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Di Majo D, Ricciardi N, Di Liberto V, Allegra M, Frinchi M, Urone G, Scordino M, Massaro A, Mudò G, Ferraro G, Sardo P, Giglia G, Gambino G. The remarkable impact of Opuntia Ficus Indica fruit administration on metabolic syndrome: Correlations between cognitive functions, oxidative stress and lipid dysmetabolism in the high-fat, diet-fed rat model. Biomed Pharmacother 2024; 177:117028. [PMID: 38959603 DOI: 10.1016/j.biopha.2024.117028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/21/2024] [Accepted: 06/21/2024] [Indexed: 07/05/2024] Open
Abstract
BACKGROUND A wealth of evidence underscores the bioactive properties of nutraceuticals and functional foods in addressing oxyinflammatory-based diseases with implications at both peripheral and central levels. Opuntia ficus-indica (OFI) is well-documented for its health-promoting attributes, though its fruit (OFIF) remains relatively understudied. Not only poses Metabolic Syndrome (MetS) cardiometabolic risks but also contributes significantly to cognitive impairment, especially in crucial brain areas such as hippocampus and hypothalamus. METHODS Following 8 weeks of HFD to induce MetS, rats received OFIF oral supplementation for 4 weeks to evaluate cognitive and affective modifications using behavioural paradigms, i.e. open field, burrowing, white-dark box, novelty-suppressed feeding, and object recognition tests. Our investigation extended to biochemical evaluations of lipid homeostasis, central and peripheral oxidative stress and neurotrophic pathways, correlating these measures together with circulating leptin levels. RESULTS Our data revealed that OFIF modulation of leptin positively correlates with systemic and brain oxidative stress, with markers of increased anxiety-like behaviour and impaired lipid homeostasis. On the other hand, leptin levels reduced by OFIF are associated with improved antioxidant barriers, declarative memory and neurotrophic signalling. DISCUSSION This study underscores OFIF neuroactive potential in the context of MetS-associated cognitive impairment, offering insights into its mechanisms and implications for future therapeutic strategies.
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Affiliation(s)
- Danila Di Majo
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy; Post-Graduate School of Nutrition and Food Science, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Nicolò Ricciardi
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Valentina Di Liberto
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Mario Allegra
- Post-Graduate School of Nutrition and Food Science, School of Medicine, University of Palermo, Palermo 90127, Italy; Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Palermo 90128, Italy
| | - Monica Frinchi
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Giulia Urone
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Miriana Scordino
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Alessandro Massaro
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Palermo 90128, Italy
| | - Giuseppa Mudò
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Giuseppe Ferraro
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy; Post-Graduate School of Nutrition and Food Science, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Pierangelo Sardo
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy; Post-Graduate School of Nutrition and Food Science, School of Medicine, University of Palermo, Palermo 90127, Italy
| | - Giuseppe Giglia
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy; Post-Graduate School of Nutrition and Food Science, School of Medicine, University of Palermo, Palermo 90127, Italy.
