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https://www.readbyqxmd.com/read/28627984/diagnostic-accuracy-of-proton-magnetic-resonance-spectroscopy-and-perfusion-weighted-imaging-in-brain-gliomas-follow-up-a-single-institutional-experience
#1
Monica Anselmi, Alessia Catalucci, Valentina Felli, Valentina Vellucci, Alessandra Di Sibio, Giovanni Luca Gravina, Mario Di Staso, Ernesto Di Cesare, Carlo Masciocchi
Objectives The objective of this study was to evaluate whether proton magnetic resonance spectroscopy and perfusion magnetic resonance imaging (MRI) are able to increase diagnostic accuracy in the follow-up of brain gliomas, identifying the progression of disease before it becomes evident in the standard MRI; also to evaluate which of the two techniques has the best diagnostic accuracy. Methods Eighty-three patients with cerebral glioma (50 high-grade gliomas (HGGs), 33 low-grade gliomas (LGGs)) were retrospectively enrolled...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28620416/antiphospholipid-syndrome-multiple-manifestations-in-a-single-patient-a-high-suspicion-is-still-needed
#2
Uroosa Ibrahim, Shiksha Kedia, Gwenalyn Garcia, Jean Paul Atallah
Antiphospholipid Syndrome (APS) is an autoimmune disorder with clinical and laboratory features of vascular thrombosis, pregnancy loss, and persistent antiphospholipid antibodies (aPLs). The pathophysiology is thought to involve the activation of endothelial cells, monocytes, platelets, and complement by aPLs. Disease can range from asymptomatic to rapidly fatal catastrophic APS. We present a case of a 34-year-old male referred for pancytopenia and splenomegaly. On examination, he had decreased sensation and 4/5 power in the left upper extremity...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28596947/molecular-mechanisms-of-hypoxia-in-cancer
#3
REVIEW
Amarnath Challapalli, Laurence Carroll, Eric O Aboagye
PURPOSE: Hypoxia is a condition of insufficient oxygen to support metabolism which occurs when the vascular supply is interrupted, or when a tumour outgrows its vascular supply. It is a negative prognostic factor due to its association with an aggressive tumour phenotype and therapeutic resistance. This review provides an overview of hypoxia imaging with Positron emission tomography (PET), with an emphasis on the biological relevance, mechanism of action, highlighting advantages, and limitations of the currently available hypoxia radiotracers...
2017: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28516076/primary-central-nervous-system-vasculitis-mimicking-a-cortical-brain-tumor-a-case-report
#4
Joo-Seok Lee, Tae-Young Jung, Kyung-Hwa Lee, Seul-Kee Kim
We report a case of primary central nervous system vasculitis (PCNSV) mimicking a cortical brain tumor. A 25-year-old woman presented with a 2-week history of headache and transient right hemiparesis. Brain magnetic resonance imaging (MRI) revealed a cortical-involving lesion on the left frontal lobe. The 6-cm sized lesion showed low signal intensity on T1-weighted images and high signal intensity on T2-weighted images. The lesion had continual linear enhancement on the subcortical white matter and leptomeninges...
April 2017: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/28474868/effects-of-drop-set-resistance-training-on-acute-stress-indicators-and-long-term-muscle-hypertrophy-and-strength
#5
Julius Fink, Brad J Schoenfeld, Naoki Kikuchi, Koichi Nakazato
BACKGROUND: We investigated the effects of 2 different resistance training (RT) protocols on muscle hypertrophy and strength. The first group (n = 8) performed a single drop set (DS) and the second group (n = 8) performed 3 sets of conventional RT (normal set, NS). METHODS: Eight young men in each group completed 6 weeks of RT. Muscle hypertrophy was assessed via magnetic resonance imaging (MRI) and strength via 12 RM tests before and after the 6 weeks. Acute stress markers such as muscle thickness (MT), blood lactate (BL), maximal voluntary contraction (MVC), heart rate (HR) and rating of perceived exertion (RPE) before and after one bout of RT...
