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https://www.readbyqxmd.com/read/28418197/body-mass-index-associates-with-white-matter-microstructure-in-bipolar-depression
#1
Elena Mazza, Sara Poletti, Irene Bollettini, Clara Locatelli, Andrea Falini, Cristina Colombo, Francesco Benedetti
OBJECTIVES: Obesity has been reported in over 60% of bipolar disorder (BD) patients. It worsens the severity of illness, and influences cognition and functional outcomes. White matter (WM) abnormalities are one of the most consistently reported findings in neuroimaging studies of BD. We hypothesized that body mass index (BMI) could correlate with WM integrity in bipolar patients. METHODS: We evaluated BMI in a sample of 164 depressed patients affected by BD. We performed whole-brain tract-based spatial statistics with threshold-free cluster enhancement for the diffusion tensor imaging (DTI) measures of WM integrity: fractional anisotropy; axial, radial, and mean diffusivity...
April 18, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28415806/lithium-protects-hippocampal-progenitors-cognitive-performance-and-hypothalamus-pituitary-function-after-irradiation-to-the-juvenile-rat-brain
#2
Kai Zhou, Cuicui Xie, Malin Wickström, Amalia M Dolga, Yaodong Zhang, Tao Li, Yiran Xu, Carsten Culmsee, Per Kogner, Changlian Zhu, Klas Blomgren
Cranial radiotherapy in children typically causes delayed and progressive cognitive dysfunction and there is no effective preventive strategy for radiation-induced cognitive impairments. Here we show that lithium treatment reduced irradiation-induced progenitor cell death in the subgranular zone of the hippocampus, and subsequently ameliorated irradiation-reduced neurogenesis and astrogenesis in the juvenile rat brain. Irradiation-induced memory impairment, motor hyperactivity and anxiety-like behaviour were normalized by lithium treatment...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28398880/cerebrovascular-remodeling-and-neuroinflammation-is-a-late-effect-of-radiation-induced-brain-injury-in-non-human-primates
#3
Rachel N Andrews, Linda J Metheny-Barlow, Ann M Peiffer, David B Hanbury, Janet A Tooze, J Daniel Bourland, Robert E Hampson, Samuel A Deadwyler, J Mark Cline
Fractionated whole-brain irradiation (fWBI) is a mainstay of treatment for patients with intracranial neoplasia; however late-delayed radiation-induced normal tissue injury remains a major adverse consequence of treatment, with deleterious effects on quality of life for affected patients. We hypothesize that cerebrovascular injury and remodeling after fWBI results in ischemic injury to dependent white matter, which contributes to the observed cognitive dysfunction. To evaluate molecular effectors of radiation-induced brain injury (RIBI), real-time quantitative polymerase chain reaction (RT-qPCR) was performed on the dorsolateral prefrontal cortex (DLPFC, Brodmann area 46), hippocampus and temporal white matter of 4 male Rhesus macaques (age 6-10 years), which had received 40 Gray (Gy) fWBI (8 fractions of 5 Gy each, twice per week), and 3 control comparators...
March 6, 2017: Radiation Research
https://www.readbyqxmd.com/read/28391424/optimal-radiation-therapy-for-small-cell-lung-cancer
#4
REVIEW
Michael F Gensheimer, Billy W Loo
Radiation therapy plays an important role in the management of both limited stage and extensive stage small cell lung cancer. For limited stage disease, there has been a trend toward reduced size of thoracic radiation fields, which has the potential to reduce toxicity. FDG-PET staging helps make this possible by more accurately identifying areas of nodal and metastatic involvement. Trials have demonstrated similar outcomes using a range of radiation fractionation schedules, allowing flexibility in individualizing treatment...
April 2017: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/28390167/brain-structure-and-verbal-function-across-adulthood-while-controlling-for-cerebrovascular-risks
#5
L Sanfratello, S L Lundy, C Qualls, J E Knoefel, J C Adair, A Caprihan, J M Stephen, C J Aine
The development and decline of brain structure and function throughout adulthood is a complex issue, with cognitive aging trajectories influenced by a host of factors including cerebrovascular risk. Neuroimaging studies of age-related cognitive decline typically reveal a linear decrease in gray matter (GM) volume/density in frontal regions across adulthood. However, white matter (WM) tracts mature later than GM, particularly in regions necessary for executive functions and memory. Therefore, it was predicted that a middle-aged group (MC: 35-45 years) would perform best on a verbal working memory task and reveal greater regional WM integrity, compared with both young (YC: 18-25 years) and elder groups (EC: 60+ years)...
