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Wallner M, Eaton DM, Berretta RM, Wu J, Jeong MY, Lin YH, Baker ST, Oyama MA, Von Lewinski D, Mohsin S, McKinsey TA, Wolfson MR, Houser SR. P6505HDAC inhibition rescues cardiac and pulmonary function in a feline model of HFpEF. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6505] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Wallner
- Temple University School of Medicine, Cardiovascular Research Center, Philadelphia, United States of America
| | - D M Eaton
- Temple University School of Medicine, Cardiovascular Research Center, Philadelphia, United States of America
| | - R M Berretta
- Temple University School of Medicine, Cardiovascular Research Center, Philadelphia, United States of America
| | - J Wu
- Temple University School of Medicine, Physiology; Thoracic Medicine and Surgery; CILR, Philadelphia, United States of America
| | - M Y Jeong
- University of Colorado, Division of Cardiology and Consortium for Fibrosis Research & Translation, Aurora, United States of America
| | - Y H Lin
- University of Colorado, Division of Cardiology and Consortium for Fibrosis Research & Translation, Aurora, United States of America
| | - S T Baker
- Temple University School of Medicine, Physiology; Thoracic Medicine and Surgery; CILR, Philadelphia, United States of America
| | - M A Oyama
- University of Pennsylvania, School of Veterinary Medicine, Section of Cardiology, Philadelphia, United States of America
| | - D Von Lewinski
- Medical University of Graz, Division of Cardiology, Graz, Austria
| | - S Mohsin
- Temple University School of Medicine, Cardiovascular Research Center, Philadelphia, United States of America
| | - T A McKinsey
- University of Colorado, Division of Cardiology and Consortium for Fibrosis Research & Translation, Aurora, United States of America
| | - M R Wolfson
- Temple University School of Medicine, Physiology; Thoracic Medicine and Surgery; CILR, Philadelphia, United States of America
| | - S R Houser
- Temple University School of Medicine, Cardiovascular Research Center, Philadelphia, United States of America
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Abstract
Background Propolis is a natural resinous mixture produced by honeybees, which exhibits anti-microbial, anti-inflammatory, cytostatic and cariostatic properties. The aim of the study was to evaluate the anti-bacterial efficacy of a propolis based dentifrice on Mutans Streptococci colonizing the oral cavity of young patients using Dentocult® SM strip mutans test. Methods Screening of 367 male subjects within the age group of 7–12 years was carried out. A total of 30 children were included in the study. They were instructed to use a Propolis dentifrice (Probee,™ Quasi-Medical Products, Seoul Propolis) daily for three minutes over a period of four weeks. Plaque and salivary samples were collected at baseline, 1st week, 3rd week and 4th week and were analyzed for Mutans Streptococci count using Dentocult® SM strip Mutans kit (Orion Diagnostica Oy, Finland). Student paired t-test and Friedman test were used for statistical analysis. Results It was unveiled that mean Mutans streptococci count at 1st week and 4th week, showed significant reduction (p≤0.0001), compared to baseline scores. Using Friedman's test, statistically significant difference was found between baseline and 1st week, 3rd week and 4th week follow up (P < 0.001). Conclusion Propolis dentifrice reduces in-vivo microbial load in microenvironments especially against Mutans streptococci in the oral cavity of young patients. Thus, it's potential to be inculcated and used as an alternative measure to prevent dental caries can be considered and further investigation involving greater number of participants is recommended.
