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Yun B, Oh J, Park H, Chung J, Sim J, Lee J, Kim Y, Yoon JH. Impact of early economic activity loss on all-cause mortality in gastric cancer survivors following curative treatment: a nationwide study in Korea. Gastric Cancer 2024; 27:1159-1168. [PMID: 39133396 DOI: 10.1007/s10120-024-01541-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 12/26/2023] [Indexed: 08/13/2024]
Abstract
BACKGROUND The impact of economic engagement on the health of cancer survivors is notable. Our study aims to explore the association between early loss of economic activity (EA) and the risk of all-cause mortality among gastric cancer survivors. METHODS This retrospective cohort study utilized data from Korea's National Health Insurance Service, focusing on 30-59-year-old gastric cancer patients who received either surgery or endoscopic procedures from January 2009 to December 2013. The primary outcome measure was all-cause mortality. Early loss of EA was identified when a patient's insurance status shifted to dependent within one year following treatment. Adjusted hazard ratios (HRs) and 95% confidence intervals (CI) for all-cause mortality were estimated using multivariable Cox proportional hazards models, conducting separate analyses for surgical and endoscopic groups. RESULTS Among 24,159 patients (median follow-up, 9.9 years), 2976 (12.3%) experienced all-cause mortality. Specifically, 2835 of these deaths occurred in patients who underwent surgery, while 141 were in the endoscopic procedure group. Early loss of EA was recorded in 14.4% of the surgery group and 7.7% of the endoscopic procedure group. Adjusted HRs (95% CI) for all-cause mortality associated with early loss of EA were 1.39 (1.27-1.54) for the surgery group and 2.27 (1.46-3.52) for the endoscopic procedure group. CONCLUSIONS This study highlights a significant association between the early loss of EA and an increased risk of all-cause mortality in those who have undergone curative treatments for gastric cancer. It underscores the crucial role of sustaining EA in enhancing the health outcomes of these survivors.
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Affiliation(s)
- Byungyoon Yun
- Department of Preventive Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seoul, Seodaemun-gu, 03722, Republic of Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Juyeon Oh
- Department of Public Health, Graduate School, Yonsei University, Seoul, Republic of Korea
| | - Heejoo Park
- Department of Public Health, Graduate School, Yonsei University, Seoul, Republic of Korea
| | - Jinsoo Chung
- Department of Urology, National Cancer Center, Goyang, Republic of Korea
| | - Juho Sim
- Department of Public Health, Graduate School, Yonsei University, Seoul, Republic of Korea
| | - Jongmin Lee
- Department of Public Health, Graduate School, Yonsei University, Seoul, Republic of Korea
| | - Yangwook Kim
- Department of Public Health, Graduate School, Yonsei University, Seoul, Republic of Korea
| | - Jin-Ha Yoon
- Department of Preventive Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seoul, Seodaemun-gu, 03722, Republic of Korea.
- The Institute for Occupational Health, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Bravata D, Liu H, Colosimo MM, Bullock AC, Commons E, Pimentel M. Digital disease management programme reduces chronic gastrointestinal symptoms among racially and socially vulnerable populations. BMJ Open Gastroenterol 2024; 11:e001463. [PMID: 39209334 PMCID: PMC11367377 DOI: 10.1136/bmjgast-2024-001463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Accepted: 08/15/2024] [Indexed: 09/04/2024] Open
Abstract
OBJECTIVE Considerable disparities exist in access to gastrointestinal (GI) care and digestive outcomes across gender, racial, and socioeconomic groups. We evaluated (1) whether adults with chronic GI symptoms from diverse demographic groups would use a digital digestive care programme and (2) the effects of participation on GI symptom severity and other patient-reported outcomes. METHODS Access to a digital digestive chronic care programme was provided to participants regardless of prior digestive diagnoses or symptoms for 90 days. The intervention included GI symptom tracking, personalised medical nutrition therapy, GI-specific health coaching, and targeted education on common GI symptoms. We assigned a Social Vulnerability Index (SVI) score to each participant according to their home address and compared baseline and end-intervention symptoms and other patient-reported outcomes by gender, race/ethnicity, and SVI. RESULTS Of the 1936 participants, mean age was 43.1 years; 67% identified as white/Caucasian, 11% Asian/Pacific Islander, 6% Hispanic/Latinx, 7% black/African American, and 7% of multiple races. Participants of all demographic groups used the app symptom logging, reviewed educational materials, and interacted with their care team and reported similar statistically significant improvements in GI symptoms (by the end of the intervention, 85% improved, p<0.05). Participants reported feeling greater control of their health (83%), better able to manage their digestive symptoms (83%), increased happiness (76%), and greater productivity at work (54%), with black/African Americans and Native Americans most likely to report these changes. CONCLUSION We conclude that a digital GI disease management programme may be of value in reducing disparities in access to GI care.
