Efficacy of super-pulsed 905 nm Low Level Laser Therapy (LLLT) in the management of Traumatic Brain Injury (TBI): A case study

Traumatic brain injury is a major health concern worldwide with massive financial and social impact. Conventional treatments primarily focus on the prevention of further damage to the brain parenchyma, while failing to address the already existent symptoms. Previous clinical studies have shown that Low Level Laser Therapy (LLLT) can significantly reduce pain and induce temporary vasodilation in capillaries, which the authors hypothesize can be used to improve the quality of life in TBI patients by treating their current symptoms, which are predominately migraine-like headaches. This case report illustrates the use of LLLT in the treatment of a patient with a TBI and the great clinical success achieved in the reduction of pain, as measured by VAS—achievable within five treatments of 10 minutes in duration.

Effect of low level laser therapy on dental pulp during orthodontic movement

AIM: To validate the protocol described here to be used in future clinical trials related to the effect of laser therapy on dental pulp. METHODS: Histologically treated samples from eight human healthy premolar teeth obtained from the middle root level were distributed in four groups: group 1(G1) absolute control; group 2(G2) only laser irradiation; group 3(G3) exposed only to orthodontics; and group 4(G4) treated with orthodontics and laser. Laser treatment was performed at 830 nm wavelength, 100 mW(energy 80 J/cm2, 2.2 J), for 22 s in the vestibular surface and 22 s in the palatal surface, 1 mm away from the dental root mucosa. Three staining methods were performed: hematoxylin-eosin(HE), Masson's Trichrome method and Gomori's method.RESULTS: The pulp histology parameters were evaluated and the results classified in to 3 parts: an inflammatory response, soft tissue response(dental pulp) and hard tissue response(dentin and predentin). There was no inflammation(chronic or acute) in any of the evaluated groups. The zones of pulp necrosis were found in one premolar of G3 and in one of G4; in groups G2 and G4 there was higher angiogenesis than in the other two groups. G4 group presented the highest level of vascularization. A reduced nerve density was observed in G3. A G2 specimen showed increased nerve density. A higher rate of calcification was observed in G1 compared to G2. Denticles, either real or false, were observed in G1, G2 and G3. Sclerosis of dentin and focal dentin loss was observed among all the groups. Secondary dentin was present in one sample in G1 and G2. A necrosis zone was found in one sample of G3 and G4. No differences between groups were observed in the odontoblast irregularity layer but the layer was wider in the group treated with laser only. A notable difference was detected in reduction of the cell-free layer between the groups G1 and G4. The findings in pulp tissue favor its adaptative response against dental movement induced by orthodontics. No definitive conclusions may be derived as this is a pilot study. CONCLUSION: The protocol described here was shown to be an effective method to evaluate changes in dental pulp submitted to low level laser in teeth under orthodontic movement.

Low-level laser therapy enhances the number of osteocytes in calvaria bone defects of ovariectomized rats

Background : Osteoporosis can make bone repair difficult. Low-level laser therapy( LLLT) has been shown to be a promising tool for bone neoformation. This study aimed to analyze the effect of LLLT on calvaria bone defects of ovariectomized rats using stereology. Methods : Fifty-four Wistar rats were subjected to bilateral ovariectomy, and bone defects were created in calvaria after 150 days. The animals were divided into nine groups(n = ?6 per group), and 24 hours after the bone defects were created they received three, six or 12 sessions of LLLT at 0, 20 or 30 J/cm 2, using a 780-nm low-intensity GaAlAs laser. One-way ANOVA followed by Tukey ' s post hoc test was used for data processing. A difference of P < 0.05 was considered statistically significant. The parameters evaluated were osteocyte density( Nv_(ost)), total osteocyte number( Nto ost), trabecular surface density( Sv_t), and trabecular surface area( Sa_t). Results : Data obtained showed that Nto ost, Sv t, and Sa t in group G2 rats were significantly different from G1(0 J/cm^2)( P < 0.05). Compared to group G4, G5 presented higher values for the parameters Sv t and Sa t, and G6 presented significantly higher values for almost all the analyzed parameters( Nv _(ost), Nto_(ost), Sv_t, and Sa t)( P < 0.05). Compared to group G7, G8 showed a higher value only for the parameter Sa t, and G9 showed significantly higher values for parameters Nv ost, Nto ost, Sv_t, and Sa_t. Conclusion : We conclude that LLLT stimulated bone neoformation and contributed to an increase in the total number of osteocytes, especially with a laser energy density of 30 J/cm^2 given for six and 12 sessions.

