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Liu Z, Gao L, Kan C, Chen X, Shi K, Wang W. DNMT1 methylation of LncRNA-ANRIL causes myocardial fibrosis pyroptosis by interfering with the NLRP3/Caspase-1 pathway. Cell Mol Biol (Noisy-le-grand) 2024; 70:197-203. [PMID: 38650132 DOI: 10.14715/cmb/2024.70.3.30] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Indexed: 04/25/2024]
Abstract
Myocardial fibrosis is a common pathological manifestation that occurs in various cardiac diseases. The present investigation aims to reveal how DNMT1/lncRNA-ANRIL/NLRP3 influences fibrosis and cardiac fibroblast pyroptosis. Here, we used ISO to induce myocardial fibrosis in mice, and LPS and ATP to induce myocardial fibroblast pyroptosis. The results showed that DNMT1, Caspase-1, and NLRP3 expression were significantly increased in fibrotic murine myocardium and pyroptotic cardiac fibroblasts, whereas LncRNA-ANRIL expression was decreased. DNMT1 overexpression decreased the level of LncRNA-ANRIL while increasing the levels of NLRP3 and Caspase-1. Contrarily, silencing DNMT1 increased the LncRNA-ANRIL and decreased the levels of NLRP3 and Caspase-1. Silencing LncRNA-ANRIL increased the levels of NLRP3 and Caspase-1. The present findings suggest that DNMT1 can methylate LncRNA-ANRIL during the development of myocardial fibrosis and CFs cell scorching, resulting in low LncRNA-ANRIL expression, thereby influencing myocardial fibrosis and cardiac fibroblast pyroptosis.
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Affiliation(s)
- Zuntao Liu
- Department of Cardiothoracic Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, China.
| | - Lei Gao
- Department of Integrated Chinese and Western Medicine, School of Chinese Medicine & School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China.
| | - Chenjing Kan
- Wang Jing Hospital of CACMS, Beijing 100102, China.
| | - Xin Chen
- Department of Interventional Radiology, Liyang Hospital of Traditional Chinese Medicine, Liyang, Jiangsu 213399, China.
| | - Kaihu Shi
- Department of Cardiothoracic Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, China.
| | - Wei Wang
- Department of Cardiothoracic Surgery, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, China.
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Singh V, Doshi P, Kingsford P, Miklin D, Nadeswaran P, Kan C, Lee R, Wolfson A, Vaidya A, Depasquale E. Rethinking the Impact of Donor eGFR on Heart Transplant Outcomes. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1133] [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: 11/27/2022] Open
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3
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Cross R, Murphy C, Kan C. P.26 Routine use of tranexamic acid during elective caesarean section: A district general’s experience. Int J Obstet Anesth 2021. [DOI: 10.1016/j.ijoa.2021.103024] [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: 10/21/2022]
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4
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Zhao HD, Ma Y, Wu XS, Cheng JJ, Xia ZG, Kan C, Ding XJ, Chen WD, Zhang LZ, Wang XY, Cai Y, Wang SY. Circ_001680 aggravates the malignant process of gastric carcinoma by targeting MAP2. Eur Rev Med Pharmacol Sci 2021; 24:6072-6079. [PMID: 32572922 DOI: 10.26355/eurrev_202006_21502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to explore the expression pattern and clinical significance of circ_001680 in gastric carcinoma (GC) process. PATIENTS AND METHODS Circ_001680 levels in 40 pairs of GC and paracancerous ones were detected by quantitative real-time polymerase chain reaction (qRT-PCR). The relationship between circ_001680 and GC clinicopathological parameters was analyzed. AGS and SGC-7901 cells were used for constructing circ_001680 knockdown models by shRNA transfection. Proliferative and metastatic abilities in GC cells with circ_001680 knockdown were examined by cell counting kit-8 (CCK-8) and transwell assay, respectively. Dual-Luciferase reporter assay was conducted to clarify the interaction between circ_001680 and MAP2. Their co-regulation on GC process was detected through rescue experiments. RESULTS Circ_001680 was highly expressed in GC tissues and cell lines. High level of circ_001680 predicted high incidences of lymphatic and distant metastasis, and poor prognosis in GC patients. Knockdown of circ_001680 suppressed proliferative and metastatic abilities in AGS and SGC-7901 cells. MAP2 was the target gene binding circ_001680, which was lowly expressed in GC. In addition, MAP2 was negatively correlated to circ_001680. Knockdown of MAP2 could abolish the suppressed proliferative and metastatic abilities in GC cells with circ_001680 knockdown. CONCLUSIONS Circ_001680 is highly expressed in GC tissues and closely related to metastasis and prognosis in GC patients, which promotes the proliferative and metastatic abilities in GC cells by negatively interacting with MAP2.
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Affiliation(s)
- H-D Zhao
- Department of Emergency Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
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Zaremba N, Watson A, Kan C, Broadley M, Partridge H, Figuereido C, Hopkins D, Treasure J, Ismail K, Harrison A, Stadler M. Multidisciplinary healthcare teams' challenges and strategies in supporting people with type 1 diabetes to recover from disordered eating. Diabet Med 2020; 37:1992-2000. [PMID: 31833586 DOI: 10.1111/dme.14207] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/10/2019] [Indexed: 11/30/2022]
Abstract
AIM To examine the challenges healthcare teams face when treating people with type 1 diabetes and disordered eating and the strategies these teams have developed to facilitate effective treatment. METHODS Four semi-structured focus groups were conducted including two tertiary diabetes specialist teams and three tertiary eating disorders specialist teams between July and December 2018. Thematic analysis of the transcripts followed a six-phase process. RESULTS Twenty-nine experienced healthcare professionals (16 diabetes and 13 eating disorder specialists, 16±12 years' professional experience) were interviewed. The challenges identified in treating people with type 1 diabetes and disordered eating included subthemes the 'challenges specific to the healthcare professional' (feeling not competent enough and perceived emotional burden), 'challenges pertaining to patient factors' (e.g. difficulties with engaging in therapy) and 'challenges created by the healthcare system' (time pressure and staff shortage). Healthcare professionals expressed the need for a consensus on diagnosis and the definition of disordered eating in type 1 diabetes, as well as the need for training and educational resources specific to type 1 diabetes and disordered eating. Healthcare professionals gave practical examples of strategies of communication for better patient engagement and felt that multidisciplinary working in joint clinics with the other specialty were facilitators for recovery from disordered eating. CONCLUSIONS Healthcare professionals require multidisciplinary team support when treating people with type 1 diabetes and to improve their own competencies. The development of effective screening and assessment tools, educational resources and training for healthcare professionals, and developing multidisciplinary treatment pathways will be key to improving outcomes for their service users with type 1 diabetes and disordered eating.
