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Botulinum toxin a

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https://www.readbyqxmd.com/read/29160548/botulinum-toxin-for-treating-unilateral-apraxia-of-eyelid-opening-in-a-patient-with-congenital-myotonia
#1
Estrella Fernández, Marta Latasiewicz, Laura Pelegrin, Manuel Romera, Silvana Schellini, Alicia Galindo-Ferreiro
A 37-year-old female presented with severe apraxia of lid opening (ALO) affecting the right upper lid associated with Becker congenital myotonia (MC). The patient had a history of right upper lid ptosis for 25 years that was exacerbated over the previous month with severe incapacity to open her right eye. No other associated neurological or ophthalmic symptoms were observed. The patient was treated with botulinum toxin (BoNT-A) injection into the pretarsal and lateral canthus region of the orbicularis oculi of the affected eyelid...
September 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/29159196/botulinum-toxin-treatment-for-hypersalivation-in-anti-nmda-receptor-encephalitis
#2
Jin-Sun Jun, Han Gil Seo, Soon-Tae Lee, Kon Chu, Sang Kun Lee
Hypersalivation is one of the intractable symptoms of anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis. While anticholinergic medications partially improve the hypersalivation, they can aggravate the autonomic dysfunctions associated with anti-NMDAR encephalitis. Thus, we investigated the efficacy and safety of botulinum toxin type A injection on hypersalivation refractory to anticholinergics in six patients with anti-NMDAR encephalitis. Hypersalivation was well-controlled without remarkable adverse reaction over 16 weeks after botulinum toxin type A, although two patients were reinjected at 12 weeks due to reaggravation of hypersalivation...
November 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29158500/use-dependent-potentiation-of-voltage-gated-calcium-channels-rescues-neurotransmission-in-nerve-terminals-intoxicated-by-botulinum-neurotoxin-serotype-a
#3
Phillip H Beske, Katie M Hoffman, James B Machamer, Margaret R Eisen, Patrick M McNutt
Botulinum neurotoxins (BoNTs) are highly potent toxins that cleave neuronal SNARE proteins required for neurotransmission, causing flaccid paralysis and death by asphyxiation. Currently, there are no clinical treatments to delay or reverse BoNT-induced blockade of neuromuscular transmission. While aminopyridines have demonstrated varying efficacy in transiently reducing paralysis following BoNT poisoning, the precise mechanisms by which aminopyridines symptomatically treat botulism are not understood. Here we found that activity-dependent potentiation of presynaptic voltage-gated calcium channels (VGCCs) underlies 3,4-diaminopyridine (3,4-DAP)-mediated rescue of neurotransmission in central nervous system synapses and mouse diaphragm neuromuscular junctions fully intoxicated by BoNT serotype A...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158482/structural-basis-for-the-unique-ganglioside-and-cell-membrane-recognition-mechanism-of-botulinum-neurotoxin-dc
#4
Sicai Zhang, Ronnie P-A Berntsson, William H Tepp, Liang Tao, Eric A Johnson, Pål Stenmark, Min Dong
Botulinum neurotoxins (BoNTs), the most potent toxins known, are potential bioterrorism agents. It is well established that all seven serotypes of BoNTs (BoNT/A-G) require complex gangliosides as co-receptors. Here, we report that BoNT/DC, a presumed mosaic toxin between BoNT/D and BoNT/C1, binds and enters efficiently into neurons lacking complex gangliosides and shows no reduction in toxicity in mice deficient in complex gangliosides. The co-crystal structure of BoNT/DC with sialyl-Thomsen-Friedenreich antigen (Sialyl-T) suggests that BoNT/DC recognizes only the sialic acid, but not other moieties in gangliosides...