Induction of Autologous Bone-Marrow Stem Cells by Low-Level Laser Therapy Has Beneficial Effects on the Kidneys Post-Ischemia-Reperfusion Injury in the Rat

Acute renal failure has a 50% - 80% mortality rate. Currently, treatment options for this life-threatening disease are limited. Low-level laser therapy (LLLT) has been found to modulate biological activity. The aim of the present study was to investigate the possible beneficial effects of laser application to stem cells in the bone marrow, on the kidneys of rats that had undergone ischemia-reperfusion injury (IRI). IRI was induced by occlusion of the renal artery to 3- and 7-month-old rats for 15 or 30 minutes. In an additional experiment IRI was applied to both kidneys for 20 min each in 2-3-month-old rats. Rats were then divided randomly into two groups of control and laser-treated. Laser therapy (Ga-Al-As 810 nm, 200 mW output for 2 min) was applied to the bone marrow 1 and 7 days post-IRI to the kidneys, and rats were sacrificed 2 weeks later. Histomorphometry and immunohistochemistry were performed on kidney sections and blood markers for kidney function. Quantitative histomorphometric analysis revealed a reduction in dilatation of the renal tubules, restored structural integrity of the renal tubules, and reduced necrosis in the laser-treated rats as compared to the control, non-laser-irradiated group. C-kit positive cell density in kidneys post-IRI and laser-treatment was significantly (p = 0.015) 3.2-fold higher compared to the control group. Creatinine and blood urea nitrogen content were significantly lower in the laser-treated rats as compared to control. It is concluded that LLLT application to the bone marrow (BM) causes a significant increase in the density of mesenchymal stem cells in the kidneys post-IRI, probably by induction of stem cells in the BM, which subsequently migrate to the IRI kidney, significantly reducing the pathological features of the kidney and increasing kidney function post IRI.

Effects of wavelength,beam type and size on cerebral low-level laser therapy by a Monte Carlo study on visible Chinese human

Low-level laser therapy(LLLT)has been clinically utilized for many indications in medicine requiring protection from el/issue death,stimulation of healing and repair of injuries,pain reduction,swelling and inflammation.Presently,the use of LLLT to treat stroke,traumnatic brain injury and cognitive dysfunction are attracting growing interest.Near infrared light is capable of penetrating into the cerebral cortex,allowing noninvasive treatments to be caried out with few treatment-related adverse events.Optimization of LLLT treatment flfect is a crucial isse of this field;however,only a few experimental tests on mice for wavelength selection have been reported.We addressed this ssue by low-ost,straightforward and quantitative comparisons on light dosage distribution within visible Chinese human head by Monte Carlo modeling of near infrared light propagation.Optimized selection in wavelength,beam type and size were given based on comparisons among frequently used setups(ie,wavelengths:660,810 and 980 nm;beam type:Gaussian and flat beamn;beam diameter:2,4 and 6 cm).This study provided an fficient way for guiding the optimization of LLLT setup and selection on wavelength,beam type and size for clinical brain LLLT.

