著者
Takaaki Tomofuji Daisuke Ekuni Koichiro Irie Tetsuji Azuma Naofumi Tamaki Takayuki Maruyama Tatsuo Yamamoto Tatsuo Watanabe Manabu Morita
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.32, no.5, pp.343-349, 2011 (Released:2011-10-28)
参考文献数
31
被引用文献数
4 21

Gingival response to periodontal inflammation generates excessive lipid peroxide and such a condition may augment systemic health through increased circulating lipid peroxide. The purpose of the present study was to investigate whether the generation of lipid peroxide in periodontal inflammation could induce tissue injury in the liver, heart, kidney and brain using a rat model. Twelve Wistar rats (8 week-old male) were divided into 2 groups: the periodontal inflammation group, receiving topical application of lipopolysaccharide and proteases to the gingival sulcus for 4 weeks, and the control group using instead pyrogen-free water. After blood samples were collected, specimens from the brain, heart, liver and kidney were resected to determine the concentration of 8-hydroxydeoxyguanosine (an indicator of oxidative DNA damage). Gingival and serum levels for hexanoyl-lysine were measured to evaluate lipid peroxide. Administration of lipopolysaccharide and proteases induced periodontal inflammation, with increasing gingival and serum levels of hexanoyl- lysine. The level of 8-hydroxydeoxyguanosine increased 2.27, 2.01, 1.49 and 1.40 times in mitochondrial DNA from the liver, heart, kidney and brain of rats with periodontal inflammation, respectively. The results reveal that excessive production of lipid peroxide following periodontal inflammation is involved in oxidative DNA damage of the brain, heart, liver and kidney.
著者
Hirotoshi UTSUNOMIYA Tadashi YAMAKAWA Junzo KAMEI Kazuaki KADONOSONO Shun-Ichi TANAKA
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.26, no.5, pp.193-200, 2005 (Released:2005-12-05)
参考文献数
30
被引用文献数
11 19

Dried plums, considered a healthy food in the West and used as medicine in India, contain phenolic compounds with protective actions against age-related diseases. Effects of oral plum ekisu (concentrated juice) on lipid and glucose tolerance were assessed in insulin-resistant obese Wistar fatty rats. Plum ingestion decreased blood glucose (P < 0.05) and plasma triglyceride concentrations (P < 0.01) compared with controls. Plum treatment for 2 weeks reduced areas under the curve (AUCs) for glucose and insulin during a glucose tolerance test. In db/db mice, plum decreased these AUCs, and also blood glucose during an insulin tolerance test. Plum treatment significantly increased plasma adiponectin concentrations and PPARγ mRNA expression in adipose tissue from Wistar fatty rats. Plum thus may increase insulin sensitivity in these rats via adiponectin-related mechanisms.
著者
Miro SMRIGA Toshihiko ANDO Masahisa AKUTSU Yasushi FURUKAWA Kiyoshi MIWA Yasushi MORINAGA
出版者
Biomedical Research Press
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.28, no.2, pp.85-90, 2007 (Released:2007-05-16)
参考文献数
43
被引用文献数
18 23 26

Dietary supplementation with an essential amino acid L-lysine has been shown to reduce chronic anxiety in humans with low dietary intake of L-lysine. A combination of L-lysine and L-arginine has been documented to normalize hormonal stress responses in humans with high trait anxiety. The present study was carried out in one hundred eight healthy Japanese adults. The aim of study was to find out whether a week-long oral treatment with L-lysine (2.64 g per day) and L-arginine (2.64 g per day) reduces trait and stress-induced state anxiety and basal levels of stress hormones. We confirmed that, without regard to gender, the amino acid treatment significantly reduced both trait anxiety and state anxiety induced by cognitive stress battery. In addition, we found that the treatment with L-lysine and L-arginine decreased the basal levels of salivary cortisol and chromogranin-A (a salivary marker of the sympatho-adrenal system) in male subjects. These results of this double-blind, placebo controlled and randomized study confirm the previous findings in humans and animals and point to a combination of L-lysine and L-arginine as a potentially useful dietary intervention in otherwise healthy humans with high subjective levels of mental stress and anxiety.
著者
Isao Nadaoka Masaaki Yasue Yasushi Kitagawa Yoshihiko Koga
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.33, no.3, pp.145-152, 2012 (Released:2012-07-05)
参考文献数
60
被引用文献数
3 7 4

