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Bajaber MA, Hameed A, Hussain G, Noreen R, Ibrahim M, Batool S, Qayyum MA, Farooq T, Parveen B, Khalid T, Kanwal P. Chitosan nanoparticles loaded with Foeniculum vulgare extract regulate retrieval of sensory and motor functions in mice. Heliyon 2024; 10:e25414. [PMID: 38352784 PMCID: PMC10862683 DOI: 10.1016/j.heliyon.2024.e25414] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 02/16/2024] Open
Abstract
In this study, chitosan nanoparticles (CSNPs) encapsulating Foeniculum vulgare (FV) seed extract (SE) were prepared for the controlled delivery of bioactive phytoconstituents. The prepared CSNPs encapsulating FVSE as sustain-releasing nanoconjugate (CSNPs-FVSE) was used as a potent source of functional metabolites including kaempferol and quercetin for accelerated reclamation of sensory and motor functions following peripheral nerve injury (PNI). The nanoconjugate exhibited in vitro a biphasic diffusion-controlled sustained release of quercetin and kaempferol ensuring prolonged therapeutic effects. The CSNPs-FVSE was administered through gavaging to albino mice daily at a dose rate of 25 mg/kg body weight from the day of induced PNI till the end of the experiment. The conjugate-treatment induced a significant acceleration in the regain of motor functioning, evaluated from the sciatic function index (SFI) and muscle grip strength studies. Further, the hotplate test confirmed a significantly faster recuperation of sensory functions in conjugate-treated group compared to control. An array of underlying biochemical pathways regulates the regeneration under well-optimized glucose and oxidant levels. Therefore, oxidant status (TOS), blood glycemic level and total antioxidant capacity (TAC) were evaluated in the conjugate-treated group and compared with the controls. The treated subjects exhibited controlled oxidative stress and regulated blood sugars compared to the non-treated control. Thus, the nanoconjugate enriched with polyphenolics significantly accelerated the regeneration and recovery of functions after nerve lesions. The biocompatible nanocarriers encapsulating the nontoxic natural bioactive constitutents have great medicinal and economic value.
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Affiliation(s)
- Majed A. Bajaber
- Chemistry Department, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Arruje Hameed
- Department of Biochemistry, Government College University Faisalabad, Pakistan
| | - Ghulam Hussain
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Government College University Faisalabad, Pakistan
| | - Razia Noreen
- Department of Biochemistry, Government College University Faisalabad, Pakistan
| | - Muhammad Ibrahim
- Department of Applied Chemistry, Government College University Faisalabad, Pakistan
| | - Shaheera Batool
- Department of Biochemistry, CMH Institute of Medical Sciences Multan, Multan, Pakistan
| | - Muhammad Abdul Qayyum
- Department of Chemistry, Division of Science & Technology, University of Education, Lahore, Pakistan
| | - Tahir Farooq
- Department of Applied Chemistry, Government College University Faisalabad, Pakistan
| | - Bushra Parveen
- Department of Chemistry, Government College University Faisalabad, Pakistan
| | - Tanzeela Khalid
- Department of Applied Chemistry, Government College University Faisalabad, Pakistan
| | - Perveen Kanwal
- Department of Chemistry, The Women University of Multan, Multan, 66000, Pakistan
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Hameed A, Maqsood W, Hameed A, Qayyum MA, Ahmed T, Farooq T. Chitosan nanoparticles encapsulating curcumin counteract salt-mediated ionic toxicity in wheat seedlings: an ecofriendly and sustainable approach. Environ Sci Pollut Res Int 2024; 31:8917-8929. [PMID: 38182953 DOI: 10.1007/s11356-023-31768-y] [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] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 12/25/2023] [Indexed: 01/07/2024]
Abstract
Over-accumulating salts in soil are hazardous materials that interfere with the biochemical pathways in growing plants drastically affecting their physiological attributes, growth, and productivity. Soil salinization poses severe threats to highly-demanded and important crops directly challenging food security and sustainable productivity. Recently, there has been a great demand to exploit natural sources for the development of nontoxic nanoformulations of growth enhancers and stress emulators. The chitosan (CS) has growth-stimulating properties and widespread use as nanocarriers, while curcumin (CUR) has a well-established high ROS scavenging potential. Herein, we use CS and CUR for the preparation of CSNPs encapsulating CUR as an ecofriendly nanopriming agent. The hydroprimed, nanoprimed (0.02 and 0.04%), and unprimed (control) wheat seeds were germinated under salt stress (150 mM NaCl) and normal conditions. The seedlings established from the aforementioned seeds were employed for germination studies and biochemical analyses. Priming imprints mitigated the ionic toxicity by upregulating the machinery of antioxidants (CAT, POD, APX, and SOD), photosynthetic pigments (Chl a, Chl b, total Chl, and lycopene), tannins, flavonoids, and protein contents in wheat seedlings under salt stress. It controlled ROS production and avoided structural injuries, thus reducing MDA contents and regulating osmoregulation. The nanopriming-induced readjustments in biochemical attributes counteracted the ionic toxicity and positively influenced the growth parameters including final germination, vigor, and germination index. It also reduced the mean germination time, significantly validating the growth-stimulating and stress-emulating role of the prepared nanosystem. Hence, the nanopriming conferred tolerance against salt stress during germination and seedling development, ensuring sustainable growth.
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Affiliation(s)
- Arruje Hameed
- Department of Biochemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Waqas Maqsood
- Department of Applied Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Amjad Hameed
- Plant Breeding & Genetics Division, Nuclear Institute for Agriculture and Biology (NIAB), Jhang Road, Faisalabad, Pakistan
| | - Muhammad Abdul Qayyum
- Department of Chemistry, Division of Science & Technology, University of Education, Lahore, Pakistan
| | - Toheed Ahmed
- Department of Chemistry, Riphah International University, Faisalabad, 38000, Pakistan
| | - Tahir Farooq
- Department of Applied Chemistry, Government College University Faisalabad, Faisalabad, Pakistan.
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Aslam A, Berger MR, Ullah I, Hameed A, Masood F. Preparation and evaluation of cytotoxic potential of paclitaxel containing poly-3-hydroxybutyrate-co-3-hydroxyvalarate (PTX/PHBV) nanoparticles. BRAZ J BIOL 2023; 83:e275688. [PMID: 37970904 DOI: 10.1590/1519-6984.275688] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 08/18/2023] [Indexed: 11/19/2023] Open
Abstract
Paclitaxel (PTX) is a potent anticancer drug. In the present study, PTX was loaded in poly-3-hydroxybutyrate-co-3-hydroxyvalarate (PHBV) to fabricate the PTX/PHBV (drug-loaded) nanoparticles via the nanoprecipitation method. Blank PHBV nanoparticles were also prepared. The drug-encapsulation efficiency of PTX/PHBV nanoparticles was 45±0.4%. The PTX/PHBV nanoparticles exhibited a pH-sensitive release profile and followed a quasi-Fickian diffusion mechanism. Cytotoxic properties of PHBV and PTX/PHBV nanoparticles were checked against the MCF-7 and Caco-2 cell lines. The PHBV nanoparticle did not inhibit the proliferation of MCF-7 and Caco-2 cell lines, thus depicting their non-toxic and biocompatible nature. On the other hand, the PTX/PHBV nanoparticles demonstrated 1.03-fold higher cytotoxicity and 1.61-fold enhanced apoptosis after treatment with the PTX/PHBV nanoparticles versus free PTX. In summary, the PHBV nanoparticles could be a potential candidate for the delivery of PTX for cancer treatment.
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Affiliation(s)
- A Aslam
- International Islamic University, SA Centre for Interdisciplinary Research in Basic Sciences, Islamabad, Pakistan
| | - M R Berger
- German Cancer Research Center (DKFZ), Toxicology and Chemotherapy Unit, Heidelberg, Germany
| | - I Ullah
- International Islamic University, SA Centre for Interdisciplinary Research in Basic Sciences, Islamabad, Pakistan
| | - A Hameed
- International Islamic University, SA Centre for Interdisciplinary Research in Basic Sciences, Islamabad, Pakistan
| | - F Masood
- COMSATS University, Germany Department of Biosciences, Islamabad, Pakistan
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Bajaber MA, Hussain G, Farooq T, Noreen R, Ibrahim M, Umbreen H, Batool S, Rehman K, Hameed A, Farid MF, Khalid T. Nanosuspension of Foeniculum Vulgare Promotes Accelerated Sensory and Motor Function Recovery after Sciatic Nerve Injury. Metabolites 2023; 13:metabo13030391. [PMID: 36984831 PMCID: PMC10058352 DOI: 10.3390/metabo13030391] [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] [Received: 02/07/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/10/2023] Open
Abstract
The seed extract of Foeniculum vulgare (FV) was used for the preparation of a nanosuspension (NS) with an enhanced bioavailability of phytoconstituents. Subsequently, it was employed as a potent source of polyphenols, such as quercetin and kaempferol, to accelerate the regeneration and recovery of motor and sensory function in injured nerves. The NS was administered through daily gauging as NS1 (0.5 mg/mL) and NS2 (15 mg/mL), at a dose rate of 2 g/kg body weight until the end of the study. The NS-mediated retrieval of motor functions was studied by evaluating muscle grip strength and the sciatic functional index. The recovery of sensory functions was assessed by the hotplate test. Several well-integrated biochemical pathways mediate the recovery of function and the regeneration of nerves under controlled blood glucose and oxidative stress. Consequently, the NS-treated groups were screened for blood glucose, total antioxidant capacity (TAC), and total oxidant status (TOS) compared to the control. The NS administration showed a significant potential to enhance the recuperation of motor and sensory functions. Moreover, the oxidative stress was kept under check as a result of NS treatments to facilitate neuronal generation. Thus, the nanoformulation of FV with polyphenolic contents accelerated the reclamation of motor and sensory function after nerve lesion.
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Affiliation(s)
- Majed A. Bajaber
- Chemistry Department, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Ghulam Hussain
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Razia Noreen
- Department of Biochemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Ibrahim
- Department of Applied Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Huma Umbreen
- Department of Nutritional Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Shaheera Batool
- Department of Biochemistry, CMH Institute of Medical Sciences Multan, Multan 60000, Pakistan
| | - Kanwal Rehman
- Department of Pharmacy, The Women University Multan, Multan 60000, Pakistan
| | - Arruje Hameed
- Department of Biochemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
- Correspondence: or (A.H.); (T.K.)
| | - Muhammad Fayyaz Farid
- Department of Applied Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Tanzeela Khalid
- Department of Applied Chemistry, Government College University, Faisalabad 38000, Pakistan
- Correspondence: or (A.H.); (T.K.)
