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https://www.readbyqxmd.com/read/28926926/protective-effects-of-aloperin-on-monocroline-induced-pulmonary-hypertension-via-regulation-of-rho-a-rho-kinsase-pathway-in-rats
#1
Fan Wu, Wanxia Yao, Jiamei Yang, Min Zhang, Yanping Xu, Yinju Hao, Lin Yan, Yang Niu, Tao Sun, Jianqiang Yu, Ru Zhou
Pulmonary hypertension (PH) is fatal disease which closely involves Rho A/ Rho kinsase (ROCK) pathway. Aloperine is a main active alkaloid extracted from Sophora alopecuroides, which is a traditional Chinese herbal medicine that has been used widely. However, the effects of this alkaloid on pulmonary hypertension and its mechanisms remain unclear. Therefore, this study is designed to investigate whether aloperine has protective effects on PH induced by monocrotaline, whether these effects may be related to regulation of RhoA/ROCK pathway in rats...
September 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28926812/isotope-and-microbiome-data-provide-complementary-information-to-identify-natural-nitrate-attenuation-processes-in-groundwater
#2
Elena Hernández-Del Amo, Anna Menció, Frederic Gich, Josep Mas-Pla, Lluís Bañeras
Natural attenuation processes alleviate the impact of fertilization practices on groundwater resources. Therefore, identifying the occurrence of denitrification has become a requirement for water quality management. Several approaches are useful for this purpose, such as isotopic and microbiological methods, each of them providing distinct but complementary information about denitrification reactions, attenuation rates and their occurrence in the aquifer. In this paper, we investigate the contribution of both approaches to describe denitrification in a consolidated rock aquifer (limestone and marls), with a porosity related to fracture networks located in the northeastern sector of the Osona basin (NE Spain)...
September 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28926111/regulating-osteogenesis-and-adipogenesis-in-adipose-derived-stem-cells-by-controlling-underlying-substrate-stiffness
#3
Tao Zhang, Shiyu Lin, Xiaoru Shao, Sirong Shi, Qi Zhang, Changyue Xue, Yunfeng Lin, Bofeng Zhu, Xiaoxiao Cai
Cells reside in a complex microenvironment (niche) in which the biochemical and biophysical properties of the extracellular matrix profoundly affect cell behavior. Extracellular stiffness, one important bio-mechanical characteristic of the cell niche, is important in regulating cell proliferation, migration, and lineage specification. However, the mechanism by which mechanical signals guide osteogenic and adipogenic commitment of stem cells remains difficult to dissect. To explore this question, we generated a range of polydimethylsiloxane-based matrices with differing degrees of stiffness that mimicked the stiffness seen in natural tissues and examined adipose stem cell morphology, spreading, vinculin expression and differentiation along the osteogenic and adipogenic pathways...
September 19, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28923777/an-improved-method-for-permeability-estimation-of-the-bioclastic-limestone-reservoir-based-on-nmr-data
#4
Xinmin Ge, Yiren Fan, Jianyu Liu, Li Zhang, Yujiao Han, Donghui Xing
Permeability is an important parameter in formation evaluation since it controls the fluid transportation of porous rocks. However, it is challengeable to compute the permeability of bioclastic limestone reservoirs by conventional methods linking petrophysical and geophysical data, due to the complex pore distributions. A new method is presented to estimate the permeability based on laboratory and downhole nuclear magnetic resonance (NMR) measurements. We divide the pore space into four intervals by the inflection points between the pore radius and the transversal relaxation time...
September 9, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28922333/rock-inhibitor-ripasudil-as-coadjuvant-after-descemetorhexis-without-an-endothelial-graft
#5
Virgilio Galvis, Alejandro Tello, Johanna P Fuquen, Carlos A Rodríguez-Barrientos, Juan Martín Grice
No abstract text is available yet for this article.
