Jianwen Chen

ORCID: 0000-0003-1904-2676
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About
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Research Areas
  • Growth Hormone and Insulin-like Growth Factors
  • Advanced X-ray Imaging Techniques
  • Virus-based gene therapy research
  • Caveolin-1 and cellular processes
  • Digital Holography and Microscopy
  • Pituitary Gland Disorders and Treatments
  • Hydrocarbon exploration and reservoir analysis
  • Diabetes and associated disorders
  • Chronic Kidney Disease and Diabetes
  • Animal Virus Infections Studies
  • Geological and Geophysical Studies
  • Genetics, Aging, and Longevity in Model Organisms
  • RNA Interference and Gene Delivery
  • Advanced Electron Microscopy Techniques and Applications
  • Renal and related cancers
  • Metabolism, Diabetes, and Cancer
  • Crystallography and Radiation Phenomena
  • Drug Transport and Resistance Mechanisms
  • Particle Accelerators and Free-Electron Lasers
  • Diabetes Treatment and Management
  • CRISPR and Genetic Engineering
  • Geological Studies and Exploration
  • Lipid metabolism and disorders
  • Viral gastroenteritis research and epidemiology
  • MicroRNA in disease regulation

Qingdao Institute of Marine Geology
2023-2025

South China Agricultural University
2022-2025

Qingdao National Laboratory for Marine Science and Technology
2023-2025

Sun Yat-sen University
2024-2025

Sun Yat-sen University Cancer Center
2024-2025

State Council of the People's Republic of China
2024

Chinese PLA General Hospital
2017-2023

Laoshan Laboratory
2023

China Geological Survey
2023

Chinese General Hospital College of Nursing and Liberal Arts
2022

Context: Pegvisomant is a GH receptor antagonist that blocks the peripheral actions of in acromegaly. Pegvisomant, contrast to somatostatin (SMS) analogs, does not suppress activity GH-producing adenoma. Objective: We assessed effects cotreatment with pegvisomant and SMS acromegaly on secretion, IGF-I levels, glucose tolerance. Design, Patients, Interventions: Eleven patients persistent disease despite previous therapy underwent following fixed treatment algorithm: 1) therapy, 2) off for 2...

10.1210/jc.2005-0531 article EN The Journal of Clinical Endocrinology & Metabolism 2005-10-01

Hepatitis B virus (HBV) is a major risk factor for the development and progression of hepatocellular carcinoma. It has been reported that viral infection can interfere with cellular microRNA (miRNA) expression participate in pathogenesis oncogenicity. Here, we report decreasing levels miRNA miR-192-3p associated rising HBV DNA serum patients. We revealed repressed through hepatitis x protein interaction c-myc. further showed was by transfection vitro mouse model, leading to autophagy. Using...

10.1002/hep.30248 article EN cc-by-nc-nd Hepatology 2018-09-04

Abstract We aimed to investigate the role of renal pericyte pyruvate kinase M2 (PKM2) in progression acute kidney injury (AKI) chronic disease (CKD). The PKM2 pericyte‐myofibroblast transdifferentiation was investigated an AKI‐CKD mouse model. Platelet growth factor receptor beta (PDGFRβ)‐iCreERT2; tdTomato mice were used for tracing. Western blotting and immunofluorescence staining examine protein expression. An 5‐ethynyl‐2′‐deoxyuridine assay measure proliferation. A scratch cell migration...

10.1111/cpr.13548 article EN cc-by Cell Proliferation 2023-09-25

Pituitary GH secretion is feedback regulated by circulating IGF-I. However, it remains to be determined whether the control mediated through free or total To study this, we compared temporal changes in levels of vs. and IGF-I during fasting. Seventeen healthy normal-weight subjects (body mass index 23.4 ± 0.6 kg/m2) were studied 80 h Serum was assayed for every 3 h; total, free, bioactive IGF-I, IGF binding protein (IGFBP)-1, -2, -3 as well IGFBP-1 bound morning. During fasting, mean 24-h...

10.1210/jc.2004-0039 article EN The Journal of Clinical Endocrinology & Metabolism 2005-01-01

Regulation of IGF-I activity appears crucial in anorexia nervosa (AN) during adaptation to chronic starvation as well the regenerative processes on nutritional restoration.The objective this study was examine relationship between bioactivity and IGF-binding capacity expressed formation binary complex protein-1 (IGFBP-1) patients with AN at different stages subtypes disease.This a longitudinal study.The took place clinical research center university hospital.We studied total 45 women 24...

