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https://www.readbyqxmd.com/read/29775120/successful-improvement-of-pain-symptomatology-in-a-suspected-case-of-cramp-fasciculation-syndrome-via-interventional-pain-treatment
#1
Anita Gupta, Lucas First, Celeste A Swain
Peripheral nerve hyperexcitability (PNH) syndromes are a rare set of neuromuscular disorders that include cramp-fasciculation syndrome (CFS) and Isaacs syndrome (IS). Successful treatment of these diseases has been achieved with antiepileptic medications; however, chronic pain symptoms can persist. We provide a case report of a 25-year-old female who has suffered from painful severe muscle spasms and fasciculations since childhood. With CFS as our working diagnosis, a treatment regimen using interventional pain techniques, including sympathetic chain blocks, ketamine infusions, and trigger point injections, resulted in a significant decrease in the patient's chronic pain symptoms...
May 18, 2018: Journal of Pain & Palliative Care Pharmacotherapy
https://www.readbyqxmd.com/read/29771804/preemptive-analgesia-decreases-pain-following-anorectal-surgery-a-prospective-randomized-double-blinded-placebo-controlled-trial
#2
Justin T Van Backer, Matthew R Jordan, Danielle T Leahy, Jesse S Moore, Peter Callas, Timothy Dominick, Peter A Cataldo
BACKGROUND: Postoperative pain is a frequent cause for delayed discharge following outpatient procedures, including anorectal surgery. Both central and peripheral pain receptor sensitization are thought to contribute to postoperative pain. Blocking these receptors and preempting sensitization prevents hyperalgesia leading to lower pain medication requirements. Studies in the orthopedic, urologic, and gynecologic literature support this practice, but the use of preemptive analgesia in anorectal surgery is understudied...
May 15, 2018: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/29763654/obturator-neuromodulation-with-laparoscopic-placement-of-an-obturator-lead-for-the-treatment-of-intractable-opioid-dependent-chronic-pelvic-pain-due-to-obturator-neuralgia
#3
Richard P Marvel
Chronic pelvic pain(CPP) is a common condition in women that can have a devastating effect on quality of life. Some of the most severe forms of CPP are related to peripheral nerve injuries causing persistent neuropathic pain. This is a case of a young woman with severe opioid dependent chronic pelvic and right groin pain due to obturator neuralgia. She had failed a multitude of treatments including multiple medications, manual physical therapy, nerve blocks, surgical neurolysis and spinal cord stimulation without significant benefit...
May 12, 2018: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/29761860/hypermethylation-of-cpg-islands-is-associated-with-increasing-chromosomal-damage-in-chinese-lead-exposed-workers
#4
Li-Bo Yu, Yu-Ting Tu, Jing-Wen Huang, Ya-Nan Zhang, Guo-Qiao Zheng, Xiao-Wen Xu, Jin-Wei Wang, Jean Qin Xiao, David C Christiani, Zhao-Lin Xia
Lead is a widely existing environmental pollutant with potential carcinogenicity. To investigate the association of blood lead level (B-Pb) with potential chromosomal damage and cancer, we analyzed micronucleus (MN) frequency of peripheral blood lymphocytes (PBLs) and the methylation status of six human tumor suppressor genes (TSGs) post lead exposure. In the study, 147 lead-exposed workers were divided into two groups according to their B-Pb P50 value, with other 50 lead-unexposed workers as a control group...
May 15, 2018: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29758104/restricted-speciation-and-supramolecular-assembly-in-the-5f-block
#5
Korey P Carter, Robert G Surbella Iii, Mark Kalaj, Christopher L Cahill
Hybrid materials bearing elements from the 5f block display a rich diversity of coordination geometries, connectivities, and assembly motifs. Exemplary in this regard have been the uranyl coordination polymers, which feature a wide range of secondary building units resulting from hydrolysis and oligomerization of the [UO2]2+ cation. An alternative approach to novel materials, however, suppresses hydrolysis and relies on non-covalent interactions (e.g. hydrogen or halogen bonding) to direct assembly of a more limited suite of species or building units...
