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Wang J, Huang Q, Li N, Tan G, Chen L, Zhou J. Triggers of migraine and tension-type headache in China: a clinic-based survey. Eur J Neurol 2013; 20:689-96. [PMID: 23356519 DOI: 10.1111/ene.12039] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 10/11/2012] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND PURPOSE Identification of the trigger factors of headache could be an important aspect of preventive management, but the characteristics of primary headache triggers in China are unknown. This study was performed to estimate the frequencies of the putative headache triggers, which are endorsed by patients with migraine and tension-type headache (TTH). METHODS From July 2011 to December 2011, a cross-sectional survey was conducted in the neurological clinic of a tertiary care hospital in Chongqing. All consecutive patients with the chief complaint of headache were interviewed by a board-certified headache specialist. The diagnoses were made according to International Classification of Headache Disorders - 2nd edition. Patients with migraine and TTH were recruited. RESULTS The number of investigated patients was 1219, of whom 394 were migraine and 344 were TTH; and 80.2% migraineurs and 67.4% TTH patients reported trigger factors. The most common triggers for both migraine and TTH were sleep disturbance, negative affect and sunlight. Menstrual cycle (OR 3.6, 95%CI 1.2, 11.2), change of the weather (OR 3.1, 95%CI 1.9, 4.8), noise (OR 2.2, 95%CI 1.1, 4.4) and alcohol (OR 1.8, 95%CI 0.7, 1.8) were more associated with migraineurs. Negative affect was more associated with TTH (OR 2.0, 95%CI 1.3, 2.9). CONCLUSIONS Trigger factors were frequent among both migraine and TTH patients. Avoidance of all headache triggers is impractical. Learning to cope with triggers is important to headache prevention.
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Zvereva EA, Savelieva OA, Titov YD, Evstigneeva MA, Nalbandyan VB, Kao CN, Lin JY, Presniakov IA, Sobolev AV, Ibragimov SA, Abdel-Hafiez M, Krupskaya Y, Jähne C, Tan G, Klingeler R, Büchner B, Vasiliev AN. A new layered triangular antiferromagnet Li4FeSbO6: spin order, field-induced transitions and anomalous critical behavior. Dalton Trans 2013; 42:1550-66. [DOI: 10.1039/c2dt31938a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chia D, Lu J, Leong C, Wong L, Tan G, Tey J. Efficacy of Palliative Radiation Therapy in Symptomatic Rectal Cancer in the Modern Era. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Alonso S, Tan G, Ng J, Tan K, Angeli V, Moochhala S, Ooi E. Hypertonic saline controls Dengue-induced vascular leakage in a mouse model. Int J Infect Dis 2012. [DOI: 10.1016/j.ijid.2012.05.379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Tan G, Yang J. Abstract No. 152: Evaluation of the effect on the quantity of endometrial integrin ανβ3 and microvessel density: an experimental study to guinea pigs with UAE. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Sullivan MB, Coleman ML, Quinlivan V, Rosenkrantz JE, DeFrancesco AS, Tan G, Fu R, Lee JA, Waterbury JB, Bielawski JP, Chisholm SW. Portal protein diversity and phage ecology. Environ Microbiol 2011. [DOI: 10.1111/j.1462-2920.2011.02616.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wilkinson-Berka JL, Tan G, Binger KJ, Sutton L, McMaster K, Deliyanti D, Perera G, Campbell DJ, Miller AG. Aliskiren reduces vascular pathology in diabetic retinopathy and oxygen-induced retinopathy in the transgenic (mRen-2)27 rat. Diabetologia 2011; 54:2724-35. [PMID: 21755314 DOI: 10.1007/s00125-011-2239-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Accepted: 06/13/2011] [Indexed: 10/18/2022]
Abstract
