1
|
Zhang H, Mo S, Zhang J, Li B, Chen Y, Huang X, Li S, Lei L. The mediating role of sleep quality in the relationship between social support and depressive symptoms in early pregnant women. Am J Transl Res 2023; 15:6314-6320. [PMID: 37969198 PMCID: PMC10641345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/18/2023] [Indexed: 11/17/2023]
Abstract
OBJECTIVE To explore the mediating effect of sleep quality between social support and depressive symptoms in pregnant woman at the early pregnancy stage. METHODS Pittsburgh sleep quality index (PSQI), social support revalued scale (SSRS), and self-rating depression scale (SDS) were used to investigate the sleep quality, social support status and depression of 269 pregnant women in early pregnancy in Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital from July 2022 to December 2022. Pearson correlation analyses and Bootstrap were used to test the correlation and mediating effect between variables. RESULTS The social support scores of pregnant women were inversely proportional to the scores of sleep quality and depression (r = -0.178 and -0.219, P < 0.05). The sleep quality of pregnant woman score was positively correlated with depression symptom score (r = 0.139, P < 0.05). The sleep quality of pregnant women in early pregnancy played a partial mediating role between social support and depressive symptoms, and the mediating effect value was -0.029 (95% CI: -0.057--0.007). CONCLUSION Social support can affect the occurrence of depression in pregnant woman at the early pregnancy stage, and sleep quality plays a partial mediating role.
Collapse
Affiliation(s)
- Hua Zhang
- Department of Clinical Psychology, Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital Nanning, Guangxi, China
| | - Shengkai Mo
- Department of Clinical Psychology, Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital Nanning, Guangxi, China
| | - Jinshan Zhang
- Department of Clinical Psychology, Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital Nanning, Guangxi, China
| | - Bing Li
- Department of Clinical Psychology, Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital Nanning, Guangxi, China
| | - Yanyan Chen
- Department of Clinical Psychology, Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital Nanning, Guangxi, China
| | - Xuebing Huang
- Department of Clinical Psychology, Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital Nanning, Guangxi, China
| | - Shanshan Li
- Department of Clinical Psychology, Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital Nanning, Guangxi, China
| | - Ling Lei
- Department of Clinical Psychology, Guangxi Zhuang Autonomous Region Maternal and Child Health Hospital Nanning, Guangxi, China
| |
Collapse
|
2
|
Zhu J, Kang C, Mo S, Zhang Y, Xiao X, Kong F, Yin G. Regulating the Solvation Shell Structure of Lithium Ions for Smooth Li Metal Deposition in Quasi-Solid-State Batteries. ChemSusChem 2023; 16:e202202060. [PMID: 36633554 DOI: 10.1002/cssc.202202060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 01/12/2023] [Indexed: 06/17/2023]
Abstract
Gel polymer electrolytes (GPE) are promising next-generation electrolytes for high-energy batteries, combining the multiple advantages of liquid and all-solid-state electrolytes. Herein, we a synthesized GPE using poly(ethylene glycol)acrylate (PEGDA) in order to understand how the GPE efficiently inhibits lithium dendrite formation and growth. The effects of PEGDA on the solvation shell structure of the lithium ion are investigated using density functional theory (DFT) and ab initio molecular dynamics (AIMD) simulations, which are also supported by Raman spectroscopy. The GPE electrolytes with optimal PEGDA concentration exhibit high transference numbers (t Li + ${{_{{\rm Li}{^{+}}}}}$ =0.72) and ionic conductivity (σ=3.24 mS cm-1 ). A symmetric lithium ion battery using GPE can be stably cycled for 1200 h in comparison to 320 h in a liquid electrolyte (LE), possibly owing to the high content of LiF (17.9 %) in the solid-electrolyte interphase film of the GPE cell. The observed concentration/electric field gradient observed through the finite element method also accounts for the good cycling performance. In addition, a LiCoO2 |GPE|Li cell demonstrates excellent capacity retention of 87.09 % for 200 cycles; this approach could present promising guidelines for the design of high-energy lithium batteries.
