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Wang W, Zhang J, Li Y, Su S, Wei L, Li L, Hu R. Lactoferrin alleviates chronic low‑grade inflammation response in obese mice by regulating intestinal flora. Mol Med Rep 2024; 30:138. [PMID: 38873986 PMCID: PMC11200051 DOI: 10.3892/mmr.2024.13262] [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: 11/09/2023] [Accepted: 03/21/2024] [Indexed: 06/15/2024] Open
Abstract
Chronic low‑grade inflammation defines obesity as a metabolic disorder. Alterations in the structure of gut flora are strongly associated with obesity. Lactoferrin (LF) has a biological function in regulating intestinal flora. The present study aimed to investigate the therapeutic and anti‑-inflammatory effects of LF in obese mice based on intestinal flora. A total of 30 C57BL/6 mice were divided into three groups consisting of 10 mice each. Subsequently, one group was fed a normal diet (Group K), another group was fed a high‑fat diet (Group M) and the remaining group switched from regular drinking to drinking 2% LF water (Group Z2) after 2 weeks of high‑fat diet; all mice were fed for 12 weeks. After the experiment, the mouse blood lipid and lipopolysaccharide levels, levels of inflammatory factors and intestinal tight junction proteins were assessed. Mouse stool samples were analyzed using 16S ribosomal RNA sequencing. The results showed that LF reduced serum total cholesterol, triglycerides and low‑density lipoprotein levels, elevated high‑density lipoprotein levels, suppressed metabolic endotoxemia and attenuated chronic low‑grade inflammatory responses in obese mice. In addition, LF upregulated zonula occludens‑1 and occludin protein expression levels in the intestine, thereby improving intestinal barrier integrity. LF altered the intestinal microbial structure of obese mice, reduced the ratio of Firmicutes and an elevated ratio of Bacteroidota, modifying the bacterial population to the increased relative abundance of Alistipes, Acidobacteriota, Psychrobacter and Bryobacter.
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Affiliation(s)
- Wuji Wang
- Basic Medical College, Inner Mongolia Medical University, Hohhot, Inner Mongolia Autonomous Region 010100, P.R. China
| | - Jing Zhang
- Basic Medical College, Inner Mongolia Medical University, Hohhot, Inner Mongolia Autonomous Region 010100, P.R. China
| | - Yanyi Li
- Nursing College, Inner Mongolia Medical University, Hohhot, Inner Mongolia Autonomous Region 010100, P.R. China
| | - Si Su
- Mongolian Medicine College, Inner Mongolia Medical University, Hohhot, Inner Mongolia Autonomous Region 010100, P.R. China
| | - Lisi Wei
- Mongolian Medicine College, Inner Mongolia Medical University, Hohhot, Inner Mongolia Autonomous Region 010100, P.R. China
| | - Li Li
- Basic Medical College, Inner Mongolia Medical University, Hohhot, Inner Mongolia Autonomous Region 010100, P.R. China
| | - Rilebagen Hu
- Mongolian Medicine College, Inner Mongolia Medical University, Hohhot, Inner Mongolia Autonomous Region 010100, P.R. China
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2
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Fathi MA, Abdelsalam AM, Elnagar W, Elwan H, Elnesr SS. Effect of in ovo lactoferrin injection in Fayoumi chicken eggs on immune response and some physiological parameters in posthatch chicks. J Anim Physiol Anim Nutr (Berl) 2024; 108:395-402. [PMID: 37908179 DOI: 10.1111/jpn.13901] [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: 09/11/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 11/02/2023]
Abstract
The effects of in ovo lactoferrin (Lf) injection on some physiological parameters and immune response of posthatch chicks were investigated. Live embryonated Fayoumi chicken eggs (n = 600) were randomly allocated into four groups. The first group as a control was noninjected eggs, the second group was only injected with 0.1 mL of NaCl 0.75% solution, and the third and fourth groups were injected with 50 and 100 µL Lf dissolved in 0.1 mL saline solution respectively. The eggs were injected on Day 15 of incubation in the amnion. The results illustrated that the hatchability of eggs in two Lf groups was significantly higher than in the control, NaCl groups. The residual yolk in chicks injected with Lf (100 µL/egg) was significantly lower than the control group (p < 0.05). In ovo Lf injection improved lipid profile, liver function, antioxidant indices, blood haematology, serum immunoglobulins and jejunum histomorphometry compared to the control group (p < 0.05). In ovo injection of Lf decreased significantly (p < 0.001) of pathogenic bacteria in residual yolk such as Salmonella, Shigella and Coliform compared to the control group. In conclusion, in ovo Lf injection can improve the hatchability, lipid profile, immune response and antioxidant indices and decline pathogens in the residual yolk, thus boosting the health status of newly hatched Fayoumi chicks.