Dried rhizomes of Cimicifuga racemosa (CR), which are known as black cohosh, have been widely used as herbal dietary supplements to treat menopausal symptoms. The present study examined the effect of CR extracts on human psychological and physiological responses to acute stress induced by mental arithmetic tests, by measuring the subjective stress intensity, the brain-wave patterns according to electroencephalography, and the concentrations of salivary chromogranin-A and cortisol. The experiments were performed double-blind and their order was counterbalanced. Treatment with CR significantly attenuated the elevated subjective perception of stress and the increased salivary chromogranin-A levels compared with placebo treatment. CR extract also rapidly recovered the decrease in alpha waveband induced by performing the mental arithmetic task. We therefore propose that CR extracts might be suitable for the prevention and treatment of stressrelated disorders.
著者
Masahiro TODA Kanehisa MORIMOTO Shingo NAGASAWA Kazuyuki KITAMURA
出版者
Biomedical Research Press
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.27, no.1, pp.11-14, 2006 (Released:2006-03-15)
参考文献数
19
被引用文献数
37 37

We assessed the stress relief effect of spa bathing by measuring sensitive salivary stress markers, cortisol and chromogranin A (CgA). From 12 healthy males, saliva samples were collected immediately before and after spa bathing, and 30 min after that. Salivary cortisol and CgA levels were determined by ELISA. Salivary cortisol levels decreased after spa bathing. This tendency was more pronounced in individuals with higher levels of stress. The high-stress group showed lower salivary CgA levels after spa bathing, while the low-stress group higher salivary CgA levels in the same condition. These findings suggest that the spa bathing has a moderate affect on the stress relief.
著者
Mayumi Watanabe Osamu Takano Chikako Tomiyama Hiroaki Matsumoto Takahiro Kobayashi Nobuatsu Urahigashi Nobuatsu Urahigashi Toru Abo
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.33, no.4, pp.243-248, 2012 (Released:2012-09-04)
参考文献数
24
被引用文献数
4 5

Skin rubdown using a dry towel (SRDT) to scrub the whole body is a traditional therapy for health promotion. To investigate its mechanism, 24 healthy male volunteers were studied. Body temperature, pulse rate, red blood cells (RBCs), serum levels of catecholamines and cortisol, blood gases (PO2, sO2, PCO2 and pH), lactate and glucose, and the ratio and number of white blood cells (WBCs) were assessed before and after SRDT. After SRDT, pulse rate and body temperature were increased. PO2, sO2 and pH were also increased and there was no Rouleaux formation by RBCs. Lactate level tended to increase, whereas that of glucose did not. Adrenaline and noradrenaline levels increased, indicating sympathetic nerve (SN) dominance with increase in granulocytes. WBC number and ratio were divided into two groups according to granulocyte ratio (≤ or < 60%) before SRDT: a normal group and a SN group. Only in the SN group did the granulocyte ratio decrease and the lymphocyte ratio and number increase after SRDT. It is suggested that SRDT is a mild aerobic, systemic exercise that might affect the immune system via the autonomic nervous system.
著者
Ken YAMAGUCHI Kenichi URAKAMI Takeshi NAGASHIMA Yuji SHIMODA Shumpei OHNAMI Sumiko OHNAMI Keiichi OHSHIMA Tohru MOCHIZUKI Keiichi HATAKEYAMA Masakuni SERIZAWA Yasuto AKIYAMA Kouji MARUYAMA Hirohisa KATAGIRI Yuji ISHIDA Kaoru TAKAHASHI Seiichiro NISHIMURA Masanori TERASHIMA Taiichi KAWAMURA Yusuke KINUGASA Yushi YAMAKAWA Tetsuro ONITSUKA Yasuhisa OHDE Takashi SUGINO Ichiro ITO Hiroyuki MATSUBAYASHI Yasue HORIUCHI Maki MIZUGUCHI Mutsumi YAMAZAKI Kengo INOUE Kimiko WAKAMATSU Misato SUGIYAMA Katsuhiko UESAKA Masatoshi KUSUHARA
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.37, no.4, pp.259-264, 2016-08-01 (Released:2016-08-20)
参考文献数
25
被引用文献数
2