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Affiliation(s)
- N Zaremba
- Diabetes Research Group, Weston Education Centre, King's College London, London, UK
| | - A Watson
- Division of Medicine, University College London, London, UK
| | - C Kan
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - M Broadley
- Department of Psychology, University of Southern Denmark, Odense, Denmark
| | - H Partridge
- Diabetes Centre, Royal Bournemouth and Christchurch Hospital, Bournemouth, UK
| | - C Figuereido
- Dorset Eating Disorders Service, Royal Bournemouth and Christchurch Hospital, Bournemouth, UK
| | - D Hopkins
- Institute of Diabetes Endocrinology and Obesity, King's Health Partners, London, UK
| | - J Treasure
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - K Ismail
- Institute of Diabetes Endocrinology and Obesity, King's Health Partners, London, UK
- Department of Psychological Medicine, Diabetes Psychology and Psychiatry Research Group, Weston Education Centre, King's College London, London, UK
| | - A Harrison
- Diabetes Research Group, Weston Education Centre, King's College London, London, UK
- University College London, Institute of Education, London, UK
| | - M Stadler
- Diabetes Research Group, Weston Education Centre, King's College London, London, UK
- Department of Psychological Medicine, Diabetes Psychology and Psychiatry Research Group, Weston Education Centre, King's College London, London, UK
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Vargas G, Bouchet M, Bouazza L, Reboul P, Boyault C, Gervais M, Kan C, Benetollo C, Brevet M, Croset M, Mazel M, Cayrefourcq L, Geraci S, Vacher S, Pantano F, Filipits M, Driouch K, Bieche I, Gnant M, Jacot W, Aubin JE, Duterque-Coquillaud M, Alix-Panabières C, Clézardin P, Bonnelye E. ERRα promotes breast cancer cell dissemination to bone by increasing RANK expression in primary breast tumors. Oncogene 2019; 38:950-964. [PMID: 30478447 DOI: 10.1038/s41388-018-0579-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 10/20/2018] [Indexed: 02/07/2023]
Abstract
Bone is the most common metastatic site for breast cancer. Estrogen-related-receptor alpha (ERRα) has been implicated in cancer cell invasiveness. Here, we established that ERRα promotes spontaneous metastatic dissemination of breast cancer cells from primary mammary tumors to the skeleton. We carried out cohort studies, pharmacological inhibition, gain-of-function analyses in vivo and cellular and molecular studies in vitro to identify new biomarkers in breast cancer metastases. Meta-analysis of human primary breast tumors revealed that high ERRα expression levels were associated with bone but not lung metastases. ERRα expression was also detected in circulating tumor cells from metastatic breast cancer patients. ERRα overexpression in murine 4T1 breast cancer cells promoted spontaneous bone micro-metastases formation when tumor cells were inoculated orthotopically, whereas lung metastases occurred irrespective of ERRα expression level. In vivo, Rank was identified as a target for ERRα. That was confirmed in vitro in Rankl stimulated tumor cell invasion, in mTOR/pS6K phosphorylation, by transactivation assay, ChIP and bioinformatics analyses. Moreover, pharmacological inhibition of ERRα reduced primary tumor growth, bone micro-metastases formation and Rank expression in vitro and in vivo. Transcriptomic studies and meta-analysis confirmed a positive association between metastases and ERRα/RANK in breast cancer patients and also revealed a positive correlation between ERRα and BRCA1mut carriers. Taken together, our results reveal a novel ERRα/RANK axis by which ERRα in primary breast cancer promotes early dissemination of cancer cells to bone. These findings suggest that ERRα may be a useful therapeutic target to prevent bone metastases.
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Affiliation(s)
- G Vargas
- INSERM-UMR1033, Lyon, France
- University of Lyon1, Lyon, France
| | - M Bouchet
- INSERM-UMR1033, Lyon, France
- University of Lyon1, Lyon, France
- IGFL, Lyon, France
| | - L Bouazza
- INSERM-UMR1033, Lyon, France
- University of Lyon1, Lyon, France
| | - P Reboul
- UMR7365-CNRS-Université de Lorraine, Nancy, France
| | - C Boyault
- Institute for Advanced Biosciences, Grenoble, France
| | - M Gervais
- INSERM-UMR1033, Lyon, France
- University of Lyon1, Lyon, France
| | - C Kan
- INSERM-UMR1033, Lyon, France
- University of Lyon1, Lyon, France
- Center for Cancer Research, University of Sydney, Sydney, Australia
| | - C Benetollo
- University of Lyon1, Lyon, France
- INSERM-U1028-CNRS-UMR5292, Lyon, France
| | - M Brevet
- INSERM-UMR1033, Lyon, France
- Centre de Biologie et de Pathologie Est, Bron, France
| | - M Croset
- INSERM-UMR1033, Lyon, France
- University of Lyon1, Lyon, France
| | - M Mazel
- EA2415-Institut Universitaire de Recherche Clinique, Montpellier, France
| | - L Cayrefourcq
- EA2415-Institut Universitaire de Recherche Clinique, Montpellier, France
| | - S Geraci
- INSERM-UMR1033, Lyon, France
- University of Lyon1, Lyon, France
| | - S Vacher
- Department of Genetics, Institut-Curie, Paris, France
| | - F Pantano
- University-Campus-Bio-Medico, Rome, 00128, Italy
| | - M Filipits
- Department of Surgery and Comprehensive Cancer Center, Medical-University of Vienna, Vienna, Austria
| | - K Driouch
- Department of Genetics, Institut-Curie, Paris, France
| | - I Bieche
- Department of Genetics, Institut-Curie, Paris, France
| | - M Gnant
- Department of Surgery and Comprehensive Cancer Center, Medical-University of Vienna, Vienna, Austria
| | - W Jacot
- Montpellier Cancer Institute, Montpellier, France
| | - J E Aubin
- University of Toronto, Toronto, Canada
| | | | - C Alix-Panabières
- EA2415-Institut Universitaire de Recherche Clinique, Montpellier, France
| | - P Clézardin
- INSERM-UMR1033, Lyon, France
- University of Lyon1, Lyon, France
| | - E Bonnelye
- INSERM-UMR1033, Lyon, France.
