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https://www.readbyqxmd.com/read/29155159/purification-characterization-and-anti-tumor-activities-of-polysaccharides-extracted-from-wild-russula-griseocarnosa
#1
Yang Liu, Jinjin Zhang, Zhaoli Meng
The anti-tumor activity of a novel polysaccharide, PRG1-1, obtained from Russula griseocarnosa sporocarp was investigated in this paper. PRG1-1 has a molecular weight of 630kDa and was extracted and purified using DEAE-cellulose and gel filtration chromatography from crude polysaccharide extract of R. griseocarnosa sporocarp. PRG1-1 was composed of glucose, galactose, mannose, xylose and fructose, in a molar ratio of 66.5:29.2:3.17: 0.663:0.447, respectively. Purified PRG1-1 significantly reduced cell viability, increased the production of lactate dehydrogenase (LDH) and reactive oxygen species (ROS), and enhanced the apoptotic rate in HeLa and SiHa cells...
November 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29154783/involvement-of-monocarboxylate-transporter-1-slc16a1-in-the-uptake-of-l-lactate-in-human-astrocytes
#2
Masaya Ideno, Masaki Kobayashi, Shotaro Sasaki, Yuya Futagi, Katsuya Narumi, Ayako Furugen, Ken Iseki
PURPOSE: Astrocytes, the most abundant glial cells in the central nervous system (CNS), help neurons survive Monocarboxylate transporters (MCTs) are reported to transport l-lactate, which is important for CNS physiology and cognitive function. However, it remains unclear which MCT isoform is functionally expressed by human astrocytes. The aim of this study was to establish the contribution of each MCT isoform to l-lactate transport in human astrocytes. METHODS: The function of l-lactate transport was studied using NHA cells as a human astrocyte model and radiolabeled l-lactate...
November 14, 2017: Life Sciences
https://www.readbyqxmd.com/read/29153768/workplace-lactation-programs-in-small-wic-service-sites-a-potential-model
#3
Michelle A Angeletti, Jose R Llossas
The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) has an opportunity to protect, promote, and support breastfeeding by implementing and modeling workplace lactation programs in small WIC agencies that may have barriers regarding the lack of both human and financial resources. The goal of this article was to describe effective strategies for agency administrators in small WIC service sites so that they can reduce barriers, successfully implement workplace lactation policies and programs, and model successful strategies for other small employers...
November 16, 2017: Journal of Nutrition Education and Behavior
https://www.readbyqxmd.com/read/29151072/the-lactate-receptor-hcar1-gpr81-contributes-to-doxorubicin-chemoresistance-via-abcb1-transporter-up-regulation-in-human-cervical-cancer-hela-cells
#4
W Wagner, K D Kania, A Blauz, W M Ciszewski
The lactate receptor, also known as hydroxycarboxylic acid receptor 1 (HCAR1/GPR81), plays a vital role in cancer biology. Recently, HCAR1 was reported to enhance metastasis, cell growth, and survival of pancreatic, breast, and cervical cancer cells. This study showed, for the first time, the mechanism of HCAR1-mediated chemoresistance to doxorubicin through regulation of ABCB1 transporter. We observed the HCAR1 agonists L-lactate, D-lactate and 3,5-dihydroxybenzoic acid (DHBA) induced up-regulation of ABCB1...