Collapse
Affiliation(s)
- Jiaming Zhu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, P. R. China
| | - Cong Kang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, P. R. China
| | - Shengkai Mo
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, P. R. China
| | - Yan Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, P. R. China
| | - Xiangjun Xiao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, P. R. China
| | - Fanpeng Kong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, P. R. China
| | - Geping Yin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, P. R. China
| |
Collapse
|
3
|
Chiattone CS, Miranda E, Pereira J, Cecyn KZ, Castro NS, Brasil SAB, Farias DFC, Bellesso M, Duffles G, Borducchi D, Gonzaga Y, Baptista RLR, Vilarim CC, Macedo CCG, Dias M, Salvino MA, Tavares JV, Nabhan S, Cunha-Junior AD, Zing N, Silva GF, Ribeiro GN, Negreiros E, Schaffel R, Figueiredo VLP, Souto-Filho JTD, Radtke PPG, Pont MD, Nogueira FL, Hamerschlak N, Cle DV, Gaiolla R, Duarte FB, Souza RR, Mo S, Hallack-Neto A, Rabelo YS, Ribeiro EFO, Cordeiro A, Perini G, Bueno ND, Matedi MAL, Cury P, Delamain MT, Federico M, Souza CA. PROJETO T-CELL BRASIL: ATUALIZAÇÃO DO PROJETO PIONEIRO DE COLETA DE DADOS DE PACIENTES COM LNH DE CÉLULAS T NAS CINCO REGIÕES BRASILEIRAS. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.153] [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
|
4
|
Deng D, Hu B, Zhang Z, Mo S, Yang M, Chen D. Alkylation of Aromatic Amines with Trialkyl Amines Catalyzed by a Defined Iridium Complex with a 2-Hydroxypyridylmethylene Fragment. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00172] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Danfeng Deng
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Bowen Hu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Ziyu Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Shengkai Mo
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Min Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| | - Dafa Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, PR China
| |
Collapse
|
5
|
Seternes A, Rekstad LC, Mo S, Klepstad P, Halvorsen DL, Dahl T, Björck M, Wibe A. Open Abdomen Treated with Negative Pressure Wound Therapy: Indications, Management and Survival. World J Surg 2017; 41:152-161. [PMID: 27541031 DOI: 10.1007/s00268-016-3694-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Open abdomen treatment (OAT) is a significant burden for patients and is associated with considerable mortality. The primary aim of this study was to report survival and cause of mortality after OAT. Secondary aims were to evaluate length of stay (LOS) in intensive care unit (ICU) and in hospital, time to abdominal closure and major complications. METHODS Retrospective review of prospectively registered patients undergoing OAT between October 2006 and June 2014 at Trondheim University Hospital, Norway. RESULTS The 118 patients with OAT had a median age of 63 (20-88) years. OAT indications were abdominal compartment syndrome (ACS) (n = 53), prophylactic (n = 29), abdominal contamination/second look laparotomy (n = 22), necrotizing fasciitis (n = 7), hemorrhage packing (n = 4) and full-thickness wound dehiscence (n = 3). Eight percent were trauma patients. Vacuum-assisted wound closure (VAWC) with mesh-mediated traction (VAWCM) was used in 92 (78 %) patients, the remaining 26 (22 %) had VAWC only. Per-protocol primary fascial closure rate was 84 %. Median time to abdominal closure was 12 days (1-143). LOS in the ICU was 15 (1-89), and in hospital 29 (1-246) days. Eighty-one (68 %) patients survived the hospital stay. Renal failure requiring renal replacement therapy (RRT) (OR 3.9, 95 % CI 1.37-11.11), ACS (OR 3.1, 95 % CI 1.19-8.29) and advanced age (OR 1.045, 95 % CI 1.004-1.088) were independent predictors of mortality in multivariate analysis. The nine patients with an entero-atmospheric fistula (EAF) survived. CONCLUSION Two-thirds of the patients treated with OAT survived. Renal failure with RRT, ACS and advanced age were predictors of mortality, whereas EAF was not associated with increased mortality.
Collapse
Affiliation(s)
- A Seternes
- Departments of Vascular Surgery, St. Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas gate 3, 7006, Trondheim, Norway. .,Departments of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Høgskoleringen 1, 7491, Trondheim, Norway. .,Departments of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), 7006, Trondheim, Norway.
| | - L C Rekstad
- Departments of Gastrointestinal Surgery, St. Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas gate 3, 7006, Trondheim, Norway
| | - S Mo
- Departments of Anesthesiology and Intensive Care Medicine, St. Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas gate 3, 7006, Trondheim, Norway
| | - P Klepstad
- Departments of Anesthesiology and Intensive Care Medicine, St. Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas gate 3, 7006, Trondheim, Norway.,Departments of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), 7006, Trondheim, Norway
| | - D L Halvorsen
- Departments of Urologic Surgery, St. Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas gate 3, 7006, Trondheim, Norway
| | - T Dahl
- Departments of Vascular Surgery, St. Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas gate 3, 7006, Trondheim, Norway.,Departments of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), 7006, Trondheim, Norway
| | - M Björck
- Department of Surgical Sciences, Section of Vascular Surgery, Uppsala University, 751 85, Uppsala, Sweden
| | - A Wibe
- Departments of Gastrointestinal Surgery, St. Olavs Hospital, Trondheim University Hospital, Prinsesse Kristinas gate 3, 7006, Trondheim, Norway.,Departments of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Høgskoleringen 1, 7491, Trondheim, Norway
| |
Collapse
|
6
|
Li Y, Feng Y, Dai W, Mo S, Li Q, Cai S. Incidence and survival outcomes in mucinous and signet-ring cell colorectal cancers differ from classical adenocarcinoma: A SEER analysis. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.033] [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: 11/12/2022] Open
|
7
|
Mo S, Huang B, Dai W, Li Q, Cai G. Survival contradiction between stage IIA and stage IIIA rectal cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.023] [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: 11/13/2022] Open
|
8
|
Mo S, Dai W, Li Y, Feng Y, Zhang L, Li Q, Cai G. Prognostic value of an autophagy-related signature for early relapse in stage I-III colon cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.002] [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: 11/12/2022] Open
|
9
|
Dai W, Li Y, Mo S, Cai G. A robust gene signature for the detection of early relapse in stage I-III colon cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.098] [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: 11/13/2022] Open
|
10
|
Abstract
Non-selective beta-blockers and handling of esophageal varices has been key elements in the treatment of portal hypertension in recent decades. Liver vein catheterization has been essential in diagnosis and monitoring of portal hypertension, but ongoing needs for noninvasive tools has led to research in areas of both biomarkers, and transient elastography, which displays promising results in discerning clinically significant portal hypertension. Novel research into the areas of hepatic stellate cell function and the dynamic components of portal hypertension has revealed promising areas of treatment modalities, targeting intestinal decontamination, angiogenesis, inflammation and oxidative stress. Future studies may reveal if these initiatives lead to developments of new drugs for treatment of portal hypertension.