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Affiliation(s)
- S Mohsin
- Department of Pedodontics and Preventive Dentistry, Jaipur Dental College, Jaipur, Rajasthan, India
| | - B Manohar
- Department of Pedodontics and Preventive Dentistry, Jaipur Dental College, Jaipur, Rajasthan, India
| | - S Rajesh
- Department of Pedodontics and Preventive Dentistry, Jaipur Dental College, Jaipur, Rajasthan, India
| | - Y Asif
- Department of Public Health Dentistry, Jaipur Dental College, Jaipur, Rajasthan, India
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Khan H, Akhtar N, Mahmood T, Jameel A, Mohsin S. Preliminary 1 month stability screening of cosmetic multiple emulsions (W/O/W) prepared using cetyl dimethicone copolyol and Polysorbate 80. Int J Cosmet Sci 2014; 37:76-81. [DOI: 10.1111/ics.12172] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 10/11/2014] [Indexed: 11/26/2022]
Affiliation(s)
- H. Khan
- Faculty of Pharmacy & Alternative Medicine; The Islamia University of Bahawalpur; Bahawalpur 63100 Pakistan
| | - N. Akhtar
- Faculty of Pharmacy & Alternative Medicine; The Islamia University of Bahawalpur; Bahawalpur 63100 Pakistan
| | - T. Mahmood
- Faculty of Pharmacy; University of Central Punjab; Lahore 54000 Pakistan
| | - A. Jameel
- Faculty of Pharmacy & Alternative Medicine; The Islamia University of Bahawalpur; Bahawalpur 63100 Pakistan
| | - S. Mohsin
- Faculty of Pharmacy & Alternative Medicine; The Islamia University of Bahawalpur; Bahawalpur 63100 Pakistan
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Mohsin S, Mahadevan R, Muraleedhara Kurup G. Free-radical-scavenging activity and antioxidant effect of ascophyllan from marine brown algae Padina tetrastromatica. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bionut.2013.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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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Mohsin S, Kurup GM, Mahadevan R. Effect of ascophyllan from brown algae Padina tetrastromatica on inflammation and oxidative stress in carrageenan-induced rats. Inflammation 2013; 36:1268-78. [PMID: 23760559 DOI: 10.1007/s10753-013-9665-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 10/26/2022]
Abstract
Sulfated polysaccharide ascophyllan was isolated from the brown algae Padina tetrastromatica and purified by ion-exchange chromatography. Anti-inflammatory effect of ascophyllan fraction against carrageenan-induced paw edema in rats was studied. Paw edema in rats was induced by injecting 0.1 ml, 1 % carrageenan suspension in 0.9 % NaCl solution into the sub-plantar tissue of the right hind paw. Carrageenan caused a significant increase in the activity of inflammatory marker enzymes like lipoxygenases and cyclooxygenase in peripheral blood mononuclear cells and paw tissue and also increased the concentration of prostaglandin E2 (PGE2) and myeloperoxidase (MPO) in paw tissue. When compared to the reference drug diclofenac, ascophyllan fraction-3 (AF3) treatment significantly reduced the activities of anti-inflammatory enzymes, concentration of PGE2 and MPO. AF3 treatment decreased the mRNA level expression of TNF-α and IL-6. Concentration of thiobarbituric acid reactive substances was decreased. Activities of antioxidant enzymes and reduced glutathione level were increased on treatment with AF3. Histopathology of paw tissue showed decreased edema formation and cellular infiltration on supplementation with AF3. Thus the results demonstrated the potential beneficiary effect of ascophyllan fraction on carrageenan-treated rats.
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Affiliation(s)
- Sulaiman Mohsin
- Department of Biochemistry, University of Kerala, Kariavattom, Thiruvananthapuram, 695 581, India
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7
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Abstract
This paper presents a face hashing technique for fast face recognition. The proposed technique employs the two existing algorithms, i.e., 2-D discrete cosine transformation and K-means clustering. The image has to go through different pre-processing phases and the two above-mentioned algorithms must be used in order to obtain the hash value of the face image. The searching process is increased by introducing a modified form of binary search. A new database architecture called Facebases has also been introduced to further speedup the searching process.
