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https://www.readbyqxmd.com/read/29242821/regulation-of-regeneration-by-heparan-sulfate-proteoglycans-in-the-extracellular-matrix
#1
David M Gardiner
Just as the building of a house requires a blueprint, the rebuilding of lost or damaged body parts through regeneration requires a set of instructions for the assembly of the various tissues into the right places. Much progress has been made in understanding how to control the differentiation of different cell types to provide the building blocks for regeneration, such as bone, muscle, blood vessels and nerves/Schwann cells. These are the cells that follow the blueprint (the pattern-following cells) and end up in the right places relative to each other in order to restore the lost function...
September 2017: Regenerative Engineering and Translational Medicine
https://www.readbyqxmd.com/read/29242645/retinal-angiogenesis-regulates-astrocytic-differentiation-in-neonatal-mouse-retinas-by-oxygen-dependent-mechanisms
#2
Li-Juan Duan, Sarah J Pan, Thomas N Sato, Guo-Hua Fong
In mice, retinal vascular and astrocyte networks begin to develop at birth, expanding radially from the optic nerve head (ONH) towards the retinal periphery. The retinal vasculature grows towards the periphery ahead of differentiated astrocytes, but behind astrocytic progenitor cells (APCs) and immature astrocytes. Endothelial cell specific Vegfr-2 disruption in newborn mice not only blocked retinal vascular development but also suppressed astrocytic differentiation, reducing the abundance of differentiated astrocytes while causing the accumulation of precursors...
December 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29242307/ozone-induced-eosinophil-recruitment-to-airways-is-altered-by-antigen-sensitization-and-tumor-necrosis-factor-%C3%AE-blockade
#3
Sarah A Wicher, Katy L Lawson, David B Jacoby, Allison D Fryer, Matthew G Drake
Ozone is an atmospheric pollutant that causes lung inflammation and airway hyperresponsiveness. Ozone's effects occur in two distinct phases that are mediated by different populations of eosinophils. In the acute phase 1 day after exposure, mature airway-resident eosinophils alter parasympathetic nerve function that results in airway hyperresponsiveness. At this time point, the severity of hyperresponsiveness correlates with the number of eosinophils in close proximity to airway nerves, but not with eosinophils in bronchoalveolar lavage...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29242118/activation-of-transglutaminase-2-by-nerve-growth-factor-in-differentiating-neuroblastoma-cells-a-role-in-cell-survival-and-neurite-outgrowth
#4
Alanood S Algarni, Alan J Hargreaves, John M Dickenson
NGF (nerve growth factor) and tissue transglutaminase (TG2) play important roles in neurite outgrowth and modulation of neuronal cell survival. In this study, we investigated the regulation of TG2 transamidase activity by NGF in retinoic acid-induced differentiating mouse N2a and human SH-SY5Y neuroblastoma cells. TG2 transamidase activity was determined using an amine incorporation and a peptide cross linking assay. In situ TG2 activity was assessed by visualising the incorporation of biotin-X-cadaverine using confocal microscopy...
December 11, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29241077/pectoral-nerve-blocks-to-improve-analgesia-after-breast-cancer-surgery-a-prospective-randomized-and-controlled-trial
#5
Neethu M, Ravinder Kumar Pandey, Ankur Sharma, Vanlalnghaka Darlong, Jyotsna Punj, Renu Sinha, Preet Mohinder Singh, Nandini Hamshi, Rakesh Garg, Chandralekha Chandralekha, Anurag Srivastava
STUDY OBJECTIVE: To evaluate the analgesic efficacy of ultrasound guided combined pectoral nerve blocks I and II in patients scheduled for surgery for breast cancer. DESIGN: Prospective, randomized, control trial. SETTING: Operating rooms in a tertiary care hospital of Northern India. PATIENTS: Sixty American Society of Anesthesiologists status I to II adult women, aged 18-70years were enrolled in this study. INTERVENTIONS: Patients were randomized into two groups (30 patients in each group), PECS (P) group and control (C) group...
