Full Text Journal Articles by
Author Qasim Khan

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Prevalence of QTc interval prolongation and its associated risk factors among psychiatric patients: a prospective observational study.

Zahid Ali, Mohammad Ismail, Zahid Nazar, Fahadullah Khan, Qasim Khan, Sidra Noor,

BACKGROUND:QT interval prolongation is a growing concern worldwide, posing psychiatric patients to life-threatening fatal arrhythmias i.e., torsade de pointes. This study aimed to identify the prevalence of QT interval prolongation, its associated risk factors and prescribing patterns of QT prolonging drugs among psychiatric patients. METHOD:A prospective observational study was conducted ... Read more >>

BMC Psychiatry (BMC psychiatry)
[2020, 20(1):277]

Cited: 0 times

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Incidence of suboptimal response to tumor necrosis factor antagonist therapy in inflammatory bowel disease in newly industrialised countries: The EXPLORE study.

Jesus K Yamamoto-Furusho, Othman Al Harbi, Alessandro Armuzzi, Webber Chan, Enrique Ponce de Leon, Jiaming Qian, Marina Shapina, Murat Toruner, Chia-Hung Tu, Byong Duk Ye, Morgane Guennec, Cecilia Sison, Dirk Demuth, Olga Fadeeva, Qasim M Rana Khan,

BACKGROUND:Incidence of inflammatory bowel disease (IBD) is increasing in newly industrialised countries (NICs); however, data on suboptimal response to anti-tumor necrosis factor (anti-TNF) agents are limited. OBJECTIVES:To assess incidence and indicators of suboptimal response to first anti-TNF therapy in IBD patients in NICs. METHODS:A chart review was conducted in ten ... Read more >>

Dig Liver Dis (Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver)
[2020, 52(8):869-877]

Cited: 0 times

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Structure optimization of perovskite quantum dot light-emitting diodes.

Qasim Khan, Alagesan Subramanian, Guannan Yu, Khan Maaz, Delong Li, Rizwan Ur Rehman Sagar, Keqiang Chen, Wei Lei, Babar Shabbir, Yupeng Zhang,

Although all-inorganic perovskite light emitting diodes (PeLED) have satisfactory stability under an ambient atmosphere, producing devices with high performance is challenging. A device architecture with a reduced energy barrier between adjacent layers and optimized energy level alignment in the PeLED is critical to achieve high electroluminescence efficiency. In this study, ... Read more >>

Nanoscale (Nanoscale)
[2019, 11(11):5021-5029]

Cited: 2 times

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Synthesis and optical applications of low dimensional metal-halide perovskites.

Jingying Liu, Keqiang Chen, Sayed Ali Khan, Babar Shabbir, Yupeng Zhang, Qasim Khan, Qiaoliang Bao,

Metal halide perovskites have received substantial attention in research communities due to their outstanding efficiency achievements in the field of photovoltaics, optoelectronics and electronics, exhibiting extraordinary optical, electrical and mechanical properties. The exceptional structural tunability enables perovskite material to possess low-dimensional form at the atomic level and extends their applications ... Read more >>

Nanotechnology (Nanotechnology)
[2020, 31(15):152002]

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Superior Magnetoresistance Performance of Hybrid Graphene Foam/Metal Sulfide Nanocrystal Devices.

M Husnain Zeb, Babar Shabbir, Rizwan Ur Rehman Sagar, Nasir Mahmood, Keqiang Chen, Irfan Qasim, Muhammad Imran Malik, Wenzhi Yu, M Mosarof Hossain, Zhigao Dai, Qingdong Ou, Masroor A Bhat, Bannur Nanjunda Shivananju, Yun Li, Xian Tang, Kun Qi, Adnan Younis, Qasim Khan, Yupeng Zhang, Qiaoliang Bao,

Interfaces between metals and semiconducting materials can inevitably influence the magnetotransport properties, which are crucial for technological applications ranging from magnetic sensing to storage devices. By taking advantage of this, a metallic graphene foam is integrated with semiconducting copper-based metal sulfide nanocrystals, i.e., Cu2ZnSnS4 (copper-zinc-tin-sulfur) without direct chemical bonding and ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2019, 11(21):19397-19403]

Cited: 1 time

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A Color Tunable Quantum-Dot Light-Emitting Diode Device Driven by Variable Voltage.