Collapse
Affiliation(s)
- N Kimer
- a Gastrounit, Medical Division , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark.,b Center for Diagnostic Imaging and Research, Department of Clinical Physiology and Nuclear Medicine , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark
| | - S Wiese
- a Gastrounit, Medical Division , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark.,b Center for Diagnostic Imaging and Research, Department of Clinical Physiology and Nuclear Medicine , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark
| | - S Mo
- a Gastrounit, Medical Division , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark
| | - S Møller
- b Center for Diagnostic Imaging and Research, Department of Clinical Physiology and Nuclear Medicine , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark
| | - F Bendtsen
- a Gastrounit, Medical Division , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark
| |
Collapse
|
11
|
Liu P, Zhao Y, Qin R, Mo S, Chen G, Gu L, Chevrier DM, Zhang P, Guo Q, Zang D, Wu B, Fu G, Zheng N. Photochemical route for synthesizing atomically dispersed palladium catalysts. Science 2016; 352:797-801. [DOI: 10.1126/science.aaf5251] [Citation(s) in RCA: 1199] [Impact Index Per Article: 149.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 04/05/2016] [Indexed: 11/02/2022]
|
12
|
Avila M, Dyment DA, Sagen JV, St-Onge J, Moog U, Chung BHY, Mo S, Mansour S, Albanese A, Garcia S, Martin DO, Lopez AA, Claudi T, König R, White SM, Sawyer SL, Bernstein JA, Slattery L, Jobling RK, Yoon G, Curry CJ, Merrer ML, Luyer BL, Héron D, Mathieu-Dramard M, Bitoun P, Odent S, Amiel J, Kuentz P, Thevenon J, Laville M, Reznik Y, Fagour C, Nunes ML, Delesalle D, Manouvrier S, Lascols O, Huet F, Binquet C, Faivre L, Rivière JB, Vigouroux C, Njølstad PR, Innes AM, Thauvin-Robinet C. Clinical reappraisal of SHORT syndrome with PIK3R1 mutations: toward recommendation for molecular testing and management. Clin Genet 2015; 89:501-506. [PMID: 26497935 DOI: 10.1111/cge.12688] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 10/10/2015] [Accepted: 10/16/2015] [Indexed: 12/01/2022]
Abstract
SHORT syndrome has historically been defined by its acronym: short stature (S), hyperextensibility of joints and/or inguinal hernia (H), ocular depression (O), Rieger abnormality (R) and teething delay (T). More recently several research groups have identified PIK3R1 mutations as responsible for SHORT syndrome. Knowledge of the molecular etiology of SHORT syndrome has permitted a reassessment of the clinical phenotype. The detailed phenotypes of 32 individuals with SHORT syndrome and PIK3R1 mutation, including eight newly ascertained individuals, were studied to fully define the syndrome and the indications for PIK3R1 testing. The major features described in the SHORT acronym were not universally seen and only half (52%) had four or more of the classic features. The commonly observed clinical features of SHORT syndrome seen in the cohort included intrauterine growth restriction (IUGR) <10th percentile, postnatal growth restriction, lipoatrophy and the characteristic facial gestalt. Anterior chamber defects and insulin resistance or diabetes were also observed but were not as prevalent. The less specific, or minor features of SHORT syndrome include teething delay, thin wrinkled skin, speech delay, sensorineural deafness, hyperextensibility of joints and inguinal hernia. Given the high risk of diabetes mellitus, regular monitoring of glucose metabolism is warranted. An echocardiogram, ophthalmological and hearing assessments are also recommended.