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Imran M, Saeed MT, Mahmood S, Mohsin S, Sohail S, Munir A, Nazir H. A strategy for carrier detection in Pakistani haemophilia B families. Haemophilia 2012; 18:e348-9. [PMID: 22642557 DOI: 10.1111/j.1365-2516.2012.02860.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2012] [Indexed: 11/27/2022]
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Mohsin S, Muraleedhara Kurup G. Mechanism underlying the anti-inflammatory effect of sulphated polysaccharide from Padina tetrastromatica against carrageenan induced paw edema in rats. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.bionut.2011.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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10
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Dabbs DJ, Klein M, Mohsin S, Tubbs RR, Bhargava R. High false-negative rate of HER2 qRT-PCR of the Oncotype DX test: An independent quality assurance study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.603] [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: 11/20/2022] Open
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Abstract
Myocardial infarction is one of the leading causes of death worldwide. Bone marrow contains different types of stem cells capable of differentiating into cardiomyocytes. Therefore, we hypothesized that bone marrow contains a lin-c-kit+ progenitor cell pool with the ability to home to the infarcted region and improve the cardiac function. BM-derived stem cells (BMSCs) from Green fluorescent protein (GFP) expressing transgenic mice C57BL/6 (n = 6) were isolated by c-kit labeled Microbeads. Lin-c-kit+ BMSCs co-cultured with rat neonatal cardiomyocytes were able to express cardiac marker and form intercellular connections with rat myocytes. Myocardial infarction was produced in the experimental animals C57BL/6 Wild type (n = 10) by permanent ligation of the Left anterior descending (LAD) artery. BMSCs enriched for c-kit were transplanted in the border zone area of the infarction. Cardiac function analyzed by Millar’s Apparatus after 4 weeks of transplantation showed improvement. BMSCs were able to form intercellular connections and new blood vessel formation as determined by Connexin 43 and CD31 respectively. Lin-c-kit+ BMSCs were able to align with the host myocardium, participate in angiogenesis and thus improve the cardiac function.
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Affiliation(s)
- M Khan
- National Center of Excellence in Molecular Biology, University of the Punjab , Lahore, Pakistan
| | - S Mohsin
- National Center of Excellence in Molecular Biology, University of the Punjab , Lahore, Pakistan
| | - Sn Khan
- National Center of Excellence in Molecular Biology, University of the Punjab , Lahore, Pakistan
| | - S Riazuddin
- National Center of Excellence in Molecular Biology, University of the Punjab , Lahore, Pakistan
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Khan M, Mohsin S, Khan S, Riazuddin S. Lin-c-kit(+) BM-derived stem cells repair Infarcted Heart. J Stem Cells Regen Med 2010; 6:15-25. [PMID: 24693056 PMCID: PMC3908253] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Myocardial infarction is one of the leading causes of death worldwide. Bone marrow contains different types of stem cells capable of differentiating into cardiomyocytes. Therefore, we hypothesized that bone marrow contains a lin-c-kit+ progenitor cell pool with the ability to home to the infarcted region and improve the cardiac function. BM-derived stem cells (BMSCs) from Green fluorescent protein (GFP) expressing transgenic mice C57BL/6 (n = 6) were isolated by c-kit labeled Microbeads. Lin-c-kit+ BMSCs co-cultured with rat neonatal cardiomyocytes were able to express cardiac marker and form intercellular connections with rat myocytes. Myocardial infarction was produced in the experimental animals C57BL/6 Wild type (n = 10) by permanent ligation of the Left anterior descending (LAD) artery. BMSCs enriched for c-kit were transplanted in the border zone area of the infarction. Cardiac function analyzed by Millar's Apparatus after 4 weeks of transplantation showed improvement. BMSCs were able to form intercellular connections and new blood vessel formation as determined by Connexin 43 and CD31 respectively. Lin-c-kit(+) BMSCs were able to align with the host myocardium, participate in angiogenesis and thus improve the cardiac function.
