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Riaz M, Akbar I, Hassan RE, Ahmad W, Khan H, Khan AU, Khan MH, Shah SS, Tahir A, Tanveer S. Effect of Coca-Cola on the Dissolution of Persimmon-Related Phytobezoar in a Tertiary Care Hospital. Cureus 2024; 16:e54420. [PMID: 38510864 PMCID: PMC10951130 DOI: 10.7759/cureus.54420] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2024] [Indexed: 03/22/2024] Open
Abstract
Introduction Bezoars, masses of indigestible foreign bodies formed in the gastrointestinal tract, pose challenges in their management. Phytobezoars are particularly problematic due to their difficult diagnosis and resilience towards treatment. Recently, Coca-Cola has emerged as a potential solution due to its acidic composition and mucolytic properties. However, existing evidence is limited, highlighting the need for comprehensive studies. This research explores the efficacy of Coca-Cola in dissolving persimmon-related phytobezoars, aiming to contribute valuable insights to non-invasive treatment options. Material and methods Conducted as a descriptive case series, this study employed gastric cola lavage using non-probability purposive sampling. Patients aged 18-70 with persimmon-related phytobezoars were included. Two nasogastric tubes were inserted for cola lavage over 12 hours, utilizing three liters of cola until the disappearance of symptoms. When the bezoar disappeared, it was considered as complete success to the treatment. Results Out of 31 patients, 45.2% were male and 54.8% were female, with a mean age of 56.77 ± 9.01 years. Efficacy was noted in 54.8% of cases. Age less than 50 and no history of diabetes mellitus were associated with higher chances of treatment success (p-value ≤0.05). Conclusion Ingestion of Coca-Cola was highly effective, safe, and reliable for the dissolution of persimmon-related phytobezoars, as the frequency of efficacy was high in our study. Coca-Cola ingestion is a non-invasive and cost-effective mode of phytobezoar dissolution that should be taken as a first-line initial treatment option to attain desired outcomes.
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Affiliation(s)
- Maryam Riaz
- Surgery, Ayub Teaching Hospital, Abbottabad, PAK
| | - Ismail Akbar
- Surgery, Ayub Teaching Hospital, Abbottabad, PAK
| | - Rao E Hassan
- Orthopedics and Trauma, Khyber Teaching Hospital-Medical Training Institute (MTI), Peshawar, PAK
| | - Waheed Ahmad
- General Surgery, Hayatabad Medical Complex-Medical Training Institute (MTI), Peshawar, PAK
| | - Hassamullah Khan
- General Surgery, Hayatabad Medical Complex-Medical Training Institute (MTI), Peshawar, PAK
| | | | | | - Syeda Sunaina Shah
- General Surgery, Hayatabad Medical Complex-Medical Training Institute (MTI), Peshawar, PAK
| | - Asna Tahir
- Ophthalmology, Khyber Teaching Hospital-Medical Training Institute (MTI), Peshawar, PAK
| | - Safina Tanveer
- Surgery, Khyber Teaching Hospital-Medical Training Institute (MTI), Peshawar, PAK
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Hassan RE, Khan L, Shah SH, Naeem H, Noor N, Iqbal M, Dawood Khan F, Rehman Z, Ahmad W, Tanveer S, Khan AU, Shah SH. Surgical Strategies for Ingrown Toenails: A Comprehensive Review of Techniques, Outcomes, and Advancements. Cureus 2024; 16:e52501. [PMID: 38371148 PMCID: PMC10874229 DOI: 10.7759/cureus.52501] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2024] [Indexed: 02/20/2024] Open
Abstract
Ingrown toenail (IGTN), known as onychocryptosis or unguis incarnatus, is a painful condition affecting the big toe, with symptoms including pain, inflammation, and infection. This review explores surgical options for IGTN, categorized into altering the nail plate or diminishing periungual tissues. Conservative treatments alleviate early-stage symptoms, while surgical interventions are reserved for severe cases. Various surgical techniques are discussed, such as the Winograd technique, Vandenbos procedure, chemical matricectomy, radiofrequency ablation, bipolar diathermy, carbon dioxide laser ablation, Zadik's procedure, Howard-Dubois procedure, Super U procedure, Noël's procedure, knot technique, and toenail paronychium flap. The choice of procedure depends on the severity and recurrence of IGTN.
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Affiliation(s)
- Rao E Hassan
- Orthopaedics and Trauma, Khyber Teaching Hospital Medical Teaching Institute (MTI), Peshawar, PAK
| | - Luqman Khan
- Orthopaedics and Trauma, Khyber Teaching Hospital Medical Teaching Institute (MTI), Peshawar, PAK
| | | | - Hamid Naeem
- Cardiac Surgery, Rehman Medical Institute, Peshawar, PAK
| | - Nazish Noor
- Dermatology, Lady Reading Hospital Medical Teaching Institute (MTI), Peshawar, PAK
| | - Momina Iqbal
- Surgery, Ayub Teaching Hospital, Abbottabad, PAK
| | | | - Zahir Rehman
- Surgery, Ayub Teaching Hospital, Abbottabad, PAK
| | - Waheed Ahmad
- General Surgery, Hayatabad Medical Complex Medical Teaching Institute (MTI), Peshawar, PAK
| | - Shafiq Tanveer
- Ophthalmology, Khyber Teaching Hospital Medical Teaching Institute (MTI), Peshawar, PAK
| | | | - Syed Hassnain Shah
- Orthopaedics and Trauma, Pakistan Institute of Medical Sciences, Islamabad, PAK
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Hassan RE, Akbar I, Khan AU, Hameed MB, Raza M, Shah SH, Shah SH, Haroon H, Hanzala RA. A Clinical Audit of Operation Notes Documentation and the Impact of Introducing an Improved Proforma: An Audit Cycle. Cureus 2023; 15:e50281. [PMID: 38196411 PMCID: PMC10776173 DOI: 10.7759/cureus.50281] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2023] [Indexed: 01/11/2024] Open
Abstract
Introduction Accurate and comprehensive documentation of surgical procedures is vital in healthcare for both medical and legal purposes. This audit assessed adherence to international guidelines for operative note documentation in a general surgery department and the impact of introducing educational initiatives and an enhanced proforma. Methods A retrospective audit of 100 operative notes was conducted in April 2023, followed by a prospective re-audit of another 100 notes in October-November 2023. A checklist based on Royal College of Surgeons (RCS) guidelines assessed 20 parameters. An improved proforma and an awareness session for surgeons were implemented between audits. Data analysis utilized the IBM SPSS Statistics for Windows, Version 26.0 (Released 2019; IBM Corp., Armonk, New York, United States). A paired-sample t-test was used, and a p-value < 0.001 was considered statistically significant. Results The initial audit revealed discrepancies in documentation, with missing information on deep vein thrombosis (DVT) prophylaxis, elective/emergency settings, anticipated blood loss, closure technique specifics, and prosthesis/mesh details. Legibility was satisfactory in 88% of notes. After implementing the proforma and awareness session, significant improvements were observed in all parameters, with documentation rates exceeding 91%. Overall documentation completeness increased from 65.2% to 95.2%. Results of the paired-sample t-test indicated a significant difference before and after the introduction of the new proforma (Mean (M) = 65.2, standard deviation (SD) = 34.3 versus M = 95.2, SD = 4.3) with a p-value of 0.0005. Conclusion Regular audits, surgeon education, and standardized proformas are essential for maintaining high standards in operative note documentation, contributing to improved patient care and safety.
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Affiliation(s)
| | - Ismail Akbar
- Department of Surgery, Ayub Teaching Hospital, Abbottabad, PAK
| | - Arif Ullah Khan
- Department of Surgery, Ayub Teaching Hospital, Abbottabad, PAK
| | | | - Muhammad Raza
- Department of General Surgery, Ayub Medical College, Abbottabad, PAK
| | - Syed H Shah
- Department of Emergency Medicine, Russells Hall Hospital, Dudley, GBR
| | - Syed H Shah
- Department of Orthopaedics and Trauma, Pakistan Institute of Medical Sciences, Islamabad, PAK
| | - Hamza Haroon
- Department of Surgery, Ayub Teaching Hospital, Abbottabad, PAK
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Biswas D, Nag S, Khan AU, Ahamed F, Karim MR, Hasan MR, Haque AK. Hypoalbuminaemia as a Marker of Severity of Patients of Community Acquired Pneumonia. Mymensingh Med J 2023; 32:968-974. [PMID: 37777888] [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: 10/02/2023]
Abstract
Community-acquired pneumonia (CAP) is a common presentation with an acute infection of the pulmonary parenchyma occurring in the community level. Despite the availability of potent antibiotics, it remains as a serious illness with significant morbidity and mortality in both developed and developing countries. This study was undertaken to determine the relation between serum Albumin and severity of CAP. This was a cross sectional descriptive study which was carried out in the Department of Medicine of Mymensingh Medical College Hospital (MMCH), Bangladesh from July 2019 to December 2019. The sample size was 67. Purposive sampling technique was employed. Patients of community acquired pneumonia (CAP), aged ≥14 years of both sex with recently developed radiological pulmonary shadowing with compatible clinical symptoms and signs were included. Patients who were chronically immunosuppressed, with chronic starvation, advanced liver disease or chronic kidney disease with or without receiving haemodialysis were excluded. Data analysis was done by SPSS software for Windows (version 23.0). The mean age 65.7±15.3 years, majority 13(19.4%) patients had chronic lung disease, 12(17.9%) had diabetes mellitus, 9(13.4%) had heart failure, 6(9.0%) had cerebrovascular disease, 6(9.0%) had neoplastic disease and 5(7.5%) had chronic renal failure. Majority 22(32.8%) patients had CURB-65 score 3, out of which 12(54.5%) had albumin level <20g/l, 9(40.9%) had albumin level 20.0-24.9g/l and 1(4.5%) had albumin level 25-29g/l. 17(25.4%) had score 4-5 out of which 10(58.8%) had albumin level <20g/l and 7(41.2%) had albumin level 20.0-24.9g/l, 15(22.4%) had score 2 and 13(19.4%) had score 0-1. Negative significant correction (r=-0.782; p=0.001) was found between CURB-65 score and albumin level. Significant number of patients with severe CAP show low serum albumin level at admission which is statistically significant when compared with CURB-65 score. Thus hypoalbuminaemia may be a good marker of severity of patients with CAP.
