Low Level Laser Therapy Effects in Peripheral Nerves Patient With Leprosy.
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|ClinicalTrials.gov Identifier: NCT03072004|
Recruitment Status : Unknown
Verified March 2017 by Elaine Fávaro Pípi Sabino, Federal University of Uberlandia.
Recruitment status was: Recruiting
First Posted : March 7, 2017
Last Update Posted : March 7, 2017
|First Submitted Date ICMJE||February 14, 2017|
|First Posted Date ICMJE||March 7, 2017|
|Last Update Posted Date||March 7, 2017|
|Actual Study Start Date ICMJE||January 27, 2017|
|Estimated Primary Completion Date||December 1, 2017 (Final data collection date for primary outcome measure)|
|Current Primary Outcome Measures ICMJE
||Change from Baseline Conduction Velocity at 28 days after LLLT. [ Time Frame: Patients will be assessed one day before the first day of LLLT application and after 28 days of LLLT application. ]
Will be performed on the MEB4200K, the active recording electrode is placed on the center o the muscle belly, and the reference electrode is placed distally, over the muscle tendon. Below is a description of the technique employed in each of these nerves: Ulnar Motor Nerve: Normal values: Amplitude≥ 3.80mv, conduction velocity ≥ 50m/s, distal latency ≤ 3.1 m/s. Delta conduction velocity (difference between the distal segment and the elbow segment)≥10m/s; (b)Common Peroneal Motor Study: Normal values: Amplitude ≥ 2.80 mv, conduction velocity ≥ 40m/s, distal latency(handle)≤ 5.0 msec. Delta conduction velocity (difference between the distal segment and the peroneal head segment)≥10m/s.
|Original Primary Outcome Measures ICMJE||Same as current|
|Change History||No Changes Posted|
|Current Secondary Outcome Measures ICMJE
|Original Secondary Outcome Measures ICMJE||Same as current|
|Current Other Pre-specified Outcome Measures||Not Provided|
|Original Other Pre-specified Outcome Measures||Not Provided|
|Brief Title ICMJE||Low Level Laser Therapy Effects in Peripheral Nerves Patient With Leprosy.|
|Official Title ICMJE||Evaluation of Low Level Laser Therapy Effects in Peripheral Nerves Patient Affected With Leprosy : Randomized Controlled Trial|
|Brief Summary||We are going to investigate leprosy patients with neuropathies. This problem can lead to changes in nerve function and lead to disability. We will investigate a protocol with LLLT to improve pain, inflammation, and to prevent disabilities. We will test two groups, which will be divided into control and LLLT treated patients. In this groups we will perform quantitative measurements of the following parameters before and after the protocol application: electroneuromyography and muscle strength measurements, evaluation of activity limitation and risk awareness, evaluation of tactile sensitivity and evaluation of temperatures of hands and feet. Averages for all parameters will be compared before and after treatment (12 application sessions). We believe that LLLT can become an important alternative treatment to improve conduction velocity, tactile sensitivity, temperatures of hands and feet, muscle strength and pain, which will prevent nerve damage and disabilities|
Leprosy is an infectious disease caused by Mycobacterium leprae, which is an obligate intracellular bacillus with the capacity to invade cells of the peripheral nervous system (Nations et al., 1998). This disease presents polymorphic clinical features, and the destruction of peripheral nerves is relevant, resulting in irreversible disabilities with great social and psychological impact (Martins et al., 2008).
Among the 250,000 new cases of leprosy detected worldwide every year, 12% to 55% demonstrate diagnosis of sensory, motor or autonomic neuropathy (Saunderson et al., 2000). The destruction of nerve fibers in patients with leprosy can be established by the presence of inflammatory process and the development of autoimmunity and cytotoxicity (Birdi et al., 1996), including nerve growth factor (Facer et al., 1998), glia cells' adhesion molecules, interferon-gamma,Transforming Growth Factor - Beta (Goulart et al., 1996; Goulart et al., 2000), Tumor Necroses Factor-alpha (Singh, 1998) and interleukins (IL-6, IL-8, IL-12 and IL-10) (Mendonça et al., 2008).
Low Level Laser Therapy (LLLT) has been demonstrated as a promising treatment in neural rehabilitation. Some studies, has demonstrated that LLLT presented positive results in improving nerve conduction velocity. The literature has provided evidences for the effectiveness of LLLT treatment in neural rehabilitation, and it may be a promising tool for leprosy neuropathies rehabilitation.
LLLT provided improvements in clinical and electrophysiological parameters in humans with ulnar neuropathy and this modality showed a satisfying short-term effectiveness in the treatment of this pathology (Ozkan et al., 2014). Other studies have shown that the LLLT application in diabetic polyneuropathy presented positive results in improving nerve conduction velocity (Khamseh et al., 2011).
Such neuropathies are associated with significant physical disabilities, generating high social-economic cost, an important challenge for clinical interventions. Currently, leprosy neuropathies are treated with standard protocols, using either corticoid treatment regimens and/or surgical interventions for nerve decompression. Therefore, LLLT may be a novel auxiliary therapeutic resource in leprosy in order to improve patients' nerve conduction velocity, diminish pain, and minimize physical disabilities, probably reducing the usage period of maximum dose of corticoids, and the number of surgical procedures in the future. Furthermore, this therapeutic approach is also a non-invasive treatment and has a relatively low cost.