December 11, 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/29239954/analysis-of-inpatient-falls-after-total-knee-arthroplasty-in-patients-with-continuous-femoral-nerve-block
#6
Lloyd R Turbitt, Paul G McHardy, Michel Casanova, Joel Shapiro, Lisa Li, Stephen Choi
Continuous femoral nerve block (cFNB) is thought to increase the risk of falls after total knee arthroplasty (TKA). Previous studies have failed to consider the timing of cFNB removal in relation to inpatient falls. We investigated all inpatient falls after TKA over a 3-year period using our institutional safety report database. Ninety-five falls were reported from a total of 3745 patients. The frequency of falls after TKA persisted at a similar rate despite removal of cFNB and likely regression of femoral nerve block...
December 11, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29239940/prolonged-duration-local-anesthesia-using-liposomal-bupivacaine-combined-with-liposomal-dexamethasone-and-dexmedetomidine
#7
Alina Y Rwei, Robert T Sherburne, David Zurakowski, Bruce Wang, Daniel S Kohane
BACKGROUND: The relatively short duration of effect of local anesthetics has been addressed by encapsulation in drug delivery systems. Codelivery with a single compound that produces an adjuvant effect on nerve block but without intrinsic local anesthetic properties can further prolong the nerve block effect. Here, we investigated whether codelivery of more than 1 encapsulated adjuvant compound can further enhance nerve blockade. METHODS: Liposomes loaded with bupivacaine (Bup), dexamethasone phosphate (DexP), or dexmedetomidine (DMED) were synthesized and its in vitro drug release profiles were determined...
December 11, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29236279/the-maxillary-nerve-block-for-in-office-hybrid-balloon-sinus-dilation-procedures-a-preliminary-study
#8
Gary J Nishioka
Transitioning of rhinologic procedures from the operating room to the office setting in selected patients is a rising trend. An effective pain-control, patient-preparation protocol is essential, especially with advanced in-office rhinologic procedures such as hybrid balloon sinus dilation (BSD), in which other procedures such as ethmoidectomy, turbinate reduction, and other procedures are concomitantly performed. A regimen using oral sedation, topical tetracaine gel, topical tetracaine/epinephrine-soaked cottonoid packs, and intranasal local infiltrative anesthesia can vary significantly in effectiveness and be suboptimal at times (as determined by using treated patients as historical controls)...
December 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29233635/therapeutic-benefit-of-environmental-enrichment-on-optic-neuritis
#9
REVIEW
Marcos L Aranda, María F González Fleitas, Hernán H Dieguez, Georgia A Milne, Julián D Devouassoux, María I Keller Sarmiento, Mónica Chianelli, Pablo H Sande, Damián Dorfman, Ruth E Rosenstein
Optic neuritis (ON) is an inflammatory, demyelinating, neurodegenerative, and presently untreatable condition of the optic nerve which might induce blindness. We analyzed the effect of environmental enrichment (EE) on visual pathway damage provoked by experimental ON induced by a microinjection of bacterial lipopolysaccharide (LPS) into the optic nerve. For this purpose, LPS was microinjected into the optic nerve from male Wistar rats. After injection, one group of animals was submitted to EE, and another group remained in standard environment (SE) for 21 days...
December 9, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29233569/continuous-adductor-canal-blocks-provide-superior-ambulation-and-pain-control-compared-to-epidural-analgesia-for-primary-knee-arthroplasty-a-randomized-controlled-trial
#10
Erdan Kayupov, Kamil Okroj, Adam C Young, Mario Moric, Timothy J Luchetti, Gilat Zisman, Asokumar Buvanendran, Tad L Gerlinger, Craig J Della Valle
BACKGROUND: Adductor canal blocks (ACBs) are an alternative to femoral nerve blocks that minimize lower extremity weakness. However, it is unclear whether this block will provide analgesia that is equivalent to techniques, such as epidural analgesia. The purpose of this randomized controlled trial was to compare continuous ACBs with epidural analgesia for primary total knee arthroplasty. METHODS: Following institutional review board approval, 145 patients were randomized to 1 of 3 groups: combined spinal-epidural (CSE), spinal + continuous ACB (CACB), or general + CACB...
