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Central sensitisation

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https://www.readbyqxmd.com/read/28205224/muc13-overexpression-in-renal-cell-carcinoma-plays-a-central-role-in-tumour-progression-and-drug-resistance
#1
Yonghua Sheng, Choa Ping Ng, Rohan Lourie, Esha T Shah, Yaowu He, Kuan Yau Wong, Inge Seim, Iulia Oancea, Christudas Morais, Penny L Jeffery, John Hooper, Glenda C Gobe, Michael A McGuckin
Metastatic renal cell carcinoma is a largely incurable disease, and existing treatments targeting angiogenesis and tyrosine kinase receptors are only partially effective. Here we reveal that MUC13, a cell surface mucin glycoprotein, is aberrantly expressed by most renal cell carcinomas, with increasing expression positively correlating with tumor grade. Importantly, we demonstrated that high MUC13 expression was a statistically significant independent predictor of poor survival in two independent cohorts, particularly in stage 1 cancers...
February 16, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28191525/obesity-diabetes-and-the-role-of-bile-acids-in-metabolism
#2
Gerald H Tomkin, Daphne Owens
Bile acids have many activities over and above their primary function in aiding absorption of fat and fat soluble vitamins. Bile acids are synthesized from cholesterol, and thus are involved in cholesterol homeostasis. Bile acids stimulate glucagon-like peptide 1 (GLP1) production in the distal small bowel and colon, stimulating insulin secretion, and therefore, are involved in carbohydrate and fat metabolism. Bile acids through their insulin sensitising effect play a part in insulin resistance and type 2 diabetes...
June 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28137663/central-mechanisms-of-airway-sensation-and-cough-hypersensitivity
#3
REVIEW
Alexandria K Driessen, Alice E McGovern, Monica Narula, Seung-Kwon Yang, Jennifer A Keller, Michael J Farrell, Stuart B Mazzone
The airway sensory nervous system is composed of two anatomically distinct processing pathways that allow for the production of respiratory reflexes and voluntary evoked respiratory behaviours in response to sensing an airway irritation. Disordered sensory processing is a hallmark feature of many pulmonary disorders and results in the development of cough hypersensitivity syndrome, characterised by chronic cough and a persistent urge-to-cough in affected individuals. However, the mechanism underpinning how the airway sensory circuits become disordered, especially at the level of the central nervous system, is not well understood...
January 27, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28100479/evidence-of-central-sensitisation-in-those-with-dry-eye-symptoms-and-neuropathic-like-ocular-pain-complaints-incomplete-response-to-topical-anaesthesia-and-generalised-heightened-sensitivity-to-evoked-pain
#4
Ashley M Crane, William Feuer, Elizabeth R Felix, Roy C Levitt, Allison L McClellan, Konstantinos D Sarantopoulos, Anat Galor
OBJECTIVE: To evaluate how closely neuropathic-like ocular pain (NOP) symptoms align with a metric of central sensitisation (ie, the presence of persistent ocular pain after topical anaesthetic placement) in individuals with dry eye (DE) symptoms. DESIGN: Cross-sectional study of 224 individuals with DE symptoms seen in the Miami Veterans Affairs eye clinic. An evaluation was performed consisting of questionnaires regarding DE symptoms, NOP descriptors and evoked pain sensitivity testing on the forehead and forearm, followed by a comprehensive ocular surface examination including corneal mechanical sensitivity testing...
January 18, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28092404/metformin-versus-myoinositol-which-is-better-in-obese-pcos-patients-a-randomized-controlled-crossover-study
#5
Valeria Tagliaferri, Daniela Romualdi, Valentina Immediata, Simona De Cicco, Christian Di Florio, Antonio Lanzone, Maurizio Guido
CONTEXT: due to the central role of metabolic abnormalities in the pathophysiology of PCOS, insulin sensitising agents have been proposed as a feasible treatment option. OBJECTIVE: to investigate which is the more effective between metformin and myoinositol on hormonal, clinical and metabolic parameters in obese patients with polycystic ovary syndrome (PCOS). STUDY DESIGN: crossover randomized-controlled study. PATIENTS: Thirty-four PCOS obese women (age: 25...