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Affiliation(s)
- D Biswas
- Dr Debashish Biswas, Indoor Medical Officer, Department of Medicine, Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh
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Saeed MA, Waheed U, Ehtisham-Ul-Haque S, Khan AU, Kashif M, Qamar MF, Ghafoor A, Saqlain M, Asghar J. Incidence and molecular characterization of extended-spectrum beta-lactamase (ESBL)-producing Salmonella enterica and Escherichia coli of avifauna origin in Pakistan. Pol J Vet Sci 2023; 26:47-55. [PMID: 36961268 DOI: 10.24425/pjvs.2023.145006] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
Members of Enterobacteriaceae are known to produce extended-spectrum beta-lactamases (ESBL) which hydrolyze the beta-lactam group of antibiotics. The existence of ESBL-producing Salmonella enterica (S. enterica) and Escherichia coli (E. coli) harbored by urban avifauna was investigated in this study. Dropping samples (n= 180) were collected from six different bird species in the district Jhang, Punjab province, Pakistan. Isolation and identification of ESBL isolates were made by using cefotaxime- (4 mg/L) supplemented MacConkey agar and double disc synergy test (DDST). Polymerase chain reaction (PCR) was performed for the detection of four different ESBL genes including blaCTX-M, blaTEM, blaSHV and blaOXA. A total of 42.69% isolates were confirmed as ESBL via DDST including 30.64% S. enterica and 49.54% E. coli. The incidence of ESBL S. enterica and ESBL E. coli was found highest in egret (Ardea alba) and pigeon (Columba livia) as 64.28% and 78.95%, respectively. The blaCTX-M gene was detected in 57.89% and 64.81% of isolates of S. enterica and E. coli, respectively. Among other genes in S. enterica and E. coli, blaTEM (21.05%, 20.4%); blaSHV (15.78%, 9.26%), and blaOXA (5.26%, 5.56%) were detected, respectively. All of the tested isolates were found resistant to at least one of the thirteen antimicrobial agents except meropenem. To the best of our knowledge, this is the first study reporting the incidence and genetic diversity of ESBL bacteria associated with urban avifauna in Pakistan. The urban avifauna can serve as a potential subject of bio-surveillance to monitor the emergence of antimicrobial-resistant bacteria.
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Affiliation(s)
- M A Saeed
- Department of Pathobiology, University of Veterinary and Animal Sciences, Lahore, CVAS Campus, 12-Km Chiniot Road, Jhang, 35200, Pakistan
| | - U Waheed
- Department of Pathobiology, University of Veterinary and Animal Sciences, Lahore, CVAS Campus, 12-Km Chiniot Road, Jhang, 35200, Pakistan
| | - S Ehtisham-Ul-Haque
- Department of Pathobiology, University of Veterinary and Animal Sciences, Lahore, CVAS Campus, 12-Km Chiniot Road, Jhang, 35200, Pakistan
| | - A U Khan
- Department of Pathobiology, University of Veterinary and Animal Sciences, Lahore, CVAS Campus, 12-Km Chiniot Road, Jhang, 35200, Pakistan
| | - M Kashif
- Department of Clinical Sciences, University of Veterinary and Animal Sciences, Lahore, CVAS Campus, 12-Km Chiniot Road, Jhang, 35200, Pakistan
| | - M F Qamar
- Department of Pathobiology, University of Veterinary and Animal Sciences, Lahore, CVAS Campus, 12-Km Chiniot Road, Jhang, 35200, Pakistan
| | - A Ghafoor
- Institute of Microbiology, University of Veterinary and Animal Sciences, Outfall Road, Lahore, 54000, Pakistan
| | - M Saqlain
- Department of Pathobiology, University of Veterinary and Animal Sciences, Lahore, CVAS Campus, 12-Km Chiniot Road, Jhang, 35200, Pakistan
| | - J Asghar
- Department of Pathobiology, University of Veterinary and Animal Sciences, Lahore, CVAS Campus, 12-Km Chiniot Road, Jhang, 35200, Pakistan
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Zia A, Hakim S, Khan AU, Bey A, Ateeq H, Parveen S, Khalid S, Yusufi F. Bone markers and bone mineral density associates with periodontitis in females with poly-cystic ovarian syndrome. J Bone Miner Metab 2022; 40:487-497. [PMID: 35072780 DOI: 10.1007/s00774-021-01302-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 08/25/2021] [Accepted: 12/10/2021] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Studies suggest an association between poly-cystic ovarian syndrome (PCOS) and chronic periodontitis (CP), both being inflammatory conditions. However, insufficient evidence assesses the impact of this inflammation on bone metabolism and bone turnover markers (BTMs). The present study aimed to determine the association between BTMs, bone mineral density (BMD), and clinical periodontal parameters in PCOS women with CP. MATERIALS AND METHODS Three groups, each with 40 newly diagnosed (1) PCOS+CP, (2) PCOS alone, (3) CP alone, and fourth group (n = 20) systemically and periodontally healthy females aged 18-30 years were included in the study. Full mouth clinical periodontal parameters, C-terminal telopeptides of type I collagen (CTX), bone alkaline phosphatase (ALP), BMD and 25-hydroxyvitamin D (VD) were recorded for all. RESULTS Low BMD (0.89 ± 0.11 g/cm2), increased CTX levels (2.76 ± 4.64 ng/ml), decreased bone ALP levels (11.09 ± 6.86 ng/ml), higher VD levels (289.02 ± 168.28 nmol/l) and poor clinical periodontal status were observed in PCOS + CP females. BMD-spine showed weak positive correlation with CTX, bone ALP, VD (r = 0.02, r = 0.07, r = 0.15, respectively) in PCOS + CP group. ANCOVA depicted covariates had no confounding effect. Multiple regression model explained 21.0% for BMD-spine and 12.7% for BMD-femur of total variability signifying association with all measured parameters among all groups. CONCLUSION Enhanced inflammatory thrust by periodontitis increases CTX levels and decreases bone ALP and BMD levels in women with PCOS. Screening PCOS women for periodontal disease and vice versa may have a direct bearing on overall bone health.
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Affiliation(s)
- Afaf Zia
- Department of Periodontics and Community Dentistry, Dr. Ziauddin Ahmed Dental College (DRZADC), Aligarh Muslim University (AMU), Aligarh, 202002, Uttar Pradesh, India.
| | - S Hakim
- Department of Obstetrics and Gynaecology, Jawaharlal Nehru Medical College and Hospital (JNMCH), AMU, Aligarh, Uttar Pradesh, India
| | - A U Khan
- Interdisciplinary Biotechnology Unit, AMU, Aligarh, Uttar Pradesh, India
| | - A Bey
- Department of Periodontics and Community Dentistry, Dr. Ziauddin Ahmed Dental College (DRZADC), Aligarh Muslim University (AMU), Aligarh, 202002, Uttar Pradesh, India
| | - H Ateeq
- Department of Biochemistry, AMU, Aligarh, Uttar Pradesh, India
| | - S Parveen
- Department of Obstetrics and Gynaecology, Jawaharlal Nehru Medical College and Hospital (JNMCH), AMU, Aligarh, Uttar Pradesh, India
| | - S Khalid
- Interdisciplinary Biotechnology Unit, AMU, Aligarh, Uttar Pradesh, India
| | - Fnk Yusufi
- Department of Statistics and Operations, AMU, Aligarh, Uttar Pradesh, India
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Shah SIA, Tipu MY, Aslam A, Khan AU, Shafee M, Khan SA, Khan NU, Akbar A. Elucidating antiviral activity of Curcuma longa against H9 N2 influenza virus using embryonated chicken egg model. Trop Biomed 2021; 38:353-359. [PMID: 34508343 DOI: 10.47665/tb.38.3.078] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Curcumin is a potent antimicrobial herb used traditionally as a spice in culinary. This study was designed to evaluate the antiviral effects of curcuma longa extract against H9 influenza virus. A total of 60 embryonated eggs were equally divided into 5 groups with 12 eggs in each group. Group 1 (G1) served as uninfected negative control. Whereas Group 2 (G2) was kept as positive control infected with known virus @ 0.2 ml with 10-9.3 EID50. Group 3 (G3) was offered Curcuma longa @ 0.2 mg/0.2 ml and H9N2 virus (@ 0.2 ml with 10-9.3 EID50. Similarly, Group 4 (G4) was inoculated with extract of Curcuma longa @ 0.2 mg/0.2 ml per egg, whereas Group 5 (G5) was given Ribazole @ 0.2 ml/ egg. The crude extract and virus were administered on the 15th day of incubation and were checked after every 24 hours up to 96th hour post inoculation by random selection of 3 eggs. Death and survival rate were noted in all groups. Gross and histopathological lesions were also observed. Results revealed that Curcuma longa extract had significantly (p<0.05) reduced the mortality rate of embryos infected with H9N2 virus. In G3, increased lymphocytes and mild fatty changes were seen in liver. Whereas, mature RBCs, plasma cells and some lymphoblast's were observed in Spleen. Similarly, the bursa follicles were with lymphocytic aggregation. The G4 (Curcuma longa) and G5 (Ribazole) were with maximum embryo survival after 48 and 72 h post inoculation. This study revealed potential antiviral activity of Curcuma longa against H9N2 influenza viruses and can be opted as alternative to antibiotics and antiviral drugs to minimize the antimicrobial resistance in human and animal population.
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Affiliation(s)
- S I A Shah
- Department of Pathology, University of Veterinary & Animal Sciences, Lahore, Pakistan
| | - M Y Tipu
- Department of Pathology, University of Veterinary & Animal Sciences, Lahore, Pakistan
| | - A Aslam
- Department of Pathology, University of Veterinary & Animal Sciences, Lahore, Pakistan
| | - A U Khan
- Department of Pathology, University of Veterinary & Animal Sciences, Lahore, Pakistan
| | - M Shafee
- Center for Advanced Studies in Vaccinology & Biotechnology (CASVAB) University of Balochistan, Quetta, Pakistan
| | - S A Khan
- Center for Advanced Studies in Vaccinology & Biotechnology (CASVAB) University of Balochistan, Quetta, Pakistan
| | - N U Khan
- Abdul Wali Khan University, Mardan Khyber Pakhtunkhwa, Pakistan
| | - A Akbar
- Department of Microbiology, University of Balochistan, Quetta 87300 Balochistan, Pakistan
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Tariq M, Khan AU, Rehman AU, Ullah S, Jan AU, Zakareya, Khan ZUH, Muhammad N, Islam ZU, Yuan Q. Green synthesis of Zno@GO nanocomposite and its' efficient antibacterial activity. Photodiagnosis Photodyn Ther 2021; 35:102471. [PMID: 34343667 DOI: 10.1016/j.pdpdt.2021.102471] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 07/07/2021] [Accepted: 07/29/2021] [Indexed: 11/24/2022]
Abstract
Nanotechnologyapplications in the field of biomedicine like drug delivery, cell labeling, and bacterial inhibition are growing . New nano-materials having less toxicity and excellent antibacterial activity attract research interest. In the current study, while taking advantage of green synthesis we have decorated zinc oxide on the surface of grephene oxide forming Zno@GO nanocomposite. The Transmission electron microscopy (TEM) study showed successfully synthesized trigonal small sizes ZnO on the surface of GO nanosheets. The as-synthesized ZnO@GO was used against MDR gram-negative pathogen E-coli (BL21 DE3) and showed excellent antibacterial activity killing about 95 % toxic bacteria within 5 h due to electrostatic interaction between cell membrane of E. coli (BL21 DE3) and ZnO@GO complex. Hence the nano composite subsequently penetrated into the cytoplasm by damaging the cell membrane of bacteria, as a result production of ROS into the cytoplasm led to imbalance of metabolic system in the cell. Moreover, the cell membrane damage of gram-negative bacteria verified through zeta potential and propidium iodide (PI) study. Thus, our study develops a way to solve the challenge of efficient design of a drug delivery system for dissolution enhancement according to the need for required drug release.
