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Cycling injuries

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https://www.readbyqxmd.com/read/29135783/beyond-the-bottom-of-the-foot-topographic-organization-of-the-foot-dorsum-in-walking
#1
Taryn Klarner, Gregory E P Pearcey, Yao Sun, Trevor S Barss, Chelsea Kaupp, Bridget Munro, Nick Frank, E Paul Zehr
INTRODUCTION: Sensory feedback from the foot dorsum during walking has only been studied globally by whole nerve stimulation. Stimulating the main nerve innervating the dorsal surface produces a functional stumble corrective response that is phase-dependently modulated. We speculated that effects evoked by activation of discrete skin regions on the foot dorsum would be topographically organized, as with the foot sole. METHODS: Nonnoxious electrical stimulation was delivered to five discrete locations on the dorsal surface of the foot during treadmill walking...
December 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29135638/mountain-biking-injuries
#2
Majid Ansari, Ruhollah Nourian, Morteza Khodaee
With the increasing popularity of mountain biking, also known as off-road cycling, and the riders pushing the sport into extremes, there has been a corresponding increase in injury. Almost two thirds of acute injuries involve the upper extremities, and a similar proportion of overuse injuries affect the lower extremities. Mountain biking appears to be a high-risk sport for severe spine injuries. New trends of injury patterns are observed with popularity of mountain bike trail parks and freeride cycling. Using protective gear, improving technical proficiency, and physical fitness may somewhat decrease the risk of injuries...
November 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/29134318/the-impact-of-different-peripheral-suture-techniques-on-the-biomechanical-stability-in-flexor-tendon-repair
#3
B Wieskötter, M Herbort, M Langer, M J Raschke, D Wähnert
PURPOSE: Flexor tendon repair consists of circumferential peripheral sutures in combination with core sutures to avoid fraying and reduces the exposure of suture material on tendon surface. The peripheral suture adds up to a tenfold increase of the biomechanical stability compared to the core suture alone. The purpose of our study was to determine the most favourable peripheral repair technique for tendon repair. METHODS: Seventy-two porcine flexor tendons underwent standardized tenotomy and repair using one of the following six methods (n = 12): simple-running (SR), simple-locking (SL), Halsted-mattress (HM), lin-locking (LL), Lembert-mattress (LM), and Silfverskiöld cross-stich (SCS) suture technique...
November 13, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29133968/effects-of-laser-therapy-and-grimaldi-s-muscle-shortening-manoeuvre-on-motor-control-of-subjects-with-incomplete-spinal-cord-injuries
#4
Diego Longo, Leonardo Longo, Paolo Lippi, Giulio Cherubini, Vanessa Mangé
Background and Objectives: From year 2003 we treated positively 251 patients with Traumatic Spinal Cord Injuries (TSCI), using Non-Surgical Laser Therapy (NSLT). In order to increase muscle strength, we have also started using a physical therapy practice called Grimaldi's Muscle Shortening Manoeuvre (GMSM)The goal of our study is to obtain objective data suggesting the real effectiveness of the association of these two treatments. Study Design and Methods: In 2015, 10 patients with incomplete TSCI were enrolled...
September 30, 2017: Laser Therapy
https://www.readbyqxmd.com/read/29132455/going-beyond-the-9-1-1-call-what-bc-emergency-health-services-is-doing-to-improve-timely-access-to-emergency-care
#5
Kerry Campbell, Jessica Jaiven, Kimberly Banfield, Corinne Begg, Janice Butler, Leanne Thain
British Columbia Emergency Health Services (BCEHS) uses an internationally recognized Medical Priority Dispatch System to assign appropriate responses to 9-1-1 calls based on patients' clinical acuity. In 2015, 71% of Omega calls (classified as calls involving low acuity injuries) were assigned an ambulance. To better meet patients' needs, BCEHS collaborated with HealthLink BC's Nursing Services (HLBC NS) to audit over 2,000 calls. Based on the results, three Plan, Do, Study, Act (PDSA) cycles were implemented, yielding a 35% decrease in ambulances assigned and a 173% increase in referrals to HLBC NS to provide more suitable support...
