Aplicação clínica da laserterapia de baixa potência na atenção primária à saúde / Clinical praxis of low-level laser therapy in primary health care

LASER é um acrônimo que sumariza a amplificação da luz por emissão estimulada de radiação (eletromagnética). O Programa Saúde em Ação equipou diversas Unidades Básicas de Saúde com aparelhos de laser diodo. Cirurgiões Dentistas têm aplicado a laserterapia de baixa potência para acelerar a remissão de várias condições clínicas, sem necessidade de encaminhamento imediato para Atenção Secundária. O objetivo deste artigo é apresentar protocolos de laserterapia de baixa potência empregados por Cirurgiões Dentistas da Atenção Primária à Saúde de Campinas-SP, por meio da ilustração com casos clínicos atendidos em consultas de urgência. Aplicações para ulceração traumática e desordem temporomandibular foram realizadas em uma senhora de 60 anos de idade, que aguardava a substituição das próteses totais. Irradiou-se por laser vermelho (660nm) com energia de 1J as margens da ulceração. Após palpação da articulação e dos músculos mastigatórios para mapeamento, os pontos álgicos foram irradiados por laser infravermelho (808nm) com energia de 4J. Um homem de 50 anos de idade queixava-se de paralisia hemifacial havia 10 dias. A tentativa de recuperação do nervo facial ocorreu com irradiação por laser infravermelho com energia de 8J por ponto, em 22 pontos dos ramos do nervo facial. Em ambos os casos, a regressão do quadro clínico desconfortável foi observada. Os Profissionais do Sistema Único de Saúde (SUS) que são aptos ao uso dos equipamentos para laserterapia de baixa potência podem utilizar este recurso de modo seguro e bem sucedido, observando comprimento de onda do laser e doses protocolares para cada alteração a ser tratada.

LASER is an acronym which means light amplification by stimulated emission of radiation (electromagnetic). Many Primary Health Care Units received diode laser devices from the Brazilian Health in Action Program. Dental practitioners have applied low-level laser therapy for accelerating the resolution of several clinical problems, without the need to prompt referral for Secondary Attention. This manuscript aimed at presenting low-level laser therapy protocols, used by Dentists in Primary Health Care Units from Campinas-SP, illustrated with case reports of urgency consultations. Applications for traumatic ulcers and temporomandibular disorder were performed in a 60-year-old woman who was waiting for dental prosthesis replacement. Red laser irradiation (660nm) with 1J energy was delivered at the margins of the ulcer. Upon articular and masticatory muscles palpation for mapping, trigger points were irradiated with infrared laser (808nm), 4J energy. A 50-year-old man complained of hemifacial paresis for 10 days. The recovery attempt of the facial nerve was carried out by infrared laser irradiation with 8J energy per point in 22 points of the facial nerve branches. In both case reports, regression of the uncomfortable clinical problem was noted. Professionals from the Unified Health System (SUS) who are able to use a low-level laser device may safe and successfully operate this equipment, selecting the appropriate laser wavelength and protocol doses for managing each clinical problem.

Efeito da fotobiomodulação na reabilitação de pacientes com patologias traumato-ortopédicas: revisão integrativa / Efectos de la fotobiomodulación en la rehabilitación de pacientes con patologías traumatoortopédicas: revisión integrativa / Effects of photobiomodulationin the rehabilitation of patients with traumato-orthopedic pathologies: integrative review

Introdução: Fotobiomodulação corresponde à exposição de tecidos biológicos a baixos níveis de luz vermelha e infravermelha, esta terapia favorece a reabilitação de diferentes tecidos e que pode ser utilizada para a melhora da prática clínica nas diferentes atuações da fisioterapia, como por exemplo, no tratamento dos acometimentos musculoesqueléticos e inflamatórios. Objetivo: Identificar os benefícios da fotobiomodulação empregados na reabilitação de pacientes nas diferentes patologias traumato-ortopédicas. Metodologia:Trata-se de uma revisão integrativa com busca online nas plataformas de dados: Medline e PubMed. Os descritores foram: fotobiomodulação, taumato-ortopedia e reabilitação. As línguas selecionadas foram: Português, Inglês e Espanhol, entre os anos de 2018 a 2022.Resultados:A descrição dos achados nos ensaios clínicos analisados mostra que a terapia de fotobiomodulação apresenta diferentes usos na prática clínica e que seu uso produz efeito analgésico, anti-inflamatório e regenerativo nos distúrbios musculoesqueléticos. Conclusões:De acordo com a revisão dos artigos, pôde-se perceber que a terapia por fotobiomodulação confirma seus benefícios e eficácia, portando, se fazendo positiva na atuação traumato-ortopédica, gerando resultados significativos quando comparada a outros recursos (AU).