- University of Lyon1, Lyon, France.
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Macdonald P, Kan C, Stadler M, De Bernier GL, Hadjimichalis A, Le Coguic AS, Allan J, Ismail K, Treasure J. Eating disorders in people with Type 1 diabetes: experiential perspectives of both clients and healthcare professionals. Diabet Med 2018; 35:223-231. [PMID: 29178332 DOI: 10.1111/dme.13555] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/20/2017] [Indexed: 01/27/2023]
Abstract
AIMS To explore the experiential perspective of people with Type 1 diabetes mellitus and eating disorders and that of the healthcare professionals treating them, and to understand the experience of both sides to inform future development of healthcare services. METHODS Participants were recruited from Diabetics with Eating Disorders (a national UK charity), and through professional networks. Nine partially/fully recovered individuals with Type 1 diabetes and eating disorders and eight healthcare professionals participated in semi-structured interviews carried out by medically trained researchers. Data were transcribed and coded using a six-stage framework of thematic analysis. RESULTS Four superordinate themes and several subordinate themes emerged from the Type 1 diabetes and eating disorders dataset: (1) perceptions surrounding service provision; (2) reflections on the recovery process; (3) the experiential perspective of living with Type 1 diabetes and an eating disorder; and (4) support mechanisms. Healthcare professional data elicited three superordinate themes and several subordinate themes: (1) service provision; (2) personal insight and reflection of professional role; and (3) challenges of working with dual diagnoses. CONCLUSION People with Type 1 diabetes and eating disorders and their healthcare professionals provided insight into healthcare services from the patient and care delivery perspectives. There was general agreement from both groups that a multidisciplinary, collaborative (family inclusive), clinical approach to treatment is important, as well as adequate training opportunities for service providers. These findings may help to inform development strategies for multidisciplinary care approaches to Type 1 diabetes complicated by eating disorders.
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Affiliation(s)
- P Macdonald
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - C Kan
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - M Stadler
- King's College London, Diabetes Research Group, London, UK
| | - G L De Bernier
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - A Hadjimichalis
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - A-S Le Coguic
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - J Allan
- Birkbeck, University of London, London, UK
| | - K Ismail
- Diabetes Department, King's College Hospital, London, UK
| | - J Treasure
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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Clery P, Stahl D, Ismail K, Treasure J, Kan C. Systematic review and meta-analysis of the efficacy of interventions for people with Type 1 diabetes mellitus and disordered eating. Diabet Med 2017; 34:1667-1675. [PMID: 28887815 DOI: 10.1111/dme.13509] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/01/2017] [Indexed: 01/07/2023]
Abstract
AIM To examine the types of interventions currently available for people with Type 1 diabetes mellitus and their effectiveness. BACKGROUND The prevalence of disordered eating in people with Type 1 diabetes mellitus is twice that in their counterparts without diabetes, and is associated with worse biomedical outcomes and greater mortality. METHODS Medline, Embase, PsycINFO, the Cochrane Library, PubMed and OpenGrey databases were searched up to August 2016 to identify studies on interventions in people with Type 1 diabetes-associated disordered eating. For the systematic review, intervention components were identified and their effectiveness was examined. For the meta-analysis, the pooled effect sizes of glycaemic control (HbA1c ) between pre- and post-treatment in treatment and comparison groups were calculated using a random effects model. RESULTS Of 91 abstracts reviewed, six studies met the inclusion criteria, of which three had appropriate data for the meta-analysis (n = 118). The pooled effect size was -0.21 95% CI (-0.58 to 0.16; where negative values represent an improvement in HbA1c levels), indicating no statistically significant improvement in the treatment group compared with comparison group. Inpatient therapy appeared to be the most effective treatment, and this had multiple components including cognitive behavioural therapy, psychoeducation and family therapy. CONCLUSION Limited or no improvement in glycaemic control and disordered eating symptoms was observed in people with Type 1 diabetes-associated disordered eating who were receiving currently available interventions. The present review suggests that developing an intensive intervention with a joint focus on both disordered eating and diabetes management is needed for this complex patient group.
