Uso do laser de baixa potência para o tratamento de parestesia: uma revisão de literatura / Use of low-level laser to treat paresthesia: a literature review

Introdução: A parestesia é uma neuropatia que afeta a função sensorial. O Laser de Baixa Potência (LBP), por sua vez, apresenta propriedades analgésicas, bioestimuladoras e reparadoras. Objetivo: Realizar um levantamento na literatura científica sobre os aspectos gerais e benefícios do LBP no manejo terapêutico da parestesia, além de identificar a classificação e métodos de obtenção do diagnóstico desta condição. Materiais e Métodos: Tratou-se de uma revisão narrativa da literatura através da busca nas plataformas PubMed, SciELO, LILACS e Google Schoolar. Após o cruzamento dos descritores com os operadores booleanos e aplicação dos critérios de inclusão/exclusão, 26 estudos foram incluídos. Resultados: A parestesia pode ser classificada em neuropraxia, axonotmese e neurotmese, subdivididas em Grau I ao V. Seu diagnóstico pode ser executado através de testes subjetivos e objetivos. O LBP compreende em um dispositivo tecnológico com efeitos analgésico, anti-inflamatório e fotobiomodulador, que estimula o reparo neural. Os estudos mostram que a dosimetria nos comprimentos de onda vermelho e infravermelho, aplicação intra e extra oral, e com mais de uma sessão semanal exerce efeito modulatório positivo do reparo neural, com retorno progressivo da atividade sensitiva. Além disso, os estudos trazem uma ampla variação no número de pontos de aplicação, bem como no tempo de irradiação e quantidade de sessões, em virtude da extensão e tempo de diagnóstico da parestesia. Considerações finais: Apesar da alta complexidade da parestesia, o LBP exerce efeitos benéficos através do retorno da sensibilidade parcial ou total, além de ser um dispositivo bem tolerado pelo organismo e minimamente invasivo.

Introduction: Paresthesia is a neuropathy that affects sensory function. The Low-Level Laser (LLL), in turn, has analgesic, biostimulating and reparative properties. Purpose: Carry out a survey at the scientific literature on the general aspects and benefits of LLL in the therapeutic management of paresthesia in addition to identifying the classification and methods for obtaining a diagnosis of this condition. Materials and Methods: It was a narrative literature review through search in platforms PubMed, SciELO, LILACS and Google Schoolar. After crossing the descriptors with boolean operators and applying the inclusion/exclusion criteria, 26 articles were included in this study. Results: Paresthesia can be classified into neuropraxia, axonotmesis and neurotmesis, subdivided into Grades I to V. Its diagnostic can be carried out through subjective and objective tests. The LLL consists in a technological device with analgesic, anti-inflammatory and photobiomodulatory effects, which stimulates neural repair. Studies show that LLL in dosimetry at red and infrared wavelengths with intra and extra oral application and with more than one-week use exerts a positive modulatory effect on neural repair, with a progressive return of sensory activity. Furthermore, the studies show a wide variation in the number of application points, as well as the irradiation time and number of sessions, due to the extent and time of diagnosis of paresthesia. Final Considerations: Despite the high complexity of paresthesia, the LLL has beneficial effects through the return of partial or total sensitivity in addition being a device well tolerated by the body and minimally invasive.

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).

Reporte de un caso de amiloidosis sistémica al en un varón de 65 años con diarrea crónica y hemolacria / Report of case of systemic al amyloidosis in a 65-year-old man with chronic diarrhea and hemolacria

RESUMEN Se describe el caso de un varón de 65 años con diarrea crónica, equimosis palpebral y hemolacria. Se realizaron estudios de laboratorio, biopsia y análisis inmunohistoquímico para confirmar el diagnóstico. La variable dependiente fue el diagnóstico confirmado de amiloidosis AL, mientras que las variables independientes incluyeron los síntomas clínicos y los resultados de las pruebas diagnósticas. Se emplearon técnicas descriptivas para analizar los datos clínicos y de laboratorio. El paciente presentó diarrea crónica sin respuesta al tratamiento convencional, equimosis palpebral y hemolacria. Los estudios diagnósticos revelaron depósitos de amiloide en los tejidos. El análisis inmunohistoquímico confirmó amiloidosis sistémica de cadenas ligeras tipo AL. Se inició tratamiento específico, mejorando parcialmente los síntomas y estabilizando la condición del paciente. La amiloidosis sistémica de tipo AL requiere un alto índice de sospecha clínica para su diagnóstico oportuno. La combinación de estudios diagnósticos y tratamiento precoz puede mejorar el pronóstico de estos pacientes.

