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Feng Y, Qin J, Wang P, Lai Y, Tang L, Zhang X, Ren H, Yang M, Huang Q. Intermittent fasting attenuates cognitive dysfunction and systemic disease activity in mice with neuropsychiatric systemic lupus erythematosus. Life Sci 2024; 355:122999. [PMID: 39173994 DOI: 10.1016/j.lfs.2024.122999] [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] [Received: 04/16/2024] [Revised: 08/08/2024] [Accepted: 08/18/2024] [Indexed: 08/24/2024]
Abstract
AIMS Cognitive dysfunction and systemic disease activity are common manifestations of neuropsychiatric systemic lupus erythematosus (NPSLE), a condition that affects a patient's health and quality of life. Clinical and preclinical studies have demonstrated that intermittent fasting (IF) improves health conditions and quality of life. Therefore, we aimed to test whether IF improves cognitive dysfunction and systemic disease activities in mice with NPSLE and to examine the underlying mechanisms. MAIN METHODS NPSLE-prone MRL/lpr mice underwent 8 weeks of alternate-day fasting or ad libitum feeding, followed by behavioral tests to assess cognitive manifestations and biochemical tests to evaluate systemic disease activities. KEY FINDINGS IF significantly improved cognitive functionality, decreased blood-brain barrier permeability, and reduced the activation of astrocytes and microglia in the hippocampi of MRL/lpr mice. IF also improved systemic disease activities, including reduced kidney glomerular injury and interstitial inflammation, peripheral blood autoantibody titer, and splenic T lymphocyte contents. Mechanistic studies demonstrated that IF attenuates cognitive dysfunction by facilitating the microglial transition to the M2-like phenotype via the AMPK/PPARγ/NF-κB pathway. SIGNIFICANCE Together, observations from this study suggest a potential therapeutic benefit of IF in the treatment of cognitive dysfunction in patients with NPSLE.
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Affiliation(s)
- Yi Feng
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Jiayu Qin
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Pan Wang
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yanxia Lai
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Ling Tang
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xian Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Hao Ren
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Min Yang
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Qin Huang
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
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Chen B, de Launoit E, Meseguer D, Garcia Caceres C, Eichmann A, Renier N, Schneeberger M. The interactions between energy homeostasis and neurovascular plasticity. Nat Rev Endocrinol 2024:10.1038/s41574-024-01021-8. [PMID: 39054359 DOI: 10.1038/s41574-024-01021-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/10/2024] [Indexed: 07/27/2024]
Abstract
Food intake and energy expenditure are sensed and processed by multiple brain centres to uphold energy homeostasis. Evidence from the past decade points to the brain vasculature as a new critical player in regulating energy balance that functions in close association with the local neuronal networks. Nutritional imbalances alter many properties of the neurovascular system (such as neurovascular coupling and blood-brain barrier permeability), thus suggesting a bidirectional link between the nutritional milieu and neurovascular health. Increasing numbers of people are consuming a Western diet (comprising ultra-processed food with high-fat and high-sugar content) and have a sedentary lifestyle, with these factors contributing to the current obesity epidemic. Emerging pharmacological interventions (for example, glucagon-like peptide 1 receptor agonists) successfully trigger weight loss. However, whether these approaches can reverse the detrimental effects of long-term exposure to the Western diet (such as neurovascular uncoupling, neuroinflammation and blood-brain barrier disruption) and maintain stable body weight in the long-term needs to be clarified in addition to possible adverse effects. Lifestyle interventions revert the nutritional trigger for obesity and positively affect our overall health, including the cardiovascular system. This Perspective examines how lifestyle interventions affect the neurovascular system and neuronal networks.
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Affiliation(s)
- Bandy Chen
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA.
| | - Elisa de Launoit
- Sorbonne Université, Institut Du Cerveau-Paris Brain Institute-ICM, Inserm U1127, CNRS UMR 7225, Paris, France
| | - David Meseguer
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA
| | - Cristina Garcia Caceres
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Munich & German Center for Diabetes Research (DZD), Neuherberg, Germany
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Anne Eichmann
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA
- Cardiovascular Research Center, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
- Paris Cardiovascular Research Center, Inserm U970, Université Paris, Paris, France
| | - Nicolas Renier
- Sorbonne Université, Institut Du Cerveau-Paris Brain Institute-ICM, Inserm U1127, CNRS UMR 7225, Paris, France
| | - Marc Schneeberger
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA.
- Wu Tsai Institute for Mind and Brain, Yale University, New Haven, CT, USA.
