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https://www.readbyqxmd.com/read/29045918/cervical-cancer-cells-hela-response-to-photodynamic-therapy-using-a-zinc-phthalocyanine-photosensitizer
#1
Natasha Hodgkinson, Cherie Ann Kruger, Mpho Mokwena, Heidi Abrahamse
Cervical cancer is the most common gynecological malignancy worldwide, and the leading cause of cancer related deaths among females. Conventional treatment for early cervical cancer is radical hysterectomy. In locally advanced cancer the treatment of choice is concurrent chemo radiation. Although such treatment methods show promise, they do have adverse side effects. To minimize these effects, as well as prevent cancer re-occurrence, new treatment methods are being investigated. Photodynamic therapy (PDT) involves the selective uptake of a photosensitizer (PS) by cancer cells, illumination with light of an appropriate wavelength that triggers a photochemical reaction leading to the generation of reactive oxygen and subsequent tumor regression...
October 4, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29045028/biological-effects-of-er-yag-laser-irradiation-on-the-proliferation-of-primary-human-gingival-fibroblasts
#2
Sophannary Kong, Akira Aoki, Kengo Iwasaki, Koji Mizutani, Sayaka Katagiri, Tomonari Suda, Shizuko Ichinose, Mayumi Ogita, Verica Pavlic, Yuichi Izumi
We investigated the biological effects of Er:YAG laser (2,940-nm; DELight(®) , HOYA ConBio, USA) irradiation at fluences of 3.6, 4.2, 4.9, 6.3, 8.1, or 9.7 J cm(-2) at 20 or 30 Hz for 20 or 30 s on primary human gingival fibroblasts (HGFs). Irradiation at 6.3 J cm(-2) promoted maximal cell proliferation, determined by WST-8 assay and crystal violet staining, but was accompanied by lactate dehydrogenase release, on day 3 post-irradiation. Elevation of ATP level, Ki67 staining, and cyclin-A2 mRNA expression confirmed that Er:YAG affected the cell cycle and increased the number of proliferating cells...
October 17, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/29044893/tsynthetic-klebsiella-pneumoniae-shewanella-oneidensis-consortium-enables-glyc-erol-fed-high-performance-microbial-fuel-cells
#3
Feng Li, Changji Yin, Liming Sun, Yuanxiu Li, Xuewu Guo, Hao Song
Microbial fuel cell (MFC) is an eco-friendly bio-electrochemical system that uses mi-croorganism as biocatalyst to convert biomass into electricity. Glycerol, as a waste in the biodiesel refinery processes, is an appealing substrate for MFC. Nevertheless, glycerol cannot be utilized as carbon source by well-known exoelectrogens such as Shewanella oneidensis. Herein, to generate electricity by rapidly harnessing glycerol, we rationally constructed a Klebsiella pneumoniae-Shewanella oneidensis microbial consortium to efficiently harvest electricity from glycerol, in which K...
October 18, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/29044496/ncctg-n0879-alliance-a-randomized-phase-2-cooperative-group-trial-of-carboplatin-paclitaxel-and-bevacizumab%C3%A2-%C3%A2-%C3%A2-everolimus-for-metastatic-melanoma
#4
Robert R McWilliams, Jacob B Allred, Jessica A Slostad, Rajini Katipamula, Roxana S Dronca, Kandelaria M Rumilla, Lori A Erickson, Alan H Bryce, Richard W Joseph, Lisa A Kottschade, David M King, John M Leitch, Svetomir N Markovic
BACKGROUND: Despite the success of immune checkpoint and targeted therapy, many patients with melanoma ultimately require further treatment. The combination of carboplatin, paclitaxel, and bevacizumab (CPB) has demonstrated promising activity in a single-arm study. In the current study, the authors performed a randomized phase 2 study to confirm efficacy and to determine whether adding everolimus would increase the activity of the combination. METHODS: Through the North Central Cancer Treatment Group, a total of 149 patients with unresectable AJCC 6th edition stage IV melanoma were randomized from May 2010 to May 2014 to either CPB or CPB with everolimus (CPBE)...
October 17, 2017: Cancer
https://www.readbyqxmd.com/read/29043790/emissive-synthetic-cofactors-an-isomorphic-isofunctional-and-re-sponsive-nad-analogue
#5
Alexander R Rovira, Andrea Fin, Yitzhak Tor
The synthesis, photophysics, and biochemical utility of a new fluorescent NAD(+) analogue based on an isothiazolo[4,3-d]pyrimidine core (N(tz)AD(+)) are described. Enzymatic reactions, photophysically monitored in real time, show N(tz)AD(+) and N(tz)ADH to be substrates for yeast alcohol dehydrogenase and lactate dehydrogenase, respectively, with reaction rates comparable to that of the native cofactors. As the emissive N(tz)AD(+) is converted to the corresponding N(tz)ADH, a drop in fluorescence occurs, displaying complementary photophysical behavior to that of the native NAD(+)/NADH...