Khan Qasim, Zhang Zhenbo, Naresh Kumar Khatri, Qingshan Xu, Alagesan Subramanian, Li Qing, Lei Wei,

A hole transporting layer (HTL) consisting of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4'-(N-(4-sec-butylphenyl)diphenylamine)] doped with 4,4'-Bis(9H-carbazol-9-yl)biphenyl was designed for high-performance multicolor quantum-dot light-emitting diode (QLED) fabricated by an all-solution process technique. The band structure of the HTL is tailored via small molecule doping to create a cascade of highest occupied molecular orbital levels (HOMO) from ... Read more >>

J Nanosci Nanotechnol (Journal of nanoscience and nanotechnology)
[2019, 19(2):1038-1043]

Cited: 0 times

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Potential drug-drug interactions in outpatient department of a tertiary care hospital in Pakistan: a cross-sectional study.

Mohammad Ismail, Sidra Noor, Umme Harram, Inamul Haq, Iqbal Haider, Faiza Khadim, Qasim Khan, Zahid Ali, Tahir Muhammad, Muhammad Asif,

BACKGROUND:Potential drug-drug interactions (pDDIs) are one of the preventable drug related problems having the risk of serious adverse events or therapeutic failure. In developing countries like Pakistan, this issue remains poorly addressed. The objective of this study was to explore prevalence of pDDIs in the Outpatient Department (OPD) of a ... Read more >>

BMC Health Serv Res (BMC health services research)
[2018, 18(1):762]

Cited: 1 time

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Moxifloxacin-induced QT interval prolongation and torsades de pointes: a narrative review.

Fahadullah Khan, Mohammad Ismail, Qasim Khan, Zahid Ali,

INTRODUCTION:Moxifloxacin is widely used for the treatment of a number of infectious diseases because of its favorable pharmacological profile and high clinical success rate. However, it is often criticized for its higher risk of QTc interval prolongation (QTIP) and torsades de pointes (TdP). AREAS COVERED:A review of published literature on ... Read more >>

Expert Opin Drug Saf (Expert opinion on drug safety)
[2018, 17(10):1029-1039]

Cited: 3 times

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High prevalence of the risk factors for QT interval prolongation and associated drug-drug interactions in coronary care units.

Qasim Khan, Mohammad Ismail, Iqbal Haider,

OBJECTIVES:Patients admitted in coronary care units are susceptible to QT interval prolongation due to numerous risk factors. The purpose of this study was to identify the prevalence of risk factors for QT interval prolongation; QT prolonging medications; drug-drug interactions; their predictors; and torsades de pointes risks of drugs. METHODS:After obtaining ... Read more >>

Postgrad Med (Postgraduate medicine)
[2018, 130(8):660-665]

Cited: 0 times

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CHIP E3 ligase mediates proteasomal degradation of the proliferation regulatory protein ALDH1L1 during the transition of NIH3T3 fibroblasts from G0/G1 to S-phase.

Qasim A Khan, Peter Pediaditakis, Yuryi Malakhau, Amin Esmaeilniakooshkghazi, Zahra Ashkavand, Valentin Sereda, Natalia I Krupenko, Sergey A Krupenko,

ALDH1L1 is a folate-metabolizing enzyme abundant in liver and several other tissues. In human cancers and cell lines derived from malignant tumors, the ALDH1L1 gene is commonly silenced through the promoter methylation. It was suggested that ALDH1L1 limits proliferation capacity of the cell and thus functions as putative tumor suppressor. ... Read more >>

PLoS ONE (PloS one)
[2018, 13(7):e0199699]

Cited: 4 times

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Interfacial Energy-Level Alignment for High-Performance All-Inorganic Perovskite CsPbBr3 Quantum Dot-Based Inverted Light-Emitting Diodes.

Alagesan Subramanian, Zhenghui Pan, Zhenbo Zhang, Imtiaz Ahmad, Jing Chen, Meinan Liu, Shuang Cheng, Yijun Xu, Jun Wu, Wei Lei, Qasim Khan, Yuegang Zhang,

All-inorganic perovskite light-emitting diode (PeLED) has a high stability in ambient atmosphere, but it is a big challenge to achieve high performance of the device. Basically, device design, control of energy-level alignment, and reducing the energy barrier between adjacent layers in the architecture of PeLED are important factors to achieve ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2018, 10(15):13236-13243]

Cited: 1 time

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Prevalence of the risk factors for QT prolongation and associated drug-drug interactions in a cohort of medical inpatients.