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Affiliation(s)
- P Clery
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - D Stahl
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - K Ismail
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - J Treasure
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - C Kan
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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Ter Huurne N, Lozano-Soldevilla D, Onnink M, Kan C, Buitelaar J, Jensen O. Diminished modulation of preparatory sensorimotor mu rhythm predicts attention-deficit/hyperactivity disorder severity. Psychol Med 2017; 47:1947-1956. [PMID: 28290271 DOI: 10.1017/s0033291717000332] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Attention-deficit/hyperactivity disorder (ADHD) is characterized by problems in regulating attention and in suppressing disruptive motor activity, i.e. hyperactivity and impulsivity. We recently found evidence that aberrant distribution of posterior α band oscillations (8-12 Hz) is associated with attentional problems in ADHD. The sensorimotor cortex also produces strong 8-12 Hz band oscillations, namely the μ rhythm, and is thought to have a similar inhibitory function. Here, we now investigate whether problems in distributing α band oscillations in ADHD generalize to the μ rhythm in the sensorimotor domain. METHOD In a group of adult ADHD (n = 17) and healthy control subjects (n = 18; aged 21-40 years) oscillatory brain activity was recorded using magnetoencephalography during a visuo-spatial attention task. Subjects had to anticipate a target with unpredictable timing and respond by pressing a button. RESULTS Preparing a motor response, the ADHD group failed to increase hemispheric μ lateralization with relatively higher μ power in sensorimotor regions not engaged in the task, as the controls did (F 1,33 = 8.70, p = 0.006). Moreover, the ADHD group pre-response μ lateralization not only correlated positively with accuracy (r s = 0.64, p = 0.0052) and negatively with intra-individual reaction time variability (r s = -0.52, p = 0.033), but it also correlated negatively with the score on an ADHD rating scale (r s = -0.53, p = 0.028). CONCLUSIONS We suggest that ADHD is associated with an inability to sufficiently inhibit task-irrelevant sensorimotor areas by means of modulating μ oscillatory activity. This could explain disruptive motor activity in ADHD. These results provide further evidence that impaired modulation of α band oscillations is involved in the pathogenesis of ADHD.
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Affiliation(s)
- N Ter Huurne
- Karakter Child and Adolescent Psychiatry University Centre,Nijmegen,The Netherlands
| | - D Lozano-Soldevilla
- Donders Institute for Brain,Cognition and Behaviour,Radboud University,Nijmegen,The Netherlands
| | - M Onnink
- Department of Human Genetics,Radboudumc,Nijmegen,The Netherlands
| | - C Kan
- Department of Psychiatry,Radboudumc,Nijmegen,The Netherlands
| | - J Buitelaar
- Karakter Child and Adolescent Psychiatry University Centre,Nijmegen,The Netherlands
| | - O Jensen
- Centre for Human Brain Health,School of Psychology,University of Birmingham,Birmingham,UK
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Affiliation(s)
- C Kan
- Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience
| | - S J Kaar
- General Adult Psychiatry, South London and Maudsley NHS Foundation Trust
| | - M Eisa
- General Adult Psychiatry, Barnet, Enfield and Haringey NHS Trust
| | - L Jones
- General Adult Psychiatry, South London and Maudsley NHS Foundation Trust
| | - J Beckett
- General Adult Psychiatry, South London and Maudsley NHS Foundation Trust
| | - O Mustafa
- Department of Diabetes, King's College Hospital, King's Health Partners, London, UK
| | - K Ismail
- Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience
- Department of Diabetes, King's College Hospital, King's Health Partners, London, UK
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Treasure J, Kan C, Stephenson L, Warren E, Smith E, Heller S, Ismail K. Developing a theoretical maintenance model for disordered eating in Type 1 diabetes. Diabet Med 2015; 32:1541-5. [PMID: 26104138 DOI: 10.1111/dme.12839] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/19/2015] [Indexed: 01/06/2023]
Abstract
BACKGROUND According to the literature, eating disorders are an increasing problem for more than a quarter of people with Type 1 diabetes and they are associated with accentuated diabetic complications. The clinical outcomes in this group when given standard eating disorder treatments are disappointing. The Medical Research Council guidelines for developing complex interventions suggest that the first step is to develop a theoretical model. AIM To review existing literature to build a theoretical maintenance model for disordered eating in people with Type 1 diabetes. METHOD The literature in diabetes relating to models of eating disorder (Fairburn's transdiagnostic model and the dual pathway model) and food addiction was examined and assimilated. RESULTS The elements common to all eating disorder models include weight/shape concern and problems with mood regulation. The predisposing traits of perfectionism, low self-esteem and low body esteem and the interpersonal difficulties from the transdiagnostic model are also relevant to diabetes. The differences include the use of insulin mismanagement to compensate for breaking eating rules and the consequential wide variations in plasma glucose that may predispose to 'food addiction'. Eating disorder symptoms elicit emotionally driven reactions and behaviours from others close to the individual affected and these are accentuated in the context of diabetes. CONCLUSION The next stage is to test the assumptions within the maintenance model with experimental medicine studies to facilitate the development of new technologies aimed at increasing inhibitory processes and moderating environmental triggers.
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Affiliation(s)
- J Treasure
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London
- Psychiatry Department, South London and Maudsley NHS Foundation Trust, London
| | - C Kan
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London
- Psychiatry Department, South London and Maudsley NHS Foundation Trust, London
| | - L Stephenson
- Psychiatry Department, South London and Maudsley NHS Foundation Trust, London
| | - E Warren
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London
| | - E Smith
- Diabetes Department, King's College Hospital, London
| | - S Heller
- Diabetes Department, University of Sheffield, Sheffield, UK
| | - K Ismail
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London
- Psychiatry Department, South London and Maudsley NHS Foundation Trust, London
- Diabetes Department, King's College Hospital, London
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Kan C, Patel R, Biswas T. Distribution of Newly Diagnosed Breast Cancers by Subtype and Race Using the SEER Database. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kan C, Silverman P, Patel R, Lyons J. Risk of Radiation Pneumonitis in Node Positive Breast Cancer Patients Treated With Concurrent Paclitaxel. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.604] [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: 10/22/2022]
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Kan C, Pedersen N, MacCabe J, Ismail K, Rijsdijk F. The Genetic Overlap of Type 2 Diabetes and Depression – Finding From the Swedish Twin Registry. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)30235-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Vilela D, Orozco J, Cheng G, Sattayasamitsathit S, Galarnyk M, Kan C, Wang J, Escarpa A. Multiplexed immunoassay based on micromotors and microscale tags. Lab Chip 2014; 14:3505-3509. [PMID: 25017813 DOI: 10.1039/c4lc00596a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This work reports on the coupling of antibody-functionalized micromotors and microwire-tagged proteins for rapid and multiplexed immunoassays. While micromotor-induced mixing accelerates the immunoreaction, tagging the proteins with microscopic particles of different sizes and shapes allows for their multiplexed discrimination, alerting of the presence of a biological threat.