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Farooq T, Akram MN, Hameed A, Ahmed T, Hameed A. Nanopriming-mediated memory imprints reduce salt toxicity in wheat seedlings by modulating physiobiochemical attributes. BMC Plant Biol 2022; 22:540. [PMID: 36414951 PMCID: PMC9682780 DOI: 10.1186/s12870-022-03912-2] [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] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Around the globe, salinity is one of the serious environmental stresses which negatively affect rapid seed germination, uniform seedling establishment and plant developments restricting sustainable agricultural productivity. In recent years, the concepts of sustainable agriculture and cleaner production strategy have emphasized the introduction of greener agrochemicals using biocompatible and natural sources to maximize crop yield with minimum ecotoxicological effects. Over the last decade, the emergence of nanotechnology as a forefront of interdisciplinary science has introduced nanomaterials as fast-acting plant growth-promoting agents. RESULTS Herein, we report the preparation of nanocomposite using chitosan and green tea (CS-GTE NC) as an ecofriendly nanopriming agent to elicit salt stress tolerance through priming imprints. The CS-GTE NC-primed (0.02, 0.04 and 0.06%), hydroprimed and non-primed (control) wheat seeds were germinated under normal and salt stress (150 mM NaCl) conditions. The seedlings developed from aforesaid seeds were used for physiological, biochemical and germination studies. The priming treatments increased protein contents (10-12%), photosynthetic pigments (Chl a (4-6%), Chl b (34-36%), Total Chl (7-14%) and upregulated the machinery of antioxidants (CAT (26-42%), POD (22-43%)) in wheat seedlings under stress conditions. It also reduced MDA contents (65-75%) and regulated ROS production resulting in improved membrane stability. The priming-mediated alterations in biochemical attributes resulted in improved final germination (20-22%), vigor (4-11%) and germination index (6-13%) under both conditions. It reduced mean germination time significantly, establishing the stress-insulating role of the nanocomposite. The improvement of germination parameters validated the stimulation of priming memory in composite-treated seeds. CONCLUSION Pre-treatment of seeds with nanocomposite enables them to counter salinity at the seedling development stage by means of priming memory warranting sustainable plant growth and high crop productivity.
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Affiliation(s)
- Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | | | - Amjad Hameed
- Plant Breeding & Genetics Division, Nuclear Institute for Agriculture and Biology (NIAB), Jhang Road, Faisalabad, Pakistan
| | - Toheed Ahmed
- Department of Chemistry, Riphah International University, Faisalabad, 38000, Pakistan
| | - Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan.
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Farooq T, Nisa ZU, Hameed A, Ahmed T, Hameed A. Priming with copper-chitosan nanoparticles elicit tolerance against PEG-induced hyperosmotic stress and salinity in wheat. BMC Chem 2022; 16:23. [PMID: 35365183 PMCID: PMC8976417 DOI: 10.1186/s13065-022-00813-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 03/14/2022] [Indexed: 11/29/2022] Open
Abstract
In this study Cu-chitosan nanoparticles (Cu-CNP) have been employed as eco-friendly and safer priming agents to induce salt and PEG-induced hyperosmotic stress tolerance in wheat seedlings. Seed priming is a facile on-farm stress management technique that requires a little amount of priming agent and minimizes the eco-toxicological effects on soil fertility. The wheat seeds were primed with 0.12% and 0.16% Cu-CNP for eight hours and were allowed to germinate under normal, PEG-induced hyperosmotic stress (15% PEG-6000 – 3.0 Mpa) and salt stress (150 mM). For comparison, non-primed and hydro-primed seeds were also allowed to germinate as control under the same conditions. The biochemical analyses suggested the priming treatments enhanced the POD activity under salt stress but it was decreased under PEG-induced hyperosmotic stress. Priming with 0.12% Cu-CNP induced a significant increase in CAT while the opposite effect was observed in 0.16% treated seedling under stress and non-stress conditions. Both priming treatments did not allow the over-expression of SOD under both stress conditions. The total phenolic contents were also decreased significantly under all conditions. Except for priming with 0.16% Cu-CNP under PEG-induced hyperosmotic stress, a suppression in MDA was observed under both stress conditions. Surprisingly, the Cu-CNP priming induced a significant increase in β-carotenoids, total carotenoids, chlorophyll a, b and total chlorophyll under normal and stress conditions. In conclusion, the controlled expression of enzymatic antioxidants, low contents of non-enzymatic antioxidants and suppression of MDA mirror the stress mitigating role of Cu-CNP against PEG-induced hyperosmotic stress and salinity. The stress-insulating potential has also been reinforced by the enhanced production of plant and photosynthetic pigments. All these priming-induced biochemical changes produced positive effects on growth and germinating parameters in wheat seedlings under PEG-induced hyperosmotic stress as well as salinity.
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Affiliation(s)
- Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Zaib Un Nisa
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Amjad Hameed
- Nuclear Institute for Agriculture and Biology (NIAB), Jhang Road, Faisalabad, Pakistan
| | - Toheed Ahmed
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan.,Department of Chemistry, Riphah international university, Faisalabad, 380000, Pakistan
| | - Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan.
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Maqsood H, Ashraf T, Younus S, Rasool MW, Hameed A. Identification of hemodynamically significant coronary artery disease with stress myocardial blood flow ratio by dynamic CT perfusion studies. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.015] [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
Funding Acknowledgements
Type of funding sources: None.
Introduction
Coronary computed tomographic angiography (CTA) is an accepted noninvasive tool with high diagnostic accuracy for the evaluation of coronary artery disease (CAD). However, coronary CTA is limited in that it does not provide information on the hemodynamic relevance of coronary artery stenosis. Therefore, to determine the potential benefit of future coronary revascularization, a functional assessment is often required. A protocol combining coronary computed tomographic angiography (CTA) and CTP can provide a simultaneous assessment of both coronary artery ischemia and anatomy.
Purpose
This study sought to evaluate the diagnostic accuracy of stress myocardial blood flow ratio (SFR), a novel parameter derived from stress dynamic computed tomographic perfusion (CTP), for the detection of hemodynamically significant coronary stenosis.
Methods
A total of 98 patients (mean age 54.5 ± 10 years) with 128 vessels with either 1- or 2-vessel disease, scheduled for invasive angiography were included in this study. Stress dynamic CTP was performed followed by coronary CTA using a dual-source computed tomographic system. Fractional flow reserve was performed at subsequent invasive angiography to identify hemodynamically significant stenosis. Stress myocardial blood flow ratio (SFR) was defined as the ratio of hyperemic myocardial blood flow (MBF) in an artery with stenosis to hyperemic MBF in a non-diseased artery. The diagnostic accuracy of the SFR index was determined against the reference standard of invasive fractional flow reserve ≤0.80.
Results
58 (45.3%) vessels were deemed hemodynamically significant by fractional flow reserve (FFR) measurement. Hyperemic MBF and SFR were lower for vessels with hemodynamically significant lesions (95 ± 32.2 ml/100 ml/min vs. 140.5 ± 30.4 ml/100 ml/min; p < 0.01 for both). When compared with ≥50% stenosis by CTA, the specificity for detecting ischemia by SFR increased from 44% to 92%, while the sensitivity decreased from 93% to 58%. The combination of stenosis ≥50% by CTA and SFR resulted in an area under the curve of 0.9, which was significantly higher compared with hyperemic MBF, area under the curve = 0.79 and p < 0.01.
Conclusion
Our study concludes that the calculation of SFR by dynamic CTP provides a pioneering and accurate method to identify flow-limiting coronary stenosis. Abstract Figure.
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Affiliation(s)
- H Maqsood
- Nishtar Medical University, Multan, Pakistan
| | - T Ashraf
- Nishtar Medical University, Multan, Pakistan
| | - S Younus
- Nishtar Medical University, Multan, Pakistan
| | - M W Rasool
- Nishtar Medical University, Multan, Pakistan
| | - A Hameed
- Nishtar Medical University, Multan, Pakistan
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Maqsood H, Ashraf T, Younus S, Rasool MW, Hameed A. Pharmacological evaluation of the use of dexrazoxane in preventing anthracycline induced cardiotoxicity in breast cancer. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehab849.171] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Anthracyclines and trastuzumab are extensively used for the treatment of breast cancer but are associated with an increased risk of dilated cardiomyopathy. Dexrazoxane is an iron-chelating agent used to reduce the risk of cardiotoxicity, but it is seldom used in clinical practice.
Purpose
A meta-analysis was performed to check the efficacy of dexrazoxane in patients with breast cancer who were treated with anthracyclines with or without trastuzumab.
Methods
Online databases were searched from January 2000 up to October 31, 2019, for clinical trials on the use of dexrazoxane for the prevention of cardiomyopathy in patients with breast cancer receiving anthracyclines with or without trastuzumab. Risk ratios with 95% confidence intervals were calculated using a mixed-effects model meta-analysis.
Results
Five randomized trials and 2 retrospective trials with a total of 1,587 patients were included. Dexrazoxane reduced the risk of clinical heart failure (p < 0.001) and cardiomyopathy (p < 0.001) irrespective of previous exposure to anthracyclines. The overall survival rate, progression-free survival and the rate of partial or complete oncological response were not affected by dexrazoxane.
Conclusion
Our study concludes that dexrazoxane reduced the risk of heart failure and cardiomyopathy in the patients who were treated with anthracycline chemotherapy with or without trastuzumab and did not impact cancer outcomes significantly. However, the area of our study is limited and further studies should be done before the systematic application of this therapy in clinical practice. Abstract Figure.
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Affiliation(s)
- H Maqsood
- Nishtar Medical University, Multan, Pakistan
| | - T Ashraf
- Nishtar Medical University, Multan, Pakistan
| | - S Younus
- Nishtar Medical University, Multan, Pakistan
| | - M W Rasool
- Nishtar Medical University, Multan, Pakistan
| | - A Hameed
- Nishtar Medical University, Multan, Pakistan
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Arshad F, Umbreen H, Aslam I, Hameed A, Aftab K, Al-Qahtani WH, Aslam N, Noreen R. Therapeutic Role of Mango Peels in Management of Dyslipidemia and Oxidative Stress in Obese Females. Biomed Res Int 2021; 2021:3094571. [PMID: 34725636 PMCID: PMC8557052 DOI: 10.1155/2021/3094571] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/29/2021] [Indexed: 12/15/2022]
Abstract
Obesity is a chronic metabolic and noncommunicable disease that affects 50% of world population. Reactive oxygen species and oxidative stress are interconnected with the obesity and several metabolic disorders, gaining the attention of scientific community to combat this problem naturally. Among various fruits, mango as a yellow fruit is rich in polyphenols, carotenoids, terpenes, and flavonoids that act as antioxidants to protect against free radicals produced in the body. The present study was performed to explore in vivo antioxidant potential of mango peels against dyslipidemia and oxidative stress in overweight subjects. The female volunteers (n = 31) between 25 and 45 years of age having a body mass index (BMI) of 25.0-29.9 (overweight) were included in this study, while participants with complications as diabetes, hypertension, cardiovascular, and liver diseases were excluded. The treatment group consumed 1 g mango peel powder for 84 days. The subjects were analyzed for biochemical analysis, antioxidant status, and anthropometric measurements at baseline and end of the study period. Further, at the end of study, the safety evaluation tests were also performed. The results showed that upon consumption of mango peel powder, low-density lipoproteins (LDL), cholesterol, triglyceride, urea, and creatinine levels were decreased and high-density lipoprotein (HDL) level was increased (P ≤ 0.05), while thiobarbituric acid reactive substances (TBARS) showed increased antioxidant status (P ≤ 0.05) which suggests that mango peels have a strong management potential against oxidative stress and dyslipidemia in obese subjects.
