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https://www.readbyqxmd.com/read/28222522/intranasal-insulin-transport-is-preserved-in%C3%A2-aged-samp8-mice-and-is-altered-by-albumin-and-insulin-receptor-inhibition
#1
Elizabeth M Rhea, Samantha R Humann, Surabhi Nirkhe, Susan A Farr, John E Morley, William A Banks
Insulin delivered to the level of the cribriform plate (intranasal insulin) is being investigated for its ability to enhance memory in people with Alzheimer's disease (AD). Recent work has shown intranasal insulin can be detected in young CD-1 mice within 5 min and is still present 60 min after injection. The current study determined whether intranasal insulin transport and the subsequent brain distribution of insulin varies in young, healthy mice (CD-1) compared to those with an AD-like phenotype (aged SAMP8) or those pre-disposed to develop such a phenotype (young SAMP8)...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222498/creep-compliance-rheology-with-a-probe-like-cylindrical-geometry
#2
Kelly Connelly, Pooria Sharif-Kashani, Matt Farajzadeh, Jean-Pierre Hubschman, H Pirouz Kavehpour
BACKGROUND: Rheology experiments have been performed on the vitreous humor, a soft gel that rests inside of the eye, to study its viscoelastic behavior and underlying macromolecular structure. A significant challenge for experimentalists is preserving the macromolecular structure when removing vitreous from in vivo conditions. OBJECTIVE: We have developed a novel probe-like rheometer geometry that allows us to perform shear rheology experiments on the vitreous humor in situ...
February 10, 2017: Biorheology
https://www.readbyqxmd.com/read/28222362/quinazolinone-benzimidazole-conjugates-synthesis-characterization-dihydrofolate-reductase-inhibition-dna-and-protein-binding-properties
#3
Prinka Singla, Vijay Luxami, Kamaldeep Paul
Quinazolinone and benzimidazole represent as important and abundant classes of fused nitrogen-containing heterocycle. A series of two isomeric quinazolinone-benzimidazole conjugates is synthesized and substitutes with different aromatic rings. These compounds are well characterized by (1)H and (13)C NMR as well as mass spectrometry. Compounds are then evaluated by dihydrofolate reductase inhibitory activity. In vitro assay shows that some compounds are exhibiting significant dihydrofolate reductase inhibitory activities...
February 14, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28222206/titanium-hydroxyapatite-composites-sintered-at-low-temperature-for-tissue-engineering-in-vitro-cell-support-and-biocompatibility
#4
Romina Comín, Mariana P Cid, Luciano Grinschpun, Carlos Oldani, Nancy A Salvatierra
BACKGROUND: In clinical orthopedics, a critical problem is the bone tissue loss produced by a disease or injury. The use of composites from titanium and hydroxyapatite for biomedical applications has increased due to the resulting advantageous combination of hydroxyapatite bioactivity and favorable mechanical properties of titanium. Powder metallurgy is a simple and lower-cost method that uses powder from titanium and hydroxyapatite to obtain composites having hydroxyapatite phases in a metallic matrix...
February 21, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28222182/epidemiological-tracing-of-bovine-tuberculosis-in-switzerland-multilocus-variable-number-of-tandem-repeat-analysis-of-mycobacterium-bovis-and-mycobacterium-caprae
#5
Giovanni Ghielmetti, Simone Scherrer, Ute Friedel, Daniel Frei, Dominique Suter, Lukas Perler, Max M Wittenbrink
BACKGROUND: After 15 years of absence, in 2013 bovine tuberculosis (bTB), caused by Mycobacterium (M.) bovis and M. caprae, reemerged in the Swiss dairy cattle population. In order to identify the sources of infection as well as the spread of the agents, molecular-epidemiologic tracing by MIRU-VNTR analysis in combination with spoligotyping was performed. A total of 17 M. bovis and 7 M. caprae isolates were cultured from tuberculous bovine lymph nodes and analyzed with a set of 49 genetic markers by using automated capillary electrophoresis...
