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https://www.readbyqxmd.com/read/28229423/patient-derived-and-intraoperatively-formed-biomaterial-for-tissue-engineering
#1
Shalmli U Joshi, Rares O Barbu, Melissa Carr-Reynolds, Brian Barnes, Syam P Nukavarapu
In this chapter, we introduce a completely intraoperative procedure for obtaining a patient-derived biomaterial in cell therapy and tissue engineering applications. An automated device for processing human peripheral-blood ensures a reproducible method for retrieving the patient's cellular-rich as well as cellular-poor plasma. By substituting calcium for animal-derived thrombin, we engineer a completely autologous hydrogel that eliminates the risk of disease transmission and lowers FDA regulation hurdles. Through this chapter, we will discuss a bedside protocol developed to prepare a patient-derived hydrogel...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28226573/a-preliminary-study-on-multi-wavelength-ppg-based-pulse-transit-time-detection-for-cuffless-blood-pressure-measurement
#2
Jing Liu, Yuan-Ting Zhang, Xiao-Rong Ding, Wen-Xuan Dai, Ni Zhao, Jing Liu, Yuan-Ting Zhang, Xiao-Rong Ding, Wen-Xuan Dai, Ni Zhao, Wen-Xuan Dai, Yuan-Ting Zhang, Xiao-Rong Ding, Ni Zhao, Jing Liu
Pulse transit time (PTT) has been widely studied as an index of blood pressure (BP) changes. In recent years, some prototypes of PTT-based wearable BP measurement devices have been developed, which can relieve users from the discomfort caused by the inflating cuff used in auscultatory and oscillometric BP measurement techniques. However, in the common practice for PTT detection, multi-site sensor implementation on human body is required, making it difficult for the integration of wearable devices. Since multi-wavelength (MW) photoplethysmogram (PPG) signals carry blood pulsation information of different blood vessels embedded in different skin depths, the time difference between different wavelength PPG signals collected at the same body site can be treated as a special PTT on a short length of blood vessels beneath the skin...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28221197/physical-activity-and-cognitive-function-among-older-adults-with-hypertension
#3
Emily Frith, Paul D Loprinzi
OBJECTIVE: We evaluated the specific association between physical activity and cognitive function among a national sample of the broader US adult population with evidence of systemic hypertension. METHODS: Data from the 1999-2002 National Health and Nutrition Examination Survey were used to identify 1554 older adults, aged 60-85 years, with evidence of hypertension. The Digit Symbol Substitution Test (DSST) was used to assess cognitive function tasks of pairing and free recall among participants...
February 17, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28219093/-impact-of-vitamin-d-in-sports-does-vitamin-d-insufficiency-compromise-athletic-performance
#4
Sebastian Butscheidt, Tim Rolvien, Peter Ueblacker, Michael Amling, Florian Barvencik
: Introduction Vitamin D is essential for calcium homeostasis and regulates the expression of over 900 genes. It thereby influences musculoskeletal health and function. Additionally, multiple other effects were observed through the detection of vitamin D receptors (VDR) in numerous tissues of the human body. Material and Methods We reviewed the literature regarding evidence of the impact of vitamin D on musculoskeletal health and peak athletic performance. Results and Discussion It is well known that there is a high prevalence of vitamin D deficiency in the average European population...
February 20, 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/28215203/the-association-between-macronutrient-intake-and-the-metabolic-syndrome-and-its-components-in-type-1-diabetes
#5
Aila J Ahola, Valma Harjutsalo, Lena M Thorn, Riitta Freese, Carol Forsblom, Sari Mäkimattila, Per-Henrik Groop
Diet is a major modifiable lifestyle factor that may affect the components of the metabolic syndrome. We aimed to investigate the association between relative proportions of macronutrients and the components of the metabolic syndrome in a population of individuals with type 1 diabetes. In all, 791 individuals without nephropathy, with plausible energy intake and known metabolic syndrome status, taking part in the Finnish Diabetic Nephropathy Study were included in the analyses. Dietary data were collected with a diet record...