August 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29150503/carbon-amendments-alter-microbial-community-structure-and-net-mercury-methylation-potential-in-sediments
#5
Geoff A Christensen, Anil C Somenahally, James G Moberly, Carrie M Miller, Andrew J King, Cynthia C Gilmour, Steven D Brown, Mircea Podar, Craig C Brandt, Scott C Brooks, Anthony V Palumbo, Judy D Wall, Dwayne A Elias
Neurotoxic methylmercury (MeHg) is produced by anaerobic Bacteria and Archaea possessing the genes hgcAB, but it is unknown how organic substrate and electron acceptor availability impact the distribution and abundance of these organisms. We evaluated the impact of organic substrate amendments on mercury (Hg) methylation rates, microbial community structure, and the distribution of hgcAB(+) microbes with sediments. Sediment slurries were amended with short-chain fatty acids, alcohols, or a polysaccharide. Minimal increases in MeHg were observed following lactate, ethanol and methanol amendments while a significant decrease (∼70%) was observed with cellobiose incubations...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29149434/enhancement-of-therapeutic-dna-vaccine-potency-by-melatonin-through-inhibiting-vegf-expression-and-induction-of-antitumor-immunity-mediated-by-cd8-t-cells
#6
Sanaz Baghban Rahimi, Alireza Mohebbi, Gelareh Vakilzadeh, Peyvand Biglari, Soodeh Razeghi Jahromi, Seyed Reza Mohebi, Sadegh Shirian, Ali Gorji, Amir Ghaemi
To be effective, therapeutic cancer vaccines should stimulate both an effective cell-mediated and a robust cytotoxic CD8+ T-cell response against human papillomavirus (HPV)-infected cells to treat the pre-existing tumors and prevent potential future tumors. In this study, the therapeutic experiments were designed in order to evaluate antitumor effect against the syngeneic TC-1 tumor model. The anti-tumor efficacy of a HPV-16 E7 DNA vaccine adjuvanted with melatonin (MLT) was evaluated in a C57BL/6 mouse tumor model by measuring tumor growth post vaccination and the survival rate of tumor-bearing mice, analyzing the specific lymphocyte proliferation responses in control and vaccinated mice by MTT assay...
November 17, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29147654/susceptibility-of-in-vitro-melanoma-skin-cancer-to-photoactivated-hypericin-versus-aluminium-iii-phthalocyanine-chloride-tetrasulphonate
#7
I M Ndhundhuma, H Abrahamse
The sensitivity of human melanoma cells to photoactivated Hypericin (Hyp) compared to aluminium(III) phthalocyanine chloride tetrasulphonate (AlPcS4Cl) is reported in this study. Melanoma cells (A375 cell line) were treated with various concentrations of Hyp or AlPcS4Cl alone, for 1, 4, and 24 hrs; varying doses of laser irradiation alone (594 or 682 nm); or optimal concentrations of PSs combined with laser irradiation. Changes in cell morphology, viability, membrane integrity, and proliferation after treatment of cells were determined using inverted microscopy, Trypan blue cell exclusion, Lactate Dehydrogenase (LDH) membrane integrity, and adenosine triphosphate (ATP) cell proliferation assay, respectively...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29145136/lead-cadmium-and-arsenic-in-human-milk-and-their-socio-demographic-and-lifestyle-determinants-in-lebanon
#8
Maya Bassil, Farah Daou, Hussein Hassan, Osama Yamani, Joelle Abi Kharma, Zouheir Attieh, Jomana Elaridi
INTRODUCTION: Exposure of newborns to toxic metals is of special interest due to their reported contamination in breast milk and potential harm. The aim of this study was to assess the occurrence and factors associated with lead, cadmium and arsenic contamination in breast milk collected from lactating mothers in Lebanon. METHODS: A total of 74 breast milk samples were collected from primaparas according to guidelines set by the World Health Organization. A survey was administered to determine the demographic and anthropometric characteristics of participating lactating mothers...
October 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/29143921/dichloroacetate-induced-intracellular-acidification-in-glioblastoma-in-vivo-detection-using-aacid-cest-mri-at-9-4%C3%A2-tesla
#9
Mohammed Albatany, Alex Li, Susan Meakin, Robert Bartha
Intracellular pH (pHi) plays an important role in the maintenance of normal cell function, and is maintained within a narrow range by the activity of transporters located at the plasma membrane. Modulation of tumor pHi may influence proliferation, apoptosis, chemotherapy resistance, and thermosensitivity. Chemical exchange saturation transfer (CEST) is a novel MRI contrast mechanism that is dependent on cellular pH. Amine and amide concentration-independent detection (AACID) is a recently developed CEST contrast method that is intracellular pH (pHi) weighted...
November 16, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29143345/lin28a-enhances-in-vitro-osteoblastic-differentiation-of-human-periosteum-derived-cells
#10
Jin-Ho Park, Bong-Wook Park, Young-Hoon Kang, Sung-Hoon Byun, Sun-Chul Hwang, Deok Ryong Kim, Dong Kyun Woo, June-Ho Byun
Despite a capacity for proliferation and an ability to differentiate into multiple cell types, in long-term culture and with ageing, stem cells show a reduction in growth, display a decrease in differentiation potential, and enter senescence without evidence of transformation. The Lin28a gene encodes an RNA-binding protein that plays a role in regulating stem cell activity, including self-renewal and differentiation propensity. However, the effect of the Lin28a gene on cultured human osteoprecursor cells is poorly understood...
