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Hashimoto M, Matsuzaki K, Maruyama K, Sumiyoshi E, Hossain S, Wakatsuki H, Kato S, Ohno M, Tanabe Y, Kuroda Y, Yamaguchi S, Kajima K, Ohizumi Y, Shido O. Perilla frutescens seed oil combined with Anredera cordifolia leaf powder attenuates age-related cognitive decline by reducing serum triglyceride and glucose levels in healthy elderly Japanese individuals: a possible supplement for brain health. Food Funct 2022; 13:7226-7239. [PMID: 35722977 DOI: 10.1039/d2fo00723a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have shown that Anredera cordifolia extract improves learning and memory in a senescence-accelerated mouse model, and that α-linolenic acid (ALA)-rich Perilla frutescens seed oil (PO) improves brain function in healthy Japanese adults and elderly individuals. Herein, we present a 12-month, randomised, double-blind, parallel-armed intervention trial examining the effects of PO supplementation alone or in combination with A. cordifolia leaf powder on brain function in healthy elderly Japanese individuals. Participants were randomly divided into two groups: the PO group received 1.47 mL PO (0.88 g ALA) daily via soft gelatine capsules, and the POAC group received 1.47 mL PO and 1.12 g A. cordifolia leaf powder (1.46 mg vitexin and 1.12 mg adenosine) daily. After 12 months of intervention, the POAC group showed generally higher cognitive index scores than the PO group. The beneficial effects of combined supplementation on cognitive function were associated with increased ALA and eicosapentaenoic acid levels in red blood cell plasma membranes, increased serum biological antioxidant potential, and decreased serum triglyceride, glucose, and N-(epsilon)-carboxymethyl-lysine (CML), an advanced glycation end-product and biochemical marker of oxidative stress levels. The effects of combined supplementation on cognitive function also showed a significant negative correlation with serum CML levels after 12 months of intervention. Our findings suggest that combined long-term supplementation with PO and A. cordifolia more effectively ameliorates age-related cognitive decline than PO alone. These findings may serve as a basis for the development of new supplements for brain health. Clinical Trial Registry, UMIN000040863.
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Affiliation(s)
- Michio Hashimoto
- Department of Environmental Physiology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan.
| | - Kentaro Matsuzaki
- Department of Environmental Physiology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan.
| | | | - Eri Sumiyoshi
- Department of Environmental Physiology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan.
| | - Shahdat Hossain
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Harumi Wakatsuki
- Department of Environmental Physiology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan.
| | - Setsushi Kato
- Kato Hospital, Jinjukai Healthcare Corporation, Kawamoto, Shimane, Japan
| | - Miho Ohno
- Kato Hospital, Jinjukai Healthcare Corporation, Kawamoto, Shimane, Japan
| | - Yoko Tanabe
- Department of Environmental Physiology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan.
| | - Yoko Kuroda
- Department of Internal Medicine III, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan
| | | | - Koji Kajima
- Sankyo Holdings Co., Ltd, Fuji, Shizuoka, Japan
| | - Yasushi Ohizumi
- Kansei Fukushi Research Institute, Tohoku Fukushi University, Sendai, Miyagi, Japan
| | - Osamu Shido
- Department of Environmental Physiology, Faculty of Medicine, Shimane University, Izumo, Shimane, Japan.
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A Narrative Review of the Effects of Citrus Peels and Extracts on Human Brain Health and Metabolism. Nutrients 2022; 14:nu14091847. [PMID: 35565814 PMCID: PMC9103913 DOI: 10.3390/nu14091847] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 12/04/2022] Open
Abstract
As life expectancy increases, age-associated diseases such as Alzheimer's disease (AD) become a major health problem. The onset of AD involves neurological dysfunction due to amyloid-β accumulation, tau hyperphosphorylation, oxidative stress, and neuroinflammation in the brain. In addition, lifestyle-related diseases-such as dyslipidemia, diabetes, obesity, and vascular dysfunction-increase the risk of developing dementia. The world population ages, prompting the development of new strategies to maintain brain health and prevent the onset of dementia in older and preclinical patients. Citrus fruits are abundant polymethoxylated flavone and flavanone sources. Preclinical studies reported that these compounds have neuroprotective effects in models of dementia such as AD. Interestingly, clinical and epidemiological studies appear to support preclinical evidence and show improved cognitive function and reduced associated disease risk in healthy individuals and/or patients. This review summarizes the recent evidence of the beneficial effects of citrus peels and extracts on human cognition and related functions.
