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Miyata S, Fan L, Kambe J, Qasimi MI, Takemoto S, Ito M, Li C, Yamamoto Y, Nagaoka K. Influence of repeated mastitis on the milk production and metabolic status in the subsequent lactation period of dairy cattle. Heliyon 2024; 10:e29789. [PMID: 38699047 PMCID: PMC11064075 DOI: 10.1016/j.heliyon.2024.e29789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 04/04/2024] [Accepted: 04/15/2024] [Indexed: 05/05/2024] Open
Abstract
Recurrent mastitis poses a common challenge on dairy farms. While the impact of repeated mastitis within the same lactation has been investigated, the difference from one lactation to the next, particularly concerning the change of milk and blood metabolites, remains unclear. This study aimed to examine the difference in milk yield, milk composition, and metabolic status in the subsequent lactation between healthy and repeated mastitis in the previous lactation. The study population comprised 50 cows chosen from 400 cows, with 25 having no history of mastitis and 25 experiencing mastitis more than three times during the last lactation. Following dry-off and calving, all cows initiated a new lactation, during which no mastitis was diagnosed until the sample collection period. In the group exposed to repeated mastitis, a significant decrease in milk fat levels was observed in the subsequent lactation, while no change was observed in milk somatic cell count (SCC). Milk collected from cows that had experienced repeated mastitis in the previous lactation exhibited significant increases in the levels of free amino acids, namely valine, proline, and alanine. However, no difference in plasma levels of these amino acids was noted. These results indicate that individuals exposed to repeated mastitis have persistent milk quality changes even after dry-off. Biomarker analysis suggested that the milk valine and proline showed a moderate biomarker potential on Kappa coefficients to characterize cows that have experienced repeated mastitis. Furthermore, the results of biomarker combinations for valine and proline provided the highest specificity (100 %), positive likelihood ratio (infinity), and substantial biomarker potential on kappa coefficients (0.68). These findings significantly enhance our understanding of the pathobiology and etiology of recurrent mastitis and provide a biomarker to characterize cows that have experienced repeated mastitis in the past.
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Affiliation(s)
- Shiho Miyata
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Lijie Fan
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Jun Kambe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Mohammad Ibrahim Qasimi
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Satoshi Takemoto
- Central Research Institute for Feed and Livestock, ZEN-NOH (National Federation of Agricultural Cooperative Associations), Ibaraki, 319-0205, Japan
| | - Masahiko Ito
- Department of Virology and Parasitology, Hamamatsu University School of Medicine, Shizuoka, 431-3192, Japan
| | - Chunmei Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yuki Yamamoto
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
| | - Kentaro Nagaoka
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, 183-8509, Japan
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Kambe J, Miyata S, Li C, Yamamoto Y, Nagaoka K. Xanthine-induced deficits in hippocampal behavior and abnormal expression of hemoglobin genes. Behav Brain Res 2023; 449:114476. [PMID: 37148916 DOI: 10.1016/j.bbr.2023.114476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/08/2023]
Abstract
The prevalence of mental disorders such as depression and anxiety is high and often comorbid with other diseases. Chronic stress is a common risk factor for these disorders, but the mechanisms behind their development are not yet fully understood. Metabolomics has revealed a close association between purine and pyrimidine metabolism and depression and anxiety, with increased levels of serum xanthine observed in both humans and mice. Xanthine is known as purine metabolism, and this compound shows several biological activities, but the impact of xanthine on our brain function is still unclear. The hippocampus, which plays a crucial role in memory and learning, is also implicated in the pathophysiology of depression and anxiety. Here, we investigated the effects of xanthine intraperitoneal administration on spatial memory and anxiety-like behavior in mice. The findings indicated that xanthine administration induced a deficit of hippocampus-dependent spatial memory and a tendency to anxiety-like behavior in mice. RNA-seq analysis showed that xanthine administration upregulated hemoglobin (Hb) genes involved in oxygen transport in the hippocampus. The upregulated Hb genes occurred in the neuronal cells, and in vitro experiments revealed that both Hba-a1 derived from mice and HBA2 derived from humans were upregulated by xanthine treatment. These observations suggest that the xanthine-induced Hb in the hippocampus could be related to spatial memory deficit and anxiety. This study sheds light on the direct effects of xanthine on the brain and its potential role in the development of depression and anxiety symptoms caused by chronic stress.
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Affiliation(s)
- Jun Kambe
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Shiho Miyata
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Chunmei Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yuki Yamamoto
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kentaro Nagaoka
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan.
