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https://www.readbyqxmd.com/read/29656599/novel-cost-effective-cu-doped-calcium-silicate-nanoparticles-for-bone-fracture-intervention-inherent-bioactivity-and-in-vivo-performance
#1
Mostafa Mabrouk, Shaimaa A ElShebiney, Sayed H Kenawy, Gehan T El-Bassyouni, Esmat Ma Hamzawy
Copper (Cu)-doped calcium silicate nanoparticles were synthesized by a wet precipitation method as economical bone fracture filler. The aim was to improve the overall physicochemical properties, bioactivity, and biological performance of the bone fracture filler prepared herein. The synthesized nanoparticles were evaluated using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and transmission electron microscopy (TEM). The bioactivity of the prepared nanoparticles was investigated after immersion in simulated body fluid (SBF) by means of inductively coupled plasma (ICP), SEM coupled with energy dispersive X-rays (EDX), and FTIR...
April 15, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29656516/mir-21-ameliorates-aged-associated-skin-wound-healing-defects-in-mice
#2
Shuang Long, Na Zhao, Lan Ge, Guojian Wang, Xinze Ran, Junping Wang, Yongping Su, Tao Wang
BACKGROUND: The cellular and molecular mechanisms for aged-associated delay of cutaneous wound healing are still not well understood. Our previous results show that miR-21 plays key roles during skin wound healing. We presumed that dysregulation of miR-21 may involve in aged-associated defects in wound healing and miR-21 may be one potential therapeutic target to ameliorate wound defects in elderly subjects. METHODS: Circular full thickness excisional wounds were made on the dorsal skin of young (2-month-old) and aged (12-month-old) female mice...
April 15, 2018: Journal of Gene Medicine
https://www.readbyqxmd.com/read/29656342/prosaposin-and-its-receptors-are-differentially-expressed-in-the-salivary-glands-of-male-and-female-rats
#3
Farzana Islam, Md Sakirul Islam Khan, Hiroaki Nabeka, Shouichiro Saito, Xuan Li, Tetsuya Shimokawa, Kimiko Yamamiya, Naoto Kobayashi, Seiji Matsuda
Salivary glands produce various neurotrophins that are thought to regulate salivary function during normal and pathological conditions. Prosaposin (PSAP) is a potent neurotrophin found in several tissues and various biological fluids and may play roles in the regulation of salivary function. However, little is known about PSAP in salivary glands. As the functions of salivary glands are diverse based on age and sex, this study examines whether PSAP and its receptors, G protein-coupled receptor 37 (GPR37) and GPR37L1, are expressed in the salivary glands of rats and whether sex and aging affect their expression...
April 14, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29656312/evaluation-of-taurine-neuroprotection-in-aged-rats-with-traumatic-brain-injury
#4
Raeesa Gupte, Sarah Christian, Paul Keselman, Joshua Habiger, William M Brooks, Janna L Harris
Despite higher rates of hospitalization and mortality following traumatic brain injury (TBI) in patients over 65 years old, older patients remain underrepresented in drug development studies. Worse outcomes in older individuals compared to younger adults could be attributed to exacerbated injury mechanisms including oxidative stress, inflammation, blood-brain barrier disruption, and bioenergetic dysfunction. Accordingly, pleiotropic treatments are attractive candidates for neuroprotection. Taurine, an endogenous amino acid with antioxidant, anti-inflammatory, anti-apoptotic, osmolytic, and neuromodulator effects, is neuroprotective in adult rats with TBI...
April 14, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29656167/extracellular-vesicles-exposing-tissue-factor-for-the-prediction-of-venous-thromboembolism-in-patients-with-cancer-a-prospective-cohort-study
#5
Nick van Es, Yohei Hisada, Marcello Di Nisio, Gabriela Cesarman, Ankie Kleinjan, Isabelle Mahé, Hans-Martin Otten, Pieter W Kamphuisen, René J Berckmans, Harry R Büller, Nigel Mackman, Rienk Nieuwland
INTRODUCTION: The procoagulant activity of extracellular vesicles (EV) exposing tissue factor (TF) is a promising biomarker for venous thromboembolism (VTE) in cancer patients. We evaluated an in-house EV-TF activity assay (the fibrin generation test) for the prediction of cancer-associated VTE. We also compared the results with the fibrin generation tests to an EV-TF-dependent factor Xa generation assay in samples from pancreatic cancer patients. MATERIALS AND METHODS: Data collected in a multinational, prospective cohort study were used...