November 16, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29141627/in-vitro-properties-of-concentrated-canine-platelets-stored-in-two-additive-solutions-a-comparative-study
#11
N Hlavac, C S Lasta, M L Dalmolin, L A Lacerda, D de Korte, N A Marcondes, S R Terra, F B Fernandes, F H D González
BACKGROUND: Platelet transfusion therapy poses many challenges in veterinary clinical practice. Lack of readily available blood donors, short shelf-life, and inability to administer a sufficient number of platelets to meet a dog's transfusion need are the major difficulties encountered. Platelet additive solutions are already in use at American and European human blood banks, showing to be a realistic alternative. This study compares the in vitro platelet function in plasma, Composol, or SSP+ during storage for 13 days...
November 15, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29139022/effect-of-plasma-activated-lactated-ringer-s-solution-on-pancreatic-cancer-cells-in-vitro-and-in-vivo
#12
Yusuke Sato, Suguru Yamada, Shigeomi Takeda, Norifumi Hattori, Kae Nakamura, Hiromasa Tanaka, Masaaki Mizuno, Masaru Hori, Yasuhiro Kodera
BACKGROUND: The medical applications of nonequilibrium atmospheric pressure plasma in cancer therapy have attracted attention. We previously reported on the antitumor effect of plasma-activated medium. However, this approach requires plasma-activated liquids that are administrable to the human body. In this study, we produced plasma-activated lactated Ringer's solution (PAL) and evaluated its antitumor effect and mechanism. Furthermore, we evaluated the effect of the intraperitoneal administration of PAL using a peritoneal dissemination mouse tumor model...
November 14, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29138850/role-of-mitochondrial-function-in-the-invasiveness-of-human-colon-cancer-cells
#13
Chen-Sung Lin, Li-Tzu Liu, Liang-Hung Ou, Siao-Cian Pan, Chia-I Lin, Yau-Huei Wei
We investigated the role of mitochondrial function in the invasiveness of human colorectal cancer (CRC) cell lines, using paired primary SW480 and metastatic SW620 cells, and appraised the clinical relevance of the alteration of mtDNA copy number in 33 pairs of CRC specimens after surgical resection. Suppression of mitochondrial function was achieved by the exposure of cells to oligomycin A (OA) or by knockdown of mitochondrial transcriptional factor A (TFAM) to evaluate their effects on energy metabolism, reactive oxygen species, protein expression levels of epithelial-mesenchymal transition (EMT) markers and invasive activity of CRC cells...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29135334/maternal-high-fat-diet-and-its-consequence-on-the-gut-microbiome-a-rat-model
#14
Phyllis E Mann, Kevin Huynh, Giovanni Widmer
The biological changes that occur during pregnancy in the female mammal include shifts in hormonal regulation in preparation for parturition and lactation, and changes in energy metabolism. In women, studies have also shown that during pregnancy there is a reduction in bacterial species richness in the gut. In the current experiment rats were used to model the interaction of diet, reproductive status, and intestinal bacterial microbiota during pregnancy and lactation. In Experiment 1 rats were exposed to either standard chow or high-fat chow (60%) and were divided into two groups: unmated (NULL) or mated (RE)...
November 14, 2017: Gut Microbes
https://www.readbyqxmd.com/read/29132539/the-diabetic-heart-utilizes-ketone-bodies-as-an-energy-source
#15
Yuji Mizuno, Eisaku Harada, Hitoshi Nakagawa, Yoshinobu Morikawa, Makoto Shono, Fumihito Kugimiya, Michihiro Yoshimura, Hirofumi Yasue
BACKGROUND: Diabetic heart is characterized by failure of insulin to increase glucose uptake and increasingly relies on free fatty acids (FFAs) as a source of fuel in animal models. However, it is not well known how cardiac energy metabolism is altered in diabetic hearts in humans. We examined cardiac fuel metabolism in the diabetics as compared to non-diabetics who underwent cardiac catheterization for heart diseases. MATERIAL AND METHODS: The study subjects comprised 81 patients (male 55, female 26, average age 63...
