The Roles of PI3K/AKT/mTOR and MAPK/ERK Signaling Pathways in Human Pheochromocytomas.

Abstract:

:Objectives. The roles of PI3K/AKT/mTOR and MAPK/ERK pathways involved in the pathogenesis of pheochromocytoma and paraganglioma (PPGL) were demonstrated mostly by in vitro studies with rat or mouse cells and were mainly studied at transcriptional level. This study aimed to investigate the effect of these pathways on the proliferation of human PPGL cells and the activation of these pathways in PPGLs. Methods. Human PPGL cells were treated with sunitinib and inhibitors of PI3K (LY294002), MEK1/2 (U0126), and mTORC1/2 (AZD8055). Cell proliferation was detected by MTT assay. Protein phosphorylation was detected by Western blotting. Results. In most PPGLs, AKT, ERK1/2, and mTOR were activated. LY294002 (10 μM), U0126 (10 μM), AZD8055 (1 μM), and sunitinib (1 μM) inhibited PPGL cell proliferation in ten primary cultures of tissues, including four from patients with gene mutations. MEK1/2 inhibitor decreased mTOR phosphorylation. Inhibition of mTOR reduced phosphorylation of AKT and ERK1/2. Sunitinib inhibited phospho-ERK1/2 and phospho-mTOR. Conclusion. Our study suggested that PI3K/AKT/mTOR and MAPK/ERK signaling pathways play vital roles in human PPGL and are activated in most PPGLs. Inhibiting multiple pathways might be a novel therapeutic approach for PPGLs.

journal_name

Int J Endocrinol

authors

Du J,Tong A,Wang F,Cui Y,Li C,Zhang Y,Yan Z

doi

10.1155/2016/5286972

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

5286972

eissn

1687-8337

issn

1687-8345

journal_volume

2016

pub_type

杂志文章
  • Increased Circulating Chemerin in Relation to Chronic Microvascular Complications in Patients with Type 2 Diabetes.

    abstract:Objective:Type 2 diabetes (T2DM) is a global epidemic and increases mortality due to its vascular complications. Chemerin has been found to exert a major role in glucose and lipid metabolism. The aim of this study was to explore the correlation between plasma chemerin levels and microangiopathy in patients with T2DM. ...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2019/8693516

    authors: Gu P,Wang W,Yao Y,Xu Y,Wang L,Zang P,Ma J,Yang C,Liang J,Lu B,Shao J

    更新日期:2019-07-16 00:00:00

  • Evidence of Insulin Resistance and Other Metabolic Alterations in Boys with Duchenne or Becker Muscular Dystrophy.

    abstract::Aim. Our aim was (1) to determine the frequency of insulin resistance (IR) in patients with Duchenne/Becker muscular dystrophy (DMD/BMD), (2) to identify deleted exons of DMD gene associated with obesity and IR, and (3) to explore some likely molecular mechanisms leading to IR. Materials and Methods. In 66 patients wi...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2015/867273

    authors: Rodríguez-Cruz M,Sanchez R,Escobar RE,Cruz-Guzmán Odel R,López-Alarcón M,Bernabe García M,Coral-Vázquez R,Matute G,Velázquez Wong AC

    更新日期:2015-01-01 00:00:00

  • Insulin Increases Sestrin 2 Content by Reducing Its Degradation through the PI 3 K/mTOR Signaling Pathway.

    abstract::Sestrin (SESN) is known as a cysteine sulfinic acid reductase. Recently, nonredox functions of SESN in metabolic regulation and antitumor property have been recognized. While mechanisms underlying the expression of SESN are not fully understood. Here we report that insulin markedly increased SESN2 level in HepG2 cells...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2015/505849

    authors: Chai D,Wang G,Zhou Z,Yang H,Yu Z

    更新日期:2015-01-01 00:00:00

  • Benign Aspirates on Follow-Up FNA May Be Enough in Patients with Initial Atypia of Undetermined Significance/Follicular Lesion of Undetermined Significance.

