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Lixia Xiang, Lipan Hu, Weinan Xu, Ai Zhen, Liang Zhang, Xiaohui Hu
Gamma-aminobutyric acid (GABA) is important in plant responses to environmental stresses. We wished to clarify the role of GABA in maintenance of photosynthesis in muskmelon seedlings (Cucumis melo L., cv. Yipintianxia) during saline-alkaline stress. To this end, we assessed the effect of GABA on the structure and function of the photosynthetic apparatus in muskmelon seedlings grown under saline-alkaline stress. These stresses in combination reduced net photosynthetic rate, gas-exchange, and inhibited photosystem II (PSII) electron transport as measured by the JIP-test...
2016: PloS One
Jips J Zachariah, Justin A Ratcliffe, Michael Ruisi, Joseph Puma, Olivier Bertrand, Tak Kwan
OBJECTIVE: To demonstrate the safety and feasibility of the transpedal approach as an alternate arterial access site for iliac artery intervention. BACKGROUND: The common femoral artery is the traditional access site for the endovascular treatment of iliac artery stenoses. However, this approach is associated with complication rates as high as 2%, including retroperitoneal bleeding which carries high patient morbidity and mortality. Furthermore, the standard femoral approach is associated with longer recovery times and longer time to ambulation which are important considerations especially when performing procedures in an ambulatory setting...
September 18, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
McI Lier, R F Malik, Jhtm van Waesberghe, J W Maas, D A van Rumpt-van de Geest, S F Coppus, J P Berger, B B van Rijn, P F Janssen, M A de Boer, Jip de Vries, F W Jansen, I A Brosens, C B Lambalk, V Mijatovic
OBJECTIVE: To report pregnancy outcomes of SHiP (spontaneous haemoperitoneum in pregnancy) and the association with endometriosis. DESIGN: Retrospective case note review. SETTING: Dutch referral hospitals for endometriosis. SAMPLE: Eleven women presenting with 15 events of SHiP. METHODS: In collaboration with the Dutch Working Group on Endometriosis, unpublished cases of SHiP that occurred in the Netherlands between 2010 and 2015 were retrieved...
October 5, 2016: BJOG: An International Journal of Obstetrics and Gynaecology
Madhulika Singh, Vijay Pratap Singh, Sheo Mohan Prasad
In the present study, effect of different levels of nitrogen (N0, deprived; N25, sub-optimum; N75, optimum and N150, supra-optimum) in Solanum lycopersicum L. seedlings under NaCl (NaCl1, 0.3 g kg(-1) sand and NaCl2, 0.5 g kg(-1)sand) stress was investigated. Biomass accumulation, pigments, K(+) concentration, nitrate and nitrite contents were declined by NaCl in dose dependent manner. As compared to control (N75 without NaCl), fresh weight declined by 4% and 11%, and dry weight by 7 and 13% when seedlings were grown under N75+NaCl1 and N75+NaCl2 combinations, respectively...
August 31, 2016: Plant Physiology and Biochemistry: PPB
Fernanda Reinert, Camila Ferreira de Pinho, Marcio Alves Ferreira
Monitoring the effects of pollution on mangrove vegetation is a challenge. A specific study using an oil spill simulation on mangrove species was conducted to address this challenge. We tested the effectiveness of the chlorophyll a fluorescence kinetics as a fast and robust method to diagnose the vitality of Laguncularia racemosa. We used L. racemosa plants contaminated with marine fuel oil in mangrove microcosm models. Several parameters of the JIP-test were capable of detecting the impairment of the photosynthetic function prior to the visual manifestation of symptoms in response to oil contamination...
September 3, 2016: Marine Pollution Bulletin
Ra-Yeong Choi, Sang-Jip Nam, Ju Ri Ham, Hae-In Lee, Sung-Tae Yee, Kyung-Yun Kang, Kwon-Il Seo, Ju-Hye Lee, Myung-Joo Kim, Mi-Kyung Lee
Peucedanum japonicum Thunb is a medicinal plant belonging to the family Umbelliferae. This study evaluated the anti-diabetic and anti-obesity effects of cis-3',4'-diisovalerylkhellactone (cDIVK) isolated from Peucedanum japonicum Thunb leaves. cDIVK (30 and 50μM) effectively inhibited adipocyte differentiation and fat accumulation, whereas it stimulated glucose uptake compared with the control in 3T3-L1 cells. cDIVK significantly increased AMPK activation and suppressed protein and mRNA expression of major adipogenic transcriptional factors such as C/EBPα, PPARγ and SREBP-1c in 3T3-L1 cells...
October 1, 2016: Bioorganic & Medicinal Chemistry Letters
Nisha Shabnam, P Sharmila, P Pardha Saradhi
Owing to wide range of applications, nanotechnology is growing expeditiously. Likely negative impact of nanoparticles, which are inevitably released into our surroundings, on living organisms is of growing concern. Findings presented here are outcome of investigations carried to evaluate impact of ionic and nanoparticle speciation states of silver on light harnessing photosynthetic events in Spirodela polyrhiza fronds. Fronds exposed to ionic speciation state showed significant decline in PS II efficiency (Fv/Fm), while those exposed to Ag-NPs showed marginal decline...