| | - Giuditta Gambino
- Department of Biomedicine Neuroscience and Advanced Diagnostics, Section of Human Physiology, School of Medicine, University of Palermo, Palermo 90127, Italy; Post-Graduate School of Nutrition and Food Science, School of Medicine, University of Palermo, Palermo 90127, Italy
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Carneiro L, Fenech C, Liénard F, Grall S, Abed B, Haydar J, Allard C, Desmoulins L, Paccoud R, Brindisi MC, Mouillot T, Brondel L, Fioramonti X, Pénicaud L, Jacquin-Piques A, Leloup C. Hypothalamic Glucose Hypersensitivity-Induced Insulin Secretion in the Obese Zücker Rat Is Reversed by Central Ghrelin Treatment. Antioxid Redox Signal 2024; 40:837-849. [PMID: 36656675 DOI: 10.1089/ars.2022.0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Aims: Part of hypothalamic (mediobasal hypothalamus [MBH]) neurons detect changes in blood glucose levels that in turn coordinate the vagal control of insulin secretion. This control cascade requires the production of mitochondrial reactive oxygen species (mROS), which is altered in models of obesity and insulin resistance. Obese, insulin-resistant Zücker rats are characterized by hypothalamic hypersensitivity to glucose. This initiates an abnormal vagus-induced insulin secretion, associated with an overproduction of mROS in response to a low glucose dose. Here, we hypothesized that ghrelin, known to buffer reactive oxygen species (ROS) via mitochondrial function, may be a major component of the hypothalamic glucose hypersensitivity in the hypoghrelinemic obese Zücker rat. Results: Hypothalamic glucose hypersensitivity-induced insulin secretion of Zücker obese rats was reversed by ghrelin pretreatment. The overproduction of MBH mROS in response to a low glucose load no longer occurred in obese rats that had previously received the cerebral ghrelin infusion. This decrease in mROS production was accompanied by a normalization of oxidative phosphorylation (OXPHOS). Conversely, blocking the action of ghrelin with a growth hormone secretagogue receptor antagonist in a model of hyperghrelinemia (fasted rats) completely restored hypothalamic glucose sensing-induced insulin secretion that was almost absent in this physiological situation. Accordingly, ROS signaling and mitochondrial activity were increased by the ghrelin receptor antagonist. Innovation: These results demonstrate for the first time that ghrelin addressed only to the brain could have a protective effect on the defective control of insulin secretion in the insulin-resistant, hypoghrelinemic obese subject. Conclusions: Ghrelin, through its action on OXPHOS, modulates mROS signaling in response to cerebral hyperglycemia and the consequent vagal control of insulin secretion. In insulin-resistant obese states, brain hypoghrelinemia could be responsible for the nervous defect in insulin secretion.
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Affiliation(s)
- Lionel Carneiro
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
- INSERM U1220, Institut de Recherche en Santé Digestive (IRSD), Université Paul Sabatier, Toulouse III, CHU Purpan, Toulouse, France
| | - Claire Fenech
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Fabienne Liénard
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Sylvie Grall
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Besma Abed
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Joulia Haydar
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Camille Allard
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
- University of Bordeaux, INSERM U1215, Neurocentre Magendie, Bordeaux, France
| | - Lucie Desmoulins
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
- Department of Physiology, School of Medicine, Tulane University, New Orleans, Louisiana, USA
| | - Romain Paccoud
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Marie-Claude Brindisi
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Thomas Mouillot
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Laurent Brondel
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Xavier Fioramonti
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
- NutriNeuro, UMR 1286 INRAE, Bordeaux University, Bordeaux INP, Neurocampus, Bordeaux, France
| | - Luc Pénicaud
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
- STROMALab, CNRS ERL 5311, Toulouse, France
| | - Agnès Jacquin-Piques
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
| | - Corinne Leloup
- Centre des Sciences du Goût et de l'Alimentation, UMR Université de Bourgogne, CNRS 6265, INRAE 1324, Université Bourgogne Franche-Comté, Dijon, France
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Zhang Y, Fang XM. The pan-liver network theory: From traditional chinese medicine to western medicine. CHINESE J PHYSIOL 2023; 66:401-436. [PMID: 38149555 DOI: 10.4103/cjop.cjop-d-22-00131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023] Open
Abstract
In traditional Chinese medicine (TCM), the liver is the "general organ" that is responsible for governing/maintaining the free flow of qi over the entire body and storing blood. According to the classic five elements theory, zang-xiang theory, yin-yang theory, meridians and collaterals theory, and the five-viscera correlation theory, the liver has essential relationships with many extrahepatic organs or tissues, such as the mother-child relationships between the liver and the heart, and the yin-yang and exterior-interior relationships between the liver and the gallbladder. The influences of the liver to the extrahepatic organs or tissues have been well-established when treating the extrahepatic diseases from the perspective of modulating the liver by using the ancient classic prescriptions of TCM and the acupuncture and moxibustion. In modern medicine, as the largest solid organ in the human body, the liver has the typical functions of filtration and storage of blood; metabolism of carbohydrates, fats, proteins, hormones, and foreign chemicals; formation of bile; storage of vitamins and iron; and formation of coagulation factors. The liver also has essential endocrine function, and acts as an immunological organ due to containing the resident immune cells. In the perspective of modern human anatomy, physiology, and pathophysiology, the liver has the organ interactions with the extrahepatic organs or tissues, for example, the gut, pancreas, adipose, skeletal muscle, heart, lung, kidney, brain, spleen, eyes, skin, bone, and sexual organs, through the circulation (including hemodynamics, redox signals, hepatokines, metabolites, and the translocation of microbiota or its products, such as endotoxins), the neural signals, or other forms of pathogenic factors, under normal or diseases status. The organ interactions centered on the liver not only influence the homeostasis of these indicated organs or tissues, but also contribute to the pathogenesis of cardiometabolic diseases (including obesity, type 2 diabetes mellitus, metabolic [dysfunction]-associated fatty liver diseases, and cardio-cerebrovascular diseases), pulmonary diseases, hyperuricemia and gout, chronic kidney disease, and male and female sexual dysfunction. Therefore, based on TCM and modern medicine, the liver has the bidirectional interaction with the extrahepatic organ or tissue, and this established bidirectional interaction system may further interact with another one or more extrahepatic organs/tissues, thus depicting a complex "pan-hepatic network" model. The pan-hepatic network acts as one of the essential mechanisms of homeostasis and the pathogenesis of diseases.