February 20, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28214466/antimicrobial-activity-of-hl-60-cells-compared-to-primary-blood-derived-neutrophils-against-staphylococcus-aureus
#6
Ragheda Yaseen, Stefanie Blodkamp, Petra Lüthje, Friederike Reuner, Lena Völlger, Hassan Y Naim, Maren von Köckritz-Blickwede
BACKGROUND: The human leukemia cell line HL-60 is considered an alternative cell culture model to study neutrophil differentiation and migration. The aim of this study was to characterize the suitability of HL-60 cells differentiated to neutrophil-like cells (nHL-60) as substitute for blood-derived human neutrophils to investigate the interaction of neutrophils with Staphylococcus aureus. METHODS: For this purpose, antimicrobial activity, bacterial uptake, production of reactive oxygen species and the release of neutrophil extracellular traps (NETs) by nHL-60 cells were analyzed and compared to primary blood-derived neutrophils using Staphylococcus aureus as important human and animal pathogen...
February 19, 2017: Journal of Negative Results in Biomedicine
https://www.readbyqxmd.com/read/28208667/dietary-fatty-acids-and-changes-in-blood-lipids-during-adolescence-the-role-of-substituting-nutrient-intakes
#7
Carla Harris, Anette Buyken, Sibylle Koletzko, Andrea von Berg, Dietrich Berdel, Tamara Schikowski, Berthold Koletzko, Joachim Heinrich, Marie Standl
The relevance of dietary fatty acids (FA) for blood lipids should be assessed in the context of substituting nutrients. Such evidence is lacking for adolescents. This study describes prospective associations of dietary FA with changes in serum lipids during adolescence, and considers the theoretical isocaloric replacements of saturated FA (SFA) with other FA or carbohydrates (CHO). Children from the GINIplus and LISAplus birth cohorts, with data on FA intakes (at age 10 years) and serum lipids (at age 10 and 15 years), were included (n = 1398)...
February 11, 2017: Nutrients
https://www.readbyqxmd.com/read/28207548/egfr-mutation-testing-in-blood-for-guiding-egfr-tyrosine-kinase-inhibitor-treatment-in-patients-with-nonsmall-cell-lung-cancer-a-protocol-for-systematic-review-and-meta-analysis
#8
Jin-Qiu Yuan, Yue-Lun Zhang, Hai-Tao Li, Chen Mao
BACKGROUND: Epidermal growth factor receptor (EGFR) mutation testing in tumor tissue is now a common practice in selecting non-small cell lung cancer (NSCLC) patients for EGFR tyrosine kinase inhibitor (TKI) treatment. However, tumor tissues are often absent or insufficient for the testing. Blood is a potential substitute providing a noninvasive, easily accessible and repeatedly measureable source of genotypic information. However which is the best blood EGFR mutation testing method remains unclear...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28207169/design-synthesis-and-biological-evaluation-of-novel-1-2-4-trioxanes-as-potential-antimalarial-agents
#9
Amit K Gupta, Kanika Varshney, Vivek Kumar, Kumkum Srivastava, Aditya B Pant, Sunil K Puri, Anil K Saxena
A series of substituted 1,2,4-trioxanes were synthesized and evaluated for their antimalarial potential, in silico ADME properties and cytotoxicity on neuronal cell lines. Among the 15 synthesized substituted 1,2,4-trioxanes, two compounds (compound 15, IC50  = 25.71 nM; compound 21, IC50  = 19.6 nM) exhibited promising in vitro antimalarial potential comparable to those of the existing drugs chloroquine and artemisinin. Both of these compounds were found to be nontoxic up to 20 µM concentration in neuronal PC-12 cells...