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Ishikawa H, Shindo A, Mizutani A, Tomimoto H, Lo EH, Arai K. A brief overview of a mouse model of cerebral hypoperfusion by bilateral carotid artery stenosis. J Cereb Blood Flow Metab 2023; 43:18-36. [PMID: 36883344 PMCID: PMC10638994 DOI: 10.1177/0271678x231154597] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 12/23/2022] [Accepted: 01/04/2023] [Indexed: 03/09/2023]
Abstract
Vascular cognitive impairment (VCI) refers to all forms of cognitive disorder related to cerebrovascular diseases, including vascular mild cognitive impairment, post-stroke dementia, multi-infarct dementia, subcortical ischemic vascular dementia (SIVD), and mixed dementia. Among the causes of VCI, more attention has been paid to SIVD because the causative cerebral small vessel pathologies are frequently observed in elderly people and because the gradual progression of cognitive decline often mimics Alzheimer's disease. In most cases, small vessel diseases are accompanied by cerebral hypoperfusion. In mice, prolonged cerebral hypoperfusion is induced by bilateral carotid artery stenosis (BCAS) with surgically implanted metal micro-coils. This cerebral hypoperfusion BCAS model was proposed as a SIVD mouse model in 2004, and the spreading use of this mouse SIVD model has provided novel data regarding cognitive dysfunction and histological/genetic changes by cerebral hypoperfusion. Oxidative stress, microvascular injury, excitotoxicity, blood-brain barrier dysfunction, and secondary inflammation may be the main mechanisms of brain damage due to prolonged cerebral hypoperfusion, and some potential therapeutic targets for SIVD have been proposed by using transgenic mice or clinically used drugs in BCAS studies. This review article overviews findings from the studies that used this hypoperfused-SIVD mouse model, which were published between 2004 and 2021.
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Affiliation(s)
- Hidehiro Ishikawa
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Akihiro Shindo
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Akane Mizutani
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Hidekazu Tomimoto
- Department of Neurology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Eng H Lo
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - Ken Arai
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
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Tang D, Tang Q, Huang W, Zhang Y, Tian Y, Fu X. Fasting: From Physiology to Pathology. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204487. [PMID: 36737846 PMCID: PMC10037992 DOI: 10.1002/advs.202204487] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 01/06/2023] [Indexed: 06/18/2023]
Abstract
Overnutrition is a risk factor for various human diseases, including neurodegenerative diseases, metabolic disorders, and cancers. Therefore, targeting overnutrition represents a simple but attractive strategy for the treatment of these increasing public health threats. Fasting as a dietary intervention for combating overnutrition has been extensively studied. Fasting has been practiced for millennia, but only recently have its roles in the molecular clock, gut microbiome, and tissue homeostasis and function emerged. Fasting can slow aging in most species and protect against various human diseases, including neurodegenerative diseases, metabolic disorders, and cancers. These centuried and unfading adventures and explorations suggest that fasting has the potential to delay aging and help prevent and treat diseases while minimizing side effects caused by chronic dietary interventions. In this review, recent animal and human studies concerning the role and underlying mechanism of fasting in physiology and pathology are summarized, the therapeutic potential of fasting is highlighted, and the combination of pharmacological intervention and fasting is discussed as a new treatment regimen for human diseases.
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Affiliation(s)
- Dongmei Tang
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy, West China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengduSichuan610041China
| | - Qiuyan Tang
- Neurology Department of Integrated Traditional Chinese and Western Medicine, School of Clinical MedicineChengdu University of Traditional Chinese MedicineChengduSichuan610075China
| | - Wei Huang
- West China Centre of Excellence for PancreatitisInstitute of Integrated Traditional Chinese and Western MedicineWest China‐Liverpool Biomedical Research CentreWest China HospitalSichuan UniversityChengduSichuan610041China
| | - Yuwei Zhang
- Division of Endocrinology and MetabolismWest China HospitalSichuan UniversityChengduSichuan610041China
| | - Yan Tian
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengduSichuan610041China
| | - Xianghui Fu
- Division of Endocrinology and Metabolism, National Clinical Research Center for Geriatrics, State Key Laboratory of Biotherapy and Cancer Center, West China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengduSichuan610041China
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Time restricted feeding is associated with poor performance in specific cognitive domains of Suburb-Dwelling older Chinese. Sci Rep 2023; 13:387. [PMID: 36617577 PMCID: PMC9826783 DOI: 10.1038/s41598-022-23931-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 11/07/2022] [Indexed: 01/09/2023] Open
Abstract
The purpose of this study was to investigate the association between time restricted feeding (TRF) and different areas of cognitive function in the elderly in Chinese communities. This study consisted of 1353 community-dwelling Chinese older adults aged 60 years and older in Chongming area, Shanghai (563 males; the mean age, 73.38 ± 6.16 years). Mild cognitive impairment (MCI) and six different cognitive domains was assessed by the Chinese-version of Mini Mental State Examination (MMSE). Recording the eating time of each meal through oral inquiry to calculate the time window between the first meal and the last meal of the average day. Participants with an eating time window duration of more than 10 h were then identified, as well as those with eating time restricted to less than 10 h (TRF). Our study found that TRF may be associated with a higher incidence rate of cognitive impairment. TRF only limited the eating time window and did not change the frequency of participants' dietary intake. We used a linear regression model to study the association of TRF with cognitive function. After adjusting for confounding variables, the results showed that TRF was related to MMSE score (P < 0.001), "Orientation to place" (P < 0.001) and "Attention/calculation" (P < 0.001) functions. Among Chinese older community-dwellers, TRF was associated with a higher prevalence of CI and negatively correlated with the "Orientation to place" and "attention/calculation" functions.