2017: PloS One
https://www.readbyqxmd.com/read/28222152/alteration-of-the-exdna-profile-in-blood-serum-of-llc-bearing-mice-under-the-decrease-of-tumour-invasion-potential-by-bovine-pancreatic-dnase-i-treatment
#6
Ludmila A Alekseeva, Nadezhda L Mironova, Evgenyi V Brenner, Alexander M Kurilshikov, Olga A Patutina, Marina A Zenkova
Taking into account recently obtained data indicating the participation of circulating extracellular DNA (exDNA) in tumorigenesis, enzymes with deoxyribonucleic activity have again been considered as potential antitumour and antimetastatic drugs. Previously, using murine Lewis lung carcinoma and hepatocellular carcinoma A1 tumour models, we have shown the antimetastatic activity of bovine DNase I, which correlates with an increase of DNase activity and a decrease of exDNA concentration in the blood serum of tumour-bearing mice...
2017: PloS One
https://www.readbyqxmd.com/read/28221972/control-points-to-reduce-movement-of-central-nervous-system-tissue-during-beef-slaughter
#7
J L Aalhus, R D Thacker, I L Larsen, J C Roberts, M A Price, M Juárez
Consumption of central nervous system tissue (CNST) from cattle with bovine spongiform encephalopathy (BSE) is thought to cause the human neurological disease, variant Creutzfeldt-Jacob disease. To identify points of cross-contamination of beef carcasses with CNST, 55 young beef cattle were slaughtered and processed through a federally inspected multispecies abattoir. The objectives of this study were to evaluate CNST spread following the placement of a plug in the penetration site of the skull after captive bolt stunning, to evaluate cross-contamination of carcasses before and after splitting, to compare the effects of hot water pasteurization (84°C for 10 s) versus cold water wash (10°C for 30 s) for reducing CNST on the carcass, and to examine other possible sources of cross-contamination in the abattoir...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221870/bovine-leukemia-virus-and-mycobacterium-avium-subsp-paratuberculosis-are-not-associated-with-shiga-toxin-producing-escherichia-coli-shedding-in-cattle
#8
Cristina Venegas-Vargas, Shannon D Manning, Paul M Coussens, Jonathan A Roussey, Paul Bartlett, Daniel Grooms
Bovine leukemia virus (BLV) is a retrovirus that causes enzootic bovine leukosis in cattle, and Mycobacterium avium subsp. paratuberculosis (MAP) is the etiologic agent of Johne's disease in cattle. Both diseases are chronic in nature and can lead to the disruption of normal immunological or physiological processes. Cattle are the major reservoir of Shiga toxin-producing Escherichia coli (STEC), a cause of foodborne illness in humans. We tested the hypothesis that cattle infected with BLV or MAP are more likely to shed STEC...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221858/genotypic-and-phenotypic-characterization-of-methicillin-resistant-staphylococcus-aureus-isolated-from-bovine-mastitic-milk-in-korea
#9
Jae Won Song, Soo Jin Yang, Sook Shin, Keun Seok Seo, Yong Ho Park, Kun Taek Park
Staphylococcus aureus is a major etiological pathogen for bovine mastitis, foodborne illness, and various clinical infections. Methicillin-resistant S. aureus (MRSA) has been isolated from bovine mastitic milk, and the presence of MRSA in milk is a major public health concern. We investigated the frequency of MRSA isolation from mastitic raw milk in Korea and characterized the patterns of antimicrobial resistance, virulence, and genotypes of the MRSA isolates. A total of 1,222 raw milk samples were collected from 47 dairy farms in Gyeonggi province from 2011 to 2012...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28220507/relationships-between-inflammation-and-immunity-related-transcript-abundance-in-the-rumen-and-jejunum-of-beef-steers-with-divergent-average-daily-gain
#10
J G Reynolds, A P Foote, H C Freetly, W T Oliver, A K Lindholm-Perry
The bovine rumen papillae are in contact with a wide array of microorganisms and the metabolites they produce, which may activate an inflammatory and/or immune response. Cytokines, chemokines and their receptor genes were tested for differential expression in the rumen and jejunum of beef steers with greater and lesser average daily body weight gain (ADG) near the average daily dry matter intake (DMI) for the population. Angus-sired steers (n = 16) were used to represent the greater (ADG = 2.2 ± 0.07 kg/day; DMI = 10...