February 16, 2017: Archiv der Pharmazie
https://www.readbyqxmd.com/read/28196163/entire-papilla-preservation-technique-a-novel-surgical-approach-for-regenerative-treatment-of-deep-and-wide-intrabony-defects
#10
Serhat Aslan, Nurcan Buduneli, Pierpaolo Cortellini
Primary wound closure and uneventful early wound stability over the biomaterials are the most critical elements of successful periodontal regeneration. Yet the surgical elevation of the interdental papilla to access deep and wide intrabony defects entails an impairment of the papillary blood supply that can result in difficult healing due to a lack of primary closure in the early healing period. This negative event might complicate the healing process, favoring bacterial contamination. A novel modified tunnel surgical technique designed to maintain the integrity of the interdental papilla is presented in this article, with the aim of providing an optimal environment for wound healing in regenerative procedures...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28195550/novel-germline-mutation-leu512met-in-the-thyrotropin-receptor-gene-tshr-leading-to-sporadic-non-autoimmune-hyperthyroidism
#11
Stephanie A Roberts, Jennifer E Moon, Andrew Dauber, Jessica R Smith
BACKGROUND: Primary nonautoimmune hyperthyroidism is a rare cause of neonatal hyperthyroidism. This results from an activating mutation in the thyrotropin-receptor (TSHR). It can be inherited in an autosomal dominant manner or occur sporadically as a de novo mutation. Affected individuals display a wide phenotype from severe neonatal to mild subclinical hyperthyroidism. We describe a 6-month-old boy with a de novo mutation in the TSHR gene who presented with accelerated growth, enlarging head circumference, tremor and thyrotoxicosis...
February 14, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28194922/identification-of-the-novel-hla-b-13-83-allele-by-polymerase-chain-reaction-sequence-based-typing-in-a-chinese-cord-blood-donor
#12
J He, N-Y Chen, Z-D Han, W Zhang, F-M Zhu
HLA-B*13:83 differs from HLA-B*13:01:01 by 2 nucleotide substitutions at positions 103 and 106.
February 13, 2017: HLA
https://www.readbyqxmd.com/read/28191646/non-invasive-evaluation-of-blood-oxygen-saturation-and-hematocrit-from-t1-and-t2-relaxation-times-in-vitro-validation-in-fetal-blood
#13
Sharon Portnoy, Mike Seed, John G Sled, Christopher K Macgowan
PURPOSE: We propose an analytical method for calculating blood hematocrit (Hct) and oxygen saturation (sO2 ) from measurements of its T1 and T2 relaxation times. THEORY: Through algebraic substitution, established two-compartment relationships describing R1=T1-1 and R2=T2-1 as a function of hematocrit and oxygen saturation were rearranged to solve for Hct and sO2 in terms of R1 and R2 . Resulting solutions for Hct and sO2 are the roots of cubic polynomials. METHODS: Feasibility of the method was established by comparison of Hct and sO2 estimates obtained from relaxometry measurements (at 1...
February 12, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28188667/chronic-condition-as-a-mediator-between-metabolic-syndrome-and-cognition-among-community-dwelling-older-adults-the-moderating-role-of-sex
#14
Hui Foh Foong, Tengku Aizan Hamid, Rahimah Ibrahim, Sharifah Azizah Haron, Suzana Shahar
AIM: Metabolic syndrome and chronic conditions are significant predictors of cognition; however, few studies have examined how they work together in predicting cognition in old age. Therefore, the present study examines whether a chronic condition mediates the association between metabolic syndrome and cognition. In addition, it discusses the moderating role of sex in the relationships between metabolic syndrome, chronic conditions and cognition. METHODS: Secondary analysis was carried out of data from the Malaysian national survey that involved 2322 community residents aged 60 years or older in Peninsular Malaysia...
February 11, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28187046/effect-of-hydroxyethyl-starch-priming-on-the-systemic-inflammatory-response-and-lung-edema-following-cardiopulmonary-bypass-in-a-rat-model
#15
Yutaka Fujii, Takayuki Tanabe, Tsubasa Yamashiro, Mikiyasu Shirai, Yoshiaki Takewa, Eisuke Tatsumi
Cardiopulmonary bypass (CPB) preserves patients' lives during open heart surgery by providing sufficient oxygen delivery and blood supply to vital organs. However, previous studies have suggested that the interaction of hemodilution and vascular hyperpermeability induces tissue edema and an inflammatory response during CPB. In this study, we hypothesized that suppression of the systemic inflammatory response and tissue edema during CPB by a plasma substitute (hydroxyethyl starch: HES).Rats (450-500 g) were divided into a SHAM group (n=5), a Ringer's acetate CPB group (n=7), and an HES CPB group (n=7)...