Using whole exome sequencing data obtained from 1,685 Japanese cancer patients, we examined genetic variations of germline TP53 and found 10 types of non-synonymous single nucleotide variants. In the present study, we focused on 6 patients with germline D49H mutation located in the transactivation domain 2 of p53 protein, since the mutation seemed to be prevalent in cancer patients and to be pathogenic. According to the initial survey for family history of the proband with the germline TP53 D49H mutation, one osteosarcoma patient and his pedigree fulfill the criteria for Li-Fraumeni-like syndrome and the 2009 Chompret criteria for germline TP53 mutation screening. Since this patient possesses double germline mutations of TP53 D49H and A159D, further studies are required to evaluate contribution of the D49H mutation in this morbidity. The remaining 5 patients had family histories of cancer, but none fulfills the criteria either for the Li-Fraumeni/Li-Fraumeni-like syndromes or the 2009 Chompret criteria for germline TP53 mutation screening. It is possible to postulate that the germline TP53 D49H mutation is likely to be low-penetrant in some pedigrees. The present study also indicates that the survey for the germline TP53 mutation plays an important role in clinical practice as it will prevent mistaking cancer patients with unusual heredities for sporadic cases.
著者
Satoshi Haramizu Fuminori Kawabata Koichiro Ohnuki Naohiko Inoue Tatsuo Watanabe Susumu Yazawa Tohru Fushiki
出版者
Biomedical Research Press
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.32, no.4, pp.279-284, 2011 (Released:2011-08-30)
参考文献数
22
被引用文献数
6 9 5

Enhancement of energy expenditure and reducing energy intake are crucial for weight control. Capsiate, a non-pungent capsaicin analog, is known to suppress body fat accumulation and reduce body weight by enhancing of energy expenditure in both mice and humans. However, it is poorly understood whether suppressing body fat accumulation by capsiate administration is equal to exercise or not. The aim of this study is to compare the effects of repeated administration of capsiate and exercise and to investigate the weight rebound after repeated capsiate administration and/or exercise. In the present study, we report that 2 weeks treatment of capsiate and exercise increased energy metabolism and suppressed body fat accumulation during 4 more weeks of ad libitum feeding. The body weight in capsiate and exercise groups was significantly lower than that of control group. The oxygen consumption was significanlty increased in capsiate and exercise groups than in the vehicle administered mice. In addition, the abdominal adipose tissue weight in capsiate and exercise groups was significantly lower than that of control group. These results indicate that suppressing body fat accumulation by capsiate intake is beneficial for maintaining an ideal body weight as exercise.
著者
Fuminori Kawabata Tomoko Tsuji
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.32, no.6, pp.387-393, 2011 (Released:2011-12-25)
参考文献数
14
被引用文献数
3 7