AIM/HYPOTHESIS We examined whether the renin inhibitor, aliskiren, provides similar or greater protection than ACE inhibition from non-proliferative diabetic retinopathy and from the proliferative neoangiogenesis of oxygen-induced retinopathy. METHODS Transgenic (mRen-2)27 rats, which overexpress mouse renin and angiotensin in extra-renal tissues, were studied. For diabetic studies, non-diabetic, diabetic (streptozotocin, 55 mg/kg), diabetic + aliskiren (10 mg kg(-1) day(-1), pump), or diabetic + lisinopril (10 mg kg(-1) day(-1), drinking water) rats were evaluated over 16 weeks. For oxygen-induced retinopathy studies, rats were exposed to 80% oxygen (22 h/day) from postnatal days 0 to 11, and then room air from postnatal days 12 to 18. Aliskiren (10 or 30 mg kg(-1) day(-1), pump) or lisinopril (10 mg kg(-1) day(-1), drinking water) was administered during retinopathy development between postnatal days 12 and 18. RESULTS Systolic BP in diabetic (mRen-2)27 rats was reduced with 10 mg kg(-1) day(-1) aliskiren, but only lisinopril normalised systolic blood pressure. In diabetic (mRen-2)27 rats, 10 mg kg(-1) day(-1) aliskiren and lisinopril reduced retinal acellular capillaries and leucostasis to non-diabetic levels. In oxygen-induced retinopathy, neoangiogenesis and retinal inflammation (leucostasis, ED-1 immunolabelling) were partially reduced by 10 mg kg(-1) day(-1) aliskiren and normalised by 30 mg kg(-1) day(-1) aliskiren, whereas lisinopril normalised neoangiogenesis and reduced leucostasis and ED-1 immunolabelling. Aliskiren and lisinopril normalised retinal vascular endothelial growth factor expression; however, only aliskiren reduced intercellular adhesion molecule-1 to control levels. CONCLUSIONS/INTERPRETATION Aliskiren provided similar or greater retinal protection than ACE inhibition and may be a potential treatment for diabetic retinopathy.
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Ong HS, Tan G, Chew WYC. Treatment of scaphoid non-union with 1,2 intercompartmental supraretinacular artery (1,2 ICSRA) vascularised graft. Singapore Med J 2011; 52:658-661. [PMID: 21947142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
INTRODUCTION The purpose of this paper is to share the outcome of cases of scaphoid non-union treated with 1,2 intercompartmental supraretinacular artery (1,2 ICSRA) vascularised graft at our institution, as well as to identify the possible factors for the failure of the procedure. METHODS This was a retrospective review of 13 cases of scaphoid fracture non-union treated with 1,2 ICSRA vascularised bone grafting from October 2000 to March 2003. A clinical and radiological review was conducted. Linear regression was performed in order to identify the factors associated with a negative outcome. RESULTS Out of the 13 patients with scaphoid non-union, ten (77 percent) had avascular necrosis of the proximal pole. The patients were followed up for a mean duration of 13 (range 3-28) months. Ten out of the 13 (77 percent) patients achieved union. CONCLUSION Our results are comparable to those reported by other studies and indicate that avascular necrosis was associated with failure to achieve union.
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Tan WK, Tan G. Enhanced nursing aides for enhanced care in nursing homes. BMJ Support Palliat Care 2011. [DOI: 10.1136/bmjspcare-2011-000053.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Srivastava A, Tan G, Grover S, Tewari AK. Nerve-sparing radical prostatectomy: current concepts in a robotic era. Panminerva Med 2010; 52:223-230. [PMID: 21045779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Recovery of potency sufficient for penetrative intercourse at a year after surgery varies widely. Much of the progress achieved in the past two decades in improving potency outcomes after radical prostatectomy has resulted from an improved appreciation of the anatomic basis of the nerves responsible for erection. Recent studies suggest alternative and more complex course of nerves than previously described. Better appreciation of the variable and often invisible anatomical course of the cavernosal nerves continues to engender innovations in surgical technique to optimize their preservation. Exciting frontiers of research that include efforts in stem cell neural regeneration, development of specific fluorophores and biomarkers, and performing radical prostatectomy under hypothermic conditions may provide much-needed breakthroughs to improving potency outcomes following radical prostatectomy in this current age of improved life expectancy and heightened patient expectations.