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Affiliation(s)
| | - Hau Liu
- Cylinder, Chicago, Illinois, USA
- Grossman School of Medicine, NYU, New York, New York, USA
| | | | | | | | - Mark Pimentel
- Cedars-Sinai Medical Center, Los Angeles, California, USA
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Osei Baah F, Sharda S, Davidow K, Jackson S, Kernizan D, Jacobs JA, Baumer Y, Schultz CL, Baker-Smith CM, Powell-Wiley TM. Social Determinants of Health in Cardio-Oncology: Multi-Level Strategies to Overcome Disparities in Care: JACC: CardioOncology State-of-the-Art Review. JACC CardioOncol 2024; 6:331-346. [PMID: 38983377 PMCID: PMC11229550 DOI: 10.1016/j.jaccao.2024.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/20/2024] [Accepted: 02/27/2024] [Indexed: 07/11/2024] Open
Abstract
Addressing the need for more equitable cardio-oncology care requires attention to existing disparities in cardio-oncologic disease prevention and outcomes. This is particularly important among those affected by adverse social determinants of health (SDOH). The intricate relationship of SDOH, cancer diagnosis, and outcomes from cardiotoxicities associated with oncologic therapies is influenced by sociopolitical, economic, and cultural factors. Furthermore, mechanisms in cell signaling and epigenetic effects on gene expression link adverse SDOH to cancer and the CVD-related complications of oncologic therapies. To mitigate these disparities, a multifaceted strategy is needed that includes attention to health care access, policy, and community engagement for improved disease screening and management. Interdisciplinary teams must also promote cultural humility and competency and leverage new health technology to foster collaboration in addressing the impact of adverse SDOH in cardio-oncologic outcomes.
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Affiliation(s)
- Foster Osei Baah
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, Georgia, USA
| | - Sonal Sharda
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Kimberly Davidow
- Lisa Dean Moseley Foundation Institute for Cancer and Blood Disorders, Nemours Children's Hospital, Delaware, Wilmington, Delaware, USA
| | - Sadhana Jackson
- Pediatric Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
- Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
| | - Daphney Kernizan
- Preventive Cardiology Program, Cardiac Center, Nemours Children's Health, Panama City, Florida, USA
- College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Joshua A Jacobs
- Department of Population Health Sciences, Spencer Fox Eccles School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Yvonne Baumer
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Corinna L Schultz
- Lisa Dean Moseley Foundation Institute for Cancer and Blood Disorders, Nemours Children's Hospital, Delaware, Wilmington, Delaware, USA
| | - Carissa M Baker-Smith
- Preventive Cardiology Program, Cardiac Center, Nemours Children's Health, Wilmington, Delaware, USA
| | - Tiffany M Powell-Wiley
- Social Determinants of Obesity and Cardiovascular Risk Laboratory, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
- Intramural Research Program, National Institute on Minority Health Disparities, National Institutes of Health, Bethesda, Maryland, USA
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Fan X, He W, Zhang Q, Zhang B, Dong L, Li L, Liu X. Evaluation and Prediction Analysis of 3- and 5-Year Relative Survival Rates of Patients with Cervical Cancer: A Model-Based Period Analysis. Cancer Control 2024; 31:10732748241232324. [PMID: 38408865 PMCID: PMC10898299 DOI: 10.1177/10732748241232324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 11/21/2023] [Accepted: 01/19/2024] [Indexed: 02/28/2024] Open
Abstract