The aim of this study was to determine the effects of dietary supplementation with a combination of fish oil, bilberry extract, and lutein on subjective symptoms of asthenopia in humans by a double- blind, randomized, parallel-group, and placebo-controlled trial. In the Active group, eleven subjects ingested a supplement containing omega-3 fatty acid-rich fish oil (docosahexaenoic acid 783 mg/day, eicosapentaenoic acid 162 mg/day), bilberry extract (anthocyanidin 59 mg/day), and lutein (17.5 mg/day) in soft gel capsule form, every day for 4 weeks. In the Placebo group, nine subjects ingested placebo capsules. Before and after supplementation, subjects completed a questionnaire to determine their asthenopia symptoms and were also assessed for mental fatigue symptom by the visual analog scale (VAS) test. Asthenopia symptoms such as “stiff shoulder, low back pain”, “frustration”, “dry-eye”, and “stuffy head” were improved in the Active group. Furthermore, a score of mental fatigue was improved after 4 weeks of supplementation, and no side effects were observed after the 4-week supplementation and a 2-week washout period in the Active group. These results suggest that dietary supplementation with the combination of omega-3 fatty acid-rich fish oil, bilberry extract, and lutein may safely improve subjective symptoms of asthenopia and mental fatigue in humans.
著者
Mayumi Nagano Kuniyoshi Shimizu Ryuichiro Kondo Chickako Hayashi Daigo Sato Katsuyuki Kitagawa Koichiro Ohnuki
出版者
Biomedical Research Press
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.31, no.4, pp.231-237, 2010 (Released:2010-09-08)
参考文献数
27
被引用文献数
21 26 24

Hericium erinaceus, a well known edible mashroom, has numerous biological activities. Especially hericenones and erinacines isolated from its fruiting body stimulate nerve growth factor (NGF) synthesis, which expects H. erinaceus to have some effects on brain functions and autonomic nervous system. Herein, we investigated the clinical effects of H. erinaceus on menopause, depression, sleep quality and indefinite complaints, using the Kupperman Menopausal Index (KMI), the Center for Epidemiologic Studies Depression Scale (CES-D), the Pittsburgh Sleep Quality Index (PSQI), and the Indefinite Complaints Index (ICI). Thirty females were randomly assigned to either the H. erinaceus (HE) group or the placebo group and took HE cookies or placebo cookies for 4 weeks. Each of the CES-D and the ICI score after the HE intake was significantly lower than that before. In two terms of the ICI, “insentive” and “palpitatio”, each of the mean score of the HE group was significantly lower than the placebo group. “Concentration”, “irritating” and “anxious” tended to be lower than the placebo group. Our results show that HE intake has the possibility to reduce depression and anxiety and these results suggest a different mechanism from NGF-enhancing action of H. erinaceus.
著者
Shimi Rani ROY Jun WANG Md. Rubel RANA Mikiko NAKASHIMA Toshinobu TOKUMOTO
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.38, no.1, pp.79-87, 2017-02-01 (Released:2017-02-24)
参考文献数
25
被引用文献数
1

Oocyte maturation in medaka is induced by the maturation-inducing hormone (MIH) via its membrane receptor. The most likely candidates for the membrane receptor are membrane progestin receptors (mPRs). In order to characterize the mPRα subtype of medaka, a human cell line expressing the mPRα gene of medaka was established and its steroid binding property was assessed. The α subtype exhibited high binding affinity for 17,20β-DHP, the MIH in medaka. Treatment with a morpholino antisense oligonucleotide to mPRα blocked oocyte maturation in vivo. These results suggest that the medaka mPRα protein acts as an intermediary during MIH-induced oocyte maturation in medaka in a manner similar to that described previously for fish species.
著者
Tomomi SATOH-NAKAMURA Nozomu KUROSE Takafumi KAWANAMI Takuji NAKAMURA Haruka IWAO-KAWANAMI Akio NAKAJIMA Miyuki MIKI Tomoyuki SAKAI Yoshimasa FUJITA Masao TANAKA Toshihiro FUKUSHIMA Yasufumi MASAKI
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.36, no.2, pp.143-153, 2015-04-01 (Released:2015-04-16)
参考文献数
43
被引用文献数
3 5 1