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Qasimi MI, Fukuzawa S, Suenaga K, Kambe J, Li C, Tomonaga S, Kawase T, Tsukahara T, Hirayama K, Inoue R, Yamamoto Y, Nagaoka K. L-amino acid oxidase-1 is involved in the gut-liver axis by regulating 5-aminolevulinic acid production in mice. J Vet Med Sci 2023. [PMID: 37150613 DOI: 10.1292/jvms.23-0080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023] Open
Abstract
L-amino acid oxidase (LAAO) is a metabolic enzyme that converts L-amino acids into ketoacids, ammonia, and hydrogen peroxide (H2O2). The generated H2O2 has previously been shown to have antibacterial and gut microbiota-modulatory properties in LAO1 knock-out (KO) mice. Since most microbial metabolites reach the liver through the portal vein, we examined gut-liver interactions in LAO1 KO mice. We found lower total cholesterol levels, higher glutamic pyruvic transaminase (GPT) levels in the serum, and higher pro-inflammatory cytokine mRNA expression in the liver tissue. In wild-type (WT) mice, LAO1 was expressed in gut tissues (ileum and colon). Microbiome analysis revealed that the abundance of some bacteria was altered in LAO1 KO mice. However, short-chain fatty acid (SCFAs) levels in cecal feces and gut permeability did not change. Fecal microbiota transplantation (FMT) revealed that feces from LAO1 KO mice slightly stimulated pro-inflammatory cytokine expression in the liver. During metabolomic analysis, 5-Aminolevulinic acid (5-ALA) was the only metabolite found to be significantly upregulated in the portal and abdominal veins of the LAO1 KO mice. Intraperitoneal administration of 5-ALA to WT mice significantly increased IL-6 mRNA expression in the liver. These observations suggest that gut LAO1 plays a role in regulating 5-ALA production and that a high level of 5-ALA stimulates the liver to increase pro-inflammatory cytokine expression by disrupting LAO1 in mice.
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Affiliation(s)
- Mohammad Ibrahim Qasimi
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology
| | - Susumu Fukuzawa
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology
| | - Ken Suenaga
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology
| | - Jun Kambe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology
| | - Chunmei Li
- College of Animal Science and Technology, Nanjing Agricultural University
| | - Shozo Tomonaga
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
| | | | | | - Kazuhiko Hirayama
- Laboratory of Public Health, Department of Veterinary Medicine, The University of Tokyo
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Applied Biological Science, Setsunan University
| | - Yuki Yamamoto
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology
| | - Kentaro Nagaoka
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology
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Zhang H, Liu H, Kataoka S, Kinukawa M, Uchiyama K, Kambe J, Watanabe G, Jin W, Nagaoka K. L-amino acid oxidase 1 in sperm is associated with reproductive performance in male mice and bulls. Biol Reprod 2021; 104:1154-1161. [PMID: 33590844 DOI: 10.1093/biolre/ioab024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 01/21/2021] [Accepted: 02/12/2021] [Indexed: 11/14/2022] Open
Abstract
Sperm quality is an important indicator of male fertility, and a suitable biomarker enables the selection of high-quality spermatozoa. We previously found that L-amino acid oxidase encoded by the L-amino acid oxidase 1 (Lao1) gene exerts biological roles in the mammary gland and brain by converting specific L-amino acids into keto acids, ammonia, and hydrogen peroxide (H2O2). Here, we describe the role of Lao1 in male reproduction. Lao1-deficient (Lao1-/-) male mice generated fewer pregnant embryos and pups as well as lower ratios of fertilized oocytes and even ovulated number was not different, suggesting that male subfertility caused the smaller litters. We found that LAO1 expressed in acrosomes is associated with high malformation ratios and low viability of Lao1-/- sperm. Wild-type (WT) sperm produced more H2O2 than Lao1-/- sperm, and 10 μM H2O2 restored knockout (KO) sperm viability in vitro. In addition, the sperm ratio of induced acrosome reaction was higher in WT than in Lao1-/- sperm incubated with the calcium ionophore A23187. Moreover, LAO1 expression was abundant in bovine sperm with high fertilization ratios. We concluded that LAO1 localized in the sperm acrosome influences sperm viability and morphology as well as the acrosome reaction, and that LAO1-deficient sperm might cause male subfertility. Thus, LAO1 might serve as a novel marker for selecting high-quality spermatozoa, especially for livestock reproduction.