Effect of autologous mesenchymal stem cells induced by low level laser therapy on cardiogenesis in the infarcted area following myocardial infarction in rats

In this study, we investigated the hypothesis that photobiostimulation by low-energy laser therapy (LLLT) applied to the bone marrow (BM) of myocardial infarcted rats may attenuate the scarring processes that follow myocardial infarction (MI). Wistar rats underwent experimental MI. LLLT (Ga-Al-As diode laser) was applied to the BM of the exposed tibia at different time intervals post-MI (4 hrs, 48 hrs and 5 days). Sham-operated infarcted rats served as control. Infarct size was significantly reduced (55%) in the laser-treated rats as compared to the control non-treated rats, at 2 weeks post-MI. A significant 3-fold increase was observed in the density of desmin immunopositive stained cells 14 days post-MI in the infarcted area of the laser-treated rats as compared to the non-laser-treated controls. The electron microscopy from the control infarcted rat hearts revealed a typical interphase area between the intact myocardium and the infarcted area, with conspicuous fibroblasts with collagen deposition dispersed among them. In rats that were laser treated (to BM), the interphase zone demonstrated cells with different intracellular structures. There was also a significant increase in the percentage of c-kit positive cells and macrophages in the circulating blood of the laser treated rats as compared to control non treated ones. In the majority of the cells clusters of myofibrils anchored to well-developed Z-lines and structures resembling the morphological characteristics of mature intact cardiomyocytes were evident. In conclusion, LLLT to the BM of rats post-MI induces cardiogenesis mainly at the borders of the infarcted area in the heart.

Effect of Intrauterine Laser Therapy at the IVF Success Rate on Infertile Patients with a History of IVF Failure: A Pilot Non-Blinded Study

Backgrounds: While there’s developing proof aimed toward improving embryo implantation thru a focal point on great development, restrained studies have been performed on enhancing endometrial receptivity. Intrauterine Laser Therapy (LT) can be powerful in selling endometrial cell proliferation, therefore enhancing the achievement of assisted reproductive techniques (ART). The contemporary look at aimed to research the effectiveness of effective intrauterine lasers in growing endometrial thickness and the achievement of being pregnant rate. Materials and Methods: In the current clinical randomized trial (RTC) study, the infertile women (20 - 42 years old) referred to the infertility clinic in 2023-2024 who were candidates for IVF treatment with recurrent implantation failure (RIF) history were included. The patients were divided into two main groups: the intervention group;low level laser therapy (LLLT) after hormone administration) (n = 52) and the control group (hormone administration without LT) (n = 52). The IVF success rate and change in endometrial thickness before and after the LT were compared in groups. Results: There was a significant difference between groups (p Conclusion: It appears that the incorporation of Intrauterine LT in the realm of infertility could significantly impact as a novel supplementary treatment in improving endometrial receptivity and pregnancy rate.

Evaluation of a Newly Developed Laser Pen as a Home Care Device for Pain Reduction of Recurrent Aphthous Stomatitis (Preliminary Study)

Objective: The aim of this survey is to evaluate the effect of a new developed laser pen as a home care device for patients’ pain reduction with recurrent aphthous stomatitis. Background data: Recurrent aphthous stomatitis (RAS) is one of the most common and painful ulcers in the oral cavity. Low Level Laser Therapy (LLLT) has been used successfully for reducing pain and healing time in comparison with corticosteroids and placebo in some studies. But these treatments are done in the clinics and it seems that there is no report of the laser treatment as a home care device up to this study. Methods: This was a prospective, randomized trial pilot study. Thirty patients with RAS were divided into three similar groups. The group one (n = 10) was treated with a diode laser, 660 nm, 40 mw, continuous wave, 1.2 J, 6 J/cm2, for five consecutive days (twice per day, 30 seconds each session). The second group (n = 10) was treated with a topical triamcinolone (adcortyl in orabase) ointment four times per day and the third group (n = 10) was treated with placebo (red light pen) the same way as Group 1. All the patients were evaluated with a Visual Analogue Scale (VAS) before and after treatment on the consecutive days. The data was analysed by one way ANOVA and PostHoc tests. Results: The results show that the laser pen and triamcinolon in orabase ointment have similar results and both have better results than placebo in the control of the recurrent aphthous stomatitis pain (p value: 0.001). Conclusion: In this clinical pilot study the laser pen as a home care device seems to be useful for the treatment of RAS.

