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https://www.readbyqxmd.com/read/28401627/development-of-semiconducting-polymer-nanoparticles-for-photoacoustic-imaging
#1
REVIEW
Dong Cui, Chen Xie, Kanyi Pu
Semiconducting polymer nanoparticles (SPNs) have evolved into a new class of photonic materials with great potential for biomedical applications. Depending on the polymer structures, SPNs can be developed into optical agents for fluorescence and chemiluminescence imaging, photosensitizers for photodynamic therapy, and heat converters for photothermal therapy. In this feature article, recent work is summarized on the development of SPNs for in vivo photoacoustic (PA) imaging, a state-of-the-art imaging modality that converts light energy into mechanical acoustic waves to provide deep tissue penetration...
April 12, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28385173/novel-augmentation-strategies-in-major-depression
#2
Klaus Martiny
Hypothesis The hypotheses of all the four included studies share the common idea that it is possible to augment the effect of antidepressant drug treatment by applying different interventions and with each intervention attain a clinically meaningful better effect compared to a control condition, and with minor side effects, thus improving the short- and medium-term outcome in major depression. Procedures Study design The basic study design has been the double blind randomised controlled trial (RCT). In the light therapy study, all patients were treated with sertraline for the whole of the study duration...
April 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28364493/effects-of-melatonin-and-bright-light-treatment-in-childhood-chronic-sleep-onset-insomnia-with-late-melatonin-onset-a-randomized-controlled-study
#3
Annette van Maanen, Anne Marie Meijer, Marcel G Smits, Kristiaan B van der Heijden, Frans J Oort
Study Objectives: Chronic sleep onset insomnia with late melatonin onset is prevalent in childhood, and has negative daytime consequences. Melatonin treatment is known to be effective in treating these sleep problems. Bright light therapy might be an alternative treatment, with potential advantages over melatonin treatment. In this study, we compare the effects of melatonin and bright light treatment with a placebo condition in children with chronic sleep onset insomnia and late melatonin onset...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28360513/evaluation-of-the-efficacy-of-randomized-controlled-trials-of-sensory-stimulation-interventions-for-sleeping-disturbances-in-patients-with-dementia-a-systematic-review
#4
REVIEW
Tatiana-Danai Dimitriou, Magdalini Tsolaki
OBJECTIVE: The current review aims to evaluate the sensory stimulation interventions in terms of reducing sleeping disturbances in patients with dementia. The nonpharmacological interventions seem to be an efficient, inexpensive, and easy tool for family caregivers. Moreover, sleeping disorders increase caregivers' distress and may lead to hospitalization. METHODS: A systematic literature search was performed. Eleven randomized controlled trials have been found...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28358808/interventions-to-treat-mental-disorders-during-pregnancy-a-systematic-review-and-multiple-treatment-meta-analysis
#5
Leontien M van Ravesteyn, Mijke P Lambregtse-van den Berg, Witte J G Hoogendijk, Astrid M Kamperman
BACKGROUND: For women suffering from an antepartum mental disorder (AMD), there is lack of evidence-based treatment algorithms due to the complicated risk-benefit analysis for both mother and unborn child. We aimed to provide a comprehensive overview of pharmacological and non-pharmacological interventions to treat AMD and performed a meta-analysis of the estimated treatment effect on the psychiatric symptoms during pregnancy. METHODS: MedLine, PsycINFO and Embase databases were searched by two independent reviewers for clinical trials with a control condition on treatment of women with AMD, i...
2017: PloS One
https://www.readbyqxmd.com/read/28338291/versatile-polymer-nanoparticles-as-two-photon-triggered-photosensitizers-for-simultaneous-cellular-deep-tissue-imaging-and-photodynamic-therapy
#6
Liang Guo, Jiechao Ge, Qian Liu, Qingyan Jia, Hongyan Zhang, Weimin Liu, Guangle Niu, Sha Liu, Jianru Gong, Steffen Hackbarth, Pengfei Wang
Clinical applications of current photodynamic therapy (PDT) photosensitizers (PSs) are often limited by their absorption in the UV-vis range that possesses limited tissue penetration ability, leading to ineffective therapeutic response for deep-seated tumors. Alternatively, two-photon excited PS (TPE-PS) using NIR light triggered is one the most promising candidates for PDT improvement. Herein, multimodal polymer nanoparticles (PNPs) from polythiophene derivative as two-photon fluorescence imaging as well as two-photon-excited PDT agent are developed...