November 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/29157315/botulinum-toxin-type-a-injections-as-monotherapy-for-upper-limb-essential-tremor-using-kinematics
#5
Olivia Samotus, Niraj Kumar, Philippe Rizek, Mandar Jog
BACKGROUND: There is a significant need for a targeted therapy for essential tremor (ET), as medications have not been developed specifically for ET, and the ones prescribed are often not well-tolerated, so that many patients remain untreated. Recent work has shown that, unlike previous experience, kinematically guided individualized botulinum toxin type A (BoNT-A) injections provide benefit along with minimal weakness. Ours is the first long-term (96-week) safety and efficacy study of BoNT-A as monotherapy for ET using kinematically driven injection parameters...
November 21, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29156545/ultrasonographic-evaluation-of-botulinum-toxin-injection-site-for-the-medial-approach-to-tibialis-posterior-muscle-in-chronic-stroke-patients-with-spastic-equinovarus-foot-an-observational-study
#6
Alessandro Picelli, Alessio Baricich, Elena Chemello, Nicola Smania, Carlo Cisari, Marialuisa Gandolfi, Nicoletta Cinone, Maurizio Ranieri, Andrea Santamato
The tibialis posterior muscle is a frequent target for injection of botulinum toxin during the management of spastic equinovarus foot in adults with post-stroke spasticity. Although it is deep-seated, the needle insertion into the tibialis posterior muscle is usually performed using anatomical landmarks and safety information obtained from healthy subjects and cadavers. Our aim was to evaluate the botulinum toxin injection site for the medial approach to the tibialis posterior muscle in chronic stroke patients with spastic equinovarus foot...
November 18, 2017: Toxins
https://www.readbyqxmd.com/read/29154085/btx-a-has-notable-effects-contradicting-some-treatment-aims-in-the-rat-triceps-surae-compartment-which-are-not-confined-to-the-muscles-injected
#7
Can A Yucesoy, Filiz Ateş
Botulinum toxin type-A (BTX-A) is widely used in treating gastrocnemius medial (GM) and lateral (GL) muscles in cerebral palsy to improve joint motion. However, recent animal experiments indicate inferior BTX-A effects beyond the injected muscle. The goal was to test the following hypotheses in a rat model. (1) BTX-A injected into the GM and GL does not spread into the soleus (SOL), and muscles exposed show (2) a wider length range of force exertion (Lrange), (3) reduced passive forces and (4) no intermuscular interaction effects...
November 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29152739/first-bite-syndrome-following-transcervical-arterial-ligation-after-transoral-robotic-surgery
#8
Michael C Topf, Ethan Moritz, John Gleysteen, Joseph M Curry, David M Cognetti, Adam J Luginbuhl
OBJECTIVE: To assess the incidence of first bite syndrome (FBS) in transoral robotic surgical (TORS) patients undergoing transcervical arterial ligation. METHODS: Retrospective case series of all patients diagnosed with FBS following prophylactic transcervical arterial ligation of branches of the external carotid system between March 2010 and December 2016 at a single academic center. RESULTS: Six patients with FBS after TORS with transcervical arterial ligation were evaluated, representing 7% of all patients who underwent neck dissection with concomitant transcervical arterial ligation (6 of 83)...
November 20, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29152423/foodborne-botulism-i-only-had-nacho-cheese-a-case-report
#9
Saad A Choudhry, Muhammad Jahanzaib Anwar, Muhammad Afzal, Abdul Shah
A 32-year-old female presented to the emergency department with complaints of diplopia, followed by dyspnea, chest tightness, congestion, and dysphagia. The patient was resuscitated and initial investigations were done. Within a few hours of the admission, she started developing signs of respiratory failure and was intubated and placed on the mechanical ventilator. The patient denied any ingestion of exotic food, shellfish, raw meat, or raw fish. The patient also denied traveling to any exotic place or recent camping trips...