Collapse
Affiliation(s)
- M Avila
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Service de Pédiatrie 1, Centre Hospitalier Universitaire Dijon, Dijon, France
| | - D A Dyment
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada
| | - J V Sagen
- Hormone Laboratory, Haukeland University Hospital, Bergen, Norway.,KJ Jebsen Center for Diabetes Research, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - J St-Onge
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,CHU Dijon, Laboratoire de Génétique Moléculaire, Dijon, France
| | - U Moog
- Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany
| | - B H Y Chung
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - S Mo
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - S Mansour
- SW Thames Regional Genetics Service, St. George's Hospital Medical School, London, SW17 0RE, UK
| | - A Albanese
- Paediatric Endocrine Unit, St George's Hospital, London, UK
| | - S Garcia
- Institute of Medical and Molecular Genetics (INGEMM), La Paz University Hospital, Madrid, Spain.,Instituto de Salud Carlos III, Unit 753, Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - D O Martin
- Department of Ophthalmology, Hospital Central de la Cruz Roja San Jose y Santa Adela, Madrid, Spain
| | - A A Lopez
- Puerta de Hierro, University Hospital, Madrid, Spain
| | - T Claudi
- Department of Medicine, Bodø, Norway
| | - R König
- Department of Human Genetics, University of Frankfurt, Frankfurt, Germany
| | - S M White
- Victorian Clinical genetics Services, Murdoch Childrens Research institute, Parkville, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - S L Sawyer
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada
| | - J A Bernstein
- Division of Medical Genetics, Department of Pediatrics, Stanford University, Stanford, CA, USA
| | - L Slattery
- Division of Medical Genetics, Department of Pediatrics, Stanford University, Stanford, CA, USA
| | - R K Jobling
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - G Yoon
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - C J Curry
- Genetic Medicine/, University of California, San Francisco, CA, USA
| | - M L Merrer
- Département de Génétique, Hôpital Necker Enfants Malades, Paris, France
| | - B L Luyer
- Service de Pédiatrie, CH Le Havre, Le Havre, France
| | - D Héron
- Département de Génétique et Centre de Référence "Déficiences intellectuelles de causes rares", Paris, France
| | | | - P Bitoun
- Service de Pédiatrie, Bondy, France
| | - S Odent
- Service de Génétique clinique, Rennes, France.,UMR CNRS 6290 IGDR, Universitė Rennes, Rennes, France
| | - J Amiel
- Département de Génétique, Hôpital Necker Enfants Malades, Paris, France
| | - P Kuentz
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France
| | - J Thevenon
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
| | - M Laville
- Département d'Endocrinologie, Diabétologie et Nutrition, Hospices Civils de Lyon, Centre Hospitalier Lyon-Sud, Pierre-Bénite, France.,Institut National de la Santé et de la Recherche Médicale Unité 1060, Centre Européen pour la nutrition et la Santé, Centre de Recherche en Nutrition Humaine Rhône-Alpes, Université Claude Bernard Lyon, Pierre-Bénite, France
| | - Y Reznik
- Service d'Endocrinologie, Centre Hospitalier Universitaire Côte-de-Nacre, Caen, France
| | - C Fagour
- Département d'Endocrinologie, Hôpital Haut-Lévêque, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
| | - M-L Nunes
- Département d'Endocrinologie, Hôpital Haut-Lévêque, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
| | - D Delesalle
- Service de pédiatrie, CH de Valencienne, Valencienne, France
| | - S Manouvrier
- Centre de Référence CLAD NdF - Service de génétique clinique Guy Fontaine, CHRU de Lille - Hôpital Jeanne de Flandre, Lille, France
| | - O Lascols
- INSERM, UMR_S938, Centre de Recherche Saint-Antoine, Paris, France.,UPMC Univ Paris 06, Paris, France.,ICAN, Institute of Cardiometabolism And Nutrition, Groupe Hospitalier Universitaire La Pitié-Salpêtrière, Paris, France.,AP-HP, Hôpital Saint-Antoine, Laboratoire Commun de Biologie et Génétique Moléculaires, Paris, France
| | - F Huet
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Service de Pédiatrie 1, Centre Hospitalier Universitaire Dijon, Dijon, France
| | - C Binquet
- Centre d'Investigation Clinique-Epidémiologique Clinique/essais cliniques du CHU de Dijon, Dijon, France
| | - L Faivre
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
| | - J-B Rivière
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,CHU Dijon, Laboratoire de Génétique Moléculaire, Dijon, France
| | - C Vigouroux
- INSERM, UMR_S938, Centre de Recherche Saint-Antoine, Paris, France.,UPMC Univ Paris 06, Paris, France.,ICAN, Institute of Cardiometabolism And Nutrition, Groupe Hospitalier Universitaire La Pitié-Salpêtrière, Paris, France.,AP-HP, Hôpital Saint-Antoine, Laboratoire Commun de Biologie et Génétique Moléculaires, Paris, France
| | - P R Njølstad
- Department of Pediatrics, Haukeland, University Hospital, Bergen, Norway
| | - A M Innes
- Department of Medical Genetics, University of Calgary, Calgary, Canada.,Alberta Children's Hospital Research Institute for Child and Maternal Health, University of Calgary, Calgary, Canada
| | - C Thauvin-Robinet
- EA4271 "Génétique des Anomalies du Développement" (GAD), Université de Bourgogne, Dijon, France.,Centre de Génétique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs de l'interrégion Est, FHU-TRANSLAD, Dijon, France
| |
Collapse
|
13
|
Abstract
BACKGROUND AND OBJECTIVE Members of the phylum Synergistetes have previously been identified within periodontitis subgingival plaque and are considered putative periodontopathogens. This study compared the diversity of subginigval Synergistetes in a cohort of subjects with periodontitis (n = 10) vs. periodontitis-free controls (n = 10). MATERIAL AND METHODS Pooled subgingival plaque samples from all deep periodontal pockets or all sulci were collected from the periodontitis and periodontitis-free subjects, respectively. Bacterial 16S rRNA genes were PCR-amplified from purified subgingival plaque DNA using a Synergistetes 'selective' primer set. PCR products were cloned and sequenced to analyze the prevalence and diversity of Synergistetes operational taxonomic units (OTUs) present in plaque samples of both subject groups. RESULTS A total of 1030 non-chimeric 16S rRNA clones were obtained, of which 162 corresponded to members of the phylum Synergistetes. A significantly larger number of Synergistetes clones were obtained from periodontitis subgingival plaque than from periodontitis-free controls (25.4% vs. 5.9%, p < 0.001). All Synergistetes clones corresponded to cluster A oral Synergistetes, and fell into 31 OTUs (99% sequence identity cut-off). Twenty-nine Synergistetes OTUs were detected in the periodontitis group while eight were detected in the periodontitis-free group (p < 0.001). Five Synergistetes OTUs; including one OTU corresponding to the recently-characterized species Fretibacterium fastidiosum, were more prevalent in the periodontitis subjects (p < 0.05). CONCLUSION OTUs belonging to oral Synergistetes cluster A were more readily detectable and were more diverse in subgingival plaque from periodontitis subjects compared with periodontitis-free controls. Specific Synergistetes OTUs appear to be associated with periodontitis.