March 24, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28336272/apigenin-7-diglucuronide-protects-retinas-against-bright-light-induced-photoreceptor-degeneration-through-the-inhibition-of-retinal-oxidative-stress-and-inflammation
#7
Minjuan Bian, Yong Zhang, Xiaoye Du, Jing Xu, Jingang Cui, Jiangping Gu, Weiliang Zhu, Teng Zhang, Yu Chen
Vision impairment in retinal degenerative diseases such as age-related macular degeneration is primarily associated with photoreceptor degeneration, in which oxidative stress and inflammatory responses are mechanistically involved as central players. Therapies with photoreceptor protective properties remain to be developed. Apigenin-7-diglucuronide (A7DG), a flavonoid glycoside, is present in an assortment of medicinal plants with anti-inflammatory or ant-oxidant activities. However, the pharmacological significance of A7DG remains unknown in vivo...
March 20, 2017: Brain Research
https://www.readbyqxmd.com/read/28327443/correcting-delayed-circadian-phase-with-bright-light-therapy-predicts-improvement-in-adhd-symptoms-a-pilot-study
#8
Rachel E Fargason, Aaron D Fobian, Lauren M Hablitz, Jodi R Paul, Brittny A White, Karen L Cropsey, Karen L Gamble
Attention-deficit/hyperactivity disorder (ADHD) is a common condition with comorbid insomnia reported in >70% of children and adults. These patients demonstrate delays in sleep-wake rhythms, nocturnal rise in melatonin, and early morning rise in cortisol. Given that standard psychopharmacologic treatments for ADHD often do not completely control symptoms in participants with circadian rhythm delay, we sought to test whether bright light therapy (BLT) advances circadian rhythms and further reduces ADHD symptoms over standard treatments...
March 6, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28324298/circadian-disruption-associated-with-alzheimer-s-disease
#9
REVIEW
Yumna Saeed, Sabra M Abbott
Alzheimer's disease (AD) is increasing in prevalence and has a significant impact on caregivers and the healthcare system. One of the many physiologic process affected by AD is the circadian system, with disruption reflected in abnormalities of the sleep-wake cycle. This interaction is bidirectional, with circadian and sleep disruption influencing disease progression. Understanding the bidirectional relationship between AD and circadian disruption may allow for earlier recognition of the potential to develop dementia as well as improved targeted approaches for therapy...
April 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28320205/highly-emissive-dye-sensitized-upconversion-nanostructure-for-dual-photosensitizer-photodynamic-therapy-and-bioimaging
#10
Jiating Xu, Piaoping Yang, MIngdi Sun, Huiting Bi, Bin Liu, Dan Yang, Shili Gai, Fei He, Jun Lin
Rare-earth-based upconversion nanotechnology has recently shown great promise for photodynamic therapy (PDT). However, the NIR-induced PDT is greatly restricted by the overheating issues on normal bodies and low yields of reactive oxygen species (ROS, 1O2). Here, IR-808 sensitized upconversion nanoparticles (NaGdF4:Yb,Er@NaGdF4:Nd,Yb) were combined with mesoporous silica, which has Ce6 (red-light-excited photosensitizer) and MC540 (green-light-excited photosensitizer) loaded inside through covalent bond and electrostatic interaction, respectively...
March 20, 2017: ACS Nano
https://www.readbyqxmd.com/read/28319041/practical-use-of-a-plastic-scintillator-for-quality-assurance-of-electron-beam-therapy
#11
Katsunori Yogo, Yuya Tatsuno, Masato Tsuneda, Yuki Aono, Daiki Mochizuki, Yoshiki Fujisawa, Akihiro Matsushita, Minoru Ishigami, Hiromichi Ishiyama, Kazushige Hayakawa
Quality assurance (QA) of the clinical electron beam is essential for performing accurate and safe radiation therapy. However, with advances in radiation therapy, QA tends to be labor-intensive and time consuming. Here, we propose the practical use of a tissue-equivalent plastic scintillator for quick and easy QA of clinical electron beams. This tool enabled us to verify simultaneously the constancy of output, beam quality, depth and lateral dose profiles during monthly QAs at lower doses of irradiation (small MUs)...