2017: Healthcare Quarterly
https://www.readbyqxmd.com/read/29130941/remote-ischemia-preconditioning-attenuates-blood-spinal-cord-barrier-breakdown-in-rats-undergoing-spinal-cord-ischemia-reperfusion-injury-associated-with-activation-and-upregulation-of-cb1-and-cb2-receptors
#6
Na Jing, Bo Fang, Zhi-Lin Wang, Hong Ma
BACKGROUND/AIMS: Remote ischemic preconditioning (RIPC) has protective effects on spinal cord ischemia reperfusion (I/R) injury, but the potential mechanisms remain unclear. In our study, the effects and underlying mechanisms of RIPC on blood-spinal cord barrier (BSCB) breakdown following I/R injury were investigated. METHODS: animals underwent intraperitoneal administration with cannabinoid-1 (CB1) receptor antagonist AM251, cannabinoid-2 (CB2) receptor antagonist AM630 or vehicle 15 minutes before three 3-minute occlusion-reperfusion cycles on the right femoral artery or a sham operation...
October 31, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29123570/cyclophosphamide-and-regional-citrate-anticoagulation-a-sour-combination
#7
Tim Hendra, Jonathan Simon, Alastair Lowe
We present a case of a woman in her 70 s, on cyclophosphamide for multiple myeloma, who was admitted to critical care with grade III acute kidney injury. Renal replacement therapy with regional citrate anticoagulation was commenced. Shortly thereafter her systemic-ionised calcium levels fell and remained stubbornly low until post-filter calcium return was doubled. Her total-to-ionised calcium ratio gradually increased and so, to avoid further accumulation of citrate, anticoagulation was changed to heparin...
November 2017: J Intensive Care Soc
https://www.readbyqxmd.com/read/29119222/the-influence-of-an-injury-prevention-program-on-young-road-users-a-german-experience
#8
Thomas Brockamp, Paola Koenen, Michael Caspers, Bertil Bouillon, Michael Köhler, Uli Schmucker
PURPOSE: Trauma remains a leading cause of mortality and morbidity in youth. The Prevent Alcohol and Risk Related Trauma in Youth (P.A.R.T.Y.) program is an injury prevention program. The aim of the study was to analyze the influence on risk-taking behaviors and risk awareness on young road users by a pre-post-questionnaire. METHODS: A pre-post intervention study was performed using a standardized questionnaire. The questionnaire contained three sections with different items (in total 22) to identify differences regarding students' risk behavior and risk awareness...
November 8, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29118264/accumulation-of-5-oxoproline-in-myocardial-dysfunction-and-the-protective-effects-of-oplah
#9
Atze van der Pol, Andres Gil, Herman H W Silljé, Jasper Tromp, Ekaterina S Ovchinnikova, Inge Vreeswijk-Baudoin, Martijn Hoes, Ibrahim J Domian, Bart van de Sluis, Jan M van Deursen, Adriaan A Voors, Dirk J van Veldhuisen, Wiek H van Gilst, Eugene Berezikov, Pim van der Harst, Rudolf A de Boer, Rainer Bischoff, Peter van der Meer
In response to heart failure (HF), the heart reacts by repressing adult genes and expressing fetal genes, thereby returning to a more fetal-like gene profile. To identify genes involved in this process, we carried out transcriptional analysis on murine hearts at different stages of development and on hearts from adult mice with HF. Our screen identified Oplah, encoding for 5-oxoprolinase, a member of the γ-glutamyl cycle that functions by scavenging 5-oxoproline. OPLAH depletion occurred as a result of cardiac injury, leading to elevated 5-oxoproline and oxidative stress, whereas OPLAH overexpression improved cardiac function after ischemic injury...
November 8, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/29115600/messenger-rna-sequencing-reveals-similar-mechanisms-between-neonatal-and-acute-respiratory-distress-syndrome
#10
Hua Mei, Yuheng Zhang, Chunzhi Liu, Yayu Zhang, Chunli Liu, Dan Song, Chun Xin, Jing Wang, Jonathan Josephs-Spaulding, Yan Zhu, Feng Tang
Hypoxemia and hypercarbia resulting from a lack of surfactant is considered to be the primary mechanism underlying neonatal respiratory distress syndrome (NRDS). Surfactant replacement therapy may mitigate the symptoms of the disease by decreasing the surface tension of alveoli and facilitating inflation. However, surfactant serves an additional role in immunological processes. Therefore, it may be hypothesized that mechanisms of NRDS involving surfactant exert additional functions to promoting alveolar inflation...