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Affiliation(s)
- M Khan
- National Center of Excellence in Molecular Biology, University of the Punjab , Lahore, Pakistan
| | - S Mohsin
- National Center of Excellence in Molecular Biology, University of the Punjab , Lahore, Pakistan
| | - Sn Khan
- National Center of Excellence in Molecular Biology, University of the Punjab , Lahore, Pakistan
| | - S Riazuddin
- National Center of Excellence in Molecular Biology, University of the Punjab , Lahore, Pakistan
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Mathew J, McMillin R, Gandhi J, Mohsin S, Czyborra S. Trace Level Haloacetic Acids in Drinking Water by Direct Injection Ion Chromatography and Single Quadrupole Mass Spectrometry. J Chromatogr Sci 2009; 47:505-9. [DOI: 10.1093/chromsci/47.7.505] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Microcracks have been implicated in the loss of bone quality for osteoporosis. In order to detect and monitor their growth, and to use these data to predict fractures, it is essential to obtain quantitative data regarding their shape in three dimensions. Beam-shaped bone samples from sheep radii were prepared and stained with fluorochrome dyes and tested in cyclical fatigue under four-point bending in a servo-hydraulic fatigue-testing machine. Samples were tested at a frequency of 30 Hz under load control at a stress range of 100 MPa. Holes were drilled into bone samples and used as reference points for reconstructions. A series of thin longitudinal sections were cut using a sledge macrotome. A two-dimensional image of each section was examined using an epifluorescence microscope and images transferred to a PC via a CCD low-light colour video camera. A three-dimensional image of each microcrack was reconstructed using computer software, and its dimensions measured. Cracks were elliptical in shape, longer in the longitudinal direction and with a mean aspect ratio of 5.5 +/- 1.05. The mean (+/- SD) length and width of labelled microcracks were 488 +/- 151 and 88 +/- 21 microm, respectively.
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Affiliation(s)
- S Mohsin
- Department of Anatomy, Royal College of Surgeons in Ireland, Dublin, Ireland
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15
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Abstract
Methylmethacrylate (MMA) is the most commonly used embedding medium for sectioning undecalcified bone; however, a number of problems exist with its use in a research laboratory. MMA requires a long infiltration time and temperature control, and it reacts with many polymers. We used Kleer Set resin as an alternative embedding medium for sectioning undecalcified bone specimens. Fluorochrome labeled bone specimens were sectioned transversely using a ground section technique and longitudinally on a sledge macrotome. The slides were viewed using both transmitted light and epifluorescence microscopy. High quality sections were obtained using Kleer Set resin for both sectioning techniques. We have shown that this new embedding medium is simpler, safer, quicker to use and does not interfere with visualization of fluorochromes.
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Affiliation(s)
- S Mohsin
- Department of Anatomy, Royal College of Surgeons in Ireland, Dublin.
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Abstract
Bone is an anisotropic structure which can be compared to a composite material. Discontinuities within its microstructure may provide stress concentration sites for crack initiation, but act as a barrier to its propagation. This study looks specifically at the relationship between crack length and propagation in compact bone. Beam-shaped bone samples from sheep radii were prepared and stained with fluorochrome dyes and tested in cyclic fatigue under four-point bending in an INSTRON 1341 servo-hydraulic fatigue-testing machine. Samples were tested at a frequency of 30 Hz and stress range of 100 MPa under load control. Specimens were sectioned transversely using a diamond saw, slides prepared and examined using epifluorescence microscopy. Cracks in transverse sections were classified in terms of their location relative to cement lines surrounding secondary osteons. Mean crack length, crack numerical density and crack surface density were examined. Short microcracks (100 microm or less) were stopped at the cement lines surrounding osteons, microcracks of intermediate length (100-300 microm) were deflected as they hit the cement line, and microcracks that were able to penetrate through cement lines were longer (> 400 microm). These data show that bone microstructure allows the initiation of microcracks but acts as a barrier to crack propagation.
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Affiliation(s)
- S Mohsin
- Department of Anatomy, Royal College of Surgeons in Ireland, Dublin, Ireland.
