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Neurologia I Neurochirurgia Polska 2020Cervical dystonia is the most frequent form of focal dystonia. It is characterised by involuntary muscular contractions resulting in abnormal head/neck and shoulder... (Review)
Review
INTRODUCTION
Cervical dystonia is the most frequent form of focal dystonia. It is characterised by involuntary muscular contractions resulting in abnormal head/neck and shoulder movements and postures, which can be associated with tremor and pain. Local intramuscular injections of botulinum toxin type A (BoNT-A) is the treatment of choice, being both effective and well-tolerated. However, a considerable number (c. 30%) of patients discontinue this treatment. The aim of this review was to analyse the factors possibly responsible for treatment failures of cervical dystonia (CD), with special regard to the new classification known as the 'Col-Cap' concept and non-motor symptoms.
CLINICAL IMPLICATIONS
Several factors analysed in this review are responsible for effective treatment: proper diagnosis of dystonia and exclusion of pseudodystonias, correct recognition of dystonia pattern and identification of new patterns according to the Col-Cap concept, muscle selection and precise injections under electromyography (EMG) and/or ultrasonography (US) guidance. Furthermore, concomitant diagnosis and treatment of non-motor symptoms such as depression, anxiety, fatigue, sleep problems, phobias and stigmatisation are crucial in obtaining the best overall effect of the treatment. Primary and secondary immunisation and non-responsiveness seem to be marginal problems nowadays due to a low potential of new BoNT-A formulations to produce neutralising antibodies.
FUTURE DIRECTIONS
There is a need for new and relevant scales combining the Col-Cap concept patterns with non-motor symptoms and quality of life. There is also a lack of specific rehabilitation protocols which could enhance BoNT-A treatment results.
Topics: Botulinum Toxins; Humans; Pain; Quality of Life; Torticollis
PubMed: 32285434
DOI: 10.5603/PJNNS.a2020.0021 -
Toxins Dec 2021Hemifacial spasm (HFS) is a movement disorder characterized by involuntary contractions of the facial muscles innervated by the seventh cranial nerve. Generally, it is... (Review)
Review
UNLABELLED
Hemifacial spasm (HFS) is a movement disorder characterized by involuntary contractions of the facial muscles innervated by the seventh cranial nerve. Generally, it is associated with a poor quality of life due to social embarrassment and can lead to functional blindness. Moreover, it is a chronic condition, and spontaneous recovery is rare. Intramuscular injections of Botulinum Toxin (BoNT) are routinely used as HFS treatment.
METHODS
We reviewed published articles between 1991 and 2021 regarding the effectiveness and safety of BoNT in HFS as well as any reported differences among BoNT formulations.
RESULTS
The efficacy of BoNT for HFS treatment ranged from 73% to 98.4%. The mean duration of the effect was around 12 weeks. Effectiveness did not decrease over time. Adverse effects were usually mild and transient. The efficacy and tolerability of the different preparations appeared to be similar. Among the studies, dosage, injected muscles, intervals of treatment, and rating scales were variable, thus leading to challenges in comparing the results.
CONCLUSIONS
BoNT was the treatment of choice for HFS due to its efficacy and safety profile. Further studies are needed to investigate the factors that influence the outcome, including the optimal timing of treatment, injection techniques, dosage, and the best selection criteria for formulations.
Topics: Botulinum Toxins, Type A; Hemifacial Spasm; Humans; Injections, Intramuscular; Neuromuscular Agents; Practice Guidelines as Topic
PubMed: 34941718
DOI: 10.3390/toxins13120881 -
Toxins Feb 2021Botulinum toxin is a superfamily of neurotoxins produced by the bacterium Clostridium Botulinum with well-established efficacy and safety profile in focal idiopathic...
