Treatment Of Glabellar Frown Lines Research Articles

Botulinum toxin type E: A review

AbstractBackgroundBotulinum toxin type A (BoNT‐A) and botulinum toxin type B are the only two serotypes of botulinum toxin currently available for therapeutic use. Recently, botulinum toxin type E (BoNT‐E) has been explored for clinical use due to its pharmacological properties. BoNT‐E has a faster onset of action and a shorter duration of effect compared to BoNT‐A.MethodsA literature review of BoNT‐E in terms of its mechanism of action, efficacy, and treatment applications.ResultsBoNT‐E has thus far demonstrated efficacy in the treatment of glabellar frown lines. Additional potential applications include the treatment of focal muscle pain and the reduction of postoperative scars.ConclusionBoNT‐E products have the potential to fulfill an unmet need for patients considering first‐time use of botulinum toxin for esthetic purposes and for patients seeking rapid results.

Anatomical Injection Guidelines for Glabellar Frown Lines Based on Ultrasonographic Evaluation.

When botulinum neurotoxin (BoNT) is injected to treat glabellar frown lines, the corrugator supercilia muscle (CSM) and procerus muscles are the main targets. Although there have been many studies on the treatment of glabellar frown lines, no study has confirmed the dynamic movement under ultrasonography (US). This study examined and evaluated dynamic muscle movements under US, thereby providing more effective BoNT injection guidelines for glabellar frowning. Glabellar frowning was categorized as either Type A or B. Type A is the general frowning pattern in which vertical wrinkles are made by contracting the CSM and procerus muscles (81%, n = 13). On US images, the procerus muscle thickens and the bilateral CSMs contract. Type B is an upward frowning pattern demonstrating upward elevation of vertical wrinkles due to hyperactive contraction of the frontalis muscle during frowning (19%, n = 3). On US images, the hypoechoic frontalis muscle thickens, forming horizontal forehead lines. After BoNT injection into the CSM and frontalis muscle but not the procerus muscle, Type B patterns showed improvements in the vertical crease and horizontal forehead line. Both types showed improvement in glabellar frown lines after conventional injection, but the horizontal forehead line did not improve in Type B. Type B wrinkles improved after additional injections into the frontalis muscle. This study provided novel anatomical findings related to the injection of glabellar frown lines with BoNT. Preliminary analysis and optimized procedures using US will enable more effective and safer injections.

Antidepressant-Like Properties of Intrastriatal Botulinum Neurotoxin-A Injection in a Unilateral 6-OHDA Rat Model of Parkinson's Disease.

Parkinson’s patients often suffer from depression and anxiety, for which there are no optimal treatments. Hemiparkinsonian (hemi-PD) rats were used to test whether intrastriatal Botulinum neurotoxin-A (BoNT-A) application could also have antidepressant-like properties in addition to the known improvement of motor performance. To quantify depression- and anxiety-like behavior, the forced swim test, tail suspension test, open field test, and elevated plus maze test were applied to hemi-PD rats injected with BoNT-A or vehicle. Furthermore, we correlated the results in the forced swim test, open field test, and elevated plus maze test with the rotational behavior induced by apomorphine and amphetamine. Hemi-PD rats did not show significant anxiety-like behavior as compared with Sham 6-OHDA- + Sham BoNT-A-injected as well as with non-injected rats. However, hemi-PD rats demonstrated increased depression-like behaviors compared with Sham- or non-injected rats; this was seen by increased struggling frequency and increased immobility frequency. Hemi-PD rats intrastriatally injected with BoNT-A exhibited reduced depression-like behavior compared with the respective vehicle-receiving hemi-PD animals. The significant effects of intrastriatally applied BoNT-A seen in the forced swim test are reminiscent of those found after various antidepressant drug therapies. Our data correspond with the efficacy of BoNT-A treatment of glabellar frown lines in treating patients with major depression and suggest that also intrastriatal injected BoNT-A may have some antidepressant-like effect on hemi-PD.

An observational study on glabellar wrinkle patterns in Indians.