April 8, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28388630/effectiveness-of-diffusion-tensor-imaging-in-differentiating-early-stage-subcortical-ischemic-vascular-disease-alzheimer-s-disease-and-normal-ageing
#6
Min-Chien Tu, Chung-Ping Lo, Ching-Feng Huang, Yen-Hsuan Hsu, Wen-Hui Huang, Jie Fu Deng, Yung-Chuan Lee
OBJECTIVE: To describe and compare diffusion tensor imaging (DTI) parameters between patients with subcortical ischemic vascular disease (SIVD) and Alzheimer's disease (AD) diagnosed using structuralized neuropsychiatric assessments, and investigate potential neuronal substrates related to cognitive performance. METHODS: Thirty-five patients with SIVD, 40 patients with AD, and 33 cognitively normal control (NC) subjects matched by age and education level were consecutively recruited and underwent cognitive function assessments and DTI examinations...
2017: PloS One
https://www.readbyqxmd.com/read/28385827/lesion-location-and-cognitive-impact-of-cerebral-small-vessel-disease
#7
REVIEW
J Matthijs Biesbroek, Nick A Weaver, Geert Jan Biessels
Cerebral small vessel disease (SVD) is an important cause of cognitive impairment. Important MRI manifestations of SVD include white matter hyperintensities (WMH) and lacunes. This narrative review addresses the role of anatomical lesion location in the impact of SVD on cognition, integrating findings from early autopsy studies with emerging findings from recent studies with advanced image analysis techniques. Early autopsy and imaging studies of small case series indicate that single lacunar infarcts in, for example the thalamus, caudate nucleus or internal capsule can cause marked cognitive impairment...
April 25, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28382975/radiation-induces-progenitor-cell-death-microglia-activation-and-blood-brain-barrier-damage-in-the-juvenile-rat-cerebellum
#8
Kai Zhou, Martina Boström, C Joakim Ek, Tao Li, Cuicui Xie, Yiran Xu, Yanyan Sun, Klas Blomgren, Changlian Zhu
Posterior fossa tumors are the most common childhood intracranial tumors, and radiotherapy is one of the most effective treatments. However, irradiation induces long-term adverse effects that can have significant negative impacts on the patient's quality of life. The purpose of this study was to characterize irradiation-induced cellular and molecular changes in the cerebellum. We found that irradiation-induced cell death occurred mainly in the external germinal layer (EGL) of the juvenile rat cerebellum. The number of proliferating cells in the EGL decreased, and 82...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28380636/the-role-of-image-guided-intensity-modulated-proton-therapy-in-glioma
#9
David R Grosshans, Radhe Mohan, Vinai Gondi, Helen A Shih, Anita Mahajan, Paul D Brown
Gliomas represent a broad spectrum of disease with life-expectancy outcomes ranging from months to decades. As our understanding of the molecular profiles of gliomas expands rapidly, practitioners are now better able to identify patients with favorable versus nonfavorable prognoses. Radiation therapy plays a key role in glioma treatment, improving disease control and oftentimes survival. However, for survivors, either long-term or short-term, radiation-induced cognitive impairments may negatively impact their quality of life...
April 1, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28380635/stereotactic-radiosurgery-alone-for-multiple-brain-metastases-a-review-of-clinical-and-technical-issues
#10
Arjun Sahgal, Mark Ruschin, Lijun Ma, Wilko Verbakel, David Larson, Paul D Brown
Over the past three decades several randomized trials have enabled evidence-based practice for patients presenting with limited brain metastases. These trials have focused on the role of surgery or stereotactic radiosurgery (SRS) with or without whole brain radiation therapy (WBRT). As a result, it is clear that local control should be optimized with surgery or SRS in patients with optimal prognostic factors presenting with up to 4 brain metastases. The routine use of adjuvant WBRT remains debatable, as although greater distant brain control rates are observed, there is no impact on survival, and modern outcomes suggest adverse effects from WBRT on patient cognition and quality of life...