Botulinum toxin is a superfamily of neurotoxins produced by the bacterium Clostridium Botulinum with well-established efficacy and safety profile in focal idiopathic hyperhidrosis. Recently, botulinum toxins have also been used in many other skin diseases, in off label regimen. The objective of this manuscript is to review and analyze the main therapeutic applications of botulinum toxins in skin diseases. A systematic review of the published data was conducted, following Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Botulinum toxins present several label and off-label indications of interest for dermatologists. The best-reported evidence concerns focal idiopathic hyperhidrosis, Raynaud phenomenon, suppurative hidradenitis, Hailey-Hailey disease, epidermolysis bullosa simplex Weber-Cockayne type, Darier's disease, pachyonychia congenita, aquagenic keratoderma, alopecia, psoriasis, notalgia paresthetica, facial erythema and flushing, and oily skin. Further clinical trials are still needed to better understand the real efficacy and safety of these applications and to standardize injection and doses protocols for off label applications.
Topics: Botulinum Toxins; Dermatologic Agents; Dermatology; Female; Humans; Male; Off-Label Use; Patient Safety; Risk Assessment; Risk Factors; Skin Diseases; Treatment Outcome
PubMed: 33562846
DOI: 10.3390/toxins13020120 -
Journal of Neural Transmission (Vienna,... Mar 2021Botulinum toxin (BT) therapy is a complex and highly individualised therapy defined by treatment algorithms and injection schemes describing its target muscles and their...
Botulinum toxin (BT) therapy is a complex and highly individualised therapy defined by treatment algorithms and injection schemes describing its target muscles and their dosing. Various consensus guidelines have tried to standardise and to improve BT therapy. We wanted to update and improve consensus guidelines by: (1) Acknowledging recent advances of treatment algorithms. (2) Basing dosing tables on statistical analyses of real-life treatment data of 1831 BT injections in 36 different target muscles in 420 dystonia patients and 1593 BT injections in 31 different target muscles in 240 spasticity patients. (3) Providing more detailed dosing data including typical doses, dose variabilities, and dosing limits. (4) Including total doses and target muscle selections for typical clinical entities thus adapting dosing to different aetiologies and pathophysiologies. (5) In addition, providing a brief and concise review of the clinical entity treated together with general principles of its BT therapy. For this, we collaborated with IAB-Interdisciplinary Working Group for Movement Disorders which invited an international panel of experts for the support.
Topics: Algorithms; Botulinum Toxins; Botulinum Toxins, Type A; Dystonia; Dystonic Disorders; Humans; Muscle Spasticity
PubMed: 33635442
DOI: 10.1007/s00702-021-02312-4 -
Pharmacology 2015Although botulinum toxin is generally considered safe, its widespread use and the constantly expanded indications raise safety issues. This study aimed to review the... (Review)
Review
Although botulinum toxin is generally considered safe, its widespread use and the constantly expanded indications raise safety issues. This study aimed to review the serious and long-term adverse events associated with the therapeutic and cosmetic use of botulinum toxin. Serious adverse events included dysphagia, respiratory compromise, generalized muscle weakness, marked bilateral ptosis, pseudoaneurysm of the frontal branch of the temporal artery, necrotizing fasciitis, sarcoidal granuloma, Fournier gangrene, and cervical kyphosis. Death was attributed to botulism or anaphylactic shock. In conclusion, botulinum toxin may cause serious adverse events, which are more common after its therapeutic use, but can also be noticed after its cosmetic use. Thorough knowledge of the anatomy of the treated muscles and of the pharmacology of the drug is imperative to avoid serious adverse events.