    abstract::Background. Management of thyroid nodules with benign aspirates following atypia of undetermined significance/follicular lesion of undetermined significance (AUS/FLUS) is not well established. We reviewed the risk of malignancy and the role of ultrasound (US) features among thyroid nodules with benign results followin...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2014/354612

    authors: Kim GR,Yoon JH,Kim EK,Moon HJ,Kwak JY

    更新日期:2014-01-01 00:00:00

  • Response to Radioiodine Therapy for Thyrotoxicosis: Disparate Outcomes for an Indigenous Population.

    abstract::Despite 70 years of experience treating thyrotoxic patients with radioiodine not all patients are successfully treated by a single dose. Multiple factors predicting radioiodine efficacy have been reported. The aim of this study was to assess whether ethnicity was associated with radioiodine response. A retrospective r...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2016/7863867

    authors: Tamatea JA,Conaglen JV,Elston MS

    更新日期:2016-01-01 00:00:00

  • Vitamin D Status Is Negatively Correlated with Insulin Resistance in Chinese Type 2 Diabetes.

    abstract::Objectives. Vitamin D deficiency plays a role in insulin resistance and the pathogenesis of type 2 diabetes mellitus. Little information is available about the association between vitamin D status and insulin resistance in the Chinese population. Currently, vitamin D status is evaluated by the concentrations of serum ...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2016/1794894

    authors: Zhang J,Ye J,Guo G,Lan Z,Li X,Pan Z,Rao X,Zheng Z,Luo F,Lin L,Lin Z,Xue Y

    更新日期:2016-01-01 00:00:00

  • Vitamin d status in central europe.

    abstract::Little published information is available regarding epidemiological data on vitamin D status in the large geographical region of Central Europe (CE). We searched the journal literature with regard to 25(OH)D concentrations among community-dwelling or healthy people living in CE. 25(OH)D concentrations varied by age, s...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章,评审

    doi:10.1155/2014/589587

    authors: Pludowski P,Grant WB,Bhattoa HP,Bayer M,Povoroznyuk V,Rudenka E,Ramanau H,Varbiro S,Rudenka A,Karczmarewicz E,Lorenc R,Czech-Kowalska J,Konstantynowicz J

    更新日期:2014-01-01 00:00:00

  • Circulating MicroRNAs as Biomarkers of Gestational Diabetes Mellitus: Updates and Perspectives.

    abstract::Gestational diabetes mellitus (GDM) is defined as any degree of carbohydrate intolerance, with onset or first recognition during second or third trimester of gestation. It is estimated that approximately 7% of all pregnancies are complicated by GDM and that its prevalence is rising all over the world. Thus, the screen...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章,评审

    doi:10.1155/2018/6380463

    authors: Guarino E,Delli Poggi C,Grieco GE,Cenci V,Ceccarelli E,Crisci I,Sebastiani G,Dotta F

    更新日期:2018-04-12 00:00:00

  • Contributions of Fasting and Postprandial Glucose Concentrations to Haemoglobin A1c in Drug-Naïve Mal-Glucose Metabolism in Chinese Population Using Continuous Glucose Monitoring System.

    abstract:Aim:To clarify the contributions of fasting glucose (FG) and postprandial glucose (PG) to HbA1c in drug-naïve patients with type 2 diabetes (T2D) and impaired glucose tolerate (IGT)/impaired fasting glucose (IFG). Methods:Continuous glucose monitoring (CGM) was performed in 305 drug-naïve Chinese patients with T2D or ...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2019/1267475

    authors: Yan R,Hu Y,Li F,Jiang L,Xu X,Wang J,Zhang Y,Ye L,Lee KO,Su X,Ma J

    更新日期:2019-12-01 00:00:00

  • Causes and Metabolic Consequences of Gynecomastia in Adult Patients.

    abstract:Background:Gynecomastia (GM) is a benign enlargement of male breast due to glandular tissue proliferation. GM is a symptom of systemic or local hormonal disturbances, which could be associated with functional changes or pathological conditions. However, the long-lasting steroid imbalance in men with GM might exert nega...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2019/6718761

    authors: Robeva R,Elenkova A,Zacharieva S

    更新日期:2019-10-03 00:00:00

  • Evidences of Polymorphism Associated with Circadian System and Risk of Pathologies: A Review of the Literature.

