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Azhar S, Rashid L, Islam T, Akhtar S, Hopkins KL, Sommers T, Ikram A, Anwer N, Maqbool NA, Khan Z, Ahmed N, Akhtar H. Knowledge, attitudes, and practices of vaccinators about expanded programs on immunization: a cross-sectional study. Front Public Health 2024; 12:1366378. [PMID: 38510352 PMCID: PMC10953913 DOI: 10.3389/fpubh.2024.1366378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 02/16/2024] [Indexed: 03/22/2024] Open
Abstract
Introduction The periodic evaluation of knowledge, attitudes, and practices (KAP) of healthcare workers, including vaccinators, concerning expanded programs on immunization (EPI) is very crucial for a better healthcare system. This study was carried out to assess the KAP of vaccinators about the EPI, including cold storage of vaccines and their practices related to vaccine cold chain management. Method A cross-sectional study was conducted from January 2022 to June 2022 among registered vaccinators in the twin cities (Islamabad and Rawalpindi) of Pakistan. A structured self-administered questionnaire (English and Urdu) was developed as per the Pakistan national EPI policy and strategic guidelines 2022 and World Health Organization (WHO) guidelines, as well as from earlier studies (Cronbach's alpha value of 0.734). The final questionnaire consisted of closed-ended questions in four sections, including sociodemographic information, knowledge (with dichotomous variables of yes/no), attitudes (with a 5-point Likert scale ranging from strongly agree to strongly disagree), and handling of vaccines and cold chain management. Completed questionnaires were entered into Microsoft Excel and then imported into SPSS version 25 for statistical analysis. Results A total of 186 vaccinators completely filled out their questionnaires, with a 97.9% response rate. More than half of the participants (57.5%) had no training related to EPI. Most of the respondents had a moderate to poor level of knowledge regarding EPI. The overall attitude was positive, and 57% of the participants strongly agreed that the national immunization programs can significantly contribute to the decrease in morbidity and mortality rates among children. In the current study, participants showed good practices toward EPI, vaccine storage, and cold chain management. The majority (93.5%) of the participants checked the expiry of vaccines at regular intervals to maintain the first expiry first out (FEFO) in their healthcare setting. Discussion In conclusion, most of the vaccinators had moderate to poor knowledge, a positive attitude, and good practices toward EPI, vaccine cold storage, and cold chain management. Lack of training among vaccinators on EPI was also observed. These findings have suggested that continuous training, education, and regular supervision of vaccinators in EPI are important for maximum immunization effectiveness and coverage.
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Affiliation(s)
- Sunia Azhar
- Yusra Institute of Pharmaceutical Sciences, Islamabad, Pakistan
| | - Laiba Rashid
- Yusra Institute of Pharmaceutical Sciences, Islamabad, Pakistan
| | - Taskeen Islam
- Communication and Media Studies, Fatima Jinnah Women University, Rawalpindi, Pakistan
| | - Samar Akhtar
- Yusra Institute of Pharmaceutical Sciences, Yusra Medical and Dental College, Zaraj Housing Society, Islamabad, Pakistan
| | | | | | - Aamer Ikram
- Armed Forces Institute of Pathology, Rawalpindi, Pakistan
| | - Naveed Anwer
- Department of Pharmacy, Quaid.i.Azam University, Islamabad, Pakistan
| | - Nabeel Ahmed Maqbool
- Vaccines Preventable Infectious Diseases, Chemonics International Global Health Supply Chain – Procurement and Supply, Management (GHSC-PSM) Project, Islamabad, Pakistan
| | - Zakir Khan
- Department of Pharmacy Practice, Riphah Institute of Pharmaceutical Sciences (RIPS), Riphah International University Gulberg Green Campus, Islamabad, Pakistan
| | - Naveed Ahmed
- Department of Pharmacy, Quaid.i.Azam University, Islamabad, Pakistan
| | - Hashaam Akhtar
- Yusra Institute of Pharmaceutical Sciences, Islamabad, Pakistan
- Department of Global Health, Health Services Academy, Chak Shahzad, Islamabad, Pakistan
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Azhar S, Jha G, Mlawa G, Muhammad S. P27.07 Pancoast Tumour Presenting as Lower Limb Weakness; Would You Recognise It? J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Chaudhary A, Akram AM, Ahmad QUA, Hussain Z, Zahra S, Minahal Q, Azhar S, Ahmad S, Hayat S, Javed MA, Haider MS, Ali Q, Karita S. Optimized biotransformation of acid-treated water melon peel hydrolyzate into ethanol. BRAZ J BIOL 2021; 83:e253009. [PMID: 34495170 DOI: 10.1590/1519-6984.253009] [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: 06/07/2021] [Accepted: 07/08/2021] [Indexed: 11/22/2022] Open
Abstract
Today, global focus of research is to explore the solution of energy crisis and environmental pollution. Like other agricultural countries, bulk quantities of watermelon peels (WMP) are disposed-off in environment as waste in Pakistan and appropriate management of this waste is the need of hour to save environment from pollution. The work emphasizes the role of ethanologenic yeasts to utilize significant sugars present in WMP for low-cost bioethanol fermentation. Dilute hydrochloric acid hydrolysis of WMP was carried out on optimized conditions employing RSM (response surface methodology) following central composite design (CCD). This experimental design is based on optimization of ethanologenesis involving some key independent parameters such as WMP hydrolysate and synthetic media ratio (X1), incubation temperature (X2) and incubation temperature (X3) for maximal ethanol yield exploiting standard (Saccharomyces cerevisiae K7) as well as experimental (Metchnikowia cibodasensisY34) yeasts. The results revealed that maximal ethanol yields obtained from S. cerevisiae K7 was 0.36±0.02 g/g of reducing sugars whereas M. cibodasensisY34, yielded 0.40±0.01 g ethanol/g of reducing sugars. The yeast isolate M. cibodasensisY34 appeared as promising ethanologen and embodies prospective potential for fermentative valorization of WMP-to-bioethanol.