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Affiliation(s)
- Farkhanda Arshad
- Department of Biochemistry, Government College University, Faisalabad-, Pakistan
| | - Huma Umbreen
- Department of Nutritional Sciences, Government College University, Faisalabad-, Pakistan
| | - Iqra Aslam
- Department of Biochemistry, University of Management and Technology, Sialkot Campus, Sialkot-, Pakistan
| | - Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad-, Pakistan
| | - Kiran Aftab
- Department of Chemistry, Government College University, Faisalabad-, Pakistan
| | - Wahidah H. Al-Qahtani
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Nighat Aslam
- Department of Biochemistry, Independent Medical College, Faisalabad-, Pakistan
| | - Razia Noreen
- Department of Biochemistry, Government College University, Faisalabad-, Pakistan
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Goodman S, Bagai A, Tan M, Andrade J, Spindler C, Malek-Marzban P, Har B, Yip A, Paniagua M, Elbarouni B, Bainey K, Paradis J, Maranda R, Cantor W, Doucet M, Khan R, Eisenberg M, Dery J, Schwalm J, Madan M, Lam A, Hameed A, Noronha L, Cieza T, Matteau A, Roth S, So D, Lavi S, Glanz A, Gao D, Tahiliani R, Welsh R, Kim H, Robinson S, Daneault B, Chong A, Le May M, Ahooja V, Gregoire J, Nadeau P, Laksman Z, Heilbron B, Bonakdar H, Yung D, Yan A. ANTITHROMBOTIC THERAPIES IN CANADIAN ATRIAL FIBRILLATION PATIENTS WITH CONCOMITANT CORONARY ARTERY DISEASE: INSIGHTS FROM THE CONNECT AF+PCI-I AND -II PROGRAMS. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.030] [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: 11/24/2022] Open
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11
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Alam MW, Malik A, Rehman A, Sarwar M, Muhammad S, Hameed A, Alsamadany H, Alzahrani Y, Ahmed Z. First Report of Alternaria alternata Causing Fruit Rot on Fig ( Ficus carica) in Pakistan. Plant Dis 2021; 105:PDIS01210090PDN. [PMID: 33616426 DOI: 10.1094/pdis-01-21-0090-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- M W Alam
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Pakistan
| | - A Malik
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Pakistan
| | - A Rehman
- Department of Plant Pathology, University of Agriculture, Faisalabad 38040, Pakistan
| | - M Sarwar
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Pakistan
| | - S Muhammad
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Pakistan
| | - A Hameed
- Department of Plant Pathology, University of Agriculture, Faisalabad 38040, Pakistan
| | - H Alsamadany
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Y Alzahrani
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Z Ahmed
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad 38040, Pakistan
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Amir M, Riaz M, Chang YF, Ismail A, Hameed A, Ahsin M. Antibiotic Resistance in Diarrheagenic Escherichia coli Isolated from Broiler Chickens in Pakistan. JFQHC 2021. [DOI: 10.18502/jfqhc.8.2.6472] [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: 11/24/2022] Open
Abstract
Background: Diarrheagenic Escherichia coli (DEC) strains are predominant cause of gastrointestinal tract illnesses. The main objective of the study was to determine antibiotic resistance in various types of DEC isolated from chicken broilers farmed in Pakistan.
Methods: A total of 200 feces and 200 meat samples from broiler chickens were collected from the slaughtering shops in Southern Punjab, Pakistan. The confirmed fecal (n=150) and meat (n=150) E. coli isolates were investigated against 16 antibiotics. Fourteen virulence genes specific for Enteropathogenic (EPEC), Shiga Toxin-producing (STEC), Enteroinvasive (EIEC), Enteroaggregative (EAEC), and Enterotoxigenic (ETEC) E. coli were identified using Polymerase Chain Reaction.
Results: EPEC was the most detected pathotype in both feces (76%) and meat (90%) samples, followed by STEC, EIEC, and ETEC. The highest resistance (40-90%) was observed against penicillin, oxytetracycline, and nalidixic acid in fecal isolates. More than 50% EPEC and EAEC fecal isolates, and 60% EAEC meat isolates were simultaneously resistant to 6 or more antibiotics.
Conclusion: Conclusively, the broiler meat sold in open markets of Pakistan was considerably contaminated with multi-drug resistant DEC. To mitigate the issue, the gov- ernment should regulate the use of antibiotics at poultry farms and monitor slaughtering practices in slaughterer houses.
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Hameed A, Farooq T, Hameed A, Sheikh MA. Sodium nitroprusside mediated priming memory invokes water-deficit stress acclimation in wheat plants through physio-biochemical alterations. Plant Physiol Biochem 2021; 160:329-340. [PMID: 33548800 DOI: 10.1016/j.plaphy.2021.01.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/24/2021] [Indexed: 05/02/2023]
Abstract
AIM Water-deficit stress is the most devastating environmental factor that adversely affects plant growth causing yield losses and low crop productivity. In this study, we employed sodium nitroprusside (SNP) as a seed priming agent for the acclimation of water-deficit stress in wheat plants by invoking priming memory. METHODS The SNP-primed (75, 100, and 125 μM) and non-primed controls were allowed to grow in pots under water deficit and normal conditions. The flag leaves of 98-days mature plants were used for biochemical and physiological studies by following the well-established methods. RESULTS The antioxidant and hydrolytic enzymes were upregulated while reducing sugars, total sugars, and glycine betaine increased significantly in flag leaves of wheat plants originated from SNP-treated seeds compared to control under water deficit stress. However, a significant reduction in MDA and proline contents represented a lesser ROS production which resulted in enhanced cell membrane stability. Consequently, there was a significant enhancement in yield, plant biomass and 100 grains weight of wheat plants under water deficit stress. CONCLUSION The improvement in yield parameters indicates the induction of priming memory in SNP-primed seeds which elicit water deficit tolerance till the maturity of plants thus ensures sustainable productivity of wheat.
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Affiliation(s)
- Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan.
| | - Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Amjad Hameed
- Nuclear Institute for Agriculture and Biology (NIAB), Jhang Road Faisalabad, Pakistan
| | - Munir Ahmad Sheikh
- Institute of Molecular Biology and Biotechnology (IMBB), University of Lahore, Lahore, Pakistan
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Alenazi DAK, Chandrasekaran S, Soomro MT, Aslam M, Hameed A, Ali S, Danish EY, Ismail IMI. Synthesis, characterization and photocatalytic performance of W 6+ impregnated g-C 3N 4 for the removal of chlorophenol derivatives in natural sunlight exposure. Chemosphere 2021; 265:129135. [PMID: 33302195 DOI: 10.1016/j.chemosphere.2020.129135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/15/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
The surface of the g-C3N4 was altered by impregnating W6+ ions that transformed to homogeneously coated oxide layer by a calcination process. An enhanced absorption and the suppressed de-excitation in the emission spectra, with the increasing W6+ loading, exposed the supporting role of the coated layer in extending the spectral response as well as the prolonged life span of excitons. The same was further supported by electrochemical impedance spectroscopy (EIS). The XRD and XPS analysis revealed the coated layer as highly crystalline pure phase monoclinic WO3 with the majority of impregnated tungsten ions in 6+ oxidation state respectively, whereas the FESEM and HRTEM analysis substantiated the uniformity of the coated layer with the interlayer spacing of the 0.369 nm. Additionally, the probable formation of individual WO3 nanoparticles or clusters was ruled out. The as-synthesized impregnated photocatalysts, in comparison to pure g-C3N4, were subjected to natural sunlight exposure for the photocatalytic removal of chlorophenol derivatives (2-CP, 3-CP, 4-CP, 2,3-DCP, 2,4-DCP, 2,4,6-TCP and PCP) that revealed the 5 wt% coating as the optimum level for significant removal. The progress of the photocatalytic process was monitored by periodic HPLC analysis whereas ion chromatography (IC) was used for the estimation of released ions. The mineralization capability of the as-synthesized W6+ coated catalysts was measured by the time scale TOC measurements. As the formation of intermediates was indicated in HPLC analysis, selected samples were subjected to GC-MS analysis for the identification of the nature of intermediates. The variable degree of removal of chlorophenol derivatives signified the role of the position and orientation of Cl group. The kinetics of the removal process was evaluated with the calculation of rate constants. The results extracted from the analytical tools and the associated band edge potentials were correlated to speculate the probable mechanism as well as the identification of major reactive oxygen species (ROS) involved in the removal process.
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Affiliation(s)
- Duna A K Alenazi
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, 21589, Saudi Arabia; Department of Chemistry, Faculty of Science, Tabuk University, Tabuk, 71491, Saudi Arabia
| | - Sivaraman Chandrasekaran
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - M Tahir Soomro
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - M Aslam
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - A Hameed
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia; National Centre for Physics, Quaid-e-Azam University, Islamabad, 44000, Pakistan.
| | - Shahid Ali
- Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - Ekram Y Danish
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, 21589, Saudi Arabia
| | - Iqbal M I Ismail
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah, 21589, Saudi Arabia
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15
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Hameed A, Farooq T, Hameed A, Sheikh MA. Silicon-Mediated Priming Induces Acclimation to Mild Water-Deficit Stress by Altering Physio-Biochemical Attributes in Wheat Plants. Front Plant Sci 2021; 12:625541. [PMID: 33679838 PMCID: PMC7933522 DOI: 10.3389/fpls.2021.625541] [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] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/18/2021] [Indexed: 05/14/2023]
Abstract
Water-deficit stress negatively affects seed germination, seedling development, and plant growth by disrupting cellular and metabolic functions, reducing the productivity and yield of field crops. In this study, sodium silicate (SS) has been employed as a seed priming agent for acclimation to mild water-deficit stress by invoking priming memory in wheat plants. In pot experiments, the SS-primed (20, 40, and 60 mM) and non-primed control seeds were allowed to grow under normal and mild water-deficit conditions. Subsequently, known methods were followed for physiological and biochemical studies using flag leaves of 98-day mature wheat plants. The antioxidant and hydrolytic enzymes were upregulated, while proteins, reducing sugars, total sugars, and glycine betaine increased significantly in the flag leaves of wheat plants originated from SS-treated seeds compared to the control under mild water-deficit stress. Significant decreases in the malondialdehyde (MDA) and proline contents suggested a controlled production of reactive oxygen species, which resulted in enhanced cell membrane stability. The SS priming induced a significant enhancement in yield, plant biomass, and 100-grain weight of wheat plants under water-deficit stress. The improvement in the yield parameters indicated the induction of Si-mediated stress acclimation in SS-primed seeds that elicited water-deficit tolerance until the maturity of plants, ensuring sustainable productivity of climate-smart plants.
