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https://www.readbyqxmd.com/read/29454249/dft-study-of-electron-absorption-and-emission-spectra-of-pyramidal-lnpc-oac-complexes-of-some-lanthanide-ions-in-the-solid-state
#1
J Hanuza, P Godlewska, R Lisiecki, W Ryba-Romanowski, P Kadłubański, J Lorenc, A Łukowiak, L Macalik, Yu Gerasymchuk, J Legendziewicz
The electron absorption and emission spectra were measured for the pyramidal LnPc(OAc) complexes in the solid state and co-doped in silica glass, where Ln=Er, Eu and Ho. The theoretical electron spectra were determined from the quantum chemical DFT calculation using four approximations CAM-B3LYP/LANL2DZ, CAM-B3LYP/CC-PVDZ, B3LYP/LANL2DZ and B3LYP/CC-PVDZ. It was shown that the best agreement between the calculated and experimental structural parameters and spectroscopic data was reached for the CAM-B3LYP/LANL2DZ model...
January 4, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29454110/study-of-lipid-metabolism-by-estimating-the-fat-fraction-in-different-breast-tissues-and-in-various-breast-tumor-sub-types-by-in-vivo-1-h-mr-spectroscopy
#2
Khushbu Agarwal, Uma Sharma, Sandeep Mathur, Vurthaluru Seenu, Rajinder Parshad, Naranamangalam R Jagannathan
PURPOSE: To evaluate the utility of fat fraction (FF) for the differentiation of different breast tissues and in various breast tumor subtypes using in vivo proton ( 1 H) magnetic resonance spectroscopy (MRS). METHODS: 1 H MRS was performed on 68 malignant, 35 benign, and 30 healthy volunteers at 1.5 T. Malignant breast tissues of patients were characterized into different subtypes based on the differences in the expression of hormone receptors and the FF was calculated...
February 14, 2018: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29453988/silencing-calreticulin-gene-might-protect-cardiomyocytes-from-angiotensin-ii-induced-apoptosis
#3
Wen Zhang, Zhiyue Liu, Yanmei Zhang, Qinxue Bao, Wenchao Wu, He Huang, Xiaojing Liu
AIMS: Calreticulin (CRT), as a chaperone, contributes to protein folding and quality control cycle. CRT is an important factor regulating Ca 2+ that participates in cell apoptosis. However, the function of CRT in the heart is still controversial. Therefore, we aimed to investigate the potential role of CRT in angiotensin II-induced cardiomyocytes apoptosis. MAIN METHODS: Primary cultured neonatal cardiomyocytes were stimulated with angiotensin II to induce the apoptosis...
February 14, 2018: Life Sciences
https://www.readbyqxmd.com/read/29453971/prediction-value-of-serum-hbv-large-surface-protein-in-different-phases-of-hbv-infection-and-virological-response-of-chronic-hepatitis-b-patients
#4
Can Liu, Wennan Wu, Hongyan Shang, Sheng Lin, Zhen Xun, Er Huang, Jinpiao Lin, Bin Yang, Qishui Ou
BACKGROUND: Serum HBV large surface protein (HBV-LP) is an envelope protein that has a close relationship with HBV DNA level. This study is to explore the prediction value of HBV-LP in different phase of HBV infection and during antiviral therapy in chronic hepatitis B (CHB) patients. METHODS: A retrospective study was conducted in 2033 individuals, which included 1677 HBV infected patients in different phases and 356 healthy controls. HBV-LP, HBV serum markers and HBV DNA were detected by ELISA, CMIA and qRT-PCR, respectively...
February 14, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29453923/magnesium-upregulates-insulin-receptor-and-glucose-transporter-4-in-streptozotocin-nicotinamide-induced-type-2-diabetic-rats
#5
Ayodele Olufemi Morakinyo, Titilola Aderonke Samuel, Daniel Abiodun Adekunbi
OBJECTIVE: We investigated the effects of magnesium supplementation on glucose tolerance, insulin sensitivity, oxidative stress as well as the concentration of insulin receptor and glucose transporter-4 in streptozotocin-nicotinamide induced type-2 diabetic (T2D) rats. METHODS: Rats were divided into four groups designated as: 1) control (CTR); 2) diabetic untreated (DU); 3) diabetic treated with 1 mg of Mg/kg diet (Mg1-D); and 4) diabetic treated with 2 mg of Mg/kg diet (Mg2-D)...