Introduction: Photobiomodulationcorresponds to the exposure of biological tissues to low levels of red and infrared light, this therapy favors the rehabilitation of different tissues and can be used to improve clinical practice in different actions of physiotherapy, such as, for example, in the treatment of musculoskeletal and inflammatory disorders. Objective: To identify the benefits of photobiomodulation used in the rehabilitation of patients with different traumato-orthopedic pathologies. Methodology:This is an integrative review with online search on data platforms: Medline and PubMed. The descriptors were: photobiomodulation, thaumato-orthopedics and rehabilitation. The selected languages were: Portuguese, English and Spanish, from 2018 to 2022. Results: The description of the discovers in the analyzed clinical trials shows that photobiomodulation therapy has different uses in clinical practice and that its use produces analgesic, anti-inflammatory and regenerative effects in musculoskeletal disorders. Conclusions:According to the review of the articles, it could be seen that photobiomodulation therapy confirms its benefits and effectiveness, therefore, becoming positive in the trauma-orthopedic performance, generating significant results when compared to other resources (AU).

Introducción: La fotobiomodulacióncorresponde a la exposición de tejidos biológicos a bajos niveles de luz roja e infrarroja, esta terapia estimula la rehabilitación de diferentes tejidos y puede ser utilizada para mejorar la práctica clínica en diferentes áreas de fisioterapia, como por ejemplo, en tratamiento de Trastornos musculoesqueléticos e inflamatorios. Objetivo: Identificar los beneficios de la fotobiomodulación utilizada en la rehabilitación de pacientes con diferentes patologías traumato-ortopédicas. Metodología: Esta es una revisión integradora con búsqueda en línea en plataformas de datos: Medline y PubMed. Los descriptores fueron: fotobiomodulación, taumato-ortopedia y rehabilitación. Los idiomas seleccionados fueron: portugués, inglés y español, entre los años 2018 a 2022. Resultados: La descripción de los hallazgos en los ensayos clínicos analizados muestra que la terapia de fotobiomodulación tiene diferentes usos en la práctica clínica y que su uso produce efectos analgésicos, antiinflamatorios y regenerador en trastornos musculoesqueléticos. Conclusiones: De acuerdo con la revisión de los artículos, se pudo apreciar que la terapia de fotobiomodulación confirma sus beneficios y efectividad, por lo tanto, tornándose positiva en el desempeño trauma-ortopédico, generando resultados significativos cuando se compara con otros recursos (AU).

Dosimetria do laser de baixa intensidade para cicatrização de úlcera venosa: um protocolo de revisão sistemática / Low-level laser dosimetry for venous ulcer healing: a protocol for systematic review

OBJETIVO: Analisar a dosimetria do laser de baixa intensidade no processo de cicatrização de úlcera venosa. MÉTODO: Trata-se de um protocolo de revisão sistemática registrado no International Prospective Register of Systematic Reviews (PROSPERO) sob código de registro CRD420211256286. Serão realizadas buscas por evidências científicas em 11 bases de dados, utilizando os idiomas português, inglês e espanhol. A exportação das publicações seguirá as etapas de identificação e seleção dos estudos, e extração dos dados. As divergências serão resolvidas por consenso dos dois revisores, e caso persistam, um terceiro revisor será consultado para decidir sobre a inclusão do material. A ferramenta Risk of Bias 2 (RoB 2) será utilizada para avaliar o risco de viés dos estudos dos ensaios clínicos randomizados, ao passo que a ferramenta Risk of Bias in Non-randomized Studies of Interventions (ROBINS-I) será utilizada para avaliar o risco de viés dos ensaios clínicos não randomizados. A análise crítica dos materiais selecionados quanto à dosimetria do laser de baixa intensidade para cicatrização de úlcera venosa resultará em uma síntese narrativa, sem metanálise.