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Tham YL, Gutierrez C, Weiss H, Mohsin S, Hilsenbeck S, Elledge R, Chamness G, Osborne CK, Allred DC, Chang JC. Clinical response to neoadjuvant docetaxel predicts improved outcome in patients with large locally advanced breast cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.780] [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: 11/20/2022] Open
Affiliation(s)
| | | | - H. Weiss
- Baylor Coll of Medicine, Houston, TX
| | - S. Mohsin
- Baylor Coll of Medicine, Houston, TX
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Makris A, Hisenbeck SG, Yee D, Osborne KC, Elledge RM, Harrison M, Ostler PJ, Mohsin S, Gutierrez CM, Chang JC. A prospective randomized multicenter gene expression study of docetaxel vs doxorubicin/cyclophosphamide preoperative trial in primary breast cancers. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- A. Makris
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - S. G. Hisenbeck
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - D. Yee
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - K. C. Osborne
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - R. M. Elledge
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - M. Harrison
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - P. J. Ostler
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - S. Mohsin
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - C. M. Gutierrez
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
| | - J. C. Chang
- Mount Vernon Hosp, Northwood, Middlesex, United Kingdom; Baylor Coll of Medicine, Houston, TX; Univ of Minnesota, Minneapolis, MN
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Arun B, Mohsin S, Miller A, Isaacs C, Saxton K, Hilsenbeck S, Lamph W, Johnson K, Brown P, Elledge R. Acquisition of breast tissue in a biomarker modulation study using bexarotene in women at high risk of breast cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.1002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- B. Arun
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - S. Mohsin
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - A. Miller
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - C. Isaacs
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - K. Saxton
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - S. Hilsenbeck
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - W. Lamph
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - K. Johnson
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - P. Brown
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
| | - R. Elledge
- UT MD Anderson Cancer Ctr, Houston, TX; Baylor Coll of Medicine, Houston, TX; Cancer Therapy & Research Ctr, San Antonio, TX; Georgetown Univ, Washington, DC; Ligand Pharmaceuticals, San Diego, CA; NCI, NIH, Bethesda, MD
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Mohsin S, Anwar M, Rehman ZU, Waqar A, Ayyub M, Ali W. Value of D-dimers assay in diagnosis of pulmonary embolism. J PAK MED ASSOC 2004; 54:348-52. [PMID: 15449915] [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: 04/30/2023]
Abstract
OBJECTIVE To determine the value of D-Dimers assay in the diagnosis of Pulmonary Embolism (PE) at Armed Forces Institute of Pathology, Rawalpindi, Pakistan from January to November 2000. METHODS Forty three consecutive patients clinically suspected of suffering from pulmonary embolism and referred to Armed Forces Institute of Pathology for Ventilation-Perfusion scan of lungs were inducted in the study. A detailed history was taken and clinical examination was performed. All patients were then subjected to Perfusion and/or Ventilation scan, which was taken as the standard for the diagnosis of PE. Blood samples were collected from all patients in trisodium citrate. Platelet poor plasma obtained from the samples was tested for D-Dimers semi-quantitatively using latex agglutination method. RESULTS Out of 43 patients 14 (32.6%) had completely normal ventilation-perfusion scan hence the diagnosis of PE was excluded. In 6 (13.9%) patients the results were considered indeterminate. Abnormalities suggestive of pulmonary embolism were detected in 23 (53.5%) patients. D-Dimers were less than the cut off value of 500 ng/ml in 19 (44.2%) patients, whereas in 24 (55.8%) the levels were more than 500 ng/ml. When compared with the results of ventilation-perfusion scan the sensitivity of D-Dimers was 91.3% and specificity was 100%. Positive predictive value of the test was 100% whereas negative predictive value was 87.5%. CONCLUSION D-Dimers assay combined with high clinical evidence is a cost effective, readily available test which can safely exclude the diagnosis of pulmonary embolism in majority of the cases.