November 13, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29231159/facet-joint-injections-for-non-specific-low-back-pain-a-feasibility-rct
#11
Saowarat Snidvongs, Rod S Taylor, Alia Ahmad, Simon Thomson, Manohar Sharma, Angela Farr, Deborah Fitzsimmons, Stephanie Poulton, Vivek Mehta, Richard Langford
BACKGROUND: Pain of lumbar facet-joint origin is a common cause of low back pain in adults and may lead to chronic pain and disability, with associated health and socioeconomic implications. The socioeconomic burden includes an inability to return to work resulting in loss of productivity in addition to direct and indirect health-care utilisation costs. Lumbar facet-joints are paired synovial joints between the superior and inferior articular processes of consecutive lumbar vertebrae and between the fifth lumbar vertebra and the sacrum...
December 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29229558/enhanced-activities-of-%C3%AE-subunit-containing-gabaa-receptors-blocked-spinal-long-term-potentiation-and-attenuated-formalin-induced-spontaneous-pain
#12
Jiang-Ping Liu, Yong-Tao He, Xing-Lian Duan, Zhan-Wei Suo, Xian Yang, Xiao-Dong Hu
The δ subunit-containing γ-Aminobutyric acid type A receptors (δ-GABAARs) are located at extrasynaptic sites and persistently active in the control of neuronal excitability. Here we recorded primary afferent C fiber-evoked field potentials in the superficial dorsal horn of rat spinal cords in vivo, and investigated the possible influence of δ-GABAARs activities on nociceptive synaptic transmission. We found that δ-GABAARs-preferring agonist THIP, when topically applied onto spinal cord dorsum, inhibited the basal synaptic responses in a dose-dependent manner...
December 8, 2017: Neuroscience
https://www.readbyqxmd.com/read/29227351/impact-of-pectoral-nerve-block-on-postoperative-pain-and-quality-of-recovery-in-patients-undergoing-breast-cancer-surgery-a-randomised-controlled-trial
#13
Yoshinori Kamiya, Miki Hasegawa, Takayuki Yoshida, Misako Takamatsu, Yu Koyama
BACKGROUND: In recent years, thoracic wall nerve blocks, such as the pectoral nerve (PECS) block and the serratus plane block have become popular for peri-operative pain control in patients undergoing breast cancer surgery. The effect of PECS block on quality of recovery (QoR) after breast cancer surgery has not been evaluated. OBJECTIVES: To evaluate the ability of PECS block to decrease postoperative pain and anaesthesia and analgesia requirements and to improve postoperative QoR in patients undergoing breast cancer surgery...
December 8, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29227106/hollow-silica-nanoparticles-penetrate-the-peripheral-nerve-and-enhance-the-nerve-blockade-from-tetrodotoxin
#14
Qian Liu, Claudia M Santamaria, Tuo Wei, Chao Zhao, Tianjiao Ji, Tianshe Yang, Andre Shomorony, Bruce Y Wang, Daniel S Kohane
The efficacy of tetrodotoxin (TTX), a very potent local anesthetic, is limited by its poor penetration through barriers to axonal surfaces. To address this issue, we encapsulated TTX in hollow silica nanoparticles (TTX-HSN) and injected them at the sciatic nerve in rats. TTX-HSN achieved an increased frequency of successful blocks, prolonged the duration of the block, and decreased the toxicity compared to free TTX. In animals injected with fluorescently labeled HSN, the imaging of frozen sections of nerve demonstrated that HSN could penetrate into nerve and that the penetrating ability of silica nanoparticles was highly size-dependent...
