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https://www.readbyqxmd.com/read/28530470/cd73-controls-extracellular-adenosine-generation-in-the-trigeminal-nociceptive-nerves
#1
X Liu, L Ma, S Zhang, Y Ren, R T Dirksen
Purinergic signaling is involved in pain generation and modulation in the nociceptive sensory nervous system. Adenosine triphosphate (ATP) induces pain via activation of ionotropic P2X receptors while adenosine mediates analgesia via activation of metabotropic P1 receptors. These purinergic signaling are determined by ecto-nucleotidases that control ATP degradation and adenosine generation. Using enzymatic histochemistry, we detected ecto-AMPase activity in dental pulp, trigeminal ganglia (TG) neurons, and their nerve fibers...
June 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28523794/mineralocorticoid-receptor-associates-with-pro-inflammatory-bias-in-hippocampus-of-spontaneously-hypertensive-rats
#2
María Elvira Brocca, Luciana Pietranera, Maria Meyer, Analia Lima, Paulina Roig, E Ronald de Kloet, Alejandro F De Nicola
Damage observed in the hippocampus of the adult spontaneously hypertensive rat (SHR) resembles the neuropathology of mineralocorticoid-induced hypertension, supporting a similar endocrine dysfunction in both entities. In this study we have tested the hypothesis that increased expression of the hippocampal mineralocorticoid receptor (MR) in SHR animals is associated with a prevalent expression of pro-inflammatory over anti-inflammatory factors. For this purpose we measured in hippocampus mRNA expression and immunoreactivity of the MR and the glucocorticoid receptor (GR) using qPCR and histochemistry...
May 18, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28521819/linking-hypoxia-dna-damage-and-proliferation-in-multicellular-tumor-spheroids
#3
Stephen Riffle, Ram Naresh Pandey, Morgan Albert, Rashmi S Hegde
BACKGROUND: Multicellular Tumor Spheroids are frequently used to mimic the regionalization of proliferation and the hypoxic environment within avascular tumors. Here we exploit these features to study the activation of DNA damage repair pathways and their correlation to developing hypoxia. METHODS: Activation of DNA damage repair markers, proliferation, cell death, glycogen accumulation and developing hypoxia were investigated using immunofluorescence, immuno-histochemistry, EdU incorporation, Western blots, COMET assays, and pharmacological agents in A673 Ewing sarcoma spheroids and monolayer cultures...
May 18, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28521807/case-report-a-novel-frameshift-mutation-in-the-mitochondrial-cytochrome-c-oxidase-ii-gene-causing-mitochondrial-disorder
#4
Laura Kytövuori, Mikko Kärppä, Hannu Tuominen, Johanna Uusimaa, Markku Saari, Reetta Hinttala, Kari Majamaa
BACKGROUND: Mitochondrial cytochrome c oxidase 2, MT-CO2, encodes one of the three subunits, which form the catalytic core of cytochrome c oxidase (COX), complex IV. Mutations in MT-CO2 are rare and the associated phenotypes are variable including nonsyndromic and syndromic forms of mitochondrial diseases. CASE PRESENTATION: We describe a 30-year-old man with cognitive decline, epilepsy, psychosis, exercise intolerance, sensorineural hearing impairment, retinitis pigmentosa, cataract and lactic acidosis...
May 18, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28508505/rapid-switch-off-of-the-human-mhc-iix-gene-after-heavy-load-muscle-contractions-is-sustained-for-at-least-4-days
#5
J L Andersen, T Gruschy-Knudsen
Long-term heavy-load contractions decrease the relative amount of the myosin heavy chain (MHC) IIX isoform in human skeletal muscle, but the timing of the down regulation in the short term is unknown. Untrained subjects performed two resistance bouts, in two consecutive days, with one leg, the other leg serving as a control (age 24±1, n=5). Muscle biopsies were obtained in both legs before, immediately after, and 24, 54 and 96 hours after exercise. Serial cryosection analysis combined immunohistochemistry and ATPase histochemistry with In Situ hybridization to identify the distribution of MHC isoforms and their corresponding transcripts, enabling identification of transitional fibres...