September 14, 2017: Cornea
https://www.readbyqxmd.com/read/28921504/g%C3%AE-12-facilitates-carbachol-induced-shortening-in-human-airway-smooth-muscle-by-modulating-phosphoinositide-3-kinase-mediated-activation-in-a-rhoa-dependent-manner
#6
Edwin J Yoo, Gaoyuan Cao, Cynthia J Koziol-White, Christie A Ojiaku, Krishna Sunder, Joseph A Jude, James V Michael, Hong Lam, Ivan Pushkarsky, Robert Damoiseaux, Dino Di Carlo, Kwangmi Ahn, Steven S An, Raymond B Penn, Reynold A Panettieri
BACKGROUND AND PURPOSE: Phosphoinositide 3-kinase (PI3K)-dependent activation of Rho kinase (ROCK) is necessary for agonist-induced human airway smooth muscle cell (HASMC) contraction, and inhibition of PI3K promotes bronchodilation of human small airways. The upstream mechanisms driving agonist-mediated PI3K/ROCK axis activation, however, remain unclear. Given the capacity of G12 family proteins to activate ROCK pathways in other cell types (Riobo and Manning, 2005), the role of G12 proteins in modulating M3 muscarinic acetylcholine receptor (M3R)-stimulated PI3K/ROCK activation and HASMC contraction was examined...
September 17, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28920842/marivibrio-halodurans-gen-nov-sp-nov-a-marine-bacterium-in-the-family-rhodospirillaceae-isolated-from-underground-rock-salt
#7
Shaoxing Chen, Yao Xu, Chen Zheng, Li-Xia Ke
Gram-negative, spiral or curved rod-shaped cells of a bacterial strain, designated ZC80T, were isolated from a rock salt sample collected at Yunnan salt mine, China. Analysis of the strain's 16S rRNA gene sequence revealed a clear affiliation of this novel strain within the family Rhodospirillaceae. Strain ZC80T formed a robust cluster with Pelagibius litoralis CL-UU02T at a 16S rRNA gene sequence similarity level of 88.1 %. Strain ZC80T shared no more than 91.0 % 16S rRNA gene sequence similarity with the type strains of other species in the family Rhodospirillaceae...
September 18, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28920037/the-management-of-chronic-pain-caught-between-a-rock-and-a-hard-place-the-case-for-a-renewed-focus-on-provider-patient-and-payer-education
#8
Talal W Khan, Farnad Imani
No abstract text is available yet for this article.
February 2017: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/28919351/suspension-state-increases-reattachment-of-breast-cancer-cells-by-up-regulating-lamin-a-c
#9
Xiaomei Zhang, Yonggang Lv
Extravasation is a rate-limiting step of tumor metastasis, for which adhesion to endothelium of circulating tumor cells (CTCs) is the prerequisite. The suspension state of CTCs undergoing detachment from primary tumor is a persistent biomechanical cue, which potentially regulates the biophysical characteristics and cellular behaviors of tumor cells. In this study, breast tumor cells MDA-MB-231 in suspension culture condition were used to investigate the effect of suspension state on reattachment of CTCs. Our study demonstrated that suspension state significantly increased the adhesion ability of breast tumor cells...
September 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28919266/rock-bream-iridovirus-rbiv-replication-in-rock-bream-oplegnathus-fasciatus-exposed-for-different-time-periods-to-susceptible-water-temperatures
#10
Myung-Hwa Jung, Chamilani Nikapitiya, Tharabenahalli-Nagaraju Vinay, Jehee Lee, Sung-Ju Jung
Rock bream iridovirus (RBIV) is a member of the Megalocytivirus genus that causes severe mortality to rock bream. Water temperature is known to affect the immune system and susceptibility of fish to RBIV infection. In this study, we evaluated the time dependent virus replication pattern and time required to completely eliminate virus from the rock bream body against RBIV infection at different water temperature conditions. The rock bream was exposed to the virus and held at 7 (group A1), 4 (group A2) and 2 days (group A3) at 23 °C before the water temperature was reduced to 17 °C...