Botulinum A exotoxin is an established treatment for glabellar frown lines, crow's feet, and horizontal furrows of the forehead. The glabella is probably the most common site for botulinum toxin treatment in Asians. Five glabellar contraction patterns have been classified in earlier studies based on eyebrow approximation, depression, and elevation. Unfortunately, this was found to be confusing by many practitioners. Indians, as all Asians, have smaller muscles compared to the European population, and there is no consensus on the optimal dosage per injection site or concentration of toxin to be used. (a) Identification and classification of glabellar wrinkle patterns in Indians. (b) Optimization of the minimal effective dose of toxin per site. Retrospective photographic analysis of 200 patients who received botulinum toxin for the first time to treat glabellar wrinkles was conducted. The wrinkle patterns were identified and classified by the authors based on the prevalence of perpendicular and transverse glabellar lines, nasal, and forehead wrinkles. Six patterns were identified: (1) 11 (2) U (3) Pi (4) X (5) W (6) I. The relevant muscles were identified and doses optimized for those sites. The doses mentioned in this study are not universal for all patients and toxin units would have to be altered and individualized according to the bulk of the facial muscles and individual needs. The investigators classification, injection patterns, and dosage may provide valuable guidance to facial esthetic treatment.

«Off-label» use of botulinic toxin type A preparations in neurological practice

The modern view on the application of botulinum toxin type A for the off-label use in neurology and foreign experience analysis are presented. The «off-label» category referred to any prescription of a medication in case of using it for unregistered indications, with product instruction violation or in the presence of contraindications including age restrictions. The sources of information about medicines were the leaflets of manufacturers of medicines and the State Register of Medicines. It is well known that Botulinum toxin type A is a good therapeutic option for treating children with cerebral palsy. Increased efficacy of regularly repeated cycles with Onabotulinumtoxin A in medication-overuse headache patients beyond the first year of treatment. Botulinum toxin type A is effective in the management of sialorrhea. Botulinum toxin type A is a safe and effective treatment for primary axillary hyperhidrosis and produces high levels of patient satisfaction. Facing depression with botulinum toxin: positive effects on mood have been observed in subjects who underwent treatment of glabellar frown lines with botulinum toxin and, in an open case series, depression remitted or improved after such a treatment. Botox injection significantly improved foot dystonia, pain and lower limb functional outcomes in patients with Parkinson’s disease with deep brain stimulation. The paper describes the problems associated with the lack of clinical data about the possibility of using botulinum toxin type A in different conditions, emphasizes the need to organize clinical trials and educational programs for neurologists as well as more active implementation of protocols for the treatment of patients.

Escalating doses of incobotulinumtoxinA for extended treatment of glabellar frown lines: safety and efficacy results from a randomized, double-blind study

Escalating doses of incobotulinumtoxinA for extended treatment of glabellar frown lines: safety and efficacy results from a randomized, double-blind study

Efficacy of incobotulinumtoxinA for treatment of glabellar frown lines in male subjects: Post hoc analyses from randomized, double-blind pivotal studies

Efficacy of incobotulinumtoxinA for treatment of glabellar frown lines in male subjects: Post hoc analyses from randomized, double-blind pivotal studies

Safety, efficacy, and onset of a novel botulinum toxin type A (Nabota) for the treatment of glabellar frown lines: a single-arm, prospective, phase 4 clinical study.

BackgroundSafety, efficacy, and time to onset of effect of botulinum toxin type A is of importance to persons who seek improvement in glabellar frown lines, but this has not been well studied. The aim of this study was to determine the safety, efficacy, and onset of action of a newly developed botulinum toxin type A (Nabota) for the treatment of glabellar frown lines.MethodsThis was a single-arm, open-label, and phase 4 clinical study. Forty-two subjects with glabellar lines were treated with five times of intramuscular injection of 0.1 mL (4 U/0.1 mL) for a total of 20 U of Nabota. Efficacy and safety were assessed at 2, 3, 4, 5, and 14 days. Efficacy was assessed by the investigator and it was defined as a 1-point change on a 4-point scale.ResultsImprovement in glabellar frown lines at maximum frown was observed in 85.4% of subjects 2 days after administration. Improvement in glabellar lines at rest was observed in 51.2% of subjects 2 days after administration, and the proportion of subjects showing improvement increased with time. No severe adverse events were recorded.ConclusionOnset of action was observed in the majority of subjects by 2 days after administration of Nabota. In addition, Nabota was found to be safe and effective for the treatment of glabellar frown lines.

Efficacy of incobotulinumtoxinA for the treatment of glabellar frown lines in male subjects: Post hoc analyses from randomized double-blind pivotal studies

BACKGROUNDMales are increasingly seeking minimally invasive cosmetic procedures such as botulinum toxin injection. However, few studies have specifically examined the efficacy of such procedures among men.OBJECTIVETo assess the efficacy of incobotulinumtoxinA for treating glabellar frown lines (GFLs

Efficacy of IncobotulinumtoxinA for the Treatment of Glabellar Frown Lines in Male Subjects: Post-Hoc Analyses from Randomized. Double-Blind Pivotal Studies

Abstract Not Available

Efficacy and patient satisfaction with incobotulinumtoxinA for the treatment of glabellar frown lines.