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Affiliation(s)
- Mohamed A Fathi
- Agricultural Research Centre, Animal Production Research Institute, Giza, Egypt
| | - Adel M Abdelsalam
- Agricultural Research Centre, Animal Production Research Institute, Giza, Egypt
| | - Waleed Elnagar
- Agricultural Research Centre, Animal Production Research Institute, Giza, Egypt
| | - Hamada Elwan
- Animal and Poultry Production Department, Faculty of Agriculture, Minia University, El-Minya, Egypt
| | - Shaaban S Elnesr
- Department of Poultry Production, Faculty of Agriculture, Fayoum University, Fayoum, Egypt
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3
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Boachie J, Zammit V, Saravanan P, Adaikalakoteswari A. Metformin Inefficiency to Lower Lipids in Vitamin B12 Deficient HepG2 Cells Is Alleviated via Adiponectin-AMPK Axis. Nutrients 2023; 15:5046. [PMID: 38140305 PMCID: PMC10745523 DOI: 10.3390/nu15245046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/25/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
Background: Prolonged metformin treatment decreases vitamin B12 (B12) levels, whereas low B12 is associated with dyslipidaemia. Some studies have reported that metformin has no effect on intrahepatic triglyceride (TG) levels. Although AMP-activated protein kinase (AMPK) activation via adiponectin lowers hepatic TG content, its role in B12 deficiency and metformin has not been explored. We investigated whether low B12 impairs the beneficial effect of metformin on hepatic lipid metabolism via the AMPK-adiponectin axis. Methods: HepG2 was cultured using custom-made B12-deficient Eagle's Minimal Essential Medium (EMEM) in different B12-medium concentrations, followed by a 24-h metformin/adiponectin treatment. Gene and protein expressions and total intracellular TG were measured, and radiochemical analysis of TG synthesis and seahorse mitochondria stress assay were undertaken. Results: With low B12, total intracellular TG and synthesized radiolabelled TG were increased. Regulators of lipogenesis, cholesterol and genes regulating fatty acids (FAs; TG; and cholesterol biosynthesis were increased. FA oxidation (FAO) and mitochondrial function were decreased, with decreased pAMPKα and pACC levels. Following metformin treatment in hepatocytes with low B12, the gene and protein expression of the above targets were not alleviated. However, in the presence of adiponectin, intrahepatic lipid levels with low B12 decreased via upregulated pAMPKα and pACC levels. Again, combined adiponectin and metformin treatment ameliorated the low B12 effect and resulted in increased pAMPKα and pACC, with a subsequent reduction in lipogenesis, increased FAO and mitochondrion function. Conclusions: Adiponectin co-administration with metformin induced a higher intrahepatic lipid-lowering effect. Overall, we emphasize the potential therapeutic implications for hepatic AMPK activation via adiponectin for a clinical condition associated with B12 deficiency and metformin treatment.
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Affiliation(s)
- Joseph Boachie
- Division of Metabolic and Vascular Health, Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, University Hospital-Walsgrave Campus, Coventry CV2 2DX, UK; (J.B.); (V.Z.); (P.S.)
| | - Victor Zammit
- Division of Metabolic and Vascular Health, Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, University Hospital-Walsgrave Campus, Coventry CV2 2DX, UK; (J.B.); (V.Z.); (P.S.)
| | - Ponnusamy Saravanan
- Division of Metabolic and Vascular Health, Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, University Hospital-Walsgrave Campus, Coventry CV2 2DX, UK; (J.B.); (V.Z.); (P.S.)
- Diabetes Centre, George Eliot Hospital NHS Trust, College Street, Nuneaton CV10 7DJ, UK
- Populations, Evidence and Technologies, Division of Health Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7HL, UK
| | - Antonysunil Adaikalakoteswari
- Division of Metabolic and Vascular Health, Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, University Hospital-Walsgrave Campus, Coventry CV2 2DX, UK; (J.B.); (V.Z.); (P.S.)
- Department of Bioscience, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK
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Ianiro G, Niro A, Rosa L, Valenti P, Musci G, Cutone A. To Boost or to Reset: The Role of Lactoferrin in Energy Metabolism. Int J Mol Sci 2023; 24:15925. [PMID: 37958908 PMCID: PMC10650157 DOI: 10.3390/ijms242115925] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
Many pathological conditions, including obesity, diabetes, hypertension, heart disease, and cancer, are associated with abnormal metabolic states. The progressive loss of metabolic control is commonly characterized by insulin resistance, atherogenic dyslipidemia, inflammation, central obesity, and hypertension, a cluster of metabolic dysregulations usually referred to as the "metabolic syndrome". Recently, nutraceuticals have gained attention for the generalized perception that natural substances may be synonymous with health and balance, thus becoming favorable candidates for the adjuvant treatment of metabolic dysregulations. Among nutraceutical proteins, lactoferrin (Lf), an iron-binding glycoprotein of the innate immune system, has been widely recognized for its multifaceted activities and high tolerance. As this review shows, Lf can exert a dual role in human metabolism, either boosting or resetting it under physiological and pathological conditions, respectively. Lf consumption is safe and is associated with several benefits for human health, including the promotion of oral and gastrointestinal homeostasis, control of glucose and lipid metabolism, reduction of systemic inflammation, and regulation of iron absorption and balance. Overall, Lf can be recommended as a promising natural, completely non-toxic adjuvant for application as a long-term prophylaxis in the therapy for metabolic disorders, such as insulin resistance/type II diabetes and the metabolic syndrome.
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Affiliation(s)
- Giusi Ianiro
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (G.I.); (A.N.); (G.M.)
| | - Antonella Niro
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (G.I.); (A.N.); (G.M.)
| | - Luigi Rosa
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (L.R.); (P.V.)
| | - Piera Valenti
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (L.R.); (P.V.)
| | - Giovanni Musci
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (G.I.); (A.N.); (G.M.)
| | - Antimo Cutone
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (G.I.); (A.N.); (G.M.)
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Li Y, Feng Z, Wu T, You H, Wang W, Liu X, Ding L. Quinoa Peptides Alleviate Obesity in Mice Induced by a High-Fat Diet via Regulating of the PPAR-α/γ Signaling Pathway and Gut Microbiota. Mol Nutr Food Res 2023; 67:e2300258. [PMID: 37759395 DOI: 10.1002/mnfr.202300258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/21/2023] [Indexed: 09/29/2023]
Abstract
SCOPE The obesity epidemic continues to be a major global public health threat with limited effective treatments. Peptides are a group of promising bioactive molecules. Both in vivo and in vitro studies have demonstrated that quinoa has potential prebiotic benefits. Thus, the present study aims to investigate the influence of quinoa peptides (QP) consumption on obesity and its underlying mechanisms in high-fat diet (HFD)-induced mice. METHODS AND RESULTS QP (1000 mg kg-1 day-1 ) is administered to HFD mice for 8 weeks, and is found to significantly reduce the body weight, and plasma levels of triacylglycerol (TG) and total cholesterol (TC) compare to the HFD group. In addition, QP significantly decreases lipid accumulation in the liver caused by HFD. The liver transcriptome analysis shows that the alleviation of QP on obesity is related to the PPAR signaling pathway. QP upregulates the expressions of PPAR-α and its related genes and downregulates the expressions of PPAR-γ and its downstream genes. Furthermore, QP remodels the community composition of gut microbiota by lowering the ratio of Firmicutes c Bacteroidetes (F/B). CONCLUSION These findings suggest that QP consumption alleviates HFD-induced obesity by regulating the PPAR-α/γ signaling pathway in the liver and community structure of gut microbiota.