10.1210/jc.2006-1926 article EN The Journal of Clinical Endocrinology & Metabolism 2007-03-27

Swine enteric diseases have caused significant economic loss and been considered as the major threat to global swine industry. Several coronaviruses, including transmissible gastroenteritis virus (TGEV) porcine epidemic diarrhea (PEDV), identified causative agents of these diseases. Effective measures control are lacking. The host cells thought be epithelial on small intestine villi. Aminopeptidase-N (APN) has described putative receptor for entry into in vitro. Recently, Whitworth et al....

10.1038/s41598-019-49838-y article EN cc-by Scientific Reports 2019-09-12

The geological storage of carbon dioxide (CO2) is the most suitable option to achieve a large-scale and low-cost CO2 emissions worldwide, but selection favorable areas for main issue. In this study, evaluation indicators were selected considering four aspects, namely conditions, potential, hydrogeological engineering based on drilling, geophysical, geochemical data from Beibu Gulf Basin. analytical hierarchy process fuzzy comprehensive method used evaluate suitability basin CO2. results...

10.3390/en16052360 article EN cc-by Energies 2023-03-01

Raised serum sialic acid concentration is a strong predictor of cardiovascular mortality in the general white population. A progressive increase morbidity and takes place relation to increasing albuminuria NIDDM patients. Therefore, we investigated potential association between micro- macroangiopathy patients.We studied prevalence cohort all patients < 76 years age attending diabetic clinic during 1 year. Of patients, 319 had normoalbuminuria, 148 microalbuminuria, 75 macroalbuminuria...

10.2337/diacare.19.2.130 article EN Diabetes Care 1996-02-01

Abstract The GH-IGF-I axis is disturbed in patients with type 1 diabetes. Our aim was to investigate whether abnormalities are found very good glycemic control and, if so, estimate the role of residual β-cell function. Patients hemoglobin A1c (HbA1c) less than 6% (reference range, 3.6–5.4%) were selected for study. Twenty-two men and 24 women, aged 41.3 ± 13.8 yr (mean sd), a diabetes duration 17.8 14.6 participated. Healthy controls (15 women nine men), 13.0 yr, also studied. Overnight...

10.1210/jc.2004-0572 article EN The Journal of Clinical Endocrinology & Metabolism 2004-12-01

BACKGROUND: Renal cell carcinoma (RCC) is one of the most malignant genitourinary diseases worldwide. Long noncoding RNAs (lncRNAs) are a class in human genome that involved RCC initiation and progression. OBJECTIVE: To investigate expression PVT1 ccRCC ev aluate its correlation with clinicopathologic characteristics patients' survival. METHODS: Quantitative real-time PCR was performed to examine 129 tissue samples matched adjacent normal samples. The relationship clinical outcome evaluated....

10.3233/cbm-170251 article EN Cancer Biomarkers 2017-10-27

Abstract Oolong tea, a popular traditional Chinese possesses various bioactivities, but little is known about its roles in the protection against pathogens, such as Staphylococcus aureus , vivo. This study investigated of water‐soluble oolong tea extracts (OTE) on S. infection Caenorhabditis elegans promisin g model to host‐microbe interactions Pretreatment with OTE (0.6% and 1.2%) co‐treatment extended lifespan by 11.16%–30.37%, increased body bends 36.49%–101.39%, inhibited lipid...

10.1111/1750-3841.17651 article EN Journal of Food Science 2025-01-01

During the Mesozoic, NE Asia experienced intense tectonic and magmatic activity, including closure of Mongol–Okhotsk Ocean (MOO), subduction demise Mudanjiang Oceanic Plate (MOP), continuous westward Paleo-Pacific (PPP). The evolution MOP remains highly contentious, particularly regarding its final timing polarity, warrants further investigation. Heilongjiang Complex (HLC), primarily distributed within Suture Zone (MSZ), which separates Jiamusi Songnen blocks, preserves key geological...

10.3390/min15020164 article EN Minerals 2025-02-11

Abstract Mosaic disease is one of the predominant viral diseases affecting sugarcane plants worldwide. In China, it mainly caused by sorghum mosaic virus (SrMV). Exogenous silicon (ESi) has emerged as a promising inducer plant resistance. This study aims to elucidate mechanistic effects exogenous on enhancing resistance SrMV in sugarcane. ESi was applied soil at different rates (15 g per barrel −1 , 30 and 45 ), leading significant reduction incidence (26.66–82.22%) compared...