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Affiliation(s)
- Muhammad Tariq
- State Key Laboratory of Water Environment Simulation, Beijing normal university, No 19, Xinjiekouwai street, Haidian District, Beijing 100875, People's Republic of China; Beijing Advaced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Arif Ullah Khan
- Beijing Advaced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
| | - Aziz Ur Rehman
- Beijing Advaced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Sadeeq Ullah
- Beijing Advaced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Amin Ullah Jan
- Department of Biotechnology, Shaheed Benazir Bhutoo University Sheringal Dir Upper, Kpk, Pakistan
| | - Zakareya
- Beijing Advaced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Zia Ul Haq Khan
- Department of Environmental Sciences, COMSATS University, Vehari 61100, Pakistan
| | - Nawshad Muhammad
- Department of Dental Materials, Institute of basic medical Sciences Khyber Medical University Peshawar, Pakistan
| | - Zia Ul Islam
- Department of Biotechnology, Shaheed Benazir Bhutoo University Sheringal Dir Upper, Kpk, Pakistan
| | - Qipeng Yuan
- Beijing Advaced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
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Ullah I, Afridi SG, Khan AU, Israr M, Ali A, Shams S, Jabeen H, Rasool A, Akbar F, Rahat MA, Haris M, Khan A, Siraj M, Shah M. PCR-RFLP Based genetic diversity of Plasmodium vivax genotypes in district Mardan, Pakistan. BRAZ J BIOL 2021; 82:e241110. [PMID: 34133560 DOI: 10.1590/1519-6984.241110] [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: 07/23/2020] [Accepted: 09/09/2020] [Indexed: 11/22/2022] Open
Abstract
Plasmodium vivax is the most common human malaria parasite in Asian countries including Pakistan. Present study was designed to explore the genetic diversity of plasmodium vivax genotypes based on Pvmsp-3α and Pvmsp-3βgenes using allelic specific nested PCR and RFLP assays markers from field isolates in district Mardan, Pakistan. Blood samples of 200 P. vivax malarial patients were collected after taking their written informed consent. Genetic diversity in nested PCR products was determined by Restriction Fragment Length Polymorphism (RFLP) utilizing Alu1 and PstI restriction enzymes for alpha and beta gene products digestion, respectively. For analysis the genetic diversity of the sub allelic variants of Pvmsp3α and Pvmsp3β genes, Chi-Square test was performed by utilizing Minitab programming software 18. The P value 0.05 was considered as statistically significant. For Pvmsp-3α genes after gel electrophoresis of digested products, four distinct genotypes were obtained from total of 50 samples; type A: 35 (70%) (1.5-2.0 kb), 12 of type B (24%) (1.5-1.7 kb), 2 of type C (4%) (0.5-1.5) and one for type D (2%) (0.5-0.65 kb) which could be characterized into 9 allelic pattern (A1-A4, B1-B3, C1, D), in which A3 remained the most predominant. For Pvmsp-3βgenes, three distinct genotypes were obtained from 50 samples; 40(80%) of type A (1.5-2.5 kb), 9 (18%) of type B (1.0-1.5kb) and 1(2%) of type C (0.65 kb) which could be characterized into 6 allelic patterns (A1-A3, B1-B2, and C1). Most dominant one in Type A was A1 alleles which were noted (46%), while in Type B, the most dominant were B1 (10%).This study is the first ever report of molecular epidemiology and genetic variation in Pvmsp-3α and Pvmsp-3β genes of P. vivax isolates by using PCR/RFLP from District Mardan and showed a remarkable level of genetic diversity in the studied genes of circulating parasites in the study area. The results of this study will contribute in future studies about the genetic structure of parasite and vaccine development against the malaria.
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Affiliation(s)
- I Ullah
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - S G Afridi
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - A U Khan
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - M Israr
- Department of Forensic Sciences, University of Swat, Swat, Pakistan
| | - A Ali
- Department of Biochemistry, Saidu Medical College, Saidu Sharif, Swat, Pakistan
| | - S Shams
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - H Jabeen
- Department of Microbiology, Women University Mardan, Mardan, Pakistan
| | - A Rasool
- Centre for Biotechnology & Microbiology, University of Swat, Swat, Pakistan
| | - F Akbar
- Centre for Biotechnology & Microbiology, University of Swat, Swat, Pakistan
| | - M A Rahat
- Department of Genetics, Hazara University Mansehra, Pakistan
| | - M Haris
- Department of Genetics, Hazara University Mansehra, Pakistan
| | - A Khan
- Department of Genetics, Hazara University Mansehra, Pakistan
| | - M Siraj
- Department of Zoology, Abbottabad University of Science & Technology, Abbottabad, Pakistan
| | - M Shah
- Centre for Animal Sciences & Fisheries, University of Swat, Swat, Pakistan
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Tahir AA, Ali KM, Khan AU, Kamal S, Hussain A, Khan AU. 321 Role of Antibiotics in Acute uncomplicated diverticulitis, A Systematic Review and Meta-Analysis. Br J Surg 2021. [DOI: 10.1093/bjs/znab134.404] [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
Abstract
Introduction
Diverticular disease is a common health problem with a wide clinical spectrum. About 75% of the patients would have uncomplicated diverticulitis. Cornerstones of treatment are antibiotics, analgesia, and dietary advice. Recent evidence has shown that its treatment is controversial, questioning the use of antibiotics. Aim is to assess the role of antibiotics in the treatment of acute uncomplicated diverticulitis.
Method
This is a systematic review and Meta-analysis. Literature review of the available studies was conducted using search engines like Pubmed, Medline, Embase, Google Scholar, and Cochrane databases. Statistical analysis was conducted using RevMan5.4.
Results
Out of 1754 records 1324 were duplicates, 430 studies were screened. 395 were further excluded.35 full text articles were assessed and in the final review 10 studies were included. PRISMA guidelines were used. Pooled OR for recurrence = 0.92 (95% CI = 0.74 to 1.13). Pooled OR for Hospital stay= -0.66 (95% CI= -1.12 to -0.21). Pooled OR for complications = 1.06 (95% CI = 0.69 to 1.64). Pooled OR for treatment failure= 1.24 (95% CI = 0.90-1.69).
Conclusions
We conclude that from the available evidence antibiotics have no role in reducing recurrence, complications, treatment failure, and duration of hospital stay in acute uncomplicated diverticulitis.
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Affiliation(s)
- A A Tahir
- University Hospital of North Midlands, Stoke on Trent, United Kingdom
| | - K M Ali
- Wishaw General Hospital, Livingston, United Kingdom
| | - A U Khan
- Medical University of Pleven, Pleven, Bulgaria
| | - S Kamal
- Pak International Medical college, Peshawar, Pakistan
| | - A Hussain
- Mid Cheshire NHS Foundation Trust, Crewe, United Kingdom
| | - A U Khan
- Mid Cheshire NHS Foundation Trust, Crewe, United Kingdom
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Ahmed S, Khan S, Janjua K, Imran I, Khan AU. Allelic and genotype frequencies of major CYP2B6 polymorphisms in the Pakistani population. Mol Genet Genomic Med 2021; 9:e1527. [PMID: 33599403 PMCID: PMC8104158 DOI: 10.1002/mgg3.1527] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/04/2020] [Accepted: 09/25/2020] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Cytochrome P450 (CYP2B6) is an important enzyme that metabolizes about 3.0% of therapeutic drugs. Drugs metabolized mainly by CYP2B6 include artemisinin, bupropion, cyclophosphamide, efavirenz, ketamine, and methadone. The genetic polymorphisms in the CYP2B6 gene have earlier been studied in many populations, but the data are lacking for the Pakistani population. This research study aimed to determine the frequencies of the three of the most important variant alleles and genotypes of the CYP2B6 gene in the Pakistani population. METHODS Blood was withdrawn from healthy volunteers after taking informed consent. DNA was extracted using commercial kits, and allelic and genotype frequencies were determined after PCR amplification followed by restriction fragment length polymorphism (RFLP) and gel electrophoresis. RESULTS Our results show a minor allele frequency of 33.8% for CYP2B6*6, 25.8% for CYP2B6*4, 6.5% for CYP2B6*3, whereas wild-type genotype frequency was 48.57% for CYP2B6*6, 59.79% for CYP2B6*4, and 90.20% for CYP2B6*3. A significant interethnic variation was also observed. CONCLUSIONS Our results suggest that the frequency of poor metabolizers of CYP2B6, especially *6 variant, is significant enough in the Pakistani population to be given an important consideration when drugs metabolized by this enzyme are prescribed.
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Affiliation(s)
- Sagheer Ahmed
- Department of Basic Medical Sciences, Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Saeed Khan
- Dow International Medical College, Dow University of Health Sciences, Karachi, Pakistan
| | - Kholood Janjua
- Shifa Clinical Research Center, Shifa International Hospital, Islamabad, Pakistan
| | - Imran Imran
- Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Arif Ullah Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
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Islam AS, Ara ZG, Bhuiyan GR, Khan AU, Khan MM. Clinicopathological Findings of Haematological Malignancies in Hospital Admitted Patients. Mymensingh Med J 2021; 30:28-34. [PMID: 33397847] [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: 06/12/2023]
Abstract
The global burden of cancer is gradually rising. In our context we are also facing the same problem. Hematological malignancies (HMs) are important component of cancer. Early diagnosis and proper treatment at right time, a good number of HMs patients can be cured or lengthening the survival period. For this purpose a proper diagnostic criteria should be developed in our settings. This research work is carried out to find out the clinicopathological findings of HMs in our population. This was a cross-sectional descriptive type of observational study conducted in the Department of Medicine and Hematology of Mymensingh Medical College Hospital, Bangladesh from July 2016 to June 2017. Total 45 patients were purposively selected on the basis of inclusion and exclusion criteria with a view to observe the clinical and laboratory findings. Mean age of the patients was 44.5 years. Highest average age (70 years) was found in chronic lymphocytic leukaemia (CLL) and lowest (29 years) in acute lymphoblastic leukaemia (ALL). Majority of the respondents were male in all HMs except in non-Hodgkin's lymphoma (NHL) where male-female ratio was 0.3:7. Among male most of them were farmers or day laborers and most of the females were housewife. Almost all patients were exposed to single or multiple exposures like smoking, betel nut, betel leaf, tobacco leaf, fertilizer or pesticides. Acute myeloblastic leukaemia (AML) was the leading HMS with 31.11% representation followed by non-Hodgkin's lymphoma (NHL) 20%, Hodgkin's lymphoma (HL) 15.56%, acute lymphoblastic leukaemia (ALL) 11.11%, chronic myeloid leukaemia (CML) 11.11%, multiple myeloma (MM)6.67% and chronic lymphocytic leukaemia (CLL) 4.44%. Duration of symptoms was vary from 2 days to 5 years. In acute leukaemia duration was short (average 2 months). Common clinical findings were anaemia (95.5%), fever (80.0%), hepatosplenomegaly (42.2%), lymphadenopathy (40.0%), bony tenderness (22.2%) and bleeding manifestations (15.5%). Some uncommon findings were also reported like menorrhagia, facial nerve palsy, arthritis and disorientation. Common laboratory abnormalities were high ESR, anaemia, leukocytosis, thrombocytopenia and immature cell in PBF especially in acute leukaemia. Clinical suspicion along with history of positive exposure indicates strong possibilities of haematological malignancies. It should be kept in mind that haematological malignancies may also present with some isolated uncommon findings.