February 21, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28219684/development-of-magnetic-nanoparticle-based-calorimetric-assay-for-the-detection-of-bovine-mastitis-in-cow-milk
#11
Raja Chinnappan, Sana Al Attas, Gerrit Koop, Tine van Werven, Wendy E Kaman, Floris J Bikker, Mohammed Zourob
Mastitis in dairy cattle is an inflammatory reaction of the udder tissue. Mastitis increases plasmin levels, leading to an increased proteolysis of milk proteins such as casein, resulting in a significant decrease in milk quality and related dairy products. Due to its key-role in mastitis, we used plasmin proteolytic activity as a biomarker for the detection of mastitis in bovine mastitic milk. Inspired by earlier studies on protease activity using mastitic milk samples, we developed a simple colorimetric assay to distinguish mastitic milk from milk derived from healthy animals...
February 17, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28219012/the-tyrosinase-catalyzed-oxidation-of-the-leukoderma-inducing-agent-raspberry-ketone-produces-e-4-3-oxo-1-butenyl-1-2-benzoquinone-implications-for-melanocyte-toxicity
#12
Shosuke Ito, Maki Hinoshita, Erina Suzuki, Makoto Ojika, Kazumasa Wakamatsu
The exposure of human skin to 4-(4-hydroxyphenyl)-2-butanone (raspberry ketone, RK) is known to cause chemical/occupational leukoderma. RK has a structure closely related to 4-(4-hydroxyphenyl)-2-butanol (rhododendrol), a skin whitening agent that was found to cause leukoderma in the skin of consumers in 2013. Rhododendrol is a good substrate for tyrosinase and causes a tyrosinase-dependent cytotoxicity to melanocytes, cells that are responsible for skin pigmentation. Therefore, it is expected that RK exerts its cytotoxicity to melanocytes through the tyrosinase-catalyzed oxidation to cytotoxic o-quinones...
February 20, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28218732/hydrophilic-dogwood-extracts-as-materials-for-reducing-the-skin-irritation-potential-of-body-wash-cosmetics
#13
Zofia Nizioł-Łukaszewska, Paweł Osika, Tomasz Wasilewski, Tomasz Bujak
A significant problem related to the use of surfactants in body wash cosmetics is their propensity to trigger skin irritations. Only scarce literature exists on the effect of plant extracts on the skin irritation potential. The present study is an attempt to determine the effect of hydrophilic dogwood extracts on the irritant potential of body wash gels. Extractants used in the study were water and mixtures of water with glycerine, water with trimethylglycine (betaine), and water with plant-derived glycol (propanediol)...
February 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28218710/substitution-at-the-c-3-position-of-catechins-has-an-influence-on-the-binding-affinities-against-serum-albumin
#14
Masaki Ikeda, Manabu Ueda-Wakagi, Kaori Hayashibara, Rei Kitano, Masaya Kawase, Kunihiro Kaihatsu, Nobuo Kato, Yoshitomo Suhara, Naomi Osakabe, Hitoshi Ashida
It is known that catechins interact with the tryptophan (Trp) residue at the drug-binding site of serum albumin. In this study, we used catechin derivatives to investigate which position of the catechin structure strongly influences the binding affinity against bovine serum albumin (BSA) and human serum albumin (HSA). A docking simulation showed that (-)-epigallocatechin gallate (EGCg) interacted with both Trp residues of BSA (one at drug-binding site I and the other on the molecular surface), mainly by π-π stacking...
February 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28218223/comparison-of-different-periodontal-healing-of-critical-size-noncontained-and-contained-intrabony-defects-in-beagles
#15
Sheng-Qi Zang, Shuai Kang, Xin Hu, Meng Wang, Xin-Wen Wang, Tao Zhou, Qin-Tao Wang
BACKGROUND: Regenerative techniques help promote the formation of new attachment and bone filling in periodontal defects. However, the dimensions of intraosseous defects are a key determinant of periodontal regeneration outcomes. In this study, we evaluated the efficacy of use of anorganic bovine bone (ABB) graft in combination with collagen membrane (CM), to facilitate healing of noncontained (1-wall) and contained (3-wall) critical size periodontal defects. METHODS: The study began on March 2013, and was completed on May 2014...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28217175/a-local-effect-model-based-interpolation-framework-for-experimental-nanoparticle-radiosensitisation-data
#16
Jeremy M C Brown, Fred J Currell
A local effect model (LEM)-based framework capable of interpolating nanoparticle-enhanced photon-irradiated clonogenic cell survival fraction measurements as a function of nanoparticle concentration was developed and experimentally benchmarked for gold nanoparticle (AuNP)-doped bovine aortic endothelial cells (BAECs) under superficial kilovoltage X-ray irradiation. For three different superficial kilovoltage X-ray spectra, the BAEC survival fraction response was predicted for two different AuNP concentrations and compared to experimental data...