Photobiomodulation with Super-Pulsed Laser Shows Efficacy for Stroke and Aphasia: Case Studies

Background: Brain disorders have become more and more common today, due to both the aging population and the ever-expanding sports community. However, a new therapeutic technology called photobiomodulation (PBM) is giving hope to thousands of individuals in need. Traumatic brain injury (TBI), dementia, post traumatic stress (PTSD) and attention deficit (ADD) disorders are in many cases quickly and safely improved by PBM. PBM employs red or near-infrared (NIR) light (600 - 1100 nm) to stimulate healing, protect tissue from dying, increase mitochondrial function, improve blood flow, and tissue oxygenation. PBM can also act to reduce edema, increase antioxidants, decrease inflammation, protect against apoptosis, and modulate the microglial activation state. All these effects can occur when light is delivered to the head, and can be beneficial in both acute and chronic brain conditions. Methods: In this case series, we used a high power, FDA-approved superpulsed laser system applied to the head to treat four chronic stroke patients. Patients received as few as three 6 - 9 minute treatments over a one-week period. The follow up time varied, but in one case was two years. Results: Patients showed significant improvement in their speech and verbal skills. Improvements were also noticed in walking ability, limb movement, less numbness, and better vision. Conclusion: The use of PBM in stroke rehabilitation deserves to be tested in controlled clinical trials, because this common condition has no approved pharmaceutical treatment at present.

物理因子促进干细胞的成骨分化

背景:针对骨缺损传统修复方法的局限性,干细胞广泛应用于再生医学的研究。化学性因子是当前的研究热点,但是近年来的研究证实,国内外应用物理因素调控干细胞分化的研究不断深入,物理因子联合生物支架在骨组织工程中为解决骨缺损修复难题提供了一种新的思路和方法,具有良好的发展前景。目的:就物理因子如电磁场、超声等对干细胞成骨分化的分子机制以及信号通路的调控、在骨组织工程中应用的可行性等方面做一总结。方法:应用计算机检索中国知网和PubMed数据库中近20年的相关文献,在标题和摘要中以“干细胞,骨缺损,成骨分化,电磁场,超声,冲击波,低强度激光,机械力,骨组织工程”或“stem cell,osteoporosis,osteogenic differentiation,Electromagnetic Fields,Ultrasound,Bone Tissue Engineering”为检索词进行检索,对相关文章94篇进行综述分析。结果与结论:(1)物理因子作为一种无创、非接触的辅助疗法对骨组织工程有着显著影响,在调控干细胞的成骨分化、促进细胞的增殖以及在骨工程支架内的生存能力方面有着积极作用。(2)除了激活信号通路和成骨基因转录外,物理因子还可以改善血管化、增加支架中形成的骨的体积、面积和厚度,可以促进骨整合,提高骨支架再生健康骨组织的成功率。(3)然而,将物理因子用于骨组织工程的研究均采用不同的实验条件,如支架类型、细胞类型及干预条件等,无法直接进行比较以确定最佳参数设置,在临床应用中,这些不同干预对促进骨折愈合的有效性研究结果也缺乏一致性,因此未来还需要进一步确定物理因子用于骨组织工程的最佳参数。(4)总体而言,物理因子作为一种理想的辅助疗法,在与各种生物材料结合并应用于骨组织工程方面具有巨大的潜力。