This study describes the physician experience relating to the effectiveness of incobotulinumtoxinA and patient satisfaction with its use for the treatment of glabellar frown lines (GFLs). A total of 17 patients from six dermatological clinics, aged > 18 years and with mild to very severe GFLs at maximum frown, were included. Patients were excluded if they had treatment with resorbable fillers and botulinum toxins in the preceding six months, or non-resorbable fillers or surgery in the treatment area. Injection sites (range 3-5) were chosen depending on their severity (dose range 12-20 U), covering corrugators and procerus muscles. Physicians assessed improvements to GFLs using the Merz scale on Days 4 and 14 after treatment. Patients completed a self-reported questionnaire on their facial wrinkles on Days 2 and 4 after treatment. Most (76.5%) patients were women. The mean age of the patients was 46.9 ± 10.0 years. Mean severities (on the Merz scale) for at-rest and dynamic (with expression) GFLs at baseline were 1.3 ± 1.10 and 3.4 ± 0.38, respectively, and decreased on Day 14 (p < 0.05). Treatment response rates (> 1-point improvement) for at-rest and dynamic (with expression) GFLs on Day 4 were 40% and 100%, respectively. All patients reported being satisfied or very satisfied, and 64.3%-71.4% indicated that their facial wrinkles had improved on Day 2. IncobotulinumtoxinA was fast acting with visible improvements by Day 4 and all patients expressed satisfaction with their treatment after two days. GFLs saw the most improvement among the facial characteristics measured.

IncobotulinumtoxinA for Aesthetic Indications: A Systematic Review of Prospective Comparative Trials

IncobotulinumtoxinA is a botulinum toxin type A (BoNTA) indicated for temporary improvement in the appearance of upper facial lines with well-established efficacy and safety profiles. Whether incobotulinumtoxinA and other BoNTAs are equipotent is subject of debate. To compare the efficacy of incobotulinumtoxinA and other BoNTAs for aesthetic applications. PubMed and Embase were systematically searched for prospective clinical trials comparing incobotulinumtoxinA with onabotulinumtoxinA, abobotulinumtoxinA, or placebo for aesthetic applications. Fifteen articles met the selection criteria. Two studies found that incobotulinumtoxinA was noninferior or equivalent to onabotulinumtoxinA for the treatment of glabellar frown lines (GFLs). Eight studies found no difference in efficacy between incobotulinumtoxinA and other BoNTAs. One study suggested differences in response rates at certain time points between incobotulinumtoxinA and onabotulinumtoxinA for GFLs, and one suggested differences for dynamic horizontal forehead lines but not for GFLs or lateral periorbital lines, but both had study design issues limiting the ability to draw conclusions. Finally, 3 placebo-controlled studies demonstrated the efficacy of incobotulinumtoxinA for treating GFLs and upper facial lines. The weight of the evidence from comparative clinical trials indicates that incobotulinumtoxinA, onabotulinumtoxinA, and abobotulinumtoxinA have similar efficacy for aesthetic applications.

Percutaneous Myotomy With a Small Needle-Knife and Lipoinjection for Treatment of Glabellar Frown Lines

Glabellar frown lines are a common aesthetic concern, and minimally invasive techniques to treat frown lines have become popular. The authors developed a technique to minimize frown lines by means of percutaneous myotomy with a small needle-knife and lipoinjection. Sixty-nine patients underwent treatment of the glabellar frown lines in a prospective study. Percutaneous myotomy of the corrugator supercilii and procerus was conducted with a small needle-knife, and autologous fat was transferred to the glabellar region. Two independent investigators assessed improvement of the glabellar frown lines by applying the Merz Facial Wrinkle Scale preoperatively and 6 months postoperatively. Improvement by ≥1 point was regarded as a response to treatment. Patients also conducted a self-assessment based on the Global Aesthetic Improvement Scale. The mean follow-up period was 8 months. The evaluators determined that the glabellar frown lines of 62 patients (89.9%) responded to treatment. For 4 patients (5.8%), the frown lines were partially improved, and the frown lines did not improve for 3 patients (4.3%). In a self-assessment, 64 patients (92.8%) perceived improvement in their frown lines 6 months postoperatively. No serious complications were recorded. Treatment of glabellar frown lines by percutaneous myotomy with a small needle-knife and lipoinjection is reliable and minimally invasive. 4.