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Affiliation(s)
- Haolin Zhang
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Laboratory of Animal Physiology, College of Biological Science and Biotechnology, Beijing Forestry University, Beijing, China
| | - Hong Liu
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Sachi Kataoka
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Masashi Kinukawa
- Division of Animal Reproduction, Maebashi Institute of Animal Science, Livestock Improvement Association of Japan (LIAJ), Maebashi, Japan
| | - Kyoko Uchiyama
- Division of Animal Reproduction, Maebashi Institute of Animal Science, Livestock Improvement Association of Japan (LIAJ), Maebashi, Japan
| | - Jun Kambe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Gen Watanabe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Wanzhu Jin
- Institute of Zoology, Chinese Academy of Sciences, Chaoyang, Beijing, China
| | - Kentaro Nagaoka
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Sovijit W, Sovijit W, Ishii Y, Kambe J, Fujita T, Watanabe G, Yamaguchi H, Nagaoka K. Estrogen promotes increased breast cancer cell proliferation and migration through downregulation of CPEB1 expression. Biochem Biophys Res Commun 2020; 534:871-876. [PMID: 33162033 DOI: 10.1016/j.bbrc.2020.10.085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 10/28/2020] [Indexed: 12/31/2022]
Abstract
The polyadenylation element binding protein 1 (CPEB1) plays an important role in the regulation of poly(A) tail length at the 3'UTR of mRNA during transcription. Downregulation of CPEB1 expression, which is associated with the loss of mammary epithelial polarity, has been reported in breast cancer. CPEB1 downregulation leads to an increase in tumor aggressiveness of breast cancer. Breast cancer is also known to be responsive to the treatment with steroid hormones, which promotes cancer development and progression; however, the nature of these associations remains unclear. This study aimed to investigate whether estrogen and progesterone impacted CPEB1 expression in breast cancer in order to regulate cell proliferation and migration. MCF7 cell proliferation was increased in response to estrogen treatment, and estrogen application suppressed the expression of CPEB1 mRNA. Cells treated with estrogen or those depleted for CPEB1 by shRNA showed increased wound healing capacity compared with that of control cells in migration assay. Moreover, we found that CPEB1 level of expression in human breast cancer tissue was low compared with that in the healthy tissue. CPEB1 expression was downregulated in response to estrogen activity and in turn, that caused a significantly induced cell migration in breast cancer cells. This suggests that CPEB1 is one of the estrogen responsive genes, which stimulates breast cancer progression. Increasing and/or maintaining CPEB1 expression level has the potential to control breast cancer behavior.
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Affiliation(s)
- Watcharee Sovijit
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Watcharin Sovijit
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Yuriko Ishii
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Jun Kambe
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Tomoyuki Fujita
- Department of Breast Surgery, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuo, Ami-cho, Ibaraki, 300-0395, Japan
| | - Gen Watanabe
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Hirohito Yamaguchi
- Cancer Research Center, Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Qatar Foundation, P.O Box 34110, Doha, Qatar
| | - Kentaro Nagaoka
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan.
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Kambe J, Sasaki Y, Inoue R, Tomonaga S, Kinjo T, Watanabe G, Jin W, Nagaoka K. Analysis of infant microbiota composition and the relationship with breast milk components in the Asian elephant (Elephas maximus) at the zoo. J Vet Med Sci 2020; 82:983-989. [PMID: 32350162 PMCID: PMC7399312 DOI: 10.1292/jvms.20-0190] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The prevention of diseases through health control is essential at zoos. Here, we investigated the gut microbiota formation during infancy in an Asian elephant and compared the
composition between infant and mother. Besides, we analyzed the components of breast milk and examined the correlation with the infant gut microbiota. Analysis revealed the gut
microbiota of the infant contained high amount of Lactobacillales and its diversity was relatively low compared to that of the mother. We found several milk
components, showed a positive correlation with the change of Lactobacillales. The present study revealed the mechanism of gut microbiota formation during infancy
in an Asian elephant and provides important insights into the health control of Asian elephants in zoos.
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Affiliation(s)
- Jun Kambe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Yu Sasaki
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Applied Biological Sciences, Setsunan University, Osaka 573-0101, Japan
| | - Shozo Tomonaga
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Teruo Kinjo
- Okinawa Zoo Animal Hospital, Okinawa Zoo and Museum, Okinawa 904-0021, Japan
| | - Gen Watanabe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Wanzhu Jin
- Institute of Zoology, Chinese Academy of Sciences, 1-5 Beichen West Road, Chaoyang, Beijing, China
| | - Kentaro Nagaoka
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
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Kambe J, Watcharin S, Makioka-Itaya Y, Inoue R, Watanabe G, Yamaguchi H, Nagaoka K. Heat-killed Enterococcus fecalis (EC-12) supplement alters the expression of neurotransmitter receptor genes in the prefrontal cortex and alleviates anxiety-like behavior in mice. Neurosci Lett 2020; 720:134753. [PMID: 31931033 DOI: 10.1016/j.neulet.2020.134753] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/28/2019] [Accepted: 01/09/2020] [Indexed: 12/26/2022]
Abstract
Gut microbiota plays a crucial role in the maintenance of mental health and influences mental disorders such as depression and anxiety. Several studies have reported the beneficial affects of probiotics in mental health. Heat-killed Enterococcus faecalis strain EC-12 (EC-12), a lactic acid bacterium induces activation of the immune system. However, little is known about the effect of EC-12 on mental health. In the present study, the anti-anxiety effect of EC-12 was elucidated in vivo. Male mice fed on diet supplemented with EC-12 showed decreased anxiety-like behavior in open-field and elevated plus-mazetest. In addition, EC-12 supplementation exhibited an anti-depressive trend in mice subjected to forced swim test. The expression of neurotransmitter receptor genes: Adrb3 and Avpr1a were significantly enhanced in EC-12 supplemented mice compared to that of the control mice. In mice, analyses of gut microbiota composition by next generation sequencing revealed significant increase in Butyricicoccus and Enterococcus with EC-12 supplementation. Significant difference was not detected in the expression of neurotransmitter receptor genes in the prefrontal cortex with the administration of sodium butyrate compared to that of the control group. The mechanism associated with EC-12 mediated reduced anxiety-like behavior and altered gene expression in the brain needs to be further elucidated. Taken together, the present study is the first to report the possibility of exploiting the anti-anxiety effect of heat-killed EC-12 as a novel probiotic to promote mental health.