October 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29115588/limb-remote-ischemic-post%C3%A2-conditioning-reduces-injury-and-improves-long%C3%A2-term-behavioral-recovery-in-rats-following-subarachnoid-hemorrhage-possible-involvement-of-the-autophagic-process
#11
Xiang Hu, Tao Lv, Shao-Feng Yang, Xiao-Hua Zhang, Yi-Feng Miao
Hemorrhage‑related neurologic injury is a primary cause of disability and mortality following subarachnoid hemorrhage (SAH). The aim of the present study was to investigate the potential neuroprotective effect and the possible role of autophagy in limb remote ischemic post‑conditioning (RIPostC) using an endovascular puncture rat model of SAH. RIPostC was induced by three cycles of occlusion (10 min) and release (10 min) in the bilateral femoral artery using an aneurysm clip. Early RIPostC began immediately following SAH, delayed RIPostC began following a 30 min delay and the repeated RIPostC group underwent the protocol every day for 3 days...
October 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29115483/hepatocellular-toxicity-of-oxalicumone-a-via-oxidative-stress-injury-and-mitochondrial-dysfunction-in-healthy-human-liver-cells
#12
Si Shi, Limei Yao, Kunbin Guo, Xiangyu Wang, Qi Wang, Weirong Li
The marine‑derived oxalicumone A (POA) has been demonstrated as a potent anti‑tumor bioactive agent for a variety of human carcinoma, but to the best of our knowledge, remains to be evaluated in healthy liver cells. As many drugs distribute preferentially in the liver, the present study aimed to investigate the effects of POA on apoptosis, oxidative stress and mitochondrial function in L‑02 healthy liver cells. A Cell‑Counting kit‑8 assay demonstrated that POA inhibits the proliferation of L‑02 cells in a dose‑ and time‑dependent manner...
November 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29113703/similar-2-point-discrimination-and-stereognosia-but-better-locognosia-at-long-term-with-an-independent-home-based-sensory-reeducation-program-vs-no-reeducation-after-low-median-nerve-transection-and-repair
#13
Dimitrios K Antonopoulos, Andreas F Mavrogenis, Panayiotis D Megaloikonomos, Evanthia Mitsiokapa, George Georgoudis, Christos Th Vottis, George K Antonopoulos, Panayiotis J Papagelopoulos, Spyridon Pneumatikos, Sarantis G Spyridonos
STUDY DESIGN: Prospective controlled study. INTRODUCTION: Previous studies evaluated the effectiveness of sensory reeducation (SR) after peripheral nerve injury and repair. However, evidence for long-term clinical usefulness of SR is inconclusive. PURPOSE OF THE STUDY: The purpose of this study is to compare the sensory results of patients with low-median nerve complete transection and microsurgical repair, with and without SR at long term...
November 4, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/29111100/systemic-cell-cycle-activation-is-induced-following-complex-tissue-injury-in-axolotl
#14
Kimberly Johnson, Joel Bateman, Tia DiTommaso, Alan Y Wong, Jessica L Whited
Activation of progenitor cells is crucial to promote tissue repair following injury in adult animals. In the context of successful limb regeneration following amputation, progenitor cells residing within the stump must re-enter the cell cycle to promote regrowth of the missing limb. We demonstrate that in axolotls, amputation is sufficient to induce cell-cycle activation in both the amputated limb and the intact, uninjured contralateral limb. Activated cells were found throughout all major tissue populations of the intact contralateral limb, with internal cellular populations (bone and soft tissue) the most affected...
October 27, 2017: Developmental Biology
https://www.readbyqxmd.com/read/29108853/the-biomechanics-of-subsynovial-connective-tissue-in-health-and-its-role-in-carpal-tunnel-syndrome
#15
REVIEW
V J M M Festen-Schrier, P C Amadio
Carpal Tunnel Syndrome (CTS) is the most common surgically treated problem in the hand. Aside from the neuropathy itself, the most common findings are fibrosis of the subsynovial connective tissue (SSCT) and increased intra carpal tunnel pressure. Normally, the SSCT is a multilayer tissue interspersed among the carpal tendons and nerve. As the tendons move, successive SSCT layers are recruited, forming a gliding unit and providing a limit to differential movement. Exceeding this limit, damages the SSCT as has been shown in both cadavers and animal models...