September 15, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28919126/low-dose-ct-for-the-diagnosis-of-appendicitis-in-adolescents-and-young-adults-locat-a-pragmatic-multicentre-randomised-controlled-non-inferiority-trial
#11
Hyuk Jung Kim, Byeong Geon Jeon, Chong Kun Hong, Kye Won Kwon, Seung Bong Han, Soya Paik, Suk Ki Jang, Young Rock Ha, Young Sik Kim, Min Hee Lee, Boem Ha Yi, Eung Jin Shin, Hae Kyung Lee, Hee Kyung Kim, Ho Jung Kim, Jae Hyung Choi, Young Soon Cho, Min-Jeong Kim, Dong Kyu Kim, Ji-Young Choe, Kyueng-Whan Min, Man Sup Lim, Sang Ook Ha, Sang Woo Lim, Youdong Sohn, Young Hwan Lee, Ji Hoon Park, Bon Seung Gu, Hye Seung Lee, Jae Hyuk Lee, Ji Ye Sim, Joonghee Kim, Kyoung Ho Lee, Kyuseok Kim, Soyeon Ahn, Sung-Bum Kang, Yoon Jin Lee, You Hwan Jo, Young Hoon Kim, Yousun Ko, Seung Joon Choi, Bohyung Song, Byung Ho Goh, Chaesuk Lim, Chang Rae Kim, Cho Rong Seo, Eunbaeck Kim, Gio Han, Jae-Hyug Woo, Jinhyun Kim, Kyoungjin Min, Min-A Lee, Min Ju Jeong, Min Kyoung Lee, Yong Su Lim, Young Sup Shim, Sung Bin Park, Chan Woong Kim, Dong Hoon Lee, Seung Eun Lee, Sung Eun Kim, Yoo Shin Choi, Sung Eun Rha, Eun Sun Jung, Gun Hyung Na, Han Joon Kim, Han Mo Yoo, Hye Kyung Chang, Joon Il Choi, Kyu Nam Park, Michael Yong Park, Moon Hyung Choi, Sang Hoon Oh, Seung Eun Jung, Sohee Lee, Soo Ah Im, Soo Hyun Kim, Soon Nam Oh, Tae Ho Hong, Won-Kyung Kang, Young Joon Lee, Young Hwan Lee, Dong Baek Kang, Hyun Soo Han, Jeong Woo Choi, Ki-Jung Yoon, Yong Hwang, Seong Sook Hong, Eui Sung Hwang, Heajin Chung, Hye Young Jang, Jiyoung Hwang, Jun Bum Park, Kyung Yul Hur, Yoon Mi Jeen, Young Joo Lee, Young Shin Cho, Han Jin Cho, Inyoung Choi, Jong Hak Park, Jooyeong Kim, Suk Keu Yeom, Sung Woo Moon, Young Sik Kim, Mi Sung Kim, Dong Hyuk Shin, Heon-Ju Kwon, Pil Cho Choi, Sang Kuk Han, Ji Young Woo, Gu Hyun Kang, Han Myun Kim, Hyun Young Choi, Ik Yang, Jae Ho Jang, Jeong Won Kim, Sang Nam Yoon, Won Hee Kim, Yong Soo Jang, Mi-Suk Park, In Cheol Park, Jae Gil Lee, Min Joung Kim, Yong Eun Chung, Jongmee Lee, Baek-Hui Kim, Chang Hee Lee, Jung-Youn Kim, Sanghee Kang, Sung-Hyuk Choi, Yang Shin Park, Seong Whi Cho, Chan Woo Park, Gi Bong Chae, Taek Guen Ohk, Yong-Hwan Jeon, Nurhee Hong, Dae Han Wi, Jun Hee Lee, Jung Nam Kwon, Seok Youn Lee, Weon-Cheol Han, Young Cheol Song, Mi Jeong Kim, Jung Hyeok Kwon, Seoung Kyu Beak, Sung Jin Kim, Woo Ik Choi, Yu Na Kang, Cheong-Il Shin, Dong Ho Lee, Gyeong Hoon Kang, Ijin Joo, Jeong Hee Yoon, Ji Won Park, Kyu Joo Park, Sang Do Shin, Seung-Bum Ryoo, Seung-Yong Jeong, Su Joa Ahn, Tae Han Kim, Won Chang, Yoon-Hye Kwon, Sang Soo Shin, Hee Joon Kim, Ho Goon Kim, Yong Soo Cho, Yoo Duk Choi, Bong Soo Kim, Chang Lim Hyun, Guk Myung Choi, In Ho Jeong, Kyeong Won Kang, Seung Hyoung Kim, Woo Jeong Kim, Young Joon Kang, Kwang Pyo Kim
BACKGROUND: CT radiation is arguably carcinogenic. Results from single-centre studies, mostly retrospective, have advocated lowering the CT radiation dose for the diagnosis of appendicitis. However, adoption of low-dose CT has been slow. We aimed to assess the effectiveness of low-dose CT compared with standard-dose CT in the diagnosis of appendicitis in adolescents and young adults. METHODS: We did this pragmatic, multicentre, randomised controlled non-inferiority trial at 20 South Korean teaching hospitals with little experience with low-dose CT...