Collapse
Affiliation(s)
- M You
- Oral Diagnosis and Polyclinics, Prince Philip Dental Hospital, The University of Hong Kong, Hong Kong SAR, China
| | | | | | | |
Collapse
|
14
|
Chen J, Wang N, Wang Z, Wang D, Luo H, Mo S. 10 ELLAGIC ACID ANTI-ANGIOGENESIS EFFECTS VIA VEGFR-2 SIGNALING PATHWAY IN BREAST CANCER. Maturitas 2012. [DOI: 10.1016/s0378-5122(12)70121-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
15
|
Abstract
AIM Rectal carcinoid is a rare rectal tumour with a good prognosis. The aim of this study was to assess its clinicopathological characteristics and prognostic factors in a single institution. METHOD Clinical and pathological information was retrospectively collected in a single institution, and patients' outcomes were determined. Multivariate analyses were performed to find independent prognostic factors attributed to overall survival. RESULTS A total of 106 patients with rectal carcinoid were included. In all, 66% of the patients underwent transanal local excision and 34% had transabdominal surgery. The 5-year survival rate was 87%. Muscularis invasion was the only independent prognostic factor for predicting 5-year survival (P = 0.00046). Tumour size was found to be significantly associated with muscular invasion (P = 0.00003). The area under the curve of tumour size in the receiver operating characteristic curve for predicting muscular invasion was 0.92. CONCLUSION Patients with rectal carcinoid have a good prognosis. Muscular invasion is an independent risk factor of survival.
Collapse
Affiliation(s)
- M Wang
- Department of Colorectal Surgery, Cancer Hospital of Fudan University, Shanghai, China
| | | | | | | | | | | |
Collapse
|
16
|
Cai Q, Sun M, Lu H, Zhang T, Mo S, Xu Y, Cai S, Zhu X, Shi D. [Clinicopathological and molecular genetic analysis in Chinese typical hereditary nonpolyposis colorectal cancer pedigrees]. Zhonghua Bing Li Xue Za Zhi 2001; 30:339-44. [PMID: 11769729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To investigate the clinicopathological and molecular genetic characteristics of Chinese hereditary nonpolyposis colorectal cancer (HNPCC) pedigrees. METHODS Four Chinese HNPCC pedigrees were studied using microdissection, microsatellite instability analysis, immunohistochemistry staining and direct DNA sequencing for hMSH2 and hMLH1 genes. RESULTS All five tumor tissues from 4 probands showed high level of microsatellite instability at more than 2 loci(RER + phenotype). Three of 4 cases lost hMSH2 protein expression and one case showed no hMLH1 protein expression. Three pathological germline mutations (2 on hMSH2 and 1 on hMLH1) were identified. CONCLUSIONS Chinese typical HNPCC kindreds showed relatively frequent germline mutations of mismatch repair genes. Microsatellite instability analysis and immunohistochemistry staining might be the effective screening methods before direct DNA sequencing for the detection of mismatch repair genes. It is necessary to establish clinical criteria and molecular diagnostic strategies more suitable for Chinese HNPCC kindreds.
Collapse
Affiliation(s)
- Q Cai
- Department of Pathology, Cancer Hospital, Fudan University, Shanghai 200032, China
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Wu X, Li J, Mo S, Zhou Y, Shen W. [Clinical study on treatment 82 cases of chronic primary glomerulopathy with deficiency of yin with damp-heat symptom with dan shao tang]. Zhong Yao Cai 2001; 24:465-7. [PMID: 11563193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
OBJECTIVE To investigate the treatment effect of Dan Shao Tang on chronic primary glomerulopathy with deficiency of Yin with damp-heat symptom. METHODS 132 cases of chronic glomerulopathy with deficiency of Yin with damp-heat symptom, which divided into two groups at random, the 82 cases which were the therapy group using Dan Shao Tang and west medicine, and the other 50 cases which treated only by west medicine. We observed the effect and indexes change including renal function, proteinuria, hematuria. RESULTS The effective rate of the therapy group is 90.24%, and the effective rate of the control group is 66% (P < 0.05), The therapy group is superior to the control group in improving renal function, decreasing proteinuria and hematuria in evidence(P < 0.05). CONCLUSION Dan Shao Tang is effective to treatment on chronic primary glomerulopathy with deficiency of Yin with damp-heat symptom.