April 26, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28441825/-progressive-cavitating-leukoencephalopathy-four-cases-and-literatures-review
#6
C H Ren, F Fang, H Cheng, C H Ding, C H Chen, Y J Zhang, D M Shen
Objective: To analyze the clinical and genetic features of progressive cavitating leukoencephalopathy (PCL). Method: The data of clinical and genetic features of 4 PCL patients diagnosed by Beijing Children's Hospital between January 2015 and January 2016 were analyzed. The cases with complete clinical data retrieved on literature search at China National Knowledge Infrastructure, Wanfang Data Knowledge Service Platform and PubMed (up to August 2016) by using search terms of"NDUFV1" ,"NDUFS1" , or"leukoencephalopathy" , were summarized...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28431197/serum-c-reactive-protein-procalcitonin-and-lactate-dehydrogenase-for-the-diagnosis-of-pancreatic-necrosis
#7
REVIEW
Oluyemi Komolafe, Stephen P Pereira, Brian R Davidson, Kurinchi Selvan Gurusamy
BACKGROUND: The treatment of people with pancreatic necrosis differs from that of people with oedematous pancreatitis. It is important to know the diagnostic accuracy of serum C-reactive protein (CRP), serum procalcitonin, and serum lactate dehydrogenase (LDH) as a triage test for the detection of pancreatic necrosis in people with acute pancreatitis, so that an informed decision can be made as to whether the person with pancreatic necrosis needs further investigations such as computed tomography (CT) scan or magnetic resonance imaging (MRI) scan and treatment for pancreatic necrosis started...
April 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28424764/diffusion-tensor-imaging-colour-mapping-threshold-for-identification-of-ventilation-induced-brain-injury-after-intrauterine-inflammation-in-preterm-lambs
#8
Dhafer M Alahmari, Beatrice Skiöld, Samantha K Barton, Ilias Nitsos, Courtney McDonald, Suzanne L Miller, Valerie Zahra, Robert Galinsky, Qizhu Wu, Michael John Farrell, Timothy J Moss, Stuart B Hooper, James T Pearson, Graeme R Polglase
PURPOSE: The aim of this study is to examine whether advanced magnetic resonance imaging (MRI) techniques can detect early brain injury caused by intrauterine inflammation and inappropriate initial respiratory support in preterm lambs. HYPOTHESIS: Neuropathology caused by intrauterine inflammation is exacerbated by mechanical ventilation at birth and is detectable with advanced MRI techniques. METHODS: Pregnant ewes received intra-amniotic lipopolysaccharide (LPS) 7 days prior to delivery at ~125 days of gestation (85% of gestation), whereupon lambs were delivered and randomised to receive an injurious (LPS + INJ, n = 6) or protective (LPS + PROT, n = 6) ventilation strategy...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28402605/biotin-thiamine-responsive-basal-ganglia-disease-identification-of-a-pyruvate-peak-on-brain-spectroscopy-novel-mutation-in-slc19a3-and-calculation-of-prevalence-based-on-allele-frequencies-from-aggregated-next-generation-sequencing-data
#9
Carlos R Ferreira, Matthew T Whitehead, Eyby Leon
Biotin-thiamine responsive basal ganglia disease is an inborn error of metabolism caused by mutations in SLC19A3, encoding a transporter of thiamine across the plasma membrane. We report a novel mutation identified in the homozygous state in a patient with typical brain MRI changes. In addition, this patient had markedly elevated CSF pyruvate, a low lactate-to-pyruvate molar ratio, and an abnormal pyruvate peak at 2.4 ppm on brain magnetic resonance spectroscopy. Using aggregated exome sequencing data, we calculate the carrier frequency of mutations in SLC19A3 as 1 in 232 individuals in the general population, for an estimated prevalence of the disease of approximately 1 in 215,000 individuals...
June 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28394085/dual-echo-epi-sequence-for-integrated-distortion-correction-in-3d-time-resolved-hyperpolarized-13-c-mri
#10
Benjamin J Geraghty, Justin Y C Lau, Albert P Chen, Charles H Cunningham
PURPOSE: To provide built-in off-resonance correction in time-resolved, volumetric hyperpolarized (13) C metabolic imaging by implementing a novel dual-echo 3D echo-planar imaging (EPI) sequence and reconstruction. METHODS: A spectral-spatial pulse for single-resonance excitation followed by a dual-echo 3D EPI readout was implemented to provide 64 × 8 × 6 cm(3) coverage at 5 × 5 × 5 mm(3) nominal resolution. Multiple sources of EPI distortions were encoded using a multi-echo (1) H EPI reference scan...