May 14, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29754819/blocking-neuronal-signaling-to-immune-cells-treats-streptococcal-invasive-infection
#6
Felipe A Pinho-Ribeiro, Buket Baddal, Rianne Haarsma, Maghnus O'Seaghdha, Nicole J Yang, Kimbria J Blake, Makayla Portley, Waldiceu A Verri, James B Dale, Michael R Wessels, Isaac M Chiu
The nervous system, the immune system, and microbial pathogens interact closely at barrier tissues. Here, we find that a bacterial pathogen, Streptococcus pyogenes, hijacks pain and neuronal regulation of the immune response to promote bacterial survival. Necrotizing fasciitis is a life-threatening soft tissue infection in which "pain is out of proportion" to early physical manifestations. We find that S. pyogenes, the leading cause of necrotizing fasciitis, secretes streptolysin S (SLS) to directly activate nociceptor neurons and produce pain during infection...
May 7, 2018: Cell
https://www.readbyqxmd.com/read/29753264/perineural-dexamethasone-successfully-prolongs-adductor-canal-block-when-assessed-by-objective-pinprick-sensory-testing-a-prospective-randomized-dose-dependent-placebo-controlled-equivalency-trial
#7
James D Turner, Daryl S Henshaw, Robert S Weller, J Douglas Jaffe, Christopher J Edwards, J Wells Reynolds, Gregory B Russell, Sean W Dobson
STUDY OBJECTIVE: To determine whether perineural dexamethasone prolongs peripheral nerve blockade (PNB) when measured objectively; and to determine if a 1 mg and 4 mg dose provide equivalent PNB prolongation compared to PNB without dexamethasone. SETTING: Multiple studies have reported that perineural dexamethasone added to local anesthetics (LA) can prolong PNB. However, these studies have relied on subjective end-points to quantify PNB duration. The optimal dose remains unknown...
May 8, 2018: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/29752218/elevated-international-normalized-ratio-is-not-associated-with-increased-perioperative-morbidity-in-podiatric-limb-salvage-surgery-a-retrospective-analysis
#8
Nalini Vadivelu, Alice M Kai, Feng Dai, Hosni Mikhael, Rima Aouad, Peter Blume
The risk of hemorrhage always exists in anticoagulated patients with an elevated international normalized ratio (INR), a risk that must be measured against the necessity for surgical procedures. The objective of the present retrospective medical record study was to assess the safety with which limb salvage procedures can be conducted in patients with an INR >1.4. The medical records of 231 patients who had undergone limb salvage procedures by 1 surgeon at the Yale New Haven Health System from November 2008 through July 2014 were reviewed...
May 8, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29749407/peripheral-n-methyl-d-aspartate-receptor-localization-and-role-in-gastric-acid-secretion-regulation-immunofluorescence-and-pharmacological-studies
#9
Iuliia Golovynska, Tatiana V Beregova, Tatiana M Falalyeyeva, Ludmila I Stepanova, Sergii Golovynskyi, Junle Qu, Tymish Y Ohulchanskyy
The enteric nervous system (ENS) and a glutamate receptor (GluR), N-methyl-D-aspartate receptor (NMDAR), participate in gastric acid secretion (GAS) regulation. NMDARs are localized in different stomach cells; however, knowledge of NMDAR expression and function in the ENS is limited. In the present study, we clarified the types of stomach cells that express the NMDARs that are involved in GAS regulation. The pharmacological method of isolated stomach perfusion by Ghosh and Shild combined with direct mapping of NMDARs by fluorescence microscopy in the rat stomach was employed...
May 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29748256/structure-mechanism-and-regulation-of-the-chloroplast-atp-synthase
#10
Alexander Hahn, Janet Vonck, Deryck J Mills, Thomas Meier, Werner Kühlbrandt
The chloroplast adenosine triphosphate (ATP) synthase uses the electrochemical proton gradient generated by photosynthesis to produce ATP, the energy currency of all cells. Protons conducted through the membrane-embedded Fo motor drive ATP synthesis in the F1 head by rotary catalysis. We determined the high-resolution structure of the complete cF1 Fo complex by cryo-electron microscopy, resolving side chains of all 26 protein subunits, the five nucleotides in the F1 head, and the proton pathway to and from the rotor ring...
