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Das S, Uddin M, Haque M, Chakraborty D, Mostafa M, Hasnaine A, Das S, Uddin M. Hydroxymethylfurfural Content and Sugar Profile of Honey Available in Bangladesh Using Validated HPLC-PDA and HPLC-RID. JFQHC 2022. [DOI: 10.18502/jfqhc.9.3.11154] [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: 11/29/2022] Open
Abstract
Background: Honey has a lot of reputation because of its supposed medicinal properties. In this study, Hydroxymethylfurfural (HMF), sugars, and Fructose/Glucose ratio of honey in Bangladesh were assessed for adulteration and authenticity evaluation.
Methods: Seventy honey samples collected from different districts of Bangladesh were analyzed by High Performance Liquid Chromatography (HPLC) for HMF content and sugar profile. The samples were prepared by using Carrez I and Carrez II prior to injecting into HPLC. The samples were then filtered through syringe filter and taken in 1.5 ml vial for injecting into the HPLC system.
Results: HMF values were ranging from 1.41 mg/kg to 2,063.90 mg/kg. The Limit of Detection (LOD) and Limit of Quantification (LOQ) was found 0.10 mg/kg and 0.33 mg/kg with R2=0.9994. The average values of fructose, glucose, and sucrose were in the range of 14.75-52.44%, 8.19-42.63%, and 0.10-21.12%, respectively. From validation parameters, LOD values for fructose, glucose, and sucrose were 0.003, 0.008, and 0.004%, respectively; and LOQ values were 0.01, 0.028, and 0.015%, respectively with an excellent linearity with R2 for fructose=1.0, glucose=0.9999, and sucrose=1.0.
Conclusion: Some samples had higher HMF content which may be due to the storage time was increased and improper processing with high temperature or adulteration by High Fructose Corn Syrup (HFCS), sugar cane syrup, rice syrups or rice molasses. The sugar profiles showed that the most of honey samples were nectar honeys.
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Jabin T, Hossain M, Nasrin S, Tabassum R, Rahman M, Uddin M. Microbiological assessment and detection of drug resistant bacterial isolates in
some vended fresh fruit juice samples in Dhaka city, Bangladesh. Food Res 2022. [DOI: 10.26656/fr.2017.6(4).517] [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: 11/12/2022] Open
Abstract
The consumption of fruit juices may affect both positively and negatively the health status
of the consumers. When processed under a hygienic condition it could improve
consumers' health by preventing various types of diseases. On the contrary, in absence of
good manufacturing practices considering the nutritional affluence of fruit juices makes
the product good middling for microbial growth and vehicle of foodborne pathogens. The
current study was undertaken to determine the microbiological traits of the vended fruit
juices collected from different areas of Dhaka city, Bangladesh. A total of twenty juice
samples particularly of four categories such as lemon, sugarcane, malta and watermelon
were analyzed for the detection of total viable bacterial load, coliforms, and some other
pathogenic bacteria. In these samples, total viable bacteria were within the array between
104
-107CFU/mL. Total coliforms (both Escherichia coli and Klebsiella spp.) were found
in 50% of the samples, alarmingly all exceeding the standard bacteriological limits
(1.0×104 CFU/mL) recommended for fruit juices. Among the pathogenic bacteria
Salmonella spp. and Vibrio spp. were detected. All these bacterial isolates were detected
through standard cultural, microscopic and biochemical tests. A varying degree of drug
resistance among the isolates was observed against Amoxycillin, Ampicillin,
Azithromycin, Erythromycin, Imipenem and Vancomycin. Overall, the study indicated
that the quality of vendor fresh juices was not up to the mark. That’s why there is a
continuous need for the microbiological assessment of these popular ready-to-drink
products otherwise they may create potential health hazards.
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Uddin M, Lim LC, Goodall A, Padaki P, Anjum K. Synchronous mucosal and intraosseous oral cavity carcinomas: a case of rare occult second primary malignancy. Ann R Coll Surg Engl 2021; 104:e150-e152. [PMID: 34841900 DOI: 10.1308/rcsann.2021.0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Secondary primary malignancies within the head and neck region are well documented. Within this group, synchronous tumours with an index oral cancer are usually found in the oropharyngeal or laryngeal sites. We present a rare case of an index squamous cell carcinoma in the tongue with a synchronous primary intraosseous squamous cell carcinoma. We discuss the challenges associated with investigation, diagnosis and subsequent management. Treatment aims remain the same; namely, eradicating the disease using surgery, radiotherapy, chemotherapy or a combination of these modalities. It is important to acknowledge the unpredictable pattern of tumour presentation and the need to maintain a high index of suspicion.
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Affiliation(s)
- M Uddin
- Lancashire Teaching Hospitals NHS Foundation Trust, UK
| | - L C Lim
- Lancashire Teaching Hospitals NHS Foundation Trust, UK
| | - A Goodall
- Lancashire Teaching Hospitals NHS Foundation Trust, UK
| | - P Padaki
- Lancashire Teaching Hospitals NHS Foundation Trust, UK
| | - K Anjum
- Lancashire Teaching Hospitals NHS Foundation Trust, UK
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4
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Havdahl A, Niarchou M, Starnawska A, Uddin M, van der Merwe C, Warrier V. Genetic contributions to autism spectrum disorder. Psychol Med 2021; 51:2260-2273. [PMID: 33634770 PMCID: PMC8477228 DOI: 10.1017/s0033291721000192] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 01/14/2021] [Accepted: 01/18/2021] [Indexed: 12/12/2022]
Abstract
Autism spectrum disorder (autism) is a heterogeneous group of neurodevelopmental conditions characterized by early childhood-onset impairments in communication and social interaction alongside restricted and repetitive behaviors and interests. This review summarizes recent developments in human genetics research in autism, complemented by epigenetic and transcriptomic findings. The clinical heterogeneity of autism is mirrored by a complex genetic architecture involving several types of common and rare variants, ranging from point mutations to large copy number variants, and either inherited or spontaneous (de novo). More than 100 risk genes have been implicated by rare, often de novo, potentially damaging mutations in highly constrained genes. These account for substantial individual risk but a small proportion of the population risk. In contrast, most of the genetic risk is attributable to common inherited variants acting en masse, each individually with small effects. Studies have identified a handful of robustly associated common variants. Different risk genes converge on the same mechanisms, such as gene regulation and synaptic connectivity. These mechanisms are also implicated by genes that are epigenetically and transcriptionally dysregulated in autism. Major challenges to understanding the biological mechanisms include substantial phenotypic heterogeneity, large locus heterogeneity, variable penetrance, and widespread pleiotropy. Considerable increases in sample sizes are needed to better understand the hundreds or thousands of common and rare genetic variants involved. Future research should integrate common and rare variant research, multi-omics data including genomics, epigenomics, and transcriptomics, and refined phenotype assessment with multidimensional and longitudinal measures.
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Affiliation(s)
- A. Havdahl
- Nic Waals Institute, Lovisenberg Diaconal Hospital, Oslo, Norway
- Department of Mental Disorders, Norwegian Institute of Public Health, Oslo, Norway
- Department of Psychology, PROMENTA Research Center, University of Oslo, Oslo, Norway
| | - M. Niarchou
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center, TN, USA
| | - A. Starnawska
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Denmark
- Department of Biomedicine, Aarhus University, Denmark
- Center for Genomics for Personalized Medicine, CGPM, and Center for Integrative Sequencing, iSEQ, Aarhus, Denmark
| | - M. Uddin
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, UAE
| | - C. van der Merwe
- Stanley Center for Psychiatric Research, The Broad Institute of MIT and Harvard, MA, USA
| | - V. Warrier
- Department of Psychiatry, Autism Research Centre, University of Cambridge, UK
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Uddin M, Bowen A, Betts G, Sainuddin S. Synchronous oral cavity malignancy in identical twins-unusual coincidence of similarities. Int J Oral Maxillofac Surg 2021; 51:621-624. [PMID: 34481736 DOI: 10.1016/j.ijom.2021.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 06/25/2021] [Accepted: 08/20/2021] [Indexed: 11/18/2022]
Abstract
The multifactorial nature of head and neck squamous cell carcinoma (HNSCC) has led to increased efforts in establishing various risk factors. Well-known environmental risk factors for HNSCC include tobacco use, heavy alcohol consumption, immunosuppression, and more recently human papillomavirus infection. Familial clustering has been observed in cancers occurring at other sites, but not so much with oral squamous cell carcinoma (OSCC) without exposure to shared environmental risk factors. An unusual case of identical twins who presented with OSCC involving an identical site and exhibiting similar histological features is reported here. The two patients underwent identical surgery with curative intent, culminating in good outcomes. It appears that no other cases of identical twins with a similar presentation in time, anatomical site, and histopathology have been reported in the literature.