September 8, 2017: Curēus
https://www.readbyqxmd.com/read/29150297/prolonged-stretching-of-the-ankle-plantarflexors-elicits-muscle-tendon-adaptations-relevant-to-ankle-gait-kinetics-in-children-with-spastic-cerebral-palsy
#10
Teresa Martín Lorenzo, Eduardo Rocon, Ignacio Martínez Caballero, Ana Ramírez Barragán, Sergio Lerma Lara
Tissue related ankle hyper-resistance has been reported to contribute to equinus gait in children with spastic cerebral palsy. Hence, ankle plantarflexor stretching programs have been developed in order to restore passive ankle dorsiflexion. Despite high quality evidence on the limited effects of stretching on passive joint mobility, further muscle-tendon adaptations have been reported which may impact gait performance. As such, children with spastic cerebral palsy subject to long-term manual static stretching achieved dorsiflexion gains through the reduction of muscle and fascicle strain whilst preserving tendon strain, and prolonged use of ankle-foot orthoses achieved similar dorsiflexion gains through increased tendon strain whilst preserving muscle and fascicle strain...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29146092/ultrasonographic-evaluation-of-changes-in-the-muscle-architecture-of-the-gastrocnemius-with-botulinum-toxin-treatment-for-lower-extremity-spasticity-in-children-with-cerebral-palsy
#11
Akihiro Kawano, Taiichiro Yanagizono, Ichiro Kadouchi, Tetsuya Umezaki, Etsuo Chosa
BACKGROUND: Botulinum toxin A treatment involves injecting botulinum toxin A to relax muscle spasticity. Using ultrasonography, this study examined changes in the muscle architecture before and after treatment to evaluate the influence of botulinum toxin A injection on muscles. METHODS: The participants included 18 children (mean age, 6.2 years) with cerebral palsy who were treated with botulinum toxin A for lower extremity spasticity and 27 healthy children (mean age, 6...
November 13, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29145580/effect-of-botulinum-toxin-a-on-muscle-healing-and-its-implications-in-aesthetic-and-reconstructive-surgery
#12
Eldad Silberstein, Ehud Maor, Oleg Sukmanov, Alexander Bogdanov Berezovsky, Yaron Shoham, Yuval Krieger
Background: Muscle activity contributes to the enhancement of facial aging deformity, blepharospasm, cerebral palsy spasticity, trismus, torticollis, and other conditions. Myotomy of the involved muscles in order to reduce the deformity has variable success rates due to muscle healing and regeneration of activity. Objectives: The goal of this study was to investigate whether blocking striated muscle activity with Botulinum toxin (BtxA) during the healing time after myotomy alters the healing process and reduces long-term muscle activity...
November 14, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29145188/brueghel-syndrome-or-meige-syndrome-two-sides-of-a-same-disease
#13
M Béreau, L Tatu
Different eponyms such as "Wood syndrome," Meige syndrome, "Brueghel syndrome," "Blepharospasm plus syndrome" have been used to describe segmental craniocervical dystonias. These facial and/or oromandibular movement disorders are characterized by muscle contractions and spasms involving eyes, facial region, and sometimes pharynx, jaw, floor of the mouth, and tongue. The pathophysiology of craniocervical dystonia is poorly understood, but abnormal plasticity and impaired inhibition are suspected. Injection of botulinum toxin appears to be the best therapeutic option for treating segmental craniocervical dystonia...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29141611/are-paraspinous-intramuscular-injections-of-botulinum-toxin-a-bont-a-efficient-in-the-treatment-of-chronic-low-back-pain-a-randomised-double-blinded-crossover-trial
#14
Mélanie Cogné, Hervé Petit, Alexandre Creuzé, Dominique Liguoro, Mathieu de Seze
BACKGROUND: Treatment for patients with chronic low-back pain (LBP) is a public health issue. Intramuscular injections of botulinum toxin A (BoNT-A) have shown an analgesic effect on LBP in two previous randomized controlled studies. The objective of the study was to verify the efficacy of paravertebral injections of BoNT-A in patients with LBP. METHODS: Patients were included in this phase 3 randomized double-blinded trial comparing the efficacy of BoNT-A versus placebo in a crossover study on LBP...
November 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29141256/thrombosis-prevention-with-botulinum-toxin-a-after-traumatic-crush-injury-in-a-rat-model
#15
Seyed Esmail Hassanpour, Mohammadreza Tarahomi, Amir Daryani
No abstract text is available yet for this article.