OBJECTIVE: To analyze the dosimetry of low-level laser therapy in the healing process of venous ulcers. METHOD: This is a protocol for systematic review registered in the International Prospective Register of Systematic Reviews under registry code CRD420211256286. Articles will be searched in 11 databases using Portuguese, English, and Spanish languages. The export of publications will follow the steps of study identification, selection, and data extraction. Disagreements will be resolved by consensus among reviewers; if they persist, a third reviewer will be consulted to decide whether to include the material. The Risk of Bias 2 (RoB 2) tool will be used to assess the validity of randomized clinical trials, while the Risk of Bias in Non-randomized Studies of Interventions (ROBINS-I) tool will be used to assess the risk of bias in non-randomized clinical trials. The critical analysis of selected materials on dosimetry of low-level laser therapy for venous ulcer healing will result in a narrative synthesis without meta-analysis.

Bioactive Determination of Anfibatide / 医药导报

Objective To screen and establish a method for determining the biological activity of anfibatide.Meth-ods Three methods of light transmittance aggregometry(LTA),whole blood electrical impedance aggregometry,and continuous platelet count method were compared and studied.And the constant platelet counting method was chosen and verified to detect the biological activity of anfibatide.Results The RSD values of anfibatide biological activity detected by LTA,whole blood electri-cal impedance aggregometry,and continuous platelet count method were 10.3%,14.0%,and 3.6%,respectively.RSD of repeat-ability of 6 parallel test articles was 11.0%.The RSD of intermediate precision of 12 test articles for different personnel was 9.8%,and the inhibition rate of anfibatide was linear in the range of 0.3-0.5 U.The correlation coefficient was more than 0.990.The ac-tivity of three batches of anfibatide was determined,and the inhibition rate was 49.9%～53.6%.Conclusion The continuous platelet count method for determining anfibatide activity was established and verified,which can be used for quality control for an-fibatide activity since the precision and detection limit of the method met the requirement for activity assay of biological products.

Terminal tracer equipment based on active light source array for surgical robot / 中国医学物理学杂志

A non-bracket terminal tracer equipment with multi-angle active light source array is developed to reduce the effects of view obstruction on robot navigation.The multiple-angle light source array is established using a large prism and a small prism,and then the positions of the mechanical arm and the tool center point are calculated via the cooperation of binocular cameras.A simple model built with COMSOL software is used to verify the signal coverage of the tracer equipment.The experiments conducted for signal coverage and static positioning demonstrate its effectiveness and stability,suggesting that the tracer equipment can meet the task requirements of the surgical robot.

Application of rigid endoscope detector in testing optical performance of rigid endoscopes / 中国医学装备

Objective:To test the performances of conducting light and imaging of rigid endoscopes by applying detection method with detector and visual detection method,and to explore the application effect of rigid endoscope detector in testing the optical performance of rigid endoscope.Methods:A total of 174 rigid endoscopes that were used in surgery with bladder endoscopy at Cancer Hospital of Beijing Union Medical College from May 2022 to May 2023 were selected.The visual detection method and detection method with detector were adopted respectively to perform detection after cleaning and disinfection for 174 rigid endoscopes.According to different detection methods,the 174 rigid endoscopes were divided into visual detection group(90 pieces)and detector group(84 pieces).The performances of conducting light and imaging of the two kinds of detection methods were compared and analyzed,and the results of the two kinds of detection methods were compared.Results:In the testing of the light guiding performance of rigid endoscopes,the detection rates of unqualified items in the detector group and the visual group are 11.9%(10/84),0(0/90),respectively,the difference in luminous flux between the two groups was statistically significant(x2=9.276,P<0.05);in the imaging quality testing of rigid endoscope imaging performance,the detection rates of unqualified images in the detector group and the visual group are 9.5%(8/84),1.11%(1/90),respectively.The difference between the two groups is statistically significant(x2=6.269,P<0.05).Conclusion:The application of rigid endoscope detector can increase the accuracy of CSSD staff in detecting the optical performance of rigid endoscope,and improve the management of quality control of rigid endoscope,and reduce the loss rate of rigid endoscopes,and extend the service life of rigid endoscopes,and provide safer and more effectively medical devices for clinical work,and ensure medical safety.