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Affiliation(s)
- M Uddin
- Department of Oral and Maxillofacial Surgery, Manchester Royal Infirmary, Manchester, UK.
| | - A Bowen
- Department of Oral and Maxillofacial Surgery, Manchester Royal Infirmary, Manchester, UK.
| | - G Betts
- Department of Adult Histopathology, Manchester Royal Infirmary, Manchester, UK.
| | - S Sainuddin
- Department of Oral and Maxillofacial Surgery, Manchester Royal Infirmary, Manchester, UK.
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6
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Duncan LE, Ratanatharathorn A, Aiello AE, Almli LM, Amstadter AB, Ashley-Koch AE, Baker DG, Beckham JC, Bierut LJ, Bisson J, Bradley B, Chen CY, Dalvie S, Farrer LA, Galea S, Garrett ME, Gelernter JE, Guffanti G, Hauser MA, Johnson EO, Kessler RC, Kimbrel NA, King A, Koen N, Kranzler HR, Logue MW, Maihofer AX, Martin AR, Miller MW, Morey RA, Nugent NR, Rice JP, Ripke S, Roberts AL, Saccone NL, Smoller JW, Stein DJ, Stein MB, Sumner JA, Uddin M, Ursano RJ, Wildman DE, Yehuda R, Zhao H, Daly MJ, Liberzon I, Ressler KJ, Nievergelt CM, Koenen KC. Largest GWAS of PTSD (N=20 070) yields genetic overlap with schizophrenia and sex differences in heritability. Mol Psychiatry 2018; 23:666-673. [PMID: 28439101 PMCID: PMC5696105 DOI: 10.1038/mp.2017.77] [Citation(s) in RCA: 275] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 01/19/2017] [Accepted: 02/15/2017] [Indexed: 12/12/2022]
Abstract
The Psychiatric Genomics Consortium-Posttraumatic Stress Disorder group (PGC-PTSD) combined genome-wide case-control molecular genetic data across 11 multiethnic studies to quantify PTSD heritability, to examine potential shared genetic risk with schizophrenia, bipolar disorder, and major depressive disorder and to identify risk loci for PTSD. Examining 20 730 individuals, we report a molecular genetics-based heritability estimate (h2SNP) for European-American females of 29% that is similar to h2SNP for schizophrenia and is substantially higher than h2SNP in European-American males (estimate not distinguishable from zero). We found strong evidence of overlapping genetic risk between PTSD and schizophrenia along with more modest evidence of overlap with bipolar and major depressive disorder. No single-nucleotide polymorphisms (SNPs) exceeded genome-wide significance in the transethnic (overall) meta-analysis and we do not replicate previously reported associations. Still, SNP-level summary statistics made available here afford the best-available molecular genetic index of PTSD-for both European- and African-American individuals-and can be used in polygenic risk prediction and genetic correlation studies of diverse phenotypes. Publication of summary statistics for ∼10 000 African Americans contributes to the broader goal of increased ancestral diversity in genomic data resources. In sum, the results demonstrate genetic influences on the development of PTSD, identify shared genetic risk between PTSD and other psychiatric disorders and highlight the importance of multiethnic/racial samples. As has been the case with schizophrenia and other complex genetic disorders, larger sample sizes are needed to identify specific risk loci.
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Affiliation(s)
- L E Duncan
- Department of Psychiatry, Stanford University, Stanford, CA, USA
- Broad Institute of MIT and Harvard, Stanley Center for Psychiatric Research, Boston, MA, USA
- The Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA
| | | | - A E Aiello
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, Chapel Hill, NC, USA
| | - L M Almli
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, GA, USA
| | - A B Amstadter
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA
| | - A E Ashley-Koch
- Department of Medicine, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA
| | - D G Baker
- Veterans Affairs San Diego Healthcare System and Veterans Affairs Center of Excellence for Stress and Mental Health, San Diego, CA, USA
- Department of Psychiatry, University of California, San Diego, San Diego, CA, USA
| | - J C Beckham
- Veterans Affairs Durham Healthcare System, Durham, NC, USA
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
| | - L J Bierut
- Department of Psychiatry, Washington University School of Medicine, St Louis, MO, USA
| | - J Bisson
- Division of Psychological Medicine and Clinical Neurosciences, Cardiff University, Cardiff, UK
| | - B Bradley
- Atlanta VA Medical Center, Atlanta, GA, USA
- Department of Psychiatry, Emory University, Atlanta, GA, USA
| | - C-Y Chen
- The Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA
- Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, and Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
- Department of Psychiatry, Harvard University, Cambridge, MA, USA
| | - S Dalvie
- Division of Human Genetics, University of Cape Town, Cape Town, South Africa
| | - L A Farrer
- Biomedical Genetics, Boston University School of Medicine, Boston, MA, USA
| | - S Galea
- Boston University School of Public Health, Boston, MA, USA
| | - M E Garrett
- Department of Medicine, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA
| | - J E Gelernter
- Department of Psychiatry, Yale University School of Medicine and VA CT Healthcare System, New Haven, CT, USA
| | - G Guffanti
- Department of Psychiatry, Harvard University, Cambridge, MA, USA
- Department of Psychiatry, McLean Hospital, Belmont, MA, USA
| | - M A Hauser
- Department of Medicine, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA
| | - E O Johnson
- RTI International, Research Triangle Park, NC, USA
| | - R C Kessler
- Department of Health Care Policy, Harvard Medical School, Boston, MA, USA
| | - N A Kimbrel
- Veterans Affairs Durham Healthcare System, Durham, NC, USA
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
| | - A King
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
| | - N Koen
- Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
- MRC Unit on Anxiety & Stress Disorders, Groote Schuur Hospital, Cape Town, South Africa
| | - H R Kranzler
- Department of Psychiatry, University of Pennsylvania Perelman School of Medicine and VISN 4 MIRECC, Crescenz VAMC, Philadelphia, PA, USA
| | - M W Logue
- VA Boston Healthcare System, Jamaica Plain, MA, USA
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - A X Maihofer
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - A R Martin
- Broad Institute of MIT and Harvard, Stanley Center for Psychiatric Research, Boston, MA, USA
- The Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA
| | - M W Miller
- VA Boston Healthcare System, Jamaica Plain, MA, USA
- Department of Psychiatry, Boston University School of Medicine, Boston, MA, USA
| | - R A Morey
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
- Durham VA Medical Center, Durham, NC, USA
| | - N R Nugent
- Division of Behavioral Genetics, Department of Psychiatry, Rhode Island Hospital, Providence, RI, USA
- Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA
| | - J P Rice
- Department of Psychiatry, Washington University, St Louis, MO, USA
| | - S Ripke
- Broad Institute of MIT and Harvard, Stanley Center for Psychiatric Research, Boston, MA, USA
- The Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA
- Department of Psychiatry and Psychotherapy, Charité, Campus Mitte, Berlin, Germany
| | - A L Roberts
- Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health Cambridge, MA, USA
| | - N L Saccone
- Department of Genetics, Washington University, St Louis, MO, USA
| | - J W Smoller
- Broad Institute of MIT and Harvard, Stanley Center for Psychiatric Research, Boston, MA, USA
- Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, and Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - D J Stein
- Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
- MRC Unit on Anxiety & Stress Disorders, Groote Schuur Hospital, Cape Town, South Africa
| | - M B Stein
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
- Veterans Affairs San Diego Healthcare System, San Diego, CA, USA
- Department of Family Medicine and Public Health, University of California, San Diego, La Jolla, CA, USA
| | - J A Sumner
- Center for Cardiovascular Behavioral Health, Columbia University Medical Center, New York, NY, USA
| | - M Uddin
- Department of Psychology and Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - R J Ursano
- Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - D E Wildman