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Affiliation(s)
- A S Islam
- Dr ASM Shafiqul Islam, Assistant Registrar, Infectious and Tropical Disease, Mymensingh Medical College Hospital (MMCH), Bangladesh; E-mail:
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Khan AU, Khan AU, Li B, Mahnashi MH, Alyami BA, Alqahtani YS, Alqarni AO, Khan ZUH, Ullah S, Wasim M, Khan QU, Ahmad W. Biosynthesis of silver capped magnesium oxide nanocomposite using Olea cuspidata leaf extract and their photocatalytic, antioxidant and antibacterial activity. Photodiagnosis Photodyn Ther 2020; 33:102153. [PMID: 33348075 DOI: 10.1016/j.pdpdt.2020.102153] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 10/22/2022]
Abstract
Green chemistry is a modern area of research which covers synthesis of nanomaterials through useful, environmentally, economically friendly techniques and their use in different fields. The synthesis involves the formation of bimetallic nanomaterials to enhance their synergistic relationship and achieve special modulated properties. That's why bimetallic nanomaterials are extremely important and gaining interest among researchers in the field of medicinal chemistry for the treatment of various diseases. In this particular study, bimetallic nanoparticles synthesis was done by reduction procedure using leaf extract of Olea cuspidata. The phytochemicals in leaf extract act as stabilizing and capping agent in reduction of precursor's salts. The characterization of green synthesized Ag@MgO nanocomposite was done through several analytical techniques such as ultraviolet-visible (UV-vis) spectroscopy, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Scanning electron microscope (SEM), High resolution transmission electron microscope (HRTEM) and Zeta potential. To explore the biological potential of synthesized nanocomposite, antibacterial activities against gram negative (Escherichia coli) bacteria and gram positive (Staphylococcus aureus) has been evaluated. The photocatalytic activity in contrary to methylene blue (MB) decomposition was seen efficiently. Moreover, the antioxidant nature of green synthesized Ag@MgO nanocomposite was analyzed by destabilizing and scavenging maximum percentage (93 %) of dangerous and harmful 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical. The best and surprising results provided the information for the presence of essential and vital components in Olea Cuspidata in the form of organic acids (Citrus Acid) aids in stabilizing the entire structure with enhanced properties. Up to the best of our knowledge, the facts and results obtained regarding the structure of Ag@MgO nanocomposite clearly illustrates the uniqueness of green chemistry and also its role in future developing multifunctional nanoparticles in the field of nanobiotechnology.
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Affiliation(s)
- Afaq Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Arif Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China; Beijing Advaced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China.
| | - Baoshan Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China.
| | - Mater H Mahnashi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Bandar A Alyami
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Yahya S Alqahtani
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Ali O Alqarni
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Zia Ul Haq Khan
- Department of Environmental Sciences, COMSATS University, Vehari, 61100 Pakistan
| | - Sami Ullah
- COMSATS University Islamabad, Abbottabad Campus, Pakistan
| | - Muhammad Wasim
- PGR Medicine Group b Dermatology Saidu Group of Teaching Hospital Swat, KPK, Pakistan
| | - Qudrat Ullah Khan
- College of Physics and Optoelectronics, Shenzhen University, Nanhai Ave, 3688, Shenzhen, Guangdong, 518060, PR China
| | - Waqas Ahmad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
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Khan ZUH, Khan A, Shah NS, Muhammad N, Khan AU, Iqbal J, Imran M, Ashfaq M, Kousar A, Chen Y, Pingyu W. Withdrawal Notice: Electro-Catalytic process for the Synthesis of Organic Compounds and their Biological Applications. Curr Org Synth 2020; 17:COS-EPUB-112385. [PMID: 33319662 DOI: 10.2174/1570179417999201211205249] [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: 06/25/2020] [Revised: 10/23/2020] [Accepted: 10/29/2020] [Indexed: 11/22/2022]
Abstract
The article for the journal Current Organic Synthesis has been removed by the Publisher due to acute language inconsistencies and grammatical errors. Bentham Science apologizes to the readers of the journal for any inconvenience this may cause. The Bentham Editorial Policy on Article Withdrawal can be found at https://benthamscience.com/editorial-policies-main.php Bentham Science Disclaimer It is a condition of publication that manuscripts submitted to this journal have not been published and will not be simultaneously submitted or published elsewhere. Furthermore, any data, illustration, structure or table that has been published elsewhere must be reported, and copyright permission for reproduction must be obtained. Plagiarism is strictly forbidden, and by submitting the article for publication the authors agree that the publishers have the legal right to take appropriate action against the authors, if plagiarism or fabricated information is discovered. By submitting a manuscript, the authors agree that the copyright of their article is transferred to the publishers if and when the article is accepted for publication.
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Affiliation(s)
- Zia Ul Haq Khan
- Department of Environmental Sciences, COMSATS University, Vehari 61100, Pakistan
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Amjad Khan
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Noor Samad Shah
- Department of Environmental Sciences, COMSATS University, Vehari 61100, Pakistan
| | - Nawshad Muhammad
- Department of dental material Science, Institute of Basic Medical Science Khyber Medical University KPK, Pakistan
| | - Arif Ullah Khan
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jibran Iqbal
- College of Natural and Health Sciences, Zayed University, P.O. Box 144534, Abu Dhabi, United Arab Emirates
| | - Muhammad Imran
- Department of Environmental Sciences, COMSATS University, Vehari 61100, Pakistan
| | - Munazza Ashfaq
- Department of Environmental Sciences, COMSATS University, Vehari 61100, Pakistan
| | - Amina Kousar
- Department of Environmental Sciences, COMSATS University, Vehari 61100, Pakistan
| | - Yongmei Chen
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Wan Pingyu
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, China
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15
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Khan AU, Rahman AU, Yuan Q, Ahmad A, Khan ZUH, Mahnashi MH, Alyami BA, Alqahtani YS, Ullah S, Wirman AP. Facile and eco-benign fabrication of Ag/Fe2O3 nanocomposite using Algaia Monozyga leaves extract and its’ efficient biocidal and photocatalytic applications. Photodiagnosis Photodyn Ther 2020; 32:101970. [DOI: 10.1016/j.pdpdt.2020.101970] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/07/2020] [Accepted: 08/14/2020] [Indexed: 02/07/2023]
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Khan FU, Khan ZUH, Ma J, Khan AU, Sohail M, Chen Y, Yang Y, Pan X. An Astragalus membranaceus based eco-friendly biomimetic synthesis approach of ZnO nanoflowers with an excellent antibacterial, antioxidant and electrochemical sensing effect. Mater Sci Eng C Mater Biol Appl 2020; 118:111432. [PMID: 33255026 DOI: 10.1016/j.msec.2020.111432] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/07/2020] [Accepted: 08/20/2020] [Indexed: 12/18/2022]
Abstract
Nowadays featuring outstanding eco-friendliness, the phytochemical fabrication method of nanostructures is very popular. Here, we propose to utilize the Astragalus membranaceus extract as the reducing and capping agent to stabilize the metal and to avoid the aggregations of nanoparticles during ZnO nanoflowers synthesis procedure. As a result, the whole fabrication procedure was highly efficient and cost-effective without requiring a special environment of high pressure or elevated temperature and without chemical hazards used or produced. After the fabrication, detailed characterization about material morphology and crystal structure was carried out, including scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscope (FTIR). Moreover, the ZnO nanoflowers demonstrated distinctive antibacterial, antioxidant and electrochemical sensing effect. Specifically, ZnO nanoflowers had an antibacterial inhibition zone of 19(±0.7) and 15(±0.8) mm in diameter against the concentration of 50 μL (1 mg/mL) Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), which is greatly improved compared to the reference drug (Kanamycin). Besides, antioxidant activity was also tested using H2O2 free radical scavenging assay and 60% 2,2-diphenyl-1-picrylhydrazyl (DPPH) inhibition of 0.5 mg/mL was reported. Finally, controlled by the diffusion process during the charge transfer procedure, 4-nitorphenol was dramatically reduced and a limit of detection of 0.08 μM by ZnO nanoflowers modified electrode was observed during the cyclic voltammetry (CV) experiment. Because the phenolic compounds originating from Astragalus membranaceus helped to facilitate the electron transfer, the limit of detection was lower compared to other materials, such as copper oxide nanoparticles (Cu2O-NPs), silicon dioxide/silver nanoparticles (SiO2/Ag-NPs), zinc oxide nanoparticles (ZnO-NPs), activated carbon (AC) and cobalt oxide nanocubes (Co3O4). Therefore, featuring easy operation, low-cost and eco-friendliness, our proposed ZnO nanoflowers fabrication method will have a great potential in biomedical and electro-catalytic fields.
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Affiliation(s)
- Faheem Ullah Khan
- College of Electronics and Information Engineering, Shenzhen University, Guangdong Province 518000, China
| | - Zia Ul Haq Khan
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus,61100, Pakistan
| | - Junxian Ma
- College of Electronics and Information Engineering, Shenzhen University, Guangdong Province 518000, China
| | - Arif Ullah Khan
- Beijing Advanced Innovation Center for Soft Matter Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Muhammad Sohail
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, PR China
| | - Yongmei Chen
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yatao Yang
- College of Electronics and Information Engineering, Shenzhen University, Guangdong Province 518000, China.
| | - Xiaofang Pan
- College of Electronics and Information Engineering, Shenzhen University, Guangdong Province 518000, China.
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Ahmad W, Khan AU, Shams S, Qin L, Yuan Q, Ahmad A, Wei Y, Khan ZUH, Ullah S, Rahman AU. Eco-benign approach to synthesize spherical iron oxide nanoparticles: A new insight in photocatalytic and biomedical applications. Journal of Photochemistry and Photobiology B: Biology 2020; 205:111821. [DOI: 10.1016/j.jphotobiol.2020.111821] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/13/2020] [Accepted: 02/16/2020] [Indexed: 01/19/2023]
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18
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Ali A, Shah FA, Zeb A, Malik I, Alvi AM, Alkury LT, Rashid S, Hussain I, Ullah N, Khan AU, Koh PO, Li S. NF-κB Inhibitors Attenuate MCAO Induced Neurodegeneration and Oxidative Stress-A Reprofiling Approach. Front Mol Neurosci 2020; 13:33. [PMID: 32292329 PMCID: PMC7121334 DOI: 10.3389/fnmol.2020.00033] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [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: 08/29/2019] [Accepted: 02/12/2020] [Indexed: 12/23/2022] Open
Abstract
Stroke is the leading cause of morbidity and mortality worldwide. About 87% of stroke cases are ischemic, which disrupt the physiological activity of the brain, thus leading to a series of complex pathophysiological events. Despite decades of research on neuroprotectants to probe for suitable therapies against ischemic stroke, no successful results have been obtained, and new alternative approaches are urgently required in order to combat this pathological torment. To address these problems, drug repositioning/reprofiling is explored extensively. Drug repurposing aims to identify new uses for already established drugs, and this makes it an attractive commercial strategy. Nuclear factor-kappa beta (NF-κB) is reported to be involved in many physiological and pathological conditions, such as neurodegeneration, neuroinflammation, and ischemia/reperfusion (I/R) injury. In this study, we examined the neuroprotective effects of atorvastatin, cephalexin, and mycophenolate against the NF-κB in ischemic stroke, as compared to the standard NF-κB inhibitor caeffic acid phenethyl ester (CAPE). An in-silico docking analysis was performed and their potential neuroprotective activities in the in vivo transient middle cerebral artery occlusion (t-MCAO) rat model was examined. The percent (%) infarct area and 28-point composite neuro score were examined, and an immunohistochemical analysis (IHC) and enzyme-linked immunosorbent assay (ELISA) were further performed to validate the neuroprotective role of these compounds in stroke as well as their potential as antioxidants. Our results demonstrated that these novels NF-κB inhibitors could attenuate ischemic stroke-induced neuronal toxicity by targeting NF-κB, a potential therapeutic approach in ischemic stroke.