April 10, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29656108/epoxygenase-inactivation-exacerbates-diet-and-aging-associated-metabolic-dysfunction-resulting-from-impaired-adipogenesis
#6
Antoni Olona, Ximena Terra, Jeong-Hun Ko, Carme Grau-Bové, Montserrat Pinent, Anna Ardevol, Ana Garcia Diaz, Aida Moreno-Moral, Matthew Edin, David Bishop-Bailey, Darryl C Zeldin, Timothy J Aitman, Enrico Petretto, Mayte Blay, Jacques Behmoaras
OBJECTIVE: When molecular drivers of healthy adipogenesis are perturbed, this can cause hepatic steatosis. The role of arachidonic acid (AA) and its downstream enzymatic cascades, such as cyclooxygenase, in adipogenesis is well established. The exact contribution of the P450 epoxygenase pathway, however, remains to be established. Enzymes belonging to this pathway are mainly encoded by the CYP2J locus which shows extensive allelic expansion in mice. Here we aimed to establish the role of endogenous epoxygenase during adipogenesis under homeostatic and metabolic stress conditions...
March 9, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29656073/protective-therapeutic-effects-of-peptide-nanofiber-and-hyaluronic-acid-hybrid-membrane-in-in-vivo-osteoarthritis-model
#7
Elif Arslan, Melis Sardan Ekiz, Cagla Eren Cimenci, Nuray Can, M Hanifi Gemci, Huseyin Ozkan, Mustafa O Guler, Ayse B Tekinay
Osteoarthritis (OA) is a condition where tissue function is lost through a combination of secondary inflammation and deterioration in articular cartilage. One of the most common causes of OA is age-related tissue impairment because of wear and tear due to mechanical erosion. Hyaluronic acid-based viscoelastic supplements have been widely used for the treatment of knee injuries. However, the current formulations of hyaluronic acid are unable to provide efficient healing and recovery. Here, a nanofiber-hyaluronic acid membrane system that was prepared by using a quarter of the concentration of commercially available hyaluronic acid supplement, Hyalgan® , was used for the treatment of an osteoarthritis model, and Synvisc® , which is another commercially available hyaluronic acid containing viscoelastic supplement, was used as a control...
April 12, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29655929/aging-impairs-mitochondrial-respiratory-capacity-in-classical-monocytes
#8
Brandt D Pence, Johnathan R Yarbro
Aging is a critical healthcare concern, with age-related inflammation disposing individuals to a variety of diseases. Monocytes are affected by the aging process, with increased inflammation and impaired cellular functions such as phagocytosis. Mechanisms by which aging alters monocyte function are unknown, but recent research suggests that the balance of metabolic processes determine immune cell phenotype and function. Given the known association between aging and mitochondrial dysfunction in other tissues, we hypothesized that aging would impair mitochondrial function in monocytes...
April 12, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29655367/biologic-plating-of-unstable-distal-radial-fractures
#9
Jae-Man Kwak, Gu-Hee Jung
BACKGROUND: Volar locking plating through the flexor carpi radialis is a well-established technique for treating unstable distal radial fractures, with few reported complications. In certain circumstances, including metaphyseal comminuted fractures, bridge plating through a pronator quadratus (PQ)-sparing approach may be required to preserve the soft tissue envelope. This study describes our prospective experience with bridge plating through indirect reduction. METHODS: Thirty-three wrists (four 23A2, six 23A3, 15 23C1, and eight 23C2) underwent bridge plating through a PQ-sparing approach with indirect reduction from June 2006 to December 2010...
April 14, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29652901/early-postnatal-soluble-fgfr3-therapy-prevents-the-atypical-development-of-obesity-in-achondroplasia
#10
Celine Saint-Laurent, Stephanie Garcia, Vincent Sarrazy, Karine Dumas, Florence Authier, Sophie Sore, Albert Tran, Philippe Gual, Isabelle Gennero, Jean-Pierre Salles, Elvire Gouze
BACKGROUND: Achondroplasia is a rare genetic disease is characterized by abnormal bone development and early obesity. While the bone aspect of the disease has been thoroughly studied, early obesity affecting approximately 50% of them during childhood has been somewhat neglected. It nevertheless represents a major health problem in these patients, and is associated to life-threatening complications including increasing risk of cardiovascular pathologies. We have thus decided to study obesity in patients and to use the mouse model to evaluate if soluble FGFR3 therapy, an innovative treatment approach for achondroplasia, could also impact the development of this significant complication...