- Department of Molecular & Integrative Physiology and Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - R Yehuda
- James J. Peters Bronx Veterans Affairs and Department of Psychiatry, Icahn School of Medicine at Mount Sinai, Bronx, NY, USA
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, Bronx, NY, USA
| | - H Zhao
- Department of Biostatistics, Yale University, New Haven, CT, USA
| | - M J Daly
- Broad Institute of MIT and Harvard, Stanley Center for Psychiatric Research, Boston, MA, USA
- The Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA
| | - I Liberzon
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
- VA Ann Arbor Health System, Ann Arbor, MI, USA
| | - K J Ressler
- Department of Psychiatry, Harvard University, Cambridge, MA, USA
- Department of Psychiatry, McLean Hospital, Belmont, MA, USA
| | - C M Nievergelt
- Veterans Affairs San Diego Healthcare System and Veterans Affairs Center of Excellence for Stress and Mental Health, San Diego, CA, USA
- Department of Psychiatry, University of California, San Diego, San Diego, CA, USA
| | - K C Koenen
- Broad Institute of MIT and Harvard, Stanley Center for Psychiatric Research, Boston, MA, USA
- Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, and Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Cambridge, MA, USA
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Lowe SR, Joshi S, Galea S, Aiello AE, Uddin M, Koenen KC, Cerdá M. Pathways from assaultive violence to post-traumatic stress, depression, and generalized anxiety symptoms through stressful life events: longitudinal mediation models. Psychol Med 2017; 47:2556-2566. [PMID: 28464960 PMCID: PMC5675529 DOI: 10.1017/s0033291717001143] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Assaultive violence events are associated with increased risk for adverse psychiatric outcomes, including post-traumatic stress (PTS), depression, and generalized anxiety. Prior research has indicated that economic, legal, and social stressors that could follow assaultive events may explain the increased risk for adverse psychiatric outcomes, yet longitudinal studies have not adequately examined this pathway. In the current study, we aimed to address this limitation. METHODS Participants (N = 1360) were part of a longitudinal population-based study of adults living in Detroit. At three waves, participants indicated their exposure to assaultive violence and economic, legal, and social stressors, and completed inventories of PTS, depression, and generalized anxiety. Longitudinal mediation models were used to test the hypothesized pathway from assaultive violence to each psychiatric outcome. RESULTS The hypothesized models evidenced good fit with the data and, in each, the paths from Wave 1 (W1) assaultive violence to W2 stressors, and from W2 stressors to W3 symptoms were significant (range of Standardized Estimates: 0.09-0.15, all p < 0.01). Additionally, the indirect paths from W1 assaultive violence to W3 symptoms were significant (range of Standardized Estimates: 0.01-0.02, all p < 0.05). CONCLUSIONS The findings illustrate that the economic, legal, and social stressors that could follow assaultive violence increase risk for a range of psychiatric symptoms. Although future research is needed, the results suggest that investment in interventions that prevent and mitigate assaultive violence survivors' exposure to such stressors may be an effective way to prevent mental illness in the aftermath of violent assaults.
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Affiliation(s)
- S. R. Lowe
- Department of Psychology, Montclair State University, Montclair, NJ, USA
| | - S. Joshi
- Department of Epidemiology, University of Minnesota, Minneapolis, MN, USA
| | - S. Galea
- Departmentof Epidemiology, Boston University School of Public Health, Boston, MA, USA
| | - A. E. Aiello
- Department of Epidemiology, University of North Carolina at Chapel Hill Gillings School of Global Public Health, Chapel Hill, NC, USA
| | - M. Uddin
- Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - K. C. Koenen
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - M. Cerdá
- Department Emergency Medicine, University of California at Davis, Davis, CA, USA
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Khan MMA, Uddin M. Polyacrylamide and radiation-derived oligosaccharides induced regulation of physiological processes and essential oil production in Vetiveria zizanioides L. Nash. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608554] [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: 10/18/2022]
Affiliation(s)
- MMA Khan
- Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - M Uddin
- Botany Section, Women's College, Aligarh Muslim University, Aligarh, India
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Shoaib A, Mamas M, Thackray S, Uddin M, Perveen R, Khan R, McDonagh T, Dargie H, Hardman S, Clark A, Cleland J. P2460Furosemide versus bumetanide; a deep dive into national heart failure audit (England & Wales). Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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10
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Alam MN, Uddin MJ, Hossain MA, Bashar SM, Akhter M, Nahar N, Swapan K, Alam MM, Sultana N, Hallaz MM, Alam MM, Uddin M, Nahar R, Shathi FA, Islam MS, Ara R. Study on Neurological Consequence of Eclampsia. Mymensingh Med J 2016; 25:396-401. [PMID: 27612881] [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: 06/06/2023]
Abstract
The present study was carried out in the Department of Obstetrics and Gynecology at Mymensingh Medical College Hospital, Mymensingh, Bangladesh for a period of one year from 1st June 2009 to 30th June 2010 to see the Neurological Consequence of Eclampsia. A total number of 37 patients were enrolled in this study. Among 37 patients majority are in the age group of 21-30 years which is 19(51.4%) cases followed by less than or equal to 20 years and more than 30 years which are 13(35.1%) cases and 5(13.5%) cases respectively. Knee jerk is present in 28(75.7%) cases and absent in 8(21.6%) cases. The exaggerated knee jerk is present in only in 1(2.7%) case. The rate of Glasgow coma scale is less than 5 in 21(56.8%) cases, 14(37.8%) cases in 5-10 and 2(5.4%) cases is in more than 10. Focal sign is absent in 22(59.5%) cases and present in 15(40.5%) cases. Majority of the patients is presented with absence of neck stiffness which is 35(94.6%) cases and the rest 2(5.4%) cases are presented with neck stiffness. Flexor planter response is found in 20(54.1%) cases which is the highest in number followed by extensor which is 15(40.5%) cases. In only 2(5.4%) cases the planter reflex is not elicitable. Presence of infarct is found in 15(40.5%) cases which is the highest number. Cerebral edema and Presence of haemorrhage is found in 3(8.1%) cases in each. Leuko-encephalopathy is found in 2(5.4%) cases. Encephalopathy and Both infarct & haemorrhage is found in 1(2.7%) case of each. Normal CT scan findings of brain are found in 12(32.4%) cases.
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Affiliation(s)
- M N Alam
- Dr Abul Bashar Mohammad Nurul Alam, Assistant Professor, Department of Neurology, Jamalpur Medical College, Jamalpur, Bangladesh
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11
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Uddin M. Reconstructing three-dimensional helical structure with an X-ray free electron laser. J Appl Crystallogr 2016. [DOI: 10.1107/s1600576716000303] [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: 11/10/2022] Open
Abstract
Recovery of three-dimensional structure from single-particle X-ray scattering of completely randomly oriented diffraction patterns as predicted a few decades ago has been realized owing to the advent of the new emerging X-ray free electron laser (XFEL) technology. Since the world's first XFEL started operation in June 2009 at SLAC National Laboratory at Stanford, the first few experiments have been conducted on larger objects such as viruses. Many of the important structures of nature such as helical viruses or DNA consist of helical repetition of biological subunits. Hence development of a method for reconstructing helical structure from collected XFEL data has been a top research priority. This work describes the development of a method for solving helical structures such as tobacco mosaic virus from a set of randomly oriented simulated diffraction patterns exploiting the symmetry and Fourier space constraint of the diffraction volume.