Topics: Animals; Botulinum Toxins; Drug-Related Side Effects and Adverse Reactions; Humans; Pharmacovigilance
PubMed: 25613637
DOI: 10.1159/000370245 -
Drugs Dec 2021Botulinum toxin type A (BoNTA) products are widely used for therapeutic and aesthetic indications, but there is a need for longer-lasting treatments that maintain... (Review)
Review
Botulinum toxin type A (BoNTA) products are widely used for therapeutic and aesthetic indications, but there is a need for longer-lasting treatments that maintain symptom relief between injections and reduce the frequency of re-treatment. DaxibotulinumtoxinA for Injection (DAXI) is a novel BoNTA product containing highly purified 150-kDa core neurotoxin and is the first to be formulated with a proprietary stabilizing excipient peptide (RTP004) instead of human serum albumin. The positively charged RTP004 has been shown to enhance binding of the neurotoxin to neuronal surfaces, which may enhance the likelihood of neurotoxin internalization. DAXI produces robust, extended efficacy across both aesthetic and therapeutic indications. In an extensive glabellar lines clinical program, DAXI showed a high degree of efficacy, a consistent median time to loss of none or mild glabellar line severity of 24 weeks, and median time until return to baseline of up to 28 weeks. In adults with cervical dystonia, DAXI at 125 U and 250 U significantly improved Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) total scores, with a median duration of efficacy of 24 and 20 weeks, respectively, which compares favorably with the 12-14 weeks' duration reported for approved BoNTA products. Overall, DAXI was well tolerated, and the consistent extended duration of effect suggests that DAXI has the potential to improve the management of both aesthetic and therapeutic conditions.
Topics: Botulinum Toxins, Type A; Clinical Trials as Topic; Delayed-Action Preparations; Dose-Response Relationship, Drug; Humans; Hydrogen-Ion Concentration; Neuromuscular Agents; Peptides; Skin Aging; Torticollis
PubMed: 34787840
DOI: 10.1007/s40265-021-01631-w -
Stomatologija 2021The aim of the systematic review was to analyze the effectiveness of Botox injections for the treatment of the gummy smile.
PURPOSE
The aim of the systematic review was to analyze the effectiveness of Botox injections for the treatment of the gummy smile.
MATERIALS AND METHODS
The systematic literature search was done in the databases: PubMed, Embase and Cochrane Library. The articles published from 2013 to 2020 were searched. Only studies on humans were included in this systematic literature review.
RESULTS
During the initial search a total number of 139 articles were detected. However, after the removal of duplications 105 articles were left. Regarding the application of inclusion and exclusion criteria, 6 articles were selected for this systematic literature review.
CONCLUSIONS
The results of this study suggested that botulinum toxin was an efficient method to treat the gummy smile.
Topics: Botulinum Toxins, Type A; Esthetics, Dental; Gingiva; Humans; Injections, Intramuscular; Smiling
PubMed: 35319495
DOI: No ID Found -
Aesthetic Surgery Journal Nov 2021
Topics: Botulinum Toxins; Botulinum Toxins, Type A; Humans; Hypertrophy; Injections, Intramuscular; Masseter Muscle; Neuromuscular Agents
PubMed: 34223879
DOI: 10.1093/asj/sjab273 -
Toxins Oct 2023Ancient scientific manuscripts indicate that Dr [...].
Ancient scientific manuscripts indicate that Dr [...].
Topics: Botulinum Toxins; Neurotoxins
PubMed: 37888652
DOI: 10.3390/toxins15100621 -
Toxins Nov 2017Botulinum neurotoxin (BoNT) has existed for thousands of years; however, it was not medically utilized until investigations into its therapeutic use began in sincerity... (Review)
Review
Botulinum neurotoxin (BoNT) has existed for thousands of years; however, it was not medically utilized until investigations into its therapeutic use began in sincerity during the late 1970s and 1980s. This, coupled with the reclassification of spasmodic dysphonia as a focal dystonia, led to the use of chemodenervation for this disorder, which has since become a refined technique. Indeed, due to its safety and efficacy, BoNT has been investigated in multiple neurolaryngology disorders, including spasmodic dysphonia, vocal tremor, and muscle tension dysphonia. BoNT has been shown to be a useful and safe adjunct in the treatment for these disorders and may reduce or eliminate oral pharmacotherapy and/or prevent the need for a surgical intervention. We present the historical background, development, proposed mechanisms of action, uses, and techniques for administering BoNT for laryngeal disorders, with a particular focus on spasmodic dysphonia.
Topics: Botulinum Toxins; Humans; Laryngeal Diseases; Larynx; Nerve Block
PubMed: 29099066
DOI: 10.3390/toxins9110356