journal
MENU ▼
Read by QxMD icon Read
search

Biomedical Research

journal
https://www.readbyqxmd.com/read/28239035/characterization-of-membrane-progestin-receptor-%C3%AE-mpr%C3%AE-of-the-medaka-and-role-in-the-induction-of-oocyte-maturation
#1
Shimi Rani Roy, Jun Wang, Md Rubel Rana, Mikiko Nakashima, Toshinobu Tokumoto
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...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28239034/effects-of-low-intensity-pulsed-ultrasound-on-osteoclasts-analysis-with-goldfish-scales-as-a-model-of-bone
#2
Taizo Hanmoto, Yoshiaki Tabuchi, Mika Ikegame, Takashi Kondo, Kei-Ichiro Kitamura, Masato Endo, Isao Kobayashi, Hiroyuki Mishima, Toshio Sekiguchi, Makoto Urata, Azusa Seki, Sachiko Yano, Atsuhiko Hattori, Nobuo Suzuki
The effects of low-intensity pulsed ultrasound (LIPUS) on osteoclastogenesis were examined using fish scales that had both osteoclasts and osteoblasts. The binding of the receptor activator of NF-κB ligand (RANKL) in osteoblasts to the receptor activator of NF-κB (RANK) in osteoclasts induced osteoclastogenesis. Therefore, we focused on RANK/RANKL signaling. After 6 h of incubation following LIPUS treatment, mRNA expression of RANKL increased significantly. Resulting from the increased RANKL mRNA level, the expression of transcription-regulating factors significantly increased after 6 h of incubation, and then the mRNA expression of functional genes was significantly up-regulated after 12 h of incubation...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28239033/hertwig-s-epithelial-root-sheath-cells-contribute-to-formation-of-periodontal-ligament-through-epithelial-mesenchymal-transition-by-tgf-%C3%AE
#3
Satoshi Itaya, Kyoko Oka, Kayoko Ogata, Shougo Tamura, Michiko Kira-Tatsuoka, Naoki Fujiwara, Keishi Otsu, Eichi Tsuruga, Masao Ozaki, Hidemitsu Harada
In tooth root development, periodontal ligament (PDL) and cementum are formed by the coordination with the fragmentation of Hertwig's epithelial root sheath (HERS) and the differentiation of dental follicle mesenchymal cells. However, the function of the dental epithelial cells after HERS fragmentation in the PDL is not fully understood. Here, we found that TGF-β regulated HERS fragmentation via epithelial-mesenchymal transition (EMT), and the fragmented epithelial cells differentiated into PDL fibroblastic cells with expressing of PDL extracellular matrix (ECM)...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28239032/effects-of-heat-treatment-on-conformation-and-cell-growth-activity-of-alpha-lactalbumin-and-beta-lactoglobulin-from-market-milk
#4
Mizuho Inagaki, Shuji Kawai, X Ijier, Mayuko Fukuoka, Tomio Yabe, Satoshi Iwamoto, Yoshihiro Kanamaru
Heat processes, low temperature for long time (LTLT) pasteurization and ultra-heat treatment (UHT) sterilization, are essential for commercial market milk to improve the shelf life of raw milk and ensure microbial safety. We evaluated the effects of heat experience on the molecular properties of α-lactalbumin (α-LA) and β-lactoglobulin (β-LG) isolated from four types of market milk such as LTLT-A (66°C for 30 min), LTLT-B (65°C for 30 min), UHT-I (130°C for 2 s, indirect heating) and UHT-D (135°C for 2 s, direct heating) samples...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28239031/cd44-variant-9-expression-as-a-predictor-for-gastric-cancer-recurrence-immunohistochemical-and-metabolomic-analysis-of-surgically-resected-tissues
#5
Yushi Yamakawa, Masatoshi Kusuhara, Masanori Terashima, Yusuke Kinugasa, Takashi Sugino, Masato Abe, Toru Mochizuki, Keiichi Hatakeyama, Kenjiro Kami, Ken Yamaguchi
CD44 variant 9 (CD44v9) and the heavy chain of 4F2 cell-surface antigen (CD98hc) appear important for regulation of reactive oxygen species defence and tumor growth in gastric cancer. This study examined the roles of CD44v9 and CD98hc as markers of gastric cancer recurrence, and investigated associations with energy metabolism. We applied capillary electrophoresis time-of-flight mass spectrometry to metabolome profiling of gastric cancer specimens from 103 patients who underwent resection with no residual tumor or microscopic residual tumor, and compared metabolite levels to immunohistochemical staining for CD44v9 and CD98hc...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28239030/metabolic-profiling-of-gemcitabine-and-paclitaxel-treated-immortalized-human-pancreatic-cell-lines-with-k-ras-g12d