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Affiliation(s)
- Yiju Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhi Feng
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Tianliang Wu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Haixi You
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Wei Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Long Ding
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
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Xu J, Lao J, Jiang Q, Lin W, Chen X, Zhu C, He S, Xie W, Wang F, Yang B, Liu Y. Associations between Milk Intake and Sleep Disorders in Chinese Adults: A Cross-Sectional Study. Nutrients 2023; 15:4079. [PMID: 37764862 PMCID: PMC10536886 DOI: 10.3390/nu15184079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/10/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
We aimed to examine the association of milk intake with sleep disorders and their specific indicators. The current study included 768 adults aged 28-95 from Wenling, China. Milk intake was assessed using a food frequency questionnaire with ten food items, while sleep disorders were measured using the Pittsburgh Sleep Quality Index (PSQI), with higher scores indicating poorer sleep. The participants were divided into two groups according to the average intake of milk per week: rare intake (≤62.5 mL/week) and regular intake (>62.5 mL/week). Primary measurements were multivariate-adjusted odds ratios (ORs) with 95% confidence intervals (CIs) for the prevalence of sleep disorders concerning regular milk intake compared with rare intake. In secondary analyses, linear regression analyses were performed to assess the effects of milk intake on sleep disorders and their specific dimensions. Regular intake of milk did not have a significant association with sleep disorders compared with rare intake (adjusted OR: 0.72, 95%; CI: 0.51, 1.03), but this association was found to be pronounced with sleep disturbances (OR: 0.49, 95%; CI: 0.28, 0.87). Increased intake of milk was significantly associated with the lower scores of PSQI for sleep quality (β: -0.045, 95%; CI: -0.083, -0.007) and sleep disturbances (β: -0.059, 95%; CI: -0.090, -0.029), respectively. When stratified by age and gender, the benefits of milk intake for sleep disorders and sleep disturbances were more significant in older adults (≥65) and men than in younger persons and women. In summary, regular milk intake benefits sleep quality, which may contribute to nutritional psychiatric support for prevention against sleep disorders.
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Affiliation(s)
- Jinzhong Xu
- Department of Clinical Pharmacy, Affiliated Wenling Hospital, Wenzhou Medical University, Wenling 317500, China;
| | - Jiaying Lao
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China; (J.L.); (X.C.); (C.Z.); (S.H.); (W.X.)
| | - Qingxi Jiang
- Department of Preventive Medicine, School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China;
| | - Wenhui Lin
- Cardiovascular Medicine, Affiliated Wenling Hospital, Wenzhou Medical University, Wenling 317500, China;
| | - Xiyi Chen
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China; (J.L.); (X.C.); (C.Z.); (S.H.); (W.X.)
| | - Chongrong Zhu
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China; (J.L.); (X.C.); (C.Z.); (S.H.); (W.X.)
| | - Shencong He
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China; (J.L.); (X.C.); (C.Z.); (S.H.); (W.X.)
| | - Wenbo Xie
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China; (J.L.); (X.C.); (C.Z.); (S.H.); (W.X.)
| | - Fan Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China;
| | - Bo Yang
- Department of Preventive Medicine, School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China;
| | - Yanlong Liu
- Zhejiang Provincial Clinical Research Center for Mental Disorders, The Affiliated Wenzhou Kangning Hospital, Wenzhou Medical University, Wenzhou 325000, China
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Abdel-Wahhab KG, Ashry M, Hassan LK, Gadelmawla MHA, Elqattan GM, El-Fakharany EM, Mannaaa FA. Nano-chitosan/bovine lactoperoxidase and lactoferrin formulation modulates the hepatic deterioration induced by 7,12-dimethylbenz[a]anthracene. COMPARATIVE CLINICAL PATHOLOGY 2023. [DOI: 10.1007/s00580-023-03510-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 07/31/2023] [Indexed: 11/09/2023]
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8
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Li L, Ma C, Hurilebagen, Yuan H, Hu R, Wang W, Weilisi. Effects of lactoferrin on intestinal flora of metabolic disorder mice. BMC Microbiol 2022; 22:181. [PMID: 35869430 PMCID: PMC9306164 DOI: 10.1186/s12866-022-02588-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 06/29/2022] [Indexed: 11/10/2022] Open
Abstract
To study the mechanism of lactoferrin (LF) regulating metabolic disorders in nutritionally obese mice through intestinal microflora. Twenty-one male C57BL/6 mice were randomly divided into 3 groups: control group, model group and LF treatment group. The mice in control group were fed with maintenance diet and drank freely. The mice in model group were fed with high fat diet and drank freely. The mice in LF treatment group were fed with high fat diet and drinking water containing 2% LF freely. Body weight was recorded every week. Visceral fat ratio was measured at week 12. Blood glucose and serum lipid level were detected by automatic biochemical analyzer. The gut microbiota of mice was examined using 16 s rRNA sequencing method. LF treatment significantly reduced the levels of visceral adipose ratio, blood glucose, triglyceride, total cholesterol and low-density lipoprotein cholesterol (LDL-C) in high-fat diet mice (p < 0.05). It can be seen that drinking water with 2% LF had a significant impact on metabolic disorders. At the same time, the Firmicutes/Bacteroidetes ratio(F/B) of LF treated mice was decreased. The abundance of Deferribacteres, Oscillibacter, Butyricicoccus, Acinetobacter and Mucispirillum in LF treatment group were significantly decreased, and the abundance of Dubosiella was significantly increased (p < 0.05). In the LF-treated group, the expression levels of glucose metabolism genes in gut microbiota were increased, and the expression levels of pyruvate metabolism genes were decreased. It can be seen that metabolic disorders were related to intestinal flora. In conclusion, LF regulates metabolic disorders by regulating intestinal flora.