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Affiliation(s)
- Yaxing Zhang
- Department of Physiology; Research Centre of Basic Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong; Issue 12th of Guangxi Apprenticeship Education of Traditional Chinese Medicine (Shi-Cheng Class of Guangxi University of Chinese Medicine), College of Continuing Education, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Xian-Ming Fang
- Department of Cardiology, Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine (Guangxi Hospital of Integrated Chinese Medicine and Western Medicine, Ruikang Clinical Faculty of Guangxi University of Chinese Medicine), Guangxi University of Chinese Medicine, Nanning, Guangxi, China
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Townsend LK, Steinberg GR. AMPK and the Endocrine Control of Metabolism. Endocr Rev 2023; 44:910-933. [PMID: 37115289 DOI: 10.1210/endrev/bnad012] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/10/2023] [Accepted: 04/24/2023] [Indexed: 04/29/2023]
Abstract
Complex multicellular organisms require a coordinated response from multiple tissues to maintain whole-body homeostasis in the face of energetic stressors such as fasting, cold, and exercise. It is also essential that energy is stored efficiently with feeding and the chronic nutrient surplus that occurs with obesity. Mammals have adapted several endocrine signals that regulate metabolism in response to changes in nutrient availability and energy demand. These include hormones altered by fasting and refeeding including insulin, glucagon, glucagon-like peptide-1, catecholamines, ghrelin, and fibroblast growth factor 21; adipokines such as leptin and adiponectin; cell stress-induced cytokines like tumor necrosis factor alpha and growth differentiating factor 15, and lastly exerkines such as interleukin-6 and irisin. Over the last 2 decades, it has become apparent that many of these endocrine factors control metabolism by regulating the activity of the AMPK (adenosine monophosphate-activated protein kinase). AMPK is a master regulator of nutrient homeostasis, phosphorylating over 100 distinct substrates that are critical for controlling autophagy, carbohydrate, fatty acid, cholesterol, and protein metabolism. In this review, we discuss how AMPK integrates endocrine signals to maintain energy balance in response to diverse homeostatic challenges. We also present some considerations with respect to experimental design which should enhance reproducibility and the fidelity of the conclusions.