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Affiliation(s)
- Awais Ali
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Fawad Ali Shah
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Alam Zeb
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Imran Malik
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Arooj Mohsin Alvi
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Lina Tariq Alkury
- College of Natural and Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates
| | - Sajid Rashid
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Ishtiaq Hussain
- Department of Pharmacy, Abbottabad University of Science and Technology, Khyber Pakhtunkhwa, Pakistan
| | - Najeeb Ullah
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Pakistan
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen, China
| | - Arif Ullah Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Phil Ok Koh
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - Shupeng Li
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen, China
- Centre for Addiction and Mental Health, Campbell Research Institute, Toronto, ON, Canada
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Ullah S, Yasin G, Ahmad A, Qin L, Yuan Q, Khan AU, Khan UA, Rahman AU, Slimani Y. Construction of well-designed 1D selenium–tellurium nanorods anchored on graphene sheets as a high storage capacity anode material for lithium-ion batteries. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01701a] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The graphical illustration of the preparation of the SeTe@rGO composite material and its electrochemical application in Li-ion batteries.
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Affiliation(s)
- Sadeeq Ullah
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Ghulam Yasin
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Aftab Ahmad
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Lei Qin
- Department of Biochemical Engineering/Institute for Biotransformation and Synthetic biosystem
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- 100081 Beijing
- PR China
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Arif Ullah Khan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Usman Ali Khan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Aziz Ur Rahman
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yassine Slimani
- Department of Physics Research
- Institute for Research and Medical Consultations
- Imam Abdulrahman Bin Faisal University
- Saudi Arabia
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20
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Aslam MN, Sohaib M, Khan AU, Ali S, Amjad A, Ahmed S. Lipids Oxidative Stability and Microbial Shelf Life Quality of Licorice (Glycyrrhiza glabra L.) Extract Supplemented Chicken Patties. Braz J Poult Sci 2020. [DOI: 10.1590/1806-9061-2020-1316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- MN Aslam
- University of Veterinary and Animal Sciences, Pakistan
| | - M Sohaib
- University of Veterinary and Animal Sciences, Pakistan
| | - AU Khan
- University of Veterinary and Animal Sciences, Pakistan
| | - S Ali
- University of Veterinary and Animal Sciences, Pakistan
| | - A Amjad
- Bahauddin Zakariya University, Pakistan
| | - S Ahmed
- Cholistan University of Veterinary and Animal Sciences, Pakistan
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Ahmad A, Ullah S, Ahmad W, Yuan Q, Taj R, Khan AU, Rahman AU, Khan UA. Zinc oxide‑selenium heterojunction composite: Synthesis, characterization and photo-induced antibacterial activity under visible light irradiation. J Photochem Photobiol B 2019; 203:111743. [PMID: 31864091 DOI: 10.1016/j.jphotobiol.2019.111743] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 12/11/2019] [Accepted: 12/12/2019] [Indexed: 01/17/2023]
Abstract
The designing of new antibacterial agents with high and long-lasting activities are urgently needed in order to cope with the fast-emerging bacterial resistance. Zinc oxide nanoparticles (ZnO) have shown a significant promise as broad-spectrum antibacterial agents, and are efficient material in compromising bacterial membrane stability that leads to an increased cell permeability to nano-products. However, further engineering is required to improve their biological activities and to minimize their toxicity to healthy cells. In an attempt to resolve this issue, two semiconductor materials, ZnO and selenium (Se), were fabricated into a unique structural composite by a newly developed facile green method, and the designed composite was applied as an antibacterial nanomedicine. The developed methodology involves the initial preparation of ZnO, followed by its fabrication with Se at different temperatures (70 °C to 95 °C). Our experimental data showed that well defined interpenetrated crystalline Se network on ZnO (ZnO-Se) can be obtained at 80 °C for 180 min. The as-prepared ZnO-Se showed promising results in inhibiting the challenged bacterial strains under light irradiation (visible light) as compared to free ZnO. The enhanced biocidal property of ZnO-Se could be ascribed to its improved light-harvesting ability for sustainable induction of reactive oxygen species (ROS) and an active contact killing mechanism. Thus, ZnO-Se composite with a novel architecture could be a promising material in the treatment of bacterial infections by a mutual antibacterial synergy from the incorporated elements. Interestingly, the ZnO-Se has the ability to scavenge the overproduction of hydroxyl radicals, thus protecting the healthy cells from oxidative damage.
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Affiliation(s)
- Aftab Ahmad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, No. 15 East Road of North Third Ring, Chao Yang District, Beijing 100029, China
| | - Sadeeq Ullah
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, No. 15 East Road of North Third Ring, Chao Yang District, Beijing 100029, China
| | - Waqas Ahmad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, No. 15 East Road of North Third Ring, Chao Yang District, Beijing 100029, China
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, No. 15 East Road of North Third Ring, Chao Yang District, Beijing 100029, China..
| | - Raheela Taj
- Institute of Chemical Sciences, University of Peshawar, KP, Pakistan
| | - Arif Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, No. 15 East Road of North Third Ring, Chao Yang District, Beijing 100029, China
| | - Aziz Ur Rahman
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, No. 15 East Road of North Third Ring, Chao Yang District, Beijing 100029, China
| | - Usman Ali Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, No. 15 East Road of North Third Ring, Chao Yang District, Beijing 100029, China
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Arshad A, Akram R, Iqbal S, Batool F, Iqbal B, Khalid B, Khan AU. Aqueous synthesis of tunable fluorescent, semiconductor CuInS2 quantum dots for bioimaging. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2016.10.002] [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: 10/20/2022] Open
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Ullah S, Ahmad A, Ri H, Khan AU, Khan UA, Yuan Q. Green synthesis of catalytic Zinc Oxide nano‐flowers and their bacterial infection therapy. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5298] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sadeeq Ullah
- State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical Technology No. 15 East Road of North Third Ring, Chao Yang District Beijing 100029 China
| | - Aftab Ahmad
- State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical Technology No. 15 East Road of North Third Ring, Chao Yang District Beijing 100029 China
| | - HyonIl Ri
- State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical Technology No. 15 East Road of North Third Ring, Chao Yang District Beijing 100029 China
- Department of Chemical ScienceKim Hyong Jik University of Education Pyongyang Democratic people's Republic of Korea
| | - Arif Ullah Khan
- State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical Technology No. 15 East Road of North Third Ring, Chao Yang District Beijing 100029 China
| | - Usman Ali Khan
- State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical Technology No. 15 East Road of North Third Ring, Chao Yang District Beijing 100029 China
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical Technology No. 15 East Road of North Third Ring, Chao Yang District Beijing 100029 China
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Ahmad A, Ullah S, Khan A, Ahmad W, Khan AU, Khan UA, Rahman AU, Yuan Q. Graphene oxide selenium nanorod composite as a stable electrode material for energy storage devices. Appl Nanosci 2019. [DOI: 10.1007/s13204-019-01204-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Shams S, Khan AU, Yuan Q, Ahmad W, Wei Y, Khan ZUH, Shams S, Ahmad A, Rahman AU, Ullah S. Facile and eco-benign synthesis of Au@Fe2O3 nanocomposite: Efficient photocatalytic, antibacterial and antioxidant agent. Journal of Photochemistry and Photobiology B: Biology 2019; 199:111632. [DOI: 10.1016/j.jphotobiol.2019.111632] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/17/2019] [Accepted: 09/12/2019] [Indexed: 10/26/2022]
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Shah FA, Kury LA, Li T, Zeb A, Koh PO, Liu F, Zhou Q, Hussain I, Khan AU, Jiang Y, Li S. Polydatin Attenuates Neuronal Loss via Reducing Neuroinflammation and Oxidative Stress in Rat MCAO Models. Front Pharmacol 2019; 10:663. [PMID: 31293416 PMCID: PMC6606791 DOI: 10.3389/fphar.2019.00663] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [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: 08/30/2018] [Accepted: 05/23/2019] [Indexed: 12/14/2022] Open
Abstract
Ischemic stroke is characterized by permanent or transient obstruction of blood flow, which initiates a cascading pathological process, starting from acute ATP loss and ionic imbalance to subsequent membrane depolarization, glutamate excitotoxicity, and calcium overload. These initial events are followed by neuroinflammation and oxidative stress, eventually causing neuronal neurosis and apoptosis. Complicated interplays exist between these steps happening across various stages, which not only represent the complicated nature of ischemic pathology but also warrant a detailed delineation of the underlying molecular mechanisms to develop better therapeutic options. In the present study, we examined the neuroprotective effects of polydatin against ischemic brain injury using a rat model of permanent middle cerebral artery occlusion (MCAO). Our results demonstrated that polydatin treatment reduced the infarction volume and mitigated the neurobehavioral deficits, sequentially rescued neuronal apoptosis. Ischemic stroke induced an elevation of neuroinflammation and reactive oxygen species, which could be attenuated by polydatin via the reduced activation of p38 mitogen-activated protein kinase and c-Jun N-terminal kinase. In addition, polydatin upregulated the endogenous antioxidant nuclear factor erythroid 2-related factor 2, heme oxygenase-1, the thioredoxin pathway, and eventually reversed ischemic-stroke-induced elevation of ROS and inflammation in ischemic cortical tissue. The diverse and broad actions of polydatin suggested that it could be a multiple targeting neuroprotective agent in ameliorating the detrimental effects of MCAO, such as neuroinflammation, oxidative stress, and neuronal apoptosis. As repetitive clinical trials of neuroprotectants targeting a single step of stroke pathological process have failed previously, our results suggested that a neuroprotective strategy of acting at different stages may be more advantageous to intervene in the vicious cycles in MCAO.