ABSTRACT The case of a 65-year-old male with chronic diarrhea, periorbital ecchymosis, and hemolacria is described. Laboratory studies, biopsy, and immunohistochemical analysis were performed to confirm the diagnosis. The dependent variable was the confirmed diagnosis of AL amyloidosis, while the independent variables included clinical symptoms and diagnostic test results. Descriptive techniques were used to analyze the clinical and laboratory data. The patient presented with chronic diarrhea unresponsive to conventional treatment, periorbital ecchymosis, and hemolacria. Diagnostic studies revealed amyloid deposits in the tissues. Immunohistochemical analysis confirmed systemic light chain AL amyloidosis. Specific treatment was initiated, partially improving the symptoms and stabilizing the patient's condition. Systemic AL amyloidosis requires a high index of clinical suspicion for timely diagnosis. The combination of diagnostic studies and early treatment can improve the prognosis of these patients.

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.

Establishment and verification of a real-time quantitative PCR method for determination of exogenous antibody gene copy number in CHO cells / 中国生物制品学杂志

@#Objective To establish a real-time quantitative PCR method using SYBR GreenⅠto detect the copy numbers of light chain(LC)and heavy chain(HC)of exogenous antibody gene in CHO cells,and verify and preliminarily apply this method.Methods With the B2m(β2-microglobulin)expressed stably in CHO cells as the internal reference gene,suitable primers of LC,HC genes and internal reference gene were designed respectively,and the reaction system and program of the real-time quantitative PCR method were determined. The established method was verified for the specificity,linearity,precision and durability,and used to detect the copy numbers of LC and HC genes in the recombinant cell lines of working cell bank(WCB)and cells of different passages.Results The primers of exogenous genes and internal reference gene showed specific binding to the target fragments;The efficiency of primer amplification for the B2m gene,LC gene,and HC gene was 106. 7%,106. 3% and 99. 1%,respectively,and the correlation coefficients of the linear equations were all greater than 0. 99 with a good linear relationship;The relative standard deviations(RSDs)of precision verification were all less than 1%;Few cycles of freeze-thaw in a short period had little effect on the detection results. The copy numbers of LC and HC genes in different generations of recombinant cell lines detected by the established method showed no obvious changes.Conclusion A real-time quantitative PCR method for the determination of the copy number of exogenous genes in CHO cells was successfully established with good specificity,linearity,precision and durability,which provides a reference for detecting the copy number of exogenous genes expressed in other CHO cell lines

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.

Screening and mechanism of the best treatment of red light and silver ion dressing for treatment of chronic non-healing wounds / 中国组织工程研究