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Abdullah-Al-Mamun M, Rahman M, Khan G, Uddin M, Razzaque S, Foisal J, Hasanuzzaman M, Rahman S, Alam M. A Morphological Study of Microfibrillated Cellulose Prepared from Waste Cotton Linter. ACTA ACUST UNITED AC 2016. [DOI: 10.9734/acsj/2016/27903] [Citation(s) in RCA: 6] [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: 11/09/2022]
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Noman AS, Uddin M, Rahman MZ, Nayeem MJ, Alam SS, Khatun Z, Wahiduzzaman M, Sultana A, Rahman ML, Ali MY, Barua D, Ahmed I, Islam MS, Aboussekhra A, Yeger H, Farhat WA, Islam SS. Overexpression of sonic hedgehog in the triple negative breast cancer: clinicopathological characteristics of high burden breast cancer patients from Bangladesh. Sci Rep 2016; 6:18830. [PMID: 26727947 PMCID: PMC4700415 DOI: 10.1038/srep18830] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 11/27/2015] [Indexed: 12/12/2022] Open
Abstract
Dysregulation of Hedgehog (Hh) signaling pathway has been documented in mammary gland development and breast cancer (BC) progression. Despite the remarkable progress in therapeutic interventions, BC related mortality in Bangladesh increased in the last decade. Triple negative breast cancer (TNBC) still presents a critical therapeutic challenge. Thus effective targeted therapy is urgently needed. In this study, we report the clinicopathological characteristics and prognosis of BC patients from Bangladesh. Routine immunohistochemical analysis and high throughput RNA-Seq data from the TCGA library were used to analyze the expression pattern and association of high and low level of Shh expression in a collection of BC patients with a long-term follow-up. High levels of Shh were observed in a subset of BC tumors with poor prognostic pathological features. Higher level of Shh expression correlated with a significantly poorer overall survival of patients compared with patients whose tumors expressed a low level of Shh. These data support the contention that Shh could be a novel biomarker for breast cancer that is involved in mediating the aggressive phenotype of BC. We propose that BC patients exhibiting a higher level of Shh expression, representing a subset of BC patients, would be amenable to Shh targeted therapy.
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Affiliation(s)
- A S Noman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M Uddin
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON, Canada
| | - M Z Rahman
- Department of Pathology, Chittagong Medical College Hospital, Chittagong, Bangladesh
| | - M J Nayeem
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - S S Alam
- Department of Genetic Engineering and Biotechnology, University of Chittagong, Chittagong, Bangladesh
| | - Z Khatun
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M Wahiduzzaman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - A Sultana
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M L Rahman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M Y Ali
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - D Barua
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - I Ahmed
- Department of Pathology, Chittagong Medical College Hospital, Chittagong, Bangladesh
| | - M S Islam
- Department of Pathology, Chittagong Medical College Hospital, Chittagong, Bangladesh
| | - A Aboussekhra
- Cancer Biology and Experimental Therapeutic Section, Division of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, KSA
| | - H Yeger
- Developmental and Stem Cell Biology, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - W A Farhat
- Developmental and Stem Cell Biology, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - S S Islam
- Cancer Biology and Experimental Therapeutic Section, Division of Molecular Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, KSA.,Developmental and Stem Cell Biology, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
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14
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Jahan M, Hasanuzzaman M, Mahbuba S, Leena K, Ahsan GU, Kuehl TJ, Uddin M. P52. Prevalence of preeclampsia in patients of pre-gestational diabetic pregnancy in Bangladesh. Pregnancy Hypertens 2015. [DOI: 10.1016/j.preghy.2015.07.104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Cawyer C, Yuen S, Pantho A, Drever N, Beeram M, Zawieja D, Kuehl T, Uddin M. Hyperglycemia Hinders First Trimester Cytotrophoblast Migration and Induces Apoptosis. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.569.3] [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: 11/11/2022]
Affiliation(s)
- C Cawyer
- Obstetrics and GynecologyBaylor Scott & White Health/TAMHSCTempleTexasUnited States
| | - S Yuen
- Prehealth Studies Baylor UniversityUnited States
| | - A Pantho
- College of Natural Sciences University of Texas at AustinUnited States
| | - N Drever
- Obstetrics and GynecologyBaylor Scott & White Health/TAMHSCTempleTexasUnited States
| | - M Beeram
- PediatricsBaylor Scott & White Health/TAMHSCUnited States
| | - D Zawieja
- Medical PhysiologyTAMHSCUnited States
| | - T Kuehl
- Obstetrics and GynecologyBaylor Scott & White Health/TAMHSCTempleTexasUnited States
- PediatricsBaylor Scott & White Health/TAMHSCUnited States
| | - M Uddin
- Obstetrics and GynecologyBaylor Scott & White Health/TAMHSCTempleTexasUnited States
- Prehealth Studies Baylor UniversityUnited States
- PediatricsBaylor Scott & White Health/TAMHSCUnited States
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16
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Uddin M, Hamid M. Pattern of Psychiatric Illness Among Women Attending Private Psychiatric Consultation Service in a Rural Area of Bangladesh. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)30258-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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17
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Islam SS, Mokhtari RB, Noman AS, Uddin M, Rahman MZ, Azadi MA, Zlotta A, van der Kwast T, Yeger H, Farhat WA. Sonic hedgehog (Shh) signaling promotes tumorigenicity and stemness via activation of epithelial-to-mesenchymal transition (EMT) in bladder cancer. Mol Carcinog 2015; 55:537-51. [PMID: 25728352 DOI: 10.1002/mc.22300] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [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: 06/15/2014] [Revised: 01/06/2015] [Accepted: 01/14/2015] [Indexed: 01/15/2023]
Abstract
Activation of the sonic hedgehog (Shh) signaling pathway controls tumorigenesis in a variety of cancers. Here, we show a role for Shh signaling in the promotion of epithelial-to-mesenchymal transition (EMT), tumorigenicity, and stemness in the bladder cancer. EMT induction was assessed by the decreased expression of E-cadherin and ZO-1 and increased expression of N-cadherin. The induced EMT was associated with increased cell motility, invasiveness, and clonogenicity. These progression relevant behaviors were attenuated by treatment with Hh inhibitors cyclopamine and GDC-0449, and after knockdown by Shh-siRNA, and led to reversal of the EMT phenotype. The results with HTB-9 were confirmed using a second bladder cancer cell line, BFTC905 (DM). In a xenograft mouse model TGF-β1 treated HTB-9 cells exhibited enhanced tumor growth. Although normal bladder epithelial cells could also undergo EMT and upregulate Shh with TGF-β1 they did not exhibit tumorigenicity. The TGF-β1 treated HTB-9 xenografts showed strong evidence for a switch to a more stem cell like phenotype, with functional activation of CD133, Sox2, Nanog, and Oct4. The bladder cancer specific stem cell markers CK5 and CK14 were upregulated in the TGF-β1 treated xenograft tumor samples, while CD44 remained unchanged in both treated and untreated tumors. Immunohistochemical analysis of 22 primary human bladder tumors indicated that Shh expression was positively correlated with tumor grade and stage. Elevated expression of Ki-67, Shh, Gli2, and N-cadherin were observed in the high grade and stage human bladder tumor samples, and conversely, the downregulation of these genes were observed in the low grade and stage tumor samples. Collectively, this study indicates that TGF-β1-induced Shh may regulate EMT and tumorigenicity in bladder cancer. Our studies reveal that the TGF-β1 induction of EMT and Shh is cell type context dependent. Thus, targeting the Shh pathway could be clinically beneficial in the ability to reverse the EMT phenotype of tumor cells and potentially inhibit bladder cancer progression and metastasis.