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Affiliation(s)
- Fawad Ali Shah
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China.,Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Lina Al Kury
- College of Natural and Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates
| | - Tao Li
- Department of Forensic Medicine, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Alam Zeb
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Phil Ok Koh
- Department of Anatomy, College of Veterinary Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
| | - Fang Liu
- Campbell Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Qiang Zhou
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China
| | | | - Arif Ullah Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Yuhua Jiang
- Cancer Centre, The Second Hospital of Shandong University, Jinan, China
| | - Shupeng Li
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China.,Campbell Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
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Khan AU, Hossain MA, Rahman MA, Rahman HW, Reza MA, Khan MK, Mahmud AA. Estimation of Vitamin D levels among Physicians Working in a Tertiary Level Hospital of Bangladesh. Mymensingh Med J 2019; 28:322-327. [PMID: 31086146] [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: 06/09/2023]
Abstract
Vitamin D is essential for the body to regulate calcium and phosphate levels and mineralization of bone. It is synthesized in the skin after ultraviolet radiation exposure or obtained in the diet to a less extent. Vitamin D deficiency is attracting attention due to higher prevalence in different populations. Physicians of Bangladesh are supposed to be vulnerable to low Vitamin D levels owing to long indoor work hours in both government and private settings. The study was conducted to evaluate Vitamin D status among physicians working in a tertiary level public hospital of Bangladesh. The cross sectional descriptive study was carried out at Mymensingh Medical College Hospital during the period of January 2018 to June 2018. Data were collected from purposively selected 102 doctors of different levels using a case record form. Interview, measurements and laboratory investigations were done accordingly. Vitamin D levels were categorized as deficient (<20.00ng/L), Insufficient (20.00-29.00ng/L), Sufficient (30.00-100.00ng/L) and Potential Toxicity (>100.00ng/L). Among 102 doctors 79(77.5%) were male and 23(22.5%) were female. Maximum (60.8%) were in the age group of 31 years to 50 years. Mean±SD age of the subjects was 49.9±3.61years. Vitamin D deficiency was found in 19(18.6%) subjects and insufficiency was in 49(48.0%) of the subjects. On the other hand 34(33.3%) subjects had sufficient Vitamin D levels. Potential Vitamin D toxicity was not found in any of the subjects. Vitamin D deficiency was found more in female (30.4%) than male (15.2%) but insufficiency was found more in male (50.6%) than female (39.1%). The study revealed that 66.6% physicians had either deficiency or insufficiency of Vitamin D. Exposure to sunlight, dietary intake and Vitamin D supplementation should be considered to increase the status of Vitamin D levels in Physicians of Bangladesh.
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Affiliation(s)
- A U Khan
- Dr Mohammed Amdad Ullah Khan, Assistant Professor, Department of Medicine, Mymensingh Medical College (MMC), Mymensingh, Bangladesh; E-mail:
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Rahman AU, Khan AU, Yuan Q, Wei Y, Ahmad A, Ullah S, Khan ZUH, Shams S, Tariq M, Ahmad W. Tuber extract of Arisaema flavum eco-benignly and effectively synthesize silver nanoparticles: Photocatalytic and antibacterial response against multidrug resistant engineered E. coli QH4. J Photochem Photobiol B 2019; 193:31-38. [PMID: 30802773 DOI: 10.1016/j.jphotobiol.2019.01.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/16/2019] [Accepted: 01/29/2019] [Indexed: 10/27/2022]
Abstract
Metal nanoparticles, synthesized using Phyto-constituents are the most economically and environmentally benign materials ever. Biogenic silver nanoparticles (AgNPs) from three fractions of Arisaema flavum tuber extract were synthesized and characterized by UV-visible spectroscopy, XRD (X-rays diffraction), FT-IR (Fourier transform infrared spectroscopy) TEM (transmission electron microscopy) and EDX (Energy dispersive Microscopy). XRD pattern show the face centred cubic crystalline (Fcc) structure of AgNPs. FTIR spectra confirmed the presence of different Polyphenolic compounds capping the AgNps. UV-visible spectroscopy result confirmed the presence of Ag because of the particular surface plasmon Resonance (SPR) in the area of 400-430 nm. The electron microscope studies revealed the formation of spherical AgNPs with diameter ranging from 12 nm to 20 nm. Strong signals of AgNPs were confirmed with EDX analysis. The antibacterial properties of the AgNPs prepared with various extracts were tested against multi-drug resistant bacteria. Which showed significant antibacterial activity against all the multidrug resistant bacterial strains and especially multidrug resistant engineered E.ColiQH4. AgNPs synthesized by methanolic, Ethyl Acetate and aqueous Extracts of Areseama Flavum exhibited significant Photocatalytic activity to reduce methylene blue. Small size, spherical shape and high dispersion are the key properties due to which the AgNPs are having significant biological and photocatalytic activity. To the best of our knowledge, it is the first report of biogenic AgNPs regarding antibacterial activity against multidrug resistant Engineered E.Coli QH4.
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Affiliation(s)
- Aziz Ur Rahman
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Arif Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China; Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China; Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Yun Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Aftab Ahmad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China; Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Sadeeq Ullah
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Zia Ul Haq Khan
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus 61100, Pakistan
| | - Saira Shams
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Muhammad Tariq
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Waqas Ahmad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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Idrees MA, Younus M, Farooqi SH, Khan AU. Retraction notice to "Blackleg in cattle: Current understanding and future research perspectives- A review" [Microbial Pathogenesis 120 (2018) 176-180]. Microb Pathog 2019; 126:407. [PMID: 30704615 DOI: 10.1016/j.micpath.2018.12.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M A Idrees
- Department of Pathobiology, KBCMA, College of Veterinary and Animal Sciences, 51600, Narowal, Pakistan
| | - M Younus
- Department of Pathobiology, KBCMA, College of Veterinary and Animal Sciences, 51600, Narowal, Pakistan
| | - S H Farooqi
- Department of Clinical Studies, KBCMA, College of Veterinary and Animal Sciences, 51600, Narowal, Pakistan
| | - A U Khan
- Department of Pathobiology, College of Veterinary and Animal Sciences, 35200, Jhang, Pakistan
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Sadiq MA, Khan AU, Saleem S, Nadeem S. Numerical simulation of oscillatory oblique stagnation point flow of a magneto micropolar nanofluid. RSC Adv 2019; 9:4751-4764. [PMID: 35514636 PMCID: PMC9060680 DOI: 10.1039/c8ra09698h] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 01/25/2019] [Indexed: 11/21/2022] Open
Abstract
The particular inquiry is made to envision the characteristics of magneto-hydrodynamic oscillatory oblique stagnation point flow of micropolar nanofluid. The applied magnetic field is assumed parallel towards isolating streamline. A relative investigation is executed for copper and alumina nanoparticles while seeing water type base fluid. To be more specific, in the presence of both weak and strong concentration, the physical situation of micropolar fluid is mathematically modeled in terms of differential equations. The transformed mixed system is finally elucidated by midpoint method with the Richardson extrapolation development and shooting mechanism with fifth order R–K Fehlberg technique. The impact of governing parameters are shown and explored graphically. The obtained results are compared with existing published literature. Moreover, it is found that the magnetic susceptibility of nanofluids shows provoking nature towards copper as compared to Alumina. Also it is perceived that Cu–water shows higher wall shear stress and heat transfer rate than Al2O3–water. Additional, the thickness of momentum boundary layer is thin for weak concentration as related to strong concentration. The particular inquiry is made to envision the characteristics of magneto-hydrodynamic oscillatory oblique stagnation point flow of micropolar nanofluid.![]()
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Affiliation(s)
| | - Arif Ullah Khan
- Department of Mathematics
- Quaid-i-Azam University
- Islamabad 44000
- Pakistan
- Department of Mathematics
| | - S. Saleem
- Department of Mathematics
- College of Sciences
- King Khalid University
- Abha 61413
- Saudi Arabia
| | - S. Nadeem
- Department of Mathematics
- Quaid-i-Azam University
- Islamabad 44000
- Pakistan
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Hayat T, Nadeem S, Khan AU. Rotating flow of Ag-CuO/H 2O hybrid nanofluid with radiation and partial slip boundary effects. Eur Phys J E Soft Matter 2018; 41:75. [PMID: 29926290 DOI: 10.1140/epje/i2018-11682-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 05/23/2018] [Indexed: 06/08/2023]
Abstract
The main object of the present paper is to examine and compare the improvement of flow and heat transfer characteristics between a rotating nanofluid and a newly discovered hybrid nanofluid in the presence of velocity slip and thermal slip. The influence of thermal radiation is also included in the present study. The system after applying the similarity transformations is solved numerically by using the bvp-4c scheme. Additionally, numerical calculations for the coefficient of skin friction and local Nusselt number are introduced and perused for germane parameters. The comparison between water, nanofluid and hybrid nanofluid on velocity and temperature is also visualized. It is observed that the velocity and temperature distributions are decreasing functions of the slip parameter. Temperature is boosted by thermal radiation and rotation. It is found that the heat transfer rate of the hybrid nanofluid is higher as compared to the traditional nanofluid.
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Affiliation(s)
- Tanzila Hayat
- Department of Mathematics, Quaid-i-Azam University, 44000, Islamabad, Pakistan
| | - S Nadeem
- Department of Mathematics, Quaid-i-Azam University, 44000, Islamabad, Pakistan
| | - A U Khan
- Department of Mathematics, Quaid-i-Azam University, 44000, Islamabad, Pakistan.
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Ullah S, Ahmad A, Subhan F, Jan A, Raza M, Khan AU, Rahman AU, Khan UA, Tariq M, Yuan Q. Tobramycin mediated silver nanospheres/graphene oxide composite for synergistic therapy of bacterial infection. Journal of Photochemistry and Photobiology B: Biology 2018; 183:342-348. [DOI: 10.1016/j.jphotobiol.2018.05.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/02/2018] [Accepted: 05/05/2018] [Indexed: 01/26/2023]
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Khan AU, Yuan Q, Khan ZUH, Ahmad A, Khan FU, Tahir K, Shakeel M, Ullah S. An eco-benign synthesis of AgNPs using aqueous extract of Longan fruit peel: Antiproliferative response against human breast cancer cell line MCF-7, antioxidant and photocatalytic deprivation of methylene blue. Journal of Photochemistry and Photobiology B: Biology 2018; 183:367-373. [DOI: 10.1016/j.jphotobiol.2018.05.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 05/02/2018] [Accepted: 05/05/2018] [Indexed: 01/17/2023]
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Idrees MA, Younus M, Farooqi SH, Khan AU. Blackleg in cattle: Current understanding and future research perspectives- A review. Microb Pathog 2018; 120:176-180. [PMID: 29733903 DOI: 10.1016/j.micpath.2018.04.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 11/29/2022]
Abstract
Blackleg is an endogenous acute infection that principally affects cattle. The disease is caused by Clostridium chauvoei (C. chauvoei), an anaerobic spore forming bacterium. Control of this disease is based on stringent husbandry measures and scheduled vaccination plan. In recent years, the major virulence factors of C. chauvoei have been discovered and described. However, the pathogenesis of blackleg in cattle and in particular, circulation of the pathogen from point of entry to target tissues is yet not fully elucidated. This review summarizes the latest review of literature that significantly contributed for understanding the disease in cattle, and provides a foundation to preventive strategies.