October 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29042839/a-retrospective-study-on-infusion-related-reactions-to-rituximab-in-a-heterogeneous-pediatric-population
#6
Clément Legeay, Henrique Bittencourt, Elie Haddad, Laurence Spiesser-Robelet, Valérie Thépot-Seegers, Roxane Therrien
OBJECTIVES: To assess risks and outcomes of infusion-related reactions to rituximab in a heterogeneous pediatric population. METHODS: All patients who received rituximab between July 2010 and July 2012 were retrieved from the pharmacy software and included for analysis. Data were collected according to 4 categories: demographic data, infusion data, infusion-related reactions, and biological data considered as risk factors (i.e., absolute lymphocyte count, lactate dehydrogenase levels)...
September 2017: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/29040016/centella-asiatica-fraction-3-suppresses-the-nuclear-factor-erythroid-2-related-factor-2-anti-oxidant-pathway-and-enhances-reactive-oxygen-species-mediated-cell-death-in-cancerous-lung-a549-cells
#7
Dhaneshree Bestinee Naidoo, Alisa Phulukdaree, Krishnan Anand, Vikash Sewram, Anil Amichund Chuturgoon
Centella asiatica is a tropical medicinal plant that is commonly used in traditional medicine. Medicinal properties of C. asiatica include anti-oxidant, anti-inflammatory, and anti-cancer activity. We investigated the anti-oxidant and anti-proliferative/cytotoxic effects of a semi-purified fraction of C. asiatica ethanolic leaf extract (C3) in cancerous lung A549 cells. C3 was obtained by silica column fractionation and identified by using thin-layer chromatography and gas chromatography mass spectrometry. Cytotoxicity of C3 in A549 cells was evaluated (cell viability assay-WST-1; 24 h; [0...
October 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29039534/apurinic-apyrimidinic-endonuclease-1-ape1-contributes-to-resveratrol%C3%A2-induced-neuroprotection-against-oxygen%C3%A2-glucose-deprivation-and-re%C3%A2-oxygenation-injury-in-ht22-cells-involvement-in-reducing-oxidative-dna-damage
#8
Jiao-Ying Jia, Zhi-Gang Tan, Min Liu, Yu-Gang Jiang
Resveratrol, a naturally occurring polyphenolic compound, exhibits a neuroprotective role in models of central nervous system diseases, including cerebral ischemia/reperfusion injury. Apurinic/apyrimidinic endonuclease 1 (APE1) is a multifunctional enzyme that contributes to base excision repair of oxidative DNA damage and redox activation of transcription factors, associated with neuronal survival against hypoxic‑ischemic injury. It was hypothesized that resveratrol protects HT22 cells against oxygen‑glucose deprivation and re‑oxygenation (OGD/R)‑induced injuries through upregulation of APE1...
October 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039526/promoting-effects-of-il%C3%A2-23-on-myocardial-ischemia-and-reperfusion-are-associated-with-increased-expression-of-il%C3%A2-17a-and-upregulation-of-the-jak2%C3%A2-stat3-signaling-pathway
#9
Yanxi Liao, Xiaorong Hu, Xin Guo, Bofang Zhang, Weipan Xu, Hong Jiang
Interleukin (IL)‑23, as a novel pro‑inflammatory cytokine, is important in several inflammatory diseases, including myocardial ischemia and reperfusion (I/R) injury, however, the underlying mechanism remains to be elucidated. The present study was designed to investigate the specific role of IL‑23 in myocardial I/R injury, and whether the Janus kinase 2/signal transducer and activator of transcription 3 (JAK2‑STAT3) signaling pathway, one of the important downstream signaling pathways of IL‑23, and the IL‑17A downstream pro‑inflammatory cytokine, were involved...
October 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039499/an-investigation-of-methyl-tert%C3%A2-butyl-ether%C3%A2-induced-cytotoxicity-and-protein-profile-in-chinese-hamster-ovary-cells
#10
Guangshan Xie, Wen-Xu Hong, Li Zhou, Xifei Yang, Haiyan Huang, Desheng Wu, Xinfeng Huang, Weiguo Zhu, Jianjun Liu
Methyl tert-butyl ether (MTBE) is widely used as an oxygenating agent in gasoline to reduce harmful emissions. However, previous studies have demonstrated that MTBE is a cytotoxic substance that has harmful effects in vivo and in vitro. Although remarkable progress has been made in elucidating the mechanisms underlying the MTBE‑induced reproductive toxicological effect in different cell lines, the precise mechanisms remain far from understood. The present study aimed to evaluate whether mammalian ovary cells were sensitive to MTBE exposure in vitro by assessing cell viability, lactate dehydrogenase (LDH) leakage, malondialdehyde (MDA) content and antioxidant enzyme activities...