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Affiliation(s)
- D Vilela
- Department of Nanoengineering, University of California San Diego, La Jolla, California 92093, USA
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Kan C, Agrawal S, Traughber B, Kaminsky D, Colussi V, Podder T, Fu P, Ponsky L, Faulhaber P, Ellis R. A Single Institution Experience With Prostate Interstitial Brachytherapy (1999-2009): Biochemical Outcomes With and Without Molecular Image Guided Dose Escalation. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.976] [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: 10/26/2022]
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Ellis R, Traughber B, Kaminsky D, Kan C, Shen Z, Pirozzi S, Piper J, Nelson D, Nelson A. SU-E-J-102: Evaluation of a Free-Form Intensity Based Deformable Contouring Method for Prostate Image-Guided Adaptive Radiation Therapy (IGART): Multiple Observer Comparison. Med Phys 2013. [DOI: 10.1118/1.4814314] [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: 11/07/2022] Open
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Lan R, Wang G, Yang L, Wang TJ, Kan C, Jin Y. Prediction of Release Characteristics of Film-Coated Urea from Structure Characterization Data of the Film. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200459] [Citation(s) in RCA: 9] [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: 11/11/2022]
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Greskovich J, Machtay M, Dill S, Kan C, Fu P, Jiang Y, Dowlati A, Ellis R. Improved 4-year Overall and Local Failure-free Survival in Stage IIIA Non-small Cell Lung Cancer After High-dose, 3D Conformal RT (3DCRT) ± Chemotherapy (CT) - A Single Institution Experience. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kan C, Hahn M, Cowley M, Kaplan W, Howell V, Marsh D. 517 Genomic Instability is a Hallmark Feature of Serous Epithelial Ovarian Cancer and May Contribute to MicroRNA Dysregulation. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71179-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Liaw C, Lim A, Koh W, Loh J, Kan C, Chan K, Ting P, Ng S, Chew S, Dua A, Tan C, Gao Q, Ho H, lee V, Tan B. Epidemiology of the four human coronaviruses 229E, HKU1, NL63 and OC43 detected over 30 months in the Singapore military. Int J Infect Dis 2012; 16. [PMCID: PMC7173272 DOI: 10.1016/j.ijid.2012.05.305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- C.W.J. Liaw
- DSO NATIONAL LABORATORIES, Singapore, Singapore,Corresponding author
| | - A.S.E. Lim
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - W.H.V. Koh
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - J.P. Loh
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - C. Kan
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - K.W. Chan
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - P.J. Ting
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - S.H. Ng
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - S.W.J. Chew
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - A. Dua
- DSO NATIONAL LABORATORIES, Singapore, Singapore
| | - C.H. Tan
- Ministry of Defence, Singapore, Singapore
| | - Q.H.C. Gao
- Ministry of Defence, Singapore, Singapore
| | - H.P.V. Ho
- Ministry of Defence, Singapore, Singapore
| | - V. lee
- Ministry of Defence, Singapore, Singapore
| | - B.H. Tan
- DSO NATIONAL LABORATORIES, Singapore, Singapore
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Ellis RJ, Greskovich J, Dill SV, Kan C, Fu P, Jiang Y, Dowlati A, Machtay M. Long-term outcome after high-dose 3D conformal RT for stage III NSCLC: A single-institution experience. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e17515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Sánchez-Mora C, Ribasés M, Ramos-Quiroga JA, Casas M, Bosch R, Boreatti-Hümmer A, Heine M, Jacob CP, Lesch KP, Fasmer OB, Knappskog PM, Kooij JJS, Kan C, Buitelaar JK, Mick E, Asherson P, Faraone SV, Franke B, Johansson S, Haavik J, Reif A, Bayés M, Cormand B. Meta-analysis of brain-derived neurotrophic factor p.Val66Met in adult ADHD in four European populations. Am J Med Genet B Neuropsychiatr Genet 2010; 153B:512-523. [PMID: 19603419 DOI: 10.1002/ajmg.b.31008] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Attention-deficit hyperactivity disorder (ADHD) is a multifactorial, neurodevelopmental disorder that often persists into adolescence and adulthood and is characterized by inattention, hyperactivity and impulsiveness. Before the advent of the first genome-wide association studies in ADHD, genetic research had mainly focused on candidate genes related to the dopaminergic and serotoninergic systems, although several other genes had also been assessed. Pharmacological data, analysis of animal models and association studies suggest that Brain-Derived Neurotrophic Factor (BDNF) is also a strong candidate gene for ADHD. Several polymorphisms in BDNF have been reported and studied in psychiatric disorders but the most frequent is the p.Val66Met (rs6265G > A) single nucleotide polymorphism (SNP), with functional effects on the intracellular trafficking and secretion of the protein. To deal with the inconsistency raised among different case-control and family-based association studies regarding the p.Val66Met contribution to ADHD, we performed a meta-analysis of published as well as unpublished data from four different centers that are part of the International Multicentre Persistent ADHD CollaboraTion (IMpACT). A total of 1,445 adulthood ADHD patients and 2,247 sex-matched controls were available for the study. No association between the p.Val66Met polymorphism and ADHD was found in any of the four populations or in the pooled sample. The meta-analysis also showed that the overall gene effect for ADHD was not statistically significant when gender or comorbidity with mood disorders were considered. Despite the potential role of BDNF in ADHD, our data do not support the involvement of p.Val66Met in the pathogenesis of this neuropsychiatric disorder.