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Mayneris-Perxachs J, Moreno-Navarrete JM, Fernández-Real JM. The role of iron in host-microbiota crosstalk and its effects on systemic glucose metabolism. Nat Rev Endocrinol 2022; 18:683-698. [PMID: 35986176 DOI: 10.1038/s41574-022-00721-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/01/2022] [Indexed: 11/09/2022]
Abstract
Iron is critical for the appearance and maintenance of life on Earth. Almost all organisms compete or cooperate for iron acquisition, demonstrating the importance of this essential element for the biological and physiological processes that are key for the preservation of metabolic homeostasis. In humans and other mammals, the bidirectional interactions between the bacterial component of the gut microbiota and the host for iron acquisition shape both host and microbiota metabolism. Bacterial functions influence host iron absorption, whereas the intake of iron, iron deficiency and iron excess in the host affect bacterial biodiversity, taxonomy and function, resulting in changes in bacterial virulence. These consequences of the host-microbial crosstalk affect systemic levels of iron, its storage in different tissues and host glucose metabolism. At the interface between the host and the microbiota, alterations in the host innate immune system and in circulating soluble factors that regulate iron (that is, hepcidin, lipocalin 2 and lactoferrin) are associated with metabolic disease. In fact, patients with obesity-associated metabolic dysfunction and insulin resistance exhibit dysregulation in iron homeostasis and alterations in their gut microbiota profile. From an evolutionary point of view, the pursuit of two important nutrients - glucose and iron - has probably driven human evolution towards the most efficient pathways and genes for human survival and health.
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Affiliation(s)
- Jordi Mayneris-Perxachs
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - José María Moreno-Navarrete
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - José Manuel Fernández-Real
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain.
- Department of Medicine, Universitat de Girona, Girona, Spain.
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Xu SF, Pang ZQ, Fan YG, Zhang YH, Meng YH, Bai CY, Jia MY, Chen YH, Wang ZY, Guo C. Astrocyte-specific loss of lactoferrin influences neuronal structure and function by interfering with cholesterol synthesis. Glia 2022; 70:2392-2408. [PMID: 35946355 DOI: 10.1002/glia.24259] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 07/26/2022] [Accepted: 07/29/2022] [Indexed: 11/07/2022]
Abstract
Growing evidence indicates that circulating lactoferrin (Lf) is implicated in peripheral cholesterol metabolism disorders. It has emerged that the distribution of Lf changes in astrocytes of aging brains and those exhibiting neurodegeneration; however, its physiological and/or pathological role remains unknown. Here, we demonstrate that astrocyte-specific knockout of Lf (designated cKO) led to decreased body weight and cognitive abnormalities during early life in mice. Accordingly, there was a reduction in neuronal outgrowth and synaptic structure in cKO mice. Importantly, Lf deficiency in the primary astrocytes led to decreased sterol regulatory element binding protein 2 (Srebp2) activation and cholesterol production, and cholesterol content in cKO mice and/or in astrocytes was restored by exogenous Lf or a Srebp2 agonist. Moreover, neuronal dendritic complexity and total dendritic length were decreased after culture with the culture medium of the primary astrocytes derived from cKO mice and that this decrease was reversed after cholesterol supplementation. Alternatively, these alterations were associated with an activation of AMP-activated protein kinase (AMPK) and inhibition of SREBP2 nuclear translocation. These data suggest that astrocytic Lf might directly or indirectly control in situ cholesterol synthesis, which may be implicated in neurodevelopment and several neurological diseases.