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Affiliation(s)
- A Chaudhary
- University of Education, Department of Zoology, Division of Science and Technology, Lahore, Pakistan
| | - A M Akram
- University of Education, Department of Zoology, Division of Science and Technology, Lahore, Pakistan
| | - Qurat-Ul-Ain Ahmad
- University of Education, Department of Zoology, Division of Science and Technology, Lahore, Pakistan
| | - Z Hussain
- University of Education, Department of Zoology, Division of Science and Technology, Lahore, Pakistan
| | - S Zahra
- University of Education, Department of Physics, Division of Science and Technology, Lahore, Pakistan
| | - Q Minahal
- University of Education, Department of Zoology, Division of Science and Technology, Lahore, Pakistan
| | - S Azhar
- University of the Punjab, Institute of Zoology, Lahore, Pakistan
| | - S Ahmad
- University of the Punjab Lahore, Department of Entomology, Lahore, Pakistan
| | - S Hayat
- The University of Lahore, Institute of Molecular Biology and Biotechnology, Lahore, Pakistan
| | - M A Javed
- University of the Punjab Lahore, Department of Plant Breeding and Genetics, Lahore, Pakistan
| | - M S Haider
- University of the Punjab Lahore, Department of Plant Pathology, Lahore, Pakistan
| | - Q Ali
- The University of Lahore, Institute of Molecular Biology and Biotechnology, Lahore, Pakistan
| | - S Karita
- Mie University, Graduate School of Bioresources, Tsu city, Mie, Japan
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Shatzkes DR, Zlochower AB, Steinklein JM, Pramanik BK, Filippi CG, Azhar S, Wang JJ, Sanelli PC. Impact of SARS-CoV-2 Pandemic on "Stroke Code" Imaging Utilization and Yield. AJNR Am J Neuroradiol 2021; 42:1017-1022. [PMID: 33541898 PMCID: PMC8191682 DOI: 10.3174/ajnr.a7038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/18/2020] [Indexed: 01/16/2023]
Abstract
BACKGROUND AND PURPOSE Indirect consequences of the Severe Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2) pandemic include those related to failure of patients to seek or receive timely medical attention for seemingly unrelated disease. We report our experience with stroke code imaging during the early pandemic months of 2020. MATERIALS AND METHODS Retrospective review of stroke codes during the 2020 pandemic and both 2020 and matched 2019 prepandemic months was performed. Patient variables were age, sex, hospital location, and severity of symptoms based on the NIHSS. We reviewed the results of CT of the head, CTA, CTP, and MR imaging examinations and classified a case as imaging-positive if any of the imaging studies yielded a result that related to the clinical indication for the study. Both year-to-year and sequential comparisons were performed between pandemic and prepandemic months. RESULTS A statistically significant decrease was observed in monthly stroke code volumes accompanied by a statistically significant increased proportion of positive imaging findings during the pandemic compared with the same months in the prior year (P < .001) and prepandemic months in the same year (P < .001). We also observed statistically significant increases in average NIHSS scores (P = .045 and P = .03) and the proportion of inpatient stroke codes (P = .003 and P = .03). CONCLUSIONS During our pandemic period, there was a significantly decreased number of stroke codes but simultaneous increases in positivity rates, symptom severity, and inpatient codes. We postulate that this finding reflects the documented reluctance of patients to seek medical care during the pandemic, with the shift toward a greater proportion of inpatient stroke codes potentially reflecting the neurologic complications of the virus itself.
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Affiliation(s)
- D R Shatzkes
- Departments of Radiology and Otolaryngology (D.R.S.), Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, Northwell Health, New York, New York
| | - A B Zlochower
- Department of Radiology (A.B.Z., J.M.S., B.K.P., C.G.F., P.C.S.), Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, Northwell Health, New York, New York
| | - J M Steinklein
- Department of Radiology (A.B.Z., J.M.S., B.K.P., C.G.F., P.C.S.), Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, Northwell Health, New York, New York
| | - B K Pramanik
- Department of Radiology (A.B.Z., J.M.S., B.K.P., C.G.F., P.C.S.), Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, Northwell Health, New York, New York
| | - C G Filippi
- Department of Radiology (A.B.Z., J.M.S., B.K.P., C.G.F., P.C.S.), Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, Northwell Health, New York, New York
| | - S Azhar
- Department of Neurology (S.A.), Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, Northwell Health, New York, New York
| | - J J Wang
- Institute for Health Innovations and Outcomes Research (J.J.W.), Feinstein Institutes for Medical Research, and Zucker School of Medicine at Hofstra/Northwell, Northwell Health, Manhasset, New York
| | - P C Sanelli
- Department of Radiology (A.B.Z., J.M.S., B.K.P., C.G.F., P.C.S.), Zucker School of Medicine at Hofstra/Northwell, Lenox Hill Hospital, Northwell Health, New York, New York
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Katz JM, Libman RB, Wang JJ, Filippi CG, Sanelli P, Zlochower A, Gribko M, Pacia SV, Kuzniecky RI, Najjar S, Azhar S. COVID-19 Severity and Stroke: Correlation of Imaging and Laboratory Markers. AJNR Am J Neuroradiol 2020; 42:257-261. [PMID: 33122216 DOI: 10.3174/ajnr.a6920] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/02/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND PURPOSE Coronavirus disease 2019 (COVID-19) appears to be an independent risk factor for stroke. We hypothesize that patients who develop stroke while hospitalized for severe COVID-19 will have higher inflammatory markers and distinct stroke imaging patterns compared with patients positive for COVID-19 with out-of-hospital stroke onset and milder or no COVID-19 symptoms. MATERIALS AND METHODS This is a retrospective case series of patients positive for COVID-19 on polymerase chain reaction testing with imaging-confirmed stroke treated within a large health care network in New York City and Long Island between March 14 and April 26, 2020. Clinical and laboratory data collected retrospectively included complete blood counts and creatinine, alanine aminotransferase, lactate dehydrogenase, C-reactive protein, ferritin, and D-dimer levels. All CT and MR imaging studies were independently reviewed by 2 neuroradiologists who recorded stroke subtype and patterns of infarction and intracranial hemorrhage. RESULTS Compared with patients with COVID-19 with outside-of-hospital stroke onset and milder or no COVID-19 symptoms (n = 45, 52.3%), patients with stroke already hospitalized for severe COVID-19 (n = 41, 47.7%) had significantly more frequent infarctions (95.1% versus 73.3%, P = .006), with multivascular distributions (56.4% versus 33.3%, P = .022) and associated hemorrhage (31.7% versus 4.4%, P = .001). Patients with stroke admitted with more severe COVID-19 had significantly higher C-reactive protein and ferritin levels, elevated D-dimer levels, and more frequent lymphopenia and renal and hepatic injury (all, P < .003). CONCLUSIONS Patients with stroke hospitalized with severe COVID-19 are characterized by higher inflammatory, coagulopathy, and tissue-damage biomarkers, supporting proposed pathogenic mechanisms of hyperinflammation activating a prothrombotic state. Cautious balancing of thrombosis and the risk of hemorrhagic transformation is warranted when considering anticoagulation.