May 11, 2018: Science
https://www.readbyqxmd.com/read/29747078/mechanisms-of-acetylcholinesterase-protection-against-sarin-and-soman-by-adenosine-a-1-receptor-agonist-n-6-cyclopentyladenosine
#11
Ariana Beste, DeCarlos E Taylor, Tsung-Ming Shih, Thaddeus P Thomas
Organophosphorus nerve agents (NAs) irreversibly inhibit acetylcholinesterase (AChE), the enzyme responsible for breaking down the neurotransmitter acetylcholine (ACh). The over accumulation of ACh after NA exposure leads to cholinergic toxicity, seizure, and death. Current medical countermeasures effectively mitigate peripheral symptoms, however; the brain is often unprotected. Alternative acute treatment with the adenosine A1 receptor agonist N6 -cyclopentyladensosine (CPA) has previously been demonstrated to prevent AChE inhibition as well as to suppress neuronal activity...
May 7, 2018: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/29746989/increased-expression-of-transcription-factor-sry-box-containing-gene-11-sox11-enhances-neurite-growth-by-regulating-neurotrophic-factor-responsiveness
#12
Michael P Jankowski, Lauren Miller, H Richard Koerber
The peripherally projecting axons of dorsal root ganglion (DRG) neurons readily regenerate after damage while their centrally projecting branches do not regenerate to the same degree after injury. One important reason for this inconsistency is the lack of pro-regeneration gene expression that occurs in DRG neurons after central injury relative to peripheral damage. The transcription factor SRY-Box containing gene 11 (Sox11) may be a crucial player in the regenerative capacity of axons as previous evidence has shown that it is highly upregulated after peripheral axon damage but not after central injury...
May 7, 2018: Neuroscience
https://www.readbyqxmd.com/read/29746929/trastuzumab-upregulates-pd-l1-as-a-potential-mechanism-of-trastuzumab-resistance-through-engagement-of-immune-effector-cells-and-stimulation-of-ifn%C3%AE-secretion
#13
Bharat K R Chaganty, Songbo Qiu, Anneliese Gest, Yang Lu, Cristina Ivan, George A Calin, Louis M Weiner, Zhen Fan
Here, we report that treatment of syngeneic mouse tumors transduced to overexpress human epidermal growth factor receptor-2 (HER2) with the anti-human HER2 antibody trastuzumab upregulated the level of programmed death-ligand 1 (PD-L1), an important negative regulator of T-cell response, in a transgenic mouse model immune-tolerant to human HER2. We further found that trastuzumab alone had no detectable effect on the level of PD-L1 expression in monocultures of HER2-overexpressing human breast cancer cells but upregulated PD-L1 in the same panel of HER2-overexpressing breast cancer cells when they were co-cultured with human peripheral blood mononuclear cells, and the upregulation of PD-L1 could be blocked by an IFNγ-neutralizing antibody...
May 7, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29742785/-peripheral-regional-anesthesia-without-any-complications-a-dream-comes-true
#14
Thomas Wiesmann, Jens Döffert, Thorsten Steinfeldt
Peripheral regional anesthesia procedures, such as femoral nerve block, are relatively safe procedures in clinical anesthesia. Nevertheless, it may lead to typical, usually transient and rarely even persistent complications. This article aims to highlight key aspects of complications in peripheral regional anesthesia and, in particular, strategies to reduce risk. Moreover, beside general complications, which might potentially occur in any peripheral nerve blockade ("bleeding/infection/nerve damage"), accidental co-blockades of other nerval structures are discussed using the example of the brachial plexus...
April 2018: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/29742684/myocardial-injury-after-noncardiac-surgery-incidence-and-predictors-from-a-prospective-observational-cohort-study-at-an-indian-tertiary-care-centre
#15
Rubin George, Vidya P Menon, Fabia Edathadathil, Sabarish Balachandran, Merlin Moni, Dipu Sathyapalan, Preetha Prasanna, Gokuldas S, Jerry Paul, Chandrababu K K, Lakshmi Kumar, Ashok Pillai
Asymptomatic myocardial injury following noncardiac surgery (MINS) is an independent predictor of 30-day mortality and may go unrecognized based on standard diagnostic definition for myocardial infarction (MI). Given lack of published research on MINS in India, our study aims to determine incidence of MINS in patients undergoing noncardiac surgery at our tertiary care hospital, and evaluate the clinical characteristics including 30-day outcome.The prospective observational study included patients >65 years or >45 years with either hypertension (HTN), diabetes mellitus (DM), coronary artery disease (CAD), cerebrovascular accident (CVA), or peripheral arterial disease undergoing noncardiac surgery...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29738328/persistent-postsurgical-pain-pathophysiology-and-preventative-pharmacologic-considerations
#16
Philippe Richebé, Xavier Capdevila, Cyril Rivat
The development of chronic pain is considered a major complication after surgery. Basic science research in animal models helps us understand the transition from acute to chronic pain by identifying the numerous molecular and cellular changes that occur in the peripheral and central nervous systems. It is now well recognized that inflammation and nerve injury lead to long-term synaptic plasticity that amplifies and also maintains pain signaling, a phenomenon referred to as pain sensitization. In the context of surgery in humans, pain sensitization is both responsible for an increase in postoperative pain via the expression of wound hyperalgesia and considered a critical factor for the development of persistent postsurgical pain...