January 16, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28035535/the-role-of-the-gastrointestinal-microbiota-in-visceral-pain
#6
Kieran Rea, Siobhain M O'Mahony, Timothy G Dinan, John F Cryan
A growing body of preclinical and clinical evidence supports a relationship between the complexity and diversity of the microorganisms that inhabit our gut (human gastrointestinal microbiota) and health status. Under normal homeostatic conditions this microbial population helps maintain intestinal peristalsis, mucosal integrity, pH balance, immune priming and protection against invading pathogens. Furthermore, these microbes can influence centrally regulated emotional behaviour through mechanisms including microbially derived bioactive molecules (amino acid metabolites, short-chain fatty acids, neuropeptides and neurotransmitters), mucosal immune and enteroendocrine cell activation, as well as vagal nerve stimulation...
December 30, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28034321/comorbidity-in-allergic-asthma-and-allergic-rhinitis-functional-somatic-syndromes
#7
Georgios Tsiakiris, Gregory Neely, Nina Lind, Steven Nordin
Based on the concept of central sensitisation, the present study tested the hypothesis of comorbidity in allergic asthma and allergic rhinitis with diagnoses of functional somatic syndromes (FSSs), including fibromyalgia, irritable bowel syndrome and migraine. Data were used from the population-based Västerbotten Environmental Health Study (n = 3406). The participants consisted of 164 individuals with allergic asthma and 298 individuals with allergic rhinitis as well as 2876 individuals without allergic or non-allergic asthma, allergic rhinitis or atopic dermatitis...
December 30, 2016: Psychology, Health & Medicine
https://www.readbyqxmd.com/read/28011992/appl1-prevents-pancreatic-beta-cell-death-and-inflammation-by-dampening-nf%C3%AE%C2%BAb-activation-in-a-mouse-model-of-type-1-diabetes
#8
Xue Jiang, Yawen Zhou, Kelvin K L Wu, Zhanrui Chen, Aimin Xu, Kenneth K Y Cheng
AIMS/HYPOTHESIS: Beta cell inflammation and demise is a feature of type 1 diabetes. The insulin-sensitising molecule 'adaptor protein, phosphotyrosine interacting with PH domain and leucine zipper 1' (APPL1), which contains an NH2-terminal Bin/Amphiphysin/Rvs domain, a central pleckstrin homology domain and a COOH-terminal phosphotyrosine-binding domain, has been shown to modulate inflammatory response in various cell types but its role in regulating beta cell mass and inflammation in type 1 diabetes remains unknown...
March 2017: Diabetologia
https://www.readbyqxmd.com/read/27976369/clomiphene-and-other-antioestrogens-for-ovulation-induction-in-polycystic-ovarian-syndrome
#9
REVIEW
Julie Brown, Cindy Farquhar
BACKGROUND: Subfertility due to anovulation is a common problem in women. First-line oral treatment is with antioestrogens such as clomiphene citrate, but resistance may be apparent with clomiphene. Alternative and adjunctive treatments have been used including tamoxifen, dexamethasone, and bromocriptine. The effectiveness of these is to be determined. OBJECTIVES: To determine the relative effectiveness of antioestrogen agents including clomiphene alone or in combination with other medical therapies in women with subfertility associated with anovulation, possibly caused by polycystic ovarian syndrome...
15, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27859794/the-perception-of-affective-touch-in-parkinson-s-disease-and-its-relation-to-small-fibre-neuropathy
#10
Lewis Kass-Iliyya, Matthew Leung, Andrew Marshall, Paula Trotter, Christopher Kobylecki, Susannah Walker, David Gosal, Maria Jeziorska, Rayaz A Malik, Francis McGlone, Monty A Silverdale
Affective touch sensation is conducted by a sub-class of C-fibres in hairy skin known as C-Tactile (CT) afferents. CT afferents respond maximally to gentle skin stroking at velocities between 1 and 10 cm/s. Parkinson's disease (PD) is characterised by markedly reduced cutaneous C-fibres. It is not known if affective touch perception is influenced by C-fibre density and if affective touch is impaired in PD compared to healthy controls. We predicted that perceived pleasantness to gentle stroking in PD would correlate with C-afferent density and that affective touch perception would be impaired in PD compared to healthy controls...
January 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27834406/-complaints-of-pain-in-the-orofacial-area-of-non-odontogenic-origin
#11
B Stegenga
Complaints of pain in the orofacial area usually are odontogenic in origin or have to do with temporomandibular dysfunction. Dentists can, nevertheless, be confronted with a number of disorders that are non-odontogenic in nature. In such instances it is not always a matter of nociceptive pain, associated with somatic damage, but the pain can also be the result of nerve damage (neuropathic pain) or of changes that may occur within the central nervous system (central sensitisation). In most of these cases, the pain is chronic in nature...