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Affiliation(s)
- M A Idrees
- Department of Pathobiology, KBCMA, College of Veterinary and Animal Sciences, 51600, Narowal, Pakistan
| | - M Younus
- Department of Clinical Studies, KBCMA, College of Veterinary and Animal Sciences, 51600, Narowal, Pakistan
| | - S H Farooqi
- Department of Clinical Studies, KBCMA, College of Veterinary and Animal Sciences, 51600, Narowal, Pakistan.
| | - A U Khan
- Department of Pathobiology, College of Veterinary and Animal Sciences, 35200, Jhang, Pakistan
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Shakeel M, Arif M, Yasin G, Li B, Khan AU, Khan FU, Baloch MK. Hollow mesoporous architecture: A high performance Bi-functional photoelectrocatalyst for overall water splitting. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.02.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Rouf MA, Khan M, Sharif JU, Karim MR, Rahman MM, Ahmed H, Pandit H, Khan AU, Rahman MA, Talukder RK, Parveen R, Akhter H. Prevalence of GERD in Type II Diabetes Mellitus Patients Admitted in A Tertiary Care Hospital of Bangladesh. Mymensingh Med J 2017; 26:710-715. [PMID: 29208856] [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: 06/07/2023]
Abstract
Gastroesophageal reflux disease (GERD) is defined as symptoms or complications associated with regurgitation from the stomach and/or the duodenum to the esophagus. Patients with type II diabetes mellitus (DM) were known to have higher prevalence of GERD in the Western countries, but data on the impact of GERD on DM patients in our country are scarce. The aim of this cross-sectional study was to evaluate the presence of GERD in type II DM patients admitted at the Department of Medicine, Mymensingh Medical College Hospital, Mymensingh, Bangladesh from April 2015 to September 2015. A total of 137 type II DM cases were purposively collected. Reflux Disease Questionnaire (RDQ) was used to check the presence of GERD. Patient's characteristics, laboratory data, face-to-face interview data were analyzed. Out of 137 type 2 DM patients 108 were suffering from GERD giving a prevalence rate of 78.8% which is quite high. Pathophysiological factors like age, sex, duration of DM, weight, waist circumference (WC) had no significant difference between GERD-DM and non-GERD-type II DM patients. Only hypertension and frequent eating fatty food were found to have significant differences between the two groups. From the study findings it could be said that the higher rate of GERD in patients with type II DM may be associated with lifestyle factor and some pathophysiological factors like hypertension. Psychiatric factors may also play role in contributing GERD. Further in-depth and large scale studies are necessary in our country in this regard.
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Affiliation(s)
- M A Rouf
- Dr Mohammad Abdur Rouf, Assistant Professor, Department of Medicine, Mymensingh Medical College (MMC), Mymensingh, Bangladesh
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Khan ZUH, Khan A, Chen Y, Shah NS, Muhammad N, Khan AU, Tahir K, Khan FU, Murtaza B, Hassan SU, Qaisrani SA, Wan P. Biomedical applications of green synthesized Nobel metal nanoparticles. Journal of Photochemistry and Photobiology B: Biology 2017; 173:150-164. [DOI: 10.1016/j.jphotobiol.2017.05.034] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 05/23/2017] [Accepted: 05/23/2017] [Indexed: 11/26/2022]
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Islam MS, Uddin MZ, Ali MS, Islam MN, Rahman MH, Robi IH, Haque MM, Rahman MW, Uddin MA, Ahamed F, Malek MS, Kabir MA, Rahman MS, Khan AU, Doel FA. Modified Blatchford Score for Risk Stratification in Adult Patient with Nonvariceal Upper Gastrointestinal Haemorrhage and Their Short Term Hospital Outcome. Mymensingh Med J 2017; 26:490-497. [PMID: 28919600] [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: 06/07/2023]
Abstract
Upper gastrointestinal hemorrhage (UGIH) is one of the most common and life-threatening gastrointestinal emergency. There are several risk scores for risk stratification in UGIB patients. The Modified Blatchford score, which relies only on clinical and laboratory parameters, is practical in the emergency setting The Modified Blatchford scoring system also known as Glasgow Blatchford Scoring (GBS) have been developed to stratify risk of non variceal upper gastrointestinal hemorrhage or need of medical or surgical intervention, endoscopic therapy. Objective of this study is to see risk stratification by The Modified Blatchford score and short term hospital outcome in non variceal upper GI hemorrhage patients. The observational study was carried out over a period of 6 months from October, 2014 to March, 2015 in Department of Department of Medicine, Gastroenterology and Surgery Mymensingh Medical College Hospital, Mymensingh. A total of 120 patients with non variceal UGIH were taken for the study during study period. Categorical variables were reported as percentage and Means and proportions were carried out using the Chi-square test (X2-test) of different variables by SPSS software version-18.0. Patients related variables age, sex; and main outcome variables the Modified Blatchford scoring system, Risk stratification, and short term hospital outcome were observed. Age frequency among total cases were 66(55%) <60 years, 50(41.67%) from 60-79 years and 4(3.3%) 80 years or above and sex distribution were 84(70%) were male and 36(30%) were female patients. Blatchford score of patients 1(0.83%) had score 0, 1(0.83%) had score 1, 2(1.67%) had score 2, 2(1.67%) had score 3, 2(1.67%) had score 4, 3(2.5%) had score 5, 12(10%) had score 6; 15(12.5%) had score 7, 16(13.33%) had score 8, 17(14.17%) had score 9, 16(13.33%) had score 10, 15(12.5%) had score 11, 10(8.33%) had score 12, 4(3.33% ) had score 13, 1(0.83%) had score 14, 2(1.67%) had score 15 and 1(0.83%) had score 16. Risk stratification showed 54(45%) had low risk (Mean GBS score 6.19±1.79), 66(55%) had high risk (Mean GBS score 11.03±1.83) Outcome of the patients were observed that 1(0.83%) died, 54(45%) was discharged without any medical or surgical intervention, and 65(54.17%) patients' needs medical or surgical intervention such as blood transfusion and endoscopy. Among total 120 patients with upper GI hemorrhage I have found that GBS score of three or less than three is predictive of low risk of adverse outcomes and can be discharged without any intervention.
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Affiliation(s)
- M S Islam
- Dr Md Saiful Islam, Medical Officer (Gastroenterology), Mymensingh Medical College Hospital (MMCH), Mymensingh
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Khan FU, Chen Y, Khan NU, Ahmad A, Tahir K, Khan ZU, Khan AU, Khan SU, Raza M, Wan P. Visible light inactivation of E. coli , Cytotoxicity and ROS determination of biochemically capped gold nanoparticles. Microb Pathog 2017; 107:419-424. [DOI: 10.1016/j.micpath.2017.04.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/14/2017] [Accepted: 04/19/2017] [Indexed: 12/23/2022]
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Khan ZUH, Khan A, Wan P, Khan AU, Tahir K, Muhammad N, Khan FU, Shah HU, Khan ZU. New natural product -an efficient antimicrobial applications of new newly synthesized pyrimidine derivatives by the electrochemical oxidation of hydroxyl phenol in the presence of 2-mercapto-6-(trifluoromethyl) pyrimidine-4-ol as nucleophile. Nat Prod Res 2017; 32:1161-1169. [PMID: 28494613 DOI: 10.1080/14786419.2017.1326043] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Some new pyrimidine derivatives have been synthesised by electrochemical oxidation of catechol (1a) in the existence of 2-mercapto-6-(trifluoromethyl) pyrimidine-4-ol (3) as a nucleophile in aqueous solution using Cyclic Voltammetric and Controlled Potential Coulometry. The catechol has been oxidised to o-quinone through electrochemical method and participative in Michael addition reaction, leading to the development of some new pyrimidine derivatives. The products were achieved in good yield with high pureness. The mechanism of the reaction has been conformed from the Cyclic Voltammetric data and Controlled Potential Coulometry. After purification, the compounds were characterised using modern techniques. The synthesised materials were screened for antimicrobial actions using Gram positive and Gram negative strain of bacteria. These new synthesised pyrimidine derivatives showed very good antimicrobial activity.
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Affiliation(s)
- Zia Ul Haq Khan
- a Department of Environmental Sciences , COMSATS Institute of Information Technology , Vehari , Pakistan.,b National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis , Institute of Applied Electrochemistry, Beijing University of Chemical Technology , Beijing , China
| | - Amjad Khan
- c The research Center for Medical Genomics , College of Basic Medical Science China Medical University , Shenyang , China
| | - Pingyu Wan
- b National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis , Institute of Applied Electrochemistry, Beijing University of Chemical Technology , Beijing , China
| | - Arif Ullah Khan
- b National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis , Institute of Applied Electrochemistry, Beijing University of Chemical Technology , Beijing , China
| | - Kamran Tahir
- d Institute of Chemistry Gomal University DIK Pakistan , DIK Pakistan , Pakistan
| | - Nawshad Muhammad
- e Interdisciplinary Research Centre in Biomedical Materials , COMSATS Institute of Information Technology , Lahore , Pakistan
| | - Faheem Ullah Khan
- b National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis , Institute of Applied Electrochemistry, Beijing University of Chemical Technology , Beijing , China
| | - Hidayat Ullah Shah
- f Department of Physics, School of Mathematics and Physics , University of Science and Technology Beijing , Beijing , China
| | - Zia Ullah Khan
- g Department of Agriculture , Abdul Wali Khan University , Mardan , Pakistan
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Tahir K, Nazir S, Ahmad A, Li B, Khan AU, Khan ZUH, Khan FU, Khan QU, Khan A, Rahman AU. Facile and green synthesis of phytochemicals capped platinum nanoparticles and in vitro their superior antibacterial activity. Journal of Photochemistry and Photobiology B: Biology 2017; 166:246-251. [DOI: 10.1016/j.jphotobiol.2016.12.016] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/05/2016] [Accepted: 12/10/2016] [Indexed: 11/25/2022]
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Tahir K, Nazir S, Li B, Ahmad A, Nasir T, Khan AU, Shah SAA, Khan ZUH, Yasin G, Hameed MU. Sapium sebiferum leaf extract mediated synthesis of palladium nanoparticles and in vitro investigation of their bacterial and photocatalytic activities. J Photochem Photobiol B 2016; 164:164-173. [PMID: 27689741 DOI: 10.1016/j.jphotobiol.2016.09.030] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 09/22/2016] [Indexed: 11/30/2022]
Abstract
There is a growing need to introduce eco-friendly and sustainable procedures for the synthesis of metal nanoparticles that include a mild reaction conditions, simple reaction setup, use of nontoxic medium such as water and plant extract, cost effectiveness as well as greater efficiency for biomedical and catalytic applications. For this purpose, small and highly dispersed palladium nanoparticles (PdNPs) were prepared by eco-friendly and cost effective green method using water soluble leaf extract of Sapium sebiferum as a reducing and capping agent. The formation of PdNPs was optimized at various temperatures i.e. (30°C, 60°C and 90°C) and different leaves extract (5mL and 10mL) in order to control their size and shape. The results indicated that PdNPs synthesized at 10mL leaf extract concentration and 60°C temperature have small sized (5nm) and spherical shape. The nanoparticles formation, their dispersion, size and shape were confirmed by various characterization techniques i.e. UV-Vis spectroscopy, Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), thermo gravimetric analysis (TGA) and Dynamic light scattering technique (DLS) analysis. The biologically synthesized PdNPs were tested for size dependent photo degradation of methylene blue and inactivation of bacteria. The PdNPs synthesized at optimized condition (10mL extract concentration and 60°C) have strong photo catalytic activity and reduced 90% methylene blue in 70min. The optimized PdNPs also showed strong bacterial inhibition against Staphylococcus aureus 29(±0.8mm), Bacillus subtilis 19(±0.6mm) and pseudomonas aeruginosa 11(±0.6mm). The results of this examination demonstrate effective applications of extremely active PdNPs.