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Affiliation(s)
- J M Katz
- From the Department of Neurology (J.M.K., R.B.L., M.G., S.V.P., R.I.K., S.N., S.A.)
| | - R B Libman
- From the Department of Neurology (J.M.K., R.B.L., M.G., S.V.P., R.I.K., S.N., S.A.)
| | - J J Wang
- Feinstein Institute for Medical Research at Northwell Health (J.J.W.), Manhasset, New York
| | - C G Filippi
- Radiology (C.G.F., P.S., A.Z.), Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York
| | - P Sanelli
- Radiology (C.G.F., P.S., A.Z.), Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York
| | - A Zlochower
- Radiology (C.G.F., P.S., A.Z.), Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York
| | - M Gribko
- From the Department of Neurology (J.M.K., R.B.L., M.G., S.V.P., R.I.K., S.N., S.A.)
| | - S V Pacia
- From the Department of Neurology (J.M.K., R.B.L., M.G., S.V.P., R.I.K., S.N., S.A.)
| | - R I Kuzniecky
- From the Department of Neurology (J.M.K., R.B.L., M.G., S.V.P., R.I.K., S.N., S.A.)
| | - S Najjar
- From the Department of Neurology (J.M.K., R.B.L., M.G., S.V.P., R.I.K., S.N., S.A.)
| | - S Azhar
- From the Department of Neurology (J.M.K., R.B.L., M.G., S.V.P., R.I.K., S.N., S.A.)
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Bahar P, Cota S, Fogarty C, Godbout B, Duroseau Y, Azhar S. 62 Utilizing BEFAST to Implement “Direct to CT” Stroke Algorithm at Triage Decreases Door to CT Perform Time in Emergency Department. Ann Emerg Med 2020. [DOI: 10.1016/j.annemergmed.2020.09.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Galmiche M, Deroissart C, Le Solliec MA, Rondeaux J, Azhar S, Achamrah N, Belmonte L, Lamarre A, Grigioni S, Folope V, Rimbert A, Saillard T, Delay J, Tavolacci M, Quillard M, Lambert G, Dechelotte P, Lucas N, Legrand R. Étude des neuropeptides plasmatiques et de leurs immunoglobulines respectives chez 120 patients atteints de troubles du comportement alimentaire. NUTR CLIN METAB 2019. [DOI: 10.1016/j.nupar.2019.01.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lucas N, Azhar S, Deroissart C, Le Solliec MA, Dominique M, Rondeaux J, Nobis S, Guérin C, Léon F, Rego JCD, Déchelotte P, Fetissov S, Lambert G, Legrand R. Un nouveau probiotique, Hafnia alvei, réduit le gain de poids dans deux modèles murins d’obésité en agissant sur les voies centrales et périphériques de l’homéostasie énergétique. NUTR CLIN METAB 2019. [DOI: 10.1016/j.nupar.2019.01.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Johansson J, Azhar S, Bittner S, Bielicki J. P180Atherosclerosis reduction and improved glucose control the ABCA1 agonist CS6253. In vitro and in vivo mechanism of action studies. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Johansson J, Boehm-Cagan A, Bielicki J, Azhar S, Bittner S, Michaelson D. P4494Vascular and Alzheimer's disease effects by the apoE derived ABCA1 agonist CS6253. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nobis S, Goichon A, Achamrah N, Guérin C, Azhar S, Chan P, Do-Rego JC, Vaudry D, Déchelotte P, Belmonte L, Coëffier M. Activation de l’autophagie au niveau colique dans un modèle d’anorexie chez la souris. NUTR CLIN METAB 2017. [DOI: 10.1016/j.nupar.2016.10.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ghouzali I, Lemaitre C, Bahlouli W, Azhar S, Meleine M, Déchelotte P, Ducrotté P, Coëffier M. Protéasome : une cible thérapeutique pour limiter l’hyper-perméabilité intestinale ? NUTR CLIN METAB 2017. [DOI: 10.1016/j.nupar.2016.10.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ghouzali I, Bahlouli W, Lemaitre C, Azhar S, Meleine M, Ducrotté P, Déchelotte P, Coëffier M. Une supplémentation en glutamine limite l’hyperperméabilité intestinale dans deux modèles murins mimant les symptômes du syndrome de l’intestin irritable. NUTR CLIN METAB 2017. [DOI: 10.1016/j.nupar.2016.10.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Murtaza G, Ullah H, Khan SA, Mir S, Khan AK, Nasir B, Azhar S, Abid MA. Formulation and In vitro Dissolution Characteristics of Sustained-Release Matrix Tablets of Tizanidine Hydrochloride. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i2.5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Azhar S, Hassali MA, Igbal A, Jabeen N, Latif A, Ullah N, Khan SA, Akhtar Y, Murtaza G. A Qualitative Analysis of the Perception of Academic Pharmacists Regarding their Role in Healthcare System of Two Pakistani Cities. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i2.17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Ayoub RK, Murtaza G, Imran M, Khan SA, Mir S, Khan AK, Azhar S, Mehmood Z, Sajjad A, Shah SNH. Formulation and Permeation Kinetic Studies of Flurbiprofen Gel. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i2.2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Azhar S, Hassali MA, Igbal A, Akram MR, Attique-Ur-Rehman M, Karim S, Tariq I, Asad MHHB, Tarjik I, Murtaza G. Qualitative Assessment of the Pharmacist’s Role in Punjab, Pakistan: Medical Practitioners’ Views. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i2.19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Li T, Murtaza G, Azhar S, Nasir B, Raza H, Shah SH, Farzana K, Khan AK, Mir S, Li Y, Nisa ZU, Xu X. Assessment of the determinant of choice of ‘over the counter’ analgesics among students of a university in Abbottabad, Pakistan. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i10.21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Nobis S, Goichon A, Achamrah N, Guérin C, Azhar S, Chan P, Do Rego JC, Vaudry D, Déchelotte P, Belmonte L, Coëffier M. P211: Étude du métabolisme protéique colique dans un modèle animal d’anorexie par une approche protéomique. NUTR CLIN METAB 2014. [DOI: 10.1016/s0985-0562(14)70853-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bertrand J, Marion-Letellier R, Azhar S, Chan P, Legrand R, Goichon A, Aziz M, Vaudry D, Déchelotte P, Savoye G, Coëffier M. P213: L’administration de glutamine par voie rectale modifie le profil d’expression colique des protéines ubiquitinées au cours d’une colite chez le rat : focus sur le métabolisme mitochondrial. NUTR CLIN METAB 2014. [DOI: 10.1016/s0985-0562(14)70855-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Murtaza G, Kousar R, Azhar S, Khan SA. Qualitative Assessment of the Quality of Pharmaceutical Care Services in the Province of Khyber Pakhtunkhwa, Pakistan: Hospital Pharmacists' Views. Value Health 2014; 17:A721-A722. [PMID: 27202557 DOI: 10.1016/j.jval.2014.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- G Murtaza
- COMSATS, Abbottabad KPK Pakistan, Pakistan
| | | | - S Azhar
- COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - S A Khan
- COMSATS, Abbottabad KPK Pakistan, Pakistan
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Azhar S, Murtaza G, Kousar R. A Qualitative Assessment of Doctors Perception Towards the Quality of Pharmaceutical Care Services in Khyber Pakhtunkhwa, Pakistan. Value Health 2014; 17:A752. [PMID: 27202731 DOI: 10.1016/j.jval.2014.08.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- S Azhar
- COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - G Murtaza
- COMSATS, Abbottabad KPK Pakistan, Pakistan
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Kousar R, Murtaza G, Azhar S, Khan SA. Nurses' Perception Towards the Benefits of Pharmaceutical Care Services in Tertiary Health Care Settings Pakistan: A Qualitative Insight. Value Health 2014; 17:A755. [PMID: 27202749 DOI: 10.1016/j.jval.2014.08.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | - G Murtaza
- COMSATS, Abbottabad KPK Pakistan, Pakistan
| | - S Azhar
- COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - S A Khan
- COMSATS, Abbottabad KPK Pakistan, Pakistan
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Kousar R, Murtaza G, Azhar S, Khan SA. Community Pharmacists Attitude and Perceived Need Towards the Provision of Pharmaceutical Care Services: A Qualitative Approach. Value Health 2014; 17:A755. [PMID: 27202748 DOI: 10.1016/j.jval.2014.08.223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | - G Murtaza
- COMSATS, Abbottabad KPK Pakistan, Pakistan
| | - S Azhar
- COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - S A Khan
- COMSATS, Abbottabad KPK Pakistan, Pakistan
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Maalik A, Khan FA, Mumtaz A, Mehmood A, Azhar S, Atif M, Karim S, Altaf Y, Tariq I. Pharmacological Applications of Quercetin and its Derivatives: A Short Review. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i9.26] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Azhar S, Almas I, Ur-Rehman N, Ahmed S, Tajik MI, Murtaza G. Evaluating the Perception and Awareness of Patients Regarding Ovarian Cysts in Peshawar, Pakistan. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i8.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Ullah H, Ullah B, Karim S, Tariq I, Khan AK, Mir S, Baseer A, Azhar S, Murtaza G. Malnutrition amongst Under-Five Years Children in Swat, Pakistan: Prevalence and Risk Factors. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i8.24] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Bertrand J, Marion-Letellier R, Azhar S, Chan P, Legrand R, Goichon A, Aziz M, Vaudry D, Savoye G, Déchelotte P, Coëffier M. PP281-SUN: Outstanding abstract: Glutamine Enema Regulates Colonic Ubiquitinated-Proteins but not Proteasome Activities During TNBS-Induced Colitis Leading to Increased Mitochondrial Activity. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50322-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bertrand J, Goichon A, Chan P, Azhar S, Lecleire S, Donnadieu N, Vaudry D, Déchelotte P, Cailleux AF, Coëffier M. P205 La glutamine régule le niveau d’ubiquitination de deux protéines de stress, Grp-75 et hsp74, au niveau duodénal chez le volontaire sain. NUTR CLIN METAB 2013. [DOI: 10.1016/s0985-0562(13)70536-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Azhar S, Hassali MA, Taha A, Khan SA, Murtaza G, Hussain I. Evaluation of the Perception of Community Pharmacists Regarding their Role in Pakistan's Healthcare System: A Qualitative Approach. TROP J PHARM RES 2013. [DOI: 10.4314/tjpr.v12i4.29] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Farkas J, Arcot K, Kumar R, Delbrune J, Papamitsakis N, Margulis Y, Walzman D, Dash S, Levin K, Azhar S. E-025 Initial Multicentre Experience Using the Penumbra 5Max,4MAX and 3MAX Reperfusion Catheters in Acute Stroke Therapy. J Neurointerv Surg 2013. [DOI: 10.1136/neurintsurg-2013-010870.83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Farkas J, Arcot K, Walzman D, Kumar R, Delbrune J, Papamitsakis N, Margulis Y, Dash S, Levin K, Azhar S. E-044 The Penumbra 5MAX, 4MAX and 3MAX Reperfusion Catheters in Treatment of Acute Ischaemic Stroke: Initial Clinical Experience. J Neurointerv Surg 2013. [DOI: 10.1136/neurintsurg-2013-010870.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Khan TM, Shahzad CM, Ahmed MKK, Azhar S. Attitudes of Emergency Department Staff towards the Role of Clinical Pharmacists in a Region of Saudi Arabia - A Pilot Study. TROP J PHARM RES 2012. [DOI: 10.4314/tjpr.v11i3.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Rehman K, Akash MSH, Azhar S, Khan SA, Abid R, Waseem A, Murtaza G, Sherazi TA. A biochemical and histopathologic study showing protection and treatment of gentamicin-induced nephrotoxicity in rabbits using vitamin C. Afr J Tradit Complement Altern Med 2012; 9:360-5. [PMID: 23983367 DOI: 10.4314/ajtcam.v9i3.9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Gentamicin and vitamin C have been proposed as nephrotoxic and antioxidant, respectively. This study involved biochemical and histopathologic investigation showing protection and treatment of gentamicin-induced nephrotoxicity in rabbits using vitamin C for 26 days hypothesizing that whether vitamin C would inhibit or decrease the raised serum urea and creatinine levels. This study was conducted on 25 healthy male albino rabbits (average weight 1.5±0.2 kg), classified into 5 groups: group A, B, C, D and E for nephrocurative (study-I) and nephroprotective (study-II) studies. Control group of rabbits (group A) received only the vehicle of gentamicin ampoule. In study-I, gentamicin sulphate (GS 80 mg/kg, i.m.) was administered to group B and C rabbits for ten days, then group C rabbits received vitamin C 250 mg/Kg for remaining 16 days. Group D and E received GS 80 mg/kg and GS 80 mg/kg i.m.-vitamin C 250 mg/kg orally, respectively during whole period (26 days) of study-II. After 26 days, various biochemical parameters, i.e. serum creatinine, blood urea nitrogen (BUN), and serum antioxidant activity, and histopathologic investigations were made. Nephrotoxicity was observed in rabbit groups B, C and D as evident from significant (p<0.05) high levels of serum creatinine and BUN and low serum antioxidant levels as compared to the levels of control group. Decrease in the levels of serum creatinine and BUN along with the increase in serum antioxidant activity was observed after vitamin C treatment in group C. While, renal-protective role of vitamin C was seen in group E as compared to the control. In conclusion, Gentamicin induced nephrotoxicity can be attenuated or treated using vitamin C.