BACKGROUND:Red light irradiation and silver ion dressing are mostly used to treat chronic difficult healing wounds clinically,but the optimal irradiation time of red light irradiation and silver ion dressing for chronic non-healing wounds,and the combination of different silver ion dressings have not been determined. OBJECTIVE:To investigate the optimal irradiation time and dressing combination of red light and silver ion dressing in the therapy of chronic non-healing wounds. METHODS:The chronic non-healing wound model was made by applying Staphylococcus aureus on the whole skin defect and subcutaneous hydrocortisone injection in SD rats.72 rat models were randomly divided into 4 groups with 18 rats in each group by random number table method.The rats were treated on the basis of standard dressing change and the following therapy:A1B1 group(red irradiation 20 minutes + lipid hydrocolloidal silver sulfate dressing),A1B2 group(red light irradiation 20 minutes + calcium alginate fiber dressing),A2B1 group(red light irradiation 30 minutes + lipid hydrocolloidal silver sulfate dressing),and A2B2 group(red light irradiation 30 minutes + calcium alginate fiber dressing);change dressing,irradiate once,and change dressing every 24 hours.After 14 days of continuous treatment,wound healing rate,bacterial colony number,inflammatory response,histomorphology and angiogenesis were detected in each group. RESULTS AND CONCLUSION:(1)With the extension of treatment time,the wound healing rate of rats in the four groups was increased,and the wound healing rate of rats in the A2B2 group at 3,7,and 14 days after treatment was higher than that in the other three groups(P<0.05).(2)The wound bacterial culture results on day 7 after treatment demonstrated that the number of bacterial colonies in the A2B2 group was lower than that in the other three groups(P<0.05).Western blot assay exhibited that with the extension of treatment time,the protein expressions of tumor necrosis factor α and interleukin-6 in wound tissue of rats in the four groups were decreased,while the protein expressions of interleukin-10 were increased.The protein expressions of tumor necrosis factor α and interleukin-6 in the A2B2 group were lower than those in the other three groups(P<0.05).The protein expression of interleukin-10 in the A2B2 group was higher than that of the other three groups(P<0.05).(3)The wound hematoxylin-eosin staining on day 14 after treatment demonstrated that a large number of collagen fibers in the A2B2 group were parallel distributed and the most closely connected,which was significantly better than the other three groups.(4)The results of immunofluorescence staining indicated that the fluorescence intensity expression of CD31 in the A2B2 group was higher than that in the A1B1,A1B2 and A2B1 groups(P<0.05).q-PCR detection at 3,7,and 14 days after treatment exhibited that the mRNA expressions of vascular endothelial growth factor a and vascular endothelial growth factor receptor 2 in the A2B2 group were higher than those in the other three groups(P<0.05).Western blot assay at 3,7 and 14 days after treatment revealed that the protein expressions of vascular endothelial growth factor a and vascular endothelial growth factor receptor 2 in the A2B2 group were higher than those in the other three groups(P<0.05).(5)These findings confirm that 30 minutes of red light irradiation combined with silver alginate fiber dressing has better results in treatment of chronic non-healing wounds.

Photobiomodulation-induced osteogenic differentiation of mesenchymal stem cells / 中国组织工程研究

BACKGROUND:Mesenchymal stem cells are pluripotent stromal cells isolated from a variety of tissues,which can differentiate into osteoblasts under certain conditions.Photobiomodulation,as an external stimulus,can promote osteogenic differentiation combined with other inducers or alone,providing new ideas for solving a series of bone diseases. OBJECTIVE:To review the relevant literature and mechanisms of photobiomodulation-induced osteogenic differentiation of mesenchymal stem cells,which will lay a theoretical foundation for bone tissue engineering using mesenchymal stem cells as seed cells and may offer some suggestions for future studies. METHODS:Relevant articles were searched on CNKI,PubMed and Wed of Science databases with Chinese search terms of"photobiomodulation,low power laser,low level laser,light-emitting diode,mesenchymal stem cells,osteogenic differentiation,biomaterials"and English search terms of"photobiomodulation,low level laser(light),light-emitting diode(LED),mesenchymal stem cell,osteogenic differentiation,biomaterials".Finally,88 articles were included for analysis. RESULTS AND CONCLUSION:(1)Photobiomodulation represented by low level laser and diode laser has a positive effect on promoting the proliferation and differentiation of mesenchymal stem cells.(2)Photobiomodulation can induce osteogenic differentiation of mesenchymal stem cells,whose feasibility has been verified in cell and animal experiments.On one hand,photobiomodulation can promote the expansion and differentiation of stem cells in vitro by activating related signaling pathways and up-regulating the expression of osteogenic molecules.On the other hand,photobiomodulation can improve the survival rate of stem cells in vivo,promote homing effect and shorten the healing time of bone defects after stem cells are injected into the body.However,photobiomodulation has a biphasic dose effect,whose laser parameters,experimental environment,cell type and other factors in various studies are different,making the research results lack consistency and difficult to apply in the clinic.(3)Combined with biological materials,other physical factors and drugs,photobiomodulation can also accelerate osteogenic differentiation.(4)In conclusion,photobiomodulation has been used increasingly widely in the medical field with its advantages of non-invasive,efficient and less-side reactions,and its role in bone tissue engineering has gradually become prominent,which provides a new method for the treatment of bone defects and related diseases.Further exploration should be focused on the standardized treatment parameters of photobiomodulation.