光生物调节诱导间充质干细胞的成骨分化

背景:间充质干细胞是从多种组织中分离出来的多能基质细胞,能够在特定的条件下分化为成骨细胞,光生物调节作为一种外部刺激能够单独或与其他诱导物联合使用加速间充质干细胞成骨分化的进程,从而为解决系列骨疾病提供新的思路。目的:综述光生物调节诱导间充质干细胞成骨分化的相关研究及机制,旨在为选用间充质干细胞作为种子细胞的骨组织工程奠定理论基础,并提出一些发展方向的建议。方法:检索中国知网、PubMed及Wed of Science数据库近年来发表的相关文献,中文检索词为“光生物调节,低功率激光,低水平激光,发光二极管,间充质干细胞,成骨分化,生物材料”;英文检索词为“Photobiomodulation,low level laser(light),light-emitting diode(LED),mesenchymal stem cell,osteogenic differentiation,Biomaterials”,最终纳入88篇文献进行分析。结果与结论:①以低水平激光和发光二极管为代表的光生物调节对于促进间充质干细胞的增殖与分化有着积极的影响。②光生物调节诱导间充质干细胞成骨分化的可行性已在细胞实验、动物实验中得到验证,一方面,光生物调节能够通过激活相关信号通路、上调成骨标志物的表达促进干细胞在体外扩增与分化;另一方面,光生物调节可以提高系统移植的干细胞体内存活率及归巢效应,缩短骨缺损愈合时间。但是光生物调节存在双相剂量效应,各项研究中激光参数、实验环境及细胞类型等要素参差不齐,使得研究结果缺乏一致性,难以推广。③光生物调节可以与生物材料、其他物理因子及药物联合使用加速干细胞成骨分化的进程。④总之,光生物调节因其无创、高效且无明显副反应等优势在医疗领域的应用逐渐广泛;近年来,其在骨组织工程中的作用也逐渐凸显,为骨缺损等疾病的治疗提供了新策略,后续研究应进一步探索光生物调节的标准化治疗参数。

光生物调节疗法在口腔颌面外科领域的应用研究进展

光生物调节疗法(PBMT)不会引起局部温度升高,不会造成组织不可逆的损伤,而且具有止痛、控制炎症、促进骨再生等多种作用,是一种非创伤性、非侵入性、不良反应少、低成本的治疗方法。该文就PBMT机制及其在口腔颌面外科领域的应用进行了综述。

激光治疗膝骨关节炎多途径生物效应的可能机制

背景:激光疗法是一种无创、无痛的治疗手段,由于它操作简单和非侵入性的特点,被认为是治疗骨关节炎的适用方法。目前,激光疗法对组织的作用机制尚不明确,并且其临床应用的研究结果仍存在争议。目的:回顾总结激光疗法治疗膝骨关节炎在细胞水平、动物实验和临床疗效方面的最新研究进展,探讨激光介导多途径生物效应的可能机制,从而为进一步研究激光治疗膝骨关节炎提供理论基础。方法:在中国知网、万方数据、维普和PubMed数据库对2018-2023年发表的有关激光疗法治疗膝骨关节炎的文献进行检索,以“激光疗法,低强度激光疗法,高强度激光疗法,光生物调节,膝关节骨关节炎,软骨细胞”为中文检索词,以“laser therapy,low level laser therapy,high level laser therapy,photobiomodulation,knee osteoarthritis,chondrocytes”为英文检索词。加上手工检索的14篇文献,最终纳入70篇文献进行综述。结果与结论:(1)激光疗法治疗膝骨关节炎主要分为高强度激光和低强度激光两种类型,激光参数和治疗方案的不同会对激光疗效产生直接影响;在使用适当的参数时,低强度激光在细胞实验、动物模型以及临床疗效方面都显示出积极的作用;高强度激光在膝骨关节炎治疗中的研究较少,但一些初步的临床研究结果显示出积极的效果;(2)细胞实验表明,低强度激光可促进软骨细胞增殖和软骨基质合成,从而降低炎症反应;(3)动物实验表明,低强度激光可以减少促炎症因子的释放,促进软骨基质合成,抑制基质降解,有效改善软骨组织的修复过程;低强度激光还能减轻膝骨关节炎过程中的氧化应激损伤,缓解疼痛;(4)在临床试验中,低强度激光和高强度激光均可以减轻患者疼痛,改善功能活动;激光疗法与运动治疗方式联合使用可能会提高治疗效果;(5)激光可能通过光生物效应或热力学效应影响细胞内的信号传导和细胞功能,为激光促进关节软骨再生提供了直接证据。