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Moretti R, Giuffré M, Crocè LS, Gazzin S, Tiribelli C. Nonalcoholic Fatty Liver Disease and Altered Neuropsychological Functions in Patients with Subcortical Vascular Dementia. J Pers Med 2022; 12:jpm12071106. [PMID: 35887603 PMCID: PMC9323787 DOI: 10.3390/jpm12071106] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/20/2022] [Accepted: 07/01/2022] [Indexed: 02/06/2023] Open
Abstract
NAFLD is the most common cause of abnormality in liver function tests. NAFLD is considered a potential cardiovascular risk factor and is linked to cardiovascular risk factors such as obesity, hypertension, type 2 diabetes, and dyslipidemia. Few previous studies have investigated whether NAFLD could be independently associated with cognitive impairment. The current study aims to find a possible role of NAFLD in the development of subcortical vascular dementia (sVaD). We considered NAFLD as a possible independent vascular risk factor or, considering its metabolic role, associated with other commonly accepted sVaD risk factors, i.e., lack of folate, vitamin B12, and vitamin D-OH25, and increased levels of homocysteine. We studied 319 patients diagnosed with sVaD. All patients underwent an abdominal ultrasound examination to classify steatosis into four levels (1-none up to 4-severe). sVaD patients were divided into two groups according to the presence or absence of NAFLD. Our results demonstrated a strong correlation between NAFLD and sVaD. Patients with the two comorbidities had worse neuropsychological outcomes and a worse metabolic profile. We also found a robust relationship between NAFLD and severe vitamin B12, folate, vitamin D hypovitaminosis, and higher hyperhomocysteinemia levels. This way, it is evident that NAFLD contributes to a more severe metabolic pathway. However, the strong relationship with the three parameters (B12, folate and vitamin D, and homocysteinemia) suggests that NAFLD can contribute to a proinflammatory condition.
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Affiliation(s)
- Rita Moretti
- Department of Medical, Surgical, and Health Sciences, University of Trieste, 34149 Trieste, Italy; (R.M.); (L.S.C.)
| | - Mauro Giuffré
- Department of Medical, Surgical, and Health Sciences, University of Trieste, 34149 Trieste, Italy; (R.M.); (L.S.C.)
- Italian Liver Foundation, Centro Studi Fegato, 34149 Trieste, Italy; (S.G.); (C.T.)
- Correspondence: ; Tel.: +39-0403-994-044
| | - Lory Saveria Crocè
- Department of Medical, Surgical, and Health Sciences, University of Trieste, 34149 Trieste, Italy; (R.M.); (L.S.C.)
- Italian Liver Foundation, Centro Studi Fegato, 34149 Trieste, Italy; (S.G.); (C.T.)
| | - Silvia Gazzin
- Italian Liver Foundation, Centro Studi Fegato, 34149 Trieste, Italy; (S.G.); (C.T.)
| | - Claudio Tiribelli
- Italian Liver Foundation, Centro Studi Fegato, 34149 Trieste, Italy; (S.G.); (C.T.)