Preparation and characterization of methacryloylated hyaluronic acid/acellular Wharton's jelly composite hydrogel scaffold / 中国组织工程研究

BACKGROUND:As tissue engineering brings new hope to the worldwide problem of articular cartilage repair,the construction of light-curing 3D printed hydrogel scaffolds with biomimetic composition is of great significance for cartilage tissue engineering. OBJECTIVE:To construct a biomimetic methacryloylated hyaluronic acid/acellular Wharton's jelly composite hydrogel scaffold by digital light processing 3D printing technology,and to evaluate its biocompatibility. METHODS:Wharton's jelly was isolated and extracted from human umbilical cord,then decellulated,freeze-dried,ground into powder,and dissolved in PBS to prepare 50 g/L acellular Wharton's jelly solution.Methylallylated hyaluronic acid was prepared,lyophilized and dissolved in PBS to prepare 50 g/L methylallylated hyaluronic acid solution.Acellular Wharton's jelly solution was mixed with methacrylyacylated hyaluronic acid solution at a volume ratio of 1:1,and was used as bio-ink after adding photoinitiator.Methylacrylylated hyaluronic acid hydrogel scaffolds(labeled as HAMA hydrogel scaffolds)and methylacrylylated hyaluronic acid/acellular Wharton's jelly gel scaffolds(labeled as HAMA/WJ hydrogel scaffolds)were prepared by digital light processing 3D printing technology,and the microstructure,swelling performance,biocompatibility,and cartilage differentiation performance of the scaffolds were characterized. RESULTS AND CONCLUSION:(1)Under scanning electron microscope,the two groups of scaffolds showed a three-dimensional network structure,and the fiber connection of HAMA/WJ hydrogel scaffold was more uniform.Both groups achieved swelling equilibrium within 10 hours,and the equilibrium swelling ratio of HAMA/WJ hydrogel scaffold was lower than that of HAMA hydrogel scaffold(P＜0.05).(2)CCK-8 assay showed that HAMA/WJ hydrogel scaffold could promote the proliferation of bone marrow mesenchymal stem cells compared with HAMA hydrogel scaffold.Dead/live staining showed that bone marrow mesenchymal stem cells grew well on the two groups of scaffolds,and the cells on the HAMA/WJ hydrogel scaffolds were evenly distributed and more cells were found.Phalloidine staining showed better adhesion and spread of bone marrow mesenchymal stem cells in HAMA/WJ hydrogel scaffold than in HAMA.(3)Bone marrow mesenchymal stem cells were inoculated into the two groups for chondrogenic induction culture.The results of qRT-PCR showed that the mRNA expressions of agglutinoglycan,SOX9 and type Ⅱ collagen in the HAMA/WJ hydrogel scaffold group were higher than those in the HAMA hydrogel scaffold group(P＜0.05,P＜0.01).(4)These findings indicate that the digital light processing 3D bioprinting HAMA/WJ hydrogel scaffold can promote the proliferation,adhesion,and chondrogenic differentiation of bone marrow mesenchymal stem cells.

Effect of photon cervical vertebra massage instrument on improving neck pain and related functions in patients with chronic neck pain / 中国组织工程研究

BACKGROUND:Red light therapy has the non-invasive and cost-effective characteristics,and is widely used in various acute and chronic pains in clinic.However,currently,the phototherapy equipment used in clinic is expensive and has certain site limitations,so it is necessary to explore more convenient and economical phototherapy applications. OBJECTIVE:To observe the clinical efficacy of a self-developed photon cervical vertebra massage instrument for chronic neck pain. METHODS:From November 2022 to February 2023,24 patients with chronic neck pain were recruited from the Department of Rehabilitation Medicine,Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine,including 18 females and 6 males,with a mean age of(29.67±6.40)years.The body mass index was(21.39±3.52)kg/m2.Photon cervical vertebra massage instrument was used twice a day for 20 minutes each time for four weeks.The changes in visual analog scale score,pressure pain threshold,neck active activity,neck disability index,and Pittsburgh sleep quality index were observed before,after 2 and 4 weeks of treatment. RESULTS AND CONCLUSION:(1)Compared with before treatment,after four weeks of treatment,visual analog scale score,pressure pain threshold,neck disability index,and Pittsburgh sleep quality index were all improved(P<0.05),while some cervical motion(extension,left and right rotation)improved(P<0.05)after 4 weeks of treatment.(2)Bilateral visual analog scale scores,left trapezius muscle pressure pain threshold,C5C6 pressure pain threshold,and neck disability index improved after 2 weeks of treatment(P<0.05).(3)It is indicated that the application of photon cervical vertebra massage instrument can improve the pain score,muscle tenderness,sleep quality,functional level,and partial active activity of patients with chronic neck pain in a short period,and is a convenient,effective,and safe treatment method.