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Affiliation(s)
- Shuang-Feng Xu
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
| | - Zhong-Qiu Pang
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
| | - Yong-Gang Fan
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
- Health Sciences Institute, Key Laboratory of Major Chronic Diseases of Nervous System, China Medical University, Shenyang, China
| | - Yan-Hui Zhang
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
- Health Sciences Institute, Key Laboratory of Major Chronic Diseases of Nervous System, China Medical University, Shenyang, China
| | - Yu-Han Meng
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
| | - Chen-Yang Bai
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
| | - Meng-Yu Jia
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
| | - Yan-Hong Chen
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
| | - Zhan-You Wang
- Health Sciences Institute, Key Laboratory of Major Chronic Diseases of Nervous System, China Medical University, Shenyang, China
| | - Chuang Guo
- College of Life and Health Sciences, Institute of Neuroscience, Northeastern University, Shenyang, China
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Chen R, Huang L, Zheng W, Zhang M, Xin Z, Liu L, Chen Z. Lactoferrin ameliorates myocardial fibrosis by inhibiting inflammatory response via the AMPK/NF-κB pathway in aged mice. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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12
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Mabasa L, Kotze A, Shabalala S, Kimani C, Gabuza K, Johnson R, Sangweni NF, Maharaj V, Muller CJF. Sclerocarya birrea (Marula) Extract Inhibits Hepatic Steatosis in db/db Mice. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:3782. [PMID: 35409465 PMCID: PMC8998011 DOI: 10.3390/ijerph19073782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/16/2022] [Accepted: 03/18/2022] [Indexed: 12/18/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a spectrum of hepatic metabolic perturbations ranging from simple steatosis to steatohepatitis, cirrhosis and hepatocellular carcinoma. Currently, lifestyle modifications to reduce weight gain are considered the most effective means of preventing and treating the disease. The aim of the present study was to determine the therapeutic benefit of Sclerocarya birrea (Marula leaf extract, MLE) on hepatic steatosis. Obese db/db mice were randomly stratified into the obese control, metformin (MET) or MLE-treated groups. Mice were treated daily for 29 days, at which point all mice were euthanized and liver samples were collected. Hematoxylin and eosin staining was used for histological assessment of the liver sections, while qRT-PCR and Western blot were used to determine hepatic mRNA and protein expression, respectively. Thereafter, the association between methylenetetrahydrofolate reductase (Mthfr a key enzyme in one-carbon metabolism and DNA-methylation-induced regulation of gene transcription) and lipogenic genes was evaluated using Pearson's correlation coefficient. Mice treated with MLE presented with significantly lower body and liver weights as compared with the obese control and MET-treated mice (p ≤ 0.05). Further, MLE treatment significantly inhibited hepatic steatosis as compared with the obese control and MET-treated mice (p ≤ 0.05). The reduced lipid accumulation was associated with low expression of fatty acid synthase (Cpt1; p ≤ 0.05) and an upregulation of the fatty acid oxidation gene, carnitine palmitoyltransferase (Cpt1; p ≤ 0.01), as compared with the obese control mice. Interestingly, MLE treatment improved the correlation between Mthfr and Cpt1 mRNA expression (r = 0.72, p ≤ 0.01). Taken together, the results suggest that Marula leaf extracts may inhibit hepatic steatosis by influencing the association between Mthfr and genes involved in hepatic lipid metabolism. Further studies are warranted to assess DNA methylation changes in lipid metabolism genes.
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Affiliation(s)
- Lawrence Mabasa
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (SAMRC), Tygerberg 7505, South Africa
| | - Anri Kotze
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (SAMRC), Tygerberg 7505, South Africa
- Centre for Cardiometabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
| | - Samukelisiwe Shabalala
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (SAMRC), Tygerberg 7505, South Africa
- Division of Medical Microbiology, Department of Pathology and Laboratory-Medicine, Faculty of Health Sciences, Walter Sisulu University, Mthatha 5117, South Africa
| | - Clare Kimani
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (SAMRC), Tygerberg 7505, South Africa
- Division of Clinical Pharmacology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
- Institute of Primate Research, P.O. Box 24481, Karen, Nairobi 00502, Kenya
| | - Kwazi Gabuza
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (SAMRC), Tygerberg 7505, South Africa
| | - Rabia Johnson
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (SAMRC), Tygerberg 7505, South Africa
- Centre for Cardiometabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
| | - Nonhlakanipho F Sangweni
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (SAMRC), Tygerberg 7505, South Africa
- Centre for Cardiometabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
| | - Vinesh Maharaj
- Department of Chemistry, University of Pretoria, Pretoria 0001, South Africa
| | - Christo J F Muller
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council (SAMRC), Tygerberg 7505, South Africa
- Centre for Cardiometabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3880, South Africa
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Du Y, Li D, Chen J, Li YH, Zhang Z, Hidayat K, Wan Z, Xu JY, Qin LQ. Lactoferrin improves hepatic insulin resistance and pancreatic dysfunctions in high-fat diet and streptozotocin-induced diabetic mice. Nutr Res 2022; 103:47-58. [DOI: 10.1016/j.nutres.2022.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 03/16/2022] [Accepted: 03/20/2022] [Indexed: 11/28/2022]
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Aoyama Y, Naiki-Ito A, Xiaochen K, Komura M, Kato H, Nagayasu Y, Inaguma S, Tsuda H, Tomita M, Matsuo Y, Takiguchi S, Takahashi S. Lactoferrin Prevents Hepatic Injury and Fibrosis via the Inhibition of NF-κB Signaling in a Rat Non-Alcoholic Steatohepatitis Model. Nutrients 2021; 14:42. [PMID: 35010924 PMCID: PMC8746867 DOI: 10.3390/nu14010042] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 12/12/2022] Open
Abstract
Non-alcoholic steatohepatitis (NASH) can cause liver cirrhosis and hepatocellular carcinoma (HCC), with cases increasing worldwide. To reduce the incidence of liver cirrhosis and HCC, NASH is targeted for the development of treatments, along with viral hepatitis and alcoholic hepatitis. Lactoferrin (LF) has antioxidant, anti-cancer, and anti-inflammatory activities. However, whether LF affects NASH and fibrosis remains unelucidated. We aimed to clarify the chemopreventive effect of LF on NASH progression. We used a NASH model with metabolic syndrome established using connexin 32 (Cx32) dominant negative transgenic (Cx32ΔTg) rats. Cx32ΔTg rats (7 weeks old) were fed a high-fat diet and intraperitoneally injected with dimethylnitrosamine (DMN). Rats were divided into three groups for LF treatment at 0, 100, or 500 mg/kg/day for 17 weeks. Lactoferrin significantly protected steatosis and lobular inflammation in Cx32ΔTg rat livers and attenuated bridging fibrosis or liver cirrhosis induced by DMN. By quantitative RT-PCR, LF significantly down-regulated inflammatory (Tnf-α, Il-6, Il-18, and Il-1β) and fibrosis-related (Tgf-β1, Timp2, and Col1a1) cytokine mRNAs. Phosphorylated nuclear factor (NF)-κB protein decreased in response to LF, while phosphorylated JNK protein was unaffected. These results indicate that LF might act as a chemopreventive agent to prevent hepatic injury, inflammation, and fibrosis in NASH via NF-κB inactivation.