December 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29131416/characterization-of-sweat-induced-with-pilocarpine-physical-exercise-and-collected-passively-by-metabolomic-analysis
#16
S L Souza, G Graça, A Oliva
BACKGROUND/PURPOSE: The elimination of the pain associated with needle picking is a strong motivation for the development of clinical non-invasive diagnostic methods. Sweat has been described as an alternative biological sample that may have a direct relation to the plasma composition. MATERIALS AND METHODS: In this study, analysis of sweat of human volunteers obtained by induction with pilocarpine is compared with sweat samples obtained by physical exercise and by passive collection along 7 hours...
November 12, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/29131337/effect-of-farming-system-on-donkey-milk-composition
#17
Emanuela Valle, Luisa Pozzo, Marzia Giribaldi, Domenico Bergero, Maria Silvia Gennero, Daniela Dezzutto, Amy McLean, Giorgio Borreani, Mauro Coppa, Laura Cavallarin
BACKGROUND: Donkey milk is considered a functional food for sensitive consumers, such as children allergic to cow milk. No information is available regarding the effect of farming systems on the quality of donkey milk. The study was aimed at evaluating the effect of the farming system and lactation stage on gross composition, fat-soluble vitamins and fatty acids (FA) in donkey milk. RESULTS: Individual milk samples were collected from lactating jennies (n=53) on the six of the largest farms located in North West Italy...
November 13, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29128606/salvianic-acid-a-sodium-protects-huvec-cells-against-tert-butyl-hydroperoxide-induced-oxidative-injury-via-mitochondria-dependent-pathway
#18
Dan Jia, Tian Li, Xiaofei Chen, Xuan Ding, Yifeng Chai, Alex F Chen, Zhenyu Zhu, Chuan Zhang
Salvianic acid A (Danshensu) is a major water-soluble component in Salvia miltiorrhiza (Danshen), which has been widely used in clinic in China for treatment of cardiovascular diseases (CVDs). This study aimed to investigate the protective effects of salvianic acid A sodium (SAAS) against tert-butyl hydroperoxide (t-BHP) induced human umbilical vein endothelial cell (HUVEC) oxidative injury and the potential molecular mechanisms. In the antioxidant activity-assessing models, SAAS significantly prevented t-BHP induced cell proliferation inhibition and apoptosis...
November 8, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29128404/milk-from-transgenic-goat-expressing-human-lysozyme-for-recovery-and-treatment-of-gastrointestinal-pathogens
#19
Igor de Sá Carneiro, José Nilson Rodrigues de Menezes, Julyana Almeida Maia, André Marrocos Miranda, Victor Bruno Soares de Oliveira, James D Murray, Elizabeth A Maga, Marcelo Bertolini, Luciana Relly Bertolini
Lysozyme is an important non-specific immune protein in human milk, modulating the immune response against bacterial infections. The aim of this study was to characterize the milk of a transgenic goat expressing a recombinant human lysozyme (rhLZ) in the milk, also testing the in vitro antibacterial activity of the rhLZ milk against pathogens of the gastrointestinal tract. Milk samples collected from Tg and non-transgenic goats (nTg) from the 3rd to the 11th week of lactation were submitted to physicochemical analyses, rhLZ semi-quantification, and to rhLZ antimicrobial activity against Micrococcus luteus, Shiguella sonnei and Enterococcus faecalis...
November 8, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29126424/salivary-ph-calcium-phosphorus-and-selected-enzymes-in-healthy-dogs-a-pilot-study
#20
Ilaria Iacopetti, Anna Perazzi, Tamara Badon, Silvia Bedin, Barbara Contiero, Rebecca Ricci
BACKGROUND: Saliva in dogs, as in humans, is a complex fluid secreted by different salivary glands in the oral cavity to protect the oral mucosa and teeth. The use of saliva as a substitute for blood in diagnosing and prognosticating disease in humans is widely accepted. Salivary biochemistry has also been used as a marker for periodontal disease in humans. No studies have as yet investigated the relation between salivary biochemistry and periodontal disease in dogs, however; neither has the salivary composition of healthy dogs with no oral disease been assessed...
November 10, 2017: BMC Veterinary Research
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