    abstract::The circadian system is a supraphysiological system that modulates different biological functions such as metabolism, sleep-wake, cellular proliferation, and body temperature. Different chronodisruptors have been identified, such as shift work, feeding time, long days, and stress. The environmental changes and our mod...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章,评审

    doi:10.1155/2016/2746909

    authors: Valenzuela FJ,Vera J,Venegas C,Muñoz S,Oyarce S,Muñoz K,Lagunas C

    更新日期:2016-01-01 00:00:00

  • A cell model for conditional profiling of androgen-receptor-interacting proteins.

    abstract::Partial androgen insensitivity syndrome (PAIS) is associated with impaired male genital development and can be transmitted through mutations in the androgen receptor (AR). The aim of this study is to develop a cell model suitable for studying the impact AR mutations might have on AR interacting proteins. For this purp...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2012/381824

    authors: Mooslehner KA,Davies JD,Hughes IA

    更新日期:2012-01-01 00:00:00

  • Comparison of Exenatide and Metformin Monotherapy in Overweight/Obese Patients with Newly Diagnosed Type 2 Diabetes.

    abstract:Aims:The present study assessed the therapeutic effect of exenatide and metformin as the initial therapy on overweight/obese patients with newly diagnosed type 2 diabetes (T2D). Methods:The prospective, nonrandomized, interventional study enrolled a total of 230 overweight or obese patients with newly diagnosed T2D wh...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2017/9401606

    authors: Liu J,Hu Y,Xu Y,Jia Y,Miao L,Wang G

    更新日期:2017-01-01 00:00:00

  • Diagnostic and Management Pathways for Pulmonary Carcinoid Tumours in the United Kingdom: Results from the National Lung Neuroendocrine Tumour Pathway Project.

    abstract::There is inconsistency among published guidelines for the optimal diagnostic and management pathways for patients with typical (TC) or atypical (AC) pulmonary carcinoid tumours. We conducted a UK-wide clinician survey to assess current practice for the diagnosis, management, and follow-up of patients with TC/AC and de...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2020/9287536

    authors: Mansoor W,Ferguson S,Ross V,Talbot D

    更新日期:2020-02-28 00:00:00

  • Pretransplant HbA1c Is a Useful Predictor for the Development of New-Onset Diabetes in Renal Transplant Recipients Receiving No or Low-Dose Erythropoietin.

    abstract::Aims. To evaluate the predictive power of pretransplant HbA1c for new-onset diabetes after transplantation (NODAT) in kidney transplant candidates, who had several predispositions for fluctuated HbA1c levels. Methods. We performed a retrospective study of 119 patients without diabetes who received kidney transplantati...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2014/436725

    authors: Tokodai K,Amada N,Haga I,Nakamura A,Kashiwadate T,Kawagishi N,Ohuchi N

    更新日期:2014-01-01 00:00:00

  • Malignancy Risk and Related Factors of Atypia of Undetermined Significance/Follicular Lesion of Undetermined Significance in Thyroid Fine Needle Aspiration.

    abstract::Atypia of undetermined significance/follicular lesion of undetermined significance (AUS/FLUS) in thyroid fine needle aspiration (FNA) is a challenging category. The malignancy risk is different by multiple factors and subsequent management strategy is inconclusive. Therefore, we analyzed the malignancy risk of AUS/FLU...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2018/4521984

    authors: Hong SH,Lee H,Cho MS,Lee JE,Sung YA,Hong YS

    更新日期:2018-07-30 00:00:00

  • Elevated Squamous Cell Carcinoma Antigen, Cytokeratin 19 Fragment, and Carcinoembryonic Antigen Levels in Diabetic Nephropathy.

    abstract:OBJECTIVE:We aimed to explore whether squamous cell carcinoma antigen (SCC), cytokeratin 19 fragment (Cyfra21-1), neuron-specific enolase (NSE), and carcinoembryonic antigen (CEA) are elevated in diabetic nephropathy (DN) and the association between urinary albumin-to-creatinine ratio (UACR) and tumor markers in diabet...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2017/5304391

    authors: Chen J,Tao F,Zhang B,Chen Q,Qiu Y,Luo Q,Gen Y,Meng J,Zhang J,Lu H

    更新日期:2017-01-01 00:00:00

  • Associations of Sun Exposure with 25-Hydroxyvitamin D and Parathyroid Hormone Levels in a Cohort of Hypertensive Patients: The Graz Endocrine Causes of Hypertension (GECOH) Study.