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Affiliation(s)
- Arruje Hameed
- Department of Biochemistry, Government College University Faisalabad, Faisalabad, Pakistan
- *Correspondence: Arruje Hameed, ;
| | - Tahir Farooq
- Department of Applied Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Amjad Hameed
- Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan
| | - Munir Ahmad Sheikh
- Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore, Lahore, Pakistan
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Alhogbi BG, Aslam M, Hameed A, Qamar MT. The efficacy of Co 3O 4 loaded WO 3 sheets for the enhanced photocatalytic removal of 2,4,6-trichlorophenol in natural sunlight exposure. J Hazard Mater 2020; 397:122835. [PMID: 32446141 DOI: 10.1016/j.jhazmat.2020.122835] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/04/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
Owing to the promising photocatalytic performance, the sheet-like WO3 was modified by depositing nanostructured Co3O4 at the surface. The appearance of the varying dual absorption edges in the optical analysis exposed the composite nature of the synthesized materials. The structural analysis revealed the deposition of Co3O4 particles at the surface without altering the lattice of WO3 however, during the processing the cracking of disc was also evidenced. The FESEM and HRTEM analysis corroborated the uniform surface dispersion of Co3O4 nanoparticles. The co-existence of 2+ and 3+ oxidation states of Co in the deposited Co3O4 was examined by XPS analysis. The efficient trapping of excitons by Co3O4 surface entities was witnessed in the emission measurements whereas the same was authenticated by the photo-electrochemical chronopotentiometry. The Co3O4 loaded sheets exhibited substantially enhanced activity for the removal of 2,4,6-trichlorophenol as compared to pure WO3 in the complete spectrum and visible region of natural sunlight exposure. The progress of the degradation process was monitored by HPLC whereas the degradation products were identified by GC-MS. The measurement and identification of the ion released during the photocatalytic process facilitated the estimation of the probable route and role of reactive oxygen species involved in the removal process. Although, the careful analysis of the findings from the analytical tools revealed the major involvement of hydroxyl radicals however, the role of superoxide anions was also exposed. An alternative mechanism of the generation of the superoxide radical involving the 2+ and 3+ oxidation states of Co was also proposed. The effect of the pH and the added concentration of H2O2 on the ease of removal process was also investigated.
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Affiliation(s)
- Basma G Alhogbi
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - M Aslam
- Center of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - A Hameed
- National Centre for Physics, Quaid-e-Azam University, Islamabad 44000, Pakistan.
| | - M Tariq Qamar
- Department of Chemistry, Forman Christian College (A Chartered University), Ferozepur Road, Lahore 54600, Pakistan
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17
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Hameed A, Hussain SA, Ijaz MU, Umer M. Deletions of the Idh1, Eco1, Rom2, and Taf10 Genes Differently Control the Hyphal Growth, Drug Tolerance, and Virulence of Candida albicans. Folia Biol (Praha) 2020; 66:91-103. [PMID: 33069188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The most recent genome-editing system called CRISPR-Cas9 (clustered regularly interspaced short palindromic repeat system with associated protein 9-nuclease) was employed to delete four non-essential genes (i.e., Caeco1, Caidh1, Carom2, and Cataf10) individually to establish their gene functionality annotations in pathogen Candida albicans. The biological roles of these genes were investigated with respect to the cell wall integrity and biogenesis, calcium/calcineurin pathways, susceptibility of mutants towards temperature, drugs and salts. All the mutants showed increased vulnerability compared to the wild-type background strain towards the cell wall-perturbing agents, (antifungal) drugs and salts. All the mutants also exhibited repressed and defective hyphal growth and smaller colony size than control CA14. The cell cycle of all the mutants decreased enormously except for those with Carom2 deletion. The budding index and budding size also increased for all mutants with altered bud shape. The disposition of the mutants towards cell wall-perturbing enzymes disclosed lower survival and more rapid cell wall lysis events than in wild types. The pathogenicity and virulence of the mutants was checked by adhesion assay, and strains lacking rom2 and eco1 were found to possess the least adhesion capacity, which is synonymous to their decreased pathogenicity and virulence.
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Affiliation(s)
- A Hameed
- Colin Ratledge Center for Microbial Lipids, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo, P. R. China
- Clinical Research Center, Medical University of Bialystok, Białystok, Poland
| | - S A Hussain
- Colin Ratledge Center for Microbial Lipids, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo, P. R. China
- Department of Biology, South Texas Center of Emerging Infectious Diseases (STCEID), University of Texas, San Antonio, USA
| | - M U Ijaz
- Key Laboratory of Meat Processing & Quality Control, College of Food Sciences, Nanjing Agriculture University, Jiangsu, P. R. China
| | - M Umer
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road, Islamabad, Pakistan
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18
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Hameed A, Hameed A, Farooq T, Noreen R, Javed S, Batool S, Ahmad A, Gulzar T, Ahmad M. Evaluation of structurally different benzimidazoles as priming agents, plant defence activators and growth enhancers in wheat. BMC Chem 2019; 13:29. [PMID: 31384777 PMCID: PMC6661826 DOI: 10.1186/s13065-019-0546-2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 02/26/2019] [Indexed: 11/10/2022] Open
Abstract
Priming is a valuable, facile and well-established technique used to enhance seed quality to achieve rapid germination, establishment of stress resistance and improvement of crop yields. Different natural and synthetic priming agents have been used for better crop performance and abiotic stress management. In this study, four different benzimidazoles were selected as priming agents and their comparative effects were evaluated on different biochemical attributes including total soluble protein, total oxidant status, MDA contents, antioxidant enzymes (SOD, POD) and hydrolytic enzymes (protease, estrases) compared to control. Treatments with 2-thio-1-H-benzimidazole reduced total soluble proteins and increased total oxidant status significantly but no considerable effect was observed on other parameters. Priming with 2-(4-chlorophenyl)-1-H-benzimidazole considerably increased the total oxidant status and a little improvement was observed in total soluble proteins. Seeds primed with 1-H-benzimidazole showed a noticeable decrease in the protease activity while all other priming treatments were unable to induce any detectable change compared to control. The treatment with 2-(4-methoxyphenyl)-1-H-benzimidazole induced maximum reduction in MDA contents and POD activity. Moreover, all benzimidazole priming treatments reduced mean germination time, increased germination percentage and germination rate of wheat seeds.
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Affiliation(s)
- Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Amjad Hameed
- Nuclear Institute for Agriculture and Biology (NIAB), Jhang Road, P.O. Box 128, Faisalabad, Pakistan
| | - Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Razia Noreen
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Sadia Javed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Shaheera Batool
- Department of Biochemistry, Multan Institute of Health Sciences, Multan, Pakistan
| | - Ashfaq Ahmad
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Tahsin Gulzar
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
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Kadi MW, Hameed A, Mohamed R, Ismail IM, Alangari Y, Cheng HM. The effect of Pt nanoparticles distribution on the removal of cyanide by TiO2 coated Al-MCM-41 in blue light exposure. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Rasool SG, Gulzar S, Hameed A, Edwards GE, Khan MA, Gul B. Maintenance of photosynthesis and the antioxidant defence systems have key roles for survival of Halopeplis perfoliata (Amaranthaceae) in a saline environment. Plant Biol (Stuttg) 2019; 21:1167-1175. [PMID: 31332917 DOI: 10.1111/plb.13033] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 07/18/2019] [Indexed: 06/10/2023]
Abstract
Coastal salt marsh plants employ various combinations of morphological and physiological adaptations to survive under saline conditions. Little information is available on salinity tolerance mechanisms of Halopeplis perfoliata, a C3 stem succulent halophyte. We investigated the growth, photosynthesis and antioxidant defence mechanisms of H. perfoliata under saline conditions (0, 150, 300 and 600 mM NaCl) in an open greenhouse. Optimal shoot succulence, projected shoot area and relative growth rate were obtained in the low (150 mm NaCl) salinity treatment, while growth was inhibited at the highest salinity (600 mm NaCl). The CO2 compensation point and carbon isotope composition of biomass confirmed C3 photosynthesis. Increases in salinity did not affect the photosynthetic pigment content or maximum quantum efficiency of PSII of H. perfoliata. Assimilation of CO2 (A) also remained unaffected by salinity. A modest effect on some gas exchange and photochemistry parameters was observed at 600 mm NaCl. With increasing salinity, there was a continual increase in respiration, suggesting utilisation of energy to cope with saline conditions. Under 300 and 600 mm NaCl, there was an increase in H2 O2 and MDA with a concomitant rise in AsA, GR content and CAT activity. Hence, H. perfoliata appears to be an obligate halophyte that can grow up to seawater salinities by modulating photosynthetic gas exchange, photochemistry and the antioxidant defence systems.
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Affiliation(s)
- S G Rasool
- Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi, Pakistan
| | - S Gulzar
- Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi, Pakistan
| | - A Hameed
- Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi, Pakistan
| | - G E Edwards
- School of Biological Sciences, Washington State University, Pullman, WA, USA
| | - M A Khan
- Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi, Pakistan
| | - B Gul
- Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi, Pakistan
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Farooq T, Rehman K, Hameed A, Akash MSH. Stem Cell Therapy and Type 1 Diabetes Mellitus: Treatment Strategies and Future Perspectives. Adv Exp Med Biol 2019; 1084:95-107. [PMID: 29896720 DOI: 10.1007/5584_2018_195] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Type 1 diabetes mellitus (T1DM) is classified as an autoimmune disease which progressively results in the depletion of insulin-secreting β-cells. Consequently, the insulin secretion stops leading to hyperglycemic situations within the body. Under severe conditions, it also causes multi-organ diabetes-associated dysfunctionalities notably hypercoagulability, neuropathy, nephropathy, retinopathy, and sometimes organ failures. The prevalence of this disease has been noticed about 3% that has highlighted the serious concerns for healthcare professionals around the globe. For the treatment of this disease, the cell therapy is considered as an important therapeutic approach for the replacement of damaged β-cells. However, the development of autoantibodies unfortunately reduces their effectiveness with the passage of time and finally with the recurrence of diabetes mellitus. The development of new techniques for extraction and transplantation of islets failed to support this approach due to the issues related to major surgery and lifelong dependence on immunosuppression. For T1DM, such cells are supposed to produce, store, and supply insulin to maintain glucose homeostasis. The urgent need of much-anticipated substitute for insulin-secreting β-cells directed the researchers to focus on stem cells (SCs) to produce insulin-secreting β-cells. For being more specific and targeted therapeutic approaches, SC-based strategies opened up the new horizons to cure T1DM. This cell-based therapy aimed to produce functional insulin-secreting β-cells to cure diabetes on forever basis. The intrinsic regenerative potential along with immunomodulatory abilities of SCs highlights the therapeutic potential of SC-based strategies. In this article, we have comprehensively highlighted the role of SCs to treat diabetes mellitus.