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Hashimoto M, Matsuzaki K, Maruyama K, Hossain S, Sumiyoshi E, Wakatsuki H, Kato S, Ohno M, Tanabe Y, Kuroda Y, Yamaguchi S, Kajima K, Ohizumi Y, Shido O. Perilla seed oil in combination with the nobiletin-rich ponkan powder enhances cognitive function in healthy elderly Japanese individuals: Possible supplement for brain health in the elderly. Food Funct 2022; 13:2768-2781. [DOI: 10.1039/d1fo03508h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Perilla (Perilla frutescens) seed oil (PO), rich in α-linolenic acid (ALA), can improve cognitive function in healthy elderly Japanese people. Here, supplements containing either PO alone or PO with nobiletin-rich...
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Matsuzaki K, Ohizumi Y. Beneficial Effects of Citrus-Derived Polymethoxylated Flavones for Central Nervous System Disorders. Nutrients 2021; 13:E145. [PMID: 33406641 PMCID: PMC7824236 DOI: 10.3390/nu13010145] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/23/2020] [Accepted: 12/31/2020] [Indexed: 12/14/2022] Open
Abstract
The number of patients with central nervous system disorders is increasing. Despite diligent laboratory and clinical research over the past 30 years, most pharmacologic options for the prevention and long-term treatment of central nervous system disorders and neurodegenerative disorders have been unsuccessful. Therefore, the development of drugs and/or functional foods to prevent the onset of neurodegenerative disorders is highly expected. Several reports have shown that polymethoxylated flavones (PMFs) derived from citrus fruit, such as nobiletin, tangeretin, and 3,3',4',5,6,7,8-heptamethoxyflavone, are promising molecules for the prevention of neurodegenerative and neurological disorders. In various animal models, PMFs have been shown to have a neuroprotective effect and improve cognitive dysfunction with regard to neurological disorders by exerting favorable effects against their pathological features, including oxidative stress, neuroinflammation, neurodegeneration, and synaptic dysfunction as well as its related mechanisms. In this review, we describe the profitable and ameliorating effects of citrus-derived PMFs on cognitive impairment and neural dysfunction in various rat and murine models or in several models of central nervous system disorders and identify their mechanisms of action.
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Affiliation(s)
- Kentaro Matsuzaki
- Department of Environmental Physiology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo 693-8501, Japan
| | - Yasushi Ohizumi
- Kansei Fukushi Research Institute, Tohoku Fukushi University, 6-149-1 Kunimigaoka, Aoba-ku, Sendai 989-3201, Japan
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Iwashita M, Hashizume K, Umehara M, Ishigami T, Onishi S, Yamamoto M, Higashi K, Moribe K. Development of nobiletin–methyl hesperidin amorphous solid dispersion: Novel application of methyl hesperidin as an excipient for hot-melt extrusion. Int J Pharm 2019; 558:215-224. [DOI: 10.1016/j.ijpharm.2018.12.092] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 12/07/2018] [Accepted: 12/27/2018] [Indexed: 01/22/2023]
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Thioredoxin-Interacting Protein (TXNIP) in Cerebrovascular and Neurodegenerative Diseases: Regulation and Implication. Mol Neurobiol 2018; 55:7900-7920. [PMID: 29488135 DOI: 10.1007/s12035-018-0917-z] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 01/21/2018] [Indexed: 02/07/2023]
Abstract