2018: PloS One
https://www.readbyqxmd.com/read/29652832/sympathetic-nerve-hyperactivity-in-the-spleen-causal-for-nonpathogenic-driven-chronic-immune-mediated-inflammatory-diseases-imids
#11
REVIEW
Denise L Bellinger, Dianne Lorton
Immune-Mediated Inflammatory Diseases (IMIDs) is a descriptive term coined for an eclectic group of diseases or conditions that share common inflammatory pathways, and for which there is no definitive etiology. IMIDs affect the elderly most severely, with many older individuals having two or more IMIDs. These diseases include, but are not limited to, type-1 diabetes, obesity, hypertension, chronic pulmonary disease, coronary heart disease, inflammatory bowel disease, and autoimmunity, such as rheumatoid arthritis (RA), Sjőgren's syndrome, systemic lupus erythematosus, psoriasis, psoriatic arthritis, and multiple sclerosis...
April 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29652702/microwave-radiometry-derived-thermal-changes-of-small-joints-as-additional-potential-biomarker-in-rheumatoid-arthritis-a-prospective-pilot-study
#12
George Pentazos, Katerina Laskari, Kleanthis Prekas, John Raftakis, Petros P Sfikakis, Elias Siores
OBJECTIVE: A prospective pilot study was performed using microwave radiometry (MR), a noninvasive method detecting in-depth tissue temperature, to evaluate whether temperature-of-small-joint-derived scores correlate to parameters commonly used to assess disease activity in rheumatoid arthritis (RA). METHODS: Ten patients with active, untreated RA underwent clinical and laboratory assessments and joint ultrasound and MR of hand and foot small joints at baseline and at 15, 30, and 90 days after treatment onset...
April 13, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29652618/transcriptome-network-analysis-reveals-aging-related-mitochondrial-and-proteasomal-dysfunction-and-immune-activation-in-human-thyroid
#13
Byuri Angela Cho, Seong-Keun Yoo, Young Shin Song, Su-Jin Kim, Kyu Eun Lee, Minho Shong, Young Joo Park, Jeong-Sun Seo
BACKGROUND: Elucidating aging-related transcriptomic changes in human organs is necessary to understand the aging physiology and mechanisms, but little is known regarding the thyroid gland. We investigated aging-related transcriptomic alterations in the human thyroid gland and characterized the related molecular functions. METHODS: Publicly available RNA sequencing (RNA-seq) data of 322 thyroid tissue samples from the Genotype-Tissue Expression project were analyzed...
March 20, 2018: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29652550/chia-seed-supplementation-reduces-senescence-markers-in-epididymal-adipose-tissue-of-high-fat-diet-fed-samp8-mice
#14
Yehua Rui, Shengyi Yang, Li-Hua Chen, Li-Qiang Qin, Zhongxiao Wan
Adipose tissue is a key organ with substantial senescent cell accumulation under both obesity and aging conditions. Chia seed is an ancient seed and is the richest plant source of α-linolenic acid. We aimed to determine how cellular senescence markers will be altered in adipose tissue of senescence-accelerated mouse-prone 8 (SAMP8) mice fed with high-fat diets (HFDs); and how chia seed can affect the above markers. SAMP8 mice and their control senescence-accelerated mouse-resistant 1 (SAMR1) were divided into four groups, that is, SAMR1 low-fat diet group (R1LF), SAMP8LF group (P8LF), SAMP8 high-fat group (P8HF), and SAMP8HF group supplemented with 10% chia seed (P8HC)...