May 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28506298/fecx-bar-a-novel-bmp15-mutation-responsible-for-prolificacy-and-female-sterility-in-tunisian-barbarine-sheep
#6
Narjess Lassoued, Zohra Benkhlil, Florent Woloszyn, Ahmed Rejeb, Mohamed Aouina, Mourad Rekik, Stephane Fabre, Sonia Bedhiaf-Romdhani
BACKGROUND: Naturally occurring mutations in growth and differentiation factor 9 (GDF9) or bone morphogenetic protein 15 (BMP15) genes are associated with increased ovulation rate (OR) and litter size (LS) but also sterility. Observing the Tunisian Barbarine ewes of the "W" flock selected for improved prolificacy, we found prolific and infertile ewes with streaky ovaries. Blood genomic DNA was extracted from a subset of low-ovulating, prolific and infertile ewes of the "W" flock, and the entire coding sequences of GDF9 and BMP15 were sequenced...
May 15, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28496398/growth-of-thalamocortical-fibers-to-the-somatosensory-cortex-in-the-human-fetal-brain
#7
Željka Krsnik, Visnja Majić, Lana Vasung, Hao Huang, Ivica Kostović
Thalamocortical (TH-C) fiber growth begins during the embryonic period and is completed by the third trimester of gestation in humans. Here we determined the timing and trajectories of somatosensory TH-C fibers in the developing human brain. We analyzed the periods of TH-C fiber outgrowth, path-finding, "waiting" in the subplate (SP), target selection, and ingrowth in the cortical plate (CP) using histological sections from post-mortem fetal brain [from 7 to 34 postconceptional weeks (PCW)] that were processed with acetylcholinesterase (AChE) histochemistry and immunohistochemical methods...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28495418/structural-study-of-the-cremaster-muscle-in-patients-with-retractile-testis
#8
Luciano A Favorito, Kleber M Anderson, Suelen F Costa, Waldemar S Costa, Francisco Jb Sampaio
OBJECTIVE: To analyze the structure of the cremaster in patients with retractile testis (RT), comparing the distribution of nerves, elastic system and muscles with patients having cryptorchidism and inguinal hernia (IH). PATIENTS AND METHODS: We studied 31 patients, 17 with RT (mean age=5.17years); 9 with IH (mean age=2.6) and 5 with cryptorchidism (mean age=3). A cremaster biopsy was performed and submitted to routine histological processing and studied using histochemistry and immunohistochemistry...
April 28, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28486662/elevated-ackr2-expression-is-a-common-feature-of-inflammatory-arthropathies
#9
Helen M Baldwin, Mark D Singh, Veronica Codullo, Vicky King, Hilary Wilson, Iain McInnes, Gerard J Graham
Objectives.: Chemokines are essential contributors to leucocyte accumulation at sites of inflammatory pathology. Interfering with chemokine or chemokine receptor function therefore represents a plausible therapeutic option. However, our currently limited understanding of chemokine orchestration of inflammatory responses means that such therapies have not yet been fully developed. We have a particular interest in the family of atypical chemokine receptors that fine-tune, or resolve, chemokine-driven responses...
May 9, 2017: Rheumatology
https://www.readbyqxmd.com/read/28485004/sialic-acid-expression-in-human-fetal-skeletal-muscle-during-limb-early-myogenesis
#10
Mirca Marini, Erica Sarchielli, Giorgia Donata Zappoli Thyrion, Stefano Ambrosini, Eleonora Sgambati
Investigations on animal models demonstrated that changes of sialic acid (SA) expression, particularly the polymeric form, in the skeletal muscle during embryonic and post-natal development seem to be related to muscle differentiation and functionality onset. The aim of this study was to evaluate the monomeric and polymeric SA expression in human skeletal muscle during early stages of fetal development, when important morphofunctional events occur. Specimens of fetal skeletal muscle from limb, between 9 and 12 weeks of gestation (wg), were obtained from 19 pregnant women...