Neurological diseases, including acute attacks (e.g., ischemic stroke) and chronic neurodegenerative diseases (e.g., Alzheimer's disease), have always been one of the leading cause of morbidity and mortality worldwide. These debilitating diseases represent an enormous disease burden, not only in terms of health suffering but also in economic costs. Although the clinical presentations differ for these diseases, a growing body of evidence suggests that oxidative stress and inflammatory responses in brain tissue significantly contribute to their pathology. However, therapies attempting to prevent oxidative damage or inhibiting inflammation have shown little success. Identification and targeting endogenous "upstream" mediators that normalize such processes will lead to improve therapeutic strategy of these diseases. Thioredoxin-interacting protein (TXNIP) is an endogenous inhibitor of the thioredoxin (TRX) system, a major cellular thiol-reducing and antioxidant system. TXNIP regulating redox/glucose-induced stress and inflammation, now is known to get upregulated in stroke and other brain diseases, and represents a promising therapeutic target. In particular, there is growing evidence that glucose strongly induces TXNIP in multiple cell types, suggesting possible physiological roles of TXNIP in glucose metabolism. Recently, a significant body of literature has supported an essential role of TXNIP in the activation of the NOD-like receptor protein (NLRP3)-inflammasome, a well-established multi-molecular protein complex and a pivotal mediator of sterile inflammation. Accordingly, TXNIP has been postulated to reside centrally in detecting cellular damage and mediating inflammatory responses to tissue injury. The majority of recent studies have shown that pharmacological inhibition or genetic deletion of TXNIP is neuroprotective and able to reduce detrimental aspects of pathology following cerebrovascular and neurodegenerative diseases. Conspicuously, the mainstream of the emerging evidences is highlighting TXNIP link to damaging signals in endothelial cells. Thereby, here, we keep the trend to present the accumulative data on CNS diseases dealing with vascular integrity. This review aims to summarize evidence supporting the significant contribution of regulatory mechanisms of TXNIP with the development of brain diseases, explore pharmacological strategies of targeting TXNIP, and outline obstacles to be considered for efficient clinical translation.
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Oba C, Ota M, Nomura K, Fujiwara H, Takito J, Sato Y, Ohizumi Y, Inomata H. Extraction of nobiletin from Citrus Unshiu peels by supercritical fluid and its CRE-mediated transcriptional activity. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 27:33-38. [PMID: 28314477 DOI: 10.1016/j.phymed.2017.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 12/31/2016] [Accepted: 01/29/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Polymethoxyflavone (PMF) is one of bioactive compounds in Citrus Unshiu and included mainly in the peels rather than the fruits, seeds and leaves. HYPOTHESIS/PURPOSE Supercritical CO2 extraction is one candidate for selective extraction of polymethoxyflavone and in this study, supercritical CO2 extraction with/without ethanol entrainer from Citrus Unshiu peels was examined at a temperature of 333K and a pressure of 30MPa. METHODS CRE (cyclic AMP response element)-mediated transcriptional assay was examined by using the extracts from supercritical fluid extraction. RESULTS The results showed that extracts including nobiletin increased with increasing ethanol concentration in supercritical CO2 and the elapsed extraction time. Extracts at ethanol concentration of 5 mol% showed high CRE-mediated transcription activity. This can be caused by activity of the extract including nobiletin in addition to the other methoxylated flavonoid species such as tangeretin. Extracts at ethanol concentration of 50% showed the highest CRE-mediated transcription activity, which can be attributed to flavonoid glycoside such as hesperidin. From our investigations, flavonoid glycoside can be one of promoters of CRE-mediated transcription activity.
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Affiliation(s)
- Chisato Oba
- Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan
| | - Masaki Ota
- Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan.