March 20, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28241159/timed-light-therapy-for-sleep-and-daytime-sleepiness-associated-with-parkinson-disease-a-randomized-clinical-trial
#12
Aleksandar Videnovic, Elizabeth B Klerman, Wei Wang, Angelica Marconi, Teresa Kuhta, Phyllis C Zee
Importance: Impaired sleep and alertness are some of the most common nonmotor manifestations of Parkinson disease (PD) and currently have only limited treatment options. Light therapy (LT), a widely available treatment modality in sleep medicine, has not been systematically studied in the PD population. Objective: To determine the safety and efficacy of LT on excessive daytime sleepiness (EDS) associated with PD. Design, Settings, and Participants: This randomized, placebo-controlled, clinical intervention study was set in PD centers at Northwestern University and Rush University...
April 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28224667/the-applicability-of-bright-light-therapy-in-adults-with-moderate-severe-or-profound-intellectual-disabilities-a-brief-report
#13
H Hermans, N Soerokromo, H Evenhuis
BACKGROUND: Bright light therapy (BLT) is effective in the treatment of depression in the general population. It may be a good treatment option for adults with intellectual disabilities (ID) too. However, its applicability and effectiveness are not studied in groups of adults with ID, yet. Our aim was to study the applicability of BLT in adults with ID. METHODS: Bright light therapy was offered for 2 weeks, using a 10 000 lux light box, to 14 adults with moderate, severe or profound ID...
February 22, 2017: Journal of Intellectual Disability Research: JIDR
https://www.readbyqxmd.com/read/28127845/bright-light-therapy-for-sleep-disturbance-in-dementia-is-most-effective-for-mild-to-moderate-alzheimer-s-type-dementia-a-case-series
#14
Hirotaka Sekiguchi, Shuji Iritani, Kiyoshi Fujita
BACKGROUND: Sleep problems in people with dementia are common and place a high burden on caregivers. Although hypnotic agents are often used to treat sleep disturbances, their use is associated with a considerable number of high-risk side-effects such as daytime sleepiness, amnesia, and an increased frequency of falling. The administration of bright light therapy (BLT) in the morning was a non-pharmacological remedy that was expected to treat sleep disorders in patients with dementia by entraining the circadian rhythm to ameliorate disturbances to the normal sleep-wake cycle...
January 27, 2017: Psychogeriatrics: the Official Journal of the Japanese Psychogeriatric Society
https://www.readbyqxmd.com/read/28072485/water-soluble-polymer-nanoparticles-constructed-by-three-component-self-assembly-an-efficient-theranostic-agent-for-phosphorescent-imaging-and-photodynamic-therapy
#15
Qi Yang, Min Shi, Heng Zhao, Jiaomin Lin, Lu An, Lili Cui, Hong Yang, Zhiguo Zhou, Qiwei Tian, Shiping Yang
Water-soluble polymer nanoparticles NP-1 and NP-2 were prepared by using a three-component self-assembly of an iridium complex, poly(4-vinyl pyridine-b-ethylene oxide) (P4VP-b-PEO), and methane sulfonic acid (MSA). Due to the unique metal-ligand charge-transfer transition property and the heavy-atom effect of the iridium atom, NP-1 and NP-2 showed bright phosphorescence and generated the singlet oxygen ((1) O2 ) species effectively under visible-light irradiation (λ>400 nm) with a power density of 300 mW cm(-2) ...