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Affiliation(s)
- Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Kanwal Rehman
- Institute of Pharmacy, Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan.
| | - Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
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Farooq T, Hameed A, Rehman K, Ibrahim M, Ahmed M, Gulzar T, Akash MSH. Emerging Trends in Non-Interferon-Based Genotype-Specific Antiviral Agents: Pharmaceutical Perspectives. Crit Rev Eukaryot Gene Expr 2019; 27:305-319. [PMID: 29283325 DOI: 10.1615/critreveukaryotgeneexpr.2017019956] [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
Hepatitis C virus (HCV) presents a serious global health threat. Initially, the health-care community mainly focused on interferon (IFN)-based therapeutic options to eradicate HCV, but with the passage of time, these applications became unsuitable due to some serious side effects related to the use of IFN. In recent years, research conducted on different phases of HCV's life cycle has opened a new gateway for the use of a direct-acting new generation of anti-HCV agents. Their safer and ultrarapid response has made possible the introduction of triple therapy and use of IFN-free therapeutic treatment strategies. However, the high cost of these successful therapies has raised serious concerns, particularly in low-income countries, and this has forced pharmaceutical scientists to explore more cost-effective IFN-free alternatives for the treatment of HCV. In this article, we have briefly summarized the latest data regarding the research and development of non-IFN-based antiviral agents. The studies mentioned in this article highlight the significance of non-IFN-based direct-acting antiviral (DAA) agents. Economical alternative anti-HCV agents are expected to become available in the near future for better and more cost-effective treatments of HCV.
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Affiliation(s)
- Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Kanwal Rehman
- Institute of Pharmacy, Physiology, and Pharmacology, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Ibrahim
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Matloob Ahmed
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Tahsin Gulzar
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
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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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Aslam M, Qamar MT, Ali S, Rehman AU, Soomro MT, Ahmed I, Ismail IMI, Hameed A. Evaluation of SnO 2 for sunlight photocatalytic decontamination of water. J Environ Manage 2018; 217:805-814. [PMID: 29660706 DOI: 10.1016/j.jenvman.2018.04.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 04/04/2018] [Accepted: 04/08/2018] [Indexed: 06/08/2023]
Abstract
The broad bandgap tin (IV) oxide (SnO2) is the least investigated semiconductor material for photocatalytic water decontamination in sunlight exposure. A detailed study covering the synthesis, characterization and the evaluation of photocatalytic activity of SnO2, in the natural sunlight exposure, is presented. The structural characterization by XRD revealed the formation of phase pure tetragonal SnO2 with the average crystallite size of ∼41.5 nm whereas minor Sn2+ states in the material were identified by XPS analysis. As explored by diffuse reflectance (DR) and photoluminescence (PL) spectroscopy, the material exhibited a distinct absorption edge at ∼3.4 eV. The morphological and microstructure analysis of the synthesized SnO2 was carried out by FESEM and HRTEM. The electrochemical impedance spectroscopy (EIS) and chronopotentiometry (CP) predicted the better charge transport and retention ability of the material under illumination whereas the Mott-Schottky extrapolation prophesied the n-type behavior with the flat-band potential of -0.60 V. The photocatalytic activity of SnO2 was assessed in the exposure of complete spectrum natural sunlight for the removal of 2,4,6-trichlorophenol. The HPLC and TOC analysis monitored the progress of degradation and mineralization whereas the released chloride ions were evaluated by ion chromatography. The effect of the transition metal ions (Fe3+, Cu2+, Ni2+, and Zn2+) as electron capture agents and H2O2 as ROS generator was explored during the degradation process. The utility of the material for the simultaneous removal of chlorophenols in the mixture was also investigated. The SnO2 exhibited sustained activity in the repeated use. Based on experimental evidence congregated, the mechanism of the removal process and the efficacy of SnO2 for sunlight photocatalytic decontamination of water was established.
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Affiliation(s)
- M Aslam
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - M Tariq Qamar
- Department of Chemistry, Forman Christian College (A Chartered University), Ferozepur Road, Lahore, 54600, Pakistan
| | - Shahid Ali
- Center of Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Ateeq Ur Rehman
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4067, Australia
| | - M T Soomro
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Ikram Ahmed
- Department of Applied Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - I M I Ismail
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - A Hameed
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21589, Saudi Arabia; National Center of Physics, Quaid-e-Azam University, Islamabad 44000, Pakistan.
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Al-Qasmi N, Hameed A, Khan AN, Aslam M, Ismail IM, Soomro MT. Mercury meniscus on solid silver amalgam electrode as a sensitive electrochemical sensor for tetrachlorvinphos. Journal of Saudi Chemical Society 2018. [DOI: 10.1016/j.jscs.2016.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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26
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Appleby-Thomas GJ, Fitzmaurice B, Hameed A, Painter J, Gibson M, Wood DC, Hazael R, Hazell PJ. On differences in the equation-of-state for a selection of seven representative mammalian tissue analogue materials. J Mech Behav Biomed Mater 2017; 77:586-593. [PMID: 29096124 DOI: 10.1016/j.jmbbm.2017.10.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 10/03/2017] [Accepted: 10/08/2017] [Indexed: 11/25/2022]
Abstract
Tissue analogues employed for ballistic purposes are often monolithic in nature, e.g. ballistic gelatin and soap, etc. However, such constructs are not representative of real-world biological systems. Further, ethical considerations limit the ability to test with real-world tissues. This means that availability and understanding of accurate tissue simulants is of key importance. Here, the shock response of a wide range of ballistic simulants (ranging from dermal (protective/bulk) through to skeletal simulant materials) determined via plate-impact experiments are discussed, with a particular focus on the classification of the behaviour of differing simulants into groups that exhibit a similar response under high strain-rate loading. Resultant Hugoniot equation-of-state data (Us-up; P-v) provides appropriate feedstock materials data for future hydrocode simulations of ballistic impact events.
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Affiliation(s)
- G J Appleby-Thomas
- Centre for Defence Engineering, Cranfield Defence and Security, Cranfield University, Shrivenham, Swindon SN6 8LA, UK.
| | - B Fitzmaurice
- Centre for Defence Engineering, Cranfield Defence and Security, Cranfield University, Shrivenham, Swindon SN6 8LA, UK
| | - A Hameed
- Centre for Defence Engineering, Cranfield Defence and Security, Cranfield University, Shrivenham, Swindon SN6 8LA, UK
| | - J Painter
- Centre for Defence Engineering, Cranfield Defence and Security, Cranfield University, Shrivenham, Swindon SN6 8LA, UK
| | - M Gibson
- Centre for Defence Engineering, Cranfield Defence and Security, Cranfield University, Shrivenham, Swindon SN6 8LA, UK
| | - D C Wood
- Centre for Defence Engineering, Cranfield Defence and Security, Cranfield University, Shrivenham, Swindon SN6 8LA, UK
| | - R Hazael
- Centre for Defence Engineering, Cranfield Defence and Security, Cranfield University, Shrivenham, Swindon SN6 8LA, UK
| | - P J Hazell
- School of Engineering and Information Technology, The University of New South Wales, Canberra, ACT 2600, Australia
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Hameed A, Javed S, Noreen R, Huma T, Iqbal S, Umbreen H, Gulzar T, Farooq T. Facile and Green Synthesis of Saturated Cyclic Amines. Molecules 2017; 22:molecules22101691. [PMID: 29023406 PMCID: PMC6151670 DOI: 10.3390/molecules22101691] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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] [Received: 09/19/2017] [Revised: 10/04/2017] [Accepted: 10/06/2017] [Indexed: 12/21/2022] Open
Abstract
Single-nitrogen containing saturated cyclic amines are an important part of both natural and synthetic bioactive compounds. A number of methodologies have been developed for the synthesis of aziridines, azetidines, pyrrolidines, piperidines, azepanes and azocanes. This review highlights some facile and green synthetic routes for the synthesis of unsubstituted, multisubstituted and highly functionalized saturated cyclic amines including one-pot, microwave assisted, metal-free, solvent-free and in aqueous media.
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Affiliation(s)
- Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad 38900, Pakistan.
| | - Sadia Javed
- Department of Biochemistry, Government College University, Faisalabad 38900, Pakistan.
| | - Razia Noreen
- Department of Biochemistry, Government College University, Faisalabad 38900, Pakistan.
| | - Tayyaba Huma
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38900, Pakistan.
| | - Sarosh Iqbal
- Department of Applied Chemistry, Government College University, Faisalabad 38900, Pakistan.
| | - Huma Umbreen
- Department of Home Economics, Government College Women University, Faisalabad 38900, Pakistan.
| | - Tahsin Gulzar
- Department of Applied Chemistry, Government College University, Faisalabad 38900, Pakistan.
| | - Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad 38900, Pakistan.
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Farooq T, Hameed A, Rehman K, Ibrahim M, Qadir MI, Akash MSH. Antiretroviral Agents: Looking for the Best Possible Chemotherapeutic Options to Conquer HIV. Crit Rev Eukaryot Gene Expr 2017; 26:363-381. [PMID: 27910750 DOI: 10.1615/critreveukaryotgeneexpr.2016018255] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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
For the last thirty years, ongoing efforts have revolutionized the antiretroviral therapy, which changed human immunodeficiency virus (HIV) infections from terrifying lethal diseases to chronic conditions. However, many challenges, like emergence of drug resistance, limited the scope of activity of currently existing anti-HIV agents. Quite often severe side effects and lifelong dependency are the major concerns of present era. All these issues have compelled the scientists to reconsider and refine the current therapies and also contemplate the pivotal priorities for the developments of novel therapeutic paradigms. In response to this global concern, medicinal chemists and pharmaceutical scientists have put in solid efforts to search for or develop novel, more effective, safer, and affordable antiretroviral agents for the treatment of HIV infections. The exploration and utilization of natural sources has always been an attractive research area in this regard. In the search of the most suitable and potent anti-HIV agents, researchers have explored the anti-HIV activity of different classes of compounds originating from plants, marine organisms, and microorganisms. This review will highlight the recent notable developments for the discovery of antiretroviral agents. Furthermore, this review also highlights the better in-depth insights of existing HIV cures and preventive strategies.