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Affiliation(s)
- Yoshinaga Aoyama
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.A.); (K.X.); (M.K.); (H.K.); (Y.N.); (S.I.); (S.T.)
- Department of Gastroenterological Surgery, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.M.); (S.T.)
| | - Aya Naiki-Ito
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.A.); (K.X.); (M.K.); (H.K.); (Y.N.); (S.I.); (S.T.)
| | - Kuang Xiaochen
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.A.); (K.X.); (M.K.); (H.K.); (Y.N.); (S.I.); (S.T.)
| | - Masayuki Komura
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.A.); (K.X.); (M.K.); (H.K.); (Y.N.); (S.I.); (S.T.)
| | - Hiroyuki Kato
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.A.); (K.X.); (M.K.); (H.K.); (Y.N.); (S.I.); (S.T.)
| | - Yuko Nagayasu
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.A.); (K.X.); (M.K.); (H.K.); (Y.N.); (S.I.); (S.T.)
| | - Shingo Inaguma
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.A.); (K.X.); (M.K.); (H.K.); (Y.N.); (S.I.); (S.T.)
| | - Hiroyuki Tsuda
- Nanotoxicology Project, Nagoya City University, Nagoya 467-8603, Japan;
| | | | - Yoichi Matsuo
- Department of Gastroenterological Surgery, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.M.); (S.T.)
| | - Shuji Takiguchi
- Department of Gastroenterological Surgery, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.M.); (S.T.)
| | - Satoru Takahashi
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1-Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (Y.A.); (K.X.); (M.K.); (H.K.); (Y.N.); (S.I.); (S.T.)
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Li D, Hu Z, He Q, Guo Y, Chong Y, Xu J, Qin L. Lactoferrin Alleviates Acute Alcoholic Liver Injury by Improving Redox-Stress Response Capacity in Female C57BL/6J Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14856-14867. [PMID: 34873911 DOI: 10.1021/acs.jafc.1c06813] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lactoferrin (Lf) can attenuate alcoholic liver injury (ALI) in male mice; however, the effects of Lf on acute ALI in female mice are still unknown. Female C57BL/6J mice were randomly divided into four groups and fed with different diets for 4 weeks: an AIN-93G diet for control (CON) and ethanol (EtOH) groups; an AIN-93G diet with 0.4 and 4% casein replaced by Lf for low-dose Lf (LLf) and high-dose Lf (HLf) groups. Acute ALI was induced by intragastric administration of ethanol (4.8 g/kgbw) every 12 h continuously for three times. HLf had obvious alleviating effects on acute ALI. Lf pretreatment did not affect hepatic alcohol metabolism key enzymes. Meanwhile, the ethanol-induced hepatic reactive oxygen species level increase was not ameliorated by Lf. Metabolomics and bioinformatics analysis results suggested an important role of redox-stress response capacity (RRC). Western blots showed HLf-promoted AKT and AMP-activated protein kinase activations and upregulated Nrf2 and LC3-II expressions, which was associated with RRC improvement. In summary, HLf could prevent acute ALI in female mice, and RRC likely played an important role.
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Affiliation(s)
- Deming Li
- Department of Nutrition and Food Hygiene, School of Public Health, Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, China
| | - Zhiqiang Hu
- Department of Nutrition and Food Hygiene, School of Public Health, Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, China
| | - Qian He
- Department of Nutrition and Food Hygiene, School of Public Health, Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, China
| | - Yaxin Guo
- Department of Nutrition and Food Hygiene, School of Public Health, Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, China
| | - Yu Chong
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, China
| | - Jiaying Xu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, China
| | - Liqiang Qin
- Department of Nutrition and Food Hygiene, School of Public Health, Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu 215123, China
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16
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Mu J, Zhang J, Zhou X, Zalan Z, Hegyi F, Takács K, Ibrahim A, Awad S, Wu Y, Zhao X, Du M. Effect of Lactobacillus plantarum KFY02 isolated from naturally fermented yogurt on the weight loss in mice with high-fat diet-induced obesity via PPAR-α/γ signaling pathway. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104264] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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17
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Superti F. Lactoferrin from Bovine Milk: A Protective Companion for Life. Nutrients 2020; 12:nu12092562. [PMID: 32847014 PMCID: PMC7551115 DOI: 10.3390/nu12092562] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 02/06/2023] Open
Abstract
Lactoferrin (Lf), an iron-binding multifunctional glycoprotein belonging to the transferrin family, is present in most biological secretions and reaches particularly high concentrations in colostrum and breast milk. A key function of lactoferrin is non-immune defence and it is considered to be a mediator linking innate and adaptive immune responses. Lf from bovine milk (bLf), the main Lf used in human medicine because of its easy availability, has been designated by the United States Food and Drug Administration as a food additive that is generally recognized as safe (GRAS). Among the numerous protective activities exercised by this nutraceutical protein, the most important ones demonstrated after its oral administration are: Antianemic, anti-inflammatory, antimicrobial, immunomodulatory, antioxidant and anticancer activities. All these activities underline the significance in host defence of bLf, which represents an ideal nutraceutical product both for its economic production and for its tolerance after ingestion. The purpose of this review is to summarize the most important beneficial activities demonstrated following the oral administration of bLf, trying to identify potential perspectives on its prophylactic and therapeutic applications in the future.