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Affiliation(s)
- S S Islam
- Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada.,Division of Urology, The Hospital for Sick Children, Toronto, ON, Canada
| | - R B Mokhtari
- Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - A S Noman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
| | - M Uddin
- Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - M Z Rahman
- Department of Pathology, Chittagong Medical College, Chittagong, Bangladesh
| | - M A Azadi
- Faculty of Biological Sciences, University of Chittagong, Chittagong, Bangladesh
| | - A Zlotta
- Department of Uro-Oncology, Mount Sinai Hospital, Toronto, ON, Canada
| | - T van der Kwast
- Department of Pathology, Laboratory Medicine Program, University Health Network, Toronto, ON, Canada
| | - H Yeger
- Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - W A Farhat
- Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada.,Division of Urology, The Hospital for Sick Children, Toronto, ON, Canada
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18
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O'Rielly D, Uddin M, Mostafa A, Codner D, Hackett D, Haroon N, Inman R, Rahman P. FRI0161 Sec16a Gene Deletion in A Large Axial Spondyloarthritis Family. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3327] [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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19
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Uddin M, O'Rielly D, Codner D, Hasan M, Gladman D, Rahman P. FRI0165 The Molecular Convergence of Non-Hla Ankylosing Spondylitis Risk Genes with Autoimmune Diseases. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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20
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Affiliation(s)
- M. Uddin
- Alberta Innovates - Technology Futures, Edmonton, Alberta T6N 1E4, Canada
| | - D. Coombe
- Computer Modeling Group Ltd., Calgary, Alberta T2L 2A6, Canada
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21
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Muhsin ZF, Rehman A, Altameem A, Saba T, Uddin M. Improved quadtree image segmentation approach to region information. The Imaging Science Journal 2013. [DOI: 10.1179/1743131x13y.0000000063] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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22
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Uddin M, Quasem MA, Rhaman ML. Regional specialisation of the ganglion cell density in the retina of the native duck (Anas platyrhynchos) of Bangladesh. Anat Histol Embryol 2013; 42:471-8. [PMID: 23931677 DOI: 10.1111/ahe.12079] [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: 11/17/2012] [Accepted: 06/13/2013] [Indexed: 11/27/2022]
Abstract
In this study, retinal whole-mount specimens were prepared and stained with 0.1% cresyl violet for the ganglion cell study in the native duck (Anas platyrhynchos). The total number, distribution and size of these cells were determined in different retinal regions. The mean total number of ganglion cells was 1 598 501. The retinal area centralis had the highest ganglion cell density with 11 200 cells/mm(2) . Number of ganglion cell bodies was the highest in temporal area, followed by dorsal, nasal and ventral areas. Ganglion cell size ranged from 5.25 to 80 μm(2) . In the temporal and nasal region, most of the cells were ranged from 15 to 25 μm(2) , and in the dorsal and ventral region, most of the cells were ranged from 12 to 25 μm(2) . There was a marked trend for the retinal ganglion cell size to increase as the population density decrease towards the periphery. A population of small ganglion cells persisted into the central area just above the optic disc and the largest soma area was in the ventral zone of the retina. Thus, the specialisation of ganglion cell densities and their sizes support the notion that the conduction of visual information towards the brain from all regions of the retina is not uniform, and the central area is the fine quality area for vision in native duck.
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Affiliation(s)
- M Uddin
- Department of Anatomy and Histology, Chittagong Veterinary and Animal Sciences University, Chittagong, 4202, Bangladesh
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23
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Meyers JL, Cerdá M, Galea S, Keyes KM, Aiello AE, Uddin M, Wildman DE, Koenen KC. Interaction between polygenic risk for cigarette use and environmental exposures in the Detroit Neighborhood Health Study. Transl Psychiatry 2013; 3:e290. [PMID: 23942621 PMCID: PMC3756291 DOI: 10.1038/tp.2013.63] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 06/04/2013] [Accepted: 07/10/2013] [Indexed: 01/31/2023] Open
Abstract
Cigarette smoking is influenced both by genetic and environmental factors. Until this year, all large-scale gene identification studies on smoking were conducted in populations of European ancestry. Consequently, the genetic architecture of smoking is not well described in other populations. Further, despite a rich epidemiologic literature focused on the social determinants of smoking, few studies have examined the moderation of genetic influences (for example, gene-environment interactions) on smoking in African Americans. In the Detroit Neighborhood Health Study (DNHS), a sample of randomly selected majority African American residents of Detroit, we constructed a genetic risk score (GRS), in which we combined top (P-value <5 × 10(-7)) genetic variants from a recent meta-analysis conducted in a large sample of African Americans. Using regression (effective n=399), we first tested for association between the GRS and cigarettes per day, attempting to replicate the findings from the meta-analysis. Second, we examined interactions with three social contexts that may moderate the genetic association with smoking: traumatic events, neighborhood social cohesion and neighborhood physical disorder. Among individuals who had ever smoked cigarettes, the GRS significantly predicted the number of cigarettes smoked per day and accounted for ~3% of the overall variance in the trait. Significant interactions were observed between the GRS and number of traumatic events experienced, as well as between the GRS and average neighborhood social cohesion; the association between genetic risk and smoking was greater among individuals who had experienced an increased number of traumatic events in their lifetimes, and diminished among individuals who lived in a neighborhood characterized by greater social cohesion. This study provides support for the utility of the GRS as an alternative approach to replication of common polygenic variation, and in gene-environment interaction, for smoking behaviors. In addition, this study indicates that environmental determinants have the potential to both exacerbate (traumatic events) and diminish (neighborhood social cohesion) genetic influences on smoking behaviors.
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Affiliation(s)
- J L Meyers
- Department of Epidemiology, Columbia University, New York, NY 10032, USA.
| | - M Cerdá
- Department of Epidemiology, Columbia University, New York, NY, USA
| | - S Galea
- Department of Epidemiology, Columbia University, New York, NY, USA
| | - K M Keyes
- Department of Epidemiology, Columbia University, New York, NY, USA
| | - A E Aiello
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA
| | - M Uddin
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, USA,Department of Psychiatry and Behavioral Neurosciences, Wayne State University, Detroit, MI, USA
| | - D E Wildman
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, USA
| | - K C Koenen
- Department of Epidemiology, Columbia University, New York, NY, USA
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24
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Abstract
Postprocessing of diffraction patterns of completely randomly oriented helical particles, as measured, for example, in so-called "diffract-and-destroy" experiments with an x-ray free electron laser can yield "fiber diffraction" patterns expected of fibrous bundles of the particles. This will allow "single-axis alignment" to be performed computationally, thus obviating the need to do this by experimental means such as forming fibers and laser or flow alignment. The structure of such particles may then be found by either iterative phasing methods or standard methods of fiber diffraction.
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Affiliation(s)
- H-C Poon
- Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211, USA
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Uddin M, O'Reilly D, Inman R, Maksymowych W, Gladman D, Hamilton S, Yazdani R, Rahman P. OP0095 Customized CNV microarray identified UGT2B17 as a novel susceptibility gene associated with familial ankylosing spondylitis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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26
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Eickmeier O, Seki H, Haworth O, Hilberath JN, Gao F, Uddin M, Croze RH, Carlo T, Pfeffer MA, Levy BD. Aspirin-triggered resolvin D1 reduces mucosal inflammation and promotes resolution in a murine model of acute lung injury. Mucosal Immunol 2013; 6:256-66. [PMID: 22785226 PMCID: PMC3511650 DOI: 10.1038/mi.2012.66] [Citation(s) in RCA: 148] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Acute lung injury (ALI) is a severe illness with excess mortality and no specific therapy. Protective actions were recently uncovered for docosahexaenoic acid-derived mediators, including D-series resolvins. Here, we used a murine self-limited model of hydrochloric acid-induced ALI to determine the effects of aspirin-triggered resolvin D1 (AT-RvD1; 7S,8R,17R-trihydroxy-4Z,9E,11E,13Z,15E,19Z-docosahexaenoic acid) on mucosal injury. RvD1 and its receptor ALX/FPR2 were identified in murine lung after ALI. AT-RvD1 (~0.5-5 μg kg(-1)) decreased peak inflammation, including bronchoalveolar lavage fluid (BALF) neutrophils by ~75%. Animals treated with AT-RvD1 had improved epithelial and endothelial barrier integrity and decreased airway resistance concomitant with increased BALF epinephrine levels. AT-RvD1 inhibited neutrophil-platelet heterotypic interactions by downregulating both P-selectin and its ligand CD24. AT-RvD1 also significantly decreased levels of BALF pro-inflammatory cytokines, including interleukin (IL)-1β, IL-6, Kupffer cells, and tumor necrosis factor-α, and decreased nuclear factor-κB-phosphorylated p65 nuclear translocation. Taken together, these findings indicate that AT-RvD1 displays potent mucosal protection and promotes catabasis after ALI.