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Affiliation(s)
- Tahir Farooq
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Arruje Hameed
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Kanwal Rehman
- Institute of Pharmacy, Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Ibrahim
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
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Javed S, Meraj M, Mahmood S, Hameed A, Naz F, Hassan S, Irfan R. Biosynthesis of lovastatin using agro-industrial wastes as carrier substrates. TROP J PHARM RES 2017. [DOI: 10.4314/tjpr.v16i2.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Shah MS, Eppinger M, Ahmed S, Shah AA, Hameed A, Hasan F. Flooding adds pathogenic Escherichia coli strains to the water sources in southern Khyber Pakhtunkhwa, Pakistan. Indian J Med Microbiol 2016; 34:483-488. [PMID: 27934827 DOI: 10.4103/0255-0857.195350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
PURPOSE Seasonal rains in Pakistan result in heavy floods across the country, whereby faecal contaminants will be added to the water bodies and cause numerous food-borne outbreaks. The present study was aimed to determine the prevalence of diarrheagenic Escherichia coli (DEC) strains in the water sources. MATERIALS AND METHODS Two hundred water samples collected during (2011-2012) were processed for the isolation of E. coli (EC) strains. EC strains were further analysed for antibiotic susceptibility patterns, and pathogroups-specific virulence factors stx1, stx2, stx2c, eae, tir, hlyA, bfpA, estA and eltA were detected using multiplex polymerase chain reaction. RESULTS Thirty-three percent of the water samples were contaminated with EC pathotypes. Fifty percent (33/66) of the DEC pathotypes were identified as enterotoxigenic EC (ETEC). Seventy-two percent (13/18) of the enteropathogenic EC (EPEC) strains were identified as typical EPEC and 28% (5/18) as atypical EPEC. Eleven percent (7/66) of the Shiga toxin EC (STEC) isolates carried a combination of stx1 and stx2 genes. Summer was found as a peak season with 47% (31/66) for EC pathogroups' activities. Eighty-nine percent of the strains showed resistance against tetracycline. CONCLUSION ETEC and EPEC are the primary causes of water contamination in southern regions of Khyber Pakhtunkhwa province, Pakistan. Firm adherence to the prescribed drugs can decrease trends in antibiotic resistance.
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Affiliation(s)
- M S Shah
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan; Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA
| | - M Eppinger
- Department of Biology, University of Texas at San Antonio, San Antonio, Texas, USA
| | - S Ahmed
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - A A Shah
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - A Hameed
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - F Hasan
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
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Hameed A, MacLeod J, Yip A, Aguiar C, Adisesh A, Brown C, Forgie R, Hassan A. ASSESSMENT OF FUNCTIONAL RECOVERY IN PATIENTS FOLLOWING CARDIAC SURGERY. Can J Cardiol 2016. [DOI: 10.1016/j.cjca.2016.07.168] [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: 11/30/2022] Open
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32
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Ali S, Basit A, Kazmi A, Badar F, Sidhu A, Hameed A. Chemotherapy alone or combined chemotherapy and involved field radiotherapy in favorable risk early-stage classical Hodgkin lymphoma-a 10 years experience. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw375.27] [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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Salah N, Hameed A, Aslam M, Babkair SS, Bahabri FS. Photocatalytic activity of V doped ZnO nanoparticles thin films for the removal of 2- chlorophenol from the aquatic environment under natural sunlight exposure. J Environ Manage 2016; 177:53-64. [PMID: 27082257 DOI: 10.1016/j.jenvman.2016.04.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 03/30/2016] [Accepted: 04/05/2016] [Indexed: 06/05/2023]
Abstract
Vanadium doped ZnO powders were used as precursors to deposit thin films of V(5+) incorporated ZnO nanoparticles on glass substrates by the pulsed laser deposition technique. The observed variations in Raman signals, visible region shift in the diffuse reflectance spectra along with a small shift in the (101) reflections of the X-ray diffraction (XRD) confirmed the insertion of V(5+) ions in ZnO lattice. No other additional reflection in the XRD results other than ZnO further endorsed the occupation of lattice positions by V entities rather than independent oxide formation. The asymmetric XPS peaks of Zn2p and V2p core levels confirmed the existence of both in the vicinity. The existence of minimal proportion of V(3+) along with V(5+) states varied the alteration of the oxidation states V in the synthetic route. The SEM images at various resolutions displayed the uniform distribution identical nanoparticles without the presence of additional phases in the deposited films. The SEM cross-section measurements revealed the uniform thickness of ∼90 nm of each film, whereas the surface studies of the films were performed by AFM. The as-synthesized films were tested for photocatalytic activity in sunlight illumination for the removal of 2-chlorophenol. The unique feature of the study was the estimation of the photocatalytic activity 20 ppm of 2-chlorophenol by exposing the low exposed area. The degradation of the substrate was measured by liquid phase UV-vis spectroscopy, whereas total organic carbon measurement revealed the mineralization of the substrate. The released Cl(-) ions were also measured by ion chromatography. The estimated flatband potentials and pHzpc values of the V doped materials, by Mott-Schottky analysis and zeta potential measurements respectively, were correlated with the photocatalytic activity. The kinetics of the photocatalytic degradation/mineralization process was estimated and results were correlated with the plausible mechanism.
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Affiliation(s)
- Numan Salah
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - A Hameed
- Center of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia; National Centre for Physics, Quaid-e-Azam University, Islamabad 44000, Pakistan
| | - M Aslam
- Center of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Saeed S Babkair
- Department of Physics, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - F S Bahabri
- Sciences Faculty for Girls, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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Saleha S, Ajmal M, Zafar S, Hameed A. Gene mapping in an anophthalmic pedigree of a consanguineous Pakistani family opened new horizons for research. Balkan J Med Genet 2016; 19:77-84. [PMID: 27785411 PMCID: PMC5026283 DOI: 10.1515/bjmg-2016-0010] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Clinical anophthalmia is a rare inherited disease of the eye and phenotype refers to the absence of ocular tissue in the orbit of eye. Patients may have unilateral or bilateral anophthalmia, and generally have short palpebral fissures and small orbits. Anophthalmia may be isolated or associated with a broader syndrome and may have genetic or environmental causes. However, genetic cause has been defined in only a small proportion of cases, therefore, a consanguineous Pakistani family of the Pashtoon ethnic group, with isolated clinical anophthalmia was investigated using linkage mapping. A family pedigree was created to trace the possible mode of inheritance of the disease. Blood samples were collected from affected as well as normal members of this family, and screened for disease-associated mutations. This family was analyzed for linkage to all the known loci of clinical anophthalmia, using microsatellite short tandem repeat (STR) markers. Direct sequencing was performed to find out disease-associated mutations in the candidate gene. This family with isolated clinical anophthalmia, was mapped to the SOX2 gene that is located at chromosome 3q26.3-q27. However, on exonic and regulatory regions mutation screening of the SOX2 gene, the disease-associated mutation was not identified. It showed that another gene responsible for development of the eye might be present at chromosome 3q26.3-q27 and needs to be identified and screened for the disease-associated mutation in this family.
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Affiliation(s)
- S Saleha
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Khyber Paktunkhwa, Pakistan
| | - M Ajmal
- Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, Pakistan
| | - S Zafar
- Pakistan Institute of Medical Sciences (PIMS) Islamabad, Pakistan
| | - A Hameed
- Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, Pakistan
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Aslam M, Qamar MT, Soomro MT, Ismail IMI, Rehan ZA, Ashraf MW, Hameed A. The effect of cerium alteration on the photocatalytic performance of WO3 in sunlight exposure for water decontamination. RSC Adv 2016. [DOI: 10.1039/c5ra22002e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In an effort to enhance the photocatalytic activity of cubic WO3 in sunlight exposure, its surface was modified by impregnating the Ce3+ ions ranging from 1% to 25% with a step of 5% with respect to the weight of WO3.
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Affiliation(s)
- M. Aslam
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
| | - M. Tariq Qamar
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
- Chemistry Department
| | - M. Tahir Soomro
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
| | - Iqbal M. I. Ismail
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
- Chemistry Department
| | - Zulfiqar Ahmad Rehan
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
| | - M. Waqar Ashraf
- Department of Mathematics & Natural Sciences
- Prince Mohammad Bin Fahd University
- Al Khobar 31952
- Saudi Arabia
| | - A. Hameed
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
- National Centre for Physics
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Abstract
The Amberboa is a medicinally important genus present in the family Asteraceae; members of this genus are mainly distributed in Pakistan and India. It has been used in different systems of traditional medicines for different diseases. Amberinone (1), a new sesquiterpene lactone, has been isolated from the ethyl acetate (EtOAc) soluble fraction of Amberboa ramosa together with chrysin (2), quercitine (3), eriodictyol (4) and keamferol (5). This is the first report of these compounds from this species. The structures of the isolated compounds have been elucidated by 1D and 2D (1)H (13)C NMR spectroscopy.
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Affiliation(s)
- Muhammad Ibrahim
- a Department of Applied Chemistry & Biochemistry , Government College University , Faisalabad 38000 , Pakistan.,b HEJ Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi , Karachi 75270 , Pakistan
| | - Iqbal Hussain
- d Department of Botany , Government College University , Faisalabad 38000 , Pakistan
| | - Nusrat Hussain
- b HEJ Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi , Karachi 75270 , Pakistan
| | - Arruje Hameed
- a Department of Applied Chemistry & Biochemistry , Government College University , Faisalabad 38000 , Pakistan
| | - Tahir Farooq
- a Department of Applied Chemistry & Biochemistry , Government College University , Faisalabad 38000 , Pakistan
| | - Amjad Hussain
- b HEJ Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi , Karachi 75270 , Pakistan
| | - Muhammad Sajid Hamid Akash
- c College of Pharmaceutical Sciences, Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, Zhejiang University , Hangzhou , China
| | - Shabbir Hussain
- b HEJ Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi , Karachi 75270 , Pakistan
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Qamar MT, Aslam M, Ismail IMI, Salah N, Hameed A. Synthesis, Characterization, and Sunlight Mediated Photocatalytic Activity of CuO Coated ZnO for the Removal of Nitrophenols. ACS Appl Mater Interfaces 2015; 7:8757-8769. [PMID: 25849739 DOI: 10.1021/acsami.5b01273] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
CuO@ZnO core-shell catalysts, coated by varying the CuO layer density ranging from 0.5% to 10%, were synthesized with the aim to enhance the photocatalytic activity of ZnO in sunlight and control its photocorrosion. Initially, the Cu(2+) ions were impregnated on presynthesized ZnO by wet impregnation and finally converted to CuO layers by calcination. The optical and structural characterization of the synthesized powders was performed by DRS, PL, Raman spectroscopy, and XRD analysis, respectively. The homogeneity of the coated layers was explored by FESEM. The photocatalytic activity of CuO coated ZnO was investigated for the degradation of mononitrophenols (2-, 3-, and 4-nitrophenol) and dinitrophenols (2,4-, 2,5-, and 2,6-dinitrophenol) in the exposure of the complete spectrum and visible region (420-800 nm) of sunlight. The effect of the increasing density coated layers of CuO on photocatalytic activity was evaluated for the degradation of 4-NP. Compared to pristine ZnO, a substantial increase in the degradation/mineralization ability was observable for the catalysts coated with 0.5% and 1% CuO, whereas a detrimental effect was noticed for higher coating density. Prior to photocatalytic studies, as evaluated by cyclic voltammetry (CV), compared to pure ZnO, a significant suppression of photocorrosion was noticed, under illumination, for catalysts coated with lower CuO coating. The progress of the photocatalytic degradation process was monitored by HPLC while the mineralization ability of the synthesized catalysts was estimated by TOC. The estimation of the released ions and their further interaction with the excited states and the reactive oxygen was monitored by ion chromatography (IC).