December 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/29226148/transition-from-deep-regional-blocks-toward-deep-nerve-hydrodissection-in-the-upper-body-and-torso-method-description-and-results-from-a-retrospective-chart-review-of-the-analgesic-effect-of-5-dextrose-water-as-the-primary-hydrodissection-injectate-to-enhance
#15
Stanley K H Lam, Kenneth Dean Reeves, An-Lin Cheng
Deep nerve hydrodissection uses fluid injection under pressure to purposely separate nerves from areas of suspected fascial compression, which are increasingly viewed as potential perpetuating factors in recalcitrant neuropathic pain/complex regional pain. The usage of 5% dextrose water (D5W) as a primary injectate for hydrodissection, with or without low dose anesthetic, could limit anesthetic-related toxicity. An analgesic effect of 5% dextrose water (D5W) upon perineural injection in patients with chronic neuropathic pain has recently been described...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29226051/cadaveric-study-for-intraoral-needle-access-to-the-infratemporal-fossa-application-to-posterior-superior-alveolar-nerve-block-technique
#16
Joe Iwanaga, Emily Simonds, Rod J Oskouian, R Shane Tubbs
The posterior superior alveolar (PSA) nerve block is, from an anatomical perspective, challenging because the mandibular ramus and the zygomatic process of the maxilla can interfere with the course of the needle. Dentists empirically know that shifting the patient's mandible to the ipsilateral side can improve visibility and accessibility for such blocks. This cadaveric study aimed to establish anatomical evidence for the ipsilateral mandible shifting used in the PSA. The distance between the lateral most bulging point of the alveolar part of the maxilla and ipsilateral anterior border of the ramus of the mandible ranged from 1...
October 9, 2017: Curēus
https://www.readbyqxmd.com/read/29225640/anesthetic-efficacy-of-articaine-and-ketamine-for-inferior-alveolar-nerve-block-in-symptomatic-irreversible-pulpitis-a-prospective-randomized-double-blind-study
#17
Vahid Sakhaeimanesh, Saber Khazaei, Naser Kaviani, Masoud Saatchi, Maryam Shafiei, Abbasali Khademi
Introduction: The aim of this prospective, randomized, double-blind study was to investigate the effect of articaine combined with ketamine on the success rate of inferior alveolar nerve block (IANB) in posterior mandible teeth with symptomatic irreversible pulpitis. Methods and Materials: Forty two adult patients with diagnosis of symptomatic irreversible pulpitis of a mandibular posterior tooth were selected. The patients received two cartridges of either containing 3...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29223409/obtaining-adequate-tension-for-extensor-hallucis-longus-tendon-rupture-repair-using-wide-awake-surgery-a-case-report
#18
Takenori Matsuda, Akira Taniguchi, Koji Hayashi, Yasuaki Nakanishi, Yasuhito Tanaka
Wide-awake surgery has potential advantages for treating extensor or flexor tendon injury. We present a case of chronic extensor hallucis longus injury treated with turn-down reconstruction using wide-awake surgery with a selective nerve block. To the best of our knowledge, this is the first such case reported. The patient had dropped a knife proximal to the right hallux metatarsophalangeal joint. Because direct suturing was thought to be difficult, turn-down reconstruction was performed under a selective nerve block...
December 7, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29223350/%C3%AE-6-and-%C3%AE-1-integrin-heterodimer-mediates-schwann-cell-interactions-with-axons-and-facilitates-axonal-regeneration-after-peripheral-nerve-injury
#19
In Ae Chang, Ki Joong Kim, Uk Namgung
Several isoforms of integrin subunits are expressed in Schwann cells and mediate Schwann cell interactions with axons. Here, we identify α6 and β1 integrins as heterodimeric proteins expressed in Schwann cells and define their functions in axonal regeneration. α6 and β1 integrins are induced in Schwann cells in the sciatic nerve after a crush injury, and the blocking of integrin activity by siRNA expression and by treatment with anti-integrin antibodies attenuates Schwann cell contact with cultured neurons and decreases neurite outgrowth...
December 6, 2017: Neuroscience
https://www.readbyqxmd.com/read/29222672/morphological-alterations-in-the-position-of-the-mandibular-foramen-in-dentate-and-edentate-mandibles
#20
Niki Matveeva, Lidija Popovska, Biljana Evrosimovska, Elizabeta Chadikovska, Julijana Nikolovska
The technique of inferior alveolar nerve (IAN) block must be based on precise anatomical knowledge regarding the correct position of the mandibular foramen (MF). The aim of the investigation reported here was to determine the anatomic and topographic localization of the MF according to mandibular ramus anatomic landmarks and to identify morphological alterations in the position of the MF and size and shape of the ramus in terms of the impact of tooth socket loss in the molar and premolar region. Seventy-three dry human adult mandibles were divided into two groups according to dental status...
December 8, 2017: Anatomical Science International
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