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Affiliation(s)
- O. Eickmeier
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - H. Seki
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - O. Haworth
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - JN. Hilberath
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - F. Gao
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - M. Uddin
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - RH. Croze
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - T. Carlo
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - MA. Pfeffer
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - BD. Levy
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA,Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA,Corresponding author: Bruce D. Levy, MD, Pulmonary and Critical Care Medicine, Department of Internal Medicine, Brigham and Women’s Hospital and Harvard Medical School, Harvard Institutes of Medicine Bldg, 77 Avenue Louis Pasteur (HIM 855), Boston, MA 02115, USA, Phone: 617-525-5407, Fax: 617-525-5413,
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Ahasan ASML, Islam MS, Kabria ASMG, Rahman ML, Hassan MM, Uddin M. Major Variation in Branches of the Abdominal Aorta in New Zealand White Rabbit (Orycotolagus Cuniculus). ACTA ACUST UNITED AC 2013. [DOI: 10.3329/ijns.v2i4.13218] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The aim of the present study was to investigate the arrangement and major vascular variation of abdominal aorta in NZW rabbit. A total of 28 healthy adult rabbits (14 males and 14 females) with an average (1.3 ± 0.5kg) body weight were used in this study. Deep surgical anaesthesia was done by using combination of xylazine and ketamine at the doses of 10mg/kg and 40mg/kg body weight respectively, and was sacrificed by bleeding through the right ventricle of the heart. Cannulation of the thoracic aorta and stained latex (added with ammonium water and red carmine stain) injection were performed, followed by 10% neutral buffered formalin. Asymmetry of the even branches with their distribution and the way of departure of the arteries from the abdominal aorta were observed. However, double pair ovarian arteries were found in a single animal. The diameter of the caudal mesenteric artery showed significant (p?0.05) difference between male and female. In case of male and female, the variability of the origin (number and level of origin) of testicular, ovarian and profound iliac circumflex arteries was also observed. DOI: http://dx.doi.org/10.3329/ijns.v2i4.13218 International Journal of Natural Sciences (2012), 2(4) 91-98
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Khan MA, Dixit K, Uddin M, Malik A, Alam K. Role of peroxynitrite-modified H2A histone in the induction and progression of rheumatoid arthritis. Scand J Rheumatol 2012; 41:426-33. [DOI: 10.3109/03009742.2012.698300] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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29
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Al-Dhahir W, Uddin M. Unusual case of frontal sinus fistula. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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Uddin M, Rahman ML, Alam MA, Ahasan ASML. Anatomical study on origin, course and distribution of cranial and caudal mesenteric arteries in the White New Zealand rabbit (Orycotolagus cuniculus). ACTA ACUST UNITED AC 2012. [DOI: 10.3329/ijns.v2i2.11386] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The present study was carried out on fifteen healthy adult White New Zealand rabbit (Orycotolagus cuniculus) to clarify the obscure mesenteric arteries, which and their branches which are usually involved in intestinal surgery. The mesenteric artery is a high caliber vessel, 2cm in length dependent on the abdominal aorta, right below the emergence of the vessels destined for the liver and stomach. The animals were sacrificed, injecting diazepam (30 mg/kg) in jugular vein. Cannulation of the abdominal aorta, perfusion with warmed water (40ºC) and stained latex injection (Neoprene 450, Capitol Scientific, Austin, U.S.A, Red carmine stain) were performed, followed by fixation. With formalin (10%) the dissection and photographic documents (Casio Cyber-shot, 12.1 mega pixels) made it possible to systemize the arteries and define the vascular patterns of the viscera. The results prone that the cranial mesenteric artery of the White New Zealand rabbit (Orycotolagus cuniculus) arose from the abdominal aorta, at the level of the second lumbar vertebra, entered the cranial mesentery forming its root, then proceeded caudoventrally in the mesojejunum and continued as the last cecal artery. The cranial mesenteric artery gave off: - Caudal pancreaticoduodenal artery to the right lobe of the pancreas and the descending and ascending parts of the duodenum. Middle colic artery, a small vessel (frequently two) arising from the left wall and passing to the transverse colon, Eighteen to twenty jejunal arteries, Ileocecocolic artery to the ileum, cecum, ascending colon, transverse colon and the cranial part of the descending colon. The caudal mesenteric artery arose from the abdominal aorta at the level of the caudal border of the root of the 6th lumbar transverse process, passed caudoventrally in the descending mesocolon, then divided into: left colic artery to the caudal two thirds of the descending colon, and cranial rectal artery to the cranial segment of the rectum. The obtained results were compared with their corresponding in the domestic animals, especially the domestic carnivores and laboratory animals. DOI: http://dx.doi.org/10.3329/ijns.v2i2.11386 International Journal of Natural Sciences (2012), 2(2):54-59
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Abstract
BACKGROUND A defining feature of the US economic downturn of 2008-2010 was the alarming rate of home foreclosure. Although a substantial number of US households have experienced foreclosure since 2008, the effects of foreclosure on mental health are unknown. We examined the effects of foreclosure on psychiatric symptomatology in a prospective, population-based community survey. METHOD Data were drawn from the Detroit Neighborhoods and Health Study (DNHS), waves 1 and 2 (2008-2010). A probability sample of predominantly African-American adults in Detroit, Michigan participated (n=1547). We examined the association between home foreclosure between waves 1 and 2 and increases in symptoms of DSM-IV major depression and generalized anxiety disorder (GAD). RESULTS The most common reasons for foreclosure were an increase in monthly payments, an increase in non-medical expenses and a reduction in family income. Exposure to foreclosure between waves 1 and 2 predicted symptoms of major depression and GAD at wave 2, controlling for symptoms at wave 1. Even after adjusting for wave 1 symptoms, sociodemographics, lifetime history of psychiatric disorder at wave 1 and exposure to other financial stressors between waves 1 and 2, foreclosure was associated with an increased rate of symptoms of major depression [incidence density ratio (IDR) 2.4, 95% confidence interval (CI) 1.6-3.6] and GAD (IDR 1.9, 95% CI 1.4-2.6). CONCLUSIONS We provide the first prospective evidence linking foreclosure to the onset of mental health problems. These results, combined with the high rate of home foreclosure since 2008, suggest that the foreclosure crisis may have adverse effects on the mental health of the US population.
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Affiliation(s)
- K A McLaughlin
- Division of General Pediatrics, Children's Hospital Boston, Harvard Medical School, Boston, MA 02115, USA.
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Saldin DK, Poon HC, Schwander P, Uddin M, Schmidt M. Reconstructing an icosahedral virus from single-particle diffraction experiments. Opt Express 2011; 19:17318-35. [PMID: 21935096 DOI: 10.1364/oe.19.017318] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The first experimental data from single-particle scattering experiments from free electron lasers (FELs) are now becoming available. The first such experiments are being performed on relatively large objects such as viruses, which produce relatively low-resolution, low-noise diffraction patterns in so-called "diffract-and-destroy" experiments. We describe a very simple test on the angular correlations of measured diffraction data to determine if the scattering is from an icosahedral particle. If this is confirmed, the efficient algorithm proposed can then combine diffraction data from multiple shots of particles in random unknown orientations to generate a full 3D image of the icosahedral particle. We demonstrate this with a simulation for the satellite tobacco necrosis virus (STNV), the atomic coordinates of whose asymmetric unit is given in Protein Data Bank entry 2BUK.