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White DL, Savas LS, Daci K, Elserag R, Graham DP, Fitzgerald SJ, Smith SL, Tan G, El-Serag HB. Trauma history and risk of the irritable bowel syndrome in women veterans. Aliment Pharmacol Ther 2010; 32:551-61. [PMID: 20528828 PMCID: PMC2906642 DOI: 10.1111/j.1365-2036.2010.04387.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Over 1.8 million women in the U.S. are veterans of the armed services. They are at increased risk of occupational traumas, including military sexual trauma. AIM To evaluate the association between major traumas and irritable bowel syndrome among women veterans accessing Veteran Affairs (VA) healthcare. METHODS We administered questionnaires to assess trauma history as well as IBS, post-traumatic stress disorder (PTSD) and depression symptoms to 337 women veterans seen for primary care at VA Women's Clinic between 2006 and 2007. Logistic regression was used to evaluate the association between individual traumas and IBS risk after adjustment for age, ethnicity, PTSD and depression. RESULTS Irritable bowel syndrome prevalence was 33.5%. The most frequently reported trauma was sexual assault (38.9%). Seventeen of eighteen traumas were associated with increased IBS risk after adjusting for age, ethnicity, PTSD and depression, with six statistically significant [range of adjusted odds ratios (OR) between 1.85 (95% CI, 1.08-3.16) and 2.6 (95% CI, 1.28-3.67)]. Depression and PTSD were significantly more common in IBS cases than controls, but neither substantially explained the association between trauma and increased IBS risk. CONCLUSIONS Women veterans report high frequency of physical and sexual traumas. A lifetime history of a broad range of traumas is independently associated with an elevated risk of the irritable bowel syndrome.
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Graham DP, Savas L, White D, El-Serag R, Laday-Smith S, Tan G, El-Serag HB. Irritable bowel syndrome symptoms and health related quality of life in female veterans. Aliment Pharmacol Ther 2010; 31:261-73. [PMID: 19814746 PMCID: PMC2887289 DOI: 10.1111/j.1365-2036.2009.04159.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The status and determinants of health-related quality of life (HRQOL) in female veterans with and without irritable bowel syndrome (IBS) are unknown. AIM To compare HRQOL in female veterans with and without IBS symptoms and examine the contribution of post-traumatic stress disorder, depression and anxiety to HRQOL. METHODS A cross-sectional study of 339 female veterans. Self-report questionnaires were used to evaluate IBS symptoms, post-traumatic stress disorder, depression, anxiety and HRQOL. RESULTS Symptoms consistent with IBS were present in 33.5% of participants. Female veterans with IBS symptoms had significant reductions in physical component score and 5 of 8 Health Related Quality of Life subscales and on 7 of 8 Irritable Bowel Syndrome Quality Of Life subscales than female veterans without IBS symptoms. Compared with the US general female population, female veterans had significantly lower Health Related Quality of Life physical component score and mental component scores (MCS) irrespective of IBS symptom status. Differences in the MCS score were most explained by depression, while those in the physical component score were most explained by anxiety. CONCLUSIONS Irritable bowel syndrome symptoms in female veterans are associated with considerable reduction in HRQOL. However, female veterans, regardless of IBS symptom status, have lower HRQOL compared with the general US female population.
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Tan R, Osman V, Tan G. Ear size as a predictor of chronological age. Arch Gerontol Geriatr 2009; 25:187-91. [PMID: 18653105 DOI: 10.1016/s0167-4943(97)00010-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/1996] [Revised: 01/14/1997] [Accepted: 04/04/1997] [Indexed: 11/20/2022]
Abstract
It is generally observed that older people have bigger ears and noses. Cartilage is known to alter in structure with age. We conducted a cross sectional study to verify the trend between age and the size of two cartilaginous structures, ear and nose. A total of 100 young individuals were compared to older individuals with respect to their ear and nose sizes. We found that the greatest correlation coefficient of age was with ear circumference, and the linear regression equation being: Ear circumference = 88.1 + (0.51 x subject's age). Except for the ear tragus, which correlated insignificantly with age, anatomical variables of the ear had higher correlation with age than anatomical variables of the nose. This study supports the view that as people age, their ears get larger, particularly the ear circumference, which increases on average 0.51 mm per year. This enlargement is likely associated with aging changes of collagen. The knowledge from this study allows us to calculate the age of an individual based on ear size: Subject's age = 1.96 x (Ear circumference in millimeters - 88.1).