November 2016: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/27779724/central-sensitisering-bakom-sv%C3%A3-rbehandlad-specifik-sm%C3%A3-rta-sm%C3%A3-rtmekanism-vid-fibromyalgi-kan-f%C3%A3-rklara-%C3%A3-ven-l%C3%A3-ngvariga-organrelaterade-sm%C3%A3-rttillst%C3%A3-nd
#12
Jan Lidbeck
Central sensitisation and chronic organ-related pain Central sensitisation is an essential mechanism in chronic musculoskeletal pain. In recent years, increasing evidence has come to light suggesting that central sensitisation is also a cause of chronic organ-related pain. This has several important implications. One is the need for broader professional education in mechanism-based pain classification. Today, simple clinical diagnostic procedures are used for the identification of central sensitisation in chronic musculoskeletal disorders, and these may also prove useful in the classification of organ-related pain...
October 25, 2016: Läkartidningen
https://www.readbyqxmd.com/read/27751847/osimertinib-for-pretreated-egfr-thr790met-positive-advanced-non-small-cell-lung-cancer-aura2-a-multicentre-open-label-single-arm-phase-2-study
#13
Glenwood Goss, Chun-Ming Tsai, Frances A Shepherd, Lyudmila Bazhenova, Jong Seok Lee, Gee-Chen Chang, Lucio Crino, Miyako Satouchi, Quincy Chu, Toyoaki Hida, Ji-Youn Han, Oscar Juan, Frank Dunphy, Makoto Nishio, Jin-Hyoung Kang, Margarita Majem, Helen Mann, Mireille Cantarini, Serban Ghiorghiu, Tetsuya Mitsudomi
BACKGROUND: Osimertinib (AZD9291) is an oral, potent, irreversible EGFR tyrosine-kinase inhibitor selective for EGFR tyrosine-kinase inhibitor sensitising mutations, and the EGFR Thr790Met resistance mutation. We assessed the efficacy and safety of osimertinib in patients with EGFR Thr790Met-positive non-small-cell lung cancer (NSCLC), who had progressed after previous therapy with an approved EGFR tyrosine-kinase inhibitor. METHODS: In this phase 2, open-label, single-arm study (AURA2), patients aged at least 18 years with centrally confirmed EGFR Thr790Met-positive mutations, locally advanced or metastatic (stage IIIB/IV) NSCLC who progressed on previous EGFR tyrosine-kinase inhibitor therapy received osimertinib 80 mg orally once daily; treatment could continue beyond progression if the investigator observed a clinical benefit...
December 2016: Lancet Oncology
https://www.readbyqxmd.com/read/27733199/identification-of-clinical-phenotypes-in-knee-osteoarthritis-a-systematic-review-of-the-literature
#14
A Dell'Isola, R Allan, S L Smith, S S P Marreiros, M Steultjens
BACKGROUND: Knee Osteoarthritis (KOA) is a heterogeneous pathology characterized by a complex and multifactorial nature. It has been hypothesised that these differences are due to the existence of underlying phenotypes representing different mechanisms of the disease. METHODS: The aim of this study is to identify the current evidence for the existence of groups of variables which point towards the existence of distinct clinical phenotypes in the KOA population. A systematic literature search in PubMed was conducted...
October 12, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27612660/serum-concentration-of-ketamine-and-antinociceptive-effects-of-ketamine-and-ketamine-lidocaine-infusions-in-conscious-dogs
#15
RANDOMIZED CONTROLLED TRIAL
Ubedullah Kaka, Bullo Saifullah, Adamu Abdul Abubakar, Yong Meng Goh, Sharida Fakurazi, Asmatullah Kaka, Atique Ahmed Behan, Mahdi Ebrahimi, Hui Cheng Chen
BACKGROUND: Central sensitization is a potential severe consequence of invasive surgical procedures. It results in postoperative and potentially chronic pain enhancement. It results in postoperative pain enhancement; clinically manifested as hyperalgesia and allodynia. N-methyl-D-aspartate (NMDA) receptor plays a crucial role in the mechanism of central sensitisation. Ketamine is most commonly used NMDA-antagonist in human and veterinary practice. However, the antinociceptive serum concentration of ketamine is not yet properly established in dogs...