Collapse
Affiliation(s)
- X Wu
- First Affiliated Hospital, Sun Yat-sen University of Medical Sciences, Guangzhou 510080
| | | | | | | | | |
Collapse
|
18
|
Abstract
The geometric properties of the critical fluctuations in Abelian gauge theories such as the Ginzburg-Landau model are analyzed in zero background field. Using a dual description, we obtain scaling relations between exponents of geometric and thermodynamic nature. In particular, we connect the anomalous scaling dimension eta of the dual matter field to the Hausdorff dimension D(H) of the critical fluctuations, which are fractal objects. The connection between the values of eta and D(H), and the possibility of having a thermodynamic transition in finite background field, is discussed.
Collapse
Affiliation(s)
- J Hove
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | | | | |
Collapse
|
19
|
Mo S, Liu Y, Yang Y, Cheng Y. [X-ray photoelectron spectroscopy (XPS) of carbon nitride (CN) films]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:734-737. [PMID: 15822282] [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: 05/24/2023]
Abstract
The chemical structure of carbon nitride thin films, prepared by rf-dc plasma enhanced chemical vapor deposition (PECVD) was studied by XPS. Analyzing the C(1s) and N(1s) core level lines indicated two types of chemical structure N-sp3C and N-sp2C binding states existed in the CN films. There is also little N-spC binding state in the CN film with a nitrogen content of 22%. The ratio of N/C in N-sp3C binding state is 1.28 which is near 4 : 3, thus demonstrated the existence of C3N4-like phase. High nitrogen content in the CN films is useful to increase the content of beta-C3N4 phase. Light changes of the chemical structure of the CN films can be observed under ion irradiation. With the increase of ion dose, the ratio of N-sp3C/N-sp2C increase, while the N/C ratio in the films decrease.
Collapse
Affiliation(s)
- S Mo
- Department of Analysis and Measurement Science, Wuhan University, 430072 Wuhan
| | | | | | | |
Collapse
|
20
|
Mo S, Tang Y, Liang Y. [Study on the determination method of Mo in the internal organs of body by graphite furnace atomic absorption spectrophotometry]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:200-202. [PMID: 15819007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A new method for the determination of Mo in the heart by tantalum-lining graphite tube was developed. The tantalum-lining graphite tube can entirely eliminate effects of stable carbide formed. The sensitivity was enhanced to compare with the conventional graphite tube. At the same time, it also climinates memory effect completely and reduces the interferences of coexistent elements such as Fe, Na, K etc. The method is simple, accurate and rapid.
Collapse
Affiliation(s)
- S Mo
- Department of Chemistry, South China Normal University, 510631 Guangzhou
| | | | | |
Collapse
|
21
|
Mo S, Liu N, Jin J, Ding W, Ruan X, Qing H. [Influence of functional groups of huatanyuxin decoction on Ca2+ transmembrane influx in rat aorta]. Zhongguo Zhong Yao Za Zhi 1999; 24:232-3, 256. [PMID: 12205949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
OBJECTIVE To study the Ca2+ antagonistic effect of functional groups of Huatanyuxin decoction. METHOD The 45Ca transmembrane influx technique was used to measure the Ca2+ blocking effect of leak, receptor-operated Ca2+ channel (ROC) and potential-dependent Ca2+ channel (PDC) in rat aorta. RESULT ROC and PDC could be blocked when the complex prescription was used at concentrations of 0.5-5 mg/ml. Among the functional groups, Huoxue group (activating blood) and Xinqi group (promoting and normalizing flow of vital energy) showed better Ca2+ antagonistic effect. CONCLUSION The mechanism of therapeutic effect of Huatanyuxin decoction may be related to its Ca2+ blocking effect similar to verapamil.
Collapse
Affiliation(s)
- S Mo
- Institute of Nuclear Science and Technology, Sichuan Union University, Chengdu 610064
| | | | | | | | | | | |
Collapse
|
22
|
Tang Y, Mo S. [Study of the background absorption of ErCl3 and Er(NO3) matrices in GFAAS]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:72-74. [PMID: 15818922] [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: 05/24/2023]
Abstract
The investigation shows that the background absorption of Er matrices is significantly wavelength dependent. The effects of ashing temperature, heating mode, atomization temperature, recording time and matrix modifiers on the non-specific absorption of Er matrices have also been studied.
Collapse
Affiliation(s)
- Y Tang
- Department of Chemistry, South China Normal University, Guangzhou
| | | |
Collapse
|
23
|
Affiliation(s)
- W Wang
- Department of Medicine, University of Colorado Health Sciences Center, Denver, USA
| | | | | |
Collapse
|
24
|
Abstract
This paper presents an adaptive algorithm for preprocessing document images prior to binarization in character recognition problems. Our method is similar in its approach to the blind adaptive equalization of binary communication channels. The adaptive filter utilizes a quadratic system model to provide edge enhancement for input images that have been corrupted by noise and other types of distortions during the scanning process. Experimental results demonstrating significant improvement in the quality of the binarized images over both direct binarization and a previously available preprocessing technique are also included.