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Affiliation(s)
- S Mohsin
- Department of Haematology, Armed Forces Institute of Pathology, Rawalpindi
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21
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Abstract
Fatigue-induced microdamage in bone contributes to stress and fragility fractures and acts as a stimulus for bone remodelling. Detecting such microdamage is difficult as pre-existing microdamage sustained in vivo must be differentiated from artefactual damage incurred during specimen preparation. This was addressed by bulk staining specimens in alcohol-soluble basic fuchsin dye, but cutting and grinding them in an aqueous medium. Nonetheless, some artefactual cracks are partially stained and careful observation under transmitted light, or epifluorescence microscopy, is required. Fuchsin lodges in cracks, but is not site-specific. Cracks are discontinuities in the calcium-rich bone matrix and chelating agents, which bind calcium, can selectively label them. Oxytetracycline, alizarin complexone, calcein, calcein blue and xylenol orange all selectively bind microcracks and, as they fluoresce at different wavelengths and colours, can be used in sequence to label microcrack growth. New agents that only fluoresce when involved in a chelate are currently being developed--fluorescent photoinduced electron transfer (PET) sensors. Such agents enable microdamage to be quantified and crack growth to be measured and are useful histological tools in providing data for modelling the material behaviour of bone. However, a non-invasive method is needed to measure microdamage in patients. Micro-CT is being studied and initial work with iodine dyes linked to a chelating group has shown some promise. In the long term, it is hoped that repeated measurements can be made at critical sites and microdamage accumulation monitored. Quantification of microdamage, together with bone mass measurements, will help in predicting and preventing bone fracture failure in patients with osteoporosis.
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Affiliation(s)
- T C Lee
- Department of Anatomy, Royal College of Surgeons in Ireland, St Stephen's Green, Dublin, Ireland.
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Lee AV, Zhang P, Ivanova M, Bonnette S, Oesterreich S, Rosen JM, Grimm S, Hovey RC, Vonderhaar BK, Kahn CR, Torres D, George J, Mohsin S, Allred DC, Hadsell DL. Developmental and hormonal signals dramatically alter the localization and abundance of insulin receptor substrate proteins in the mammary gland. Endocrinology 2003; 144:2683-94. [PMID: 12746333 DOI: 10.1210/en.2002-221103] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Insulin receptor substrates (IRS) are central integrators of hormone, cytokine, and growth factor signaling. IRS proteins can be phosphorylated by a number of signaling pathways critical to normal mammary gland development. Studies in transgenic mice that overexpress IGF-I in the mammary gland suggested that IRS expression is important in the regulation of normal postlactational mammary involution. The goal of these studies was to examine IRS expression in the mouse mammary gland and determine the importance of IRS-1 to mammary development in the virgin mouse. IRS-1 and -2 show distinct patterns of protein expression in the virgin mouse mammary gland, and protein abundance is dramatically increased during pregnancy and lactation, but rapidly lost during involution. Consistent with hormone regulation, IRS-1 protein levels are reduced by ovariectomy, induced by combined treatment with estrogen and progesterone, and vary considerably throughout the estrous cycle. These changes occur without similar changes in mRNA levels, suggesting posttranscriptional control. Mammary glands from IRS-1 null mice have smaller fat pads than wild-type controls, but this reduction is proportional to the overall reduction in body size. Development of the mammary duct (terminal endbuds and branch points) is not altered by the loss of IRS-1, and pregnancy-induced proliferation is not changed. These data indicate that IRS undergo complex developmental and hormonal regulation in the mammary gland, and that IRS-1 is more likely to regulate mammary function in lactating mice than in virgin or pregnant mice.
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Affiliation(s)
- A V Lee
- The Breast Center, Department of Medicine, Baylor College of Medicine, Houston, Texas 77030, USA.