April 13, 2018: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29652296/validation-of-the-aast-egs-grade-for-skin-and-soft-tissue-infection
#15
Mohamed D Ray-Zack, Matthew C Hernandez, Moustafa Younis, Wyatt B Hoch, Dylan S Soukup, Nadeem Haddad, Martin D Zielinski
INTRODUCTION: Skin and soft tissue infections (SSTI) present with variable severity. The American Association for the Surgery of Trauma (AAST) developed an emergency general surgery (EGS) grading system for several diseases. We aimed to determine whether the AAST EGS grade corresponds with key clinical outcomes. METHODS: Single institution retrospective review of patients (≥18 years) admitted with SSTI during 2012-2016 was performed. Patients with surgical site infections or <18 years were excluded...
February 27, 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29652185/the-a%C3%A2-velocity-in-the-tissue-doppler-predicts-s-d-ratio-1-in-patients-with-a-normal-ejection-fraction
#16
Benny Johansson, Fredrik Lundin, Rolf Tegeback, Leif Bojö
OBJECTIVES: To compare the ability of the a´ velocity and the e´ velocity in predicting a dominant diastolic pulmonary vein flow (S/D ratio <1) in patients with normal ejection fraction. DESIGN: We retrospectively evaluated the diastolic function according to the ASE/EACVI guidelines, the S/D ratio and the septal, lateral and average a´ velocity in 293 unselected in-hospital patients, aged 39-86 years, in sinus rhythm and with no or mild valve disease, having a normal systolic function (EF >50%)...
April 13, 2018: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/29652003/angular-photogrammetric-analysis-of-the-soft-tissue-facial-profile-of-indian-adults
#17
K Saravana Pandian, Sindhuja Krishnan, S Aravind Kumar
Introduction: Soft-tissue analysis has become an important component of orthodontic diagnosis and treatment planning. Photographic evaluation of an orthodontic patient is a very close representation of the appearance of the person. The previously established norms for soft-tissue analysis will vary for different ethnic groups. Thus, there is a need to develop soft-tissue facial profile norms pertaining to Indian ethnic groups. Aim and Objectives: The aim of this study is to establish the angular photogrammetric standards of soft-tissue facial profile for Indian males and females and also to compare sexual dimorphism present between them...
March 2018: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/29651925/heptamer-peptide-disassembles-native-amyloid-in-human-plasma-via-heat-shock-protein-70
#18
Timothy James Cunningham, Jeffrey I Greenstein, Lihua Yao, Itzhak Fischer, Theresa Conners
Proteostasis, which includes the repair and disposal of misfolded proteins, depends in part on the activity of heat shock proteins, a well-known class of chaperone molecules. When this process fails abnormally folded proteins may accumulate in cells, tissues, and blood. These species are a hallmark of protein aggregation diseases but also amass during aging, often in the absence of an identified clinical disorder. We report that a neuroprotective cyclic heptapeptide, CHEC-7, which has been applied systemically as a therapeutic in animal neurodegeneration models, disrupts such aggregates and inhibits amyloidogenesis when added in nanomolar concentrations to human plasma...
April 13, 2018: Rejuvenation Research
https://www.readbyqxmd.com/read/29651745/correlations-between-age-functional-status-and-the-senescence-associated-proteins-hmgb2-and-p16-ink4a
#19
Ibiyonu Lawrence, Michael Bene, Timothy Nacarelli, Ashley Azar, Justin Z Cohen, Claudio Torres, Gregg Johannes, Christian Sell
Cellular senescence is a central component of the aging process. This cellular response has been found to be induced by multiple forms of molecular damage and senescent cells increase in number with age in all tissues examined to date. We have examined the correlation with age of two key proteins involved in the senescence program, p16INK4a and HMGB2. These proteins are involved in cell cycle arrest and chromatin remodeling during senescence. Circulating levels of these markers increases with age and correlates with functional status...
April 12, 2018: GeroScience
https://www.readbyqxmd.com/read/29651401/rehabilitation-of-an-auricular-defect-using-surgical-stent
#20
Mahnaz Arshad, Gholamreza Shirani, Sina Refoua
Reconstruction of a facial defect is a complex modality either surgically or prosthetically, depending on the site, size, etiology, severity, age, and the patient's expectation. The loss of an auricle, in the presence of an auditory canal, affects hearing, because the auricle gathers sound and directs it into the canal. The auricle acts as a resonator to slightly amplify lower frequency sounds and helps to localize sounds, especially in conjunction with the other ear. Osseointegrated implants have an important role in the prosthetic reconstruction of patients with craniofacial defects...
January 2018: World Journal of Plastic Surgery
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