Despite the absence of studies on LLLT effects in affected nerves of patients with leprosy, there are some studies showing positive effects in other neuropathies, such as: improvement in clinical and electrophysiological parameters, reduction of pain, improvement of inflammation in nerve entrapment neuropathy, as well as for the promotion of nerve regeneration. Considering that LLLT approach may promote analgesic effects (Chen et al., 2014; Ozkan et al., 2014), improve clinical and electrophysiological parameters (Ozkan et al., 2014; Khamseh et al., 2011), induce anti-inflammatory effects and nerve repair (Chen et al., 2014; Lazovic et al., 2014; Alcântara et al., 2013; Hsieh et al., 2012), and reduce degeneration of the myelin sheat by increasing conduction velocity (Khamseh et al., 2011) in other neuropathologies, we believe that LLLT may also promote the favourable effects in leprosy neuropathy.
This work aims to evaluate the effects of the application of LLLT in the peripheral nerve of leprosy patients. This project was approved N. 989.148/2015 by the Research Ethics Committee of the Federal University of Uberlandia. A randomized, double-blind, placebo-controlled clinical trial will be conducted from January 2017 to December 2019.
The patients will be recruited at the National Reference Centre for Sanitary Dermatology and Leprosy (CREDESH), Federal University of Uberlandia (UFU), State of Minas Gerais, Brazil and then will be informed about the study procedures and will sign the informed consent form. CREDESH is a public health care facility in an endemic region where routine prevention, including intradermal Bacilo Calmette-Guérin (BCG) vaccination, Household Contacts (HHCs) monitoring, early case detection and treatment are available and are under supervision, with multidisciplinary team.
Adult patients (n=92) aged 18-60 years old diagnosed with presence of focal demyelinating neuropathy in compression sites of the ulnar and common peroneal nerves. The patients are selected of household contacts group who became ill during the follow up for 5 to 7 years in the epidemiological surveillance program of the CREDESH/UFU. Clinical dermato-neurological examination, serology anti-PGL-1 are performed annually. When participants present more than one positive result during follow-up, they will undergo in six slit-skin smear sampling for bacilloscopy and quantitative PCR (qPCR) M. leprae DNA with M. leprae-specific repetitive element (RLEP3) detection (lobes of the right and left ears; right and left elbow and right and left knee). Then, the patients are forwarded for dermato-neurological examination, sensitivity and muscle force evaluation (hands, feet and eyes), incapacity degree evaluation, electroneuromyography examination of upper and lower limb. All patients will be treated with multidrug therapy (MDT), according to their operational classification (Paucibacillary - PB and Multibacillary - MB) and their Ridley Jopling classification (tuberculoid and/or borderline tuberculoid (TT), borderline-borderline (BB), borderline lepromatous (BL) and lepromatous (LL)). The patients will be randomized and divided into two groups:
|Study Type ICMJE||Interventional|
|Study Phase ICMJE||Not Applicable|
|Study Design ICMJE||Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description:
We will analyze leprosy patients with neuropathy. These patients will be randomly divided in: (a) Control: who will receive simulated application "sham" of LLLT; and (b) LLLT: who will receive LLLT (830 nm, continuous emission, 100mW output power and 3J power density). Treatments will occur in 12 sessions (3 times per week) on the nerves: a)ulnar: around the ulnar nerve at the elbow region, and b)common peroneal: surrounding fibular head. For the inclusion criteria will be selected leprosy patients (tuberculoid and borderline tuberculoid forms) with focal demyelinating neuropathy of the ulnar and common peroneal nerves by electroneuromyography (ENMG); patients without leprosy reactions and corticoid use. We will perform measurements of the following parameters before and after the LLLT protocol application: ENMG Muscle Strength; Tactile Sensitivity measured; Pain Intensity; Incapacity grade; Infrared thermography; Screening of Activity Limitation and Safety Awareness scale.Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
|Condition ICMJE||Leprosy Neuropathy|
|Study Arms ICMJE||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Unknown status|
|Estimated Enrollment ICMJE
|Original Estimated Enrollment ICMJE||Same as current|
|Estimated Study Completion Date ICMJE||March 1, 2019|
|Estimated Primary Completion Date||December 1, 2017 (Final data collection date for primary outcome measure)|
|Eligibility Criteria ICMJE||
|Ages ICMJE||18 Years to 60 Years (Adult)|
|Accepts Healthy Volunteers ICMJE||No|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Listed Location Countries ICMJE||Brazil|
|Removed Location Countries|
|NCT Number ICMJE||NCT03072004|
|Other Study ID Numbers ICMJE||37474214.4.0000.5152|
|Has Data Monitoring Committee||Yes|
|U.S. FDA-regulated Product||
|IPD Sharing Statement ICMJE||
|Responsible Party||Elaine Fávaro Pípi Sabino, Federal University of Uberlandia|
|Study Sponsor ICMJE||Federal University of Uberlandia|
|Collaborators ICMJE||Not Provided|
|PRS Account||Federal University of Uberlandia|
|Verification Date||March 2017|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP