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Hanidu A, Djongianto TU, Kovalenko M, Gupta E, Jansen M, Usman S, Joash K, Challacombe FL, Lees C. Determining psychological impact of delivery mode prediction using ultrasound and clinical assessment. Ultrasound Obstet Gynecol 2024. [PMID: 38308853 DOI: 10.1002/uog.27601] [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] [Received: 12/08/2023] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/05/2024]
Affiliation(s)
- A Hanidu
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - T U Djongianto
- Section of Women's Mental Health, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - M Kovalenko
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - E Gupta
- Section of Women's Mental Health, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - M Jansen
- Section of Women's Mental Health, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - S Usman
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - K Joash
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - F L Challacombe
- Section of Women's Mental Health, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - C Lees
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium
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Khan QUA, Usman S, Haneef K, Khan BW, Mirza T. Human amniotic epithelial cells (HAECS); a potential cell type for the hepatic disorders. J PAK MED ASSOC 2024; 74:S51-S58. [PMID: 38385472 DOI: 10.47391/jpma-duhs-s11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
OBJECTIVE To isolate a homogenous population of human amniotic epithelial cells (hAECs) from the amniotic membrane of the human placenta and differentiate them into hepatic-like cells with the help of small molecules. METHODS hAECs were isolated by using the enzymatic digestion method and characterized for the presence of specific stem cell markers. In-vitro, hepatic differentiation of hAECs was carried out by using a combination of small molecules. Differentiated cells were observed under a live cell imaging microscope for morphological changes followed by gene and protein expression analysis by qPCR and immunocytochemistry respectively. RESULTS The isolated hAECs attained characteristic cuboid epithelial shape and express stem cells marker. The hepatic differentiation method was optimized based on soluble chemical compounds supplied in the culture medium. The differentiated hAECs phenotypically acquire hepatic-like cell features and expressed hepatic markers as well as hepatic protein albumin at immature levels. CONCLUSIONS The isolated population of hAECs is highly proliferative. Moreover, hepatic markers expression in the isolated hAECs makes them an exclusive source for the treatment of chronic liver diseases.
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Affiliation(s)
| | | | - Kanwal Haneef
- Dr Zafar H. Zaidi Centre for Proteomics, University of Karachi, Karachi, Pakistan
| | | | - Talat Mirza
- Department of Molecular Medicine, Ziauddin University
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Usman S, Anjum A, Usman M, Imran MS, Ali M, Moustafa M, Rehman MS, Hussain T, Sarwar F, Azad A, Hussain I, Naseer J, Tiwana U, Hafeez S. Antibiotic resistance pattern and pathological features of avian pathogenic Escherichia coli O78:K80 in chickens. BRAZ J BIOL 2024; 84:e257179. [DOI: 10.1590/1519-6984.257179] [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: 10/11/2021] [Accepted: 05/06/2022] [Indexed: 11/22/2022] Open
Abstract
Abstract Avian pathogenic Escherichia coli (APEC) induces colibacillosis, an acute and systemic disease, resulting in substantial economic losses in the poultry sector. This study aimed to investigate the antibiotic resistance pattern associated with frequent virulence gene distribution in APEC O78:K80 that may cause pathological alterations in chickens. The antibiogram profile showed high resistance to erythromycin, chloramphenicol, tetracycline, ampicillin, and co-trimoxazole, followed by intermediate resistance to ciprofloxacin, levofloxacin, enrofloxacin, norfloxacin, nitrofurantoin, and doxycycline hydrochloride, and sensitive to amikacin, streptomycin, gentamicin, and colistin. Virulence gene distribution identifies eight (irp-2, iutA, ompT, iss, iucD, astA, hlyF, iroN) genes through a conventional polymerase chain reaction. APEC O78:K80 caused significantly high liver enzyme concentrations, serum interleukin-6 and tumor necrosis factor-alpha levels in experimental birds. Also, infected birds have hypoproteinemia, hypoalbuminemia, and hyperglobulinemia. Necropsy examination revealed fibrinous perihepatitis and pericarditis, congested lungs, intestinal ecchymotic hemorrhages and necrotizing granulomatosis of the spleen. Histopathological examination depicted hepatocellular degeneration, myocardial necrosis, interstitial nephritis, intestinal hemorrhages and lymphopenia in the spleen. This study is the first evidence to assess the antibiotic resistance profile linked with virulence genes and clinicopathological potential of APEC O78:K80 in chickens in Pakistan, which could be a useful and rapid approach to prevent and control the disease by developing the control strategies.
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Affiliation(s)
- S. Usman
- University of Veterinary and Animal Sciences, Pakistan
| | - A. Anjum
- Muhammad Nawaz Shareef University of Agriculture Multan, Pakistan
| | - M. Usman
- University of Veterinary and Animal Sciences, Pakistan
| | - M. S. Imran
- University of Veterinary and Animal Sciences, Pakistan
| | - M. Ali
- BZU Bahadur sub campus Layyah, Pakistan
| | - M. Moustafa
- King Khalid University; South Valley University, Egypt
| | | | - T. Hussain
- The Islamia University of Bahawalpur, Pakistan
| | - F. Sarwar
- Poultry Research Institute, Pakistan
| | - A. Azad
- Poultry Research Institute, Pakistan
| | | | - J. Naseer
- The Islamia University of Bahawalpur, Pakistan
| | - U. Tiwana
- Range Land Research Institute, Pakistan
| | - S. Hafeez
- University of Agriculture Faisalabad, Pakistan
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Hammad Uddin MK, Khan Sadiq MS, Ahmed A, Khan M, Maniar T, Mateen SM, Saba B, Kashif SM, Usman S, Najeeb S, Khurshid Z, Zafar MS. Applications of Metformin in Dentistry-A review. J Taibah Univ Med Sci 2023; 18:1299-1310. [PMID: 37275952 PMCID: PMC10239065 DOI: 10.1016/j.jtumed.2023.03.014] [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] [Received: 11/12/2022] [Revised: 03/10/2023] [Accepted: 03/30/2023] [Indexed: 06/07/2023] Open
Abstract
Metformin is a versatile drug with numerous medical uses. It is known primarily as an anti-hyperglycemic drug that has become the main oral blood-glucose-lowering medication for managing type 2 diabetes mellitus globally. Its use has been reported in a variety of oral conditions and dentistry in general. Recent clinical trials have indicated the effectiveness of adjunct topical application of metformin in improving the periodontal parameters of patients with diabetes and periodontitis. Additionally, studies have suggested that metformin stimulates odontogenic differentiation and mineral synthesis of stem cells in the tooth pulp. Metformin also stimulates osteoblast proliferation, decreases osteoclast activity and exerts regenerative effects on periodontal bone, thus making it a viable candidate for periodontal regeneration. Metformin monotherapy significantly enhances osseointegration of endosseous implants and has been reported to have anti-cancer effects on oral squamous cell carcinoma by impeding tumor progression. Animal studies have indicated that metformin improves orthodontic tooth movement and resists orthodontic appliance corrosion. This narrative review aims to provide a current summary of research highlighting the prospective uses of metformin in dentistry.
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Affiliation(s)
- Muhammad Khawaja Hammad Uddin
- Department of Science of Dental Materials, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Sindh, Pakistan
- School of Dental Care Professionals (SDCP), Dow University of Health Sciences Karachi, Sindh, Pakistan
| | - Muhammad Shahrukh Khan Sadiq
- Department of Oral Pathology, Bahria University Dental College, Bahria University Health Sciences Campus (Karachi) Karachi, Sindh, Pakistan
| | - Ashfaq Ahmed
- Department of Science of Dental Materials, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Sindh, Pakistan
- Department of Oral Pathology, Bahria University Dental College, Bahria University Health Sciences Campus (Karachi) Karachi, Sindh, Pakistan
| | - Mariam Khan
- Department of Science of Dental Materials, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Sindh, Pakistan
- Department of Oral Pathology, Bahria University Dental College, Bahria University Health Sciences Campus (Karachi) Karachi, Sindh, Pakistan
| | - Tooba Maniar
- Department of Science of Dental Materials, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Sindh, Pakistan
- Department of Oral Pathology, Bahria University Dental College, Bahria University Health Sciences Campus (Karachi) Karachi, Sindh, Pakistan
| | - Syeda Mamoona Mateen
- Dr Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Sindh, Pakistan
| | - Bilquees Saba
- Dr Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Sindh, Pakistan
- Department of Medicine, Ziauddin Medical College, Ziauddin University, Karachi, Sindh, Pakistan
| | - Syed Muhammad Kashif
- Dr Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Sindh, Pakistan
- Department of General Medicine, Civil Hospital, Dow University of Health Sciences, Karachi, Sindh, Pakistan
| | - Shumaila Usman
- Dr Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Sindh, Pakistan
- Department of Molecular Medicine, Ziauddin Medical College, Ziauddin University, Karachi, Sindh, Pakistan
| | - Shariq Najeeb
- Evidentia Dental Outcomes Research, Calgary, Alberta, Canada
- Schulich Dentistry, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C, Canada
| | - Zohaib Khurshid
- Department of Prosthodontics and Dental Implantology, King Faisal University, Hofuf, Al-Ahsa, Saudi Arabia
- Center of Excellence for Regenerative Dentistry, Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Muhammad Sohail Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madina Al Munawara, 41311, Saudi Arabia
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan
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Sani AI, Rubab Z, Usman S, Ahmed SZ, Arif S. Costimulatory Molecules OX40 and OX40L Upregulation in Oral Squamous Cell Carcinoma: A Blood-Based Study. Eur J Dent 2023; 17:1194-1200. [PMID: 36652956 PMCID: PMC10756792 DOI: 10.1055/s-0042-1760375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
OBJECTIVES This research aimed to determine OX40 and OX40L mRNA expression in blood samples of naive oral squamous cell carcinoma (OSCC) patients in different histological grades and clinical stages. The in silico analysis was performed using the STRING database for functional association and a better understanding of the interactions of OX40 and its ligand with other proteins. MATERIALS AND METHODS In this study, we recruited 141 newly diagnosed patients of OSCC. Levels of OX40 and OX40L mRNA expression were explored using real-time quantitative polymerase chain reaction. An in silico tool was also utilized to evaluate the OX40/OX40L interactome. RESULTS The results showed higher OX40 expressional levels in the late stage (23-fold) compared with the early stage (8.5-fold) (p = < 0.001). A similar trend was seen in OX40L mRNA expression, revealing a fold change of 5.8 in the early stage in comparison to 9.9-fold change in the late stage (p = < 0.001). Overexpression of OX40 and OX40L was found in different histological grades (p = 0.005 and p = < 0.001, respectively). Overexpression of OX40 and OX40L was detected in habits such as smoking and paan intake, whereas statistically significant upregulation was observed in the cheek, lip, and alveolus tumors. However, there was no substantial difference in OX40 and OX40L expression based on age or gender. The functional interactions, that is, interactomes of OX40 and OX40L with other proteins have been determined by in silico analysis. CONCLUSION Based on current study findings, despite OX40 and OX40L upregulation in newly diagnosed OSCC patients, it is speculated that the physiological function of these molecules is altered due to immune system exhaustion.
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Affiliation(s)
| | - Zila Rubab
- Department of Biochemistry, Ziauddin University, Karachi, Pakistan
| | - Shumaila Usman
- Department of Molecular Medicine, Ziauddin University, Karachi, Pakistan
| | | | - Sadia Arif
- Department of Pathology, Ziauddin University, Karachi, Pakistan
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Usman S, Mushtaq A. Magnetorotational instability in dense electron-positron-ion plasmas. Sci Rep 2023; 13:15315. [PMID: 37714938 PMCID: PMC10504318 DOI: 10.1038/s41598-023-42397-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 09/09/2023] [Indexed: 09/17/2023] Open
Abstract
We in this manuscript analyzed the magnetorotational instability (MRI) by using a multi-component quantum fluid model with the effect of spin magnetization in a differentially rotating degenerate electron-positron-ion (e-p-i) quantum plasma. The electrons and positron having the same mass but opposite charge are taken to be degenerate whereas ions are considered as classical owing to their large inertia. The general dispersion relation is derived and a local dispersion relation for MRI is obtained by applying MHD approximations. To obtained MRI and to analyze the results numerically, reduced dispersion relation is derived using the local approximations. The obtained results are applied to the astrophysical situations exist there in the interiors of White Dwarfs and neutron stars. Contribution from spin magnetization and the number densities of electrons and positrons plays a vital role in the dynamics and can alter the instability. The increase in the electron number density, hence spin magnetization enhances the growth rate of the mode and leads the system to instability which results in the core collapse of certain massive stars.
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Affiliation(s)
- S Usman
- Department of Physics, University of Wah, Wah Cantt, 47010, Pakistan.
| | - A Mushtaq
- Department of Physics, FBAS, International Islamic University (IIUI), Islamabad, 44000, Pakistan
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Akbar N, Anum H, Razzaq SS, Salim A, Usman S, Haneef K. Ascorbic acid and salvianolic acid B enhance the valproic acid and 5-azacytidinemediated cardiac differentiation of mesenchymal stem cells. Mol Biol Rep 2023; 50:7371-7380. [PMID: 37450078 DOI: 10.1007/s11033-023-08634-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/21/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Cardiovascular diseases remain a major cause of death globally. Cardiac cells once damaged, cannot resume the normal functioning of the heart. Bone marrow derived mesenchymal stem cells (BM-MSCs) have shown the potential to differentiate into cardiac cells. Epigenetic modifications determine cell identity during embryo development via regulation of tissue specific gene expression. The major epigenetic mechanisms that control cell fate and biological functions are DNA methylation and histone modifications. However, epigenetic modifiers alone are not sufficient to generate mature cardiac cells. Various small molecules such as ascorbic acid (AA) and salvianolic acid B (SA) are known for their cardiomyogenic potential. Therefore, this study is aimed to examine the synergistic effects of epigenetic modifiers, valproic acid (VPA) and 5-azacytidine (5-aza) with cardiomyogenic molecules, AA and SA in the cardiac differentiation of MSCs. METHODS AND RESULTS BM-MSCs were isolated, propagated, characterized, and then treated with an optimized dose of VPA or 5-aza for 24 h. MSCs were maintained in a medium containing AA and SA for 21 days. All groups were assessed for the expression of cardiac genes and proteins through q-PCR and immunocytochemistry, respectively. Results show that epigenetic modifiers VPA or 5-aza in combination with AA and SA significantly upregulate the expression of cardiac genes MEF2C, Nkx2.5, cMHC, Tbx20, and GATA-4. In addition, VPA or 5-aza pretreatment along with AA and SA enhanced the expression of the cardiac proteins connexin-43, GATA-4, cTnI, and Nkx2.5. CONCLUSION These findings suggest that epigenetic modifiers valproic acid and 5-azacytidine in combination with ascorbic acid and salvianolic acid B promote cardiac differentiation of MSCs. This pretreatment strategy can be exploited for designing future stem cell based therapeutic strategies for cardiovascular diseases.
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Affiliation(s)
- Nukhba Akbar
- Dr. Zafar H. Zaidi Center for Proteomics, University of Karachi, Karachi, 75270, Pakistan
| | - Hira Anum
- Dr. Zafar H. Zaidi Center for Proteomics, University of Karachi, Karachi, 75270, Pakistan
| | - Syeda Saima Razzaq
- Dr. Zafar H. Zaidi Center for Proteomics, University of Karachi, Karachi, 75270, Pakistan
| | - Asmat Salim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Shumaila Usman
- Department of Molecular Medicine, Ziauddin University, Karachi, Pakistan
| | - Kanwal Haneef
- Dr. Zafar H. Zaidi Center for Proteomics, University of Karachi, Karachi, 75270, Pakistan.
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Rizvi SFA, Wasim B, Usman S, Borges KJJ, Sahibdad I, Salim A, Khan I. Zinc and hypoxic preconditioning: a strategy to enhance the functionality and therapeutic potential of bone marrow-derived mesenchymal stem cells. Mol Cell Biochem 2022; 477:2735-2749. [PMID: 35610401 DOI: 10.1007/s11010-022-04468-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 05/04/2022] [Indexed: 11/09/2022]
Abstract
The therapeutic use of bone marrow mesenchymal stem cells (BM-MSCs) requires a large number of cells (1-100 × 106 cells/kg of body weight). Extensive in vitro growth is limited due to the aging of cultured BM-MSCs which leads to abnormal morphology and senescence. Hypoxia increases BM-MSC proliferation, but the question of whether hypoxia preconditioning is safe for clinical application of BM-MSCs remains to be answered. Zinc is essential for cell proliferation and differentiation, especially for the regulation of DNA synthesis and mitosis. It is a structural constituent of numerous proteins on a molecular level, including transcription factors and enzymes of cellular signaling machinery. All the tissues, fluids, and organs of the human body contain zinc. More than 95% of zinc is intracellular, of which 44% is involved in the transcription of DNA. We investigated the effects of ZnCl2 on proliferation, morphology, migration, population doubling time (PDT), and gene expression of BM-MSCs under hypoxic (1% O2) and normoxic (21% O2) environments. BM-MSCs were preconditioned with optimized concentrations of ZnCl2 under normoxic and hypoxic environments and further examined for morphology by the phase-contrast inverted microscope, cell proliferation by MTT assay, PDT, cell migration ability, and gene expression analysis. Zinc significantly enhanced the proliferation of BM-MSCs, and it decreases PDT under hypoxic and normoxic environments as compared to control cells. Migration of BM-MSCs toward the site of injury increased and expression of HIF1-α significantly decreased under hypoxic conditions as compared to non-treated hypoxic cells and control. At late passages (P9), the morphology of normoxic BM-MSCs was transformed into large, wide, and flat cells, and they became polygonal and lost their communication with other cells. Conversely, zinc-preconditioned BM-MSCs retained their spindle-shaped, fibroblast-like morphology at P9. The expression of proliferative genes was found significantly upregulated, while downregulation of genes OCT4 and CCNA2 was observed in zinc-treated BM-MSCs under both normoxic and hypoxic conditions. ZnCl2 treatment can be used for extensive expansion of BM-MSCs in aged populations to obtain a large number of cells required for systemic administration to produce therapeutic efficacy.
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Affiliation(s)
- Syed Faizan Ali Rizvi
- Ghulam Muhammad Mahar Medical College Sukkur at Shaheed Mohtarma Benazir Bhutto Medical University Larkana, Larkana, 77150, Pakistan.,Ziauddin University, Clifton, Karachi, 74700, Pakistan
| | - Bushra Wasim
- Ziauddin University, Clifton, Karachi, 74700, Pakistan
| | | | | | - Iqra Sahibdad
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Centre for Chemical and Biological Sciences, Karachi, 75270, Pakistan
| | - Asmat Salim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Centre for Chemical and Biological Sciences, Karachi, 75270, Pakistan
| | - Irfan Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Centre for Chemical and Biological Sciences, Karachi, 75270, Pakistan. .,Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan.
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Usman S, Imad R, Nisar U, Khan I, Abbas G. Pre-weaning fluoxetine exposure caused anti-depressant like behavior at adulthood via perturbing tryptophan metabolism in rats. Metab Brain Dis 2022; 37:1415-1422. [PMID: 35303245 DOI: 10.1007/s11011-022-00951-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/08/2022] [Indexed: 10/18/2022]
Abstract
The perinatal depression exposes the child to antidepressants during vulnerable window of development, which can chronically impact the mental wellbeing of new born. Active pharmaceuticals are not tested for this long term neurobehavioral aspect of toxicity during drug development process. Keeping this in view, the current study was designed to study the effect of pre-weaning fluoxetine exposure on depression-like behavior of the offspring upon attaining adulthood using FST (Forced swim test). Additionally, the brain tryptophan, 5-HT (5-hydroxytryptamine) and its metabolite 5-HIAA (5-hydroxyindoleacetic acid) levels were quantified using Enzyme linked Immunosorbent Assay (ELISA), while expression of SERT (serotonin receptor), 5-HT1A receptor, TPH (tryptophan hydroxylase) genes were monitored using qPCR. Our data showed that pre-weaning fluoxetine (10, 50 or 100 mg/kg) exposure decreased depression-like behavior. The 5-HT and 5-HIAA levels showed declining trend. However, the 5-HT synthetic precursor i.e. tryptophan levels were found to be significantly elevated in both brain and plasma as compared to control rats. The gene expression study did not reveal any significant alterations as compared to control. In conclusion, the present study demonstrate that pre-weaning fluoxetine exposure decreased depression-like behavior upon adulthood via perturbing tryptophan metabolism.
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Affiliation(s)
- Shumaila Usman
- Department of Research, Ziauddin University, Karachi, Pakistan
| | - Rehan Imad
- Department of Research, Ziauddin University, Karachi, Pakistan
| | - Uzair Nisar
- Department of Pharmacology, Faculty of Pharmacy, Ziauddin University, Karachi, Pakistan
| | - Irfan Khan
- Dr. Panjwani Center for Molecular Medicine & Drug Research, ICCBS, University of Karachi, Karachi, Pakistan
| | - Ghulam Abbas
- Department of Pharmacology, Faculty of Pharmacy, Ziauddin University, Karachi, Pakistan.
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Usman S, Meludu S, Dioka C, Onyema-Iloh O, Obi-Ezeani C, Onuora I. T064 Impact of cardiovascular exercise training on apolipoproteins and atherogenic indices of adult Nigerians. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.531] [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: 11/03/2022]
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Zhang X, Guo X, Li F, Usman S, Zhang Y, Ding Z. Antioxidant, Flavonoid, α-tocopherol, β-carotene, Fatty Acids, and Fermentation Profiles of Alfalfa Silage Inoculated With Novel Lactiplantibacillus Plantarum and Pediococcus acidilactici Strains With High-antioxidant Activity. Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115301] [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: 11/29/2022]
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Zehra D, Memon Z, Usman S, Jabeen A, Ismail K, Siddiqui RA. Low Dose of Azithromycin Enhances the Anticancer Efficacy of Sorafenib in HepG2 Cell Line. PAK J ZOOL 2022. [DOI: 10.17582/journal.pjz/20201015211002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Munir MA, Anjum KM, Javid A, Khan N, Jianming C, Naseer J, Anjum A, Usman S, Shahzad M, Hafeez S, Hussain T, Saeed A, Badeni AH, Mansoor MK, Hussain I. Sublethal toxicity of carbofuran in cattle egret (Bubulcus ibis coromandus): hematological, biochemical, and histopathological alterations. BRAZ J BIOL 2022; 84:e255055. [PMID: 35019107 DOI: 10.1590/1519-6984.255055] [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: 08/05/2021] [Accepted: 09/22/2021] [Indexed: 11/22/2022] Open
Abstract
This study was aimed to investigate Carbofuran (CF)-induced pathological changes in cattle egret. Two hundred cattle egrets were reared and equally divided into four groups and given different CF concentrations (0.03 mg/L, 0.02 mg/L, 0.01 mg/L and 0 mg/L (control group)). Hematology, serum biochemistry, histopathology, and immunological markers were studied. Our results confirm that CF induces anemic conditions, leukocytosis, elevated liver enzymatic activity, and alterations in renal biomarkers. Moreover, specific microscopic lesions such as multifocal necrosis, pyknotic nuclei, hemorrhages, congestion, and inflammatory cell proliferation were observed in the liver, kidney, spleen, and thymus. These findings suggest that CF can induce harmful effects, so the application of this pesticide in the field must be strictly monitored to mitigate the possibility of exposure to non-target species.
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Affiliation(s)
- M A Munir
- University of Veterinary and Animal Sciences, Department of Wildlife & Ecology, Ravi Campus, Pattoki, Pakistan
| | - K M Anjum
- University of Veterinary and Animal Sciences, Department of Wildlife & Ecology, Ravi Campus, Pattoki, Pakistan
| | - A Javid
- University of Veterinary and Animal Sciences, Department of Wildlife & Ecology, Ravi Campus, Pattoki, Pakistan
| | - N Khan
- University of Veterinary and Animal Sciences, Department of Fisheries & Aquaculture, Ravi Campus, Pattoki, Pakistan
| | - C Jianming
- Minjiang University, Institute of Oceanography, Fuzhou, China
| | - J Naseer
- The Islamia University of Bahawalpur, Department of Forestry, Range and Wildlife Management, Bahawalpur, Pakistan
| | - A Anjum
- The Islamia University of Bahawalpur, Faculty of Veterinary and Animal Sciences, Department of Pathology, Bahawalpur, Pakistan
| | - S Usman
- University of Veterinary and Animal Sciences, Faculty of Veterinary and Animal Sciences, Department of Pathology, Lahore, Pakistan
| | - M Shahzad
- The Islamia University of Bahawalpur, Faculty of Veterinary and Animal Sciences, Department of Pathology, Bahawalpur, Pakistan
| | - Shahid Hafeez
- University of Agriculture Faisalabad, Department of Forestry and Range Management, Faisalabad, Pakistan
| | - T Hussain
- The Islamia University of Bahawalpur, Department of Forestry, Range and Wildlife Management, Bahawalpur, Pakistan
| | - A Saeed
- The Islamia University of Bahawalpur, Department of Forestry, Range and Wildlife Management, Bahawalpur, Pakistan
| | - A H Badeni
- University of Veterinary and Animal Sciences, Department of Wildlife & Ecology, Ravi Campus, Pattoki, Pakistan
| | - M K Mansoor
- The Islamia University of Bahawalpur, Faculty of Veterinary and Animal Sciences, Department of Microbiology, Bahawalpur, Pakistan
| | - I Hussain
- Bahauddin Zakariya University, Department of Pathobiology, Multan, Pakistan
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Rasheed N, Waseem B, Haneef K, Usman S, Sadiq M, Urooj T, Tarique S, Zeha D. A Comparative Analysis of Wound Healing Potential, Cell Viability and Morphology of Normal and Gestational Diabetic Affected Wharton’s Jelly Derived Mesenchymal Stem Cells. PAK J ZOOL 2022. [DOI: 10.17582/journal.pjz/20201012081021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Roghay MA, Hassan N, Usman S, Shah SNN, Borges KJJ, Haneef K. Human Patellar Bone Dust has Osteogenic Potential: An in vitro Study. JPRI 2021. [DOI: 10.9734/jpri/2021/v33i52a33580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Aims: To substantiate the osteogenic differentiation of human Umbilical cord Mesenchymal Stem Cells (hUMSCs) under the influence of Bone Dust (BD) by detecting expression of genes RUNX2 and IBSP in the differentiated cells.
Study Design: In vitro study.
Place and Duration of Study: MDRL Cell Culture Lab Ziauddin University and Dr.Zafar H.Zaidi Institute of Proteomics, University of Karachi, between July 2020 and July 2021.
Methodology: We designed an innovative experiment to differentiate hUMSCs into osteoblasts under the influence of BD, without using any conventional differentiating medium. The hUMSCs were isolated from umbilical cord and cultured in a 6-well plate with 3μm inserts, in which BD was lodged, preventing direct contact of BD with hUMSCs. The plates with hUMSCs and BD-filled inserts were incubated at 37°C for 14 days after which RNA extraction, cDNA synthesis and qPCR for two genes was performed. Expression of Runt-related transcription factor-2(RUNX2) and Integrin-binding Sialoprotein (IBSP) were quantified.
Results: Results revealed an increased expression of the late osteogenic marker IBSP(p=0.01) signifying that the hUMSCs had undergone differentiation into mature osteoblasts.
Conclusion: This novel experiment identifies BD as a new source for osteogenic differentiation of hUMSCs in in vitro experiments.
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16
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Zehra D, Usman S, Ismail K, Hasan SS, Zafar U, Rizvi SFA, Rasheed N. Inhibitory Potential of Combination of Macrolide Antibiotic with Conventional Chemotherapeutic Agent Sorafenib on Growth Rate of Cancer Cell Population. JPRI 2021. [DOI: 10.9734/jpri/2021/v33i47b33124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Over the past few years great progress has been achieved in anticancer therapy, but development of resistance and unavoidable side effects have incapacitated these fulfilments. Keeping in view this demanding condition, numerous drugs with unique antitumor mechanisms are under investigations including antimicrobials which have been shown to possess anti-inflammatory, immunomodulatory and cytotoxic effects. In this regard, both conventional and novel antimicrobials are being studied to explore their anticancer potential along with underlying mechanisms which may render them as effective anticancer drugs in near future. Moreover, the new approach of drug repurposing is also being encouraged especially in cancers in order to reduce cost and limit adverse effects. In recent times a cumulative number of studies have laid stress upon the antitumor properties of antimicrobials. Consequently, this study has been conducted to see comparative inhibitory effect of Sorafenib and its combination with a macrolide antibiotic Azithromycin on growth rate HepG2 cell line.
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Akyurek T, Shoaib S, Usman S. Delayed fast neutron as an indicator of burn-up for nuclear fuel elements. Nuclear Engineering and Technology 2021. [DOI: 10.1016/j.net.2021.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
Background The tumor necrosis factor receptor superfamily, member 4 (OX40) and its ligand (OX40L) are members of the tumor necrosis factor superfamily and play roles as costimulatory immunomodulators to combat infectious diseases as well as cancers. Presently, many therapeutic agents focused on OX40 and OX40L are in trials for antitumor efficacy. In Pakistan, oral squamous cell carcinoma (OSCC) is the second most prevalent cancer with a mortality of 50% despite the availability of various therapeutic modalities. Data regarding serum levels of OX40 in patients with OSCC is lacking. Therefore, the study aimed to assess the OX40 levels in serum and their association with the clinicopathological features of the tumor. Methodology A cross-sectional study was conducted and serum samples of 78 biopsy-confirmed OSCC patients were collected prior to any treatment along with 10 healthy persons after informed consent. Serum levels of OX40 were measured via sandwich enzyme-linked immunosorbent assay (ELISA). Results The mean serum levels of OX40 were 1.65 ± 0.64 ng/ml and 2.39 ± 0.58 ng/ml in early and late-stage disease patients of OSCC, respectively (p =<0.005). However, based on gender and tumor site, male gender and buccal mucosa tumors in late-stage OSCC patients showed higher mean levels of OX40, 2.42± 0.58 ng/ml and 2.41 ± 0.58 ng/ml (p =<0.05), respectively. Patients with well-differentiated tumors demonstrated mean serum levels of 2.28 ng/ml, and in moderately differentiated tumors, the mean levels were 2.19 ng/ml (p =0.47). Conclusions A high OX40 level is associated with advanced-stage disease and a poor prognosis, possibly reflecting the immune-exhausted status against OSCC.
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Affiliation(s)
| | - Zil E Rubab
- Biochemistry, Ziauddin University, Karachi, PAK
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19
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Bhowmik PK, Schlegel JP, Kalra V, Mills C, Usman S. Design of Condensation Heat Transfer Experiment to Evaluate Scaling Distortion in Small Modular Reactor Safety Analysis. Journal of Nuclear Engineering and Radiation Science 2021. [DOI: 10.1115/1.4050211] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract
Designing a novel scaled modular test facility as a part of an experiment for condensation heat transfer (CHT) in small modular reactors (SMRs) is the main focus of this study. This facility will provide data to evaluate models' scalability for predicting heat transfer in the passive containment cooling system (PCCS) of SMR. The nuclear industry recognizes SMRs as future candidates for clean, economic, and safe energy generation. However, licensing requires proper evaluation of the safety systems such as PCCS. The knowledge gap from the literature review showed a lack of high-resolution experimental data for scaling of PCCS and validation of computational fluid dynamics tools. In addition, the presently available test data are inconsistent due to unscaled geometric and varying physics conditions. These inconsistencies lead to inadequate test data benchmarking. To fill this research gap, this study developed three scaled (different diameters) condensing test sections with annular cooling for scale testing and analysis. This facility considered saturated steam as the working fluid with noncondensable gases like nitrogen and helium in different mass fractions. This facility also used a precooler unit for inlet steam conditioning and a postcooler unit for condensate cooling. The high fidelity sensors, instruments, and data acquisition systems are installed and calibrated. Finally, facility safety analysis and shakedown tests are performed.
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Affiliation(s)
- Palash K. Bhowmik
- Department of Nuclear Engineering and Radiation Science, Missouri University of Science and Technology Rolla, Rolla, MO 65401
| | - J. P. Schlegel
- Department of Nuclear Engineering and Radiation Science, Missouri University of Science and Technology Rolla, Rolla, MO 65401
| | - V. Kalra
- Department of Nuclear Engineering and Radiation Science, Missouri University of Science and Technology Rolla, Rolla, MO 65401
| | - C. Mills
- Department of Nuclear Engineering and Radiation Science, Missouri University of Science and Technology Rolla, Rolla, MO 65401
| | - S. Usman
- Department of Nuclear Engineering and Radiation Science, Missouri University of Science and Technology Rolla, Rolla, MO 65401
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20
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Nadeem , Siddiqui RA, Usman S, Nisar U, Abbas G. Pre-weaning fluoxetine exposure perturbs social behavior at adulthood via altering hippocampal morphometry and PSD-95 expression in rats. Pak J Pharm Sci 2021; 34:795-802. [PMID: 34275817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The depression during and after pregnancy cause significant exposure of fluoxetine to the child at early life through mother. This exposure to the child, during the vulnerable window of development, can have a long lasting impact on overall mental wellbeing. Long term neurobehavioral aspect of developmental toxicity is neglected as the part of testing requirements in the process of drug developmental. In this context, the present study was designed to study the possible effect of pre-weaning fluoxetine exposure on the social behavior of rats upon adulthood followed by assessing hippocampal morphometry (hematoxylin-eosin and silver staining) and post-synaptic density protein 95 (PSD-95) expression (using qPCR). Our data showed that the fluoxetine exposure (10, 50 and 100mg/kg) caused predominant increase in the social behavior of rats; the effect more pronounced in female rats. The morphometric analysis revealed significant increase in cell population and count of dentate gyrus (DG) region of hippocampus along with enhanced dendritic arborization. Furthermore, the PSD-95 expression was found to be down regulated in the fluoxetine treated group as compared to control. In conclusion, the present study demonstrate that the early post-natal exposure to fluoxetine cause hypersociability upon attaining adulthood, which may be attributed to enhanced neuronal proliferation and decrease PSD-95 expression in the hippocampus.
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Affiliation(s)
- - Nadeem
- Department of Pharmacology, Faculty of Pharmacy, Ziauddin University, Karachi, Pakistan/ Institute of Pharmacy, Shaheed Mohtarma Benazir Bhutto Medical University, Larkana, Pakistan
| | | | - Shumaila Usman
- Department of Research, Ziauddin University, Karachi, Pakistan
| | - Uzair Nisar
- Department of Pharmacology, Faculty of Pharmacy, Ziauddin University, Karachi, Pakistan
| | - Ghulam Abbas
- Department of Pharmacology, Faculty of Pharmacy, Ziauddin University, Karachi, Pakistan
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Li F, Ding Z, Chen X, Zhang Y, Ke W, Zhang X, Li Z, Usman S, Guo X. The effects of Lactobacillus plantarum with feruloyl esterase-producing ability or high antioxidant activity on the fermentation, chemical composition, and antioxidant status of alfalfa silage. Anim Feed Sci Technol 2021. [DOI: 10.1016/j.anifeedsci.2021.114835] [Citation(s) in RCA: 2] [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: 10/22/2022]
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22
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Sani AI, Zil-e-Rubab, Usman S, Ahmed SZ, Hosein M. Role of OX40 and its ligand as costimulatory modulators in cancer immunotherapy. AIMS Molecular Science 2021. [DOI: 10.3934/molsci.2021012] [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: 11/18/2022] Open
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23
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Baloch K, Mugheri D, Soomro AM, Bhatti WS, Khan M, Wassan SM, Usman S, Nisar U, Malhani WA, Baloch N, Mangi AA, Lashari S, Arbani RA, Alolyan SO, Arain SP, Alshahrani SM. Assessment of Neonatal Respiratory Distress Incidences with Causes, Mortality and Morbidity in a Tertiary Care Hospital. JPRI 2020. [DOI: 10.9734/jpri/2020/v32i2730849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background: The objective of this study conducted in a neonatal intensive care unit of a tertiary care hospital Larkana was to check the prevalence of respiratory distress in neonates and their morbidity and mortality associated with respiratory distress.
Methods: A retrospective analysis of neonates with the respiratory distress syndrome during the period of one year was evaluated. The prevalence, risk factors related with respiratory distress syndrome were compared on the basis of neonatal and maternal factors.
Results: The Majority of respiratory distress in our study, were due to Transient Tachypnea of newborn (TTN) 29.8%, RDS 22.1%, birth asphyxia 17%, and Meconium Aspiration Syndrome (MAS) 15.7%. Overall outcome of Neonatal Respiratory Distress was cure rate in 65.4%, Neonatal mortality rate 26.84% with highest mortality due to RDS and Sepsis and the morbidity rate is 7.7%. Conclusion: The TTN was the most common cause of respiratory distress in neonates. Mortality rate was 26.84% and was highest among the neonates with respiratory distress syndrome.
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Anjum A, Usman S, Aslam A, Faiz M, Usman S, Imran MS, Hussain I, Usman M, Badar S, Iqbal MZ, Dar A, Haq HMA. Prevalence and molecular detection of contagious bovine pleuropneumonia in large ruminants in Punjab, Pakistan. Trop Biomed 2020; 37:273-281. [PMID: 33612797] [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
Contagious bovine pleuropneumonia (CBPP) is a highly contagious disease of cattle caused by Mycoplasma mycoides subsp. mycoides. It is characterized by anorexia, fever, dyspnea, polypnea, cough, and nasal discharges. Gross lesions in the lung such as marbling, sequestra, thickening of interlobular septa, and consolidation are evident. Serological tests including complement fixation test and competitive enzyme-linked immunosorbent assay and molecular tests such as polymerase chain reactions are used for diagnostic purposes. In this study, lung samples of suspected large ruminants (cattle n=560, buffalo n=293) were collected from abattoirs of three districts of Punjab namely Lahore, Kasur and Jhang. PCR was performed with specific primers, targeting the 16S ribosomal RNA gene to detect the positive cases. The results indicated that 49 samples (8.75%) of cattle were positive, with maximum prevalence was observed in Jhang with 16 positive samples (10.06%), but CBPP was not detected in any buffalo sample. High prevalence of disease was seen in cattle of more than seven years of age, in female cattle, and in cross-bred cattle. Age and gender were found significantly associated (P<0.05) with the prevalence of the disease. Gene sequencing of identified 5 isolates of Mycoplasma mycoides subsp. mycoides had more than 99% similarities with the strains isolated from China, Italy, Australia and Tanzania and were categorized into a monophyletic group but strain isolated from Portugal had more than 55% variable regions, hence clustered separately. This study confirms the presence of contagious bovine pleuropneumonia in the country which can be a threat to the livestock export market and warrants the implementation of control measures to mitigate the economic losses associated with the disease.
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Affiliation(s)
- A Anjum
- Department of Pathology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - S Usman
- Department of Pathology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - A Aslam
- Department of Pathology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - M Faiz
- King Edward Medical University, Lahore, Pakistan
| | - S Usman
- Nishtar Medical University, Multan, Pakistan
| | - M S Imran
- Department of Pathology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - I Hussain
- Department of Pathology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - M Usman
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - S Badar
- Livestock and Dairy Development Department Punjab, Pakistan
| | - M Z Iqbal
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - A Dar
- Foot and Mouth Disease Research Center, Veterinary Research Institute, Lahore, Pakistan
| | - H M A Haq
- Poultry Research Institute, Rawalpindi, Pakistan
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Dall'Asta A, Girardelli S, Usman S, Lawin-O'Brien A, Paramasivam G, Frusca T, Lees CC. Etiology and perinatal outcome of periviable fetal growth restriction associated with structural or genetic anomaly. Ultrasound Obstet Gynecol 2020; 55:368-374. [PMID: 31180600 DOI: 10.1002/uog.20368] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/25/2019] [Accepted: 05/31/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To investigate the etiology and perinatal outcome of periviable fetal growth restriction (FGR) associated with a structural defect or genetic anomaly. METHODS This was a retrospective study of singleton pregnancies seen at a referral fetal medicine unit between 2005 and 2018, in which FGR (defined as fetal abdominal circumference ≤ 3rd percentile for gestational age) was diagnosed between 22 + 0 and 25 + 6 weeks of gestation. The study group included pregnancies with periviable FGR associated with a genetic or structural anomaly (anomalous FGR), while the control group consisted of structurally and genetically normal pregnancies with periviable FGR (non-anomalous FGR). Results of genetic testing, TORCH screen and postmortem examination, as well as perinatal outcome, were investigated. RESULTS Of 255 pregnancies complicated by periviable FGR, 188 were eligible; of which 52 (28%) had anomalous FGR and 136 (72%) had non-anomalous FGR. A confirmed genetic abnormality accounted for 17/52 cases (33%) of anomalous FGR, with trisomy 18 constituting over 50% (9/17; 53%). The most common structural defects associated with FGR were central nervous system abnormalities (13/35; 37%). Overall, 12 (23%) cases of anomalous FGR survived the neonatal period. No differences were found in terms of perinatal survival between pregnancies with anomalous and those with non-anomalous FGR. CONCLUSIONS Most pregnancies complicated by anomalous FGR were associated with a structural defect. The presence of an associated genetic defect was invariably lethal, while those with a structural defect, in the absence of a confirmed genetic abnormality, survived into infancy in over 90% of cases, with an overall one in three chance of perinatal survival. These data can be used for counseling prospective parents. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- A Dall'Asta
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
- Department of Metabolism, Digestion and Reproduction, Institute of Reproductive and Developmental Biology, Imperial College London, London, UK
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - S Girardelli
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
- Obstetrics and Gynaecology, San Raffaele Hospital, Vita e Salute University, Milan, Italy
| | - S Usman
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - A Lawin-O'Brien
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - G Paramasivam
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - T Frusca
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - C C Lees
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
- Department of Metabolism, Digestion and Reproduction, Institute of Reproductive and Developmental Biology, Imperial College London, London, UK
- Department of Development & Regeneration, KU Leuven, Leuven, Belgium
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Kahrs BH, Usman S, Ghi T, Youssef A, Torkildsen EA, Lindtjørn E, Østborg TB, Benediktsdottir S, Brooks L, Harmsen L, Salvesen KÅ, Lees CC, Eggebø TM. Descent of fetal head during active pushing: secondary analysis of prospective cohort study investigating ultrasound examination before operative vaginal delivery. Ultrasound Obstet Gynecol 2019; 54:524-529. [PMID: 31115115 DOI: 10.1002/uog.20348] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVES To investigate if descent of the fetal head during active pushing is associated with duration of operative vaginal delivery, mode of delivery and neonatal outcome in nulliparous women with prolonged second stage of labor. METHODS This was a prospective cohort study of nulliparous women with prolonged second stage of labor, conducted between November 2013 and July 2016 in five European countries. Fetal head descent was measured using transperineal ultrasound. Head-perineum distance (HPD) was measured between contractions and on maximum contraction during active pushing, and the difference between these values (ΔHPD) was calculated. The main outcome was duration of operative vaginal delivery, estimated using survival analysis to calculate hazard ratios (HRs) for vaginal delivery, with values > 1 indicating a shorter duration. HR was adjusted for prepregnancy body mass index, maternal age, induction of labor, augmentation with oxytocin and use of epidural analgesia. Pregnancies were grouped according to ΔHPD quartile, and delivery mode and neonatal outcome were compared between groups. RESULTS The study population comprised 204 women. Duration of vacuum extraction was shorter with increasing ΔHPD. Estimated mean duration was 10.0, 9.0, 8.8 and 7.5 min in pregnancies with ΔHPD in the first to fourth quartiles, respectively, and the adjusted HR for vaginal delivery, using increasing ΔHPD as a continuous variable, was 1.04 (95% CI, 1.01-1.08). Mean ΔHPD was 7 mm (range, -10 to 37 mm). ΔHPD was either negative or ≤ 2 mm in the lowest quartile. In this group, 7/50 (14%) pregnancies were delivered by Cesarean section, compared with 8/154 (5%) of those with ΔHPD > 2 mm (P < 0.05). There was no significant association between umbilical artery pH < 7.10 or 5-min Apgar score < 7 and ΔHPD quartile. CONCLUSION Minimal or no fetal head descent during active pushing was associated with longer duration of operative vaginal delivery and higher frequency of Cesarean section in nulliparous women with prolonged second stage of labor. © 2019 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of the International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- B H Kahrs
- National Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - S Usman
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - T Ghi
- Parma University Hospital, Parma, Italy
| | - A Youssef
- St Orsola Malpighi University Hospital, Bologna, Italy
| | - E A Torkildsen
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
| | - E Lindtjørn
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
| | - T B Østborg
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
| | - S Benediktsdottir
- Department of Obstetrics and Gynecology, Clinical Sciences, Lund University, Lund, Sweden
- Department of Obstetrics and Gynecology, Landspitali University Hospital, Reykjavik, Iceland
| | - L Brooks
- Hvidovre University Hospital, Copenhagen, Denmark
| | - L Harmsen
- Hvidovre University Hospital, Copenhagen, Denmark
| | - K Å Salvesen
- National Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - C C Lees
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - T M Eggebø
- National Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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Almutairi B, Akyurek T, Usman S. Voltage dependent pulse shape analysis of Geiger-Müller counter. Nuclear Engineering and Technology 2019. [DOI: 10.1016/j.net.2019.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Usman S, Smith L, Brown N, Major V. Diagnostic accuracy of Magnetic Resonance Imaging using liver tissue specific contrast agents and contrast enhanced Multi Detector Computed Tomography: A systematic review of diagnostic test in Hepatocellular Carcinoma (HCC). Radiography (Lond) 2018; 24:e109-e114. [PMID: 30292515 DOI: 10.1016/j.radi.2018.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 11/03/2017] [Revised: 04/30/2018] [Accepted: 05/04/2018] [Indexed: 01/15/2023]
Abstract
OBJECTIVES The aim of this systematic review is to investigate diagnostic accuracy of Magnetic Resonance Imaging (MRI) scans using liver specific tissue contrast media over contrast enhanced Multi Detector CT (MDCT) in diagnoses of Hepatocellular Carcinoma (HCC) in patients with chronic liver disease. KEY FINDINGS A total of 8 diagnostic studies were identified and generally considered of high quality. The studies reported sufficient evidence on sensitivity and specificity, which was synthesised and summarised providing an overview of the evidence. Findings indicate that MRI scans using liver specific tissue contrast have a better diagnostic performance compared to contrast enhanced MDCT in diagnostic work-up of HCC in patients with chronic liver disease. CONCLUSION The current review identified sufficient high quality studies reporting statistical difference (P < 0.05), to establish the superiority of gadoxetetic acid enhanced MRI for sensitivity and specificity in comparison to MDCT in the diagnosis of HCC in chronic liver disease.
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Affiliation(s)
- S Usman
- London Northwest NHS Trust, Flat 80 Grand Union Heights, Northwick Road, Wembley, HA0 1LF, United Kingdom.
| | - L Smith
- Medical Imaging and Radiation Sciences, Allied Health Professions and Midwifery, School of Health and Social Work University of Hertfordshire, College Lane, Hatfield, AL10 9AB, United Kingdom.
| | - N Brown
- Department of Allied Health and Midwifery School of Health & Social Work University of Hertfordshire, College Lane, Hatfield, Herts, AL10 9AB, United Kingdom.
| | - V Major
- School of Health and Social Work, University of Hertfordshire, College Lane, Hatfield, Herts, AL10 9AB, United Kingdom.
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Abstract
Objective: Vaginal examination is widely used to assess the progress of labor; however, it is subjective and poorly reproducible. We aim to assess the feasibility and accuracy of transabdominal and transperineal ultrasound compared to vaginal examination in the assessment of labor and its progress. Methods: Women were recruited as they presented for assessment of labor to a tertiary inner city maternity service. Paired vaginal and ultrasound assessments were performed in 192 women at 24-42 weeks. Fetal head position was assessed by transabdominal ultrasound defined in relation to the occiput position transformed to a 12-hour clock face; fetal head station defined as head-perineum distance by transperineal ultrasound; cervical dilatation by anterior to posterior cervical rim measurement and caput succedaneum by skin-skull distance on transperineal ultrasound. Results: Fetal head position was recorded in 99.7% (298/299) of US and 51.5% (154/299) on vaginal examination (p < .0001 1 ). Bland-Altman analysis showed 95% limits of agreement, -5.31 to 4.84 clock hours. Head station was recorded in 96.3% (308/320) on vaginal examination (VE) and 95.9% (307/320) on US (p = .79 1 ). Head station and head perineum distance were negatively correlated (Spearman's r = -.57, p < .0001). 54.4% (178/327) of cervical dilatation measurements were determined using US and 100% on VE/speculum (p < .0001). Bland-Altman analysis showed 95% limits of agreement -2.51-2.16 cm. The presence of caput could be assessed in 98.4% (315/320) of US and was commented in 95.3% (305/320) of VEs, with agreement for the presence of caput of 76% (p < .05). Fetuses with caput greater than 10 mm had significantly lower head station (p < .0001). Conclusions: We describe comprehensive ultrasound assessments in the labor room that could be translated to the assessment of women in labor. Fetal head position is unreliably determined by vaginal examination and agrees poorly with US. Head perineum distance has a moderate correlation with fetal head station in relation to the ischial spines based on vaginal examination. Cervical dilatation is not reliably assessed by ultrasound except at dilatations of less than 4 cm. Caput is readily quantifiable by ultrasound and its presence is associated with lower fetal head station. Transabdominal and transperineal ultrasound is feasible in the labor room with an accuracy that is generally greater than vaginal examinations.
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Affiliation(s)
- S Usman
- a Imperial College Healthcare NHS Trust , London , UK.,b Imperial College London, Institute of Reproductive Developmental Biology , London , UK
| | - M Wilkinson
- b Imperial College London, Institute of Reproductive Developmental Biology , London , UK
| | - H Barton
- b Imperial College London, Institute of Reproductive Developmental Biology , London , UK
| | - C C Lees
- a Imperial College Healthcare NHS Trust , London , UK.,b Imperial College London, Institute of Reproductive Developmental Biology , London , UK
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Richardson B, King J, Alajo A, Usman S, Giraldo CHC. Modeling and Validation of Temperature and Void Effects on Reactivity Experiments at the Missouri S&T Research Reactor. NUCL SCI ENG 2017. [DOI: 10.1080/00295639.2017.1292089] [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: 10/19/2022]
Affiliation(s)
- B. Richardson
- Missouri University of Science and Technology, Nuclear Engineering, 301 W. 14th Street, Rolla, Missouri 65409
| | - J. King
- Colorado School of Mines, Nuclear Science and Engineering, Golden, Colorado 80401
| | - A. Alajo
- Missouri University of Science and Technology, Nuclear Engineering, 301 W. 14th Street, Rolla, Missouri 65409
| | - S. Usman
- Missouri University of Science and Technology, Nuclear Engineering, 301 W. 14th Street, Rolla, Missouri 65409
| | - C. H. C. Giraldo
- Missouri University of Science and Technology, Nuclear Engineering, 301 W. 14th Street, Rolla, Missouri 65409
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Affiliation(s)
- S. Usman
- University of Missouri-Rolla 225 Fulton Hall, 1870 Miner Circle, Rolla, Missouri 65409-0170
| | - B. S. Mohammad
- University of Missouri-Rolla 225 Fulton Hall, 1870 Miner Circle, Rolla, Missouri 65409-0170
| | - S. Abdallah
- University of Cincinnati, Cincinnati, Ohio 45219-0070
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Affiliation(s)
- S. Usman
- University of Missouri-Rolla, 225 Fulton Hall, Rolla, Missouri 65409
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Usman S, Khan I, Naeem N, Iqbal H, Ali A, Usman S, Salim A. Conditioned media trans-differentiate mature fibroblasts into pancreatic beta-like cells. Life Sci 2016; 164:52-59. [PMID: 27593573 DOI: 10.1016/j.lfs.2016.08.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/22/2016] [Accepted: 08/31/2016] [Indexed: 10/21/2022]
Abstract
AIM The study was carried out to evaluate the role of preconditioning strategies on the trans-differentiation of mature fibroblasts (NIH3T3 cells) into insulin producing β-cells. METHODS The NIH3T3 cells were treated with dexamethasone (5μM) and pancreatic extract (0.05 and 0.4mg/mL) separately or in combination. The treated cells were analyzed for the morphological changes, and expression of pancreatic genes and proteins by phase contrast microscopy, RT-PCR and flow cytometry/immunocytochemistry, respectively. RESULTS Treatment of mature fibroblasts with different combinations of dexamethasone and pancreatic extract in the form of conditioned media resulted in comparable morphological changes and expression of certain pancreatic genes and proteins; however, their expression varied with each treatment. Most prominent effect was observed in case of combined treatment which resulted in significant increase (p<0.001) in gene expression levels of insulin, MafA, and Ngn3. Variable pattern was observed in insulin, MafA, Ngn3 and Sca1 expressions at the protein level. CONCLUSION It is concluded from this study that preconditioning of NIH3T3 cells with conditioned media containing different combinations of dexamethasone and pancreatic extract can induce trans-differentiation of these cells into pancreatic β-like cells. The conditioned media however, need to be optimized. The study may offer the possibility of improved regeneration of mature cell type that could serve as a future therapeutic option for diabetes.
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Affiliation(s)
- Shumaila Usman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Irfan Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Nadia Naeem
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan; Dow University of Health Sciences, Ojha Campus, Gulzar-e-Hijri,Suparco Road, KDA Scheme-33, Karachi, Pakistan
| | - Hana'a Iqbal
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Anwar Ali
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan; Department of Physiology, University of Karachi, Karachi-75270, Pakistan
| | - Sehrish Usman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Asmat Salim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan.
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Akyurek T, Tucker L, Liu X, Usman S. Portable spectroscopic fast neutron probe and 3 He detector dead-time measurements. Progress in Nuclear Energy 2016. [DOI: 10.1016/j.pnucene.2016.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Waseem M, Khan I, Iqbal H, Eijaz S, Usman S, Ahmed N, Alam G, Salim A. Hypoxic Preconditioning Improves the Therapeutic Potential of Aging Bone Marrow Mesenchymal Stem Cells in Streptozotocin-Induced Type-1 Diabetic Mice. Cell Reprogram 2016; 18:344-355. [PMID: 27500307 DOI: 10.1089/cell.2016.0002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Insulin replacement is the current therapeutic option for type-1 diabetes. However, exogenous insulin cannot precisely represent the normal pattern of insulin secretion. Another therapeutic strategy is transplantation of pancreatic islets, but this is limited by immune rejection, intrinsic complications, and lack of donor availability. Stem cell therapy that results in the regeneration of insulin-producing cells represents an attractive choice. However, with advancing age, stem cells also undergo senescence, which leads to changes in the function of various cellular processes that result in a decrease in the regeneration potential of these aging stem cells. In this study, the effect of young and aging mesenchymal stem cells (MSCs) on the regeneration of pancreatic beta cells in streptozotocin (STZ)-induced type-1 diabetic mice was observed after hypoxic preconditioning. Hypoxia was chemically induced by 2, 4-dinitrophenol (DNP). Plasma insulin and glucose levels were measured at various time intervals, and pancreatic sections were analyzed histochemically. The effect of DNP was also analyzed on apoptosis of MSCs by flow cytometry and on gene expression of certain growth factors by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). We observed that hypoxic preconditioning caused changes in the gene expression levels of growth factors in both young and aging MSCs. Young MSCs showed significant regeneration potential compared with the aging cells in vivo. However, hypoxic preconditioning was able to improve the regeneration potential of aging MSCs. It is concluded from the present study that the regeneration potential of aging MSCs into pancreatic β-cells can be enhanced by hypoxic preconditioning, which causes changes in the gene expression of certain growth factors.
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Affiliation(s)
- Muhammad Waseem
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Irfan Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Hana'a Iqbal
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Sana Eijaz
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Shumaila Usman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Nazia Ahmed
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Gulzar Alam
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Asmat Salim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
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Ali SM, Mehmood CA, Khan B, Jawad M, Farid U, Jadoon JK, Ali M, Tareen NK, Usman S, Majid M, Anwar SM. Stochastic and Statistical Analysis of Utility Revenues and Weather Data Analysis for Consumer Demand Estimation in Smart Grids. PLoS One 2016; 11:e0156849. [PMID: 27314229 PMCID: PMC4912072 DOI: 10.1371/journal.pone.0156849] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 05/22/2016] [Indexed: 11/19/2022] Open
Abstract
In smart grid paradigm, the consumer demands are random and time-dependent, owning towards stochastic probabilities. The stochastically varying consumer demands have put the policy makers and supplying agencies in a demanding position for optimal generation management. The utility revenue functions are highly dependent on the consumer deterministic stochastic demand models. The sudden drifts in weather parameters effects the living standards of the consumers that in turn influence the power demands. Considering above, we analyzed stochastically and statistically the effect of random consumer demands on the fixed and variable revenues of the electrical utilities. Our work presented the Multi-Variate Gaussian Distribution Function (MVGDF) probabilistic model of the utility revenues with time-dependent consumer random demands. Moreover, the Gaussian probabilities outcome of the utility revenues is based on the varying consumer n demands data-pattern. Furthermore, Standard Monte Carlo (SMC) simulations are performed that validated the factor of accuracy in the aforesaid probabilistic demand-revenue model. We critically analyzed the effect of weather data parameters on consumer demands using correlation and multi-linear regression schemes. The statistical analysis of consumer demands provided a relationship between dependent (demand) and independent variables (weather data) for utility load management, generation control, and network expansion.
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Affiliation(s)
- S. M. Ali
- Electrical Engineering Department, COMSATS Institute of IT, Abbottabad, KPK, Pakistan
| | - C. A Mehmood
- Electrical Engineering Department, COMSATS Institute of IT, Abbottabad, KPK, Pakistan
| | - B. Khan
- Electrical Engineering Department, COMSATS Institute of IT, Abbottabad, KPK, Pakistan
| | - M. Jawad
- Electrical Engineering Department, COMSATS Institute of IT, Lahore, Pakistan
| | - U Farid
- Electrical Engineering Department, COMSATS Institute of IT, Abbottabad, KPK, Pakistan
- * E-mail:
| | - J. K. Jadoon
- Electrical Engineering Department, COMSATS Institute of IT, Abbottabad, KPK, Pakistan
| | - M. Ali
- Computer Science Department, COMSATS Institute of IT, Abbottabad, KPK, Pakistan
| | - N. K. Tareen
- Electrical Engineering Department, COMSATS Institute of IT, Abbottabad, KPK, Pakistan
| | - S. Usman
- Electrical Engineering Department, COMSATS Institute of IT, Sahiwal, Pakistan
| | - M. Majid
- Computer Engineering Department, University of Engineering and Technology, Taxila, Pakistan
| | - S. M. Anwar
- Software Engineering Department, University of Engineering and Technology, Taxila, Pakistan
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Yousaf M, Akyurek T, Usman S. A comparison of traditional and hybrid radiation detector dead-time models and detector behavior. Progress in Nuclear Energy 2015. [DOI: 10.1016/j.pnucene.2015.03.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tucker L, Alajo A, Usman S. Thorium-based mixed oxide fuel in a pressurized water reactor: A beginning of life feasibility analysis with MCNP. ANN NUCL ENERGY 2015. [DOI: 10.1016/j.anucene.2014.09.058] [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: 10/24/2022]
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Akyurek T, Tucker L, Usman S. Review and characterization of best candidate isotopes for burnup analysis and monitoring of irradiated fuel. ANN NUCL ENERGY 2014. [DOI: 10.1016/j.anucene.2013.12.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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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40
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Mehmood T, Usman S, Irfan M, Chaudry S, Rashid A. P0039 Preoperative combined chemoradiotherapy for oesophageal or junctional cancers: 10-Year review. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mehmood T, Iqbal H, Usman S, Munawar A, Hussain R, Jamshed A. Gemcitabine Cisplatin With Concurrent Chemoradiation in Locally-Advanced Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1187] [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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Mehmood T, Rashid A, Usman S, Irfan M, Haider I, Rehman K. 5P EGFR GENE MUTATION IN ADVANCED NON-SMALL CELL LUNG CANCER. Lung Cancer 2013. [DOI: 10.1016/s0169-5002(13)70227-7] [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: 11/16/2022]
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43
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Bajwa H, Rehman K, Niazi I, Ali M, Haider I, Usman S, Masood A. PO-251 IMPACT OF BLADDER DISTENSION ON ORGANS AT RISK IN 3D INTRACAVITARY BRACHYTHERAPY FOR GYNECOLOGICAL CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72217-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Richardson B, Castano C, King J, Alajo A, Usman S. Modeling and validation of approach to criticality and axial flux profile experiments at the Missouri S&T Reactor (MSTR). Nuclear Engineering and Design 2012. [DOI: 10.1016/j.nucengdes.2012.01.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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McGinn JT, Usman S, Lapierre H, Pothula VR, Mesana TG, Ruel M. Minimally Invasive Coronary Artery Bypass Grafting: Dual-Center Experience in 450 Consecutive Patients. Circulation 2009; 120:S78-84. [DOI: 10.1161/circulationaha.108.840041] [Citation(s) in RCA: 143] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lear P, Usman S. ESTABLISHING AN INDIGINOUS LIVE DONOR KIDNEY TRANSPLANT PROGRAMME IN NIGERIA. Transplantation 2008. [DOI: 10.1097/01.tp.0000331849.47399.23] [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: 11/25/2022]
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Geranmayeh F, Usman S, Bhutiani R. Jejunal ischaemia-- rare aetiologies and a surgical dilemma. Acta Gastroenterol Belg 2008; 71:263-266. [PMID: 18720940] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Superior Mesenteric Artery thrombosis can lead to acute mesenteric ischaemia with devastating consequences. The main dilemma for the surgeon is the delay in diagnosis and a definitive treatment, as these patients may present with signs of peritonism but not frank peritonitis until the ischaemia results in infarction and or perforation. We report a detailed literature search and a unique case of jejunal ischaemia in the setting of undiagnosed Antiphospholipid Syndrome and Factor V Leiden heterozygosity where a delayed diagnosis resulted in an unnecessary prolongation of patient's morbidity.