Facing depression with botulinum toxin: Literature review

IntroductionAffecting over 120 million people, major depressive disorder (MDD) is characterized by low mood, lack of interest and a cluster of other vegetative and cognitive symptoms causing significant distress of functioning. It has a relapsing and recurring course and frequently becomes chronic. Thus, there is a need to further develop therapeutic techniques to improve the course and the prognosis of depressive disorders. Recent clinical trials suggest that botulinum toxin (BTX) treatment may also have an antidepressant effect.ObjectiveThe authors aim to conduct a non-systematic review in order to understand the relationship between MDD and BTX treatment.AimsTo assess whether current evidence supports the BTX to treat major depressive patients.MethodsA non-systematic review of English scientific literature was conducted through research in the PubMed search engine, using the keywords “botulinum toxin” and “depression”.ResultsThere is a small but growing body of evidence suggesting that botulinum toxin may be useful for the treatment of depression. The main hypothesis for the proposed beneficial effects of botulinum toxin is through the facial feedback. Low mood and depression are often associated with a sad facial expression. Injecting botulinum toxin and improving facial expression would lead to the improvement of depression symptoms.ConclusionsPositive effects on mood have been observed in subjects who underwent treatment of glabellar frown lines with botulinum toxin. It supports the concept that the facial musculature not only expresses, but also regulates mood states.Disclosure of interestThe authors have not supplied their declaration of competing interest.

A Randomized, Double-Blind Trial to Investigate the Equivalence of IncobotulinumtoxinA and OnabotulinumtoxinA for Glabellar Frown Lines.

IncobotulinumtoxinA and onabotulinumtoxinA are indicated for the temporary improvement in the appearance of glabellar frown lines (GFL). This is the first randomized direct comparator study to date, at the Food and Drug Administration-recommended dose of 20 units (U), for the treatment of GFL. To investigate the dose equivalence of incobotulinumtoxinA (20 U) and onabotulinumtoxinA (20 U) for the treatment of moderate-to-severe GFL. Prospective, randomized (1:1), double-blinded, parallel-group study in 250 females (18-50 years), employing a single treatment with incobotulinumtoxinA or onabotulinumtoxinA, followed by a 4-month observational period. At the primary efficacy endpoint (1 month after treatment), incobotulinumtoxinA was equivalent to onabotulinumtoxinA in the treatment of GFL at the 20 U dose within the prespecified ± 15% margin of equivalence. Efficacy remained similar between treatment groups through 4 months after treatment as assessed by the independent masked panel and the masked treating physicians. Patient satisfaction ratings were similar between groups and favorable (>90%) throughout. Both treatments were well tolerated. Equivalence was demonstrated at the primary endpoint between incobotulinumtoxinA and onabotulinumtoxinA in the treatment of GFL at the 20 U dose at 1 month. Similar efficacy and tolerability profiles were observed through 4 months after treatment.

Depression – An emerging indication for botulinum toxin treatment

The treatment of glabellar frown lines with botulinum toxin injection is one of the most prevalent procedures in esthetic medicine. It is possible that the popularity of this intervention is not only owing to its cosmetic effect but also to modulatory effects on mood and affectivity.Recently, a series of studies including three randomized controlled trials have consistently shown that such effects can be used in the treatment of depression. Predominantly female patients suffering from partly chronic and treatment resistant unipolar depression experienced a quick, strong and sustained improvement in depressive symptoms after a single glabellar treatment with botulinum toxin A as a sole or adjunctive therapy.If these findings are further corroborated in additional studies, the ever-growing spectrum of applications for botulinum toxin may spread into the field of psychiatry, showing that the superficial paralysis of facial muscles may, probably via proprioceptive feedback mechanisms, have profound effects on the emotional brain.

Patient-centric dose equivalency pilot study of incobotulinumtoxin a (xeomin) vs. abobotulinumtoxin a (dysport) in the treatment of glabellar frown lines