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Affiliation(s)
| | | | | | | | - A Hameed
- ∥National Centre for Physics, Quaid-e-Azam University, Islamabad 44000, Pakistan
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Aslam M, Ismail IMI, Salah N, Chandrasekaran S, Qamar MT, Hameed A. Evaluation of sunlight induced structural changes and their effect on the photocatalytic activity of V2O5 for the degradation of phenols. J Hazard Mater 2015; 286:127-135. [PMID: 25569447 DOI: 10.1016/j.jhazmat.2014.12.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 12/02/2014] [Accepted: 12/08/2014] [Indexed: 05/28/2023]
Abstract
Despite knowing the fact that vanadium pentoxide is slightly soluble in aqueous medium, its photocatalytic activity was evaluated for the degradation of phenol and its derivatives (2-hydroxyphenol, 2-chlorophenol, 2-aminophenol and 2-nitrophenol) in natural sunlight exposure. The prime objective of the study was to differentiate between the homogeneous and heterogeneous photocatalysis incurred by dissolved and undissolved V2O5 in natural sunlight exposure. V2O5 was synthesized by chemical precipitation procedure using Triton X-100 as morphology mediator and characterized by DRS, PLS, Raman, FESEM and XRD. A lower solubility of ∼ 5% per 100ml of water at 23 °C was observed after calcination at 600 °C. The study revealed no contribution of the dissolved V2O5 in the photocatalytic process. In sunlight exposure, V2O5 powder exhibited substantial activity for the degradation, however, a low mineralization of phenolic substrates was observed. The initial low activity of V2O5 followed by a sharp increase both in degradation and mineralization in complete spectrum sunlight exposure, was further investigated that revealed the decrease in the bandgap and the reduction in the particle size with the interaction of UV photons (<420 nm) as this effect was not observable in the exposure of visible region of sunlight. The role of the chemically different substituents attached to an aromatic ring at 2-positions and the secondary interaction of released ions during the degradation process with the reactive oxygen species (ROS) was also explored.
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Affiliation(s)
- M Aslam
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Iqbal M I Ismail
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Numan Salah
- Centre of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - S Chandrasekaran
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - M Tariq Qamar
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - A Hameed
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia; National Centre for Physics, Quaid-e-Azam University, Islamabad 44000, Pakistan.
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Hameed A, Ajmal M, Nasir M, Ismail M. Genetic association analysis of serotonin transporter polymorphism (5-HTTLPR) with type 2 diabetes patients of Pakistani population. Diabetes Res Clin Pract 2015; 108:67-71. [PMID: 25680681 DOI: 10.1016/j.diabres.2015.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/03/2014] [Accepted: 01/14/2015] [Indexed: 12/01/2022]
Abstract
AIMS It is well established that the serotonergic system contributes to the regulation of glucose homeostasis and feeding and therefore it has been presumed to contribute to the biological susceptibility to type 2 diabetes mellitus (T2DM) and body-mass index (BMI). 5-HTTLPR is a serotonin transporter (5-HTT) gene-linked polymorphic region that regulates the transcriptional activity of 5-HTT. Our aim was to investigate the possible association of 5-HTTLPR polymorphism (L and S alleles) in the promoter region of the serotonin transporter gene with T2DM and/or higher BMI in Pakistani population. METHODS In this study, 574 subjects diagnosed with T2DM and 402 unrelated normal controls from the general Pakistani population were genotyped for 5-HTTLPR polymorphism by PCR amplification and agarose gel electrophoresis. The genotyping data (S/S, S/L and L/L) were recorded and analysed statistically using various software and online available tools. RESULTS In the total sample, patients with type 2 diabetes and controls without diabetes, genotypes were distributed according to Hardy-Weinberg equilibrium, and S allele frequency was 61.52% (0.61). There was no statistical association between 5-HTTLPR polymorphism and the development of T2DM in this Pakistani population (p=0.12). CONCLUSIONS No significant statistical association of 5-HTTLPR polymorphism with type 2 diabetes and obesity in Pakistani population shows that 5-HTTLPR polymorphism is not a major factor in determining type 2 diabetes and obesity in Pakistan.
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Affiliation(s)
- A Hameed
- Institute of Biomedical and Genetic Engineering, 24-Mauve Area, G-9/1, Islamabad, Pakistan.
| | - M Ajmal
- Institute of Biomedical and Genetic Engineering, 24-Mauve Area, G-9/1, Islamabad, Pakistan
| | - M Nasir
- Institute of Biomedical and Genetic Engineering, 24-Mauve Area, G-9/1, Islamabad, Pakistan
| | - M Ismail
- Institute of Biomedical and Genetic Engineering, 24-Mauve Area, G-9/1, Islamabad, Pakistan
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Akhtar S, Randhawa M, Riaz M, Hameed A, Ismail T, Ismail A, Ali Z. Food safety conundrum: a Pakistan's scenario. Quality Assurance and Safety of Crops & Foods 2015. [DOI: 10.3920/qas2014.0435] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S. Akhtar
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - M.A. Randhawa
- National Institute of Food Science and Technology, University of Agriculture Faisalabad, 38040 Faisalabad, Pakistan
| | - M. Riaz
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - A. Hameed
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - T. Ismail
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - A. Ismail
- Department of Food Science and Technology, Bahauddin Zakariya University, 60000 Multan, Pakistan
| | - Z. Ali
- Department of Agriculture and Food Technology, Karakoram International University, 15100 Gilgit-Baltistan, Pakistan
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Aslam M, Soomro MT, Ismail IMI, Qari HA, Gondal MA, Hameed A. The facile synthesis, characterization and evaluation of photocatalytic activity of bimetallic FeBiO3 in natural sunlight exposure. RSC Adv 2015. [DOI: 10.1039/c5ra18808c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In an effort to develop sunlight active photocatalysts for environmental remediation, a phase pure bimetallic oxide, FeBiO3, was synthesized by a facile route.
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Affiliation(s)
- M. Aslam
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
| | - M. Tahir Soomro
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
| | - Iqbal M. I. Ismail
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
- Chemistry Department
| | - Huda A. Qari
- Department of Biological Sciences
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - M. A. Gondal
- Department of Physics
- King Fahd University of Petroleum and Minerals
- Dhahran 31261
- Saudi Arabia
| | - A. Hameed
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589
- Kingdom of Saudi Arabia
- National Centre for Physics
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Rashid SG, Gondal MA, Hameed A, Aslam M, Dastageer MA, Yamani ZH, Anjum DH. Synthesis, characterization and visible light photocatalytic activity of Cr3+, Ce3+and N co-doped TiO2for the degradation of humic acid. RSC Adv 2015. [DOI: 10.1039/c5ra00714c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis, characterization and photocatalytic activity of Cr3+and Ce3+co-doped TiON (N-doped TiO2) for the degradation of humic acid with exposure to visible light is reported.
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Affiliation(s)
- S. G. Rashid
- Laser Research Group
- Physics Department and Center of Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum & Minerals
- Dhahran 31261
- Saudi Arabia
| | - M. A. Gondal
- Laser Research Group
- Physics Department and Center of Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum & Minerals
- Dhahran 31261
- Saudi Arabia
| | - A. Hameed
- Center of Excellence in Environmental Studies
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
- National Centre for Physics
| | - M. Aslam
- Center of Excellence in Environmental Studies
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - M. A. Dastageer
- Laser Research Group
- Physics Department and Center of Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum & Minerals
- Dhahran 31261
- Saudi Arabia
| | - Z. H. Yamani
- Laser Research Group
- Physics Department and Center of Excellence in Nanotechnology (CENT)
- King Fahd University of Petroleum & Minerals
- Dhahran 31261
- Saudi Arabia
| | - D. H. Anjum
- Applied Surface Science Nanofabrication
- Imaging & Characterization Core Lab
- King Abdullah University of Science & Technology (KAUST)
- Thuwal 23599-6900
- Saudi Arabia
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Aslam M, Ismail IMI, Almeelbi T, Salah N, Chandrasekaran S, Hameed A. Enhanced photocatalytic activity of V₂O₅-ZnO composites for the mineralization of nitrophenols. Chemosphere 2014; 117:115-123. [PMID: 24997282 DOI: 10.1016/j.chemosphere.2014.05.076] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 05/23/2014] [Accepted: 05/26/2014] [Indexed: 06/03/2023]
Abstract
In an effort to enhance the photocatalytic activity of ZnO in natural sunlight, V2O5-ZnO nanocomposites were synthesized by co-precipitation technique. The characterization of the synthesized powders by FESEM, XRD and UV-visible diffuse reflectance spectroscopy (DRS) revealed that the both V2O5 and ZnO retain their individual identity in the composites but the increasing concentration of V2O5 affect the particle size of ZnO. As estimated by photoluminescence spectroscopy, in comparison to pure ZnO, the presence of V2O5 significantly suppressed the charge carrier's recombination process. The photocatalytic activity of the synthesized powders was evaluated for the degradation/mineralization of three potential nitrophenol pollutants (2-nitrophenol, 4-nitrophenol, and 2,4-dinitrophenol). The synthesized composites showed significantly higher activity for both degradation and mineralization of nitrophenols compared to pure ZnO. The progress of the degradation process was evaluated by HPLC while mineralization was monitored by TOC analysis. The degradation/mineralization route was estimated by identifying the intermediates using GC-MS. The correlation of the experimental data revealed that the position of NO2 group in 2- and 4-nitrophenol significantly affect the rate of degradation. The identification of hydroxyl group containing intermediates in the degradation of 4-NP confirmed the formation and vital role of hydroxyl radicals in degradation process. The rapid mineralization of nitrophenol substrates pointed out superoxide anions as major contributors in degradation and mineralization process. The assessment of the release of relevant ions (NO2(-), NO3(-), ONOO(-) and NH4(+)) during the degradation process assisted in identifying the plausible interaction sites.
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Affiliation(s)
- M Aslam
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Iqbal M I Ismail
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - T Almeelbi
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia; Department of Environmental Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Numan Salah
- Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - S Chandrasekaran
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - A Hameed
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia; National Centre for Physics, Quaid-e-Azam University, Islamabad 44000, Pakistan.