May 9, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28480587/melatonin-successfully-rescues-hippocampal-bioenergetics-and-improves-cognitive-function-following-drug-intoxication-by-promoting-nrf2-are-signaling-activity
#11
Li-You Chen, Ting-Yi Renn, Wen-Chieh Liao, Fu-Der Mai, Ying-Jui Ho, George Hsiao, Ai-Wei Lee, Hung-Ming Chang
Prolonged exposure to gamma-hydroxybutyric acid (GHB) would cause drug intoxication in which impaired cognitive function results from enhanced hippocampal oxidative stress may serve as a major symptom in this deficiency. Considering melatonin possesses significant anti-oxidative efficacy, present study aims to determine whether melatonin would successfully promote the Nrf2-ARE signaling, depress oxidative stress, and rescue hippocampal bioenergetics and cognitive function following drug intoxication injury...
May 8, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28480502/enriched-environment-attenuates-behavioral-seizures%C3%A2-and-depression-in-chronic%C3%A2-temporal-lobe-epilepsy
#12
Marigowda Vrinda, Arun Sasidharan, Sahajan Aparna, Bettadapura N Srikumar, Bindu M Kutty, Byrathnahalli S Shankaranarayana Rao
OBJECTIVE: Temporal lobe epilepsy (TLE) is commonly associated with depression, anxiety, and cognitive impairment. Despite significant progress in our understanding of the pathophysiology of TLE, it remains the most common form of refractory epilepsy. Enriched environment (EE) has a beneficial effect in many neuropsychiatric disorders. However, the effect of EE on cognitive changes in chronic TLE has not been evaluated. Accordingly, the present study evaluated the effects of EE on chronic epilepsy-induced alterations in cognitive functions, electrophysiology, and cellular changes in the hippocampus...
May 8, 2017: Epilepsia
https://www.readbyqxmd.com/read/28472789/znf667-serves-as-a-putative-oncogene-in-human-hepatocellular-carcinoma
#13
Ke Cheng, Zhizhao Chen, Lian Liu, Yujun Zhao, Sheng Zhang, Qiang Wang, Zhenghao Deng, Sipin Tan, Qifa Ye
BACKGROUND/AIMS: Zinc finger protein 667 (ZNF667) is a member of C2H2 zinc finger protein family. For the first time, we aim to analyze the expression pattern of ZNF667 in hepatocellular carcinoma (HCC) tissues; to explore its role in HCC tumorigenesis. METHODS: Immuno-histochemistry was carried out to characterize the ZNF667 expression in paraffin-embedded HCC samples. The relationship between ZNF667 expression and the clinical, pathological data of the patients were analyzed...
May 4, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28468949/identification-of-a-novel-the-itg%C3%AE-v%C3%AE-6-binding-peptide-using-protein-separation-and-phage-display
#14
Uwe Haberkorn, Annette Altmann, Max Sauter, Saskia Roesch, Walter Mier, Rolf Warta, Juergen Debus, Gerhard Dyckhoff, Christel Herold-Mende
PURPOSE: Targeted therapies are regarded as promising approaches to increase 5-year survival rate of head and neck squamous cell carcinoma (HNSCC) patients. EXPERIMENTAL DESIGN: For the selection of carcinoma-specific peptides membrane proteome of HNO97 tumor cells fractionated by the ProteomeLab™ PF2D system and corresponding HNO97 cells were deployed for an alternating biopanning using a sunflower trypsin inhibitor1-based phage display (SFTI8Ph) library. Stability, binding properties and affinity of novel candidates were assessed in vitro using radio-HPLC, binding experiments and surface plasmon resonance assay (SPR), respectively...
May 3, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28464311/comparative-anatomy-of-the-dorsal-hump-in-mature-pacific-salmon
#15
Kenta Susuki, Masatoshi Ban, Masaki Ichimura, Hideaki Kudo
Mature male Pacific salmon (Genus Oncorhynchus) demonstrate prominent morphological changes, such as the development of a dorsal hump. The degree of dorsal hump formation depends on the species in Pacific salmon. It is generally accepted that mature males of sockeye (O. nerka) and pink (O. gorbuscha) salmon develop most pronounced dorsal humps. The internal structure of the dorsal hump in pink salmon has been confirmed in detail. In this study, the dorsal hump morphologies were analyzed in four Pacific salmon species inhabiting Japan, masu (O...