September 9, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27598780/-terminology-and-pathophysiology-of-overactive-bladder-oab
#16
K Höfner
In 2002, the International Continence Society defined the term overactive bladder (OAB) as a symptom syndrome that is accompanied by urgency with or without urge incontinence, frequency and nocturia. A proven urinary tract infection or other obvious pathologies must be excluded.The pathophysiology of OAB has not been clarified in detail and is the subject of ongoing research, so partially overlapping hypotheses exist. The urothelium-based hypothesis suggests functional changes of urothelial receptors as well as functional changes regarding the sensitivity and coupling of the suburothelial myofibroblasts, which ultimately lead to increasing activity of afferent signals and urgency...
December 2016: Aktuelle Urologie
https://www.readbyqxmd.com/read/27433936/alfaxalone-anaesthesia-facilitates-electrophysiological-recordings-of-nociceptive-withdrawal-reflexes-in-dogs-canis-familiaris
#17
James Hunt, Jo Murrell, David Knazovicky, John Harris, Sara Kelly, Toby G Knowles, B Duncan X Lascelles
Naturally occurring canine osteoarthritis represents a welfare issue for affected dogs (Canis familiaris), but is also considered very similar to human osteoarthritis and has therefore been proposed as a model of disease in humans. Central sensitisation is recognized in human osteoarthritis sufferers but identification in dogs is challenging. Electromyographic measurement of responses to nociceptive stimulation represents a potential means of investigating alterations in central nociceptive processing, and has been evaluated in conscious experimental dogs, but is likely to be aversive...
2016: PloS One
https://www.readbyqxmd.com/read/27431455/the-potential-role-of-neuropathic-mechanisms-in-dry-eye-syndromes
#18
Charles W Mcmonnies
Dry eye syndromes can involve both nociceptive and neuropathic symptoms. Nociceptive symptoms are the normal physiological responses to noxious stimuli. Neuropathic symptoms are caused by a lesion or disease of the somatosensory nervous system and can be the result of hypersensitisation of peripheral or central corneal and conjunctival somatosensory nerves. For example, inflammation could induce neuroplastic peripheral sensitisation of the ocular surface or lid wiper and exacerbate nociceptive symptoms. Neuropathic symptoms may explain the incommensurate relation between signs and symptoms in some dry eye syndromes although absence of signs of a dry eye syndrome may also be a consequence of inappropriate methods used when examining for them...
January 2017: Journal of Optometry
https://www.readbyqxmd.com/read/27356616/synthesis-and-photophysical-properties-of-ir-iii-re-i-dyads-control-of-ir%C3%A2-re-photoinduced-energy-transfer
#19
Suad T Saad, Alexander J Metherell, Elizabeth Baggaley, Michael D Ward
A series of dinuclear Ir(iii)/Re(i) complexes has been prepared based on a family of symmetrical bridging ligands containing two bidentate N,N'-chelating pyrazolyl-pyridine termini, connected by a central aromatic or aliphatic spacer. The Ir(iii) termini are based on {Ir(F2ppy)2}(+) units (where F2ppy is the cyclometallating anion of a fluorinated phenylpyridine) and the Re(i) termini are based on {Re(CO)3Cl} units. Both types of terminus are luminescent, with the Ir-based unit showing characteristic strong, structured phosphorescence in the blue region (maximum 452 nm) with a triplet excited state energy of 22 200 cm(-1) and the Re-based unit showing much weaker and lower-energy phosphorescence (maximum 530 nm) with a triplet excited state energy of 21 300 cm(-1)...
July 28, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27296456/short-term-effects-of-greater-occipital-nerve-blocks-in-chronic-migraine-a-double-blind-randomised-placebo-controlled-clinical-trial
#20
María L Cuadrado, Ángel Aledo-Serrano, Patricia Navarro, Pedro López-Ruiz, César Fernández-de-Las-Peñas, Inés González-Suárez, Aida Orviz, Cristina Fernández-Pérez
BACKGROUND: Greater occipital nerve (GON) blocks are widely used for the treatment of headaches, but quality evidence regarding their efficacy is scarce. OBJECTIVE: The objective of this article is to assess the short-term clinical efficacy of GON anaesthetic blocks in chronic migraine (CM) and to analyse their effect on pressure pain thresholds (PPTs) in different territories. PARTICIPANTS AND METHODS: The study was designed as a double-blind, randomised, placebo-controlled clinical trial...
June 12, 2016: Cephalalgia: An International Journal of Headache
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