Proliferated IgG4+ plasma cells are polyclonal, suggesting that the pathogenesis of IgG4-related disease (IgG4-RD) involves upstream events related to the regulation of IgG4 expansion. We hypothesized that lymphoid follicle formation may play an important role in the pathogenesis of IgG4-RD. Using various antibodies, especially against monocyte, macrophage, and follicular dendritic cell markers, we immunohistochemically assessed the distribution of immune cells in lymphoid follicles. Pathological findings of tissue samples from patients with IgG4-RD (n = 22), reactive hyperplasia (n = 3), multicentric Castleman’s disease (n = 3), and Sjögren’s syndrome (n = 13) were analyzed. CD14-positive lymphoid follicles were observed only in patients with IgG4-RD, and CD14-positive cells were identified as follicular dendritic cells by multicolor immunohistochemistry. There were few differences in the distributions of other cell types between the IgG4-RD and control groups. The presence of CD14+ follicular dendritic cells in lymphoid follicles may play a pathophysiological role in IgG4-RD.
著者
Yuusuke SAITSU Akemi NISHIDE Kenji KIKUSHIMA Kuniyoshi SHIMIZU Koichiro OHNUKI
出版者
Biomedical Research Press
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.40, no.4, pp.125-131, 2019-08-01 (Released:2019-08-14)
参考文献数
42

Hericium erinaceus has been recognized as medical mushroom since ancient time, but its scientific evidence for human health has been still uncertain. In this study, we tested a randomized, double-blind, placebo-controlled parallel-group comparative study to evaluate the improvement of the cognitive functions by taking supplements containing fruiting body of H. erinaceus for 12 weeks. We performed three kinds of tests: Mini Mental State Examination (MMSE), Benton visual retention test, and Standard verbal paired-associate learning test (S-PA). MMSE alone showed that oral intake of H. erinaceus significantly improved cognitive functions and prevented from the deterioration. We speculate that various chemical compounds, including hericenones, in the mushroom have multiple effects to the brain neural networks and improve cognitive functions. Oral intake of H.erinaceus is safe and convenient method for dementia prevention so far.
著者
Eri Matsubara Kuniyoshi Shimizu Mio Fukagawa Yuka Ishizi Chikako Kakoi Tomoko Hatayama Jun Nagano Tsuyoshi Okamoto Koichiro Ohnuki Ryuichiro Kondo
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.33, no.5, pp.299-308, 2012 (Released:2012-11-01)
参考文献数
34
被引用文献数
1 2

The perennial grass Vetiveria zizanioides (vetiver) is mainly cultivated for its fragrant essential oil. Although the components of the oil and their biological activities have been studied extensively, the effect of the volatiles emitted from the roots of V. zizanioides on humans has so far remained unexplored. We investigated the effects of volatile compounds emitted from the cut roots of V. zizanioides (1.0 g, low-dose conditions; 30 g, high-dose conditions) on individuals during a visual display terminal task. Participants who breathed the volatile compounds emitted under low-dose conditions showed faster reaction times and stimulation of sympathetic nerve activity as measured by electrocardiography. These effects were not observed under high-dose conditions. The total amounnt of volatiles emitted during the experiment was 0.25 μg under low-dose conditions and 1.35 &me;g under high-dose conditions. These findings indicate that volatile compounds emitted from the roots of V. zizanioides under low-dose conditions may have helped subjects to maintain performance in visual discrimination tasks while maintaining high sympathetic nerve system activity.
著者
Takashi HAYASHI Satoru TSUJII Tadao IBURI Tamiko TAMANAHA Keiko YAMAGAMI Rieko ISHIBASHI Miyo HORI Shigeko SAKAMOTO Hitoshi ISHII Kazuo MURAKAMI
出版者
Biomedical Research Press
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.28, no.6, pp.281-285, 2007 (Released:2008-01-18)
参考文献数
26
被引用文献数
20 21