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Affiliation(s)
- Logan K Townsend
- Centre for Metabolism Obesity and Diabetes Research, Hamilton, ON L8S 4L8, Canada
- Division of Endocrinology and Metabolism, Department of Medicine, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Gregory R Steinberg
- Centre for Metabolism Obesity and Diabetes Research, Hamilton, ON L8S 4L8, Canada
- Division of Endocrinology and Metabolism, Department of Medicine, McMaster University, Hamilton, ON L8S 4L8, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
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Alaamri S, Serafi AS, Hussain Z, Alrooqi MM, Bafail MA, Sohail S. Blood Pressure Correlates with Serum Leptin and Body Mass Index in Overweight Male Saudi Students. J Pers Med 2023; 13:jpm13050828. [PMID: 37240998 DOI: 10.3390/jpm13050828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/08/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
The precise association of serum leptin (Lep) with the body mass index (BMI) and blood pressure (BP) is not well known for understanding their involvement in health and disease. Hence, the present study was conducted to investigate the association of BP, BMI and serum Lep levels in young normal-weight (NW) and overweight (OW) male Saudi students. The NW (n: 198) and OW (n: 192) male subjects in the age range of 18-20 years were consulted. The BP was measured with a mercury sphygmomanometer. Leptin Human ELISA Kits were employed for the determination of the serum Lep levels. The mean ± SD values of BMI (kg/m2), Lep (ng/mL), systolic BP (SBP; mmHg), and diastolic BP (DBP; mmHg) all showed significant differences for young OW vs. NW subjects as: 27.52 ± 1.42 vs. 21.49 ± 2.03; 10.70 ± 4.67 vs. 4.68 ± 1.91; 121.37 ± 2.59 vs. 118.51 ± 1.54 and 81.44 ± 1.97 vs. 78.79 ± 1.44, respectively. All associations (among BMI, Lep, SBP and DBP) showed a positive linear and significant correlation, except the nonsignificant correlation of BMI and SBP for the NW group. Other variables showing significant variation for NW vs. OW subjects were: interleukin-6, high sensitivity C-reactive protein, apelin (APLN) and resistin. Serum APLN correlated significantly with Lep, BMI, SBP and DBP in lower and higher levels of BMI, with considerable progressive patterns in both the NW and OW groups and subgroups. The present study in young Saudi male students presents significant variations for BP and serum leptin levels, and a significant positive linear association among serum leptin, BMI and BP.
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Affiliation(s)
- Shalan Alaamri
- Department of Medicine, College of Medicine, University of Jeddah, Jeddah 21589, Saudi Arabia
| | - Abdulhalim S Serafi
- Department of Physiology, Faculty of Medicine, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Zahir Hussain
- Department of Physiology, Faculty of Medicine, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Munira M Alrooqi
- Department of Chemistry, Faculty of Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Mohammed A Bafail
- Department of Physiology, Faculty of Medicine, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Sumera Sohail
- Department of Physiology, University of Karachi, Karachi 75270, Pakistan
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Sun H, Lin W, Tang Y, Tu H, Chen T, Zhou J, Wang D, Xu Q, Niu J, Dong W, Liu S, Ni X, Yang W, Zhao Y, Ying L, Zhang J, Li X, Mohammadi M, Shen WL, Huang Z. Sustained remission of type 2 diabetes in rodents by centrally administered fibroblast growth factor 4. Cell Metab 2023:S1550-4131(23)00172-9. [PMID: 37167965 DOI: 10.1016/j.cmet.2023.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 09/30/2022] [Accepted: 04/21/2023] [Indexed: 05/13/2023]
Abstract
Type 2 diabetes (T2D) is a major health and economic burden worldwide. Despite the availability of multiple drugs for short-term management, sustained remission of T2D is currently not achievable pharmacologically. Intracerebroventricular administration of fibroblast growth factor 1 (icvFGF1) induces sustained remission in T2D rodents, propelling intense research efforts to understand its mechanism of action. Whether other FGFs possess similar therapeutic benefits is currently unknown. Here, we show that icvFGF4 also elicits a sustained antidiabetic effect in both male db/db mice and diet-induced obese mice by activating FGF receptor 1 (FGFR1) expressed in glucose-sensing neurons within the mediobasal hypothalamus. Specifically, FGF4 excites glucose-excited (GE) neurons while inhibiting glucose-inhibited (GI) neurons. Moreover, icvFGF4 restores the percentage of GI neurons in db/db mice. Importantly, intranasal delivery of FGF4 alleviates hyperglycemia in db/db mice, paving the way for non-invasive therapy. We conclude that icvFGF4 holds significant therapeutic potential for achieving sustained remission of T2D.