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Chai Y, Shao Y, Lin S, Xiong KY, Chen WS, Li YY, Yi JL, Zhang L, Tan G, Tang J. Vision-Related Quality of Life and Emotional Impact in Children with Strabismus: A Prospective Study. J Int Med Res 2009; 37:1108-14. [PMID: 19761693 DOI: 10.1177/147323000903700415] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The potential impact of the surgical correction of strabismus on vision-related quality of life (VRQOL) and the symptoms of anxiety and depression in children with strabismus remain unclear. The present study included 60 children with strabismus: 30 with heterophoria and 30 with heterotropia. A healthy age-and gender-matched control group ( n = 60) was also recruited. The psychological instruments that were used were the short-form 25-item National Eye Institute Visual Functioning Questionnaire (NEI-VFQ-25) and the Hospital Anxiety and Depression Scale (HADS). The results demonstrated that eight of the 12 NEI-VFQ-25 subscales were significantly impaired in children with strabismus compared with matched controls. Compared with pre-operative values, significant improvements were noted after surgery in the NEI-VFQ-25 summary score, and the anxiety and depression scores. This study demonstrated that the NEI-VFQ-25 instrument can be used in strabismus children and that surgical interventions can improve VRQOL, anxiety and depression in strabismus patients.
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Lutti A, Tan G, Hutton C, Draganski B, Frackowiak R, Ashburner J, Helms G, Weiskopf N. Fast Whole-Brain T1 Mapping at 1 mm Resolution with RF Bias Correction. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70120-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Li J, Sun B, Huang Y, Lin X, Zhao D, Tan G, Wu J, Zhao H, Cao L, Zhong N. A multicentre study assessing the prevalence of sensitizations in patients with asthma and/or rhinitis in China. Allergy 2009; 64:1083-92. [PMID: 19210346 DOI: 10.1111/j.1398-9995.2009.01967.x] [Citation(s) in RCA: 181] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND The prevalence of sensitization in patients with asthma and rhinitis in mainland China remains unclear. OBJECTIVE Our aim was to estimate the prevalence of allergy in patients with respiratory allergic diseases such as asthma and/or rhinitis attending respiratory clinics within mainland China. The study also investigated regional and annual differences in the prevalence and pattern of sensitization among the patients in China. METHOD A cross-sectional survey was performed in 6304 patients suffering from asthma and/or rhinitis in 17 cities from 4 regions of China. Patients completed a standardized questionnaire asking for the presence of respiratory and allergic symptoms. They also underwent skin prick tests with 13 common aeroallergens. RESULTS Among the 6304 patients, 4545 (72.1%) had at least one positive skin prick reaction. The overall prevalence of positive skin prick responses was 59.0% for Dermatophagoides farinae, 57.6% for Dermatophagoides pteronyssinus, 40.7% for Blomia tropicalis, 16.1% for American cockroach, 14.0% for dog, 11.5% for Blatella germanica, 11.3% for Artemisia vulgaris, 10.3% for cat, 6.5% for Ambrosia artemisifolia, 6.3% for mixed mould I, 4.4% for mixed mould IV, 3.5% for mixed grass pollen and 2.2% for mixed tree pollen. Sensitizations to common allergens varied widely between geographical areas and demonstrated unique pattern in patients by stratification with age groups, with asthma and/or rhinitis. Severity of rhinitis and asthma was significantly correlated with skin index of reactivity to Artemisia vulgaris, Ambrosia artemisifolia and to D. pteronyssinus, D. farinae and Blomia tropicalis respectively (P < 0.001). Positive reactivity to the tested allergens and concomitant reactivity to multiple allergens including to house dust mites and Blomia tropicalis was markedly increased in patients with both asthma and rhinitis. CONCLUSION House dust mites were the most prevalent allergens in patients with asthma and/or rhinitis in China. There were significant differences in patterns of sensitizations in patients from different geographical areas, age groups as well as asthma and/or rhinitis.