Effects of Shengxue Tongbian Granules on Colonic Myoelectric and Ca2+/CaM/MLCK Signaling Pathway in Rats with Slow Transit Constipation of Blood-deficiency and Intestinal Dryness Syndrome / 中国中医药信息杂志

Objective To observe the effects of Shengxue Tongbian Granules on colonic myoelectricity and Ca2+/CaM/MLCK signaling pathway in rats with slow transit constipation(STC)of blood deficiency and intestinal dryness syndrome;To explore its mechanism for the treatment of STC.Methods The STC model of blood deficiency and intestinal dryness syndrome was established by intragastric administration of loperamide combined with tail bloodletting.The rats were divided into control group,model group,mosapride citrate group and Shengxue Tongbian Granules group,with 8 rats in each group.The administration group was given corresponding drugs by gavage for 14 days.The general condition of rats before and after treatment was observed,the fecal water content was detected,the slow wave frequency,amplitude,and coefficient of variation of colonic electromyography were detected using a biological function experimental system,and intestinal propulsion rate was detected.HE staining was used to observe the pathological changes of colon tissue,the concentration of Ca2+ in colonic smooth muscle cells was detected by colorimetry,the expression of Cx43,calmodulin(CaM),myosin light chain kinase(MLCK)and p-MLC20 in smooth muscle tissue were detected by Western blot.Results Compared with the control group,the body mass,fecal water content and intestinal propulsion rate of rats in the model group decreased(P<0.01),the slow wave frequency of colonic electromyography slowed down,the coefficient of variation of frequency increased(P<0.01),and the amplitude and coefficient of variation of slow wave increased(P<0.01);colonic mucosal structure was damaged,with visible inflammatory changes and significant erosion,and the concentration of Ca2+ and the expressions of Cx43,CaM,MLCK,p-MLC20 proteins in colonic smooth muscle cells were significantly decreased(P<0.01).Compared with the model group,the body mass,fecal water content and intestinal propulsion rate of the rats in the mosapride citrate group and the Shengxue Tongbian Granules group significantly increased(P<0.05,P<0.01),the slow wave frequency of colonic electromyography increased and the coefficient of variation of frequency decreased(P<0.01),and the slow wave amplitude and amplitude variation coefficient decreased(P<0.05,P<0.01);the colonic mucosal structure was relatively intact,the erosion situation was improved,and the Ca2+ concentration,Cx43,CaM,MLCK and p-MLC20 protein expressions in colonic smooth muscle cells significantly increased(P<0.01).Conclusion Shengxue Tongbian Granules can improve defecation symptoms and promote colonic motility in STC rats with blood deficiency and intestinal dryness syndrome,which may be related to regulating colonic myoelectric rhythm and activating Ca2+/CaM/MLCK signaling pathway.

Effect of 1 064 nm picosecond laser combined with intense pulsed light in treatment of melisma / 中华医学美学美容杂志

Objective:To investigate the clinical efficacy of a 1 064 nm picosecond laser combined with intense pulsed light in the treatment of melasma.Methods:From May to August 2022, ninety-two female patients with melasma were admitted to the Medical Cosmetology Center, Xi′an International Medical Center Hospital, aged 25-50 years, with an average age of (35.0±3.5) years. The were divided by random number table method. Forty-six cases were divided into laser combined group, which were treated with precise intense pulsed light combined with a 1 064 nm picosecond laser. Forty-six cases in the laser group were treated with a 1 064 nm picosecond laser. The area and severity score of melasma (MASI), VISIA score and clinical efficacy were evaluated.Results:The MASI scores of laser combined group were 12.58 (11.04, 13.99) before treatment, and the MASI scores of laser group were 13.16 (11.47, 14.14) before treatment. The MASI scores of laser combined group were 5.75 (3.79, 7.19), and the MASI scores of laser group were 7.15 (5.42, 5.85) after treatment. The MASI scores of the two groups were decreased compared with those before treatment, and the MASI score of the laser combined group was lower than that of the laser group. The difference was statistically significant ( Z=-4.05, P<0.01). The median VISIA scores of the laser combined group were (173.72±43.77), and the median VISIA scores of the laser group were (175.65±34.9) before treatment. The median VISIA scores of the laser combined group were (135.46±41.63), and the median VISIA scores ofthe laser group were (145.26±33.33) after treatment. The VISIA scores of the two groups were decreased compared with those before treatment. The scores of the laser combined group were lower than those of the laser group. The difference was statistically significant ( t=-2.52, P<0.05). The effective rate of the laser combined group (80.43%, 37/46) was higher than that of the laser group (69.56%, 22/46, P<0.05). Conclusions:The curative effect of 1 064 nm picosecond laser combined with precise intense pulsed light in the treatment of melasma is better than that of a 1 064 nm picosecond laser alone.