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Affiliation(s)
- C Sánchez-Mora
- Department of Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain.,Psychiatric Genetics Unit, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain
| | - M Ribasés
- Department of Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain.,Psychiatric Genetics Unit, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain
| | - J A Ramos-Quiroga
- Department of Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain.,Department of Psychiatry and Legal Medicine, Universitat Autònoma de Barcelona, Catalonia, Spain
| | - M Casas
- Department of Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain.,Department of Psychiatry and Legal Medicine, Universitat Autònoma de Barcelona, Catalonia, Spain
| | - R Bosch
- Department of Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain
| | - A Boreatti-Hümmer
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
| | - M Heine
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
| | - C P Jacob
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
| | - K-P Lesch
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
| | - O B Fasmer
- Division of Psychiatry, Haukeland University Hospital, Bergen, Norway.,Section of Psychiatry, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - P M Knappskog
- Center of Medical Genetics and Molecular Medicine, Haukeland University Hospital, Haukeland, Norway.,Medical Genetics and Molecular Medicine, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - J J Sandra Kooij
- PsyQ, Psycho-Medical Programs, Program Adult ADHD, The Hague, The Netherlands
| | - C Kan
- Department of Psychiatry, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - J K Buitelaar
- Department of Psychiatry, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - E Mick
- Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - P Asherson
- MRC Social Genetic Developmental and Psychiatry Centre, Institute of Psychiatry, London, UK
| | - S V Faraone
- Departments of Psychiatry and Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, New York
| | - B Franke
- Department of Psychiatry, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.,Department of Human Genetics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - S Johansson
- Center of Medical Genetics and Molecular Medicine, Haukeland University Hospital, Haukeland, Norway.,Department of Biomedicine, University of Bergen, Bergen, Norway
| | - J Haavik
- Division of Psychiatry, Haukeland University Hospital, Bergen, Norway.,Department of Biomedicine, University of Bergen, Bergen, Norway
| | - A Reif
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
| | - M Bayés
- Genes and Disease Program, Center for Genomic Regulation (CRG-UPF), Barcelona, Catalonia, Spain.,CIBER Epidemiología y Salud Pública, Barcelona, Catalonia, Spain.,Centro Nacional de Genotipado (CeGen), Barcelona, Catalonia, Spain
| | - B Cormand
- Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, Catalonia, Spain.,CIBER Enfermedades Raras, Barcelona, Catalonia, Spain.,Institut de Biomedicina de la Universitat de Barcelona (IBUB), Catalonia, Spain
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Landaas ET, Johansson S, Jacobsen KK, Ribasés M, Bosch R, Sánchez-Mora C, Jacob CP, Boreatti-Hümmer A, Kreiker S, Lesch KP, Kiemeney LA, Kooij JJS, Kan C, Buitelaar JK, Faraone SV, Halmøy A, Ramos-Quiroga JA, Cormand B, Reif A, Franke B, Mick E, Knappskog PM, Haavik J. An international multicenter association study of the serotonin transporter gene in persistent ADHD. Genes Brain Behav 2010; 9:449-58. [PMID: 20113357 DOI: 10.1111/j.1601-183x.2010.00567.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Attention deficit hyperactivity disorder (ADHD) is a common behavioral disorder affecting children and adults. It has been suggested that gene variants related to serotonin neurotransmission are associated with ADHD. We tested the functional promoter polymorphism 5-HTTLPR and seven single nucleotide polymorphisms in SLC6A4 for association with ADHD in 448 adult ADHD patients and 580 controls from Norway. Replication attempts were performed in a sample of 1454 Caucasian adult ADHD patients and 1302 controls from Germany, Spain, the Netherlands and USA, and a meta-analysis was performed also including a previously published adult ADHD study. We found an association between ADHD and rs140700 [odds ratio (OR ) = 0.67; P = 0.01] and the short (S) allele of the 5-HTTLPR (OR = 1.19; P = 0.06) in the Norwegian sample. Analysis of a possible gender effect suggested that the association might be restricted to females (rs140700: OR = 0.45; P = 0.00084). However, the meta-analysis of 1894 cases and 1878 controls could not confirm the association for rs140700 [OR = 0.85, 95% confidence interval (CI) = 0.67-1.09; P = 0.20]. For 5-HTTLPR, five of six samples showed a slight overrepresentation of the S allele in patients, but meta-analysis refuted a strong effect (OR = 1.10, 95% CI = 1.00-1.21; P = 0.06). Neither marker showed any evidence of differential effects for ADHD subtype, gender or symptoms of depression/anxiety. In conclusion, our results do not support a major role for SLC6A4 common variants in persistent ADHD, although a modest effect of the 5-HTTLPR and a role for rare variants cannot be excluded.
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Affiliation(s)
- E T Landaas
- Department of Biomedicine, University of Bergen, Bergen, Norway
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Quirion JC, Kan C, Bick IRC, Husson HP. Novel dimeric indole alkaloids from Aristotelia australasica. Structural determination and synthesis. J Org Chem 2002. [DOI: 10.1021/jo00229a018] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Kan C, Akimoto S, Abe M, Okada K, Ishikawa O. Preliminary thermographic evaluation of new nitroglycerine tape on the peripheral circulatory disturbance in systemic sclerosis. Ann Rheum Dis 2002; 61:177-9. [PMID: 11796408 PMCID: PMC1753992 DOI: 10.1136/ard.61.2.177] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To evaluate the effects of newly developed nitroglycerine (NTG) tape on the peripheral circulatory disturbance in systemic sclerosis (SSc). METHODS The finger temperature (FT) of 25 patients with SSc was monitored by thermography before the application of NTG tape to the wrist and one hour afterwards. To check the placebo effect, the change of FT with placebo tape in six patients who had shown a distinct rise in FT (>2 degrees C) with NTG tape was monitored. RESULTS Twenty one patients with SSc had a low FT before the application of NTG tape (colder than mean-2SD of normal controls). FT was significantly raised in patients with SSc after the application of NTG tape (p<0.01). Patients with low FT showed a distinct rise in FT more often than patients with a normal FT (71% v 0%, p<0.01). FT was raised with NTG tape more than with placebo tape (4.2 (SD 1.9) degrees C v 2.2 (2.8) degrees C, p<0.05). CONCLUSION The application of NTG tape increases peripheral circulation in patients with SSc who have distinct circulatory disturbance. The application of NTG tape may improve peripheral circulatory disturbance in SSc.