March 13, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28011473/comparison-of-tumor-recurrence-after-resection-of-highly-and-poorly-metastatic-triple-negative-breast-cancer-in-orthotopic-nude-mouse-models
#16
COMPARATIVE STUDY
Shuya Yano, Kiyoto Takehara, Hiroyuki Kishimoto, Hiroshi Tazawa, Yasuo Urata, Shunsuke Kagawa, Toshiyoshi Fujiwara, Michael Bouvet, Robert M Hoffman
BACKGROUND: Triple-negative breast cancer (TNBC), defined by the absence of receptors for estrogen, progesterone and human epithelial receptor 2, is a recalcitrant disease in need of effective therapy. We previously isolated highly-metastatic variants of the human TNBC cell line MDA-MB-231 using serial orthotopic implantation in nude mice. MATERIALS AND METHODS: In the present report, we compared local and metastatic recurrence in lymph nodes in orthotopic nude-mouse models after bright-light surgery (BLS) of tumors from highly-metastatic variants or poorly-metastatic parental MDA-MB-231-RFP cells...
2017: Anticancer Research
https://www.readbyqxmd.com/read/27912106/a-multicenter-randomized-controlled-trial-for-bright-light-therapy-in-adults-with-intellectual-disabilities-and-depression-study-protocol-and-obstacle-management
#17
Pauline C M Hamers, Heleen M Evenhuis, Heidi Hermans
Due to the limited cognitive and communicative abilities of adults with intellectual disabilities (ID), current treatment options for depression are often limited to lifestyle changes and pharmacological treatment. Bright light therapy (BLT) is an effective intervention for both seasonal and non-seasonal depression in the general population. BLT is an inexpensive, easy to carry out intervention with minimal side effects. However, knowledge on its anti-depressant effect in adults with ID is lacking. Obstacles in realizing a controlled intervention study in this particular study population may have contributed to this lack...
January 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/27851868/pharmacotherapies-for-sleep-disturbances-in-dementia
#18
REVIEW
Jenny McCleery, Daniel A Cohen, Ann L Sharpley
BACKGROUND: Sleep disturbances, including reduced nocturnal sleep time, sleep fragmentation, nocturnal wandering, and daytime sleepiness are common clinical problems in dementia, and are associated with significant caregiver distress, increased healthcare costs, and institutionalisation. Drug treatment is often sought to alleviate these problems, but there is significant uncertainty about the efficacy and adverse effects of the various hypnotic drugs in this vulnerable population. OBJECTIVES: To assess the effects, including common adverse effects, of any drug treatment versus placebo for sleep disorders in people with dementia, through identification and analysis of all relevant randomised controlled trials (RCTs)...
November 16, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27835725/bright-light-therapy-as-augmentation-of-pharmacotherapy-for-treatment-of-depression-a-systematic-review-and-meta-analysis
#19
REVIEW
Thomas M Penders, Cornel N Stanciu, Alexander M Schoemann, Philip T Ninan, Richard Bloch, Sy A Saeed
Background: Bright light therapy has demonstrated efficacy and is an accepted treatment for seasonal depression. It has been suggested that bright light therapy may have efficacy in nonseasonal depressions. Also, there is evidence that bright light therapy may improve responsiveness to antidepressant pharmacotherapy. Data Sources: We searched PubMed/MEDLINE, PsycINFO, PsycARTICLES, CINAHL, EMBASE, Scopus, and Academic OneFile for English-language literature published between January 1998 and April 2016, using the keywords bright light therapy AND major depression, bright light therapy AND depress*, bright light therapy AND bipolar depression, bright light therapy AND affective disorders, circadian rhythm AND major depression, circadian rhythm AND depress*, and circadian rhythm AND affective disorder...
October 20, 2016: Primary Care Companion to CNS Disorders
https://www.readbyqxmd.com/read/27835724/a-systematic-review-of-bright-light-therapy-for-eating-disorders
#20
REVIEW
Marshall T Beauchamp, Jennifer D Lundgren
Objective: Bright light therapy is a noninvasive biological intervention for disorders with nonnormative circadian features. Eating disorders, particularly those with binge-eating and night-eating features, have documented nonnormative circadian eating and mood patterns, suggesting that bright light therapy may be an efficacious stand-alone or adjunctive intervention. The purpose of this systematic literature review, using PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, was (1) to evaluate the state of the empirical treatment outcome literature on bright light therapy for eating disorders and (2) to explore the timing of eating behavior, mood, and sleep-related symptom change so as to understand potential mechanisms of bright light therapy action in the context of eating disorder treatment...
October 27, 2016: Primary Care Companion to CNS Disorders
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