光生物疗法影响正畸牙根吸收的研究进展

牙根吸收是正畸治疗中最危险的并发症之一,轻度的牙根吸收可在停止加力后自行修复,而对于严重的牙根吸收尚无行之有效的应对手段。光生物疗法作为一种新的物理治疗手段,与传统方法相比,具有设备体积小、无创性、波长范围广、作用范围局限、生物安全性高等优点,其波长范围覆盖了线粒体吸收波长的范围。组织或细胞接受红光或近红外光照射后生物活性改变,上调抗炎相关因子表达,促进细胞三磷酸腺苷生成、加速局部血液微循环、促进软硬组织的修复,抑制或修复牙根吸收。光生物疗法的疗效取决于其波长、能量密度、功率密度、照射频率四个要素,遵循“Arndlt-Schulz”定律,即“双向剂量效应”,生物疗效具有参数相关性,因而难以确定最佳使用参数。但光生物疗法独特的优势,使其在正畸领域有着巨大的应用潜力。

人工智能辅助的太赫兹成像无标记检测识别方法研究

低强度激光治疗(Low-level Laser Therapy,LLLT)是一种可以提供局部治疗的新型无创光动力疗法。现有不同病症下光配方检测方法复杂而且对专业经验要求高,限制了LLLT的发展。为了检测急性肺损伤(Acute Lung Injury,ALI)的LLLT高效光配方,提出人工智能(Artificial Intelligence,AI)辅助的基于太赫兹(Terahertz,THz)成像的无标记识别方法。AI辅助的无标记THz成像可通过投票分类器自动识别。结果表明,AI辅助的THz成像自动识别方法对于不同光配方的LLLT其ALI的治疗效果识别率高达91.7%,可作为LLLT进一步开发和应用的新工具。

红光疗法在眼科疾病中的应用研究进展

红光是波长范围在620~760 nm的可见光,兼有良好的光化学和热作用,其穿透力较强,能够达到皮肤深层及组织内部,从而产生一系列的生物效应。在眼科领域,红光疗法最初主要应用于弱视和眼睑皮肤相关疾病的治疗,随着研究的进一步深入,红光逐渐被应用于控制近视进展和视网膜相关疾病。目前,重复低强度红光(repeat low-level red-light,RLRL)在近视进展的控制效果得到充分肯定,成为红光疗法在眼科应用最受关注的热点之一,其主要可能机制包括红光照射能激活线粒体中的细胞色素C氧化酶的活性,促进三磷酸腺苷(adenosine triphosphate,ATP)生成,改善网膜缺氧状况;促进一氧化氮(NO)的合成和释放,引起脉络膜血管的扩张及血流量的增加;诱导巩膜细胞外基质的重塑,增加巩膜的强度。此外,红光疗法可抑制视网膜感光细胞调节通路中的氧化应激、炎症和细胞凋亡,减轻眼表炎症反应和疼痛,有助于周围神经损伤后修复等。文章针对红光疗法在近视、视网膜相关疾病、弱视及眼睑皮肤相关疾病的治疗机制、有效性及安全性进行综述,为红光疗法在眼科领域的应用提供重要的参考价值和依据。