April 1, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28380447/the-p75-neurotrophin-receptor-regulates-cranial-irradiation-induced-hippocampus-dependent-cognitive-dysfunction
#11
Xin Ding, Hao-Hao Wu, Sheng-Jun Ji, Shang Cai, Pei-Wen Dai, Mei-Ling Xu, Jun-Jun Zhang, Qi-Xian Zhang, Ye Tian, Quan-Hong Ma
Cognitive deficits, characterized by progressive problems with hippocampus-dependent learning, memory and spatial processing, are the most serious complication of cranial irradiation. However, the underlying mechanisms remain obscure. The p75 neurotrophin receptor (p75NTR) is involved in a diverse arrays of cellular responses, including neurite outgrowth, neurogenesis, and negative regulation of spine density, which are associated with various neurological disorders. In this study, male Sprague-Dawley (SD) rats received 10 Gy cranial irradiation...
March 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28375680/electroacupuncture-improves-cognitive-function-and-hippocampal-neurogenesis-after-brain-irradiation
#12
Xing-Wen Fan, Huan-Huan Liu, Hong-Bing Wang, Fu Chen, Yu Yang, Yan Chen, Shi-Kuo Guan, Kai-Liang Wu
Cognitive impairments after brain irradiation seriously affect quality of life for patients, and there is currently no effective treatment. In this study using an irradiated rat model, the role of electroacupuncture was investigated for treatment of radiation-induced brain injury. Animals received 10 Gy exposure to the entire brain, and electroacupuncture was administered 3 days before irradiation as well as up to 2 weeks postirradiation. Behavioral tests were performed one month postirradiation, and rats were then sacrificed for histology or molecular studies...
April 4, 2017: Radiation Research
https://www.readbyqxmd.com/read/28363246/results-from-a-tailored-sms-and-behavior-tracking-pilot-study-on-sun-safe-behaviors-in-young-women
#13
Susan Darlow, Carolyn Heckman
BACKGROUND: The elevated rates of ultraviolet radiation (UVR) exposure and low rates of sun protection in young adult women indicate a need for age- and gender-appropriate interventions that address these behaviors. AIMS: To examine the effects of daily behavior tracking and individually tailored text messages on sun protection and UVR exposure behaviors in young adult women at moderate to high risk of developing skin cancer. METHOD: One hundred and four young adult women at risk of skin cancer were randomized to receive the behavior-tracking intervention only, tailored text messages only, both interventions, or neither...
March 1, 2017: Health Education & Behavior: the Official Publication of the Society for Public Health Education
https://www.readbyqxmd.com/read/28340924/hippocampal-sparing-whole-brain-radiotherapy-for-lung-cancer
#14
REVIEW
Ren Zhao, Wei Kong, Jun Shang, Hong Zhe, Yan-Yang Wang
Brain metastases occur in 20% to 40% of lung cancer patients. Whole-brain radiotherapy (WBRT) has long been considered the treatment of choice for many patients with lung cancer, because of its wide availability, ease of delivery, and effectiveness in prolonging survival. However, WBRT is also associated with several side effects, such as decline in memory and other cognitive functions. There exists significant preclinical and clinical evidence that radiation-induced injury to the hippocampus correlates with neurocognitive decline of patients who receive WBRT...
March 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28333012/cerebral-cortex-regions-selectively-vulnerable-to-radiation-dose-dependent-atrophy
#15
Tyler M Seibert, Roshan Karunamuni, Samar Kaifi, Jeffrey Burkeen, Michael Connor, Anitha Priya Krishnan, Nathan S White, Nikdokht Farid, Hauke Bartsch, Vyacheslav Murzin, Tanya T Nguyen, Vitali Moiseenko, James B Brewer, Carrie R McDonald, Anders M Dale, Jona A Hattangadi-Gluth
PURPOSE AND OBJECTIVES: Neurologic deficits after brain radiation therapy (RT) typically involve decline in higher-order cognitive functions such as attention and memory rather than sensory defects or paralysis. We sought to determine whether areas of the cortex critical to cognition are selectively vulnerable to radiation dose-dependent atrophy. METHODS AND MATERIALS: We measured change in cortical thickness in 54 primary brain tumor patients who underwent fractionated, partial brain RT...