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Affiliation(s)
- Jun Kambe
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Sovijit Watcharin
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | | | - Ryo Inoue
- Laboratory of Animal Science, Kyoto Prefectural University, Kyoto, Japan
| | - Gen Watanabe
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Hirohito Yamaguchi
- Cancer Research Center, Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Qatar
| | - Kentaro Nagaoka
- Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo, Japan.
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Kambe J, Kakimoto Y, Araki O. Phase reset affects auditory-visual simultaneity judgment. Cogn Neurodyn 2015; 9:487-93. [PMID: 26379799 DOI: 10.1007/s11571-015-9342-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 02/19/2015] [Accepted: 04/17/2015] [Indexed: 11/29/2022] Open
Abstract
We continuously receive the external information from multiple sensors simultaneously. The brain must judge a source event of these sensory informations and integrate them. It is thought that judging the simultaneity of such multisensory stimuli is an important cue when we discriminate whether the stimuli are derived from one event or not. Although previous studies have investigated the correspondence between an auditory-visual (AV) simultaneity perceptions and the neural responses, there are still few studies of this. Electrophysiological studies have reported that ongoing oscillations in human cortex affect perception. Especially, the phase resetting of ongoing oscillations has been examined as it plays an important role in multisensory integration. The aim of this study was to investigate the relationship of phase resetting for the judgment of AV simultaneity judgement tasks. The subjects were successively presented with auditory and visual stimuli with intervals that were controlled as [Formula: see text] and they were asked to report whether they perceived them simultaneously or not. We investigated the effects of the phase of ongoing oscillations on simultaneity judgments with AV stimuli with SOAs in which the detection rate of asynchrony was 50 %. It was found that phase resetting at the beta frequency band in the brain area that related to the modality of the following stimulus occurred after preceding stimulus onset only when the subjects perceived AV stimuli as simultaneous. This result suggested that beta phase resetting occurred in areas that are related to the subsequent stimulus, supporting perception multisensory stimuli as simultaneous.
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Affiliation(s)
- Jun Kambe
- Department of Applied Physics, Tokyo University of Science, Tokyo, Japan
| | - Yuta Kakimoto
- Department of Applied Physics, Tokyo University of Science, Tokyo, Japan
| | - Osamu Araki
- Department of Applied Physics, Tokyo University of Science, Tokyo, Japan
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Abstract
OBJECTIVE To present the case of a Jehovah's Witness with severe anemia and to review the religious philosophy of such patients, the ethical and medicolegal aspects of their care, and the therapeutic options available to clinicians. DATA SOURCES A MEDLINE literature search (1980 to 1992) identified most studies. Other studies were selected from the bibliographies of identified articles. STUDY SELECTION Selection of articles was limited to the history, philosophy, medicolegal and ethical issues, and clinical management of anemic Jehovah's Witnesses; a recent article on recommendations for red cell transfusion was also reviewed. CONCLUSIONS A clear understanding of the philosophy of the Jehovah's Witnesses regarding blood transfusion and of the medicolegal and ethical aspects of their care is essential to clinicians who care for such patients. One must also be aware of the many alternative therapeutic options that can maximize oxygen delivery and minimize oxygen consumption. The insights gained from this review are applicable to any severely anemic patient who refuses blood transfusion.
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Affiliation(s)
- M C Mann
- University of Connecticut Health Center, Farmington
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Kambe J. [Study for the influence of the surfactants on the cornea of the rabbit eye]. Nippon Ganka Gakkai Zasshi 1974; 78:1109-29. [PMID: 4476990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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