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Affiliation(s)
- Fabiana Superti
- National Centre for Innovative Technologies in Public Health, National Institute of Health, Viale Regina Elena 299, 00161 Rome, Italy
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18
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Guo C, Xue H, Guo T, Zhang W, Xuan WQ, Ren YT, Wang D, Chen YH, Meng YH, Gao HL, Zhao P. Recombinant human lactoferrin attenuates the progression of hepatosteatosis and hepatocellular death by regulating iron and lipid homeostasis in ob/ob mice. Food Funct 2020; 11:7183-7196. [PMID: 32756704 DOI: 10.1039/d0fo00910e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lactoferrin (Lf), an iron-binding glycoprotein, has been shown to possess antioxidant and anti-inflammatory properties and exert modulatory effects on lipid homeostasis and non-alcoholic fatty liver disease (NAFLD), but our understanding of its regulatory mechanisms is limited and inconsistent. We used leptin-deficient (ob/ob) mice as the rodent model of NAFLD, and administered recombinant human Lf (4 mg per kg body weight) or control vehicle by intraperitoneal injection to evaluate the hepatoprotective effects of Lf. After 40 days of treatment with Lf, insulin sensitivity and hepatic steatosis in ob/ob mice were significantly improved with the down-regulation of sterol regulatory element binding protein-2 (SREBP2), indicating an improvement in hepatic lipid metabolism and function. We further explored the mechanism, and found that Lf may increase the hepatocellular iron output by targeting the hepcidin-ferroportin (FPn) axis, and then maintains the liver oxidative balance through a nonenzymatic antioxidant system, ultimately suppressing the death of hepatocytes. In addition, the cytoprotective role of Lf may be associated with the inhibition of endoplasmic reticulum (ER) stress and inflammation, promotion of autophagy of damaged hepatocytes and induction of up-regulation of hypoxia inducible factor-1α/vascular endothelial growth factor (HIF-lα/VEGF) to facilitate liver function recovery. These findings suggest that recombinant human Lf might be a potential therapeutic agent for mitigating or delaying the pathological process of NAFLD.
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Affiliation(s)
- Chuang Guo
- College of Life and Health Sciences, Northeastern University, No. 195, Chuangxin Road, Hunnan District, Shenyang, 110169, China.
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Liu CY, Chang TC, Lin SH, Wu ST, Cha TL, Tsao CW. Metformin Ameliorates Testicular Function and Spermatogenesis in Male Mice with High-Fat and High-Cholesterol Diet-Induced Obesity. Nutrients 2020; 12:nu12071932. [PMID: 32610645 PMCID: PMC7400492 DOI: 10.3390/nu12071932] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 06/25/2020] [Accepted: 06/25/2020] [Indexed: 12/18/2022] Open
Abstract
The aim of this study was to investigate the effects of metformin supplementation on metabolic dysfunction, testicular antioxidant capacity, apoptosis, inflammation and spermatogenesis in male mice with high-fat and high-cholesterol diet-induced obesity. Forty male C57BL/6 mice were fed a normal diet (NC group, n = 10) or a high-fat and high-cholesterol diet (HFC group, n = 30) for 24 weeks, and mice randomly chosen from the HFC group were later treated with metformin for the final 8 weeks of HFC feeding (HFC + Met group, n = 15). Compared with the HFC group, the obese mice supplemented with metformin exhibited improved blood cholesterol, glucose and insulin resistance. The HFC group diminishes in the sperm motility and normal sperm morphology, while the poorer maturity of testicular spermatogenesis was improved by metformin treatment. The HFC group exhibited a higher estradiol level and a lower 17β-HSD protein expression. Further analyses showed that metformin treatment increased the activities of superoxide dismutase, catalase and glutathione peroxidase and reduced lipid peroxidation. Nevertheless, both the HFC and HFC + Met groups exhibited increased expressions of apoptosis and inflammation proteins in the testis. Metformin treatment ameliorated obesity-induced poor testicular spermatogenesis and semen quality through increasing the testosterone level and antioxidant capacity.
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Affiliation(s)
- Chin-Yu Liu
- Department of Nutritional Science, Fu Jen Catholic University, Taipei 242, Taiwan; (C.-Y.L.); (T.-C.C.)
| | - Ting-Chia Chang
- Department of Nutritional Science, Fu Jen Catholic University, Taipei 242, Taiwan; (C.-Y.L.); (T.-C.C.)
| | - Shyh-Hsiang Lin
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan;
- Master of Program of Food Safety, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan
| | - Sheng-Tang Wu
- Division of Urology, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan; (S.-T.W.); (T.-L.C.)
| | - Tai-Lung Cha
- Division of Urology, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan; (S.-T.W.); (T.-L.C.)
| | - Chih-Wei Tsao
- Division of Urology, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan; (S.-T.W.); (T.-L.C.)
- Correspondence:
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Ma M, Duan R, Shen L, Liu M, Ji Y, Zhou H, Li C, Liang T, Li X, Guo L. The lncRNA Gm15622 stimulates SREBP-1c expression and hepatic lipid accumulation by sponging the miR-742-3p in mice. J Lipid Res 2020; 61:1052-1064. [PMID: 32229588 DOI: 10.1194/jlr.ra120000664] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/10/2020] [Indexed: 12/12/2022] Open
Abstract
Excessive lipid deposition is a hallmark of NAFLD. Although much has been learned about the enzymes and metabolites involved in NAFLD, few studies have focused on the role of long noncoding RNAs (lncRNAs) in hepatic lipid accumulation. Here, using in vitro and in vivo models of NAFLD, we found that the lncRNA Gm15622 is highly expressed in the liver of obese mice fed a HFD and in murine liver (AML-12) cells treated with free fatty acids. Investigating the molecular mechanism in the liver-enriched expression of Gm15622 and its effects on lipid accumulation in hepatocytes and on NAFLD pathogenesis, we found that Gm15622 acts as a sponge for the microRNA miR-742-3p. This sponging activity increased the expression of the transcriptional regulator SREBP-1c and promoted lipid accumulation in the liver of the HFD mice and AML-12 cells. Moreover, further results indicated that metformin suppresses Gm15622 and alleviates NAFLD-associated lipid deposition in mice. In conclusion, we have identified an lncRNA Gm15622/miR-742-3p/SREBP-1c regulatory circuit associated with NAFLD in mice, a finding that significantly advances our insight into how lipid metabolism and accumulation are altered in this metabolic disorder. Our results also suggest that Gm15622 may be a potential therapeutic target for managing NAFLD.