2017: Cancer Nanotechnology
https://www.readbyqxmd.com/read/28216900/trichosanthes-kirilowii-exerts-androgenic-activity-via-regulation-of-psa-and-klk2-in-22rv1-prostate-cancer-cells
#17
Soo-Jin Jeong, Ji-Yoon Choi, Mi-Sook Dong, Chang-Seob Seo, Hyeun-Kyoo Shin
BACKGROUND: The androgen comprises a group of hormones that play roles in male reproductive activity as well as personal characteristics. OBJECTIVE: We investigated the androgenic activity of various herbal medicines in human prostate cancer 22Rv1 cells. MATERIALS AND METHODS: Herbal extracts of Trichosanthes kirilowii (TK), Asarum sieboldii (AS), Sanguisorba officinalis (SO), and Xanthium strumarium (XS) were selected to have androgenic effects based on a preliminary in vitro screening system...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216888/effect-of-absolute-from-hibiscus-syriacus-l-flower-on-wound-healing-in-keratinocytes
#18
Seok Won Yoon, Kang Pa Lee, Do-Yoon Kim, Dae Il Hwang, Kyung-Jong Won, Dae Won Lee, Hwan Myung Lee
BACKGROUND: Proliferation and migration of keratinocytes are essential for the repair of cutaneous wounds. Hibiscus syriacus L. has been used in Asian medicine; however, research on keratinocytes is inadequate. OBJECTIVE: To establish the dermatological properties of absolute from Hibiscus syriacus L. flower (HSF) and to provide fundamental research for alternative medicine. MATERIALS AND METHODS: We identified the composition of HSF absolute using gas chromatography-mass spectrometry analysis...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216879/antioxidant-and-nephroprotective-activities-of-the-extract-and-fractions-of-homonoia-riparia-lour
#19
Seena Kanniparambil Xavier, Shoja Muhammed Haneefa, Devkar Raviraj Anand, Picheswara Rao Polo, Rajalekshmi Maheshwari, Chandrashekara Shastry Shreedhara, Manganahalli Manjunath Setty
BACKGROUND: Homonoia riparia is a plant, which is widely used in the indigenous system of medicine for the treatment of urolithiasis, renal disorders and inflammatory conditions. This is the first report on the antioxidant and nephroprotective activities of whole plant of H. riparia. OBJECTIVE: The present study aims at investigating the in vitro antioxidant and nephroprotective activity of the methanol extract and its different fractions of H. riparia. METHODS: Petroleum ether (HRPE), Ethyl acetate (HREA), Butanol (HRBU), aqueous fractions (HRAQ) were prepared from the crude methanol extract of H...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216667/a-novel-hrm-assay-for-the-simultaneous-detection-and-differentiation-of-eight-poxviruses-of-medical-and-veterinary-importance
#20
Esayas Gelaye, Lukas Mach, Jolanta Kolodziejek, Reingard Grabherr, Angelika Loitsch, Jenna E Achenbach, Norbert Nowotny, Adama Diallo, Charles Euloge Lamien
Poxviruses belonging to the Orthopoxvirus, Capripoxvirus and Parapoxvirus genera share common host species and create a challenge for diagnosis. Here, we developed a novel multiplex PCR method for the simultaneous detection and differentiation of eight poxviruses, belonging to three genera: cowpox virus (CPXV) and camelpox virus (CMLV) [genus Orthopoxvirus]; goatpox virus (GTPV), sheeppox virus (SPPV) and lumpy skin disease virus (LSDV) [genus Capripoxvirus]; orf virus (ORFV), pseudocowpox virus (PCPV) and bovine papular stomatitis virus (BPSV) [genus Parapoxvirus]...
February 20, 2017: Scientific Reports
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