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Affiliation(s)
- D K Saldin
- Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA.
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Uddin M, Koenen KC, Aiello AE, Wildman DE, de los Santos R, Galea S. Epigenetic and inflammatory marker profiles associated with depression in a community-based epidemiologic sample. Psychol Med 2011; 41:997-1007. [PMID: 20836906 PMCID: PMC3065166 DOI: 10.1017/s0033291710001674] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Revised: 07/21/2010] [Accepted: 07/31/2010] [Indexed: 12/14/2022]
Abstract
BACKGROUND Recent work suggests that epigenetic differences may be associated with psychiatric disorders. Here we investigate, in a community-based sample, whether methylation profiles distinguish between individuals with and without lifetime depression. We also investigate the physiologic consequences that may be associated with these profiles. METHOD Using whole blood-derived genomic DNA from a subset of participants in the Detroit Neighborhood Health Study (DNHS), we applied methylation microarrays to assess genome-wide methylation profiles for over 14 000 genes in 33 persons who reported a lifetime history of depression and 67 non-depressed adults. Bioinformatic functional analyses were performed on the genes uniquely methylated and unmethylated in each group, and inflammatory biomarkers [interleukin (IL)-6 and C-reactive protein (CRP)] were measured to investigate the possible functional significance of the methylation profiles observed. RESULTS Uniquely unmethylated gene sets distinguished between those with versus without lifetime depression. In particular, some processes (e.g. brain development, tryptophan metabolism) showed patterns suggestive of increased methylation among individuals with depression whereas others (e.g. lipoprotein) showed patterns suggestive of decreased methylation among individuals with depression. IL-6 and CRP levels were elevated among those with lifetime depression and, among those with depression only, IL-6 methylation showed an inverse correlation with circulating IL-6 and CRP. CONCLUSIONS Genome-wide methylation profiles distinguish individuals with versus without lifetime depression in a community-based setting, and show coordinated signals with pathophysiological mechanisms previously implicated in the etiology of this disorder. Examining epigenetic mechanisms in concert with other dynamic markers of physiologic functioning should improve our understanding of the neurobiology of depression.
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Affiliation(s)
- M Uddin
- Center for Social Epidemiology and Population Health, Department of Epidemiology, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, MI 48109, USA.
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Khan S, No author NA, No author NA, Hassan M, Uddin M, Rahman Z, Epstein G. Caesarean of Lion (Panthera leo) at Dulahajra Safari Park, Bangladesh. Open Vet J 2011. [DOI: 10.5455/ovj.2011.v1.i0.p10] [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: 11/06/2022] Open
Abstract
A six years eight months pregnant lioness at the Dulahajara Safari Park, Chakoria, Cox�s Bazar, Bangladesh, was presented with dystocia. This paper described the pre-, intra- and postoperative procedures including anesthetic protocol carried out and performing a caesarean section to remove dead fetuses and the successful recovery of the lioness without complications.
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Affiliation(s)
- K C Koenen
- Departments of Society, Human Development, and Health and Epidemiology, Harvard School of Public Health, Boston, MA, USASchool of Public Health, University of Michigan, Ann Arbor, MI, USAMedical University of South Carolina, Charleston, SC, USAGelman Professor and Chair of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - M Uddin
- Departments of Society, Human Development, and Health and Epidemiology, Harvard School of Public Health, Boston, MA, USASchool of Public Health, University of Michigan, Ann Arbor, MI, USAMedical University of South Carolina, Charleston, SC, USAGelman Professor and Chair of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - A B Amstadter
- Departments of Society, Human Development, and Health and Epidemiology, Harvard School of Public Health, Boston, MA, USASchool of Public Health, University of Michigan, Ann Arbor, MI, USAMedical University of South Carolina, Charleston, SC, USAGelman Professor and Chair of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - S Galea
- Departments of Society, Human Development, and Health and Epidemiology, Harvard School of Public Health, Boston, MA, USASchool of Public Health, University of Michigan, Ann Arbor, MI, USAMedical University of South Carolina, Charleston, SC, USAGelman Professor and Chair of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
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Bhatti FA, Uddin M, Ahmed A, Bugert P. Human platelet antigen polymorphisms (HPA-1, -2, -3, -4, -5 and -15) in major ethnic groups of Pakistan. Transfus Med 2010; 20:78-87. [DOI: 10.1111/j.1365-3148.2009.00982.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Uddin M, Cherkowski GC, Liu G, Zhang J, Monto AS, Aiello AE. Demographic and socioeconomic determinants of influenza vaccination disparities among university students. J Epidemiol Community Health 2009; 64:808-13. [DOI: 10.1136/jech.2009.090852] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [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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Huda M, Islam M, Rahman M, Haque A, Uddin M. Studies on the overall safety aspects during irradiation of TeO2 in the central thimble of the TRIGA research reactor. ANN NUCL ENERGY 2009. [DOI: 10.1016/j.anucene.2008.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Uddin M, Seumois G, Lau LC, Rytila P, Davies DE, Djukanovic R. Enhancement of neutrophil function by the bronchial epithelium stimulated by epidermal growth factor. Eur Respir J 2007; 31:714-24. [PMID: 18094008 DOI: 10.1183/09031936.00144307] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The bronchial epithelium is an important physical barrier that regulates physiological processes including leukocyte trafficking. The aim of the present study was to elucidate the mechanisms whereby the bronchial epithelium, stimulated by epidermal growth factor (EGF) as part of a response to acute or chronic injury, could activate and chemoattract human neutrophils. Subconfluent human bronchial epithelial (16HBE) cells were stimulated with EGF to mimic the in vivo events after injury. The effect of the resulting EGF-conditioned media (CM) was compared with that of basal-CM with respect to neutrophil activation and chemotaxis. Such findings were then confirmed using primary bronchial epithelial cells (PBECs) from healthy volunteers. EGF-CM from 16HBE cells caused increased expression of CD11b/CD66b and CD62L loss on neutrophils when compared with basal-CM. EGF-CM contained significant neutrophil chemotactic activity involving granulocyte-macrophage colony-stimulating factor and interleukin-8 that was potentiated by leukotriene B(4). This was dependent on neutrophil phosphatidylinositol-3-kinase activation and Akt phosphorylation, with partial regulation by phospholipase D, but not mammalian target of rapamycin. Consistent with these observations, EGF-CM derived from PBECs displayed increased chemotactic activity. The present results suggest that the enhanced chemotactic activity of the epidermal growth factor-conditioned epithelium can enhance neutrophil-mediated immunity during acute injury, while during continued injury and repair, as in chronic asthma, this could contribute to persistent neutrophilic inflammation.
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Affiliation(s)
- M Uddin
- Allergy and Inflammation Research, Division of Infection, Inflammation and Repair, School of Medicine, Southampton, UK.
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Rytilä P, Plataki M, Bucchieri F, Uddin M, Nong G, Kinnula VL, Djukanovic R. Airway neutrophilia in COPD is not associated with increased neutrophil survival. Eur Respir J 2006; 28:1163-9. [PMID: 16971404 DOI: 10.1183/09031936.00149005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Neutrophilic airway inflammation is a prominent feature of chronic obstructive pulmonary disease (COPD) and correlates with disease severity. The mechanisms that determine the extent of neutrophilia could involve increased influx or prolonged survival of neutrophils. The aim of the study was to assess whether neutrophil pro-survival mechanisms are increased in the airways of subjects with COPD owing to the presence of anti-apoptotic factors in the bronchial lining fluid. Induced sputum samples were collected from 20 subjects with stable COPD, 14 healthy smokers and 14 healthy controls. Quantification of apoptotic neutrophils was based on typical morphological cell changes. Anti-apoptotic, pro-survival activity in the sputum was studied by culturing peripheral blood neutrophils with the fluid phase of induced sputum. Apoptosis was assessed both by morphology and flow cytometry using Annexin V/7-aminoactinomycin D staining. COPD patients and healthy smokers had significantly higher percentages of sputum neutrophils than healthy controls. However, there were no significant differences between the three subject groups in either the proportion of apoptotic neutrophils in sputum or the in vitro anti-apoptotic activity detected in the sputum fluid phase. In conclusion, prolonged survival of neutrophils in sputum is not a feature of chronic obstructive pulmonary disease and cannot explain the increased numbers of airway neutrophils in this disease.