To elucidate the sustainable effects of laughter on gene expression, we recruited type 2 diabetic patients who were in-patient for receiving self-management education and examined time-dependent regulation for gene expression by laughter. Two-day experiment was performed. On one day, the patients watched comic video and laughed together with hospital staffs. On the other day, they participated in an inpatient diabetes educational program. Blood samples were collected before and 1.5, 4 h after watching comic video or spending lecture time, and changes in gene expression were comprehensively analyzed by microarray technique. Of the 41,000 genes analyzed, the laughter relatively up-regulated 39 genes, among which, 27 genes were relatively increased in the expression for all the observation period after watching comic video. By functional classification of these genes, 14 genes were found to be related to natural killer cell activity. No genes were included that are directly involved in blood glucose regulation, though successive suppression of postprandial blood glucose levels was observed. These results suggest that the laughter influences the expression of many genes classified into immune responses, and may contribute to amelioration of postprandial blood glucose elevation through a modulation of NK cell activity caused by up-regulation of relating genes.
著者
Yoshinao HOSAKA Sachiko OZOE Rikio KIRISAWA Hiromi UEDA Kazushige TAKEHANA Mamoru YAMAGUCHI
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.27, no.5, pp.233-241, 2006 (Released:2006-11-13)
参考文献数
46
被引用文献数
11 17

The aim of this study was to clarify whether matrix metalloproteinases (MMP-2 and -9: gelatinases) and pro-inflammatory cytokines [tumor necrosis factor (TNF) α and interleukin (IL)-1β] are induced by heat in tendon tissue in vitro and to test the hypothesis that heat exposure causes tendinocytes to synthesize pro-inflammatory cytokines and that synthesis of these cytokines, in turn, leads to up-regulation of synthesis of gelatinases. Isolated tendinocytes from equine superficial digital flexor tendons were cultured and all experiments were performed on cells passaged 3 or 4 times. In the cells exposed to heat (37 to 45°C, 0 to 60 min), the survival rate decreased sharply in a temperature- and time-dependent manner, especially at 42 and 45°C. Cells exposed at 40°C, however, showed little change in survival rate and morphology. Gelatin zymograms revealed that proMMP-2 and -9 were the only two MMPs remaining in the supernatant of the cultured tendinocytes, including that of untreated cells. Addition of TNFα and IL-1β to the culture medium of tendinocytes accelerated proMMP-9 synthesis considerably. Heating the tendinocytes (40°C) led to a three-fold increase in proMMP-9 synthesis in a short time. Only TNFα was detected in tendinocytes after heat exposure for 30 and 60 min. In contrast, IL-1β was under the detectable level in ELISA. Cooling of heat-exposed cells from 40°C to 37°C considerably down-regulated cellular proMMP-9 synthesis. Furthermore, proMMP-9 level was greatly reduced in cells treated at lower temperatures, 20°C and 5°C. These findings support our hypothesis that hyperthermia in the horse tendon induces tendinocytes to synthesize pro-inflammatory cytokines and that the synthesis of these cytokines results in the up-regulation of gelatinases.
著者
Eisuke KAWANO Taku TORIUMI Shinya IGUCHI Daigo SUZUKI Shuichi SATO Masaki HONDA
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.38, no.2, pp.135-147, 2017-04-01 (Released:2017-04-22)
参考文献数
63
被引用文献数
6