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Affiliation(s)
- Minjuan Ma
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China
| | - Rui Duan
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China
| | - Lulu Shen
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China
| | - Mengting Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China
| | - Yaya Ji
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China
| | - Hao Zhou
- Changzhou Institute of Innovation and Development, Nanjing Normal University, Nanjing 210023, China
| | - Changxian Li
- Hepatobiliary Center, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Tingming Liang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, School of Life Science, Nanjing Normal University, Nanjing 210023, China; Changzhou Institute of Innovation and Development, Nanjing Normal University, Nanjing 210023, China. mailto:
| | - Xiangcheng Li
- Hepatobiliary Center, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Li Guo
- Department of Bioinformatics, School of Geographic and Biologic Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
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Urinary Metabolomics Study of the Intervention Effect of Hypoglycemic Decoction on Type 2 Diabetes Mellitus Rats Model. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:1394641. [PMID: 31885637 PMCID: PMC6925725 DOI: 10.1155/2019/1394641] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 09/14/2019] [Accepted: 09/19/2019] [Indexed: 12/31/2022]
Abstract
The hypoglycemic decoction (HD) is a traditional Chinese medicine (TCM) preparation for the treatment of diabetes mellitus (DM), with a remarkable therapeutic effect. However, its mechanism of action is still unclear at the metabolic level. In this study, the biochemical markers from type 2 DM (T2DM) rats, induced by a high-sugar and high-fat diet combined with streptozotocin (STZ), were detected. The metabolomics-based analysis using high-performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS) was conducted to evaluate urine samples from control, model, metformin, and HD groups. After oral administration of HD for 28 days, the general state, weight, fasting blood glucose (FBG), blood lipid level, oral glucose tolerance test (OGTT), fasting insulin (FINS), insulin sensitivity index (ISI), and homeostasis model assessment of insulin resistance (HOMA-IR) were significantly improved (P < 0.01). The western blotting showed that HD can enhance the protein expression of glucose transporter 4 (GLUT4) and adenosine monophosphate-activated protein kinase (AMPK). The metabolomics results revealed that after treatment with HD, the levels of L-carnitine, 1-methyladenosine, 1-methylhistamine, and 3-indoleacrylic acid were upregulated and the levels of riboflavin, phenylalanine, atrolactic acid, 2-oxoglutarate, citrate, isocitrate, cortisol, and glucose were downregulated. The main mechanism may be closely related to the regulation of the tricarboxylic acid (TCA) cycle, phenylalanine metabolism, glyoxylate metabolism, and dicarboxylate metabolism. Additionally, it was also found that HD can regulate the protein expression of GLUT4 and AMPK to interfere with TCA cycle and carbohydrate metabolism to treat T2DM.
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Ling CJ, Xu JY, Li YH, Tong X, Yang HH, Yang J, Yuan LX, Qin LQ. Lactoferrin promotes bile acid metabolism and reduces hepatic cholesterol deposition by inhibiting the farnesoid X receptor (FXR)-mediated enterohepatic axis. Food Funct 2019; 10:7299-7307. [PMID: 31626262 DOI: 10.1039/c9fo01616c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Lactoferrin (LF) is a multifunctional glycoprotein that can regulate lipid metabolism, lower cholesterol, reduce body weight, and prevent atherosclerosis. Bile acid (BA) metabolism plays an important role in removing excess cholesterol from the body. However, studies on the effects of LF on BA metabolism are limited and inconsistent. METHODS Male C57BL/6J mice aged 6-8 weeks were fed with a normal diet (control group), high-fat/high-cholesterol diet containing cholate (HFCCD group), or HFCCD and 1.0% LF in drinking water (LF group) for 8 weeks. Serum and hepatic lipid profiles, and glucose tolerance were measured. Fecal BA composition was determined through ultra-high performance liquid chromatography-tandem mass spectrometry. The gene expression of BA synthase in the liver and farnesoid X receptor (FXR)-mediated BA negative feedback regulation pathway in the liver and ileum were analyzed via RNA analysis. RESULTS HFCCD resulted in abnormal cholesterol levels in the serum and liver. LF intervention significantly increased the serum high-density lipoprotein cholesterol level by 24.9% and decreased the hepatic total cholesterol content by 26%. LF treatment significantly increased the BA content per gram by 109.8%, the total amount of BA excretion by 153.5% and conjugated BAs by 87.6% in the feces. Furthermore, LF upregulated the expression of the hepatic sterol 12α-hydroxylase (CYP8B1) gene, which expresses important enzymes in the classical pathway of BA synthesis, and the bile acid-CoA amino acid N-acetyltransferase (BAAT) gene, which is responsible for the formation of conjugated BAs. The FXR-mediated pathways in the enterohepatic axis, including FXR, fibroblast growth factor 15, and fibroblast growth factor receptor 4, were inhibited by LF. CONCLUSIONS LF ameliorated hepatic cholesterol deposition in mice fed with a high-fat and high cholesterol diet containing cholate. LF elevated the conjugated BA level, inhibited the ileum FXR and FXR-mediated enterohepatic axis, and increased BA synthesis and excretion.
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Affiliation(s)
- Chen-Jie Ling
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou 215123, China.
| | - Jia-Ying Xu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China.
| | - Yun-Hong Li
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou 215123, China.
| | - Xing Tong
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou 215123, China.
| | - Huan-Huan Yang
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou 215123, China.
| | - Jing Yang
- Department of Clinical Nutrition, The First Affiliated Hospital of Soochow University, Suzhou 215123, China.
| | - Lin-Xi Yuan
- Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou 215123, China.
| | - Li-Qiang Qin
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou 215123, China.
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