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Affiliation(s)
- C Kan
- Department of Dermatology, Gunma University School of Medicine, Japan.
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Abe M, Kan C, Zaw KK, Ishikawa O. Induction of matrix metalloproteinase-1 in in vitro experimental wound model using a novel three-dimensional culture system. Eur J Dermatol 2001; 11:112-6. [PMID: 11275805] [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: 02/19/2023]
Abstract
The aim of this study was to determine whether experimentally punched wounds may influence the connective tissue metabolism of human fibroblast in a three dimensional culture supplemented with L-ascorbic acid. This culture was designed for human dermal fibroblasts to organize a three-dimensional dermis-like structure by accumulating self-produced extracellular matrixes. In order to examine the effects of the wound, mRNA expression and production of type I collagen, matrix metalloproteinase-1 (MMP-1) and tissue inhibitors of metalloproteinase-1 (TIMP-1) were sequentially examined up to 72 hrs after the wound was created. The levels of mRNA expression of MMP-1 were higher at 12 and 24 hrs compared with the initial level and then gradually decreased in studies both with and without wounds. However, the levels of mRNA expression of MMP-1 between 6 to 48 hrs were higher in wounds than in non-wounds. The production of proMMP-1 was also significantly enhanced. There were no significant differences in the levels of mRNA expression or the production of type I collagen and TIMP-1 with the presence or absence of a wound. These results indicate that MMP-1 is synthesized to initiate the tissue restoration in response to the disruption of the three dimensional structure. Thus, this culture system provides a new experimental tool with which to examine the direct effect of mechanical changes on connective tissue metabolism in human dermal fibroblasts.
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Affiliation(s)
- M Abe
- Department of Dermatology, Gunma University School of Medicine, 3-39-22, Showa-machi, Maebashi, Gunma, 371-8511, Japan.
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Abstract
[figure: see text] Photolysis of an allal C-3 azidoformate provoked intramolecular nitrene insertion into the glycal C=C unit and allowed direct incorporation of alcohol nucleophiles as beta-disposed substituents at C-1. The 2-amido allopyranoside products were elaborated via N-acylation and selective oxazolidinone hydrolysis, providing N-Boc-protected 2-amino sugars and simplifying stereochemical assignments. Synthesis of the potentially labile allal azidoformate was achieved via reaction of the corresponding carbonyl imidazolide with trimethylsilyl azide, facilitated by dibutyltin oxide.
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Affiliation(s)
- C Kan
- Department of Chemistry, Barnard College, 3009 Broadway, New York, New York 10027, USA
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Kan C, Capjack CE, Rankin R, Brabec T, Burnett NH. Phase-matched frequency conversion in ionizing atomic gases. Phys Rev A 1996; 54:R1026-R1029. [PMID: 9913663 DOI: 10.1103/physreva.54.r1026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Kan C, Capjack CE, Rankin R, Burnett NH. Spectral and temporal structure in high harmonic emission from ionizing atomic gases. Phys Rev A 1995; 52:R4336-R4339. [PMID: 9912853 DOI: 10.1103/physreva.52.r4336] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Burnett NH, Kan C, Corkum PB. Ellipticity and polarization effects in harmonic generation in ionizing neon. Phys Rev A 1995; 51:R3418-R3421. [PMID: 9912118 DOI: 10.1103/physreva.51.r3418] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Tournon J, Gastiger V, Forgacs P, Kan C, Husson HP. Systematically Significant Indole Alkaloids from Peschiera van heurckii. Planta Med 1994; 60:496. [PMID: 17236078 DOI: 10.1055/s-2006-959554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Affiliation(s)
- J Tournon
- CNRS, LACITO, 44 rue de l'Amiral Mouchez, F-75014 Paris, France
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Quirion JC, Husson HP, Kan C, Bick IRC. Structure of Aristoaristone, A New Dimeric Indole Alkaloid fromAristotelia Australasica. ACTA ACUST UNITED AC 1993. [DOI: 10.1080/10575639308043453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
Serum taken from severely traumatized victims suppresses in vitro the response of normal lymphocytes to the mitogenic stimulant phytohemagglutinin (PHA). In the postburn period, fibrin degradation products (fragments D and E) are elevated in a high percentage. Controversy exists as to whether these fragments contribute to what is clinically evident as cell-mediated immune (CMI) suppression. Purified fragments D and E were isolated over an ion exchange cellulose column after activating, with streptokinase, a solution containing fibrinogen and plasminogen. Lymphocytes from six volunteers were cultured with PHA and serial dilutions of fragments D and E; each was analyzed for ability to incorporate radiolabeled thymidine. Fragment E possessed in vitro CMI suppression at pharmacologic doses. Fragment D demonstrated immune suppressive capabilities at doses approximating those estimated to occur in the acute postburn phases of injury.