August 2, 2016: International Journal of Phytoremediation
Eunji Kim, Myoung Chong Song, Myoun Su Kim, Ji Yoon Beom, Eun Yeol Lee, Dong-Myung Kim, Sang-Jip Nam, Yeo Joon Yoon
The S-adenosyl-l-methionine-dependent O-methyltransferases TylE and TylF catalyze the last two methylation reactions in the tylosin biosynthetic pathway of Streptomyces fradiae. It has long been known that the TylE-catalyzed C2‴-O-methylation of the 6-deoxy-d-allose bound to demethylmacrocin or demethyllactenocin precedes the TylF-catalyzed C3‴-O-methylation of the d-javose (C2‴-O-methylated 6-deoxy-d-allose) attached to macrocin or lactenocin. This study reveals the unexpected substrate promiscuity of TylE and TylF responsible for the biosynthesis of d-mycinose (C3‴-O-methylated d-javose) in tylosin through the identification of a new minor intermediate 2‴-O-demethyldesmycosin (2; 3‴-methyl-demethyllactenocin), which lacks a 2‴-O-methyl group on the mycinose moiety of desmycosin, along with 2‴-O-demethyltylosin (1; 3‴-methyl-demethylmacrocin) that was previously detected from the S...
August 26, 2016: Journal of Natural Products
Chung Jun Lee, Jip Kim, Taegyu Kim
Heterogeneous catalytic processes have been used to produce hydrogen from hydrocarbons. However, high reforming temperature caused serious catalyst deteriorations and low energy efficiency. Recently, a plasma-catalyst hybrid process was used to reduce the reforming temperature and to improve the stability and durability of reforming catalysts. Effect of electric discharges on properties of nanoparticulate catalysts for plasma-catalysis was investigated in the present study. Catalyst-bed porosity was varied by packing catalyst beads with the different size in a reactor...
February 2016: Journal of Nanoscience and Nanotechnology
Foeke J H Nauta, Jip L Tolenaar, Himanshu J Patel, Jehangir J Appoo, Thomas T Tsai, Nimesh D Desai, Daniel G Montgomery, Firas F Mussa, Gilbert R Upchurch, Rosella Fattori, G Chad Hughes, Christoph A Nienaber, Eric M Isselbacher, Kim A Eagle, Santi Trimarchi
BACKGROUND: Optimal management of acute type B aortic dissection with retrograde arch extension is controversial. The effect of retrograde arch extension on operative and long-term mortality has not been studied and is not incorporated into clinical treatment pathways. METHODS: The International Registry of Acute Aortic Dissection was queried for all patients presenting with acute type B dissection and an identifiable primary intimal tear. Outcomes were stratified according to management for patients with and without retrograde arch extension...
July 14, 2016: Annals of Thoracic Surgery
Gausiya Bashri, Parul Parihar, Rachana Singh, Samiksha Singh, Vijay Pratap Singh, Sheo Mohan Prasad
The present study was undertaken to evaluate Cr(VI) toxicity tolerance in two Amaranthus species viz. Amaranthus viridis and Amaranthus cruentus exposed to hexavalent chromium [Cr(VI)] stress. To ascertain this, both Amaranthus species were grown under various concentrations (0, 10 and 50 μM) of Cr(VI) in the hydroponic system. After 7 days of Cr(VI) treatment, various traits such as growth, Cr accumulation, photochemistry of photosystem II (PS II) (JIP-test), oxidative stress and antioxidant defense system were analyzed...
June 27, 2016: Plant Physiology and Biochemistry: PPB
Jeong-Tae Yeon, Hiyoung Kim, Kwang-Jin Kim, Jihye Lee, Dong Hwan Won, Sang-Jip Nam, Seong Hwan Kim, Heonjoong Kang, Young-Jin Son
A new inhibitor, acredinone C (1), of receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclast differentiation was isolated from the culture broth of the fungus Acremonium sp. (F9A015) along with acredinones A (2) and B (3). The structure of acredinone C (1), which incorporates benzophenone and xanthone moieties, was established by the analyses of combined spectroscopic data including 1D and 2D NMR and MS. All of the acredinones studied efficiently inhibited the RANKL-induced formation of TRAP(+)-MNCs in a dose-dependent manner without any cytotoxicity up to 10 μM...
July 22, 2016: Journal of Natural Products
Jip L Tolenaar, Jean P DE Vries
No abstract text is available yet for this article.