October 24, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29107862/gypsophila-elegans-isoorientin-2%C3%A2-o-%C3%AE-l-arabinopyranosyl-ameliorates-porcine-serum-induced-immune-liver-fibrosis-by-inhibiting-nf-%C3%AE%C2%BAb-signaling-pathway-and-suppressing-hsc-activation
#16
Facheng Bai, Quanfang Huang, Jinbin Wei, Shujuan Lv, Yuxin Chen, Chunhong Liang, Ling Wei, Zhongpeng Lu, Xing Lin
The present study was to investigate the inhibitory effect of Gypsophila elegans isoorientin-2″-O-α-l-arabinopyranosyl (GEI) on hepatic stellate cells (HSCs), to reveal the underlying mechanism of GEI against hepatic fibrosis. Our study showed that GEI significantly alleviated liver injury induced by porcine serum (PS) in rats; it notably alleviated collagen accumulation as evidenced by a significant decrease in the levels of collagen biomarkers including hyaluronic acid, laminin, hydroxyproline and procollagen III N-terminal peptide...
November 3, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29107715/differed-surgery-in-patient-with-colorectal-endometriosis-and-pregnancy-intention-is-it-reasonable
#17
S Touleimat, E Huet, S Sanguin, H Roman
The management of patients presenting deep infiltrating endometriosis involving the rectum (DIER) and pregnancy intention is controversial. Assisted Reproduction Techniques (ART) are often proposed first, but this may lead to complications and further difficulties managing DIER. A 29-years-old woman was diagnosed with pre-occlusive DIER. However, she was offered in vitro fertilization (IVF) and underwent six unsuccessful cycles with serious complications: an ectopic pregnancy and a hemoperitoneum following arterial injury during oocyte retrieval, requiring two laparotomies in emergency...
October 28, 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/29106990/white-light-emitting-diode-suppresses-proliferation-and-induces-apoptosis-in-hippocampal-neuron-cells-through-mitochondrial-cytochrome-c-oxydase-mediated-igf-1-and-tnf-%C3%AE-pathways
#18
Yang Yang, Yibo Zong, Qinwei Sun, Yimin Jia, Ruqian Zhao
Light emitting diode (LED) light has been tested to treat traumatic brain injury, neural degenerative diseases and psychiatric disorders. Previous studies indicate that blue LED light affects cell proliferation and apoptosis in photosensitive cells and cancer cells. In this study, we demonstrate that white LED light exposure impaired proliferation and induced apoptosis in HeLa and HT-22 hippocampal neural cells, but not C2C12 cells. Furthermore, the mechanisms underlying the effect of white LED light exposure on HT-22 cells were elucidated...
October 26, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29106627/bi-nucleation-of-podocytes-is-uniformly-accompanied-by-foot-processes-widening-in-renal-disease
#19
Johanna Mühldorfer, Eva Pfister, Maike Büttner-Herold, Monika Klewer, Kerstin Amann, Christoph Daniel
Background: Podocytes are terminally differentiated glomerular cells expressing a highly complex architecture and lacking the ability to proliferate. However, during renal injury or stress these cells can re-enter into the cell cycle but fail to divide. As a consequence, bi- and multi-nucleated podocytes can be identified in renal biopsies from patients with various kidney diseases. It is still unclear whether the occurrence of such cells is dependent on or correlates with renal damage and if bi- or multi-nucleation results in ultrastructural alterations such as e...
July 2, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29105817/loss-of-spry1-attenuates-vascular-smooth-muscle-proliferation-by-impairing-mitogen-mediated-changes-in-cell-cycle-regulatory-circuits
#20
Xuehui Yang, Yan Gong, Qing He, Jonathan D Licht, Lucy Liaw, Robert E Friesel
Signals from growth factors or mechanical stimuli converge to promote vascular smooth muscle cell (VSMC) migration and proliferation, key events in the pathogenesis of intimal hyperplasia upon vascular injury. Spry1, a regulator of receptor tyrosine kinases (RTK), plays a role in maintaining the contractile phenotype of VSMC. The aim of the current study was to determine the role of Spry1 in VSMC proliferation in vitro and injury induced neointimal hyperplasia in vivo. VSMC proliferation and neointima formation were evaluated in cultured human aortic SMC (hAoSMC) and ligation-induced injury of mouse carotid arteries from Spry1 gene targeted mice, and their corresponding wild type littermates...
November 6, 2017: Journal of Cellular Biochemistry
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