BACKGROUND Cervical cancer remains a threat to female health due to high mortality. Clarification of the long-term trend of survival rate over time and the associated risk factors would be greatly informative to improve the prognosis of cervical cancer patients. METHODS This retrospective study was based on data extracted from the Surveillance, Epidemiology, and End Results (SEER) database of the United States. The 3-year and 5-year overall survival rates of patients with cervical cancer during 2002-2006, 2007-2011, and 2012-2016 were analyzed. Period analysis was used to assess the variation in survival rate stratified by age, race, and socioeconomic status during the 15-year study period and then predicted the relative survival rate in the following period from 2017 to 2021. RESULTS During 2002-2016, the 3-year relative survival rate of cervical cancer patients increased from 73.1% to 73.5% with a high jump between 2007 and 2011. This upward trend is expected to continue to 74.3% between 2017 and 2021. Patients older than 60 years, black ethnicity, or medium and high poverty status were likely to have a lower relative survival rate. CONCLUSION This study confirmed the increased relative survival rate of cervical cancer patients over years and identified relevant risk factors. Targeted initiatives for elderly and socially underprivileged individuals may be able to mitigate inequality.
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Affiliation(s)
- Xiaodong Fan
- School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Wei He
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China
| | - Qing Zhang
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China
| | - Binjie Zhang
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
| | - Li Dong
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China
| | - Li Li
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangdong, China
| | - Xiaochun Liu
- School of Public Health, Shanxi Medical University, Taiyuan, China
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
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Li Y, Feng A, Zheng S, Chen C, Lyu J. Recent Estimates and Predictions of 5-Year Survival in Patients with Gastric Cancer: A Model-Based Period Analysis. Cancer Control 2022; 29:10732748221099227. [PMID: 35499497 PMCID: PMC9067041 DOI: 10.1177/10732748221099227] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The overall incidence and mortality of gastric cancer have steadily declined in the United States over the past few decades, but it is still a serious disease burden for patients. Therefore, it is of great significance to evaluate the latest survival rate of gastric cancer. METHODS Based on the Surveillance, Epidemiology, and End Results database, this study analyzed the age-standardized relative survival rates and survival trends of gastric cancer cases in 2007-2011 and 2012-2016 using period analysis, and the survival rate 2017-2021 was predicted using a generalized linear model based on the period analysis. RESULTS During 2007-2016, the 5-year relative survival rate of patients with gastric cancer continued to rise, and the same trend was observed in 2017-2021. The 5-year overall age-standardized relative survival rates in 2007-2011, 2012-2016, and 2017-2021 were 38.3%, 40.6%, and 42.9%, respectively. However, despite these favorable trends, the overall relative survival of patients with gastric cancer remains at a low level. There were significant differences in the relative survival rates of patients with gastric cancer in terms of age, sex, race, primary site, stage, and socioeconomic status. Notably, the survival rate of patients with distant-stage gastric cancer remains very low (10%). CONCLUSION We found that the survival rate of patients with gastric cancer showed different degrees of improvement in each subgroup. However, the overall relative survival rate of patients with gastric cancer remains low. Analyzing the changes of patients with gastric cancer in the last 10 years will be helpful in predicting the changing trend of cancer in the future. It also provides a scientific basis for relevant departments to formulate effective tumor prevention and control measures.