| | - Koichiro Nomura
- Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan
| | - Hironori Fujiwara
- Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan
| | - Jiro Takito
- Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan
| | - Yoshiyuki Sato
- Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan
| | - Yasushi Ohizumi
- Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan
| | - Hiroshi Inomata
- Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403, Aoba, Aramaki, Aoba-ku, Sendai, 980-8579, Japan
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Miyazaki Y. Immune effects and antiacetylcholinesterase activity of Polygonum hydropiper L. BIOSCIENCE OF MICROBIOTA FOOD AND HEALTH 2016; 35:69-75. [PMID: 27200260 PMCID: PMC4858880 DOI: 10.12938/bmfh.2015-016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 11/11/2015] [Indexed: 12/12/2022]
Abstract
To determine the potential utility of Polygonum hydropiper (tade) as an
anti-dementia functional food, the present study assessed the acetylcholinesterase inhibitory and
anti-inflammatory activities of tade crude extracts in human cells. Crude extracts of
tade were obtained by homogenizing tade in distilled water and then
heating the resulting crude extracts. The hot aqueous extracts were purified by centrifugation and
freeze-dried. The inhibition of acetylcholinesterase (AChE) by tade was investigated
quantitatively by Ellman’s method. Furthermore, the in vitro effects on human leukocytes
(phagocytic activity, phagosome-lysosome fusion, and superoxide anion release) of coating inactive
Staphylococcus aureus cells with tade crude extracts were studied. The
tade crude extracts inhibited AChE activity. Furthermore, they increased phagocytic
activity and phagosome-lysosome fusion in human neutrophils and monocytes in a nominally dose-dependent
manner. However, the tade crude extracts did not alter superoxide anion release
(O2−) from neutrophils. Our results confirmed that crude extracts of P.
hydropiper exhibit antiacetylcholinesterase and immunostimulation activities in
vitro. P. hydropiper thus is a candidate functional food for the prevention of
dementia.
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Affiliation(s)
- Yoshiko Miyazaki
- Department of Food Science and Human Nutrition, Faculty of Agriculture, Ryukoku University, 1-5 Yokotani, SetaOe-cho, Otsu, Shiga 520-2194, Japan
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Takito J, Kimura J, Kajima K, Uozumi N, Watanabe M, Yokosuka A, Mimaki Y, Nakamura M, Ohizumi Y. Nerve growth factor enhances the CRE-dependent transcriptional activity activated by nobiletin in PC12 cells. Can J Physiol Pharmacol 2016; 94:728-33. [PMID: 27128150 DOI: 10.1139/cjpp-2015-0394] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Prevention and treatment of Alzheimer disease are urgent problems for elderly people in developed countries. We previously reported that nobiletin, a poly-methoxylated flavone from the citrus peel, improved the symptoms in various types of animal models of memory loss and activated the cAMP responsive element (CRE)-dependent transcription in PC12 cells. Nobiletin activated the cAMP/PKA/MEK/Erk/MAPK signaling pathway without using the TrkA signaling activated by nerve growth factor (NGF). Here, we examined the effect of combination of nobiletin and NGF on the CRE-dependent transcription in PC12 cells. Although NGF alone had little effect on the CRE-dependent transcription, NGF markedly enhanced the CRE-dependent transcription induced by nobiletin. The NGF-induced enhancement was neutralized by a TrkA antagonist, K252a. This effect of NGF was effective on the early signaling event elicited by nobiletin. These results suggested that there was crosstalk between NGF and nobiletin signaling in activating the CRE-dependent transcription in PC12 cells.
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Affiliation(s)
- Jiro Takito
- a Department of Oral Anatomy and Developmental Biology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo 142-8555, Japan
| | - Junko Kimura
- b Department of Medical Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, Japan
| | - Koji Kajima
- c Sankyo Holdings Co., Ltd., 573-13 Denbou, Fuji-shi, Shizuoka, Japan
| | - Nobuyuki Uozumi
- d Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07 Aobayama, Sendai, Miyagi, Japan
| | - Makoto Watanabe
- e Kansei Fukushi Research Center, Tohoku Fukushi University, 6-149-1 Kunimigaoka, Aoba-ku, Sendai, Miyagi, Japan
| | - Akihito Yokosuka
- f Laboratory of Medicinal Plant Science, School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo, Japan
| | - Yoshihiro Mimaki
- f Laboratory of Medicinal Plant Science, School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo, Japan
| | - Masanori Nakamura
- a Department of Oral Anatomy and Developmental Biology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa, Tokyo 142-8555, Japan
| | - Yasushi Ohizumi
- b Department of Medical Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, Japan.,e Kansei Fukushi Research Center, Tohoku Fukushi University, 6-149-1 Kunimigaoka, Aoba-ku, Sendai, Miyagi, Japan
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