Efficacy of intense pulsed light in treatment of rosacea: a Meta analysis / 中华医学美学美容杂志

Objective:To evaluate the therapeutic effect of intense pulsed light on rosacea.Methods:From December 2022 to April 2023, the Dermatology Department of the Affiliated Hospital of Shaanxi University of Chinese Medicine searched PubMed, Embase, Cochrane Library, CNKI, Wanfang, VIP, CBM and other Chinese and English databases to collect clinical randomized controlled studies on intense pulsed light treatment of rosacea for ameta-analysis.Results:A total of 559 patients were included in 6 randomized controlled trials. The efficacy of the combination of strong pulsed light and medication in the treatment of rosacea was significantly better than that of medication alone ( Z=6.15, P<0.001). After subgroup analysis, the combination of strong pulsed light and tetracycline drugs was more effective in treating rosacea than using tetracycline drugs alone ( Z=3.17, P<0.05). The efficacy of the combination of strong pulsed light and minocycline in the treatment of rosacea was better than that of minocycline alone ( Z=2.37, P<0.05), and clinical evaluation showed the improvements of erythema, papules, and pustules. The differences in scores for itching and capillary dilation were statistically significant ( P<0.05). Conclusions:The efficacy of intense pulsed light therapy for rosacea is definite, and its combination with topical or oral medication is superior to that of medication alone. However, the stability of the effect needs to be confirmed by more high-quality randomized controlled trials.

Effect of intense pulsed light on hair removal in pediatric auricular reconstruction using tissue expander / 中华医学美学美容杂志

Objective:To investigate the safety and efficiency of depilation with intense pulsed light (IPL) in congenital microtia patients during different phase of reconstruction treatment sessions.Methods:The hairy skin was treated with the M22TM system (Lumenis, German) using a filter of 695-1 200 mm. A three pluses mode of the radiant setting with a pulse width of 3.5 ms, a delay of 60 ms, and an energy density of 16-18 mJ/cm 2 was applied in the expanded patients. Depilation efficacy was evaluated as follows: excellent (hair density reduction >75%), good (50%-75%), fair (25%-50%), and poor (<25%). The depilation effect was compared between different phases. And the adverse effect was observed. Results:A total of 131 cases were included. There was no difference of the hair density reduction between patients with different expander volume after same IPL depilation treatments [15 (13-19) vs. 16 (15-19) root/cm 2, Wilcoxon rank analysis]. The hair density reduction in the expansion group was lower than the non-expansion group after two IPL depilation treatments [15 (13-19) vs. 17 (15-21) root/cm 2, P<0.05, Wilcoxon rank analysis]. The depilation efficacy was highly related with the numbers of IPL depilation treatments the patients received [Kendall′ stat b=0.74 (95% CI: 0.71-0.77), P<0.05]. There were 3 cases of folliculitis, 2 cases of blisters occurred in this study, and no expander exposure and cartilage absorption were observed. Conclusions:Hair removal with IPL is a safe and effective photo-epilation method during all stages of ear reconstruction using tissue expander. The volume of the expander does not significantly affect the hair removal efficiency. Depilation in the expansion phase is more efficient than that in the non-expansion phase, and the ideal result of " hair-free" or " less hairy" reconstructed ears can be achieved in 5 treatments, with suboptimal results in 3 treatments.

Treatment of Polymorphic Light Eruption Using Resolving Toxins and Tranquilizing Collaterals Method / 中医杂志

Collateral vessels in cutaneous regions are the channel of qi， blood and body fluids transmission among the skin and striae and interstices， and is also the path of pathogens invasion. It is believed that the key pathogenesis of polymorphic light eruption （PLE） was toxins damaging to the skin， in which the cutaneous collaterals fail to nourish， insecurity of the muscle surface as the basis of disease， the pathogens offending qi collaterals and heat constraint to toxins as the driving factors， gradually affecting fluid collaterals and dryness-dampness coexist as the middle link， and latent pathogens in blood level and waiting for the opportunity to onset as the final stage. It is proposed that the basic treatment is to resolve toxins and tranquilize collaterals， and the internal and external treatments are combined together. The internal treatment is to resolve toxins， strengthen collaterals， and assist in unblocking the collaterals， and the modified self-prescribed Wuteng Decoction （五藤饮） plus Yigong Powder （异功散） were selected as the basic formulas， which promotes the discharge of toxin pathogens and strengthens the power of the cutaneous collaterals to protect against pathogens. For external treatment， according to the performance of skin lesions， scraping， tapping with medicinal solution， ointment were selected to drive away pathogens and resolve toxins， and soothe the cutaneous collaterals. In the early stage， the skin temperature rose with itching， tingling and no rash， scraping with the self-prescribed Yinhuangcao Clearing Oil （银黄草清解油） could be used to activate blood and regulate qi， relieve heat and resolve toxins； if the lesions showed erythema， pimples， itching， tapping with the self-prescribed Qian'ai Xunxi Formula （千艾熏洗方） could be used to diffuse qi and fluid， unblock the collaterals and clean toxins； if the skin lesions thickened with scales， the self-prescribed Yufu Ointment （愈肤膏） for external application could be used to resolve toxins and activate collaterals， moisten skin and heal up sore.