#6
Akiko Todaka, Rina Umehara, Keiko Sasaki, Masakuni Serizawa, Kenichi Urakami, Masatoshi Kusuhara, Ken Yamaguchi, Hirofumi Yasui
The mechanisms of action of gemcitabine (GEM) and paclitaxel (PTX) have been well investigated, and shown to be the inhibition of DNA polymerase and polymerization of tubulin, respectively. Meanwhile, genomic research has revealed that mutations in the K-RAS oncogene occur in over 90% of pancreatic cancer. Oncogenic alteration rewires alternative metabolic pathways to satisfy the demands of growth. The K-RAS oncogene also has been shown to upregulate glycolysis and glutaminolysis. However, it is still unclear whether K-RAS independently plays a central role in controlling tumor metabolism...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28239029/comprehensive-analysis-of-gene-mutation-and-expression-profiles-in-neuroendocrine-carcinomas-of-the-stomach
#7
Rie Makuuchi, Masanori Terashima, Masatoshi Kusuhara, Takashi Nakajima, Masakuni Serizawa, Keiichi Hatakeyama, Keiichi Ohshima, Kenichi Urakami, Ken Yamaguchi
The gene mutation and expression profiles of gastric neuroendocrine carcinoma (NEC) have not been comprehensively determined. Here, we examined the gene mutation and expression profiles of NEC using whole exome sequencing (WES) and microarray analysis. Six patients with gastric NEC and 13 with gastric adenocarcinoma (GAD) were included in this study. Single nucleotide variants were compared and multivariate statistical investigation with orthogonal partial least squares discriminant analysis (OPLS-DA) was performed to compare the difference in expression profiles between NEC and GAD...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28239028/changes-in-the-three-dimensional-ultrastructure-of-membranous-organelles-in-male-rat-pituitary-gonadotropes-after-castration
#8
Daisuke Koga, Hiroki Bochimoto, Satoshi Kusumi, Tatsuo Ushiki, Tsuyoshi Watanabe
The increased discharge of gonadotropin releasing hormone (GnRH) from hypothalamic neurons after castration specifically stimulates pituitary gonadotropes. To elucidate the putative effects of GnRH on the three-dimensional ultrastructure of gonadotropes, we examined osmium-macerated pituitary tissues of male rats at various time points after castration by high resolution scanning electron microscopy (SEM) combined with immunocytochemistry. Two days after castration, the Golgi apparatus was disassembled into small stacks; patch-like, tubuloreticular clusters of endoplasmic reticulum (ER) membranes were present; and spherically enlarged mitochondria were accumulated in the central area of the stimulated gonadotropes...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28003585/cold-stimulation-evokes-exocytotic-vesicle-release-from-pc12-cells
#9
Ryoichi Yoshimura, Misaki Nakagawa, Yasuhisa Endo
The mechanism of peripheral blood circulation failure by low temperatures, known as Raynaud's phenomenon, is not well understood at present. We examined the possibility that the efferent fibers of peripheral sympathetic neurons may release transmitters directly by cold sensation. PC12 cells, a culture model of sympathetic neurons, were placed at 25°C for 30 min, fixed with the tannic acid-glutaraldehyde-osmium method and observed by electron microscopy. The number of omega-shaped exocytotic vesicle figures increased significantly compared with that in the control (37°C), although it was lower than that of the positive control (high potassium stimulation at 25°C and 37°C)...
2016: Biomedical Research
https://www.readbyqxmd.com/read/28003584/integrated-next-generation-sequencing-analysis-of-whole-exome-and-409-cancer-related-genes
#10
Yuji Shimoda, Takeshi Nagashima, Kenichi Urakami, Tomoe Tanabe, Junko Saito, Akane Naruoka, Masakuni Serizawa, Tohru Mochizuki, Keiichi Ohshima, Sumiko Ohnami, Shumpei Ohnami, Masatoshi Kusuhara, Ken Yamaguchi
The use of next-generation sequencing (NGS) techniques to analyze the genomes of cancer cells has identified numerous genomic alterations, including single-base substitutions, small insertions and deletions, amplification, recombination, and epigenetic modifications. NGS contributes to the clinical management of patients as well as new discoveries that identify the mechanisms of tumorigenesis. Moreover, analysis of gene panels targeting actionable mutations enhances efforts to optimize the selection of chemotherapeutic regimens...
