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https://www.readbyqxmd.com/read/29145026/lc-ms-ms-quantification-of-felinine-metabolites-in-tissues-fluids-and-excretions-from-the-domestic-cat-felis-catus
#1
Ayami Futsuta, Wataru Hojo, Tamako Miyazaki, Tetsuro Yamashita, Masao Miyazaki
Domestic cat urine contains large concentrations of the unusual amino acid, felinine (2-amino-7-hydroxy-5,5-dimethyl-4-thiaheptanoic acid). A felinine derivative, 3-mercapt-3-methylbutanol is a potential scent signal for letting other animals know that the scent owners are cats. 3-Methylbutanol-glutathione (MBG) is an upstream precursor of the biosynthetic pathway of felinine that may be produced in hepatocytes by conjugation of glutathione with isopentenyl pyrophosphate, an intermediate for cholesterol biosynthesis...
November 6, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29144428/resistance-of-magnesium-alloys-to-corrosion-fatigue-for-biodegradable-implant-applications-current-status-and-challenges
#2
REVIEW
R K Singh Raman, Shervin Eslami Harandi
Magnesium (Mg) alloys are attracting increasing interest as the most suitable metallic materials for construction of biodegradable and bio-absorbable temporary implants. However, Mg-alloys can suffer premature and catastrophic fracture under the synergy of cyclic loading and corrosion (i.e., corrosion fatigue (CF)). Though Mg alloys are reported to be susceptible to CF also in the corrosive human body fluid, there are very limited studies on this topic. Furthermore, the in vitro test parameters employed in these investigations have not properly simulated the actual conditions in the human body...
November 16, 2017: Materials
https://www.readbyqxmd.com/read/29143139/effect-of-protein-adsorption-layers-and-solution-treatments-on-hydroxyapatite-deposition-on-polystyrene-plate-surfaces-in-simulated-body-fluids
#3
Kazutoshi Iijima, Ayako Iizuka, Ryo Suzuki, Hitomi Ueno-Yokohata, Nobutaka Kiyokawa, Mineo Hashizume
We have developed a method to functionalize polystyrene (PS) cell culture plates with hydroxyapatite (HAp) via protein adsorption layers such as human serum albumin (HSA) in simulated body fluids (SBFs). In order to investigate the versatility the method, in this study the effect of protein adsorption layers on HAp deposition on PS plate surfaces in SBF was evaluated. Pretreatments with alternate soaking process (ASP) using solutions containing calcium ions and phosphate ions followed by incubation with SBF for 24 h resulted in HAp deposition on PS plates with adsorption layers of HSA, type I collagen, hen egg white lysozyme, and poly L-glutamic acid, an acidic protein analogue: the deposition behaviors were correlated with adsorption ability and charge state of proteins...
November 15, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29143101/candidate-biomarkers-in-the-cervical-vaginal-fluid-for-the-self-diagnosis-of-cervical-precancer
#4
REVIEW
Xaveer Van Ostade, Martin Dom, Wiebren Tjalma, Geert Van Raemdonck
PURPOSE: Despite improvement in vaccines against human papilloma virus (HPV), the causative agent of cervical cancer, screening women for cervical precancer will remain indispensable in the coming 30-40 years. A simple test that could be performed at home or at a doctor's practice and that informs the woman whether she is at risk would significantly help make a broader group of patients who aware that they need medical treatment. Cervical vaginal fluid (CVF) is a body fluid that is very well suited for such a test...
November 15, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29142853/silk-suture-reaction-in-thyroid-surgery
#5
Selen Soylu, Akif Enes Arikan, Serkan Teksoz, Murat Ozcan, Yusuf Bukey
Silk suture reaction (i.e., a benign granulomatous inflammatory foreign body reaction) is a rare complication of thyroid surgery. Here, two cases of post-thyroidectomy suture reaction are presented. Both of the patients were female, one is 48 and the other is 34 years old. The patients were presented with neck swelling and leakage of serous fluid from the Kocher's incision. Both patients had normal free T4, free T3, and TSH values. The 48-year-old female patient had a right subtotal and left near-total thyroidectomy 6 years ago and the other had bilateral total thyroidectomy 6 years ago...