January 1, 2018: Endocrine Regulations
https://www.readbyqxmd.com/read/29453921/changes-in-erythrocyte-deformability-during-day-and-possible-role-of-melatonin
#6
Rastislav Vazan, Katarina Plauterova, Gabriela Porubska, Jana Radosinska
OBJECTIVES: The deformability of erythrocytes is their ability to change shape in order to pass through the capillaries. Th is is necessary for quality of microcirculation and sufficient delivery of oxygen to the tissues. Th e aim of our study was to investigate the possible spontaneous changes in the erythrocyte deformability during day and evaluation of the possible direct effects of melatonin (hormone involved in regulation of biorhythms) on the erythrocyte deformability. METHODS: Samples of capillary blood were taken from 12 healthy volunteers in the morning (8:00) and early in the evening (16:30)...
January 1, 2018: Endocrine Regulations
https://www.readbyqxmd.com/read/29453920/effect-of-trans-chalcone-on-hepatic-il-8-through-the-regulation-of-mir-451-in-male-rats
#7
Elham Karimi-Sales, Sajad Jeddi, Arshad Ghaffari-Nasab, Mina Salimi, Mohammad Reza Alipour
OBJECTIVE: Trans-chalcone is a chalcone with hepatoprotective and anti-inflammatory effects. However, the mechanism of these positive effects, especially on miR-451 as an inflammatory regulator, is poorly understood. In this regard, this microRNA (miRNA) acts by inhibition of hepatic interleukin-8 (IL-8) production in the liver which is one of the main proinflammatory cytokines. Th is study for the first time examined the effect of trans-chalcone on miR-451/IL-8 pathway. METHODS: In present study, 21 male rats were randomly divided into 3 groups (n=7 per each group): control which received solvent (NS), groups 2 (N2T) and 3 (N6T), which received transchalcone for 2 and 6 weeks, respectively...
January 1, 2018: Endocrine Regulations
https://www.readbyqxmd.com/read/29453900/downregulation-of-reticulocalbin-1-differentially-facilitates-apoptosis-and-necroptosis-in-human-prostate-cancer-cells
#8
Xiaofei Liu, Nianzhao Zhang, Dawei Wang, Deyu Zhu, Quan Yuan, Xiulei Zhang, Lilin Qian, Huanmin Niu, Yi Lu, Guijie Ren, Keli Tian, Huiqing Yuan
Reticulocalbin 1 (RCN1), an endoplasmic reticulum (ER)-resident Ca 2+ -binding protein, is dysregulated in cancers, but its pathophysiological roles are largely unclear. Here, we demonstrate that RCN1 is overexpressed in clinical prostate cancer (PCa) samples, associated with Cyclin B, not Cyclin D1 expression, compared to that of benign tissues in a Chinese Han population. Downregulation of endogenous RCN1 significantly suppresses PCa cell viability and arrests the cell cycles of DU145 and LNCaP cells at the S and G2/M phases, respectively...
February 17, 2018: Cancer Science
https://www.readbyqxmd.com/read/29453473/prehospital-events-in-st-elevation-myocardial-infarction-undergoing-primary-angioplasty
#9
Sachin Dhungel, Rabi Malla, Chandramani Adhikari, Arun Maskey, Rajeeb Rajbhandari, Ranjit Sharma, Deewakar Sharma, Man Bhadhur Kc, Ajay Adhikari, Binaya Rauniyar, Dipak Limbu, Milan Gautam
INTRODUCTION: Pre-hospital delay includes time from onset of symptoms of myocardial infarction till arrival to emergency room of the hospital. This defines time from symptom onset to first medical contact and first medical contact to emergency room. This study aims to study the prehospital events and determining factors in patients undergoing primary angioplasty. METHODS: This was a cross sectional study in Shahid Gangalal National Heart Centre for three months...