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Affiliation(s)
- Hongbin Sun
- School of Life Science and Technology & Shanghai Clinical Research and Trial Center, ShanghaiTech University, Shanghai 201210, China
| | - Wei Lin
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yu Tang
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Department of Physiology, Chengdu Medical College, Chengdu, Sichuan 610500, China
| | - Hongqing Tu
- School of Life Science and Technology & Shanghai Clinical Research and Trial Center, ShanghaiTech University, Shanghai 201210, China
| | - Ting Chen
- School of Life Science and Technology & Shanghai Clinical Research and Trial Center, ShanghaiTech University, Shanghai 201210, China
| | - Jie Zhou
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Dezhong Wang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Qingqing Xu
- Biology Science Institutes, Chongqing Medical University, Chongqing 400016, China
| | - Jianlou Niu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wenliya Dong
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Sidan Liu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Xinyan Ni
- School of Life Science and Technology & Shanghai Clinical Research and Trial Center, ShanghaiTech University, Shanghai 201210, China
| | - Wen Yang
- School of Life Science and Technology & Shanghai Clinical Research and Trial Center, ShanghaiTech University, Shanghai 201210, China
| | - Yingzheng Zhao
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lei Ying
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jie Zhang
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Department of Physiology, Chengdu Medical College, Chengdu, Sichuan 610500, China
| | - Xiaokun Li
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Moosa Mohammadi
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wei L Shen
- School of Life Science and Technology & Shanghai Clinical Research and Trial Center, ShanghaiTech University, Shanghai 201210, China.
| | - Zhifeng Huang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health) & School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
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Antipsychotics impair regulation of glucose metabolism by central glucose. Mol Psychiatry 2022; 27:4741-4753. [PMID: 36241692 DOI: 10.1038/s41380-022-01798-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 09/06/2022] [Accepted: 09/09/2022] [Indexed: 12/14/2022]
Abstract
Hypothalamic detection of elevated circulating glucose triggers suppression of endogenous glucose production (EGP) to maintain glucose homeostasis. Antipsychotics alleviate symptoms associated with schizophrenia but also increase the risk for impaired glucose metabolism. In the current study, we examined whether two acutely administered antipsychotics from different drug classes, haloperidol (first generation antipsychotic) and olanzapine (second generation antipsychotic), affect the ability of intracerebroventricular (ICV) glucose infusion approximating postprandial levels to suppress EGP. The experimental protocol consisted of a pancreatic euglycemic clamp, followed by kinomic and RNA-seq analyses of hypothalamic samples to determine changes in serine/threonine kinase activity and gene expression, respectively. Both antipsychotics inhibited ICV glucose-mediated increases in glucose infusion rate during the clamp, a measure of whole-body glucose metabolism. Similarly, olanzapine and haloperidol blocked central glucose-induced suppression of EGP. ICV glucose stimulated the vascular endothelial growth factor (VEGF) pathway, phosphatidylinositol 3-kinase (PI3K) pathway, and kinases capable of activating KATP channels in the hypothalamus. These effects were inhibited by both antipsychotics. In conclusion, olanzapine and haloperidol impair central glucose sensing. Although results of hypothalamic analyses in our study do not prove causality, they are novel and provide the basis for a multitude of future studies.