10.1111/ppl.70127 article EN Physiologia Plantarum 2025-01-01

Whether continuing immunotherapy after progression in second-line settings of metastatic gastric cancer (MGC) remains unclear. Herein, we explored the efficacy PD-1 inhibitors for MGC on previous chemoimmunotherapy. We retrospectively identified patients who received oxaliplatin-based chemotherapy plus inhibitor, with or without trastuzumab, as first-line treatment. The treatment beyond were divided into (TBP) group and non-TBP (NTBP) group. median free survival (PFS) overall (OS) from start...

10.1186/s12885-025-14286-7 article EN cc-by-nc-nd BMC Cancer 2025-05-24

&lt;i&gt;Background:&lt;/i&gt; In a recently described patient with acid-labile subunit (ALS) deficiency, the inability to form ternary complexes resulted in marked reduction circulating total insulin-like growth factor (IGF)-I, whereas skeletal was only marginally affected. To further study role of versus locally produced IGF-I this patient, we now describe detail changes and their relationship several components IGF system. &lt;i&gt;Design Methods:&lt;/i&gt; We followed development up...

10.1159/000098479 article EN Hormone Research in Paediatrics 2007-01-01

Abstract Caveolin‐1 is a major caveolae‐coat protein involved in variety of cell signaling processes. Some studies have suggested that the level caveolin‐1 expression positively correlates with multi‐drug resistance cancer cells. We demonstrated for first time Hs578T doxorubicin resistant cells (Hs578T/Doxo), which contain low levels endogenous and high P‐glycoprotein, are rendered drug‐sensitive by overexpression exogenous caveolin‐1. MTT assays showed after overexpressing caveolin‐1, drug...

10.1002/ijc.20300 article EN International Journal of Cancer 2004-05-04

Lactobacillus fermentum can exert antiaging effects, but their roles are strain-specific, and little is known about the molecular mechanisms in some strains. This study investigated effects of L. WC2020 (WC2020) isolated from Chinese fermented pickles underlying mechanism action Caenorhabditis elegans. enhanced mean lifespan L1-stage L4-stage worms by 22.67% 12.42%, respectively, compared with Escherichia coli OP50 (OP50), a standard food source for C. WC2020-induced longevity was...

10.1111/1750-3841.17069 article EN Journal of Food Science 2024-04-18

Abstract The oral consumption of collagen hydrolysates derived from various animal tissues has been demonstrated to have beneficial effects on skin health, particularly in combating the signs aging. Here this study, a novel animal-derived FS-Collagen were developed and its against aging was analyzed new mice model established through combination UV irradiation d -galactose induction. 8 Weeks administration significant protective mice, evidenced by preservation skin’s macroscopic appearance,...

10.1007/s10068-024-01660-7 article EN cc-by Food Science and Biotechnology 2024-08-07

According to the raft hypothesis, sphingolipid–cholesterol (CHOL) microdomains are involved in numerous cellular functions. Here, we have prepared liposomes simulate lipid composition of rafts/caveolae using phosphatidylchone, sphingomyelin (SPM)–CHOL vitro. Experiments both 1,6‐diphenyl‐1,3,5‐hexatriene and merocyanine‐540 fluorescence showed that a phase transition from l d o can be observed clearly. In particular, investigated behavior membrane protein, plasma Ca 2+ ‐ATPase (PMCA), rafts...

10.1016/j.febslet.2005.03.038 article EN FEBS Letters 2005-03-29

Caveolin‐1, the principal component of caveolae, is a 21–24 kDa integral membrane protein. The interaction caveolin‐1 scaffolding domain with signaling molecules can functionally inhibit activity these proteins. Little known about how influences expression P‐glycoprotein (P‐gp), an ABC transporter encoded by multi‐drug resistance (MDR1) gene. To elucidate possible mechanism between and P‐gp expression, in present study, we overexpressed Hs578T/Dox breast adenocarcinoma cells, multidrug...

10.1016/j.febslet.2004.09.041 article EN FEBS Letters 2004-09-25

It is unclear how IGFs become separated from their IGF-binding proteins (IGFBPs) in vivo. However, the IGFBPs possess binding sites for glycosaminoglycans (GAGs) and interaction with GAGs alters IGFBP ligand affinity. Accordingly, may control IGF bioavailability. To test this hypothesis, we investigated effect of on serum levels free bioactive IGF-I, total vitro.Serum was incubated increasing concentrations six different (heparin, tinzaparin (Innohep), dermatan sulfate, heparan...

10.1530/eje.1.02203 article EN European Journal of Endocrinology 2006-07-25
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