, Zeeshan M, Zaidi A, Sliwka HR, Razi Naqvi K, Partali V. On infinitenes – Reliable calculation of λ∞ and molecular modeling of lemniscate structured carotenoids. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2017.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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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Labombarda F, Hamilton R, Shohoudi A, Aboulhosn J, Broberg C, Cohen S, Cook S, Dore A, Fernandes S, Fournier A, Kay J, Macle L, Mondésert B, Mongeon F, Opotowsky A, Proietti A, Rivard L, Ting J, Zaidi A, Khairy P. Increasing prevalence of atrial fibrillation and permanent atrial tachyarrhythmias in the aging population with congenital heart disease: A multicenter study. Archives of Cardiovascular Diseases Supplements 2018. [DOI: 10.1016/j.acvdsp.2017.11.133] [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: 10/18/2022]
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Bousquet J, Farrell J, Crooks G, Hellings P, Bel EH, Bewick M, Chavannes NH, de Sousa JC, Cruz AA, Haahtela T, Joos G, Khaltaev N, Malva J, Muraro A, Nogues M, Palkonen S, Pedersen S, Robalo-Cordeiro C, Samolinski B, Strandberg T, Valiulis A, Yorgancioglu A, Zuberbier T, Bedbrook A, Aberer W, Adachi M, Agusti A, Akdis CA, Akdis M, Ankri J, Alonso A, Annesi-Maesano I, Ansotegui IJ, Anto JM, Arnavielhe S, Arshad H, Bai C, Baiardini I, Bachert C, Baigenzhin AK, Barbara C, Bateman ED, Beghé B, Kheder AB, Bennoor KS, Benson M, Bergmann KC, Bieber T, Bindslev-Jensen C, Bjermer L, Blain H, Blasi F, Boner AL, Bonini M, Bonini S, Bosnic-Anticevitch S, Boulet LP, Bourret R, Bousquet PJ, Braido F, Briggs AH, Brightling CE, Brozek J, Buhl R, Burney PG, Bush A, Caballero-Fonseca F, Caimmi D, Calderon MA, Calverley PM, Camargos PAM, Canonica GW, Camuzat T, Carlsen KH, Carr W, Carriazo A, Casale T, Cepeda Sarabia AM, Chatzi L, Chen YZ, Chiron R, Chkhartishvili E, Chuchalin AG, Chung KF, Ciprandi G, Cirule I, Cox L, Costa DJ, Custovic A, Dahl R, Dahlen SE, Darsow U, De Carlo G, De Blay F, Dedeu T, Deleanu D, De Manuel Keenoy E, Demoly P, Denburg JA, Devillier P, Didier A, Dinh-Xuan AT, Djukanovic R, Dokic D, Douagui H, Dray G, Dubakiene R, Durham SR, Dykewicz MS, El-Gamal Y, Emuzyte R, Fabbri LM, Fletcher M, Fiocchi A, Fink Wagner A, Fonseca J, Fokkens WJ, Forastiere F, Frith P, Gaga M, Gamkrelidze A, Garces J, Garcia-Aymerich J, Gemicioğlu B, Gereda JE, González Diaz S, Gotua M, Grisle I, Grouse L, Gutter Z, Guzmán MA, Heaney LG, Hellquist-Dahl B, Henderson D, Hendry A, Heinrich J, Heve D, Horak F, Hourihane JOB, Howarth P, Humbert M, Hyland ME, Illario M, Ivancevich JC, Jardim JR, Jares EJ, Jeandel C, Jenkins C, Johnston SL, Jonquet O, Julge K, Jung KS, Just J, Kaidashev I, Khaitov MR, Kalayci O, Kalyoncu AF, Keil T, Keith PK, Klimek L, Koffi N’Goran B, Kolek V, Koppelman GH, Kowalski ML, Kull I, Kuna P, Kvedariene V, Lambrecht B, Lau S, Larenas-Linnemann D, Laune D, Le LTT, Lieberman P, Lipworth B, Li J, Lodrup Carlsen K, Louis R, MacNee W, Magard Y, Magnan A, Mahboub B, Mair A, Majer I, Makela MJ, Manning P, Mara S, Marshall GD, Masjedi MR, Matignon P, Maurer M, Mavale-Manuel S, Melén E, Melo-Gomes E, Meltzer EO, Menzies-Gow A, Merk H, Michel JP, Miculinic N, Mihaltan F, Milenkovic B, Mohammad GMY, Molimard M, Momas I, Montilla-Santana A, Morais-Almeida M, Morgan M, Mösges R, Mullol J, Nafti S, Namazova-Baranova L, Naclerio R, Neou A, Neffen H, Nekam K, Niggemann B, Ninot G, Nyembue TD, O’Hehir RE, Ohta K, Okamoto Y, Okubo K, Ouedraogo S, Paggiaro P, Pali-Schöll I, Panzner P, Papadopoulos N, Papi A, Park HS, Passalacqua G, Pavord I, Pawankar R, Pengelly R, Pfaar O, Picard R, Pigearias B, Pin I, Plavec D, Poethig D, Pohl W, Popov TA, Portejoie F, Potter P, Postma D, Price D, Rabe KF, Raciborski F, Radier Pontal F, Repka-Ramirez S, Reitamo S, Rennard S, Rodenas F, Roberts J, Roca J, Rodriguez Mañas L, Rolland C, Roman Rodriguez M, Romano A, Rosado-Pinto J, Rosario N, Rosenwasser L, Rottem M, Ryan D, Sanchez-Borges M, Scadding GK, Schunemann HJ, Serrano E, Schmid-Grendelmeier P, Schulz H, Sheikh A, Shields M, Siafakas N, Sibille Y, Similowski T, Simons FER, Sisul JC, Skrindo I, Smit HA, Solé D, Sooronbaev T, Spranger O, Stelmach R, Sterk PJ, Sunyer J, Thijs C, To T, Todo-Bom A, Triggiani M, Valenta R, Valero AL, Valia E, Valovirta E, Van Ganse E, van Hage M, Vandenplas O, Vasankari T, Vellas B, Vestbo J, Vezzani G, Vichyanond P, Viegi G, Vogelmeier C, Vontetsianos T, Wagenmann M, Wallaert B, Walker S, Wang DY, Wahn U, Wickman M, Williams DM, Williams S, Wright J, Yawn BP, Yiallouros PK, Yusuf OM, Zaidi A, Zar HJ, Zernotti ME, Zhang L, Zhong N, Zidarn M, Mercier J. Erratum to: Scaling up strategies of the chronic respiratory disease programme of the European Innovation Partnership on Active and Healthy Ageing (Action Plan B3: Area 5). Clin Transl Allergy 2017; 7:5. [PMID: 28239450 PMCID: PMC5319069 DOI: 10.1186/s13601-016-0135-6] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 11/29/2016] [Indexed: 11/10/2022] Open