We previously generated induced pluripotent stem (iPS) cells from human dental pulp cells of deciduous teeth. Neural crest cells (NCCs) play a vital role in the development of the oral and maxillofacial region. Therefore, NCCs represent a cell source for bone, cartilage, and tooth-related tissue engineering. In this study, we examined whether iPS cells are capable of differentiating into NCCs through modification of the human embryonic stem cell protocol. First, iPS cells were dissociated into single cells and then reaggregated in low-cell-adhesion plates with neural induction medium for 8 days in suspension culture to form neurospheres. The neurospheres were transferred to fibronectin-coated dishes and formed rosette structures. The migrated cells from the rosettes abundantly expressed NCC markers, as evidenced by real-time polymerase chain reaction, immunofluorescence, and flow cytometric analysis. Furthermore, the migrated cells exhibited the ability to differentiate into neural crest lineage cells in vitro. They also exhibited tissue-forming potential in vivo, differentiating into bone and cartilage. Collectively, the migrated cells had similar characteristics to those of NCCs. These results suggest that human dental pulp cell-derived iPS cells are capable of differentiating into NCCs. Therefore, iPS cell-derived NCCs represent cell sources for bone and cartilage tissue engineering.
著者
Tomoyuki SHIBATA Hiromi YAMASHITA Tomohiko KAWAMURA Yasutaka JODAI Takafumi OMORI Kazuya SUMI Yuichiro ICHIKAWA Masaaki OKUBO Takamitsu ISHIZUKA Tomomitsu TAHARA Mitsuo NAGASAKA Yoshihito NAKAGAWA Ichiro HIRATA Naoki OHMIYA Makoto NAKAO
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.37, no.5, pp.305-310, 2016-10-01 (Released:2016-10-25)
参考文献数
38
被引用文献数
1

The aim of this study was to investigate the effect of consuming small amounts of beer or a nonalcoholic beer taste beverage (non-beer) on gastric emptying and the polymorphisms in alcohol metabolism-related enzyme-encoding genes. Twenty male healthy volunteers were questioned regarding their alcohol consumption status, and body measurement was performed. The genetic polymorphisms in ADH1B (rs1229984, Arg47His) and ALDH2 (rs671 Glu487Lys) were analyzed. The subjects consumed 150 mL of beer or non-beer once per week, followed by the ingestion of 200 kcal of the test nutrient containing 13C-acetate 15 min later, after which the subjects’ exhalations were collected up to 120 min. The concentration peak of 13C was measured as Tmax. Diamine oxidase (DAO) activity for the marker of small intestinal function activity was also measured the day after the test. Gastric emptying was significantly slower in the group that consumed a small amount of beer, and in daily beer consumption group, and also in the ADH1B *2/*2, ALDH2 *1/*2 genotypes compared to non-beer drinking group. DAO values were not significantly changed between beer and non-beer group. The consumption of even a small amount of beer and the polymorphisms in ADH1B / ALDH2 affects gastric motility.
著者
Masako YAJIMA Shin-Ichiro KARAKI Takeshi TSURUTA Shunsuke KIMURA Junko NIO-KOBAYASHI Atsukazu KUWAHARA Takaji YAJIMA
出版者
バイオメディカルリサーチプレス
雑誌
Biomedical Research (ISSN:03886107)
巻号頁・発行日
vol.37, no.5, pp.319-328, 2016-10-01 (Released:2016-10-25)
参考文献数
41
被引用文献数
6

Non-neuronal and atropine-sensitive ileal contractile responses to short chain fatty acids (SCFAs) are detected in the neonatal stage, and change with age or inflammatory conditions. However, the roles of luminal SCFAs in developmental changes have not yet been elucidated. We examined ileal contractile responses to SCFAs in mice colonized with different SCFA-producing intestinal microbiota under normal and inflammatory conditions. Using conventional (Conv), germ-free (GF), and gnotobiotic mice infected with Bifidobacterium (GB-bif), Propionibacterium (GB-prop), or Lactobacillus (GB-lact), ileal contractions were measured in 1-day-old neonates and 7-week-old mice using an isotonic transducer. Contractions occurred in all 1-day-old neonates, and were significantly desensitized in the adult stage in the Conv, GB-bif, and GB-prop groups, but not in the GF and GB-lact groups. An injection of lipopolysaccharide frequently restored desensitized contractions; however, the contraction rate did not change in the GF and GB-lact groups. The relative mRNA expression of a SCFA receptor (GPR43) or nicotinic acetylcholine receptor α7 was weaker in the GF group (0.3-fold or 0.4-fold expression level, respectively) than in the Conv group. In conclusion, the luminal inhabitation of SCFA-producing bacteria may potentiate the regulation of non-neuronal and atropine-sensitive ileal contractile responses to SCFAs under healthy and inflammatory conditions.