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Pandur E, Szabó I, Hormay E, Pap R, Almási A, Sipos K, Farkas V, Karádi Z. Alterations of the expression levels of glucose, inflammation, and iron metabolism related miRNAs and their target genes in the hypothalamus of STZ-induced rat diabetes model. Diabetol Metab Syndr 2022; 14:147. [PMID: 36210435 PMCID: PMC9549668 DOI: 10.1186/s13098-022-00919-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/29/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The hypothalamus of the central nervous system is implicated in the development of diabetes due to its glucose-sensing function. Dysregulation of the hypothalamic glucose-sensing neurons leads to abnormal glucose metabolism. It has been described that fractalkine (FKN) is involved in the development of hypothalamic inflammation, which may be one of the underlying causes of a diabetic condition. Moreover, iron may play a role in the pathogenesis of diabetes via the regulation of hepcidin, the iron regulatory hormone synthesis. MicroRNAs (miRNAs) are short non-coding molecules working as key regulators of gene expression, usually by inhibiting translation. Hypothalamic miRNAs are supposed to have a role in the control of energy balance by acting as regulators of hypothalamic glucose metabolism via influencing translation. METHODS Using a miRNA array, we analysed the expression of diabetes, inflammation, and iron metabolism related miRNAs in the hypothalamus of a streptozotocin-induced rat type 1 diabetes model. Determination of the effect of miRNAs altered by STZ treatment on the target genes was carried out at protein level. RESULTS We found 18 miRNAs with altered expression levels in the hypothalamus of the STZ-treated animals, which act as the regulators of mRNAs involved in glucose metabolism, pro-inflammatory cytokine synthesis, and iron homeostasis suggesting a link between these processes in diabetes. The alterations in the expression level of these miRNAs could modify hypothalamic glucose sensing, tolerance, uptake, and phosphorylation by affecting the stability of hexokinase-2, insulin receptor, leptin receptor, glucokinase, GLUT4, insulin-like growth factor receptor 1, and phosphoenolpyruvate carboxykinase mRNA molecules. Additional miRNAs were found to be altered resulting in the elevation of FKN protein. The miRNA, mRNA, and protein analyses of the diabetic hypothalamus revealed that the iron import, export, and iron storage were all influenced by miRNAs suggesting the disturbance of hypothalamic iron homeostasis. CONCLUSION It can be supposed that glucose metabolism, inflammation, and iron homeostasis of the hypothalamus are linked via the altered expression of common miRNAs as well as the increased expression of FKN, which contribute to the imbalance of energy homeostasis, the synthesis of pro-inflammatory cytokines, and the iron accumulation of the hypothalamus. The results raise the possibility that FKN could be a potential target of new therapies targeting both inflammation and iron disturbances in diabetic conditions.
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Affiliation(s)
- Edina Pandur
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary.
| | - István Szabó
- Institute of Physiology, Medical School, University of Pécs, Szigeti út 12., 7624, Pécs, Hungary
| | - Edina Hormay
- Institute of Physiology, Medical School, University of Pécs, Szigeti út 12., 7624, Pécs, Hungary
| | - Ramóna Pap
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary
| | - Attila Almási
- Institute of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary
| | - Katalin Sipos
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary
| | - Viktória Farkas
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 4., 7624, Pécs, Hungary
| | - Zoltán Karádi
- Institute of Physiology, Medical School, University of Pécs, Szigeti út 12., 7624, Pécs, Hungary
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9
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Abstract
We are host to an assembly of microorganisms that vary in structure and function along the length of the gut and from the lumen to the mucosa. This ecosystem is collectively known as the gut microbiota and significant efforts have been spent during the past 2 decades to catalog and functionally describe the normal gut microbiota and how it varies during a wide spectrum of disease states. The gut microbiota is altered in several cardiometabolic diseases and recent work has established microbial signatures that may advance disease. However, most research has focused on identifying associations between the gut microbiota and human diseases states and to investigate causality and potential mechanisms using cells and animals. Since the gut microbiota functions on the intersection between diet and host metabolism, and can contribute to inflammation, several microbially produced metabolites and molecules may modulate cardiometabolic diseases. Here we discuss how the gut bacterial composition is altered in, and can contribute to, cardiometabolic disease, as well as how the gut bacteria can be targeted to treat and prevent metabolic diseases.