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Affiliation(s)
- K Rehman
- Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University Hangzhou, China
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Manaf KA, Wan Yahya W, Tan H, Ali RA, Othman H, Azhar S, Ibrahim NM. 1.094 THE PREVALENCE OF NON MOTOR SYMPTOMS AND RESTLESS LEGS SYNDROME IN PARKINSON'S DISEASE: CORRELATION WITH QUALITY OF LIFE. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70208-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Azhar S, Hassali MA, Ibrahim MMI. Perceptions of Hospital Pharmacist’s Role in Pakistan’s Healthcare System: A Cross-Sectional Survey. TROP J PHARM RES 2011. [DOI: 10.4314/tjpr.v10i1.66535] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Abstract
Fifty-two young individuals suffering from severe haemophilia A and B volunteered to be compared with school- and college-going students for oral health status description and subsequent management. A total of 244 students (84.42% boys and 15.58% girls) with the age group of 13-23 years were divided into two groups, A and B (controls). The purpose of this study was to increase awareness about evidence-based dental practices by oral examinations followed by comparisons of periodontal health and prevalence of malocclusions among medically compromised students and healthy controls. Results described the oral health in severe haemophilic population to be compromised with combined simplified health index score of 0.50 and Decayed/Modified/Filled Teeth (DMFT) index score of 2.07 when compared with 0.42 and 0.95, respectively, among group B. Although prevalence of malocclusion and orthodontic treatment needs among group A were higher, yet it was not confirmed as a reason for degraded dental and periodontal status. However, spontaneous and/or toothbrush (trauma)-induced gingival bleeding episodes among group A could be explained as factors discouraging oral hygiene maintenance, particularly self-administered measures. Four haemophiliacs presented with symptoms of Temporomandibular Joint Dysfunction Syndrome (TMPDS). Evidence-based oral medicine and clinical practices need to be encouraged and applied to enhance the quality of life among haemophiliacs, particularly in developing world. Dental treatment needs of haemophilic population appear to be greater and maybe incorporated in routine dental practices, at institutional and individual levels.
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Affiliation(s)
- S Azhar
- Punjab Dental Hospital, Lahore, Pakistan.
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Zemke D, Azhar S, Majid A. The mTOR pathway as a potential target for the development of therapies against neurological disease. ACTA ACUST UNITED AC 2007; 20:495-9. [DOI: 10.1358/dnp.2007.20.8.1157618] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [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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Gropen TI, Gagliano PJ, Blake CA, Sacco RL, Kwiatkowski T, Richmond NJ, Leifer D, Libman R, Azhar S, Daley MB. Quality improvement in acute stroke: The New York State Stroke Center Designation Project. Neurology 2006; 67:88-93. [PMID: 16832083 DOI: 10.1212/01.wnl.0000223622.13641.6d] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Many hospitals lack the infrastructure required to treat patients with acute stroke. The Brain Attack Coalition (BAC) published guidelines for the establishment of primary stroke centers. OBJECTIVE To determine if stroke center designation and selective triage of acute stroke patients improve quality of care. METHODS Baseline chart abstraction was performed on all stroke patients admitted to 32 hospitals serving Brooklyn and Queens, NY, from March to May 2002. Hospitals were invited to meet BAC guideline-based criteria. Adherence was verified by on-site visits. After designation, acute stroke patients were selectively triaged. Remeasurement data were collected from August to October 2003. RESULTS The authors abstracted 1,598 charts at baseline and 1,442 charts at remeasurement. From baseline to remeasurement, median times decreased for door to physician contact (25 vs 15 minutes, p = 0.001), CT performance for potential tissue plasminogen activator (t-PA) candidates (68 vs 32 minutes, p < 0.001), and t-PA administration (109 vs 98 minutes (p = NS). IV t-PA utilization increased from 2.4 to 5.2% (p < 0.005), select t-PA protocol violations decreased from 11.1 to 7.9% (p = NS), and the stroke unit admission rate increased from 16 to 39% (p < 0.001). In stroke centers (n = 14) vs nondesignated hospitals (n = 18), there were shorter median times from door to physician contact (10 vs 25 minutes, p < 0.001), CT performance for potential t-PA candidates (31 vs 40 minutes, p = NS), and t-PA administration (95 vs 115 minutes, p < 0.05). Stroke centers, compared with nondesignated centers, admitted acute stroke patients to stroke units more often (55.9 vs 10.9%, p < 0.001). CONCLUSIONS Stroke center designation and selective triage of acute stroke patients improved the quality of care, including access to timely thrombolytic therapy and stroke units.
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Affiliation(s)
- T I Gropen
- Department of Neurology, Long Island College Hospital and State University of New York-Health Science Center at Brooklyn, 11201, USA.