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Zaidi A, Ali M, Cunnington C, Motwani M, Allen S, Ahmed FZ. 22Cied lead extraction in the elderly has low risk. Europace 2017. [DOI: 10.1093/europace/eux283.031] [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: 11/13/2022] Open
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Zaidi A, Ali M, Cunnington C, Motwani M, Allen S, Ahmed FZ. 84Single-centre experience of cied lead extraction using cook medical evolution system. Europace 2017. [DOI: 10.1093/europace/eux283.079] [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: 11/13/2022] Open
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Papneja N, Olson C, Chalchal H, Moser M, Iqbal N, Haider K, Zaidi A, Shaw J, Brunet B, Dueck DA, Abbas T, Ahmed S. Comparisons of outcomes of patients with advanced pancreatic cancer (APC) treated with FOLFIRINOX (FX) versus gemcitabine and nab-paclitaxel (GN): A population-based cohort study. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx369.130a] [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: 11/13/2022] Open
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Zaidi A, Merghani A, Maestrini V, Rosmini S, Schofield R, Papadakis M, Manisty C, Moon J, Sharma S. P3990Exercise-induced arrhythmogenic right ventricular remodeling in master endurance athletes. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3990] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Finocchiaro G, Dhutia H, Zaidi A, Malhotra A, De Luca A, Merlo M, Cappelletto C, Fabi E, Brook J, Behr E, Tome M, Carr-White G, Papadakis M, Sinagra G, Sharma S. P1602Electrocardiographic diifferentiation between benign T wave inversion and arrhythmogenic right ventricular cardiomyopathy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1602] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zaidi A. MEASURING ACTIVE AND HEALTHY AGEING: LESSONS FROM ACTIVE AGEING INDEX OF THE EUROPEAN COUNTRIES. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A. Zaidi
- Ageing/ Gerontology, University of Southampton, Southampton, United Kingdom,
- London School of Economics and Political Science, London, United Kingdom
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Genova A, Di Furia L, Zaidi A. SUCCESS, AGING, AND QUALITY OF LIFE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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)
- A. Genova
- Economics, Society, Politics, University of Urbino Carlo Bo, Fossombrone, Italy,
- Fondazione Giacomo Brodolini, Rome, Italy,
| | | | - A. Zaidi
- University of Southampton, Southampton, United Kingdom,
- London School of Economics, London, United Kingdom
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Bobak M, Bickenbach J, Gheno I, Zaidi A, Chatterji S, Prina M, Haro J. POLICY AND KNOWLEDGE TRANSLATION IN THE ATHLOS PROJECT. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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)
- M. Bobak
- Epidemiology and Public Health, University College London, London, United Kingdom,
| | | | - I. Gheno
- Age Platform Europe, Brussels, Belgium,
| | - A. Zaidi
- University of Southampton, Southampton, United Kingdom
| | | | - M. Prina
- Kings College London, London, United Kingdom,
| | - J. Haro
- Parc Sanitari Sant Joan de Déu, Barcelona, Spain,
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Affiliation(s)
- A. Zaidi
- Ageing/ Gerontology, University of Southampton, Southampton, United Kingdom,
- London School of Economics and Political Science, London, United Kingdom,
| | - A.C. Walker
- University of Sheffield, Sheffield, United Kingdom
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Khorasaninejad M, Shi Z, Zhu AY, Chen WT, Sanjeev V, Zaidi A, Capasso F. Achromatic Metalens over 60 nm Bandwidth in the Visible and Metalens with Reverse Chromatic Dispersion. Nano Lett 2017; 17:1819-1824. [PMID: 28125234 DOI: 10.1021/acs.nanolett.6b05137] [Citation(s) in RCA: 163] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this Letter, we experimentally report an achromatic metalens (AML) operating over a continuous bandwidth in the visible. This is accomplished via dispersion engineering of dielectric phase shifters: titanium dioxide nanopillars tiled on a dielectric spacer layer above a metallic mirror. The AML works in reflection mode with a focal length independent of wavelength from λ = 490 to 550 nm. We also design a metalens with reverse chromatic dispersion, where the focal length increases as the wavelength increases, contrary to conventional diffractive lenses. The ability to engineer the chromatic dispersion of metalenses at will enables a wide variety of applications that were not previously possible. In particular, for the AML design, we envision applications such as imaging under LED illumination, fluorescence, and photoluminescence spectroscopy.
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Affiliation(s)
| | | | | | | | - V Sanjeev
- University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
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