Qasim Khan, Mohammad Ismail, Iqbal Haider, Zahid Ali,

BACKGROUND/PURPOSE:Medical inpatients are at increased risk of QT interval prolongation due to multiple risk actors and QT prolonging drugs. This study aimed to identify the prevalence of risk factors for QT prolongation; QT prolonging medications; associated drug-drug interactions (QT-DDIs); their predictors; and TdP (torsades de pointes) risks of drugs. METHODS:This ... Read more >>

J. Formos. Med. Assoc. (Journal of the Formosan Medical Association)
[2019, 118(1 Pt 1):109-115]

Cited: 0 times

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Camelina sativa as a fallow replacement crop in wheat-based crop production systems in the US Great Plains

Augustine K Obour, Reza K Afshar, Chengci Chen, Qasim Khan, Peggy Lamb, Kent McVay, Yesuf A Mohammed, Eric Obeng, Henry Y Sintim, Valtcho D Zheljazkov,

Oilseed camelina (Camelina sativa [L.] Crantz) has potential to diversify and intensify dryland wheat-based crop production in the US Great Plains. Field experiments were conducted to evaluate camelina as a fallow replacement crop in winter wheat (Triticum aestivum L) − fallow (W-F) crop rotation system across five locations in the ... Read more >>

(Industrial crops and products.)
[2018, 111:22-29]

Cited: 1 time

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Prevalence of QT interval prolonging drug-drug interactions (QT-DDIs) in psychiatry wards of tertiary care hospitals in Pakistan: a multicenter cross-sectional study.

Qasim Khan, Mohammad Ismail, Iqbal Haider, Fahadullah Khan,

Background QT prolongation and associated arrhythmias, torsades de pointes (TdP), are considerable negative outcomes of many antipsychotic and antidepressant agents frequently used by psychiatric patients. Objective To identify the prevalence, levels, and predictors of QT prolonging drug-drug interactions (QT-DDIs), and AZCERT (Arizona Center for Education and Research on Therapeutics) classification ... Read more >>

Int J Clin Pharm (International journal of clinical pharmacy)
[2017, 39(6):1256-1264]

Cited: 2 times

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Frequency, characteristics and risk factors of QT interval prolonging drugs and drug-drug interactions in cancer patients: a multicenter study.

Qasim Khan, Mohammad Ismail, Sehrash Khan,

BACKGROUND:Cancer patients may receive a high number of medications with the potential to prolong QT interval and subsequent TdP (torsades de pointes). This study aimed to identify the prevalence of QT prolonging drugs, their TdP risk, QT prolonging drug-drug interactions (QT-DDIs), levels, predictors, and TdP risk of drugs involved in ... Read more >>

BMC Pharmacol Toxicol (BMC pharmacology & toxicology)
[2017, 18(1):75]

Cited: 4 times

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QT interval prolongation in hospitalized patients on cardiology wards: a prospective observational study.

Qasim Khan, Mohammad Ismail, Iqbal Haider, Inam Ul Haq, Sidra Noor,

Prolonged QT interval may lead to a lethal form of arrhythmia, torsades de pointes (TdP), which is associated with cardiovascular mortality. Therefore, we aimed to identify prevalence of QT interval prolongation, compare clinical characteristics of patients with normal and prolonged QT interval, and identify predictors of QT interval prolongation.A prospective ... Read more >>

Eur. J. Clin. Pharmacol. (European journal of clinical pharmacology)
[2017, 73(11):1511-1518]

Cited: 3 times

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Potential drug-drug interactions in pediatric patients admitted to intensive care unit of Khyber Teaching Hospital, Peshawar, Pakistan: A cross-sectional study.

Mohammad Ismail, Sana Aziz, Sidra Noor, Iqbal Haider, Faryal Shams, Inamul Haq, Faiza Khadim, Qasim Khan, Fahadullah Khan, Muhammad Asif,

To investigate frequencies, levels, clinical relevance and predictors of potential drug-drug interactions (pDDIs) in pediatric intensive care unit (PICU).Case notes of 411 patients were reviewed for pDDIs through Micromedex. Frequencies, levels and clinical relevance of pDDIs were reported. Logistic regression was applied to calculate the odds-ratios for predictors of pDDIs.We ... Read more >>

J Crit Care (Journal of critical care)
[2017, 40:243-250]

Cited: 3 times

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Identification and Fibrosis Staging of Hepatitis C Patients Using the Electronic Medical Record System.