October 2017: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/29453409/a-potential-prognostic-long-noncoding-rna-signature-to-predict-recurrence-among-er-positive-breast-cancer-patients-treated-with-tamoxifen
#10
Kang Wang, Jie Li, Yong-Fu Xiong, Zhen Zeng, Xiang Zhang, Hong-Yuan Li
Limited predictable long noncoding RNA (lncRNA) signature was reported in tamoxifen resistance among estrogen receptor (ER)-positive breast cancer (BC) patients. The aim of this study was to identify and assess prognostic lncRNA signature to predict recurrence among ER-positive BC patients treated with tamoxifen. Cohorts from Gene Expression Omnibus (GEO) (n = 298) and The Cancer Genome Atlas (TCGA) (n = 160) were defined as training and validation cohort, respectively. BC relapse associated lnRNAs was identify within training cohort, and the predictable value of recurrence was assessed in both cohorts...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453314/ar-expression-in-breast-cancer-ctcs-associates-with-bone-metastases
#11
Nicola Aceto, Aditya Bardia, Ben S Wittner, Maria C Donaldson, Ryan O'Keefe, Amanda Engstrom, Francesca Bersani, Yu Zheng, Valentine Comaills, Kira Niederhoffer, Huili Zhu, Olivia MacKenzie, Toshi Shioda, Dennis Sgroi, Ravi Kapur, David T Ting, Beverly Moy, Sridhar Ramaswamy, Mehmet Toner, Daniel A Haber, Shyamala Maheswaran
Molecular drivers underlying bone metastases in human cancer are not well understood, in part due to constraints in bone tissue sampling. Here, RNA sequencing (RNA-seq) was performed of circulating tumor cells (CTCs) isolated from blood samples of women with metastatic estrogen receptor (ER)+ breast cancer, comparing cases with progression in bone versus visceral organs. Among the activated cellular pathways in CTCs from bone-predominant breast cancer is androgen receptor (AR) signaling. AR gene expression is evident, as is its constitutively active splice variant AR-v7...
February 16, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29453283/chemical-stresses-fail-to-mimic-the-unfolded-protein-response-resulting-from-luminal-load-with-unfolded-polypeptides
#12
Timothy J Bergmann, Ilaria Fregno, Fiorenza Fumagalli, Andrea Rinaldi, Francesco Bertoni, Paul J Boersema, Paola Picotti, Maurizio Molinari
The stress sensors ATF6, IRE1 and PERK monitor deviations from homeostatic conditions in the endoplasmic reticulum (ER), a protein biogenesis compartment of eukaryotic cells. Their activation elicits unfolded protein responses (UPR) to re-establish proteostasis. UPR have been extensively investigated in cells exposed to chemicals that activate ER stress sensors by perturbing calcium, N-glycans or redox homeostasis. Cell responses to variations in luminal load with unfolded proteins are, in contrast, poorly characterized...
February 16, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29452565/serum-vitamin-c-levels-modulate-the-lifespan-and-endoplasmic-reticulum-stress-response-pathways-in-mice-synthesizing-a-nonfunctional-mutant-wrn-protein
#13
Lucie Aumailley, Marie Julie Dubois, Tracy A Brennan, Chantal Garand, Eric R Paquet, Robert J Pignolo, André Marette, Michel Lebel
Werner syndrome (WS) is a premature aging disorder caused by mutations in a RecQ-family DNA helicase (WRN). Mice lacking part of the helicase domain of the WRN ortholog exhibit several phenotypic features of WS. In this study, we generated a Wrn mutant line that, like humans, relies entirely on dietary sources of vitamin C (ascorbate) to survive, by crossing them to mice that lack the gulonolactone oxidase enzyme required for ascorbate synthesis. In the presence of 0.01% ascorbate (w/v) in drinking water, double-mutant mice exhibited a severe reduction in lifespan, small size, sterility, osteopenia, and metabolic profiles different from wild-type (WT) mice...
February 8, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29452364/4-phenylbutyrate-suppresses-the-unfolded-protein-response-without-restoring-protein-folding-in-saccharomyces-cerevisiae
#14
Chi Thanh Mai, Quynh Giang Le, Yuki Ishiwata-Kimata, Hiroshi Takagi, Kenji Kohno, Yukio Kimata
Accumulation of unfolded secretory proteins in the endoplasmic reticulum (ER), namely ER stress, is hazardous to eukaryotic cells and promotes the unfolded protein response (UPR). Ire1 is an ER-located transmembrane protein that senses ER stress and triggers the UPR. According to previous in vitro experiments, 4-phenylbutyrate (4-PBA) works as a chemical molecular chaperone. Since 4-PBA attenuates the UPR in mammalian tissue cultures, this chemical may have clinical potential for restoring ER-stressing conditions...
February 14, 2018: FEMS Yeast Research
https://www.readbyqxmd.com/read/29451989/all-done-procedure-by-laser-in-free-gingival-graft-treatment-a-case-series-study
#15
Reza Fekrazad, Nasim Chiniforush, Katayoun Kalhori
AIM: This case series study evaluated the application of Er;Cr:YSGG laser for a free gingival graft procedure and the effect of low level laser therapy on post surgical pain and wound healing. CASES: 6 cases with mucogingival problems needing free gingival grafts were selected. First, the recipient site was anesthetized and de-epithelialization was done with a Er;Cr:YSGG laser. After tracing the palatal donor site with the laser, the graft was harvested. For root modification of the recipient tooth, conditioning of the dentin was done by the same laser...