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Affiliation(s)
- Kamran Tahir
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China; Institute of Chemical Sciences, Gomal University, D. I. Khan, KP, Pakistan
| | - Sadia Nazir
- Institute of Chemical Sciences, Gomal University, D. I. Khan, KP, Pakistan
| | - Baoshan Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Aftab Ahmad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Tabassum Nasir
- Department of Physics, Gomal University, D. I. Khan, KP, Pakistan
| | - Arif Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Sayyed Asim Ali Shah
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Zia Ul Haq Khan
- Department of Chemistry, University of Science and Technology, Bannu 28100, KP, Pakistan
| | - Ghulam Yasin
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Muhammad Usman Hameed
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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Khan AU, Brož P, Premović M, Pavlů J, Vřeštál J, Yan X, Maccio D, Saccone A, Giester G, Rogl P. The Ti-Mn system revisited: experimental investigation and thermodynamic modelling. Phys Chem Chem Phys 2016; 18:23326-39. [PMID: 27498605 DOI: 10.1039/c6cp04542a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As the Ti-Mn phase diagram is part of numerous ternary and higher order systems of technological importance, the present paper defines phase relations which have been experimentally established throughout this work from 800 °C to the melting range based on Differential Thermal Analyses (DTA), X-ray powder diffraction, metallography and Electron Probe Micro Analysis (EPMA) techniques on ∼50 alloys, which were prepared by arc melting or high frequency melting under high purity argon starting from freshly cleaned metal ingots. Novel compounds were identified and reaction isotherms were redefined accordingly. In the Ti-rich region a novel compound TiMn was detected, sandwiched between the known phases: TiMn1-x (∼45 at% Mn) and TiMn1+x (∼55 at% Mn). In the Mn-rich region the hitherto unknown crystal structure of TiMn∼3 was solved from X-ray single crystal diffraction data and found to be of a unique structure type Ti6(Ti1-xMnx)6Mn25 (x = 0.462; space group Pbam (#55); a = 0.79081(3) nm, b = 2.58557(9) nm, c = 0.47931(2) nm), which consists of two consecutive layers of the hexagonal MgZn2-type Laves phase (TiMn2) and a combined layer of alternate structure blocks of MgZn2 type and Zr4Al3 type. Whereas TiMn can be considered as a line compound (solubility range <∼1 at%), the homogeneity regions of the Ti-Mn compounds are significant (determined by EPMA): TiMn1-x (44.0 to 46.6 at% Mn), TiMn1+x (54.6 to 56.3 at% Mn), Ti1+xMn2-x (MgZn2-type, 59 to 69 at% Mn at 1000 °C: -0.08 < x < 0.23), TiMn∼3 (unique type; 74 to 76.5 at% Mn) and TiMn∼4 (R-phase: Ti8(TixMn1-x)6Mn39, 80 to 84 at% Ti). Supported by ab initio calculations of the ground state energy for the Laves phase, the new experimental results enabled thermodynamic modelling of the entire Ti-Mn phase diagram providing a complete and novel set of thermodynamic data thus providing a sound basis for future thermodynamic predictions of higher order Ti-Mn-X-Y systems.
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Affiliation(s)
- A U Khan
- Institute of Materials Chemistry and Research, University of Vienna, Währingerstraße 42, A-1090 Vienna, Austria.
| | - P Brož
- Masaryk University, Faculty of Science, Department of Chemistry, Kotlářská 2, 611 37, Brno, Czech Republic and Masaryk University, Central European Institute of Technology, CEITEC, Kamenice 753/5, 62500, Brno, Czech Republic
| | - M Premović
- Masaryk University, Faculty of Science, Department of Chemistry, Kotlářská 2, 611 37, Brno, Czech Republic
| | - J Pavlů
- Masaryk University, Faculty of Science, Department of Chemistry, Kotlářská 2, 611 37, Brno, Czech Republic and Masaryk University, Central European Institute of Technology, CEITEC, Kamenice 753/5, 62500, Brno, Czech Republic
| | - J Vřeštál
- Masaryk University, Faculty of Science, Department of Chemistry, Kotlářská 2, 611 37, Brno, Czech Republic and Masaryk University, Central European Institute of Technology, CEITEC, Kamenice 753/5, 62500, Brno, Czech Republic
| | - X Yan
- Institute of Materials Chemistry and Research, University of Vienna, Währingerstraße 42, A-1090 Vienna, Austria.
| | - D Maccio
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Sezione di Chimica Inorganica e Metallurgica, Via Dodecaneso 31, I-16146 Genova, Italy
| | - A Saccone
- Dipartimento di Chimica e Chimica Industriale, Università di Genova, Sezione di Chimica Inorganica e Metallurgica, Via Dodecaneso 31, I-16146 Genova, Italy
| | - G Giester
- Institute of Mineralogy and Crystallography, University of Vienna, Althanstraße 14, A-1090 Vienna, Austria
| | - P Rogl
- Institute of Materials Chemistry and Research, University of Vienna, Währingerstraße 42, A-1090 Vienna, Austria. and Christian Doppler Laboratory for Thermoelectricity, Vienna, Austria
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Khan ZUH, Khan A, Shah A, Wan P, Chen Y, Khan GM, Khan AU, Tahir K, Muhammad N, Khan HU. Enhanced photocatalytic and electrocatalytic applications of green synthesized silver nanoparticles. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.04.082] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tahir K, Ahmad A, Li B, Nazir S, Khan AU, Nasir T, Khan ZUH, Naz R, Raza M. Visible light photo catalytic inactivation of bacteria and photo degradation of methylene blue with Ag/TiO2 nanocomposite prepared by a novel method. J Photochem Photobiol B 2016; 162:189-198. [PMID: 27376463 DOI: 10.1016/j.jphotobiol.2016.06.039] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 05/09/2016] [Accepted: 06/22/2016] [Indexed: 10/21/2022]
Abstract
Water purification is one of the worldwide problem and most of the conventional methods are associated with a number of drawbacks. Therefore it is the need of the day to develop new methods and materials to overcome the problem of water purification. In this research work we present a simple and green approach to synthesize silver decorated titanium dioxide (Ag/TiO2) nanocomposite with an efficient photo catalytic activities. Phytochemicals of the Cestrum nocturnum leaf extract were used to synthesize silver nanoparticles (AgNPs), Titanium dioxide (TiO2) and Ag/TiO2 nanocomposite. To confirm the formation, crystal structure, particle size and shape of green synthesized nanoparticles and nanocomposite, they were characterized by UV-visible spectroscopy (UV-vis), X-ray diffraction spectroscopy (XRD), high resolution transmission electron microscopy (HRTEM), Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The AgNPs, TiO2 and Ag/TiO2 were evaluated for photo degradation of methylene blue (MB) and photo inhibition of Bacteria. The bio-synthesized Ag/TiO2 nanocomposite was observed to have strong catalytic activities for photo reduction of MB and photo inactivation of bacteria as compared to bare AgNPs and TiO2. In the presence of Ag/TiO2, 90% of MB was degraded only in 40min of irradiation. Alternatively the bare AgNPs and TiO2 degraded less than 30% and 80% respectively of MB even in more than 100min of irradiation. Similarly the Ag/TiO2 has very strong photo inhibition efficiency towards Escherichia coli and Pseudomonas aeruginosa. The zone of inhibition of irradiated Ag/TiO2 nanocomposites against E. coli and P. aeruginosa was 19mm and 17mm respectively which was two times higher than in dark. These promising photocatalytic activities of nanocomposite may be due to the highly decorated AgNPs over the surface of TiO2.
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Affiliation(s)
- Kamran Tahir
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China; Institute of Chemical Sciences, Gomal University D.I.Khan, KP, Pakistan
| | - Aftab Ahmad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Baoshan Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Sadia Nazir
- Institute of Chemical Sciences, Gomal University D.I.Khan, KP, Pakistan
| | - Arif Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Tabassum Nasir
- Department of Physics, Gomal University D.I.Khan, KP, Pakistan
| | - Zia Ul Haq Khan
- Department of Chemistry, University of Science and Technology Bannu, 28100, KP, Pakistan
| | - Rubina Naz
- Institute of Chemical Sciences, Gomal University D.I.Khan, KP, Pakistan
| | - Muslim Raza
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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Khan AU, Wei Y, Ahmad A, Haq Khan ZU, Tahir K, Khan SU, Muhammad N, Khan FU, Yuan Q. Enzymatic browning reduction in white cabbage, potent antibacterial and antioxidant activities of biogenic silver nanoparticles. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2015.12.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Khan AU, Wei Y, Haq Khan ZU, Tahir K, Ahmad A, Khan SU, Khan FU, Khan QU, Yuan Q. Visible light-induced photodegradation of methylene blue and reduction of 4-nitrophenol to 4-aminophenol over bio-synthesized silver nanoparticles. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1140203] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Hayashida Y, Umehira Y, Takatani K, Futami S, Kameda S, Kamata T, Khan AU, Takeuchi Y, Imai M, Yagi T. Cortical neural excitations in rats in vivo with using a prototype of a wireless multi-channel microstimulation system. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2015:1642-5. [PMID: 26736590 DOI: 10.1109/embc.2015.7318690] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Understanding neural responses to multi-site electrical stimuli would be of essential importance for developing cortical neural prostheses. In order to provide a tool for such studies in experimental animals, we recently constructed a prototype of a wireless multi-channel microstimulation system, consisting of a stimulator chip, wireless data/power transmitters and receivers, and microcomputers. The proper operations of the system in cortical neural excitations were examined in anesthetized rats in vivo, with utilizing the voltage-sensitive dye imaging technique.
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Khan AU, Yuan Q, Wei Y, Khan SU, Tahir K, Khan ZUH, Ahmad A, Ali F, Ali S, Nazir S. Longan fruit juice mediated synthesis of uniformly dispersed spherical AuNPs: cytotoxicity against human breast cancer cell line MCF-7, antioxidant and fluorescent properties. RSC Adv 2016. [DOI: 10.1039/c5ra27100b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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
In the present work AuNPs were synthesized by an eco-friendly, fast, one-pot and green synthetic route using Longan fruit juice as a reducing, capping and stabilizing agent.
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Affiliation(s)
- Arif Ullah Khan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing
- PR China
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing
- PR China
| | - Yun Wei
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing
- PR China
| | | | - Kamran Tahir
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing
- PR China
| | - Zia Ul Haq Khan
- Department of Chemistry
- University of Science and Technology Bannu
- Pakistan
| | - Aftab Ahmad
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing
- PR China
| | - Farman Ali
- Department of Chemistry
- Shaheed Benazir Bhutto University
- Dir 18000
- Pakistan
| | - Shafqat Ali
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing
- PR China
| | - Sadia Nazir
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing
- PR China
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Tahir K, Nazir S, Ahmad A, Li B, Ali Shah SA, Khan AU, Khan GM, Khan QU, Haq Khan ZU, Khan FU. Biodirected synthesis of palladium nanoparticles using Phoenix dactylifera leaves extract and their size dependent biomedical and catalytic applications. RSC Adv 2016. [DOI: 10.1039/c6ra11409a] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Graphical representation of green synthesis of PdNPs and their biological and catalytic applications.
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