Vijay Anand, Christian Hyun, Qasim M Khan, Curtis Hall, Norbert Hessefort, Amnon Sonnenberg, Claus J Fimmel,

The aim of this study was to noninvasively assess the severity of chronic hepatitis C virus (HCV) in large patient populations. It would be helpful if fibrosis scores could be calculated solely on the basis of data contained in the patients' electronic medical records (EMR). We performed a pilot study ... Read more >>

J. Clin. Gastroenterol. (Journal of clinical gastroenterology)
[2016, 50(8):664-669]

Cited: 1 time

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Yield performance and stability of dry pea and lentil genotypes in semi-arid cereal dominated cropping systems

Yesuf Assen Mohammed, Brooke Bohannon, Chengci Chen, Jeffrey Holmes, John Miller, Joyce Eckhoff, Kent McVay, Kevin McPhee, Marty Knox, Peggy Lamb, Perry Miller, Qasim Khan,

The promotion of dry pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) production in cereal dominated cropping systems require identifying high yielding and widely adapted genotypes for a diverse range of environments. However, this information is rarely available in the semi-arid temperate region. We carried out two separate experiments ... Read more >>

Field Crops Res. (Field crops research)
[2016, 188:31-40]

Cited: 0 times

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Surface plasmon-enhanced quantum dot light-emitting diodes by incorporating gold nanoparticles.

Jiangyong Pan, Jing Chen, Dewei Zhao, Qianqian Huang, Qasim Khan, Xiang Liu, Zhi Tao, Zichen Zhang, Wei Lei,

Surface plasmon-enhanced electroluminescence (EL) has been demonstrated by incorporating gold (Au) nanoparticles (NPs) in quantum dot light-emitting diode (QLED). Time-resolved photoluminescence (TRPL) spectroscopy reveals that the EL enhancement is ascribed to the near-field enhancement through an effective coupling between excitons of the quantum dot emitters and localized surface plasmons around ... Read more >>

Opt Express (Optics express)
[2016, 24(2):A33-43]

Cited: 5 times

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Broadband photodetectors based on graphene-Bi2Te3 heterostructure.

Hong Qiao, Jian Yuan, Zaiquan Xu, Caiyun Chen, Shenghuang Lin, Yusheng Wang, Jingchao Song, Yan Liu, Qasim Khan, Hui Ying Hoh, Chun-Xu Pan, Shaojuan Li, Qiaoliang Bao,

Recently, research on graphene based photodetectors has drawn substantial attention due to ultrafast and broadband photoresponse of graphene. However, they usually have low responsivity and low photoconductive gain induced by the gapless nature of graphene, which greatly limit their applications. The synergetic integration of graphene with other two-dimensional (2D) materials ... Read more >>

ACS Nano (ACS nano)
[2015, 9(2):1886-1894]

Cited: 42 times

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Continuous graphene and carbon nanotube based high flexible and transparent pressure sensor arrays.

Xiaoxiang Zhang, Songtao Hu, Meng Wang, Jia Yu, Qasim Khan, Jintang Shang, Long Ba,

The transparent pressure sensing arrays durable to severe deformation are fabricated by covering the continuous graphene sheets on the tip of thermal plastic polyurethane (TPU) pyramids, while most of the TPU surface is covered by a layer of densely entangled single wall carbon nanotubes. The transparency of the conducting layer ... Read more >>

Nanotechnology (Nanotechnology)
[2015, 26(11):115501]

Cited: 3 times

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Quantum dots for light emitting diodes.

Khan Qasim, Wei Lei, Qing Li,

In this article we discuss the development and key advantages of quantum dot based light emitting diode (QD-LED) and other applications based on their color purity, stability, and solution processibility. Analysis of quantum dot based LEDs and the main challenges faced in this field, such as the QD luminescence quenching, ... Read more >>

J Nanosci Nanotechnol (Journal of nanoscience and nanotechnology)
[2013, 13(5):3173-3185]

Cited: 0 times

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Same-day thyroidectomy program: eligibility and safety evaluation.

Haggi Mazeh, Qasim Khan, David F Schneider, Sarah Schaefer, Rebecca S Sippel, Herbert Chen,

BACKGROUND: Same-day thyroidectomy has not gained widespread acceptance owing to concerns of life-threatening complications. The aim of this study is to describe a single institution same-day thyroidectomy results. METHODS: We included patients who underwent thyroid surgery between 2005 and 2011 by a single surgeon. The outcomes of patients who underwent ... Read more >>

Surgery (Surgery)
[2012, 152(6):1133-1141]

Cited: 27 times

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Enhanced electrical efficiency of quantum dot based LEDs with TiO2 as the electron transport layer fabricated under the optimized annealing-time conditions.

Khan Qasim, Jing Chen, Yidan Zhou, Wei Lei,

We report Quantum dot based light emitting diodes (QD-LEDs) fabricated under the optimized annealing conditions of TiO2 films used as the electron transport layer (ETL) in the device. Films of different thicknesses were fabricated by varying annealing conditions leading to the improved electrical properties in QD-LEDs. Under the optimized annealing ... Read more >>

J Nanosci Nanotechnol (Journal of nanoscience and nanotechnology)
[2012, 12(10):7879-7884]

Cited: 0 times

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