October 2017: Gland Surgery
https://www.readbyqxmd.com/read/29142320/biocompatibility-and-biodegradation-studies-of-a-commercial-zinc-alloy-for-temporary-mini-implant-applications
#6
M Bobby Kannan, Corey Moore, Shruti Saptarshi, Sahadev Somasundaram, Mohamed Rahuma, Andreas L Lopata
In this study, the biocompatibility and in vitro degradation behaviour of a commercial zinc-based alloy (Zn-5 Al-4 Mg) were evaluated and compared with that of pure zinc for temporary orthopaedic implant applications. Biocompatibility tests were conducted using human alveolar lung epithelial cells (A549), which showed that the zinc alloy exhibits similar biocompatibility as compared to pure zinc. In vitro degradation evaluation was performed using weight loss and electrochemical methods in simulated body fluid (SBF) at 37 °C...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141882/transparent-anemone-shrimp-ancylomenes-pedersoni-become-opaque-after-exercise-and-physiological-stress-in-correlation-with-increased-hemolymph-perfusion
#7
Laura E Bagge, Stephen T Kinsey, Justin Gladman, Sönke Johnsen
Whole-body transparency, an effective camouflage strategy in many aquatic species, can be disrupted by environmental and/or physiological stressors. We found that tail-flip escape responses temporarily disrupt the transparency of the anemone shrimp Ancylomenes pedersoni After as few as three tail flips, the previously transparent abdominal muscle became cloudy. Eliciting additional tail flips to the point of exhaustion (16±1 s.e.m.; n=23) resulted in complete opacity, though the original transparency returned after 20-60 min of inactivity...
November 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29141467/oxidative-stress-biomarkers-in-amniotic-fluid-of-pregnant-women-with-hypothyroidism
#8
Tanja R Novakovic, Zana C Dolicanin, Natasa Z Djordjevic
PURPOSE: Hypothyroidism in pregnancy is the serious state that may lead to fetal morbidity and mortality. Oxidative stress biomarkers in the amniotic fluid can provide important information on the health, development and maturation of the fetus during pregnancy. In this study, we examined whether maternal hypothyroidism contributes to increased oxidative stress biomarkers in the amniotic fluid during the first trimester of pregnancy. MATERIALS AND METHODS: The study was conducted on healthy pregnant women and pregnant women with hypothyroidism (gestational age: 16-18 weeks)...
November 15, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29141045/csf-in-the-ventricles-of-the-brain-behaves-as-a-relay-medium-for-arteriovenous-pulse-wave-phase-coupling
#9
William E Butler, Pankaj K Agarwalla, Patrick Codd
The ventricles of the brain remain perhaps the largest anatomic structure in the human body without established primary purpose, even though their existence has been known at least since described by Aristotle. We hypothesize that the ventricles help match a stroke volume of arterial blood that arrives into the rigid cranium with an equivalent volume of ejected venous blood by spatially configuring cerebrospinal fluid (CSF) to act as a low viscosity relay medium for arteriovenous pulse wave (PW) phase coupling...
2017: PloS One
https://www.readbyqxmd.com/read/29141008/smartphone-based-quantitative-measurements-on-holographic-sensors
#10
Gita Khalili Moghaddam, Christopher Robin Lowe
The research reported herein integrates a generic holographic sensor platform and a smartphone-based colour quantification algorithm in order to standardise and improve the determination of the concentration of analytes of interest. The utility of this approach has been exemplified by analysing the replay colour of the captured image of a holographic pH sensor in near real-time. Personalised image encryption followed by a wavelet-based image compression method were applied to secure the image transfer across a bandwidth-limited network to the cloud...