Review and Progress in the Treatment of Renal Light Chain Amyloidosis / 罕见病研究

Renal light chain amyloidosis (AL amyloidosis) had poor prognosis before the 21st century. However, the treatment of AL amyloidosis has made great progress in the last decade. We reviewed traditional treatments of AL amyloidosis such as alkylating agents, proteasome inhibitors, and recent advances such as monoclonal antibodies. Bortezomib improved the hematological response and survival effectively of the patients, and the combination of Daratumumab brings faster and deeper hematological response, increasing the response rate of target organs such as the kidneys and heart. The renal response was significant higher in the patients with the therapy of Daratumumab, part of them could achieve very good partial response or better renal response. Autologous hematopoietic stem cell transplantation(auto-HSCT)improves hematological as well as organ response, and could be the first choice among eligible patients. Kidney transplantation is a feasible option for those with good hematological response.

Research status of premyopia / 国际眼科杂志(Guoji Yanke Zazhi)

The visual impairment and blindness caused by myopia have become a global burden, and the World Health Organization has included the prevention and control of myopia in the global program for preventing blindness. In China, the development of myopia is showing a trend with higher incidence, younger age, and higher refractive errors. Moving forward the port of prevention and control myopia has become an important strategy to address the current predicament. Premyopia refers to the stage in children where the refractive power is ≤+0.75 D and &#x003E;-0.50 D, and there are multiple risk factors during this stage that can potentially lead to myopia. Currently, the incidence of premyopia and its transformation into myopia is high, and the key prevention and control measures include building a predictive model for the transformation of premyopia into myopia, emphasizing the reduction of exposure to risk factors, using low-concentration atropine eye drops, red light therapy, and optical defocus intervention. This article provides a comprehensive review of the current situation regarding the incidence of premyopia and its transformation into myopia, as well as the research progress on existing prevention and control measures, with the aim of providing relevant references for the prevention and control of myopia during the premyopia stage.

Effects of light regulation on the synthesis of secondary metabolites in medicinal plants / 药学实践与服务

Secondary metabolites of medicinal plants are extremely important to human health because of their special pharmacological activities or efficacy. They are the main source of drugs, health care products, and cosmetics. As human beings continue to pursue health and longevity, the demand in the pharmaceutical market continues to grow. It becomes especially important to improve the production and quality of secondary metabolites of medicinal plants. Plant secondary metabolites are a kind of adaptation of plants to their environment and are the result of the interaction between plants and biotic and abiotic factors during the long-term evolution process. The production and accumulation of secondary metabolites in medicinal plants are mainly affected by plant genetic factors and environmental factors. Among them, light environment is extremely important for their synthesis. Therefore, light regulation has long been a research focus for many scholars in China and abroad. In this article, we the recent research progress on the effects of light regulation on the secondary metabolites of medicinal plants were reviewed, mainly focusing on the effects of light quality, light intensity and photoperiod, in order to provide theoretical basis and practical guidance for the efficient production of secondary metabolites with important pharmacological activities.