He-Ne激光血管内照射对脑梗死患者血液流变学和细胞凋亡的影响

目的探讨He-Ne激光血管内照射(ILLLI)对脑梗死患者疗效、血液流变学性质、淋巴细胞增殖、凋亡和染色体的影响。方法脑梗死患者70例随机分成对照组和治疗组,各35例。对照组采用常规药物治疗,治疗组在常规药物治疗的基础上加用He-Ne激光血管内照射治疗,比较两组疗效和治疗前后的血液流变学指标、细胞增殖指数(MI)、细胞周期动力学指数(CKI)、姐妹染色单体交换(SCE)频率及淋巴细胞凋亡频率。结果治疗组有效率88.6%,对照组有效率65.7%,差异有非常显著意义(P<0.05)。治疗组全血黏度(低切,高切)、毛细血管血浆黏度,血沉、血沉方程K值、红细胞聚集指数、红细胞刚性指数较治疗前明显下降,红细胞变形指数较治疗前增加,治疗前后差异有显著意义(P<0.05)。治疗组患者ILLLI后淋巴细胞增殖活性高于对照组(P<0.05),CKI与对照组相比差异无显著意义(P>0.05);两组间SCE频率差异无显著意义(P>0.05);治疗组脑梗死患者的淋巴细胞凋亡率明显高于对照组(P<0.001),也明显高于治疗前(P<0.001)。结论低强度He-Ne激光血管内照射能有效改善血液流变学性质,改善微循环,增加脑血流量,促进神经功能的恢复,显著提高脑梗死患者的疗效,并能提高脑梗死患者的淋巴细胞增殖活性;可诱导发生较高的淋巴细胞凋亡率,对细胞没有致突变性。

He-Ne激光血管内照射对家兔纤维蛋白溶解功能影响的实验研究

为探讨低强度Ｈｅ－Ｎｅ激光（６３２．８ｎｍ）血管内照射治疗缺血性心、脑血管病的机制，设计了形成颈动脉血栓的家兔模型，观测对此模型组进行三次低强度Ｈｅ－Ｎｅ激光耳静脉血管内照射（每天１次，平均剂量６７２．３Ｊ／ｃｍ２）前后，血浆中纤维蛋白溶解酶原（简称纤溶酶原）、纤溶酶原激活剂抑制物、组织型纤溶酶原激活剂活性与Ｄ－二聚体和纤维蛋白原含量的变化，并与对照组比较。结果表明：低强度Ｈｅ－Ｎｅ激光血管内照射对纤溶系统的激活与血液高凝状态的缓解有促进作用，可能是由于低强度Ｈｅ－Ｎｅ激光血管内照射循环血液。

激光血管内照射结合电针治疗血管性痴呆的疗效分析

目的 :探讨激光血管内照射结合电针治疗血管性痴呆 (VD)的作用。方法 :将93例VD患者按区组随机法分为激光合电针组、电针组和药物组 (氢化麦角碱 ,DHET)。检测治疗前后长谷川痴呆修改量表 (HDS)、社会活动功能调查(FAQ)、日常生活能力(ADL)、神经功能缺损及主要症状等的变化情况。结果 :激光合电针组及电针组有效率分别为70.97%、61.29% ,而药物组为22.58 %。结论 :激光合电针法可促进VD患者智能、社会活动功能及日常生活自理能力的康复 ,其近期疗效优于电针组和DHET。

弱He-Ne激光血管内照射治疗急性缺血性脑血管病疗效及机理探讨

本研究观察了１２０例颈内动脉系统急性缺血性脑血管疾病患者，按单双数随机分入激光综合治疗组（激光组）和常规药物治疗组（药物组）各６０例。均予静脉点滴通脉液５００ｍｌ，川芎嗪１００ｍｇ，每天一次，十天为一疗程，激光组同时予１ＬＬＬ１治疗，照射时间６０分钟，每天一次，十天为一疗程，光纤末端输出功率１．５－２．０ｍＷ，同时予３０例健康志愿者１ＬＬＬ１一次。所有受试者在治疗前后均进行血液流变学指标，纤溶系统指标和ＴＣＤ检测，并评定患者治疗５、１０天的疗效。研究结果证明，１ＬＬＬ１ＩＴ可以提高单一药物治疗的疗效，机制是改善血液流变学性能，改善微循环，增快脑血流速度，而且可能有激活纤溶系统功能的作用。所有接受１ＬＬＬＩＴ者均无明显的不良反应。本临床研究表明，１ＬＬＬＩＴ可作为缺血性脑血管病一项有效的安全的辅助治疗方法。