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Lambert CP, Tan G, Ashburner J, Frackowiak R. Sex matters: A genetic basis for gender asymmetries in amygdala emotive networks. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71392-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Wong DM, Prabhu A, Chakraborty S, Tan G, Massicotte EM, Cooper R. Cervical spine motion during flexible bronchoscopy compared with the Lo-Pro GlideScope. Br J Anaesth 2009; 102:424-30. [PMID: 19193652 DOI: 10.1093/bja/aep002] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The most appropriate device for tracheal intubation in patients with potential cervical spine injury remains controversial. We hypothesized that the Lo-Pro GlideScope (LP-G) videolaryngoscope would not cause significantly greater cervical spine movement than fibreoptic bronchoscopy even in the non-immobilized spine. METHODS Twenty-eight healthy adults requiring intubation for radiographic procedures were randomized to either the LP-G or the flexible bronchoscope (FB) devices. Continuous fluoroscopy was used to assess cervical spine movement during tracheal intubation. The point of maximum movement was compared with baseline for change in angulation between Occiput (Occ)-C1, Occ-C2, Occ-C4, Occ-C5, C1-2, C2-4, and C4-5. Measurements were made by two independent observers. The change in angulation was also measured for tongue pull and jaw thrust, manoeuvres for enlarging the pharyngeal space, before FB intubation. RESULTS LP-G resulted in greater cervical extension compared with FB for every angle calculated, statistically significant between Occ-C1 (P<0.05), Occ-C2 (P<0.05), and Occ-C4 (P<0.01). Tongue pull resulted in significantly less cervical spine motion than FB intubation at Occ-C1, Occ-C2, Occ-C4, and Occ-C5 (P<0.05). When jaw thrust was added to tongue pull, there was a tendency for greater movement than FB intubation at Occ-C1, Occ-C2, and Occ-C3. This was statistically significant at Occ-C1 and Occ-C3 (P<0.05) for one of the two observers. CONCLUSIONS During intubation under general anaesthesia, LP-G resulted in greater cervical movement than FB when no cervical immobilization was used in adults without cervical disease. Airway manoeuvres performed before FB, especially jaw thrust, also resulted in cervical spine movement.
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Savas LS, White DL, Wieman M, Daci K, Fitzgerald S, Laday Smith S, Tan G, Graham DP, Cully JA, El-Serag HB. Irritable bowel syndrome and dyspepsia among women veterans: prevalence and association with psychological distress. Aliment Pharmacol Ther 2009; 29:115-25. [PMID: 18785989 PMCID: PMC2939246 DOI: 10.1111/j.1365-2036.2008.03847.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The burden of functional GI disorders and their associations with psychological distress in women veterans is unclear. AIM To examine 1-year prevalence of irritable bowel syndrome (IBS) and dyspepsia symptoms and their associations with anxiety, depression and post-traumatic stress disorder (PTSD) among women veterans receiving primary care at a Veteran Affairs Medical Center Women's Clinic. METHODS Irritable bowel syndrome, dyspepsia and psychological distress were assessed using the validated self-administered Bowel Disorder Questionnaire, the Beck Depression and Anxiety Inventories, as well as the Mississippi Scale for Combat-Related Post-Traumatic Stress Disorder Questionnaire. RESULTS We enrolled 248 women (84% participation rate). Ninety-three (38%) reported IBS and 51 (21%) dyspepsia symptoms. Women with IBS and dyspepsia reported higher mean scores of anxiety (IBS: 24 vs. 12, P < 0.0005 and dyspepsia: 26 vs. 12, P < 0.0005), depression (IBS: 22 vs. 11, P = 0.0005 and dyspepsia: 23 vs. 11, P < 0.0005) and PTSD (IBS: 87 vs. 69, P < 0.001 and dyspepsia: 86 vs. 69, P < 0.0005). Age- and ethnicity-adjusted logistic regression analyses showed a 3- to 46-fold increase in odds of IBS and dyspepsia among women with anxiety, depression or PTSD. CONCLUSION Women veterans have high prevalence of IBS and dyspepsia symptoms, both of which are highly associated with presence of depression, anxiety and PTSD.