Effects of blue light on the development of the dioptric system in guinea pigs / 眼科新进展

Objective To investigate the effect of blue light on the dioptric development of the eyes of lens-induced myopia(LIM)guinea pigs.Methods Three-week-old trichromatic guinea pigs were randomly divided into three groups:control group,white light LIM(WL)group,and blue light LIM(BL)group(420 nm LED light,with an illuminance of 700 lx);guinea pigs in the latter two groups wore-10.00 D lenses in their right eyes to induce myopia.All guinea pigs under-went a 12 h light/12 h dark treatment cycle.Before and 2,4 weeks after the intervention,the diopter,axial length,retinal thickness and choroidal thickness were measured in all groups.After 4 weeks of intervention,the corneal fluorescent stai-ning and retinal Hematoxylin and Eosin(HE)staining were conducted.Results Compared with the control group,from week 0 to week 2 of the intervention(changes in weeks 0-2),the eyes in the WL group drifted(-2.22±1.28)D towards myopia,the axial length lengthened by(0.40±0.05)mm,and the retinal and choroidal thicknesses reduced by(-7.42± 7.04)μm and(-6.29±4.66)μm,respectively;compared with the WL group,in the BL group,the eyes drifted toward hyperopia by(0.48±1.16)D,the axial length increased by(0.20±0.10)mm,and retinal and choroidal thicknesses in-creased by(1.36±7.46)μm and(8.05±8.08)μm,respectively(all P＜0.05).From week 2 to week 4(changes in weeks 2-4),compared with the control group,the diopter in the WL and BL groups progressed towards myopia,with changes of(-4.64±0.50)D and(-2.11±2.02)D,respectively(both P＜0.05);the axial length lengthened,and reti-nal and choroidal thicknesses reduced in the WL group,with changes of(0.44±0.06)mm,(-7.35±5.87)μm and(-4.84±2.61)μm,while the choroidal thickness and the retinal thickness decreased in the BL group,with changes of(-0.33±5.95)μm and(-4.78±4.96)μm,respectively.Observations of corneal fluorescence staining and retinal HE staining indicated that prolonged blue light exposure could lead to damage to corneal and retinal cells.Conclusion Blue light may influence the development of myopia through choroid-related mechanisms,but its inhibitory effect is not positive-ly correlated with time.Prolonged exposure to blue light can damage the cornea and retina,thereby reducing the inhibitory effect.

Research progress of health lighting and prevention and control of children's myopia / 眼科新进展

The prevalence of myopia is substantial in China,significantly impacting children's visual health.Current research indicates that extended screen time and inadequate outdoor activities are pivotal factors contributing to childhood myopia.These risk factors are closely associated with light parameters,including intensity,duration,frequency and spec-trum.Moreover,inappropriate nighttime lighting can disturb children's circadian rhythms and sleep and contribute to myo-pia development.This study reviews clinical research and epidemiological data on screen time,outdoor activities,light properties and circadian rhythms,aiming to offer recommendations and guidance for preventing myopia in children.