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Abstract
Haversian systems or secondary osteons are an integral component of compact bone. However, as their exact shape is debatable, this study describes a technique to view their morphology in three dimensions. Bone remodeling in adult ovine long bones was labelled at intervals using a series of chelating fluorochromes. A series of longitudinal sections were cut at 25 microm intervals through blocks of the distal radius embedded in methylmethacrylate using a sledge macrotome. The chelating agents were used as markers of bone formation in the study of bone growth and osteon morphology. The two-dimensional image of each section was examined using an epifluorescence microscope. Images were transferred to a PC via a CCD low light colour video camera. Surface reference points were noted on each of the sections and, using computer software, a three-dimensional image of a refilling labelled osteon was reconstructed and its dimensions measured. Haversian systems may have a gentle spiral course along the longitudinal axis of the bone. They intertwine with adjacent osteons and give multiple branches along their course producing a complex pattern of organization. The mean labelled length and diameter of the osteons was 1.4 + 1 mm and 145 + 0.42 microm [Mean + S.D], respectively.
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Affiliation(s)
- S Mohsin
- Department of Anatomy, Royal College of Surgeons in Ireland, Dublin
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24
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Fuqua SA, Wiltschke C, Zhang QX, Borg A, Castles CG, Friedrichs WE, Hopp T, Hilsenbeck S, Mohsin S, O'Connell P, Allred DC. A hypersensitive estrogen receptor-alpha mutation in premalignant breast lesions. Cancer Res 2000; 60:4026-9. [PMID: 10945602] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The best current model of breast cancer evolution suggests that most cancers arise from certain premalignant lesions. We have identified a common (34%) somatic mutation in the estrogen receptor (ER)-alpha gene in a series of 59 typical hyperplasias, a type of early premalignant breast lesion. The mutation, which affects the border of the hinge and hormone binding domains of ER-alpha, showed increased sensitivity to estrogen as compared with wild-type ER-alpha in stably transfected breast cancer cells, including markedly increased proliferation at subphysiological levels of estrogen. The mutated ER-alpha exhibits enhanced binding to the TIF-2 coactivator at low levels of hormone, which may partially explain its increased estrogen responsiveness. These data suggest that this mutation may promote or accelerate the development of cancer from premalignant breast lesions.
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Affiliation(s)
- S A Fuqua
- Breast Center, Baylor College of Medicine, Houston, Texas 77030, USA.
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26
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Kanz MF, Kaphalia L, Mohsin S, Taj Z, Moslen MT. Hyperthyroidism increases covalent binding and biliary excretion of 1,1-dichloroethylene in rats. J Toxicol Environ Health 1994; 41:187-206. [PMID: 8301698 DOI: 10.1080/15287399409531836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Distribution, covalent binding, and biliary excretion of 1,1-dichloroethylene (DCE) were examined in euthyroid (EuT) and hyperthyroid (HyperT) rats, which are more vulnerable to DCE hepatotoxicity. Male Sprague-Dawley rats were made hyperthyroid by 3 sc injections of thyroxine at 48-h intervals prior to experiments; euthyroid controls received vehicle injections. A time course study monitored the circulation and excretion of 14C-DCE label for 24 h after administration of 14C-labeled DCE (50 mg/kg in mineral oil) in serial blood and urine samples. At 24 h, total and covalently bound 14C-label were measured in liver, kidney, and lung. Hepatotoxicity of DCE was enhanced in the HyperT rats, as evidenced by elevated serum activities of aminotransferase and histopathology, and was associated with increases in circulating metabolite, and in metabolite bound to red blood cells and liver but not to kidney or lung. Hyperthyroidism had little effect on in vitro capacity of hepatic microsomes to convert DCE to reactive intermediates as reflected by covalent binding. A biliary excretion study in pentobarbital-anesthetized rats showed a striking, but transient, increase in toxicant metabolite excretion in bile of HyperT rats during the first 2 h after toxicant administration (14C-DCE, 100 mg/kg). During the next 2 h, biliary metabolite excretion by HyperT rats decreased while there was a rise in circulating amounts of total and bound 14C-label. Thus, although hyperthyroidism had little effect on the total extent of DCE metabolized, this hormonal disturbance may have transiently enhanced metabolite formation and definitely was associated with a lesser ability to detoxify reactive DCE metabolites capable of injuring hepatic cell constituents by covalent binding reactions.