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Affiliation(s)
- P Rytilä
- Division of Infection, Inflammation and Repair, University of Southampton, Southampton, UK.
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Fisher M, Zhu J, Uddin M, Grindstaff P. P07.16 Effect of stimulus intensity and stimulus rate on F-wave latencies. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.285] [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: 11/26/2022]
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Nessa A, Latif SA, Uddin M. Effects of low dose oral contraceptives on serum total cholesterol, TAG, HDL-C & LDL-C levels in contraceptive users. Mymensingh Med J 2005; 14:26-8. [PMID: 15695949] [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: 05/01/2023]
Abstract
This study was done to appraise the effects of low-dose oral contraceptives (OC(s)) containing synthetic estrogen ethinyl estradiol and synthetic progestin levonorgestrel on serum total cholesterol, TAG, HDL-C and LDL-C levels. Ninety young women within reproductive age group were picked for this study. Sixty women using low-dose oral contraceptives served as experimental group and thirty age matched hormonal contraceptive non-users were selected for control group. Experimental group was again subdivided into OCP users for last one-year group, three-year groups and five-year group. The results showed that there were no significant differences on most of the study parameters between users and non-users women. But there was a significant accession of serum triacylglycerol only in OCP user groups. The results hint that low-dose oral contraceptives regimens partly impaired the lipid metabolism. So, the safeness of low-dose OCP used in National Population Control Program is further inspired. The value of studied parameters for serial longer continuation of OCP uses need to be renegotiated.
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Affiliation(s)
- A Nessa
- Department of Physiology, Mymensingh Medical College, Mymensingh.
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Abstract
Kallikreins are a group of specific serine proteases and are an integral part of kallikrein-kinin system. The kallikrein-kinin system is hypotensive in nature and counteracts with the renin-angiotensin system in the maintenance of normal blood pressure. So far, four kallikrein-like enzymes, namely, mK9, mK13, mK22, and mK26, have been known to convert the inactive pro-renin into biologically active renin. Some of these enzymes are induced by the thyroid hormone. In the proposed study, we investigated the effects of thyroid hormone on the expression of genes for mk9, mk13, and mk22 enzymes. We used guinea pigs as models because these animals share many characteristics in common to humans. Male adult guinea pigs were intramuscularly injected with 2 mg/kg body weight of thyronine. Forty-eight hours following the last injection, the liver was processed for Northern blot analysis using labeled mK9, mK13, and mK22 specific RNA probes. Only mK9 was found to be transcriptionally regulated by the hormone.
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Affiliation(s)
- S K Das
- Department of Biochemistry, Meharry Medical College, 1005 D.B. Todd Boulevard, Nashville, TN 37208, USA.
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Abstract
Synthetic nonbasic peptides based on the type I repeats of thrombospondin (TSP) and four peptides corresponding to the predicted basic clusters in lipoprotein lipase (LPL) have been analyzed for heparin binding. In the present report we examine the structural requirement for the binding of these peptides to heparin-Sepharose column. The peptide containing the sequence Phe-Ser-Trp-Ser-Asp-Trp-Trp-Ser (residues 388-395 in lipoprotein lipase, which include the consensus TSP type I sequence) showed strong binding to heparin. Both the first and second Trp residues in this sequence were essential for tight heparin binding. Substitution of either of the Trp residues by an Ala resulted in the complete loss of heparin binding. The peptides representing the four basic cluster regions of lipoprotein lipase showed variable heparin binding. Strong retention was observed for peptides representing cluster 1 (residues 261-287) and cluster 3 (residues 147-151) peptides followed by cluster 2 (residues 290-302) peptide. A peptide corresponding to LPL cluster 4 (residues 405-414) did not show binding to heparin column. The present study confirms the presence of specific heparin-binding sites in LPL. Furthermore, this study also demonstrates the potential use of synthetic peptides to investigate the interaction between peptides and heparin as an alternative approach to site-directed mutagenesis in selected regions of large protein molecules. The affinity of these peptides toward heparin can be explored to block molecular interactions at these specific sites or to carry and deliver other coupled molecules at the site(s) of attachment of these peptides for therapeutic applications.
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Affiliation(s)
- O U Beg
- Department of Microbiology, Meharry Medical College, Nashville, Tennessee 37208, USA.
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Uddin M, Beg OU. Cleavage specificities of individual members of kallikrein family of proteins on synthetic peptide containing the bradykinin sequence. J Protein Chem 1998; 17:291-4. [PMID: 9588954 DOI: 10.1023/a:1022597004834] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We have analyzed the effect on bond specificity of various isolated members of the mouse kallikrein family of proteins on a synthetic peptide containing the bradykinin sequence. The cleavage pattern shows the selected specificity of these proteases toward the synthetic peptide. The Phe-His bond (positions 11-12) in the synthetic peptide was favorably cleaved by most of the members in this family, including gamma nerve growth factor. On the other hand, the Lys-Arg bond (position 3-4) was found to be susceptible only to gamma-NGF. The combination of these cleavages could result in the degradation of bradykinin in vivo.
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Affiliation(s)
- M Uddin
- Department of Anatomy and Physiology, Meharry Medical College, Nashville, Tennessee 37208, USA
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Abstract
Salivary lysozyme levels were measured to determine the effect of stress on innate mucosal immunity. In the first study perceived stress levels of 39 participants were using a stress/arousal checklist questionnaire. Salivary lysozyme levels were found to show a negative correlation (r = -.477, p < .01) with the perceived stress level. In a second study, salivary lysozyme concentrations were measured during periods of high and low stress in the form of an actual stressor--final year examinations. The concentration of lysozyme was found to be significantly (p < .05) lower in the sample taken before the examination when the students were awaiting entry into the examination hall compared to the levels after completion of all examinations. These results indicate that salivary lysozyme concentrations are sensitive to psychological stress and could be utilized as a potential marker in studies looking at the effects of stress on immunity. Because the usefulness of sIgA as a marker has been questioned, the use of salivary lysozyme as a noninvasive index of mucosal immunity warrants further investigation.
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Affiliation(s)
- S Perera
- Biomedical Sciences Division, School of Health Sciences, University of Wolverhampton, West Midlands, England
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Abstract
The effects of daily late afternoon injections of melatonin on the in situ activity of tyrosine hydroxylase (TH) were examined in the median eminence/arcuate region of the mediobasal hypothalamus (MBH) and the neurointermediate lobe (NIL) of the male Syrian hamster. TH activity was determined in tissue extracts by measuring the accumulation of L-DOPA following administration of the dopa decarboxylase inhibitor, NSD-1015. After 9 weeks of melatonin treatment, highly significant increases in the activity of MBH TH were demonstrated over a 24 hr period, compared to saline-treated controls. Melatonin-induced elevations in TH occurred concomitantly with decreases in tuberoinfundibular dopamine (TIDA) and tuberohypophyseal dopamine (THDA) concentrations. Similar findings were observed in castrated hamsters, indicating that the melatonin-induced increase in TH was not secondary to melatonin-induced changes in circulating levels of gonadal hormones. These data led to the interpretation that melatonin treatment elevated TIDA synthesis either through a direct action on the arcuate nuclei or on neurons impinging on these nuclei.
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Affiliation(s)
- N A Alexiuk
- Department of Anatomy, University of Manitoba, Winnipeg, Canada
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