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Affiliation(s)
- F Geranmayeh
- Department of surgery, Central Middlesex Hospital, North West London Hospitals NHS trust, London NW10 7NS, UK
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Golshayan A, Choueiri TK, Elson P, Garcia JA, Khaswneh M, Usman S, Tamaskar I, Wood L, Rini BI, Bukowski RM. Clinical factors associated with outcome in metastatic renal cell carcinoma patients treated with VEGF-targeted therapy. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.5046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5046 Background: Therapy targeted against the vascular endothelial growth factor (VEGF) pathway is a standard of care in metastatic renal cell carcinoma (RCC). Identification of clinical features of patients more likely to benefit from these agents would aid in patient selection and interpretation of clinical trial results. Methods: We reviewed 120 metastatic RCC patients receiving bevacizumab, sorafenib, sunitinib or axitinib on one of eight prospective clinical trials at the Cleveland Clinic Taussig Cancer Center. Clinical features associated with outcome were identified by univariate analysis, and then a stepwise modeling approach based on Cox proportional hazards regression was used to identify independent prognostic factors and form a model for progression-free survival (PFS). A bootstrap algorithm was used to provide internal validation. Results: Forty-one patients (34%) achieved an objective response by RECIST criteria (95% C.I. 27–44%). The median PFS for the entire group was 13.8 months (m) (95% C.I. 10.7–19.0 m). Multivariate analysis identified the following independent adverse prognostic factors (PF) for PFS: time from diagnosis to current treatment <2 years, baseline platelet count >300 K/μL, baseline neutrophil count >4.5 K/μL, baseline corrected serum calcium <8.5 or >10.0 mg/dL and initial ECOG performance status >0. Using these factors three prognostic subgroups were formed based on the number of adverse PF present . Median PFS in patients with 0 or 1 adverse PF was 20.1 m (95% C.I. 19.0–22.3 m) compared to 13 m (95% C.I. 8.6–17.6 m) in patients with 2 adverse PF and 3.9 m (95% C.I. 1.8–7.2 m) in patients with >2 adverse PF. Conclusions: Five independent prognostic factors for predicting PFS were identified and used to categorize patients with metastatic RCC receiving VEGF-targeted therapies into three risk groups. These factors can be readily incorporated to clinical patient care, stratification schema for clinical trials utilizing these novel agents and for interpretation of clinical trial results using VEGF-targeted agents therapy. No significant financial relationships to disclose.
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Affiliation(s)
- A. Golshayan
- Cleveland Clinic Taussig Cancer Center, Cleveland, OH
| | | | - P. Elson
- Cleveland Clinic Taussig Cancer Center, Cleveland, OH
| | - J. A. Garcia
- Cleveland Clinic Taussig Cancer Center, Cleveland, OH
| | - M. Khaswneh
- Cleveland Clinic Taussig Cancer Center, Cleveland, OH
| | - S. Usman
- Cleveland Clinic Taussig Cancer Center, Cleveland, OH
| | - I. Tamaskar
- Cleveland Clinic Taussig Cancer Center, Cleveland, OH
| | - L. Wood
- Cleveland Clinic Taussig Cancer Center, Cleveland, OH
| | - B. I. Rini
- Cleveland Clinic Taussig Cancer Center, Cleveland, OH
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Usman S, Spitz H, Lee S. Analysis of electret ion chamber radon detector response to 222Rn and interference from background gamma radiation. Health Phys 1999; 76:44-49. [PMID: 9883946 DOI: 10.1097/00004032-199901000-00007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Environmental radon (222Rn) monitors that incorporate electret detectors are confounded by background gamma radiation, which may cause the electret to discharge by as much as 7.5 volts per mR. Although background gamma corrections were formerly made by multiplying the known background gamma exposure rate with a constant conversion factor, this research demonstrates that doing so introduces an error ranging up to about 20%, especially in high gamma background areas. A new, more accurate method of background gamma correction has been developed that uses an average, voltage-dependent discharge factor, Dgamma (V Kg C(-1)). This factor and its coefficients were experimentally determined by separately exposing groups of electret radon detectors to photons from 60Co and 137Cs. Statistical analysis shows that Dgamma is independent of the orientation of the electret during irradiation but that some dependency on dose rate or energy of the irradiating photons may be expected. The discharge of the electret due only to gamma irradiation, Vgamma is determined by multiplying the total integrated gamma exposure by Dgamma. The discharge of the electret during a radon measurement can then be corrected for background gamma radiation by subtracting Vgamma from the total discharge of the electret resulting in a net discharge due solely to radon. A new equation has also been developed in this study for the radon discharge factor, D(Rn)(V m3 Bq(-1) s(-1)), that is entirely consistent with the gamma discharge factor and was thoroughly evaluated by exposing the electret radon detectors to known concentrations of radon.
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Affiliation(s)
- S Usman
- University of Cincinnati Department of Mechanical, Industrial & Nuclear Engineering, OH 45221-0072, USA
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Ewasyshyn M, Bonneau AM, Usman S, Scollard N, Klein M. Comparative analysis of the immunoprotective abilities of glycosylated and deglycosylated parainfluenza virus type 3 surface glycoproteins. J Gen Virol 1993; 74 ( Pt 12):2781-5. [PMID: 8277287 DOI: 10.1099/0022-1317-74-12-2781] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The role of carbohydrate moieties on the immunoprotective ability of parainfluenza virus type 3 (PIV-3) haemagglutinin-neuraminidase (HN) and fusion (F) glycoproteins was tested in hamsters. HN and F proteins were purified from detergent-solubilized virus by lentil-lectin affinity chromatography and deglycosylated by treatment with endoglycosidase F (endo F). Immunization of hamsters with either 1 or 5 micrograms of mock-treated (glycosylated) affinity-purified proteins elicited strong haemagglutination inhibition and neutralizing antibody responses 4 weeks after the primary injection. In contrast, titres were significantly lower with endo F-treated (deglycosylated) proteins. However, following the booster doses with at least 5 micrograms of antigen, glycosylated and deglycosylated proteins induced comparable antibody titres. There was no significant difference in the ability of the glycosylated or deglycosylated proteins to protect either the upper or lower respiratory tracts of immunized hamsters against PIV-3 challenge. These results suggest that the carbohydrate moieties of the HN and F proteins are not necessary for eliciting a protective response in hamsters.
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Affiliation(s)
- M Ewasyshyn
- Connaught Centre for Biotechnology Research, Willowdale, Ontario, Canada
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