November 15, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29140753/a-mutated-recombinant-subunit-vaccine-protects-mice-and-guinea-pigs-against-botulinum-type-a-intoxication
#16
Chi Ho Yu, Dong Hyun Song, Jun Young Choi, Hae Eun Joe, Woo Hyeon Jeong, Gyeung Haeng Hur, Young Kee Shin, Seong Tae Jeong
Botulinum neurotoxins (BoNTs) are the most potent toxins to mammals. A toxoid vaccine was previously used for prevention of botulinum intoxication; however, this vaccine is no longer available. Currently, no approved botulinum vaccines are available from the Food and Drug Administration (FDA). Recently, a recombinant host cell receptor-binding subunit created for use as a potential vaccine completed phase 2 clinical trials. The current study designed a vaccine candidate against BoNT type A (BoNT/A) using a structural design...
November 15, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29140286/evidence-to-use-botulinum-toxin-injections-in-tension-type-headache-management-a-systematic-review
#17
REVIEW
Mieszko Wieckiewicz, Natalia Grychowska, Marek Zietek, Gniewko Wieckiewicz, Joanna Smardz
Tension-type headache (TTH) is the most common type of chronic recurring head pain. It can occur twice as often in women as in men. It is the most common type of headache. Its lifetime prevalence is 30% to 78% in the general population. TTH treatment should be multilevel. It often consists of taking pain medication, muscle relaxants, antidepressants, using biofeedback therapy, acupuncture, and attending behavioral therapy. Several clinical trials also suggest that botulinum toxin (BTX) may be an effective treatment option for such patients...
November 15, 2017: Toxins
https://www.readbyqxmd.com/read/29138154/pharmacologic-management-of-chronic-neuropathic-pain-review-of-the-canadian-pain-society-consensus-statement
#18
REVIEW
Alex Mu, Erica Weinberg, Dwight E Moulin, Hance Clarke
OBJECTIVE: To provide family physicians with a practical clinical summary of the Canadian Pain Society (CPS) revised consensus statement on the pharmacologic management of neuropathic pain. QUALITY OF EVIDENCE: A multidisciplinary interest group within the CPS conducted a systematic review of the literature on the current treatments of neuropathic pain in drafting the revised consensus statement. MAIN MESSAGE: Gabapentinoids, tricyclic antidepressants, and serotonin-norepinephrine reuptake inhibitors are the first-line agents for treating neuropathic pain...
November 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/29138040/ultrasound-finding-of-ischiofemoral-impingement-syndrome-and-novel-treatment-with-botulinum-toxin-chemodenervation-a-case-report
#19
Yin-Ting Chen, Keyonna M Jenkins
Ischiofemoral impingement syndrome (IFIS) is a rare and poorly understood condition that leads to deep gluteal pain, groin, and/or medial thigh pain. It has unique diagnostic challenges, with limited non-operative treatment options. It is caused by the impingement of the quadratus femoris by the lesser trochanter and the ischium. Currently there are no validated physical examination maneuvers for IFIS, and the value of ischiofemoral interval for establishing IFIS is also uncertain. Ultrasound-guided corticosteroid injections have been reported...
November 11, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29134730/role-of-central-versus-peripheral-opioid-system-in-antinociceptive-and-anti-inflammatory-effect-of-botulinum-toxin-type-a-in-trigeminal-region
#20
V Drinovac Vlah, B Filipović, L Bach-Rojecky, Z Lacković
BACKGROUND: Although botulinum toxin type A (BT-A) is approved for chronic migraine treatment, its site and mechanism of action are still elusive. Recently our group discovered that suppression of CGRP release from dural nerve endings might account for antimigraine action of pericranially injected BT-A. We demonstrated that central antinociceptive effect of BT-A in sciatic region involves endogenous opioid system as well. Here we investigated possible interaction of BT-A with endogenous opioid system within the trigeminal region...
November 13, 2017: European Journal of Pain: EJP
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