September 11, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28917869/high-aspect-ratio-phospho-calcified-rock-candy-like-cellulose-nanowhiskers-of-wastepaper-applicable-in-osteogenic-differentiation-of-hmscs
#12
Mohsen Shahrousvand, Fatemeh Ahmadi Tabar, Ehsan Shahrousvand, Amir Babaei, Mohammad Mahdi Hasani-Sadrabadi, Gity Mir Mohamad Sadeghi, Hafez Jafari, Ali Salimi
The aim of this study was to prepare cellulose nanowhiskers (CNWs) from wastepaper powder (WPP), as an environmentally friendly approach for obtaining the source material, which is a highly available and low-cost precursor for cellulose nanomaterial processing. Acid hydrolysis and calcification treatments were employed for extraction of CNWs and preparation of novel phospho-calcified cellulose nanowhiskers (PCCNWs). CNWs and PCCNWs were analyzed through optical microscopy (OM), scanning electron microscopy (SEM), Fourier-transformed infrared spectra (FTIR) and X-ray diffraction analysis (XRD)...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917488/gene-expression-regulation-of-the-tlr9-and-myd88-dependent-pathways-in-rock-bream-against-rock-bream-iridovirus-rbiv-infection
#13
Myung-Hwa Jung, Sung-Ju Jung
Rock bream iridovirus (RBIV), which is a member of the Megalocytivirus genus, causes severe mass mortalities in rock bream in Korea. To date, the innate immune defense mechanisms of rock bream against RBIV is unclear. In this study, we assessed the expression levels of genes related to TLR9 and MyD88-dependent pathways in RBIV-infected rock bream in high, low or no mortality conditions. In the high mortality group (100% mortality at 15 days post infection (dpi)), high levels of TLR9 and MyD88 expressions (6...
September 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28916267/comparison-of-phagocytosis-in-three-caribbean-sea-urchins
#14
John DeFilippo, John Ebersole, Gregory Beck
In 1983 large numbers of the sea urchin Diadema antillarum unexplainably began showing signs of illness and dying in the Caribbean, and over the next year they came close to extinction, making it one of the worst mass mortality events on record. Present evidence suggests a water-borne pathogen as the etiological agent. Decades later Diadema densities remain low, and its near extinction has been a major factor in transforming living coral reefs in the Caribbean to barren algae-covered rock. In the ensuing decades, no solid explanation has been found to the questions: what killed Diadema; why did Diadema succumb while other species of urchins on the same reefs did not; and why has Diadema still not recovered? A recent hypothesis posited by our lab as to Diadema's vulnerability was directed at possible compromised immunity in Diadema, and experimental results found a significantly impaired humoral response to a key component of gram-negative bacteria...