May 2, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28461274/complete-removal-of-the-epitrochleoanconeus-muscles-in-patients-with-cubital-tunnel-syndrome-results-from-a-small-prospective-case-series
#16
Godard C W de Ruiter, Sjoerd G van Duinen
BACKGROUND: Sometimes during surgery for cubital syndrome an anomalous muscle called the epitrochleoanconeus is encountered. Different surgical strategies how to decompress the ulnar nerve in the presence of this muscle have been proposed, including transection of the muscle, resection, or subcutaneous transposition of the ulnar nerve. Because of the low incidence, there is no consensus on what type of surgical treatment can best be performed. In this study, we prospectively followed a small series of patients, in which the muscle was resected...
April 28, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28461138/distribution-of-asic4-transcripts-in-the-adult-wild-type-mouse-brain
#17
M Hoshikawa, A Kato, H Hojo, Y Shibata, N Kumamoto, M Watanabe, S Ugawa
Acid-sensing ion channel 4 (ASIC4) belongs to the ASIC gene family of neuronal proton-gated cation channels, and is the least understood subtype among the members. Previous studies of ASIC4 expression in the mammalian central nervous system have shown that ASIC4 is abundantly expressed in the spinal cord and in various brain regions, such as the cerebral cortex, the hippocampus, and the cerebellum. However, the detailed distribution of ASIC4 transcripts in mammalian brains still remains to be elucidated. In the present study, radioactive in situ hybridization histochemistry with an ASIC4-specific cRNA probe was performed on wild-type mouse brains, followed by X-gal staining experiments with Asic4-lacZ reporter mice Asic4(tm1a(KOMP)Mbp)...
April 29, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28455983/pd-l1-expression-as-poor-prognostic-factor-in-patients-with-non-squamous-non-small-cell-lung-cancer
#18
Cuiling Zhou, Jianjun Tang, Huanhuan Sun, Xiaobin Zheng, Zhanyu Li, Tiantian Sun, Jie Li, Shuncong Wang, Xiuling Zhou, Hongliu Sun, Zhibin Cheng, Hongyu Zhang, Haiqing Ma
OBJECTIVES: The role of programmed cell death ligand 1 (PD-L1) in non-small cell lung cancer (NSCLC), especially according to histologic type, remains controversial. The purpose of this study was to assess PD-L1 expression and its association with overall survival (OS) and clinicopathologic characteristics in NSCLC. MATERIAL AND METHODS: Formalin-fixed paraffin-embedded specimens were obtained from 108 patients with surgically resected primary NSCLC. PD-L1 expression was assessed via immunohistochemistry using a histochemistry score system...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28452949/generation-and-applications-of-a-dna-aptamer-against-gremlin-1
#19
Qian Li, Yongwei Huo, Yonghong Guo, Xiaoyan Zheng, Wengang Sun, Zhiming Hao
Gremlin-1, a highly conserved glycosylated and phosphorylated secretory protein, plays important roles in diverse biological processes including early embryonic development, fibrosis, tumorigenesis, and renal pathophysiology. Aptamers, which are RNA or DNA single-stranded oligonucleotides capable of binding specifically to different targets ranging from small organics to whole cells, have potential applications in targeted imaging, diagnosis and therapy. In this study, we obtained a DNA aptamer against Gremlin-1 (G-ap49) using in vitro Systematic Evolution of Ligands by Exponential Enrichment (SELEX)...
April 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28449118/polyphosphate-accumulating-bacterial-community-colonizing-the-calcium-bodies-of-terrestrial-isopod-crustaceans-titanethes-albus-and-hyloniscus-riparius
#20
Rok Kostanjšek, Vittori Miloš, Vesna Srot, Peter A van Aken, Štrus Jasna
Terrestrial isopods from the group Trichoniscidae accumulate calcium in specialized organs, known as the calcium bodies. These consist of two pairs of epithelial sacs located alongside the digestive system. These organs contain various forms of calcium and constantly present bacteria. To elucidate their origin and role, we analyzed the bacteria of the calcium bodies in the cave-dwelling isopod Titanethes albus and the epigean species Hyloniscus riparius, by microscopy, histochemistry, energy dispersive X-ray spectrometry, 16S rRNA analysis and in situ hybridization...
April 25, 2017: FEMS Microbiology Ecology
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