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Affiliation(s)
- M F Kanz
- Department of Pathology, University of Texas Medical Branch, Galveston 77555-0605
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27
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Singhal U, Mohsin S, Saini K, Singhal KC. Serum level of iron and transferrin in normal and anaemic pregnant women. Indian J Physiol Pharmacol 1993; 37:71-4. [PMID: 8449550] [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: 01/30/2023]
Abstract
Serum levels of iron and transferrin, and percent saturation of total iron binding capacity (TIBC) and latent iron binding capacity were estimated in 89 women in their I, II and IIIrd trimester of pregnancy. Associated infective, metabolic or degenerative diseases were excluded after clinical examination. The women were divided into three groups of normal, mildly anaemic and severely anaemic. In the normal group serum iron levels were within normal range irrespective of period of gestation, whereas in the anaemic groups, these were lower. Serum transferrin levels were significantly low in II and III trimester of pregnancy of anaemic women. Percent saturation of TIBC was even lower than normal in Ist trimester of pregnancy in normal pregnancy (27.12%). However in mild anaemic there was significant fall and in severe anaemia, it was very low, leaving a vast latent iron binding capacity. The decrease of % saturation of TIBC even in normal pregnant women is indicative of inherent poor stores, which may be due to defective diet.
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Affiliation(s)
- U Singhal
- Department of Physiology, J.N. Medical College, Aligarh Muslim University
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28
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Gupta SK, Aziz M, Khan AA, Mohsin S. Significance of serum leucine aminopeptidase in tumours of female genital tract. J Indian Med Assoc 1989; 87:68-70. [PMID: 2778330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Serum leucine aminopeptidase (LAP) was estimated in 57 female patients with tumours of the genital tract and compared with 50 age-matched controls. Serum LAP was increased in leiomyomas (p less than 0.01) but significant rise was seen in leiomyosarcomas and endometrial carcinoma of the uterus (p less than 0.001). No increase in serum LAP level, above mean control value was observed in carcinoma of cervix. LAP levels were also increased in cystadenomas of the ovary (p less than 0.01) and highly significant increase, noted in cystadenocarcinomas and dysgerminoma stage III (p less than 0.001). However, no increase of enzyme activity was observed in poorly differentiated papillary carcinoma of the ovary. The serum enzyme level was higher in cystadenocarcinomas as compared to solid ovarian carcinomas in the same clinical stage.
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Kumar R, Malik A, Bal A, Mohsin S. Mycoplasma in female genital tract infections. INDIAN J PATHOL MICR 1980; 23:103-8. [PMID: 7450822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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Mohsin S, Pennefather JN. The sympathetic innervation of the mammalian ovary. A review of pharmacological and histological studies. Clin Exp Pharmacol Physiol 1979; 6:335-54. [PMID: 380860 DOI: 10.1111/j.1440-1681.1979.tb01255.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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31
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Tyagi SP, Madan A, Tyagi N, Mohsin S, Hamid F, Saxena K. Metastatic tumours of ovary. INDIAN J PATHOL MICR 1979; 22:1-5. [PMID: 232487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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32
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Tyagi SP, Madan A, Mohsin S, Hameed F, Saxena K. Epithelial tumours of the ovary. INDIAN J PATHOL MICR 1978; 21:281-9. [PMID: 571412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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33
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Kumar R, Malik A, Bal A, Mohsin S. Incidence of mycoplasma in normal female genital tract. INDIAN J PATHOL MICR 1978; 21:219-25. [PMID: 750456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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34
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Tyagi SP, Madan A, Mohsin S, Hameed S. Germ cell tumours of the ovary--a histopathological study. INDIAN J PATHOL MICR 1978; 21:97-105. [PMID: 730277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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35
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Mathur GP, Kumar R, Arora DP, Saxena K, Mohsin S, Mathur S. Development of rectal bacterial flora in neonates during first seven days of life. Indian Pediatr 1973; 10:603-5. [PMID: 4781019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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