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Affiliation(s)
- Louise E Olofsson
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Sweden
| | - Fredrik Bäckhed
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Sweden.,Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health Sciences, University of Copenhagen, Denmark.,Region Västra Götaland, Sahlgrenska University Hospital, Department of Clinical Physiology, Gothenburg, Sweden
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10
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Xiao F, Guo F. Impacts of essential amino acids on energy balance. Mol Metab 2021; 57:101393. [PMID: 34785395 PMCID: PMC8829800 DOI: 10.1016/j.molmet.2021.101393] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/24/2021] [Accepted: 11/08/2021] [Indexed: 12/12/2022] Open
Abstract
Background Obesity develops due to an imbalance in energy homeostasis, wherein energy intake exceeds energy expenditure. Accumulating evidence shows that manipulations of dietary protein and their component amino acids affect the energy balance, resulting in changes in fat mass and body weight. Amino acids are not only the building blocks of proteins but also serve as signals regulating multiple biological pathways. Scope of review We present the currently available evidence regarding the effects of dietary alterations of a single essential amino acid (EAA) on energy balance and relevant signaling mechanisms at both central and peripheral levels. We summarize the association between EAAs and obesity in humans and the clinical use of modifying the dietary EAA composition for therapeutic intervention in obesity. Finally, similar mechanisms underlying diets varying in protein levels and diets altered of a single EAA are described. The current review would expand our understanding of the contribution of protein and amino acids to energy balance control, thus helping discover novel therapeutic approaches for obesity and related diseases. Major Conclusions Changes in circulating EAA levels, particularly increased branched-chain amino acids (BCAAs), have been reported in obese human and animal models. Alterations in dietary EAA intake result in improvements in fat and weight loss in rodents, and each has its distinct mechanism. For example, leucine deprivation increases energy expenditure, reduces food intake and fat mass, primarily through regulation of the general control nonderepressible 2 (GCN2) and mammalian target of rapamycin (mTOR) signaling. Methionine restriction by 80% decreases fat mass and body weight while developing hyperphagia, primarily through fibroblast growth factor 21 (FGF-21) signaling. Some effects of diets with different protein levels on energy homeostasis are mediated by similar mechanisms. However, reports on the effects and underlying mechanisms of dietary EAA imbalances on human body weight are few, and more investigations are needed in future. Dietary Essential Amino Acids (EAA) alterations affect energy homeostasis via distinct mechanisms. Alterations in dietary EAA intake can reduce fat mass and body weight. Increased circulating BCAAs have been observed in obese human and animal models.
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Affiliation(s)
- Fei Xiao
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Innovation Center for Intervention of Chronic Disease and Promotion of Health, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China
| | - Feifan Guo
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Innovation Center for Intervention of Chronic Disease and Promotion of Health, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China; Shanghai Jiao Tong University Affiliated Sixth People's Hospital, China.
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11
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Cavalcanti-de-Albuquerque JP, Donato J. Rolling out physical exercise and energy homeostasis: Focus on hypothalamic circuitries. Front Neuroendocrinol 2021; 63:100944. [PMID: 34425188 DOI: 10.1016/j.yfrne.2021.100944] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/11/2021] [Accepted: 08/18/2021] [Indexed: 01/17/2023]
Abstract
Energy balance is the fine regulation of energy expenditure and energy intake. Negative energy balance causes body weight loss, while positive energy balance promotes weight gain. Modern societies offer a maladapted way of life, where easy access to palatable foods and the lack of opportunities to perform physical activity are considered the roots of the obesity pandemic. Physical exercise increases energy expenditure and, consequently, is supposed to promote weight loss. Paradoxically, physical exercise acutely drives anorexigenic-like effects, but the mechanisms are still poorly understood. Using an evolutionary background, this review aims to highlight the potential involvement of the melanocortin system and other hypothalamic neural circuitries regulating energy balance during and after physical exercise. The physiological significance of these changes will be explored, and possible signalling agents will be addressed. The knowledge discussed here might be important for clarifying obesity aetiology as well as new therapeutic approaches for body weight loss.
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Affiliation(s)
| | - José Donato
- Department of Physiology and Biophysics, University of São Paulo, São Paulo 05508-900, Brazil.
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12
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Isaac AR, Lima-Filho RAS, Lourenco MV. How does the skeletal muscle communicate with the brain in health and disease? Neuropharmacology 2021; 197:108744. [PMID: 34363812 DOI: 10.1016/j.neuropharm.2021.108744] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/12/2021] [Accepted: 08/04/2021] [Indexed: 02/06/2023]
Abstract
Endocrine mechanisms have been largely associated with metabolic control and tissue cross talk in mammals. Classically, myokines comprise a class of signaling proteins released in the bloodstream by the skeletal muscle, which mediate physiological and metabolic responses in several tissues, including the brain. Recent exciting evidence suggests that myokines (e.g. cathepsin B, FNDC5/irisin, interleukin-6) act to control brain functions, including learning, memory, and mood, and may mediate the beneficial actions of physical exercise in the brain. However, the intricate mechanisms connecting peripherally released molecules to brain function are not fully understood. Accumulating findings further indicates that impaired skeletal muscle homeostasis impacts brain metabolism and physiology. Here we review recent findings that suggest that muscle-borne signals are essential for brain physiology and discuss perspectives on how these signals vary in response to exercise or muscle diseases. Understanding the complex interactions between skeletal muscle and brain may result in more effective therapeutic strategies to expand healthspan and to prevent brain disease.