Collapse
Affiliation(s)
- S Mo
- Dept. of Electr. Eng., Utah Univ., Salt Lake City, UT 84112, USA
| | | |
Collapse
|
25
|
Luo D, Mo S. [A study on the treatment and restoration of the complete fractured teeth]. Hua Xi Kou Qiang Yi Xue Za Zhi 1997; 15:247-50. [PMID: 11480012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
In order to keep the fractured teeth with their important function of mastication the authors had adopted a kind of improved calvital preparation to carry out the pulp treatment for 56 cases, 63 teeth, together with periodontal washing, the application of medicine and the periodontal treatment of gingivectomy and flap operation, etc. from Jan. 1989 to Jan. 1993. The regularization of the filling of the fragmental area, the combination and the fixation of the split tooth were strengthened with spiral root post and dentin retaining nails, and then the full cast crown was restorated. The results were satisfied. It turns out that complete fracture of posterior teeth, thought to be pulled out in the past because they had split well below the gum, or even affected the pulp chamber floor, can be kept if given treatment and proper restoration.
Collapse
Affiliation(s)
- D Luo
- Stomatologic Hospital of Henan Province
| | | |
Collapse
|
26
|
Wang Y, Liu S, Mo S. [Management and prognosis of patients with locally recurrent soft tissue sarcomas]. Zhonghua Zhong Liu Za Zhi 1997; 19:231-4. [PMID: 10920906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
OBJECTIVE The results and prognositic factors in treating locally recurrent soft tissue sarcoma (STS) of the extremities and trunk were identified. METHODS The clinical, pathologic, and therapeutic characteristics of 96 STS patients were investigated using univariate and multivariate analyses. Seventy-six patients (79.2%) had high grade sarcoma and 20 patients (20.8%) had low grade sarcoma. Operative procedures were wide excision (surgical margin > or = 2 cm) in 66, local excision (surgical margin < 2 cm) in 6, and amputation in 24 patients. Adjuvant radiotherapy and chemotherapy was administered in 24 and 36 patients respectively. RESULTS After reoperation of the recurrent tumor, the 5-year local control and overall survival rates were 70.1% and 59.1%, respectively. High grade, large size, and tumor in the upper extremities were associated with decreased overall survival. CONCLUSION The authors emphasize that the initial management of primary STS should be adequate and suggest that safty margin of > or = 2 cm should be adhered to. In patients with local recurrence only, the overall survival may not be adversely affected if the recurrent lesion is properly treated. Investigations of more effective multimodality therapy needs to be done.
Collapse
Affiliation(s)
- Y Wang
- Cancer Hospital, Shanghai Medical University
| | | | | |
Collapse
|
27
|
Chi Y, Mo S, Mota de Freitas D. Na(+)-H+ and Na(+)-Li+ exchange are mediated by the same membrane transport protein in human red blood cells: an NMR investigation. Biochemistry 1996; 35:12433-42. [PMID: 8823178 DOI: 10.1021/bi960814l] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Na(+)-H+ exchange is a transport system present in erythrocytes which plays an important role in the regulation of intracellular pH, cellular volume, and transmembrane ion transport. Na(+)-Li+ exchange has received much attention and has been investigated in more detail than have any of the other ion transport systems, because of its high reproducibility. Both red blood cell (RBC) Na(+)-H+ and Na(+)-Li+ exchange are elevated in essential hypertensive patients relative to normotensive individuals. RBC Na(+)-Li+ exchange may be a mode of operation of Na(+)-H+ exchange. Amiloride and its analogue, 5-(N,N-hexamethylene)amiloride (HMA), are well-known inhibitors of Na(+)-H+ exchange, whereas phloretin strongly inhibits Na(+)-Li+ exchange. In this study, we tested the effects of amiloride, HMA, and phloretin on Na(+)-Li+ exchange activity in intact RBCs by using atomic absorption. We investigated by using 7Li nuclear magnetic resonance (NMR) spectroscopy the effects of HMA and phloretin inhibition on Li+ efflux across resealed H(+)- and Li(+)-loaded RBC ghosts in the absence and presence of pH gradients. Amiloride inhibitory activities on both Na+ and Li+ binding to exposed RBC membranes under different pH conditions were also studied by 23Na and 7Li NMR relaxation time measurements. We found that Na(+)-Li+ exchange activity was inhibited by amiloride, HMA, and phloretin in suspensions of intact RBCs and of resealed RBC ghosts. Li+ efflux rates across resealed H(+)- and Li(+)-loaded RBC ghosts were significantly lower when a pH gradient was present, presumably because of the competition between Li+ and H+ for transport by the same transport protein. Amiloride had similar inhibitory constants on both Na+ and Li+ binding to RBC membranes (1021 +/- 48 M-1 vs 964 +/- 40 M-1 at pH 8.0; 731 +/- 147 M-1 vs 716 +/- 27 M-1 at pH 7.0). These results suggest that Na(+)-H+ exchange and Na(+)-Li+ exchange are mediated by the same RBC membrane transport protein.