February 7, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28184956/-hemorrhagic-shock-general-principles
#16
T I Eiben, V Fuhrmann, B Saugel, S Kluge
Bleeding associated with hemorrhagic shock is often seen in emergency medical services or in the intensive care unit. Identifying the origin of the bleeding and additional disorders helps to determine the degree of the hemorrhagic shock. In order to be effective, the initial therapy until blood products are available needs to be differentiated to be effective in terms of hemodynamic stabilization and coagulation. Crystalloidal and colloidal solutions should be used carefully since those solutions bear a risk within themselves...
February 9, 2017: Der Internist
https://www.readbyqxmd.com/read/28184017/an-update-of-the-hong-kong-epilepsy-guideline-consensus-statement-on-the-use-of-antiepileptic-drugs-in-hong-kong
#17
J Ky Fong, E Ly Chan, H Leung, I Chan, R Sk Chang, G Cy Fong, E Lw Fung, C Ht Lui, B Bh Fung, T L Poon, D Siu, H T Wong, E Yeung, A Wy Yung, C Xl Zhu
OBJECTIVE: New information about antiepileptic drugs has arisen since the publication of the Hong Kong Epilepsy Guideline in 2009. This article set out to fill the knowledge gap between 2007 and 2016 on the use of antiepileptic drugs in Hong Kong. PARTICIPANTS: Between May 2014 and April 2016, four consensus meetings were held in Hong Kong, where a group comprising 15 professionals (neurologists, paediatricians, neurosurgeons, radiologists, and clinical psychologists) from both public and private sectors aimed to review the best available evidence and update all practising physicians on a range of clinical issues including drug-related matters...
February 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28182408/design-synthesis-structure-activity-relationship-studies-and-three-dimensional-quantitative-structure-activity-relationship-3d-qsar-modeling-of-a-series-of-o-biphenyl-carbamates-as-dual-modulators-of-dopamine-d3-receptor-and-fatty-acid-amide-hydrolase
#18
Alessio De Simone, Debora Russo, Gian Filippo Ruda, Alessandra Micoli, Mariarosaria Ferraro, Rita Maria Concetta Di Martino, Giuliana Ottonello, Maria Summa, Andrea Armirotti, Tiziano Bandiera, Andrea Cavalli, Giovanni Bottegoni
We recently reported molecules designed according to the multi-target-directed ligand paradigm to exert combined activity at human fatty acid amide hydrolase (FAAH) and dopamine receptor subtype D3 (D3R). Both targets are relevant for tackling several types of addiction (most notably nicotine addiction) and other compulsive behaviors. Here, we report an SAR exploration of a series of biphenyl-N-[4-[4-(2,3-substituted-phenyl)piperazine-1-yl]alkyl]carbamates, a novel class of molecules that had shown promising activities at the FAAH - D3R target combination in preliminary studies...
February 9, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28177580/pre-coating-of-biphasic-calcium-phosphate-bone-substitute-with-atelocollagen-enhances-bone-regeneration-through-stimulation-of-osteoclast-activation-and-angiogenesis
#19
Beom-Su Kim, Sun-Sik Yang, Jun Lee
Type I collagen (Col) is a naturally polymerizing protein and important extracellular matrix bone component. The aim of this study was to improve bone regeneration capacity by pre-coating the surface of biphasic calcium phosphate (BCP) granules with AT-Col, and evaluating its biological effects. BCP granules were pre-coated with AT-Col using adsorption and lyophilization method. Morphology of AT-Col pre-coated surfaces was observed using scanning electron microscopy (SEM). Biocompatibility and osteogenic activity of AT-Col were determined in vitro with human mesenchymal stem cell (hMSCs)...
February 8, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28164605/association-of-mir-146a-rs2910164-and-mir-149-rs2292832-variants-with-susceptibility-to-type-2-diabetes
#20
Behnam Alipoor, Reza Meshkani, Hamid Ghaedi, Zohreh Sharifi, Ghodratollah Panahi, Taghi Golmohammadi
BACKGROUND: The deregulation of miRNAs has been implicated in the pathogenesis of type 2 diabetes (T2D). Single nucleotide polymorphisms (SNPs) located within the miRNA sequence could alter miRNA maturation and expression or change the binding affinity of miRNAs to their target mRNAs. In the present study we aimed to elucidate the possible association between the miR-146a rs2910164 and miR-149 rs2292832 variants with the susceptibility to T2D and its related metabolic traits in an Iranian population...
August 1, 2016: Clinical Laboratory
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