October 11, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29038973/production-of-ethylene-glycol-or-glycolic-acid-from-d-xylose-in-saccharomyces-cerevisiae
#11
Laura Salusjärvi, Mervi Toivari, Maija-Leena Vehkomäki, Outi Koivistoinen, Dominik Mojzita, Klaus Niemelä, Merja Penttilä, Laura Ruohonen
The important platform chemicals ethylene glycol and glycolic acid were produced via the oxidative D-xylose pathway in the yeast Saccharomyces cerevisiae. The expression of genes encoding D-xylose dehydrogenase (XylB) and D-xylonate dehydratase (XylD) from Caulobacter crescentus and YagE or YjhH aldolase and aldehyde dehydrogenase AldA from Escherichia coli enabled glycolic acid production from D-xylose up to 150 mg/L. In strains expressing only xylB and xylD, 29 mg/L 2-keto-3-deoxyxylonic acid [(S)-4,5-dihydroxy-2-oxopentanoic acid] (2K3DXA) was produced and D-xylonic acid accumulated to ca...
October 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29038927/novel-strategy-for-phenyllactic-acid-biosynthesis-from-phenylalanine-by-whole-cell-recombinant-escherichia-coli-coexpressing-l-phenylalanine-oxidase-and-l-lactate-dehydrogenase
#12
Jianzhi Zhang, Xi Li
OBJECTIVES: To enhance the efficiency of phenyllactic acid (PLA) production from L-phenylalanine (L-Phe) by introducing a novel artificial pathway into Escherichia coli RESULTS: The production of PLA from L-Phe by recombinant E. coli (ldh-lpox) coexpressing L-phenylalanine oxidase and L-lactate dehydrogenase was studied. The new PLA synthesis pathway was confirmed to be efficient in recombinant E. coli. Subsequently, two different biocatalyst processes were carried out and optimized for PLA production...
October 16, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/29037390/effect-of-feeding-rumen-protected-capsule-containing-niacin-k2so4-vitamin-c-and-gamma-aminobutyric-acid-on-heat-stress-and-performance-of-dairy-cows
#13
W J Guo, L Zhen, J X Zhang, S Lian, H F Si, J R Guo, H M Yang
This study was conducted to evaluate the effects of supplemental rumen-protected capsule (RPC) on animal performance, serological indicators, and serum heat shock protein 70 (HSP70) of lactating Holstein cows under heat stress (HS). During summer months, 30 healthy multiparous lactating Holstein cows with a parity number of 3.1 ± 0.44, 70 ± 15 d in milk, an average body weight of 622 ± 62kg, and an average milk yield of 32.28 ± 0.96kg/d, were used. The cows were randomly allocated to two groups: a control group and an RPC-supplemented group (0...
October 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29035870/oxidative-stress-and-cytotoxicity-elicited-lipid-peroxidation-in-hemocytes-of-bombyx-mori-larva-infested-with-dipteran-parasitoid-exorista-bombycis
#14
Makwana Pooja, Appukuttan Nair R Pradeep, Shambhavi P Hungund, Chandrashekhar Sagar, Kangayam M Ponnuvel, Arvind K Awasthi, Kanika Trivedy
Parasitization of silkworm, Bombyx mori by invasive larva of dipteran parasitoid Exorista bombycis caused upto 20% revenue loss in sericulture. The parasitism was successful by suppressing host immune system however mechanism of immune suppression induced by E. bombycis is unknown which is unravelled here. The infestation induced cytotoxic symptoms in host hemocytes, such as vacuolated cytoplasm, porous plasma membrane, indented nuclei with condensed chromatin and dilated RER. One of the markers of necrosis is cell permeabilization, which can be measured as released lactate dehydrogenase (LDH)...
December 20, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/29035826/effects-of-gallic-acid-on-hemodynamic-parameters-and-infarct-size-after-ischemia-reperfusion-in-isolated-rat-hearts-with-alloxan-induced-diabetes
#15
Fatemeh Ramezani-Aliakbari, Mohammad Badavi, Mahin Dianat, Seyed Ali Mard, Akram Ahangarpour
Diabetic rats are more susceptible to myocardial ischemia-reperfusion injury than control rats. The aim of the present study was to evaluate the cardioprotective effect of gallic acid (GA) on isolated rat hearts with alloxan-induced diabetes mellitus. Adult male Sprague-Dawley rats were divided randomly into three groups: control, untreated diabetic and diabetic animals treated with (GA, 25mg/kg). Diabetes was induced by 120mg/kg alloxan injection. Eight weeks after GA administration, the hearts were isolated and exposed to myocardial ischemia-reperfusion...