2017: PloS One
https://www.readbyqxmd.com/read/29140769/addressing-maternal-health-during-cdc-s-ebola-response-in-the-united-states
#11
Sascha Ellington, Mirna Perez, Diane Morof, Marianne E Zotti, William Callaghan, Dana Meaney-Delman, Maleeka Glover, Quynh-Chau Ha, Denise J Jamieson
Previous outbreaks suggest that pregnant women with Ebola virus disease (EVD) are at increased risk for severe disease and death. Healthcare workers who treat pregnant women with EVD are at increased risk of body fluid exposure. Despite the absence of pregnant women with EVD in the United States, CDC activated the Maternal Health Team (MHT), a functional unit dedicated to emergency preparedness and response issues, on October 18, 2014. We describe major activities of the MHT. A high-priority MHT activity was to publish guiding principles early in the response...
November 2017: Journal of Women's Health
https://www.readbyqxmd.com/read/29140368/in-vitro-bioactivity-test-of-real-dental-implants-according-to-iso-23317
#12
Martina Kolafová, Jan Šťovíček, Jakub Strnad, Josef Zemek, Jiři Dybal
PURPOSE: The goal of this study was to compare the in vitro bioactivity in simulated body fluid (SBF) of commercially available dental implants. MATERIALS AND METHODS: Bioactivity, according to ISO 23317, of commercially available dental implants with various surface modifications (BIO-surface, SLA, SLActive, TiUnite, and OsseoSpeed) was tested in SBF for 1 and 3 weeks. Surface characterizations, especially calcium and phosphorus surface content before and after the immersion in SBF, were performed...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140134/a-nutrition-recovery-station-following-recreational-exercise-improves-fruit-consumption-but-does-not-influence-fluid-recovery
#13
Ben Desbrow, Katelyn Barnes, Caroline Young, Gregory R Cox, Chris Irwin
Immediate post-exercise access to fruit/fluid via a recovery "station" is a common feature of mass participation sporting events. Yet little evidence exists examining their impact on subsequent dietary intake. The aim of this study was to determine if access to fruit/water/sports drinks within a recovery station significantly alters dietary and fluid intakes in the immediate post-exercise period and influences hydration status the next morning. 127 (79 males) healthy participants (mean±SD, age=22.5±3.5y, body mass (BM)=73±13kg) completed two self-paced morning 10km runs separated by 1 week...
November 15, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29138816/protective-effects-of-fucoidan-against-hyperoxic-lung-injury-via-the-erk-signaling-pathway
#14
Minghao Nie, Yan Wang, Yanhong Lu, Ying Yuan, Yingying Liu, Xiurong Li
High oxygen mechanical ventilation is widely used to treat various lung diseases; however, it may result in hyperoxia, which induces inflammation and lung injury. Fucoidan is an extract of the seaweed Fucus vesiculosus, which has previously been reported to exert effects against diabetic nephropathy. The present study is the first, to the best of our knowledge, to investigate the protective effects of fucoidan against hyperoxic lung injury. Balb/c mice were ventilated with 100% oxygen, with or without the atomization inhalation of fucoidan, for 36 h...
November 10, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29138669/medical-and-dental-students-attitude-and-practice-of-prevention-strategies-against-hepatitis-b-virus-infection-in-a-nigerian-university
#15
Oyebimpe Jumoke Adenlewo, Peter Olalekan Adeosun, Olawunmi Adedoyin Fatusi
Introduction: Medical and dental students are a high-risk group for hepatitis B virus (HBV) infection which is an occupational hazard for them and a leading cause of death globally. Prevention strategies include vaccination and observance of standard precaution. However, available reports claim utilization of the prevention strategies is low. This study evaluated the attitude of the students towards HBV vaccine and cross-infection practices. Methods: This study was a cross-sectional study carried out at the College of Health Sciences, Obafemi Awolowo University, Nigeria...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29138083/adaptations-in-the-physiological-heterogeneity-and-viability-of-shigella-dysenteriae-shigella-flexneri-and-salmonella-typhimurium-after-exposure-to-simulated-gastric-acid-fluid
#16
Atheesha Singh, Tobias George Barnard
Stomach acidity is an important barrier of the human body to protect itself from microbial pathogens entering the small intestine and causing infection. This study examined the survival adaptations of non-acid adapted diarrheal Shigella and Salmonella strains in an environment mimicking the human stomach. The bacterial responses to the challenge of acidic simulated gastric fluid were studied using flow cytometry (physiological heterogeneity, membrane integrity and survival (culturability) respectively. Flow cytometry showed that bacterial cells, when exposed to gastric fluid, transformed distinctly, into physiologically heterogeneous sub-populations: intact, stressed and damaged cells, when stained with propidium iodide and thiazole orange...