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Hameed A, Mir A, Nasir M, Ajmal M. Bioinformatics evaluation of NPHS2 deletion mutation associated with congenital nephrotic syndrome in a consanguineous Pakistani family. Clin Genet 2014; 87:599-601. [PMID: 25143137 DOI: 10.1111/cge.12486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 08/18/2014] [Accepted: 08/18/2014] [Indexed: 11/30/2022]
Affiliation(s)
- A Hameed
- Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, Pakistan
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Vincent J, Jamil T, Rafiq M, Anwar Z, Ayaz M, Hameed A, Nasr T, Naeem F, Khattak N, Carter M, Ahmed I, John P, Wiame E, Andrade D, Schaftingen E, Mir A, Ayub M. Phosphoserine phosphatase (PSPH) gene mutation in an intellectual disability family from Pakistan. Clin Genet 2014; 87:296-8. [DOI: 10.1111/cge.12445] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/08/2014] [Accepted: 06/16/2014] [Indexed: 11/29/2022]
Affiliation(s)
- J.B. Vincent
- Molecular Neuropsychiatry and Development (MiND) Laboratory, The Campbell Family Brain Research Institute; The Centre for Addiction and Mental Health (CAMH); Toronto ON Canada
- Department of Psychiatry; University of Toronto; Toronto ON Canada
- Institute of Medical Science; University of Toronto; Toronto ON Canada
| | - T. Jamil
- Human Molecular Genetics Laboratory, Department of Bioinformatics and Biotechnology, FBAS; International Islamic University; Islamabad Pakistan
| | - M.A. Rafiq
- Molecular Neuropsychiatry and Development (MiND) Laboratory, The Campbell Family Brain Research Institute; The Centre for Addiction and Mental Health (CAMH); Toronto ON Canada
| | - Z. Anwar
- Human Molecular Genetics Laboratory, Department of Bioinformatics and Biotechnology, FBAS; International Islamic University; Islamabad Pakistan
| | - M. Ayaz
- Lahore Institute of Research and Development; Lahore Pakistan
| | - A. Hameed
- Institute of Biomedical and Genetic Engineering; Islamabad Pakistan
| | - T. Nasr
- Mayo Hospital, Lahore and Chaudry Hospital; Gujranwala Pakistan
| | - F. Naeem
- Lahore Institute of Research and Development; Lahore Pakistan
- Department of Psychiatry; Queen's University; Kingston ON Canada
| | - N.A. Khattak
- Department of Biochemistry; PMAS-Arid Agriculture University; Rawalpindi Pakistan
| | - M. Carter
- Department of Pediatrics, Division of Clinical and Metabolic Genetics; The Hospital for Sick Children; Toronto ON Canada
| | - I. Ahmed
- Molecular Neuropsychiatry and Development (MiND) Laboratory, The Campbell Family Brain Research Institute; The Centre for Addiction and Mental Health (CAMH); Toronto ON Canada
- Atta-ur-Rehman School of Applied Biosciences (ASAB); National University of Sciences and Technology (NUST); Islamabad Pakistan
| | - P. John
- Krembil Neuroscience Centre; Toronto Western Research Institute; Toronto Canada
| | - E. Wiame
- Laboratory of Physiological Chemistry, de Duve Institute; Université Catholique de Louvain; B-1200 Brussels Belgium
| | - D.M. Andrade
- Krembil Neuroscience Centre; Toronto Western Research Institute; Toronto Canada
- Division of Neurology, Department of Medicine; University or Toronto; Toronto ON Canada
| | - E.V. Schaftingen
- Laboratory of Physiological Chemistry, de Duve Institute; Université Catholique de Louvain; B-1200 Brussels Belgium
| | - A. Mir
- Human Molecular Genetics Laboratory, Department of Bioinformatics and Biotechnology, FBAS; International Islamic University; Islamabad Pakistan
| | - M. Ayub
- Lahore Institute of Research and Development; Lahore Pakistan
- Department of Psychiatry; Queen's University; Kingston ON Canada
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Aslam M, Ismail IMI, Chandrasekaran S, Hameed A. Morphology controlled bulk synthesis of disc-shaped WO3 powder and evaluation of its photocatalytic activity for the degradation of phenols. J Hazard Mater 2014; 276:120-128. [PMID: 24869630 DOI: 10.1016/j.jhazmat.2014.05.022] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 05/08/2014] [Accepted: 05/10/2014] [Indexed: 06/03/2023]
Abstract
The surfactant assisted synthesis of disc-shaped WO3 powder and its photocatalytic performance in sunlight exposure is reported. UV-vis DRS, XRD and FESEM characterized the synthesized WO3. The synthesized powder exhibited a bandgap of ∼2.55eV with cubic lattice and high crystallinity. The photocatalytic activity of the synthesized WO3 was examined for the degradation of phenol, resorcinol, 2-chlorophenol and 2-nitrophenol in complete spectrum and visible segment of sunlight. The highly efficient degradation/mineralization of 2-chloro and 2-nitrophenol compared to that of phenol and resorcinol, under identical experimental conditions, suggested the regulatory role of substituents attached to the aromatic ring in degradation/mineralization process. The time-scale HPLC degradation profiles, identification of intermediates by GC-MS and removal of organic carbon during the course of reaction were utilized to approximate the possible route of degradation/mineralization of phenolic substrates. The measurement of the anions released during the photocatalytic process was used to identify the nature of the major oxidants (O2(•-), OH(•)) and the possible interaction sites. A significant decrease in the photocatalytic activity of synthesized WO3, ∼50%, was observed in visible portion of sunlight however, a sustained activity was observed in the repeated exposures.
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Affiliation(s)
- M Aslam
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Iqbal M I Ismail
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia
| | - S Chandrasekaran
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - A Hameed
- Centre of Excellence in Environmental Studies (CEES), King Abdulaziz University, Jeddah 21589, Saudi Arabia; National Centre for Physics, Quaid-e-Azam University, Islamabad 44000, Pakistan.
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Saleem S, Abbasi ZA, Hameed A, Qureshi NR, Khan MA, Azhar A. Novel p53 codon 240 Ser > Thr coding region mutation in the patients of oral squamous cell carcinoma (OSCC). Tumour Biol 2014; 35:7945-50. [PMID: 24833091 DOI: 10.1007/s13277-014-2062-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/06/2014] [Indexed: 01/23/2023] Open
Abstract
Chewing habits of tobacco, betel quid (paan), and betel nut (chhaliya) are common traditions in Pakistan. Different other preparations and combination of flavors with tobacco, paan, and chhaliya ingredients are commonly available in the market and have received considerable attention as sources of carcinogens that promote OSCC. Mutagens can damage DNA and generate promutagenic lesions. The germ line mutation/polymorphism of p53 gene has been reported to be involved in multiple steps of carcinogenesis. This study aims to find out the loss of TP53 functions due to mutation/polymorphism caused by genomic alteration and interaction with tobacco-related ingredients.Tissue and blood specimens from 260 OSCC patients were collected and compared with blood samples of 260 age- and sex-matched controls. Mutations in exons 2-11 of p53 gene were examined by PCR-SSCP and directly sequenced.A novel mutation was found in exon 7 of p53 gene. This mutation was observed in the tumors of the OSCC patients. The blood samples of the patients and the controls did not show the nucleotide change in this region. The "AGT" to "ACT" missense mutation was identified at position 719 at TP53. This results in the substitution of amino acid serine with threonine at codon 240 of p53 protein.This novel missence mutation in the DNA-binding domain indicated that the DNA structure may be damaged by the use of exogenous DNA-damaging agents, including tobacco-related carcinogens present in gutka, niswar, and manpuri, which may result in the loss of p53 protein function.
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Affiliation(s)
- S Saleem
- The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), University of Karachi, Karachi, Pakistan,
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Ali Z, Aslam M, Ismail IMI, Hameed A, Hussain ST, Chaudhry MN, Gondal MA. Synthesis, characterization and photocatalytic activity of Al₂O₃-TiO₂ based composites. J Environ Sci Health A Tox Hazard Subst Environ Eng 2014; 49:125-134. [PMID: 24117092 DOI: 10.1080/10934529.2013.824789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The synthesis, characterization and photocatalytic performance of non-traditional Al₂O₃-TiO₂-based photocatalysts is reported. Al₂O₃-TiO₂ support was loaded with various fractions of CuO and ZrO₂. A sound agreement was observed between the bandgaps of synthesized powders measured by UV-Visible diffuse reflectance spectroscopy (DRS) in the solid phase and UV-Visible spectroscopy in the aqueous medium. X-ray diffraction (XRD) analysis revealed the composite nature of the catalysts with the retention of individual identity of each component. The average crystallite size of the individual component was found to be in the range of 20 to 40 nm. Scanning electron microscopy (SEM) analysis authenticated the presence of CuO and ZrO₂ at the surface of Al₂O₃-TiO₂ support, while Rutherford Back Scattering Spectroscopy (RBS) confirmed the quantity of the modifiers as per theoretical calculations. The composites showed an enhanced photocatalytic activity in sunlight compared to Al₂O₃-TiO₂ for the degradation of dyes. Efforts were made to elucidate the enhanced sunlight response of the synthesized composite catalysts compared to Al₂O₃-TiO₂. As monitored by ion chromatography (IC), the synthesized photocatalysts completely mineralized the dyes leaving behind inorganic ions in solution. The kinetics of photocatalytic degradation of dyes was evaluated for optimum correlation with the existing models. The stability of the photocatalysts against the photo-corrosion was monitored by analyzing the samples for respective metals in solution after sunlight exposure. Supplemental materials are available for this article. Go to the publisher's online edition of the Journal of Environmental Science and Health, Part A, to view the supplemental file.
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Affiliation(s)
- Zulfiqar Ali
- a College of Earth & Environmental Sciences , University of the Punjab , Lahore, Pakistan
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Ismail IMI, Aslam M, Almeelbi T, Chandrasekaran S, Hameed A. Ce3+ impregnated ZnO: a highly efficient photocatalyst for sunlight mediated mineralization. RSC Adv 2014. [DOI: 10.1039/c4ra00097h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The surface of pre-synthesized hexagonal ZnO was tailored by Ce3+ states.
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Affiliation(s)
- Iqbal M. I. Ismail
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589, Saudi Arabia
- Chemistry Department
- Faculty of Science
| | - M. Aslam
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589, Saudi Arabia
| | - T. Almeelbi
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589, Saudi Arabia
- Department of Environmental Sciences
- King Abdulaziz University
| | - S. Chandrasekaran
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589, Saudi Arabia
| | - A. Hameed
- Centre of Excellence in Environmental Studies (CEES)
- King Abdulaziz University
- Jeddah 21589, Saudi Arabia
- National Centre for Physics
- Quaid-e-Azam University
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Jamal A, Qureshi M, Ali N, Ali M, Hameed A. Enhanced Production of Rhamnolipids by Pseudomonas aeruginosa JQ927360 Using Response Surface Methodology. ACTA ACUST UNITED AC 2014. [DOI: 10.14233/ajchem.2014.15851] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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