October 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29035436/cardioprotective-effect-of-the-sdf-1%C3%AE-cxcr4-axis-in-ischemic-postconditioning-in-isolated-rat-hearts
#16
Jeong Su Kim, Youngho Jang, June Hong Kim, Yong Hyun Park, Sun Ae Hwang, Jun Kim, Sung Ryul Lee, Zhelong Xu, Changill Ban, Kyohan Ahn, Kook Jin Chun
BACKGROUND AND OBJECTIVES: Information about the role of the stromal cell-derived factor-1α (SDF-1α)/chemokine receptor type 4 (CXCR4) axis in ischemic postconditioning (IPOC) is currently limited. We hypothesized that the SDF-1α/CXCR4 signaling pathway is directly involved in the cardioprotective effect of IPOC. METHODS: Isolated rat hearts were divided into four groups. The control group was subjected to 30-min of regional ischemia and 2-hour of reperfusion (n=12)...
September 18, 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/29034301/effects-of-one-directional-pneumatic-tube-system-on-routine-hematology-and-chemistry-parameters-a-validation-study-at-a-tertiary-care-hospital
#17
A-Jin Lee, Hun Suk Suh, Chang-Ho Jeon, Sang-Gyung Kim
BACKGROUND: The validation of sample stability through pneumatic tube system (PTS) is essential. The objective of this study was to evaluate the effects of PTS transportation on laboratory results. METHODS: Paired EDTA and SST blood samples were collected from 56 randomly selected patients. Laboratory parameters were compared between PTS group and hand-delivered group. RESULTS: No statistical differences were observed for complete blood counts, white blood cell differential parameters, erythrocyte sedimentation rate and most chemistry parameters between PTS and hand-delivered transport procedures...
December 2017: Pract Lab Med
https://www.readbyqxmd.com/read/29034199/cardioprotective-effects-of-achillea-wilhelmsii-on-the-isolated-rat-heart-in-ischemia-reperfusion
#18
M Mahmoudabady, M Lashkari, S Niazmand, M Soukhtanloo
CONTEXT: There are some reports about protective effects of Achillea on the heart. OBJECTIVE: We investigated the effect of Achillea wilhelmsii extract on cardiac function during ischemia-reperfusion (I/R) injury in the isolated rat heart. MATERIALS AND METHODS: 60 male Wistar rats were randomly divided into 6 groups; 1: Control group, 2: Control-ischemia (CI) 3: vitamin C (10 mg/kg), 4-6: Extract groups (E 100, E 200 and E 400 mg/kg). The animals received normal saline, vitamin C or A...
October 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29033844/syngeneic-b16f10-melanoma-causes-cachexia-and-impaired-skeletal-muscle-strength-and-locomotor-activity-in-mice
#19
Fabrício A Voltarelli, Fernando T Frajacomo, Camila de Souza Padilha, Mayra T J Testa, Paola S Cella, Diogo F Ribeiro, Donizete X de Oliveira, Luciana C Veronez, Gabriela S Bisson, Felipe A Moura, Rafael Deminice
Muscle wasting has been emerging as one of the principal components of cancer cachexia, leading to progressive impairment of work capacity. Despite early stages melanomas rarely promotes weight loss, the appearance of metastatic and/or solid tumor melanoma can leads to cachexia development. Here, we investigated the B16F10 tumor-induced cachexia and its contribution to muscle strength and locomotor-like activity impairment. C57BL/6 mice were subcutaneously injected with 5 × 10(4) B16F10 melanoma cells or PBS as a Sham negative control...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29033558/effect-of-surface-organic-coatings-of-cellulose-nanocrystals-on-the-viability-of-mammalian-cell-lines
#20
Ambar S Jimenez, Francesca Jaramillo, Usha D Hemraz, Yaman Boluk, Karina Ckless, Rajesh Sunasee
Cellulose nanocrystals (CNCs) have emerged as promising candidates for a number of bio-applications. Surface modification of CNCs continues to gain significant research interest as it imparts new properties to the surface of the nanocrystals for the design of multifunctional CNCs-based materials. A small chemical surface modification can potentially lead to drastic behavioral changes of cell-material interactions thereby affecting the intended bio-application. In this work, unmodified CNCs were covalently decorated with four different organic moieties such as a diaminobutane fragment, a cyclic oligosaccharide (β-cyclodextrin), a thermoresponsive polymer (poly[N-isopropylacrylamide]), and a cationic aminomethacrylamide-based polymer using different synthetic covalent methods...
2017: Nanotechnology, Science and Applications
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