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Affiliation(s)
- J J Ferrara
- Department of Surgery, University of South Alabama, Mobile 36617
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Chiaroni A, Arseniyadis S, Kan C, Riche C. Structure of 5-ethyl-3-phenylperhydropyrrolo[2,1-b]oxazolidine-5-carbonitrile. Acta Crystallogr C 1988. [DOI: 10.1107/s0108270188006250] [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: 11/11/2022] Open
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36
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Carreiras MDC, Kan C, Deverre JR, Hadi AH, Quirion JC, Husson HP. Methoxy-10 et Methoxy-12 Kopsinones, Alcaloïdes Nouveaux Extraits de Kopsia deverrei. J Nat Prod 1988; 51:806-808. [PMID: 21401150 DOI: 10.1021/np50058a032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Abstract
Ten monomeric indole alkaloids have been identified from the roots of KOPSIA OFFICINALIS. Four of them are known: (-)-kopsinine 1, (+)-5,22-dioxokopsane 2, (-)-tetrahydroalstonine 4, and (-)-quebrachamine 3; and six are new: (-)-isoeburnamine 5 (enantiomer of the known alkaloid (+)-isoeburnamine), (-)-N-methoxycarbonyl-12-methoxykopsinaline 7, (-)-N-methoxycarbonyl-11,12-methylenedioxy kopsinaline 8, (-)-N-methoxycarbonyl-11,12-dimethoxykopsinaline 9, (-)-11,12-methylenedioxykopsinaline 10, and (-)-12-methoxykopsinaline 11.
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Affiliation(s)
- X Z Feng
- Institut de Matière Médicale, Académie Chinoise des Sciences Médicales, Pékin, Chine
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Abstract
Eleven monomeric indole alkaloids have been isolated from the roots of Ervatamia hainanensis. Nine of them are known: coronaridine 1, coronaridine hydroxyindolenine 2, heyneanine 3, vobasine 4, perivine 5, ibogamine 6, geissoschizol 7, 10-hydroxygeissoschizol 8 and 3-oxocoronaridine 9; and two are new: 10-hydroxyheyneanine 10 and 3-(beta-hydroxyethyl)-coronaridine 11.
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Affiliation(s)
- X Z Feng
- Institut de Chimie des Substances Naturelles du CNRS, Gif-sur-Yvette, France
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Kan C, Husson HP, Kan SK, Lounasmaa M. [Determination of Structures by H NMR at 400 MHz: two new alkaloids from Tabernaemontana albiflora]. Planta Med 1981; 41:195-7. [PMID: 17401839 DOI: 10.1055/s-2007-971699] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Affiliation(s)
- C Kan
- Institut de Chimie des Substances Naturelles du C.N.R.S., Gif-sur-Yvette, France
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Kan C, Husson HP, Kan SK, Lounasmaa M. [Determination of structures by H NMR at 400 MHz: albifloranine, a new alkaloid from Tabernaemontana albiflora]. Planta Med 1981; 41:72-4. [PMID: 17401820 DOI: 10.1055/s-2007-971678] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The structure of albifloranine 1, a new alkaloid of ibogane type from the stem bark of Tabernaemontana albiflora (M IQ.) Pull. (Apocynaceae) has been determined. A detailed (1)H NMR study of albifloranine 1, coronaridine 2 and heyneanine 3 is presented.
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Affiliation(s)
- C Kan
- Institut de Chimie des Substances Naturelles du C.N.R.S., Gif-Sur-Yvette, France
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Mathé G, Hayat M, Chenu E, Husson HP, Thevenet T, Kan C, Potier P. Oncostatic effects of Alangium vitiense extracts (ICIG-EORTC 1131, 1186 and 1207) on lymphoid murine tumors. Cancer Res 1978; 38:1465-7. [PMID: 580415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A total alkaloid and two purified alkaloid extracts of Alangium vitiense were found to be oncostatic for L1210 leukemia; the total alkaloid exerted a noticeable activity, and the purified extracts exerted a borderline activity. These two purified extracts are noticeably oncostatic for two other lymphoid neoplasias in mice, P388 leukemia and Gardner lymphosarcoma. These compounds are not active on Warner myelomonocytic leukemia WEH13 or on B16 melanoma.
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Hayat M, Mathé G, Chenu E, Husson HP, Sevenet T, Kan C, Potier P. [Oncostatic activity of extracts from Alangium vitiense on murine lymphoid neoplasms]. C R Acad Hebd Seances Acad Sci D 1977; 285:1191-3. [PMID: 413657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A total alkaloid and two purified alkaloid extracts of Alangium Vitiense were revealed by our experimental screening to be oncostatic on L1210 leukemia and two other lymphoid neoplasias in Mice. They are not active on myelomonocytoid leukemia WEHI3 nor on B16 melanoma.
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Uehling DT, Hussey JL, Belzer FO, Kan C, Bach FH. MLC incompatibility index for donor--recipient matching. Transplant Proc 1977; 9:103-5. [PMID: 141120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Bach FH, Bach ML, Sondel PM, Sheehy MJ, Jarrett-Toth E, Benike C, Kan C. Assay of HLA-D disparity. Transplant Proc 1977; 9:61-5. [PMID: 67681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Wenkert E, Cochran DW, Hagaman EW, Schell FM, Neuss N, Katner AS, Potier P, Kan C, Plat M, Koch M, Mehri H, Poisson J, Kunesch N, Rolland Y. Carbon-13 nuclear magnetic resonance spectroscopy of naturally occurring substances. XIX. Aspidosperma alkaloids. J Am Chem Soc 1973; 95:4990-5. [PMID: 4741281 DOI: 10.1021/ja00796a035] [Citation(s) in RCA: 124] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Cavé A, Bruneton J, Ahond A, Bui AM, Husson HP, Kan C, Lukacs G, Potier P. Structure analysis by 13C nmr spectroscopy of criophylline, a new dimeric indole alkaloid. Tetrahedron Lett 1973. [DOI: 10.1016/s0040-4039(01)87393-7] [Citation(s) in RCA: 8] [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: 10/18/2022]
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Le Men J, Kan C, Potier P, Janot MM. [Preliminary study of the alkaloids in Cinchona leaves; isolation of quinamine and 2 new alkaloids: cinchophyllamine and isocinchophyllamine]. Ann Pharm Fr 1965; 23:691-5. [PMID: 5859199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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