Follow up study of the association between bedroom light at night exposure and body mass index in children / 中国学校卫生

Objective@#To explore the association between bedroom light at night (LAN) exposure and body mass index (BMI) in children at 1 year follow up, so as to provide new strategies for obesity prevention.@*Methods@#From December 2021 to May 2022, cluster random sampling was conducted, involving 648 children from two primary schools in Tianchang, Chuzhou City, Anhui Province, China, to assess bedroom LAN exposure of children during sleep. A questionnaire survey and physical examination were carried out in May 2022. Multivariate linear regression was performed to analyze the correlation between bedroom LAN exposure and BMI variable quantity at 1 year follow up (May, 2023).@*Results@#The median intensity of bedroom LAN exposure during the sleep episode was [1.11(0.35,3.24)lx] in children. The proportion of the sample exposed to an average light intensity of ≥3 lx was 27.5%, while 19.0% was exposed to a LAN intensity of ≥5 lx during the sleep episode. In the multivariable linear regression, after adjusting for covariates, including sex, baseline age, sleep duration, family monthly income, and maternal education level, exposure to a 1 h-average post bedtime LAN intensity of ≥3 lx ( β=0.25, 95%CI =0.05-0.44) and LAN≥5 lx ( β=0.34, 95% CI = 0.12-0.55) was associated with a gain of 0.25 and 0.34 kg/m 2, respectively, in the children s BMI at the 1 year follow up ( P < 0.05).@*Conclusions@#A positive correlation was found between bedroom LAN exposure and BMI variable quantity at 1 year follow up in children. Thus, reduced bedroom LAN exposure might be useful for interventions aimed at obesity prevention.

Development and Application of a Micro-device for Rapid Detection of Ammonia Nitrogen in Environmental Water / 分析化学

The analysis of ammonia nitrogen in real water samples is challenging due to matrix interferences and difficulties for rapid on-site analysis.On the basis of the standard method,i.e.water quality-determination of ammonia nitrogen-salicylic acid spectrophotometry(HJ 536-2009),a simple device for online detecting ammonia nitrogen was developed using a sequential injection analysis(SIA)system in this work.The ammonia nitrogen transformation system,color reaction system,and detection system were built in compatible with the SIA system,respectively.In particular,the detection system was assembled by employing light-emitting diode as the light source,photodiode as the detector,and polyvinylchloride tube as the cuvette,thus significantly reducing the volume,energy consumption and fabricating cost of the detection system.As a result,the accurate analysis of ammonia nitrogen in complex water samples was achieved.A quantitative detection of ammonia nitrogen in water sample was obtained in 12 min,along with linear range extending to 1000 μmol/L,precisions(Relative standard deviation,RSD)of 4.3%(C=10 μmol/L,n=7)and 4.2%(C=500 μmol/L,n=7),and limit of detection(LOD)of 0.65 μmol/L(S/N=3,n=7).The results of interfering experiments showed that the detection of ammonia nitrogen by the developed device was not interfered by the common coexisting ions and components,therefore the environmental water could be directly analyzed,such as reservoir water,domestic sewage,sea water and leachate of waste landfill.The analytical results were consistent with those obtained by the environmental protection standard method(Water quality determination of ammonia nitrogen-salicylic acid spectrophotometry,HJ 536-2009).In addition,the spiking recoveries were in the range of 92.3%-98.1%,further confirming the accuracy and practicality of the developed device.

Effect of saikosaponin A regulating MLCK/MLC2 signaling pathway on intestinal injury in SAP rats / 国际检验医学杂志

Objective To investigate the effect of saikosaponin A regulating myosin light chain kinase(MLCK)/myosin light chain 2(MLC2)signaling pathway on intestinal injury in rats with severe acute pan-creatitis(SAP).Methods A total of 10 rats were randomly selected as sham operation group,and the other rats were injected with sodium taurine cholate solution to construct SAP rat model.SAP rat models were ran-domly divided into SAP group,saikosaponin A group(10.0 mg/kg intraperitoneal injection of saikosaponin A)and iE-DAP group(3.5 mg/kg intraperitoneal injection of MLCK/MLC2 pathway activator iE-DAP),sai-kosaponin A+iE-DAP group(intraperitoneally injected with 10.0 mg/kg saikosaponin A+3.5 mg/kg iE-DAP),10 rats in each group were injected once a day for 1 week,sham operation group and SAP group were injected with the same amount of normal saline.The serum levels of amylase(AMY),lipase(LIP),diamine oxidase(DAO),interleukin(IL)-1β,IL-6 and tumor necrosis factor-α(TNF-α)were detected by enzyme-linked immunosorbent assay(ELISA).HE staining was used to detect the pathological morphology of ileum tis-sue in each group.The levels of oxidative stress indexes in ileum tissue were detected by ELISA.Intestinal barrier re-lated proteins and MLCK/MLC2 pathway related proteins were detected by western blot.Results Compared with SAP group,the levels of AMY,LIP,DAO,IL-1β,IL-6 and TNF-α in saikosonin A group were significantly de-creased,while the levels of AMY,LIP,DAO,IL-1β,IL-6 and TNF-α in iE-DAP group were significantly in-creased,with statistical significance(P＜0.05).Compared with SAP group,the structure of ileum tissue was improved and the pathological score of ileum tissue was significantly decreased in SA group(P＜0.05).Com-pared with SAP group,the levels of glutathione and superoxide dismutase in SA group were significantly in-creased,and the levels of malondialdehyde were significantly decreased in SA group,with statistical signifi-cance(P＜0.05).Compared with SAP group,the protein levels of MLCK,p-MLC2/MLC2 in SA group were significantly decreased,and the difference was statistically significant(P＜0.05).Conclusion Saikosaponin A may improve intestinal injury in SAP rats by down-regulating the MLCK/MLC2 signaling pathway.