Aim: Incobotulinumtoxin A (xeomin) has been proposed as an alternative to abobotulinumtoxin A (dysport) and onabotulinumtoxin A (Botox) in the treatment of glabellar frown lines. A recent study is comparing abobotulinumtoxin A and onabotulinumtoxin A revealed equivalent efficacy with a dose conversion ratio of 2.5:1. We sought to establish effectiveness and dosing equivalency of incobotulinumtoxin A vs. abobotulinumtoxin A. Methods: Inclusion criteria for this pilot study included patients of a single surgeon (LAC) who had previously received a constant dose of abobotulinumtoxin A over at least four consecutive treatment sessions for the previous 12 months to achieve an 85-90% elimination of dynamic glabellar frown lines. The primary outcome sought dose comparison between established maintenance abobotulinumtoxin A dosing and incobotulinumtoxin A first-time dosing. A 2:1 conversion (abobotulinumtoxin A: incobotulinumtoxin A) was chosen in most patients. Secondary outcomes were patient-reported onset of effect, physician-assessed effect at 10-12 weeks, pain associated with administration, and patient perceived need for re-treatment at 2 weeks. Results: A total of 32 subjects were included. The mean dose of incobotulinumtoxin A was 17.1 units (± 6.1, the median dose 20 units). The mean dose of abobotulinumtoxin A was 27.6 (± 11.7, the median dose 27.5 units). The mean difference in treatment units was -10.5 (95% confidence interval, P vs. 90.3% (± 1.8) with abobotulinumtoxin A ( P Conclusion: We found incobotulinumtoxin A at 17.1 (± 6.1) units to be less effective than abobotulinumtoxin A at 27.6 (± 11.7) units in the treatment of glabellar frown lines at 10-12 weeks postadministration. Dosing was less predictable than dosing associated with abobotulinumtoxin A treatment. Larger, randomized controlled trials are indicated to further delineate these differences and to clarify whether this difference from previously published incobotulinumtoxin A dosing may have been due to the small sample size.

Optimal dosage of botulinum toxin type A for treatment of glabellar frown lines: efficacy and safety in a clinical trial.

Various preparations of botulinum toxin type A (BTX-A) are used to reduces glabellar (frown) lines. However, dose-related safety and efficacy of intramuscular injections of a widely used, locally produced BTX-A in China has not been established. Assessment of dose-dependent safety and efficacy of Chinese botulinum toxin type A (Hengli BTX-A [HBTX-A]) intramuscular injections on glabellar lines. Four hundred eighty-eight BTX-A-naive participants were included in the double-blind trial and randomly divided into placebo (n = 122), low-dose (n = 183), and high-dose (n = 183) treatment groups for injection with saline solution, 10 units and 20 units of HBTX-A, respectively, at 4 sites in the corrugator muscle and 1 site in the procerus muscle. Outcomes were recorded before treatment and after 7, 30, 60, and 120 days, including glabellar line severity at maximum contraction and relaxation. Significantly greater improvement was observed in both HBTX-A groups in comparison with the placebo group (p < .05). Better efficacy was obtained in the high-dose treatment group. More participants developed adverse events after treatment with HBTX-A doses, than with the placebo (p < .05). Twenty-unit HBTX-A provided optimal improvement in glabellar lines, and its use might minimize injection frequency while maintaining acceptable safety.

Efficacy of incobotulinumtoxinA for treatment of glabellar frown lines: a post hoc pooled analysis of 2 randomized, placebo-controlled, phase 3 trials.

Botulinum neurotoxin type A trials in aesthetic indications have used differing efficacy parameters and responder definitions. To analyze the treatment efficacy and duration of incobotulinumtoxinA for glabellar frown lines using pooled data from 2 large, Phase 3, placebo-controlled trials, and end points similar to those used in previous botulinum neurotoxin type A studies. IncobotulinumtoxinA and placebo groups comprised 366 and 181 subjects, respectively. The efficacy of a single 20-U treatment of incobotulinumtoxinA or placebo was evaluated by investigator-assessed and subject-assessed responder rates (≥ 1-point improvement from baseline), mean score, and mean change from the baseline glabellar frown line severity score. At all follow-up visits, responder rates and mean change from the baseline score (investigator-assessed and subject-assessed) were significantly greater for incobotulinumtoxinA versus placebo (p < .0001). The maximum investigator-assessed responder rate (93.1%) was achieved at Day 30 after treatment, when the mean improvement on the 4-point facial wrinkle scale peaked at 1.88. Treatment effect declined over time but the investigator-assessed responder rate was 45.7% at the end of the study. Superiority of incobotulinumtoxinA over placebo for treating glabellar frown lines was confirmed. IncobotulinumtoxinA achieved a maximum responder rate of 93.1% and a long duration of treatment effect: 45.7% of subjects showed efficacy at 120 days.

Efficacy of incobotulinumtoxinA for treatment of glabellar frown lines: A post hoc pooled analysis of 2 randomized, placebo-controlled phase III trials

Efficacy of incobotulinumtoxinA for treatment of glabellar frown lines: A post hoc pooled analysis of 2 randomized, placebo-controlled phase III trials