Preventive and therapeutic effects of compound wild chrysanthemum eye pad on blue light-induced alteration of meibomian gland function in mice and its mechanism / 中华实验眼科杂志

Objective:To investigate the preventive and therapeutic effects of compound wild chrysanthemum eye pad on blue light-induced alteration of meibomian gland function in mice and its mechanism.Methods:Sixty-four 15-week-old male C57BL/6J mice were divided into two groups of 32 mice each according to random numbers for the prevention test and the treatment test.The respective 32 mice in the prevention and treatment experiments were randomly divided into normal group, blue light group, solvent group and eye pad group according to random numbers, with eight mice in each group, respectively.In the prevention experiments, mice in each group were exposed to blue light at a wavelength of 460 nm and a light intensity of 2 000 lx for 6 hours per day for 15 consecutive days to establish a mouse model of meibomian gland function changes except for the normal group.The solvent group and the eye pad group were treated with the corresponding eye pad before and after the blue light exposure for 25 minutes daily for the 15 consecutive days.The blue light group was treated with blue light exposure only for 15 days, and the mice were photographed at the edge of the meibomian gland on day 15 to observe the function of the meibomian gland except for the normal group.In the treatment test, all groups of mice except the normal group were induced the altered function of the mouse meibomian gland by the above method.The solvent and eye pad groups were treated with corresponding eye pads for 25 minutes in the morning and afternoon of each day for 15 consecutive days after blue light exposure.The blue light group was kept in a standard environment for 15 days and the changes in meibomian gland function of mice were detected by meibomian gland photographs on day 15.Photography of the eyelid margin in vitro, oil red O staining, and hematoxylin-eosin staining were performed to observe the histologic changes in the meibomian glands of mice after the preventive and experimental treatment.The relative expression of interleukin-1β (IL-1β), IL-6, tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ) mRNA in mouse meibomian gland tissues was detected by real-time fluorescence quantitative PCR.The expression of nuclear factor-κB (NF-κB) and phosphorylation of NF-κB (p-NF-κB) proteins in mice meibomian gland tissues was detected by Western blot to assess the degree of amelioration of blue light-induced inflammation in mouse meibomian glands by the compound wild chrysanthemum eye pad.This study was conducted in accordance with the Statement of the Association for Research in Vision and Ophthalmology on the Use of Animals in Ophthalmology and Vision Research, and was approved by the Animal Ethics Committee of Xiamen University (No.XMULAC20220258). Results:Compared with the normal group, a gradually increased number of blocked meibomian gland openings, and a gradually decreased remaining area of lower meibomian gland, were observed in the mice after 15 days of blue light group, and all the differences were statistically different (all at P<0.05). In the prevention test, the number of obstructed opening in the eye pad group was 1.833±0.753, which was significantly less than 3.667±1.033 in the solvent group ( P<0.05). The relative remaining area of the lower lid meibomian gland in the eye pad group was 0.718±0.091, which was significantly greater than 0.624±0.130 in the solvent group ( P<0.05). Hematoxylin-eosin staining showed inflammatory cell infiltration in mouse meibomian gland in the blue light and solvent groups.There was no inflammatory cell infiltration in eye pad group, and the morphology of the acini was similar to that of the normal group.Oil red O staining showed that there was no significant lipid deposition in the groups.The relative expressions of IL-1β, IL-6, TNF-α, and IFN-γ mRNA were significantly lower, and the relative expressions of NF-κB and p-NF-κB proteins were significantly lower in the eye pad group than in the solvent group, showing statistically significant differences (all at P<0.05). In the treatment test, the number of obstructed openings in the eye pad group and solvent group was 4.333±1.211 and 4.833±1.722, respectively, and the relative remaining area of the lower meibomian gland was 0.572±0.151 and 0.588±0.154, respectively, showing no statistically significant differences (both at P>0.05). Hematoxylin-eosin staining showed inflammatory cell infiltration in mouse meibomian glands in the blue light and solvent groups, with a similar morphology of acini as in the normal group.There was no inflammatory cell infiltration in eye pad group.Oil red O staining showed that there was no significant lipid deposition in the groups.The relative expressions of IL-1β, IL-6, and IFN-γ mRNA were significantly lower and the relative expressions of NF-κB and p-NF-κB proteins were significantly lower in the eye pad group than in the solvent group (all at P<0.05). Conclusions:Compound wild chrysanthemum eye pad may have preventive and therapeutic effects on blue light-induced changes in meibomian gland function by reducing the inflammatory response of meibomian gland tissue through the inhibition of the NF-κB signaling pathway.