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Furuya K, Takeda H, Azhar S, McCarron RM, Chen Y, Ruetzler CA, Wolcott KM, DeGraba TJ, Rothlein R, Hugli TE, del Zoppo GJ, Hallenbeck JM. Examination of several potential mechanisms for the negative outcome in a clinical stroke trial of enlimomab, a murine anti-human intercellular adhesion molecule-1 antibody: a bedside-to-bench study. Stroke 2001; 32:2665-74. [PMID: 11692032 DOI: 10.1161/hs3211.098535] [Citation(s) in RCA: 131] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Enlimomab, a murine monoclonal anti-human intercellular adhesion molecule (ICAM)-1 antibody, had a negative outcome in a multicenter acute-stroke trial. We did a bedside-to-bench study in standardized rat stroke models to explore mechanisms for these untoward results. METHODS After focal brain ischemia in Wistar rats and spontaneously hypertensive rats (SHR), we administered murine anti-rat ICAM-1 antibody (1A29), subclass-matched murine immunoglobulin (IgG1), or vehicle intravenously. To examine whether rat anti-mouse antibodies were generated against the mouse protein and whether these were deleterious, we sensitized Wistar rats with 1A29 or vehicle 7 days before surgery. Infarct volume, tissue myeloperoxidase activity, neutrophil CD11b expression, and microvascular E-selectin, P-selectin, and ICAM-1 expression were examined 48 hours after surgery. Complement activation was serially assessed for 2 hours after a single injection of either 1A29 or vehicle. RESULTS 1A29 treatment did not significantly reduce infarct size in either strain. 1A29 sensitization augmented infarct size and generated rat anti-mouse antibodies. Although 1A29 inhibited neutrophil trafficking shown by reduction in brain myeloperoxidase activity, circulating neutrophils were activated and displayed CD11b upregulation. Complement was activated in 1A29-sensitized Wistar rats and 1A29-treated SHR. E-selectin (SHR), endothelial P-selectin (Wistar and SHR), and ICAM-1 (SHR) were upregulated in animals treated with 1A29. CONCLUSIONS Administration to rats of a murine antibody preparation against ICAM-1, 1A29, elicits the production of host antibodies against the protein, activation of circulating neutrophils, complement activation, and sustained microvascular activation. These observations provide several possible mechanisms for central nervous system-related clinical deterioration that occurred when Enlimomab was given in acute ischemic stroke.
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Affiliation(s)
- K Furuya
- Stroke Branch, National Institutes of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Md, USA
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Cherradi N, Bideau M, Arnaudeau S, Demaurex N, James RW, Azhar S, Capponi AM. Angiotensin II promotes selective uptake of high density lipoprotein cholesterol esters in bovine adrenal glomerulosa and human adrenocortical carcinoma cells through induction of scavenger receptor class B type I. Endocrinology 2001; 142:4540-9. [PMID: 11564720 DOI: 10.1210/endo.142.10.8412] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Angiotensin II is one of the main physiological regulators of aldosterone biosynthesis in the zona glomerulosa of the adrenal cortex. The hormone stimulates intracellular cholesterol mobilization to the mitochondrion for steroid biosynthesis. Here we have examined whether angiotensin II also modulates exogenous lipoprotein cholesterol ester supply to the steroidogenic machinery and whether this control is exerted on the selective transport of high density lipoprotein-derived cholesterol ester to intracellular lipid droplets through the scavenger receptor class B type I. In bovine adrenal glomerulosa and human NCI H295R adrenocortical carcinoma cells, high density lipoprotein stimulated steroid production. Angiotensin II pretreatment for 24 h potentiated this response. Fluorescence microscopy of cellular uptake of reconstituted high density lipoprotein containing a fluorescent cholesterol ester revealed an initial, time-dependent narrow labeling of the cell membrane followed by an intense accumulation of the fluorescent cholesterol ester within lipid droplets. At all time points, labeling was more pronounced in cells that had been treated for 24 h with angiotensin II. Fluorescence incorporation into cells was prevented by a monoclonal antibody directed against apolipoprotein A-I. Upon quantitative fluorometric determination, cholesterol ester uptake in angiotensin II-treated bovine cells was increased to 175 +/- 15% of controls after 2 h and to 260 +/- 10% after 4 h of exposure to fluorescent high density lipoprotein. The amount of scavenger receptor class B type I protein detected in cells treated with angiotensin II for 24 h reached 203 +/- 12% of that measured in control cells (n = 3, P < 0.01). In contrast, low density lipoprotein receptors were only minimally affected by angiotensin II treatment. This increase in scavenger receptor class B type I protein was associated with a 3-fold induction of scavenger receptor class B type I mRNA, which could be prevented by actinomycin D but not by cycloheximide. Similar results were obtained in the human adenocarcinoma cell line H295R. These observations show that angiotensin II regulates the scavenger receptor class B type I-mediated selective transport of lipoprotein cholesterol ester across the cell membrane as a major source of precursor for mineralocorticoid biosynthesis in both human and bovine adrenal cells.
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Affiliation(s)
- N Cherradi
- Division of Endocrinology and Diabetology, Faculty of Medicine, University Hospital, CH-1211 Geneva, Switzerland
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Medicherla R, Leers-Sucheta S, Luo Y, Azhar S. Impaired activation of AP-1 and altered expression of constituent proteins in rat adrenal during ageing. Mech Ageing Dev 2001; 122:1169-86. [PMID: 11389931 DOI: 10.1016/s0047-6374(01)00258-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Oxidative stress appears to be one of the primary factors contributing to an age related decline in steroidogenic response in rat adrenocortical and testicular Leydig cells. In this report we concentrate on age-related changes in the DNA binding activity of the transcription factor AP-1 which is particularly responsive to changes in cellular oxidative conditions: adrenal nuclear extracts from young mature (5 months) and old (24 months) rats treated with, and without, lipopolysaccharide (LPS) were studied. AP-1 binding activity, as measured by electrophoretic mobility shift assays (EMSA), was diminished approximately 70% with age in unstimulated adrenals. Following LPS treatment, AP-1 binding activity increased significantly in the adrenals of both young and old animals; however, the level of AP-1 binding achieved in LPS-stimulated old rats was less than that observed for LPS-stimulated young rats. There was no corresponding change in the binding activity of housekeeping transcription factors SP-1 and OCT-1. To further understand these observations, compositional changes in the members of the AP-1 DNA-binding complex were examined by a super-shift assay and Western blot analysis. In adrenals from old rats, a significant decrease in the amount of Fra2 was noted under basal conditions, whereas, substantial decreases in c-Fos, Jun D and c-Jun were observed in response to LPS treatment. In contrast, basal levels of JunB, an inhibitor of the trans-activating function of c-Jun and repressor of AP-1-dependent transcription, were significantly elevated in adrenals from old rats compared to young rats. Together, these findings suggest that ageing-induced oxidative stress may contribute to impaired functional expression of AP-1 by differentially regulating the steady state levels of AP-1 components. The observed decrease in AP-1 binding activity in ageing adrenals is most likely due to decreased expression of the AP-1 activating components (c-Fos, c-Jun, JunD, etc.) and increased expression of JunB, resulting in a switch from transcriptionally active AP-1 complexes observed in young rats to less efficient JunB containing complexes in old rats.