September 12, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28916199/erk-and-rock-functionally-interact-in-a-signaling-network-that-is-compensationally-upregulated-in-spinal-muscular-atrophy
#15
Niko Hensel, Svetlana Baskal, Lisa Marie Walter, Hella Brinkmann, Manuela Gernert, Peter Claus
Spinal Muscular Atrophy (SMA) is a motoneuron disease caused by low levels of functional survival of motoneuron protein (SMN). Molecular disease mechanisms downstream of functional SMN loss are still largely unknown. Previous studies suggested an involvement of Rho kinase (ROCK) as well as the extracellular signal-regulated kinases (ERK) pathways in the pathomechanism. Both pathways are bi-directionally linked and inhibit each other. Thus, we hypothesize that both pathways regulate SMA pathophysiology in vivo in a combined manner rather than acting separately...
September 12, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28916103/controlled-synchronized-actuation-of-microdroplets-by-gravity-in-a-superhydrophobic-3d-printed-device
#16
P E Oomen, J P S H Mulder, E Verpoorte, R D Oleschuk
Droplet manipulation over open surfaces allows one to perform assays with a large degree of control and high throughput, making them appealing for applications in drug screening or (bio)analysis. However, the design, manufacturing and operation of these systems comes with high technical requirements. In this study we employ a commercial, low-friction, superhydrophobic coating, Ultra-Ever Dry(®), on a 3D-printed microfluidic device. The device features individual droplet compartments, which allow the manipulation of discrete droplets (10-50 μL) actuated by gravity alone...
October 2, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28915740/charge-compensation-at-the-interface-between-the-polar-nacl-111-surface-and-a-nacl-aqueous-solution
#17
Thomas Sayer, Chao Zhang, Michiel Sprik
Periodic supercell models of electric double layers formed at the interface between a charged surface and an electrolyte are subject to serious finite size errors and require certain adjustments in the treatment of the long-range electrostatic interactions. In a previous publication Zhang and Sprik [Phys. Rev. B 94, 245309 (2016)], we have shown how this can be achieved using finite field methods. The test system was the familiar simple point charge model of a NaCl aqueous solution confined between two oppositely charged walls...
September 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28915028/acid-rock-drainage-treatment-using-membrane-distillation-impacts-of-chemical-free-pretreatment-on-scale-formation-pore-wetting-and-product-water-quality
#18
Eric J Hull, Katherine Zodrow
Acid rock drainage (ARD) is a metal-rich wastewater that forms upon oxidation of sulfidic minerals. Although ARD impacts >12,000 miles of rivers in the U.S. and has an estimated cleanup cost of $32 - $72 billion, the low pH and high metal concentrations in ARD make rapid, high volume treatment without chemical addition difficult. This research focuses on a novel method of ARD treatment, membrane distillation (MD). In MD, heated ARD is separated from a cooled distillate by a hydrophobic, water-excluding membrane...
September 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28914001/comparative-study-of-the-effects-of-trabecular-meshwork-outflow-drugs-on-the-permeability-and-nitric-oxide-production-in-trabecular-meshwork-cells
#19
Jae Woo Kim
PURPOSE: To compare the effects of the barrier function in human trabecular meshwork (TM) cells monolayer and the production of nitric oxide (NO) between trabecular outflow drugs, Rho-associated kinase (ROCK) inhibitors, adenosine, and statin. METHODS: Primary cultured TM cells were exposed to 10 or 25 μM Y-27632, 0.1 or 1 μM N6-cyclohexyladenosine (CHA), or 15 or 30 μM simvastatin for 24 hours. NO production and expression of endothelial nitric oxide synthase mRNA were measured by Griess assay and reverse transcription polymerase chain reaction, respectively...
July 25, 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28913869/fast-growing-oysters-show-reduced-capacity-to-provide-a-thermal-refuge-to-intertidal-biodiversity-at-high-temperatures
#20
Dominic McAfee, Wayne A O'Connor, Melanie J Bishop
1.Ecosystem engineers that modify the thermal environment experienced by associated organisms might assist in the climate change adaptation of species. This depends upon the ability of ecosystem engineers to persist and continue to ameliorate thermal stress under changing climatic conditions - traits that may display significant intraspecific variation. 2.In the physically stressful intertidal, the complex three-dimensional structure of oysters provides shading and traps moisture during aerial exposure at low tide...
September 15, 2017: Journal of Animal Ecology
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