2016: Biomedical Research
https://www.readbyqxmd.com/read/28003583/optimizing-an-ion-semiconductor-sequencing-data-analysis-method-to-identify-somatic-mutations-in-the-genomes-of-cancer-cells-in-clinical-tissue-samples
#11
Takeshi Nagashima, Yuji Shimoda, Tomoe Tanabe, Akane Naruoka, Junko Saito, Masakuni Serizawa, Keiichi Ohshima, Kenichi Urakami, Sumiko Ohnami, Shumpei Ohnami, Tohru Mochizuki, Masatoshi Kusuhara, Ken Yamaguchi
Identification of causal genomic alterations is an indispensable step in the implementation of personalized cancer medicine. Analytical methods play a central role in identifying such changes because of the vast amount of data produced by next generation sequencer. Most analytical techniques are designed for the Illumina platform and are therefore suboptimal for analyzing datasets generated by whole exome sequencing (WES) using the Ion Proton System. Accurate identification of somatic mutations requires the characterization of platform-dependent error profiles and genomic properties that affect the accuracy of sequence data as well as platform-oriented optimization of the pipeline...
2016: Biomedical Research
https://www.readbyqxmd.com/read/28003582/the-broad-distribution-of-gp2-in-mucous-glands-and-secretory-products
#12
Shunsuke Kimura, Junko Nio-Kobayashi, Ayuko Kishimoto, Toshihiko Iwanaga
GP2, a GPI-anchored glycoprotein that is a useful marker for M cells of Peyer's patches, is functionally related to the uptake of pathogenic bacteria in the gut lumen. Our immunostaining throughout the whole body of mice detected a broader localization than previously found of GP2 in various mucous glands and secretory cells. In the oral cavity, the palatine gland and lingual gland intensely expressed GP2 with immunolabeling along the basolateral membrane of acini and in luminal secretions of ducts. Secretory portions of the duodenal gland as well as the pancreas were immunoreactive for GP2 in the digestive tract...
2016: Biomedical Research
https://www.readbyqxmd.com/read/28003581/triterpenes-suppress-octanoylated-ghrelin-production-in-ghrelin-expressing-human-gastric-carcinoma-cells
#13
Kensuke Nakajima, Shigeru Oiso, Takuhiro Uto, Osamu Morinaga, Yukihiro Shoyama, Hiroko Kariyazono
Ghrelin is an appetite-stimulating peptide hormone with an octanoyl modification at serine 3 that is essential for its orexigenic effect. Ghrelin O-acyltransferase (GOAT) is the enzyme that catalyzes ghrelin acylation using fatty acyl-coenzyme A as a substrate. We previously developed an assay system based on the AGS-GHRL8 cell line that produces octanoylated ghrelin in the presence of octanoic acid, and demonstrated that some fatty acids suppressed octanoylated ghrelin production. Recent studies have reported that triterpenes have anti-obesity effect...
2016: Biomedical Research
https://www.readbyqxmd.com/read/28003580/identification-of-the-odor-active-volatile-compound-z-z-4-7-tridecadienal-as-a-potential-ligand-for-the-transmembrane-receptor-cd36
#14
Satoshi Tsuzuki, Takahiko Amitsuka, Tatsuya Okahashi, Yuki Kozai, Masayuki Yamasaki, Kazuo Inoue, Tohru Fushiki
Cluster of differentiation 36 (CD36) is a broadly expressed transmembrane protein that has multiple ligands, including oxidized low-density lipoproteins. We found recently that CD36 is expressed in olfactory sensory neurons and postulated that it plays a role in the detection of distinct odorants in the nasal cavity. To date, however, there have been few examples of attempts to identify CD36-recognizable odorants. In this study, by an in vitro assay using a peptide mimic of the receptor, we provided evidence that CD36 recognizes (Z,Z)-4,7-tridecadienal, an odor-active volatile compound that is known to occur in Katsuobushi (dried, fermented, and smoked skipjack tuna commonly used in Japanese cuisine as a seasoning) and in the preorbital secretion of male oribi...