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Affiliation(s)
- R Medicherla
- Geriatric Research, Education and Clinical Centre (GRECC), VA Palo Alto Health Care System (GRECC, 182B), 3801 Miranda Ave, Palo Alto, CA 94304, USA
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Swarnakar S, Beers J, Strickland DK, Azhar S, Williams DL. The apolipoprotein E-dependent low density lipoprotein cholesteryl ester selective uptake pathway in murine adrenocortical cells involves chondroitin sulfate proteoglycans and an alpha 2-macroglobulin receptor. J Biol Chem 2001; 276:21121-8. [PMID: 11274190 DOI: 10.1074/jbc.m101691200] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cells acquire lipoprotein cholesterol by receptor-mediated endocytosis and selective uptake pathways. In the latter case, lipoprotein cholesteryl ester (CE) is transferred to the plasma membrane without endocytosis and degradation of the lipoprotein particle. Previous studies with Y1/E/tet/2/3 murine adrenocortical cells that were engineered to express apolipoprotein (apo) E demonstrated that apoE expression enhances low density lipoprotein (LDL) CE uptake by both selective and endocytic pathways. The present experiments test the hypothesis that apoE-dependent LDL CE selective uptake is mediated by scavenger receptor, class B, type I (SR-BI). Surprisingly, SR-BI expression was not detected in the Y1/E/tet/2/3 clone of Y1 adrenocortical cells, indicating the presence of a distinct apoE-dependent pathway for LDL CE selective uptake. ApoE-dependent LDL CE selective uptake in Y1/E/tet/2/3 cells was inhibited by receptor-associated protein and by activated alpha(2)-macroglobulin (alpha(2)M), suggesting the participation of the LDL receptor-related protein/alpha(2)M receptor. Reagents that inhibited proteoglycan synthesis or removed cell surface chondroitin sulfate proteoglycan completely blocked apoE-dependent LDL CE selective uptake. None of these reagents inhibited SR-BI-mediated LDL CE selective uptake in the Y1-BS1 clone of Y1 cells in which LDL CE selective uptake is mediated by SR-BI. We conclude that LDL CE selective uptake in adrenocortical cells occurs via SR-BI-independent and SR-BI-dependent pathways. The SR-BI-independent pathway is an apoE-dependent process that involves both chondroitin sulfate proteoglycans and an alpha(2)M receptor.
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Affiliation(s)
- S Swarnakar
- Department of Pharmacological Sciences, University Medical Center, State University of New York, Stony Brook, New York 11794, USA
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LaBiche R, Koziol D, Quinn TC, Gaydos C, Azhar S, Ketron G, Sood S, DeGraba TJ. Presence of Chlamydia pneumoniae in human symptomatic and asymptomatic carotid atherosclerotic plaque. Stroke 2001; 32:855-60. [PMID: 11283382 DOI: 10.1161/01.str.32.4.855] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Chlamydia pneumoniae has been identified in atherosclerotic plaques of patients with cerebrovascular and cardiovascular disease. However, the direct causative effect of C pneumoniae infection in the activation of atherosclerotic plaque to a prothrombotic state remains to be established. The aim of the present study is to examine the correlation between intraplaque presence of chlamydiae and symptomatic carotid disease in humans. METHODS Plaques from 37 symptomatic and 57 asymptomatic consenting patients undergoing carotid endarterectomy were snap-frozen, and the tissue was prepared for polymerase chain reaction analysis for Chlamydia pneumoniae per Institutional Review Board-approved protocol. Blood was drawn from each patient at the time of surgery for serological analysis. RESULTS The overall rate of plaques positive for C pneumoniae was 14.82%, with 5 of 37 (13.5%) plaques from symptomatic patients and 9 of 57 (15.8%) from asymptomatic patients, which revealed a definitive presence of the organism. No association existed between C pneumoniae presence and symptomatic disease (P:=1.0). Also, no association existed between presence of C pneumoniae and severity of stenosis. Finally, seropositivity for anti-chlamydial IgG, IgA, and IgM anti-chlamydial antibodies did not correlate with identification of C pneumoniae in the plaques. However, high-serum anti-chlamydial IgA levels (>/=1:128) were associated with occurrence of symptomatic disease (P=0.03; odds ratio, 2.86; 95% CI, 1.12 to 7.28). CONCLUSIONS Presence of C pneumoniae as a single factor does not appear to be sufficient to explain the occurrence of cerebrovascular symptoms. Low sensitivity of seropositivity for IgG, IgA, or IgM associated with PCR-identified C pneumoniae presence in the plaque makes it unlikely to be valuable as the single determining factor for actively infected plaque. Association of high-level anti-chlamydial IgA with symptomatic disease suggests that chronic or acute chlamydial infection anywhere in the body could play a role in atherosclerotic plaque activation and be used as a marker to target populations in future stroke prevention trials.
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Affiliation(s)
- R LaBiche
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
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Reaven E, Leers-Sucheta S, Nomoto A, Azhar S. Expression of scavenger receptor class B type 1 (SR-BI) promotes microvillar channel formation and selective cholesteryl ester transport in a heterologous reconstituted system. Proc Natl Acad Sci U S A 2001; 98:1613-8. [PMID: 11171999 PMCID: PMC29305 DOI: 10.1073/pnas.98.4.1613] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In the "selective" cholesteryl ester (CE) uptake process, surface-associated lipoproteins [high density lipoprotein (HDL) and low density lipoprotein] are trapped in the space formed between closely apposed surface microvilli (microvillar channels) in hormone-stimulated steroidogenic cells. This is the same location where an HDL receptor (SR-BI) is found. In the current study, we sought to understand the relationship between SR-BI and selective CE uptake in a heterologous insect cell system. Sf9 (Spodoptera frugiperda) cells overexpressing recombinant SR-BI were examined for (i) SR-BI protein by Western blot analysis and light or electron immunomicroscopy, and (ii) selective lipoprotein CE uptake by the use of radiolabeled or fluorescent (BODIPY-CE)-labeled HDL. Noninfected or infected control Sf9 cells do not express SR-BI, show microvillar channels, or internalize CEs. An unexpected finding was the induction of a complex channel system in Sf9 cells expressing SR-BI. SR-BI-expressing cells showed many cell surface double-membraned channels, immunogold SR-BI, apolipoprotein (HDL) labeling of the channels, and high levels of selective HDL-CE uptake. Thus, double-membraned channels can be induced by expression of recombinant SR-BI in a heterologous system, and these specialized structures facilitate both the binding of HDL and selective HDL-CE uptake.