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Affiliation(s)
- Yunmei Li
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, China.,School of Basic Medicine and Public Health, Jinan University, Guangzhou, China
| | - Aozi Feng
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Shuai Zheng
- School of Public Health, 107652Shannxi University of Chinese Medicine, Xianyang, China
| | - Chong Chen
- School of Public Health, 107652Shannxi University of Chinese Medicine, Xianyang, China
| | - Jun Lyu
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, China
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Yang X, Zhang T, Zhang H, Sang S, Chen H, Zuo X. Temporal trend of gastric cancer burden along with its risk factors in China from 1990 to 2019, and projections until 2030: comparison with Japan, South Korea, and Mongolia. Biomark Res 2021; 9:84. [PMID: 34784961 PMCID: PMC8597246 DOI: 10.1186/s40364-021-00340-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 12/25/2022] Open
Abstract
Background Identifying and projecting the epidemiological burden of gastric cancer (GC) can optimize the control strategies, especially in high-burden areas. Methods We collected incidence, deaths, disability-adjusted life-years (DALYs), age-standardized incidence rate (ASIR), age-standardized mortality rate (ASMR), age-standardized DALY rate (ASDR) of GC from 1990 to 2019 in China, Japan, South Korea, and Mongolia from the Global Burden of Disease Study 2019. The average annual percentage change (AAPC) was calculated to quantify the temporal trends, and the projection was estimated by applying the Bayesian age-period-cohort model. Results In China, the ASIR of GC declined slightly from 37.56/100000 in 1990 to 30.64/100000 in 2019 (AAPC of − 0.41), while the declines of ASMR and ASDR were pronounced (AAPC of − 1.68 and − 1.98, respectively), which were weaker than Japan and South Korea. Although the age-standardized rates of gastric cancer in most countries have declined overall in the past 30 years, the downward trend in the last 4 years has become flattened. Smoking remained one main contributor to DALYs of GC in China, Japan, South Korea, and Mongolia, with more than 24%. The contribution from high-sodium diet was similar between men and women, and kept relatively stable over the three decades. The predicted ASMRs among the four East Asian countries continued to decline until 2030, but the absolute deaths would still increase significantly, especially in South Korea and Mongolia. Conclusions Although the age-standardized rates of GC in most countries have declined, the absolute burden of GC in the world, especially in China and Mongolia, is on the rise gradually. Low socio-demographic index and aging along with Helicobacter pylori infection, smoking, and high-salt diet were the main risk factors of GC occurrence and should be paid more attention. Supplementary Information The online version contains supplementary material available at 10.1186/s40364-021-00340-6.
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Affiliation(s)
- Xiaorong Yang
- Department of Gastroenterology, Qilu Hospital, School of Medicine, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, China. .,Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, China. .,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, China.
| | - Tongchao Zhang
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, China
| | - Hong Zhang
- Department of Gastroenterology, Qilu Hospital, School of Medicine, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, China.,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, China
| | - Shaowei Sang
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, China
| | - Hui Chen
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, China
| | - Xiuli Zuo
- Department of Gastroenterology, Qilu Hospital, School of Medicine, Cheeloo College of Medicine, Shandong University, 107 Wenhuaxi Road, Jinan, 250012, Shandong, China. .,Laboratory of Translational Gastroenterology, Qilu Hospital of Shandong University, Jinan, China.
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Lansdorp-Vogelaar I, Meester RGS, Laszkowska M, Escudero FA, Ward ZJ, Yeh JM. Cost-effectiveness of prevention and early detection of gastric cancer in Western countries. Best Pract Res Clin Gastroenterol 2021; 50-51:101735. [PMID: 33975689 DOI: 10.1016/j.bpg.2021.101735] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/15/2021] [Accepted: 02/19/2021] [Indexed: 02/08/2023]
Abstract
Gastric cancer (GC) is a significant global health problem, with Helicobacter pylori infection estimated to be responsible for 89% of non-cardiac GC cases, or 78% of all GC cases. The International Agency for Research on Cancer has called for Helicobacter pylori test-and-treat strategies in countries with high rates of GC. However, for countries with low rates of GC, such as most Western countries, the balance between benefits, harms and costs of screening is less clear-cut. GC is a disease with a well-characterized precancerous process, providing the basis for primary and secondary prevention efforts. However, rigorous data assessing the impact of such interventions in Western countries are lacking. In the absence of clinical trials, modelling offers a unique approach to evaluate the potential impact of various screening and surveillance interventions. In this paper, we provide an overview of modelling studies evaluating the cost-effectiveness of GC screening and surveillance in Western countries.