February 16, 2018: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/29451814/variability-in-asthma-quality-and-costs-in-children-with-different-medicaid-insurance-plans-in-maricopa-county
#16
Matthew Rank, Natalie Landman, Gevork Harootunian, Michelle Winscott, Neil Jain, Keith Frey, Gena Wilson, Rupali Drewek, Lilia Parra-Roide, Charlton Wilson, Robert Smoldt, Denis Cortese
OBJECTIVE: To describe the variation in asthma quality and costs among children with different Medicaid insurance plans. METHODS: We used 2013 data from the Center for Health Information and Research, which houses a database that includes individuals who have Medicaid insurance in Arizona. We analyzed children ages 2-17 years-old who lived in Maricopa County, Arizona. Asthma medication ratio (AMR, a measure of appropriate asthma medication use), outpatient follow-up within 2 weeks after asthma-related hospitalization (a measure of continuity of care), asthma-related hospitalizations, and all emergency department (ED) visits were the primary quality metrics...
February 16, 2018: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/29451783/sufex-click-chemistry-enabled-late-stage-drug-functionalization
#17
Zilei Liu, Jie Li, Suhua Li, Gencheng Li, K Barry Sharpless, Peng Wu
Sulfur(VI) Fluoride Exchange (SuFEx) is a new family of click chemistry transformations which relies on readily available materials to produce compounds bearing the S VI -F motif. The potential of SuFEx in drug discovery has just started to be explored. We report the first method of SuFEx chemistry for the conversion of phenolic compounds to their respective arylfluorosulfate derivatives in situ in 96-well plates. This method is compatible with automated synthesis and screening to quickly assess the biological activities of the in situ generated, crude products...
February 16, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29451583/an-asymmetric-organocatalytic-vinylogous-mannich-reaction-of-3-methyl-5-arylfuran-2-3h-ones-with-n-2-pyridinesulfonyl-imines-enantioselective-synthesis-of-%C3%AE-amino-%C3%AE-%C3%AE-disubstituted-butenolides
#18
Zhen-Hua Wang, Yong You, Yong-Zheng Chen, Xiao-Ying Xu, Wei-Cheng Yuan
An asymmetric organocatalytic vinylogous Mannich reaction of 3-methyl-5-arylfuran-2(3H)-ones with N-(2-pyridinesulfonyl)imines has been developed with 5 mol% thiourea-tertiary amine as the catalyst. A series of δ-amino γ,γ-disubstituted butenolides bearing adjacent quaternary and tertiary stereocenters are efficiently obtained with satisfactory results (up to 90% yield, 90 : 10 dr, and 95 : 5 er).
February 16, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29451568/upconversion-in-photodynamic-therapy-plumbing-the-depths
#19
Michael R Hamblin
Photodynamic therapy (PDT) involves the combination of non-toxic dyes called photosensitizers (PS) and harmless visible light that interact with ambient oxygen to give reactive oxygen species (ROS) that can damage biomolecules and kill cells. PDT has mostly been developed as a cancer therapy but can also be used as an antimicrobial approach against localized infections. However even the longest wavelength used for exciting PS (in the 700 nm region) has relatively poor tissue penetration, and many PS are much better excited by blue and green light...
February 16, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29451312/yoda-map3k-kinase-regulates-plant-immune-responses-conferring-broad-spectrum-disease-resistance
#20
Sara Sopeña-Torres, Lucía Jordá, Clara Sánchez-Rodríguez, Eva Miedes, Viviana Escudero, Sanjay Swami, Gemma López, Mariola Piślewska-Bednarek, Ines Lassowskat, Justin Lee, Yangnan Gu, Sabine Haigis, Danny Alexander, Sivakumar Pattathil, Antonio Muñoz-Barrios, Pawel Bednarek, Shauna Somerville, Paul Schulze-Lefert, Michael G Hahn, Dierk Scheel, Antonio Molina
Mitogen-activated protein kinases (MAPKs) cascades play essential roles in plants by transducing developmental cues and environmental signals into cellular responses. Among the latter are microbe-associated molecular patterns perceived by pattern recognition receptors (PRRs), which trigger immunity. We found that YODA (YDA) - a MAPK kinase kinase regulating several Arabidopsis developmental processes, like stomatal patterning - also modulates immune responses. Resistance to pathogens is compromised in yda alleles, whereas plants expressing the constitutively active YDA (CA-YDA) protein show broad-spectrum resistance to fungi, bacteria, and oomycetes with different colonization modes...
February 16, 2018: New Phytologist
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