October 2016: Journal of Cardiovascular Surgery
Yi Soo Kim, Sung Joong Lee, Jin Young Choi, Yun-Hi Kim, Kebede Taye Desta, Zhe Piao, Su-Lim Choi, Sang-Jip Nam, Kyung-Yun Kang, A M Abd El-Aty, Yong Chul Shin, Sung Chul Shin
β-N-acetylglucosamine (β-AG) is a monosaccharide distributed widely in living organisms with various pivotal roles. The presence of particulates and impurities can affect the safety and efficacy of a product for its intended duration of use. Thus, the current study was carried out to identify and quantify the potentially-harmful process related impurities; namely α-N,6-diacetylglucosamine (α-DAG) and α-N-acetylglucosamine (α-AG), derived from the chemical and enzymatic synthesis of β-AG. The impurities were characterized using a high resolution mass spectrometry, a nuclear magnetic resonance spectroscopy, and liquid chromatography-tandem mass spectrometry (LC/MS/MS)...
July 2016: Archives of Pharmacal Research
Qingling Xu, Cheol Ho Heo, Jin A Kim, Hye Sue Lee, Ying Hu, Dayoung Kim, Kunemadihalli Mathada Kotraiah Swamy, Gyoungmi Kim, Sang-Jip Nam, Hwan Myung Kim, Juyoung Yoon
Hypochlorite (OCl(-)) plays a key role in the immune system and is involved in various diseases. Accordingly, direct detection of endogenous OCl(-) at the subcellular level is important for understanding inflammation and cellular apoptosis. In the current study, a two-photon fluorescent off/on probe (PNIS) bearing imidazoline-2-thione as an OCl(-) recognition unit and triphenylphosphine (TPP) as a mitochondrial-targeting group was synthesized and examined for its ability to image mitochondrial OCl(-) in situ...
June 21, 2016: Analytical Chemistry
Aoyue Bi, Jibiao Fan, Zhengrong Hu, Guangyang Wang, Erick Amombo, Jinmin Fu, Tao Hu
Quality inferiority in cool-season turfgrass due to drought, heat, and a combination of both stresses is predicted to be more prevalent in the future. Understanding the various response to heat and drought stress will assist in the selection and breeding of tolerant grass varieties. The objective of this study was to investigate the behavior of antioxidant metabolism and photosystem II (PSII) photochemistry in two tall fescue genotypes (PI 234881 and PI 578718) with various thermotolerance capacities. Wide variations were found between heat-tolerant PI 578718 and heat-sensitive PI 234881 for leaf relative water content, malondialdehyde and electrolyte leakage under drought, high-temperature or a combination of both stresses...
2016: Frontiers in Plant Science
Tu Cam Le, Inho Yang, Yeo Joon Yoon, Sang-Jip Nam, William Fenical
Further chemical investigation of a marine-derived bacterium of the genus Streptomyces has led to the isolation of ansalactams B-D (1-3) along with the previously reported metabolite ansalactam A (4). Ansalactams B-D are significantly modified ansamycins, representing three new carbon skeletons and further illustrating the biosynthetic plasticity of the ansalactam class. Unlike ansalactam A, ansalactams B and D are penta- and hexacyclic metabolites, while ansalactam C illustrates an open polyene chain with a terminal carboxylic acid...
May 6, 2016: Organic Letters
Andor F van den Hoven, Manon N G J A Braat, Jip F Prince, Pieter J van Doormaal, Maarten S van Leeuwen, Marnix G E H Lam, Maurice A A J van den Bosch
OBJECTIVES: To compare right gastric (RGA) and segment 4 artery (A4) origin detection rates during radioembolisation workup between early and late arterial phase liver CT protocols. METHODS: 100 consecutive patients who underwent liver CT between May 2012-January 2015 with early or late arterial phase protocol (n = 50 each, 10- vs. 20-s post-threshold delay) were included. RGA/A4 origin detection rates, assessed by two raters, and contrast-to-noise ratio (CNR) of the hepatic artery relative to the portal vein were compared between the protocols...
April 23, 2016: European Radiology
Xiangliang Pan, Xi Chen, Daoyong Zhang, Jianlong Wang, Chunnuan Deng, Guijin Mu, Huaisong Zhu
The inhibitory effect of Cr(VI) on the PSII of Synechocystis sp. was studied. Cr(VI) reduced O2 evolution and inhibited the water-splitting system in PSII. S-states test and flash induction test showed that Cr(VI) exposure increased the proportion of inactivated PSII (PSIIX ) and PSIIβ reaction centers, which increased the fluxes of dissipated energy. JIP test and QA (-) reoxidation test demonstrated that Cr(VI) treatment induces inhibition of electron transport from QA (-) to QB /QB (-) and accumulation of P680 (+) ...
April 2009: Journal of Phycology
Digna de Kam, Jip F Kamphuis, Vivian Weerdesteyn, Alexander C H Geurts
BACKGROUND: In people with lateralized disorders, such as stroke, Weight-Bearing Asymmetry (WBA) is common. It is associated with postural instability, however, WBA is one of several abnormalities that may affect postural stability in these disorders. Therefore, we investigated the isolated effects of WBA on dynamic postural stability in healthy individuals. METHODS: Ten young participants were subjected to multidirectional stance perturbations by support surface translations at three levels of WBA (0, 10 and 20% of body weight unloading of one leg)...
March 2016: Gait & Posture
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