2016: Biomedical Research
https://www.readbyqxmd.com/read/28003579/effect-of-1-25-dihydroxyvitamin-d3-on-spontaneous-calcium-responses-in-rat-dental-epithelial-sf2-cells-revealed-by-long-term-imaging
#15
Kaori Murata, Ayumi Takahashi, Takao Morita, Akihiro Nezu, Satoshi Fukumoto, Masato Saitoh, Akihiro Tanimura
Genetically encoded calcium indicators (GECIs) are suitable for long-term imaging studies. In this study, we employed a highly sensitive GECI, G-GECO, and achieved efficient gene delivery with an adenoviral vector. The adenoviral vector allowed us to express G-GECO in more than 80% of cells. More than 80% of G-GECO-expressing cells showed an ATP-induced increase in fluorescence intensity due to Ca(2+) release from intracellular stores and subsequent Ca(2+) entry. The fluorescence intensity of these cells was increased more than 2-fold by stimulation with 10 μM ATP...
2016: Biomedical Research
https://www.readbyqxmd.com/read/27784876/diversity-of-the-intestinal-microbiota-differently-affects-non-neuronal-and-atropine-sensitive-ileal-contractile-responses-to-short-chain-fatty-acids-in-mice
#16
Masako Yajima, Shin-Ichiro Karaki, Takeshi Tsuruta, Shunsuke Kimura, Junko Nio-Kobayashi, Atsukazu Kuwahara, Takaji Yajima
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...
2016: Biomedical Research
https://www.readbyqxmd.com/read/27784875/application-of-human-mesenchymal-stem-cells-cultured-in-different-oxygen-concentrations-for-treatment-of-graft-versus-host-disease-in-mice
#17
Dae Seong Kim, Myoung Woo Lee, Young Jong Ko, Hyun Jin Park, Yoo Jin Park, Dong-Ik Kim, Hye Lim Jung, Ki Woong Sung, Hong Hoe Koo, Keon Hee Yoo
Human mesenchymal stem cell (MSC) heterogeneity and problems associated with the ex vivo expansion of MSC are linked with the failure of MSC clinical trials. In this study, we compared the effect of MSCs cultured in different oxygen concentrations on GVHD in mice to elucidate whether hypoxia improves the immunosuppressive capacity of MSCs. Hypoxia increased the proliferative activity and the expression of several stemness and chemokine genes, such as KLF4, OCT4, C-MYC, CCL2, and CXCL10. Mice that received MSCs cultured in normoxia or hypoxia showed alleviated symptoms of GVHD and increased survival times...
2016: Biomedical Research
https://www.readbyqxmd.com/read/27784874/the-effect-of-consuming-small-volumes-of-beer-on-gastric-motility-and-the-involvement-of-gene-polymorphisms
#18
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
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 (13)C-acetate 15 min later, after which the subjects' exhalations were collected up to 120 min...
2016: Biomedical Research
https://www.readbyqxmd.com/read/27784873/atp-release-from-bladder-urothelium-and-serosa-in-a-rat-model-of-partial-bladder-outlet-obstruction
#19
Kazuhiro Shiina, Ken-Ichiro Hayashida, Kazuo Ishikawa, Masahito Kawatani
Overactive bladder is one of the major health problem especially in elderly people. Adenosine triphosphate (ATP) is released from urinary bladder cells and acts as a smooth muscle contraction and sensory signal in micturition but little is known about the role of ATP release in the pathophysiology of overactive bladder. To assess the relationship between ATP and overactive bladder, we used a partial bladder outlet obstruction (pBOO) model in rats. The bladder caused several changes by pBOO: An increase in bladder weight, hypertrophy of sub-urothelium and sub-serosal area, and frequent non-voiding bladder contraction during urine storage...
2016: Biomedical Research
https://www.readbyqxmd.com/read/27784872/response-to-light-compressive-force-in-human-cementoblasts-in-vitro
#20
Kenji Matsunaga, Chika Ito, Kaichi Nakakogawa, Akina Sugiuchi, Ryo Sako, Masahiro Furusawa, Takashi Muramatsu
The objective of this study is to investigate the responses of human cementoblasts to light compressive force in vitro. A human cementoblast cell line (HCEM) was loaded for 12 h by mounting coverslips (0.25 gf/cm(2)). The coverslips were removed and the cells were cultured for up to 21 days. Cells without glass loading were used as controls. Cell growth, morphological changes, and the mRNA expression of RUNX2, ALP, WNT5A and SPON1 were investigated. No significant differences were observed in cell numbers between the compressed group and control group...
2016: Biomedical Research
journal
journal
28068
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"