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Chen S, Ali I, Li X, Long D, Zhang Y, Long R, Huang X. Shifts in Fecal Metabolite Profiles Associated With Ramadan Fasting Among Chinese and Pakistani Individuals. Front Nutr 2022; 9:845086. [PMID: 35600819 PMCID: PMC9113920 DOI: 10.3389/fnut.2022.845086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/23/2022] [Indexed: 11/13/2022] Open
Abstract
The human gut microbiota has been proposed to serve as a multifunctional organ in host metabolism, contributing effects to nutrient acquisition, immune response, and digestive health. Fasting during Ramadan may alter the composition of gut microbiota through changes in dietary behavior, which ultimately affects the contents of various metabolites in the gut. Here, we used liquid chromatography–mass spectrometry-based metabolomics to investigate the composition of fecal metabolites in Chinese and Pakistani individuals before and after Ramadan fasting. Principal component analysis showed distinct separation of metabolite profiles among ethnic groups as well as between pre- and post-fasting samples. After Ramadan fasting, the Chinese and Pakistani groups showed significant differences in their respective contents of various fecal metabolites. In particular, L-histidine, lycofawcine, and cordycepin concentrations were higher after Ramadan fasting in the Chinese group, while brucine was enriched in the Pakistani group. The KEGG analysis suggested that metabolites related to purine metabolism, 2-oxocarboxylic acid metabolism, and lysine degradation were significantly enriched in the total subject population pre-fasting vs. post-fasting comparisons. Several bacterial taxa were significantly correlated with specific metabolites unique to each ethnic group, suggesting that changes in fecal metabolite profiles related to Ramadan fasting may be influenced by associated shifts in gut microbiota. The fasting-related differences in fecal metabolite profile, together with these group-specific correlations between taxa and metabolites, support our previous findings that ethnic differences in dietary composition also drive variation in gut microbial composition and diversity. This landscape view of interconnected dietary behaviors, microbiota, and metabolites contributes to the future development of personalized, diet-based therapeutic strategies for gut-related disorders.
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Affiliation(s)
- Siyu Chen
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Ikram Ali
- School of Public Health, Lanzhou University, Lanzhou, China
- College of Ecology, Lanzhou University, Lanzhou, China
| | - Xin Li
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Danfeng Long
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Ying Zhang
- School of Public Health, Lanzhou University, Lanzhou, China
| | - Ruijun Long
- College of Ecology, Lanzhou University, Lanzhou, China
- Ruijun Long
| | - Xiaodan Huang
- School of Public Health, Lanzhou University, Lanzhou, China
- *Correspondence: Xiaodan Huang
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Cao S, Li M, Sun Y, Wu P, Yang W, Dai H, Guo Y, Ye Y, Wang Z, Xie X, Chen X, Liang W. Intermittent fasting enhances hippocampal NPY expression to promote neurogenesis after traumatic brain injury. Nutrition 2022; 97:111621. [PMID: 35255397 DOI: 10.1016/j.nut.2022.111621] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Interventions for preventing cognitive dysfunction after traumatic brain injury (TBI) are limited. Given that adult hippocampal neurogenesis after brain injury contributes to cognitive recovery, and hippocampal neurogenesis is potentially affected by nutritional factors, the aim of this study was to examine whether fasting could promote hippocampal neurogenesis and thus ameliorate the cognitive defects after TBI. METHODS The present study used 8- to 10-wk-old C57 BL/6 N mice weighing 23 g, half males and half females. The mice were randomly assigned to each group, with 10 to 18 mice per group. All mice were housed in an approved animal facility with a 12-h light/dark cycle. In the metabolic study (food intake, body weight, blood glucose, triacylglycerol, total cholesterol, and β-hydroxybutyric acid ), 54 mice (male:female = 1:1) were randomized to the ad libitum (AL) group (n = 18) and the intermittent fasting (IF) group (n = 36). In the neurogenesis study, 45 mice (male:female = 1:1) were randomized to AL (n = 18), IF (n = 9), IF + scramble (n = 9), and the IF + neuropeptide Y (NPY)_siRNA (n = 9) groups. In the Morris water maze test, 48 mice (male:female = 1:1) were randomized to AL (n = 12), IF (n = 12), IF + scramble (n = 12), and the IF + NPY_siRNA (n = 12) groups. RESULTS We showed that a 1-mo-long IF regimen enhanced the proliferation of neural stem cells in the subgranular zone of the hippocampus 3 d after TBI, in addition to improving the cognitive performance in the Morris water maze test. Furthermore, an increase in the hippocampal NPY expression was detected in the IF group after the injury, compared with the mice fed AL, and local knockdown of NPY in vivo attenuated the effects of IF on TBI. CONCLUSIONS These findings suggest that IF promotes hippocampal neurogenesis after TBI by a mechanism that involves enhancement of NPY expression, to alleviate cognitive dysfunction caused by injury.
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Affiliation(s)
- Shuqiang Cao
- Department of Forensic Genetics, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Manrui Li
- Department of Forensic Genetics, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Yuwen Sun
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Peiyan Wu
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Wenjie Yang
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Hao Dai
- Department of Forensic Pathology and Forensic Clinical Medicine, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China
| | - Yadong Guo
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Yi Ye
- Department of Forensic Toxicological Analysis, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, Sichuan, China
| | - Zheng Wang
- Institute of Forensic Medicine, West China School of Basic Science and Forensic Medicine, Sichuan University, Chengdu, China
| | - Xiaoqi Xie
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Xiameng Chen
- Department of Forensic Pathology and Forensic Clinical Medicine, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China.
| | - Weibo Liang
- Department of Forensic Genetics, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, China.
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