    abstract::Sunlight-induced vitamin D, synthesis in the skin is the major source of vitamin D, but data on the relationship of sun-related behaviour with vitamin D and parathyroid hormone (PTH) levels are relatively sparse. We evaluated whether habitual sun exposure is associated with 25-hydroxyvitamin D (25[OH]D) and PTH levels...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2012/732636

    authors: Pilz S,Kienreich K,Stückler D,Meinitzer A,Tomaschitz A

    更新日期:2012-01-01 00:00:00

  • Saliva and Blood Asprosin Hormone Concentration Associated with Obesity.

    abstract:Background:The aim was to investigate the amounts of saliva and serum asprosin in order to determine whether it is related to obesity and whether salivary glands synthesize asprosin or not. Methods:A total of 116 underweight, normal weight, overweight, and obese (class I, class II, and class III) volunteers participat...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2019/2521096

    authors: Ugur K,Aydin S

    更新日期:2019-03-27 00:00:00

  • Gut Microbiota Composition and Structure of the Ob/Ob and Db/Db Mice.

    abstract:Introduction:Gut microbiota is involved in the progression of metabolic diseases such as obesity and type 2 diabetes. The ob/ob and db/db mice are extensively used as models in studies on the pathogenesis of these diseases. The goal of this study is to characterize the composition and structure of gut microbiota in the...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2019/1394097

    authors: Yang M,Liu Y,Xie H,Wen Z,Zhang Y,Wu C,Huang L,Wu J,Xie C,Wang T,Peng W,Liu S,Chen L,Liu X

    更新日期:2019-03-11 00:00:00

  • The Association between the Epicardial Adipose Tissue Thickness and Oxidative Stress Parameters in Isolated Metabolic Syndrome Patients: A Multimarker Approach.

    abstract::The risk for cardiovascular diseases and type 2 diabetes mellitus significantly increases in the patient population with metabolic syndrome (MeS). The present study aimed to investigate the association between the epicardial adipose tissue thickness (EATT) and the oxidative stress parameters in MeS patients. The study...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2014/954045

    authors: Demir B,Demir E,Acıksarı G,Uygun T,Utku IK,Gedikbasi A,Caglar IM,Pirhan O,Tureli HO,Oflar E,Ungan İ,Ciftci S,Karakaya O

    更新日期:2014-01-01 00:00:00

  • Effects of Vitamin D Supplementation on Glucose and Insulin Homeostasis and Incident Diabetes among Nondiabetic Adults: A Meta-Analysis of Randomized Controlled Trials.

    abstract:Aims:Emerging evidence has suggested a mechanistic link from vitamin D metabolism to glucose and insulin homeostasis. This study is aimed at specifically quantifying the direct effects of vitamin D supplementation on indexes of glucose and insulin homeostasis as well as incidence of type 2 diabetes (T2D) among nondiabe...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2018/7908764

    authors: Tang H,Li D,Li Y,Zhang X,Song Y,Li X

    更新日期:2018-12-03 00:00:00

  • A new aurora in anaplastic thyroid cancer therapy.

    abstract::Anaplastic thyroid cancers (ATC) are among the most aggressive human neoplasms with a dire prognosis and a median survival time of few months from the diagnosis. The complete absence of effective therapies for ATC renders the identification of novel therapeutic approaches sorely needed. Chromosomal instability, a feat...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章,评审

    doi:10.1155/2014/816430

    authors: Baldini E,D'Armiento M,Ulisse S

    更新日期:2014-01-01 00:00:00

  • Intrahepatic Lipid Content and Insulin Resistance Are More Strongly Associated with Impaired NEFA Suppression after Oral Glucose Loading Than with Fasting NEFA Levels in Healthy Older Individuals.