Study on the Treatment of Dampness Stagnated in the Triple Energizer Based on the Theory of"Qi Transformation Leading to the Removal of Pathogenic Dampness" / 广州中医药大学学报

The statement of"qi transformation leading to the removal of pathogenic dampness"was recorded in Wen Bing Tiao Bian(Analysis on Epidemic Febrile Diseases)written by the Qing Dynasty physician WU Ju-Tong.Dampness in the triple energizer is caused by the dysfunction of qi transformation,and the treatment of dampness must be based on the activation of qi movement and focused on the promotion of qi movement and the restoration of the qi transformation in the triple energizer.For the treatment of dampness attack in the upper energizer,therapies of dispersing lung to smooth qi and resolving dampness to relieve the obstruction are recommended.For the treatment of dampness obstruction in the middle energizer,therapy of activating spleen qi by strengthening spleen and moving qi is stressed for helping the removal of dampness and for the eradication of the source of dampness.For the treatment of dampness stagnation in the lower energizer,therapy of draining dampness with sweet-light medicines and activating yang can be used according to the illness status.The three methods of treating dampness,namely dispersing the upper energizer,activating the middle energizer and draining the lower energizer,all embody the mechanism of"qi transformation leading to the removal of pathogenic dampness",and the therapies of dispersing lung with light medicines,inducing perspiration by opening striated layer,eliminating dampness with aromatics and draining dampness with sweet-light medicines should be used in accordance with the syndromes.The elucidation of the academic thoughts of"qi transformation leading to the removal of pathogenic dampness"can provide theoretical reference for the fundamental research of dampness syndrome and clinical application of therapies for resolving dampness in Chinese medicine.

Research progress of bright light therapy in the treatment of sleep disorders related to Parkinson's disease / 临床神经病学杂志

Sleep disturbance is a common non-motor symptom of Parkinson's disease(PD),which seriously affects the quality of patients'life.Bright light therapy is a treatment that uses daylight or artificial light to regulate circadian rhythms.Recent studies have shown that bright light therapy may have effect on PD-related sleep disorders,but the mechanism is still unclear.Due to the influence of many factors,there is no unified standard to guide the application of bright light therapy.Based on this,this article reviews the mechanism and application of bright light therapy in the treatment of PD-related sleep disorders.

Progress in physical therapy for sleep disorders in children and adolescents / 中华实用儿科临床杂志

Sleep disorders are common in children and adolescents, especially in those with neurodevelopmental and mental disorders, but treatment strategies remain limited.The main therapeutic methods for sleep disorders in children and adolescents include cognitive behavioral therapy, surgical therapy, drug therapy, and physical therapy.Conventional cognitive behavioral therapy is expensive; plus, the number of qualified sleep physicians and therapists is limited, and patient′s compliance is low.Drug therapy is the most commonly used treatment for insomnia in children and adolescents, but it lacks evidence-based indications and safety and has many adverse reactions, and its long-term efficacy is unknown.Physical therapy that changes the activity of central and peripheral nerves through physical stimulation such as magnetism, electricity, sound and light can provide valuable alternative or complementary treatment for individuals with sleep disorders who can′t get conventional treatment, have poor tolerance or are ineffective.In this paper, 4 common clinical physical therapies (transcranial magnetic stimulation, transcranial direct current stimulation, light therapy, and hyperbaric oxygen therapy) and their application in treating sleep disorders in children and adolescents are reviewed, providing scientific basis and new ideas for the future clinical treatment of sleep disorders in children and adolescents.