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Qi Q, Guo Q, Tan G, Mao Y, Tang H, Zhou C, Zeng F. Predictors of the scleroderma phenotype in fibroblasts from systemic sclerosis patients. J Eur Acad Dermatol Venereol 2008; 23:160-8. [PMID: 19054252 DOI: 10.1111/j.1468-3083.2008.03016.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Fibroblasts from skin lesions generally exhibit the scleroderma phenotype in the early stage of in vitro culture, and act as one of the most important samples to investigate systemic sclerosis. However, not all cell lines from patients show the scleroderma phenotype, and little prospective evidence can be relied on to predict the phenotype of fibroblasts from systemic sclerosis patients. OBJECTIVE This study aims to find the predictive factors related to fibroblast phenotypes. METHODS Fibroblast lines from 15 patients with systemic sclerosis were established through explant culture, with their scleroderma phenotypes being determined by real-time reverse transcription-polymerase chain reaction (RT-PCR) of procollagen transcription. Logistic regression analysis was used to analyse the clinical data of these patients. Haematoxylin-eosin staining was performed to observe histopathological differences. Expression of methylation-related factors was detected by real-time reverse transcription-polymerase chain reaction. RESULTS Eight of the 15 fibroblast cell lines from patients with systemic sclerosis exhibited the scleroderma phenotype. Logistic regression analysis yielded an equation (Y = -9.718 + 2.525X1) in which X1 significantly represents the Valentini Disease Activity Index. Histopathology results demonstrated that the scleroderma phenotype was positively correlated with leucocyte infiltration. Further laboratory observations showed increased expression of Dnmt1 in the positive phenotype fibroblasts and a positive correlation between elevations of Dnmt1 and the maintenance period of the scleroderma phenotype. CONCLUSIONS The results of this study suggest that the Valentini Disease Activity Index and expression of Dnmt1 may act as indicators of the scleroderma phenotype in fibroblasts. Additionally, these data also imply that epigenetic factors, such as Dnmt1, may be involved in the maintenance of the scleroderma phenotype. Our analyses may be beneficial to the research in systemic sclerosis.
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Jhaveri J, Tan G, Scherr D, Vaughan E, Tewari A. UP.31: Robotic Assisted Radical Prostatectomy in the Renal Allograft Recipient. Urology 2008. [DOI: 10.1016/j.urology.2008.08.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Tan G, Jhaveri J, Rao S, Yadav R, Leung R, Vaughan E, Tewari A, Bartsch G. POD-4.09: Accelerated Continence Recovery After Robotic Prostatectomy Using Cornell Anatomic Reconstruction Technique: Experience of 1018 Patients. Urology 2008. [DOI: 10.1016/j.urology.2008.08.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Jhaveri J, Tan G, Rao S, Yadav R, Leung R, Te A, Vaughan E, Tewari A. UP.76: Impact of Total Anatomic Reconstruction of the Bladder Neck in Obese Men: Continence Outcomes Following Robotic Prostatectomy. Urology 2008. [DOI: 10.1016/j.urology.2008.08.403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rao S, Ballon D, Yadav R, Leung R, Jhaveri J, Tan G, Tewari A. MP-4.18: Novel Use of 3-Tesla Magnetic Resonance Microscopy in Staging Early Prostate Cancer: Congruency Between Radiologic Anatomy and Final Histopathology. Urology 2008. [DOI: 10.1016/j.urology.2008.08.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rao S, Mandhani A, Tan G, Yadav R, Jhaveri J, Leung R, Te A, Bartsch G, Vaughan D, Tewari A. UP.32: Robotic Radical Prostatectomy Utilizing a Custom-Made Synchronous Suprapubic Vesical Urinary Diversion Device and Anastomotic Splint: Report of Initial Series and Peri-Operative Outcomes. Urology 2008. [DOI: 10.1016/j.urology.2008.08.355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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