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MESH Headings
- Animals
- Biological Transport
- Blotting, Western/methods
- Boron Compounds
- CD36 Antigens/biosynthesis
- CD36 Antigens/genetics
- Cell Line
- Cholesterol Esters/metabolism
- Fluorescent Dyes
- Iodine Radioisotopes
- Isotope Labeling
- Lipoproteins, HDL/metabolism
- Lipoproteins, HDL3
- Membrane Proteins
- Microscopy, Electron/methods
- Microscopy, Fluorescence/methods
- Microvilli/metabolism
- Protein Binding
- Rats
- Receptors, Immunologic
- Receptors, Lipoprotein/biosynthesis
- Receptors, Lipoprotein/genetics
- Receptors, Scavenger
- Scavenger Receptors, Class B
- Spodoptera
- Tritium
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Affiliation(s)
- E Reaven
- Geriatric Research, Education, and Clinical Center, Department of Veterans Affairs, Palo Alto Health Care System, Palo Alto, CA 94304, USA.
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Chen NG, Azhar S, Abbasi F, Carantoni M, Reaven GM. The relationship between plasma glucose and insulin responses to oral glucose, LDL oxidation, and soluble intercellular adhesion molecule-1 in healthy volunteers. Atherosclerosis 2000; 152:203-8. [PMID: 10996356 DOI: 10.1016/s0021-9150(99)00460-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This study was initiated to describe the relationships between plasma glucose and insulin responses to oral glucose and the concentrations of partially oxidized low density lipoprotein (poxLDL) and soluble intercellular adhesion molecule-1 (sICAM-1) in 23 healthy, non-diabetic volunteers. Results demonstrated that plasma glucose (r=0.65, P<0.002) and insulin (r=0.58, P<0.007) responses to a 75-g oral glucose challenge were highly correlated to poxLDL concentrations. Plasma glucose (r=0.63, P<0.002) and insulin (r=0.68, P<0.001) concentrations also significantly correlated with sICAM-1 concentrations. Furthermore, concentrations of poxLDL and sICAM-1 were significantly related (r=0.55, P<0.001). These relationships remained statistically significant when adjusted for differences in age, gender, body mass index, and lipoprotein concentrations. These results provide further evidence that circulating LDL particles are more highly oxidized in insulin resistant states, and demonstrate the presence of an in vivo relationship between insulin resistance, LDL oxidized state, and sICAM-1 concentrations. These results help explain why soluble forms of adhesion molecules are increased in clinical conditions characterized by insulin resistance, and support the possibility that LDL oxidizability is increased in insulin resistant subjects, and that the increase in sICAM-1 results from stimulation of cellular adhesion molecules by more highly oxidized LDL.
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Affiliation(s)
- N G Chen
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
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Abstract
Masoprocol (nordihydroguaiaretic acid), a lipoxygenase inhibitor isolated from the creosote bush, has been shown to decrease adipose tissue lipolytic activity both in vivo and in vitro. The present study was initiated to test the hypothesis that the decrease in lipolytic activity by masoprocol resulted from modulation of adipose tissue hormone-sensitive lipase (HSL) activity. The results indicate that oral administration of masoprocol to rats with fructose-induced hypertriglyceridemia significantly decreased their serum free fatty acid (FFA; P < 0.05), triglyceride (TG; P < 0.001), and insulin (P < 0.05) concentrations. In addition, isoproterenol-induced lipolytic rate and HSL activity were significantly lower (P < 0.001) in adipocytes isolated from masoprocol compared with vehicle-treated rats and was associated with a decrease in HSL protein. Incubation of masoprocol with adipocytes from chow-fed rats significantly inhibited isoproterenol-induced lipolytic activity and HSL activity, associated with a decrease in the ability of isoproterenol to phosphorylate HSL. Masoprocol had no apparent effect on adipose tissue phosphatidylinositol 3-kinase activity, but okadaic acid, a serine/threonine phosphatase inhibitor, blocked the antilipolytic effect of masoprocol. The results of these in vitro and in vivo experiments suggest that the antilipolytic activity of masoprocol is secondary to its ability to inhibit HSL phosphorylation, possibly by increasing phosphatase activity. As a consequence, masoprocol administration results in lower serum FFA and TG concentrations in hypertriglyceridemic rodents.
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Affiliation(s)
- M S Gowri
- Stanford University School of Medicine, CA 94305, USA
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Abstract
Historically, extracts of the creosote bush have been used by native healers of the Southwest region of North America to treat symptoms of type 2 diabetes. More recently, we have shown that masoprocol (nordihydroguaiaretic acid), a pure compound isolated from the creosote bush (Larrea tridentata), decreases serum glucose and triglyceride (TG) levels when administered orally in rodent models of type 2 diabetes. The present studies were undertaken to determine if masoprocol also decreases TG concentrations in rats with fructose-induced hypertriglyceridemia (HTG), a nondiabetic model of HTG associated with insulin resistance and hyperinsulinemia. Serum TG levels, which were significantly higher after rats ate a fructose-enriched (60% by weight) diet for 14 days as compared with chow-fed controls (411 v 155 mg/dL, P < .01), decreased in a stepwise fashion in fructose-fed rats treated orally with masoprocol for 4 to 8 days over a dose range of 10 to 80 mg/kg twice daily. Using the nonionic detergent Triton WR 1339 to compare TG secretion rates in masoprocol- and vehicle-treated rats, masoprocol at a dose of 40 or 80 mg/kg twice daily, significantly reduced hepatic TG secretion (P < .01) and liver TG content (P < .001), whereas lower doses of masoprocol decreased serum TG without an apparent reduction in hepatic TG secretion. Administration of Intralipid (a fat emulsion) showed that the half-time for removal of TG from serum was also shorter in masoprocol-treated rats versus vehicle-treated controls (31 v 64 minutes, P < .05). In addition adipose tissue lipoprotein lipase (LPL) activity was increased in masoprocol-treated rats and adipose tissue hormone-sensitive lipase (HSL) activity was decreased. We conclude that masoprocol administration to rats with fructose-induced HTG results in lower serum TG levels associated with reduced hepatic TG secretion and increased peripheral TG clearance.
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Affiliation(s)
- K A Scribner
- Shaman Pharmaceuticals, South San Francisco, CA 94080-4812, USA
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