November 11, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29136442/association-between-prepregnancy-body-mass-index-and-severe-maternal-morbidity
#17
Sarka Lisonkova, Giulia M Muraca, Jayson Potts, Jessica Liauw, Wee-Shian Chan, Amanda Skoll, Kenneth I Lim
Importance: Although high body mass index (BMI) is associated with adverse birth outcomes, the association with severe maternal morbidity is unclear. Objective: To examine the association between prepregnancy BMI and severe maternal morbidity. Design, Setting, and Participants: Retrospective population-based cohort study including all singleton hospital births in Washington State, 2004-2013. Demographic data and morbidity diagnoses were obtained from linked birth certificates and hospitalization files...
November 14, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29136163/ascaris-suum-infection-down-regulates-inflammatory-pathways-in-the-pig-intestine-in-vivo-and-in-human-dendritic-cells-in-vitro
#18
Helene L E Midttun, Nathalie Acevedo, Per Skallerup, Sara Almeida, Kerstin Skovgaard, Lars Andresen, Søren Skov, Luis Caraballo, Irma van Die, Claus B Jørgensen, Merete Fredholm, Stig M Thamsborg, Peter Nejsum, Andrew R Williams
Ascaris suum is a helminth parasite of pigs closely related to its human counterpart, A. lumbricoides, which infects almost one billion people. Ascaris spp. is thought to modulate host immune and inflammatory responses, which may drive immune hyporesponsiveness during chronic infections. Using transcriptomic analysis, we show here that pigs with a chronic A. suum infection have a substantial suppression of inflammatory pathways in the intestinal mucosa, with a broad down-regulation of genes encoding cytokines and antigen-processing and co-stimulatory molecules...
November 9, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29136013/monomer-conversion-dimensional-stability-strength-modulus-surface-apatite-precipitation-and-wear-of-novel-reactive-calcium-phosphate-and-polylysine-containing-dental-composites
#19
Kanokrat Kangwankai, Sarah Sani, Piyaphong Panpisut, Wendy Xia, Paul Ashley, Haralampos Petridis, Anne Margaret Young
PURPOSE: The aim was to assess monomer conversion, dimensional stability, flexural strength / modulus, surface apatite precipitation and wear of mono / tri calcium phosphate (CaP) and polylysine (PLS)-containing dental composites. These were formulated using a new, high molecular weight, fluid monomer phase that requires no polymerisation activator. MATERIALS AND METHODS: Urethane and Polypropylene Glycol Dimethacrylates were combined with low levels of an adhesion promoting monomer and a light activated initiator...
2017: PloS One
https://www.readbyqxmd.com/read/29134827/serum-plasma-and-saliva-biomarkers-for-head-and-neck-cancer
#20
Lidia Maria Rebolho Batista Arantes, Ana Carolina de Carvalho, Matias Eliseo Melendez, André Lopes Carvalho
Head and neck squamous cell carcinoma (HNSCC) encompasses tumors arising from several locations (oral and nasal cavities, paranasal sinuses, salivary glands, pharynx, and larynx) and currently stands as the sixth most common cancer worldwide. The most important risk factors identified so far are tobacco and alcohol consumption, and, for a subgroup of HNSCCs, infection with high-risk types of human papillomavirus (HPV). Despite several improvements in the treatment of these tumors in the last decades, overall survival rates have only improved marginally, mainly due to the advanced clinical stage at diagnosis and the high rates of treatment failure associated with this late diagnosis...
November 14, 2017: Expert Review of Molecular Diagnostics
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