    abstract::Introduction. The mechanisms underlying the association between insulin resistance and intrahepatic lipid (IHL) accumulation are not completely understood. We sought to determine whether this association was explained by differences in fasting non-esterified fatty acid (NEFA) levels and/or NEFA suppression after oral ...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2013/870487

    authors: Finucane FM,Sharp SJ,Hatunic M,Sleigh A,De Lucia Rolfe E,Sayer AA,Cooper C,Griffin SJ,Savage DB,Wareham NJ

    更新日期:2013-01-01 00:00:00

  • Efficacy, Safety, and Quality of Treatment Satisfaction of Premixed Human and Analogue Insulin Regimens in a Large Cohort of Type 2 Diabetic Patients: PROGENS BENEFIT Observational Study.

    abstract::Diabetes is a lifelong course disease, so insulin treatment has to be effective and safe, and patients should be satisfied with it. We aimed to compare efficacy, safety, and quality of treatment satisfaction of human and premixed analogue insulin among 3264 patients (53.58% women) with type 2 diabetes mellitus (T2DM) ...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2018/6536178

    authors: Nabrdalik K,Kwiendacz H,Sawczyn T,Tomasik A,Kukla M,Masierek M,Gumprecht J

    更新日期:2018-03-05 00:00:00

  • Chronic sleep disturbance impairs glucose homeostasis in rats.

    abstract::Epidemiological studies have shown an association between short or disrupted sleep and an increased risk for metabolic disorders. To assess a possible causal relationship, we examined the effects of experimental sleep disturbance on glucose regulation in Wistar rats under controlled laboratory conditions. Three groups...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2010/819414

    authors: Barf RP,Meerlo P,Scheurink AJ

    更新日期:2010-01-01 00:00:00

  • Long Noncoding RNA LOC100129940-N Is Upregulated in Papillary Thyroid Cancer and Promotes the Invasion and Progression.

    abstract::Thyroid cancer is the most common endocrine malignancy, and its incidence has increased rapidly in recent decades worldwide. Papillary thyroid cancer (PTC) is the most common type of all thyroid cancers. The molecular mechanisms underlying the disease still need to be further investigated. Long noncoding RNAs (lncRNAs...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2019/7043509

    authors: Choy M,Guo Y,Li H,Wei G,Ye R,Liang W,Xiao H,Li Y,Guan H

    更新日期:2019-04-07 00:00:00

  • The impact of a pure protein load on the glucose levels in type 1 diabetes patients treated with insulin pumps.

    abstract::We aimed to estimate the impact of ingestion of a pure protein load on the glucose levels in T1DM patients treated with insulin pumps. We examined 10 T1DM patients (6 females, mean age-32.3 years, mean HbA1c-6.8%) treated with insulin pumps equipped with a continuous glucose monitoring system (CGMS). In Phase I, basel...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2015/216918

    authors: Klupa T,Benbenek-Klupa T,Matejko B,Mrozinska S,Malecki MT

    更新日期:2015-01-01 00:00:00

  • Simvastatin does not affect vitamin d status, but low vitamin d levels are associated with dyslipidemia: results from a randomised, controlled trial.

    abstract::Objectives. Statin drugs act as inhibitors of the 3-hydroxy-3methylglutaryl coenzyme A (HMG-CoA) reductase enzyme early in the mevalonate pathway, thereby reducing the endogenous cholesterol synthesis. In recent studies, it has been suggested from epidemiological data that statins also may improve vitamin D status, as...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2010/957174

    authors: Rejnmark L,Vestergaard P,Heickendorff L,Mosekilde L

    更新日期:2010-01-01 00:00:00

  • A simple matter of life and death-the trials of postnatal Beta-cell mass regulation.

    abstract::Pancreatic beta-cells, which secrete the hormone insulin, are the key arbiters of glucose homeostasis. Defective beta-cell numbers and/or function underlie essentially all major forms of diabetes and must be restored if diabetes is to be cured. Thus, the identification of the molecular regulators of beta-cell mass and...

    journal_title:International journal of endocrinology

    pub_type: 杂志文章

    doi:10.1155/2012/516718

    authors: Tarabra E,Pelengaris S,Khan M

    更新日期:2012-01-01 00:00:00