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Affiliation(s)
- Alinny R Isaac
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Brazil
| | - Ricardo A S Lima-Filho
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Brazil
| | - Mychael V Lourenco
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Brazil.
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13
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Fang X, Chen J, Jiang C, Mei Z, Yi X, Gao Y, Hui G, Lou X. Design of electrochemical sensor array utilizing metal materials and applications in sugar content analysis from mixtures. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2021. [DOI: 10.1080/10942912.2021.1947314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xudong Fang
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Jiaqi Chen
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Chenhao Jiang
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Zhenghao Mei
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Xiaomei Yi
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Yuanyuan Gao
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Guohua Hui
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
| | - Xiongwei Lou
- School of Information Engineering, Key Laboratory of Forestry Sensing Technology and Intelligent Equipment of Department of Forestry, Key Laboratory of Forestry Intelligent Monitoring and Information Technology of Zhejiang Province, Zhejiang A & F University, Zhejiang, Hangzhou
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14
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Unraveling the Role of Leptin in Liver Function and Its Relationship with Liver Diseases. Int J Mol Sci 2020; 21:ijms21249368. [PMID: 33316927 PMCID: PMC7764544 DOI: 10.3390/ijms21249368] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/19/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023] Open
Abstract
Since its discovery twenty-five years ago, the fat-derived hormone leptin has provided a revolutionary framework for studying the physiological role of adipose tissue as an endocrine organ. Leptin exerts pleiotropic effects on many metabolic pathways and is tightly connected with the liver, the major player in systemic metabolism. As a consequence, understanding the metabolic and hormonal interplay between the liver and adipose tissue could provide us with new therapeutic targets for some chronic liver diseases, an increasing problem worldwide. In this review, we assess relevant literature regarding the main metabolic effects of leptin on the liver, by direct regulation or through the central nervous system (CNS). We draw special attention to the contribution of leptin to the non-alcoholic fatty liver disease (NAFLD) pathogenesis and its progression to more advanced stages of the disease as non-alcoholic steatohepatitis (NASH). Likewise, we describe the contribution of leptin to the liver regeneration process after partial hepatectomy, the mainstay of treatment for certain hepatic malignant tumors.
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15
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Ma R, He Q. A Variant of Leptin Gene Decreases the Risk of Gastric Cancer in Chinese Individuals: Evidence from a Case-Control Study. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2020; 13:397-404. [PMID: 33061532 PMCID: PMC7519837 DOI: 10.2147/pgpm.s258672] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 08/11/2020] [Indexed: 12/19/2022]
Abstract
Background A host of studies have explored the potential connection between leptin (LEP) G19A polymorphism and the risk of cancers, but the relationship between gastric cancer (GC) susceptibility and LEP G19A polymorphism was not revealed before. The aim of this study was to investigate this relationship in Chinese Han population. Methods Thus, this case–control study with 380 GC cases and 465 controls was designed to unearth the link between LEP G19A polymorphism and GC susceptibility. Genotyping was accomplished by a custom-made 48-Plex SNP scanTM kit. Relative LEP gene expression was detected by real-time reverse transcription-polymerase chain reaction. Results LEP G19A polymorphism was shown to relate with a decreased risk of GC. Subgroup analyses uncovered significant connections in the males, nondrinkers, and those at age <60 years. G19A polymorphism was also linked with tumor size and location and pathological type of GC. Last, LEP gene expression in gastric tissues was considerably less than in control tissues. Conclusion This study shows that G19A polymorphism of LEP gene is linked with a lower risk of GC in the tested Chinese Han individuals.
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Affiliation(s)
- Renjie Ma
- Department of Infectious Disease, The People's Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Danyang, Jiangsu Province, 212300, People's Republic of China
| | - Qi He
- Department of Infectious Disease, The People's Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Danyang, Jiangsu Province, 212300, People's Republic of China
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