April 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28332424/neuroprotective-effect-of-dl-3-n-butylphthalide-on-patients-with-radiation-induced-brain-injury-a-clinical-retrospective-cohort-study
#16
Xiaoni Zhang, Yi Li, Xiangpen Li, Xiaoming Rong, Yamei Tang, Ying Peng
PURPOSE: To evaluate the neuroprotective effects of Dl-3-n-butylphthalide (NBP) on patients with radiation-induced brain injury, a hospital-based, clinical retrospective cohort study was conducted. PATIENTS AND METHODS: Data was collected on patients diagnosed with radiation-induced brain injury from January 2009 to January 2015 in Department of Neurology, Sun Yat-Sen Memorial Hospital. All patients enrolled have received cranial radiotherapy and were diagnosed with radiation-induced brain injury...
March 23, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28288921/therapy-for-recurrent-high-grade-gliomas-results-of-a-prospective-multicenter-study-on-health-related-quality-of-life
#17
Linda Stöckelmaier, Mirjam Renovanz, Jochem König, Katrin Nickel, Anne-Katrin Hickmann, Regine Mayer-Steinacker, Minou Nadji-Ohl, Oliver Ganslandt, Lars Bullinger, Christian Rainer Wirtz, Jan Coburger
OBJECTIVE: To assess impact of therapy on patients' health-related quality of life (HRQoL) in recurrent high-grade glioma (HGG) in an unselected cohort. METHODS: In this prospective multicenter study, we analyzed EORTC QLQ-C30 and BN20 questionnaires of 92 patients within one year after diagnosis of tumor recurrence of a HGG and respective treatment. We evaluated the influence of re-radiation, second and third-line chemotherapies and number of recurrent surgeries on sum scores for functioning, symptoms and total score as well as on sub scores for functioning and neurological symptoms using multivariate mixed models and descriptive statistics...
March 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28274393/low-dose-cranial-boost-in-high-risk-adult-acute-lymphoblastic-leukemia-patients-undergoing-bone-marrow-transplant
#18
William Su, Marcher Thompson, Ren-Dih Sheu, Amir Steinberg, Luis Isola, Richard Stock, Richard L Bakst
PURPOSE: Acute lymphoblastic leukemia (ALL) has a predilection for CNS involvement. Patients with high-risk ALL are often managed with transplant using a radiation-based conditioning regimen. Historically, a high-dose prophylactic cranial boost (CB) of ≥12 Gy was given to reduce risk of central nervous system (CNS) recurrence. However, the use of CB has fallen out of favor because of toxicity concerns. In high-risk adults undergoing transplant at our institution, we have used a low-dose 6 Gy CB to reduce toxicity while conditioning adults with fully developed brains...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28258899/are-future-radiation-oncologists-equipped-with-the-knowledge-to-manage-elderly-patients-with-cancer
#19
Lucinda Morris, Niluja Thiruthaneeswaran, Margot Lehman, Gina Hasselburg, Sandra Turner
PURPOSE: To assess radiation oncology (RO) trainee knowledge, attitudes, and clinical practice relating to geriatric oncology. METHODS AND MATERIALS: A custom online survey was anonymously administered to RO trainees across Australia, New Zealand, and Singapore. The survey assessed 3 domains: (1) trainee demographics and prior training in geriatric medicine; (2) current clinical practice and attitudes regarding elderly cancer patients and radiation therapy; and (3) opinions regarding educational opportunities around geriatric oncology...
January 9, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28248991/limbic-thalamo-cortical-projections-and-reward-related-circuitry-integrity-affects-eating-behavior-a-longitudinal-dti-study-in-adolescents-with-restrictive-eating-disorders
#20
Gaia Olivo, Lyle Wiemerslage, Ingemar Swenne, Christina Zhukowsky, Helena Salonen-Ros, Elna-Marie Larsson, Santino Gaudio, Samantha J Brooks, Helgi B Schiöth
Few studies have used diffusion tensor imaging (DTI) to investigate the micro-structural alterations of WM in patients with restrictive eating disorders (rED), and longitudinal data are lacking. Twelve patients with rED were scanned at diagnosis and after one year of family-based treatment, and compared to twenty-four healthy controls (HCs) through DTI analysis. A tract-based spatial statistics procedure was used to investigate diffusivity parameters: fractional anisotropy (FA) and mean, radial and axial diffusivities (MD, RD and AD, respectively)...
2017: PloS One
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