Collapse
Affiliation(s)
- Y Chi
- Department of Chemistry, Loyola University of Chicago, Illinois 60626, USA
| | | | | |
Collapse
|
28
|
de Freitas D, Mo S, Chi Y. Na+-H+ exchange across human erythrocyte membranes as probed by multinuclear magnetic resonance spectroscopy. J Inorg Biochem 1993. [DOI: 10.1016/0162-0134(93)85594-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
29
|
Mota de Freitas D, Rong Q, Mo S. Reinvestigation of the transmembrane difference in 7Li NMR T1 values in Li(+)-loaded human erythrocyte suspensions. Magn Reson Med 1993; 29:256-9. [PMID: 8429792 DOI: 10.1002/mrm.1910290216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In contrast to the findings in a recent study (R. P. Gullapalli, R. M. Hawk, R. A. Komoroski, Magn. Reson. Med. 20, 240 (1991)), we found that, even at high hematocrits, the T1 values for extracellular 7Li were at least three times longer than those for intracellular Li+. We conclude that a transmembrane difference in T1 values can be used for separate observation of intracellular and extracellular Li+ in human red blood cell suspensions.
Collapse
Affiliation(s)
- D Mota de Freitas
- Department of Chemistry, Loyola University of Chicago, Illinois 60626
| | | | | |
Collapse
|
30
|
de Freitas D, Abraha A, Rong Q, Mo S, Wittenkeller L. Elucidation of transport mechanisms for alkali cations in human RBC by metal NMR. J Inorg Biochem 1991. [DOI: 10.1016/0162-0134(91)84371-f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
31
|
Abstract
Using a fluorometric assay based on the activation of human plasminogen, plasminogen activator (PA) activity was measured in cytosolic and lysosomal extracts prepared from normal, benign hyperplastic (BPH), and carcinomatous human prostates. In all three types of prostatic tissue, the lysosomal extracts had much higher concentrations of PA activity than did the cytosolic extracts. The mean PA activity in lysosomal extracts of the carcinomatous prostates was 170% and 85% higher than that measured in normal and BPH prostates, respectively (Student's t-test, p less than .05). With prostatic carcinoma and BPH specimens there was an inverse (negative) relationship between lysosomal PA activity and the nuclear concentration of androgen-receptors (correlation coefficient, -0.84). By comparison in specimens of human breast tumors, there were weakly positive correlations between PA activity and either estrogen (ER) or progestin (PR) receptors (correlation coefficients of + 0.23 and + 0.54, respectively). While as a group ER+, PR+ breast tumors had higher PA activity that ER+, PR- or ER-, PR- tumors, the differences were not statistically significant (Student's t-test, p greater than .05). Thus in breast tumors, it is uncertain whether high levels of PA activity are indicative of hormonal dependence. However, our findings with prostatic tumors infer that in contrast, high concentrations of this enzyme may reflect a malignant phenotype characterized by a decrease in both androgen responsiveness and differentiation.
Collapse
|
32
|
Abstract
Using a fluorometric assay, nonspecific proteolytic activity and plasminogen activator were measured in transplantable tumors of the dorsal prostate of Nb rats. Nonspecific proteolytic activity in prostatic tumors did not differ significantly from that measured in normal dorsal prostate, whereas plasminogen activator activity, undetectable in the latter tissue, was readily measurable in the tumors. Furthermore, plasminogen activator activity in prostatic tumors characterized by hormone-insensitive growth was 8-fold higher than in tumors characterized by androgen-stimulated growth. In both typess of tumors, the plasminogen activator activity per mg protein was highest in the lysosomal fractions. The results indicate that plasminogen activator may be a useful marker for discriminating between androgen-stimulated and autonomous prostatic tumors.
Collapse
|
33
|
Rennie PS, Bruchovsky N, Noble RL, Mo S. Nuclear binding of androgens and acid phosphatase activity in prostatic tumors of Nb rats. Biochim Biophys Acta 1980; 632:428-36. [PMID: 7417531 DOI: 10.1016/0304-4165(80)90238-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A transplantable prostatic adenocarcinoma derived from the dorsal lobe of the prostate gland of an Nb rat was analyzed for the concentration of nuclear androgen-binding sites and the presence of acid phosphatase activity. When extracts of nuclei from normal prostatic tissue were labelled with [1,2-3H]dihydrotestosterone in the absence and presence of competitor, two types of specific binding were observed: type 1 was characterized by an association constant (Ka) of 6 x 10(7) M-1 and involved a molecule that was excluded from Sephadex G-200; type 2 was characterized by a Ka of 3 x 10(8) M-1 and depended on a binding component that was retained by Sephadex G-200. Nuclei from androgen-stimulated tumors contained reduced concentrations of both androgen-binding components, whereas nuclei from autonomous tumors had only a trace amount of type 1 sites and were entirely devoid of type 2 sites. In all tumors the acid phosphatase activity per mg of protein was markedly elevated. Relative to normal, the activity of this enzyme was 140% and 350% higher in androgen-stimulated and autonomous tumors, respectively. These findings indicate that prostatic tumors are characterized by a decrease in nuclear androgen-binding, and an increase in specific activity of acid phosphatase, and also that such changes are more pronounced in autonomous than in androgen-stimulated tumors.
Collapse
|