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Affiliation(s)
- Iris Lansdorp-Vogelaar
- Department of Public Health, Erasmus MC University Medical Center Rotterdam, the Netherlands.
| | - Reinier G S Meester
- Department of Public Health, Erasmus MC University Medical Center Rotterdam, the Netherlands.
| | - Monika Laszkowska
- Gastroenterology, Hepatology, and Nutrition Service, Memorial-Sloan Kettering Cancer Research Center New York, NY, USA.
| | | | - Zachary J Ward
- Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - Jennifer M Yeh
- Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
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Urban-Rural Disparities and Temporal Trends in Peptic Ulcer Disease Epidemiology, Treatment, and Outcomes in the United States. Am J Gastroenterol 2021; 116:296-305. [PMID: 33105195 DOI: 10.14309/ajg.0000000000000997] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/16/2020] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The incidence of peptic ulcer disease (PUD) has been decreasing over time with Helicobacter pylori eradication and use of acid-suppressing therapies. However, PUD remains a common cause of hospitalization in the United States. We aimed to evaluate contemporary national trends in the incidence, treatment patterns, and outcomes for PUD-related hospitalizations and compare care delivery by hospital rurality. METHODS Data from the National Inpatient Sample were used to estimate weighted annual rates of PUD-related hospitalizations. Temporal trends were evaluated by joinpoint regression and expressed as annual percent change with 95% confidence intervals (CIs). We determined the proportion of hospitalizations requiring endoscopic and surgical interventions, stratified by clinical presentation and rurality. Multivariable logistic regression was used to assess independent predictors of in-hospital mortality and postoperative morbidity. RESULTS There was a 25.8% reduction (P < 0.001) in PUD-related hospitalizations from 2005 to 2014, although the rate of decline decreased from -7.2% per year (95% CI: 13.2% to -0.7%) before 2008 to -2.1% per year (95% CI: 3.0% to -1.1%) after 2008. In-hospital mortality was 2.4% (95% CI: 2.4%-2.5%). Upper endoscopy (84.3% vs 78.4%, P < 0.001) and endoscopic hemostasis (26.1% vs 16.8%, P < 0.001) were more likely to be performed in urban hospitals, whereas surgery was performed less frequently (9.7% vs 10.5%, P < 0.001). In multivariable logistic regression, patients managed in urban hospitals were at higher risk for postoperative morbidity (odds ratio 1.16 [95% CI: 1.04-1.29]), but not death (odds ratio 1.11 [95% CI: 1.00-1.23]). DISCUSSION The rate of decline in hospitalization rates for PUD has stabilized over time, although there remains significant heterogeneity in treatment patterns by hospital rurality.
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Praja2 suppresses the growth of gastric cancer by ubiquitylation of KSR1 and inhibiting MEK-ERK signal pathways. Aging (Albany NY) 2021; 13:3886-3897. [PMID: 33461174 PMCID: PMC7906149 DOI: 10.18632/aging.202356] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 09/29/2020] [Indexed: 12/13/2022]
Abstract
Gastric cancer (GC) is a common malignant tumor, which has a high incidence and fatality. Therefore, it is important to clarify the molecular mechanism of the occurrence and development for GC and to find more effective treatments and targeted drugs. In this study, we found that the kinase suppressor of Ras1 (KSR1) was increased in GC tissues and cell lines. Silencing of KSR1 inhibited the proliferation, migration and invasion of MKN-45 cells. E3 ligase Praja2 was downregulated in GC tissues and cell lines. In addition, praja2 promoted ubiquitylation of KSR1, but inhibited MEK-ERK signal pathways. Functional analysis indicated overexpression of praja2 inhibited the proliferation, migration and invasion of MKN-45 cells, while MG132 or FGF2 treatment removed the inhibitory effects of praja2 on GC progression. In vivo tumorigenesis experiments indicated praja2 inhibited tumor growth via KSR1-MEK-ERK axis. In conclusion, praja2 promoted the ubiquitylation and degradation of KSR1, which disturbed MEK- ERK signaling and inhibited GC progression. Our study might provide a novel target for GC clinical treatment.
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