May 7, 2018: Anesthesiology
https://www.readbyqxmd.com/read/29738094/dodecabromo-and-dodecaiodocentrohexaindane-td-symmetrical-key-building-blocks-for-twelvefold-cross-coupling-reactions-and-sixfold-orthogonal-extension
#17
Jens Linke, Beate Neumann, Hans-Georg Stammler, Dietmar Kuck
Centrohexaindane was converted into its Td-symmetrical 2,3,6,7,10,11,14,15,20,21,26,27-dodecabromo and -dodecaiodo derivatives using N-bromo- and N-iodosuccimide, respectively, in the presence of trifluoromethanesulfonic acid as a catalyst in single, highly efficient steps. Sonication or microwave irradiation was indispensible to enforce exhaustive halogenation of the twelve equivalent peripheral positions of this Cartesian polyaromatic hydrocarbon. In spite of their extremely poor solubility in most organic solvents, the new dodecahalo derivatives were fully characterized, including single crystal X-ray structure analysis...
May 8, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29738061/use-of-ultrasound-guided-supraclavicular-brachial-plexus-block-as-an-anesthesia-technique-in-a-patient-with-neurofibromatosis-type-1-a-case-report
#18
Emine Aysu Şalvız, Emre Sertaç Bingül, Meltem Savran Karadeniz, Ömer Berköz, Erman Ak, Kamil Mehmet Tuğrul
Neurofibromatosis type 1 is an autosomal dominant condition characterized by cutaneous and/or plexiform neurofibromas and hyperpigmented café-au-lait spots. It affects multiple endocrine and visceral organs and can be associated with several difficulties such as potential airway (ventilation/intubation) problems, abnormal spinal anatomy, and peripheral neurofibromas. Therefore, anesthesia technique selection becomes more of an issue in terms of avoiding complications and decreasing morbidity and mortality...
April 2018: Aǧrı: Ağrı (Algoloji) Derneği'nin Yayın Organıdır, the Journal of the Turkish Society of Algology
https://www.readbyqxmd.com/read/29737357/the-global-electrophilicity-index-as-a-metric-for-lewis-acidity
#19
Andrew R Jupp, Timothy C Johnstone, Douglas W Stephan
The global electrophilicity index, GEI, is used as a general, quantitative and base-independent metric of Lewis acidity. This parameter has been benchmarked against the established fluoride ion affinity, FIA, for a range of 22 neutral and cationic Lewis acids from across the p-block, including boranes, trityl derivatives, phosphonium cations and sulfoxonium cations. As a demonstration of utility, the GEI is used to catalogue a library of fluoroaryl boranes as it provides a rapid tool for the comparison of a series of Lewis acids featuring peripheral substituent variation...
May 8, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29732591/differential-conduction-and-cgrp-release-in-visceral-versus-cutaneous-peripheral-nerves-in-the-mouse
#20
Roberto De Col, Karl Messlinger, Tali Hoffmann
Cutaneous afferent nerves convey sensory information from the external, visceral nerves from the internal environment. The saphenous nerve arising from lumbar dorsal root ganglia and the vagus nerve originating in the nodosum ganglia are prototypic examples of such cutaneous and visceral nerves. Despite a common sensory role, these two nerves have distinct embryonic origin and vary in neuropeptide expression. Because of their distinct physiological roles, it is plausible that they differ also in conductive properties...
May 6, 2018: Journal of Neuroscience Research
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