April 10, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28388738/riboflavin-responsive-multiple-acyl-coa-dehydrogenase-deficiency-associated-with-hepatoencephalomyopathy-and-white-matter-signal-abnormalities-on-brain-mri
#11
Päivi Vieira, Päivi Myllynen, Marja Perhomaa, Hannu Tuominen, Riikka Keski-Filppula, Seppo Rytky, Leila Risteli, Johanna Uusimaa
Multiple acyl-CoA dehydrogenase deficiency (MADD) is a rare inborn error of metabolism affecting both fatty acid and amino acid oxidation. It can manifest at any age, but riboflavin-responsiveness has mainly been described in less severely affected patients. We describe an infant with severe MADD presenting with profound hypotonia and hepatomegaly. Treatment with riboflavin improved his muscle strength, liver size, and biochemical markers. A homozygous mutation of electron transfer flavoprotein dehydrogenase (ETFDH) was found...
April 7, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28386017/multinuclear-nmr-and-mri-reveal-an-early-metabolic-response-to-mtor-inhibition-in-sarcoma
#12
Valentina Di Gialleonardo, Hannah N Aldeborgh, Vesselin Miloushev, Kelly M Folkers, Kristin Granlund, William D Tap, Jason S Lewis, Wolfgang A Weber, Kayvan R Keshari
Biomarkers predicting rapalog responses in sarcomas where PI3K and mTOR are often hyperactivated could improve the suitable recruitment of responsive patients to clinical trials. PI3K/mTOR pathway activation drives energy production by regulating anaerobic glycolysis in cancer cells, suggesting a route toward a monitoring strategy. In this study, we took a multimodality approach to evaluate the phenotypic effects and metabolic changes that occur with inhibition of the PI3K/mTOR pathway. Its central role in regulating glycolysis in human sarcomas was evaluated by short- and long-term rapamycin treatment in sarcoma cell lines...
June 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28378140/management-of-non-hodgkin-lymphoma-icmr-consensus-document
#13
Nirav Thacker, Sameer Bakhshi, Girish Chinnaswamy, Tushar Vora, Maya Prasad, Deepak Bansal, Sandeep Agarwala, Gauri Kapoor, Venkatraman Radhakrishnan, Siddharth Laskar, Tanvir Kaur, G K Rath, Rupinder Singh Dhaliwal, Brijesh Arora
Hitherto poor outcomes, paucity of data and heterogeneity in International approach to Pediatric NHL (Non-Hodgkin Lymphoma) prompted the need for guidelines for Indian population with vast variability in access, affordability and infrastructure across the country. These guidelines are based on consensus among the experts and best available evidence applicable to Indian setting. Evaluation of NHL should consist of easily doable and rapid tissue diagnosis (biopsy or flow cytometry of peripheral blood/malignant effusions), St Jude/IPNHLSS (International Pediatric Non-Hodgkin Lymphoma Staging System) and risk grouping with CSF (Cerebro-spinal fluid), bone marrow, whole body imaging [CECT (Contrast enhanced computerized tomography) ± MRI (Magnetic resonance imaging)] and blood investigations for LDH (Lactate dehydrogenase), TLS (Tumor lysis syndrome) and organ functions...
May 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28355722/-a-clinical-analysis-of-5-patients-with-infratentorial-primary-angiitis-of-central-nervous-system
#14
L J Peng, H R Qian, L L Mao, D Y Xia, X K Qi
Objective: To explore the clinical characteristics of infratentorial primary angiitis in central nervous system(PACNS). Methods: A total of 5 cases diagnosed as infratentorial PACNS in the neurology department of Navy General Hospital of PLA in 2015 were enrolled in the study. The clinical, imaging and pathological data were collected and analyzed. Results: All the 5 cases were male with the median onset age of thirty-four. Five cases presented with dizziness, two with headache, three with walking unstable, two with facial numbness and one with dysarthria...
April 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28336821/hyperbaric-oxygen-therapy-reduces-renal-lactate-production
#15
Thomas S Nørlinger, Per Mose Nielsen, Haiyun Qi, Emmeli Mikkelsen, Kasper Hansen, Nikolaj H Schmidt, Michael Pedersen, Peter Agger, Fredrik Palm, Christoffer Laustsen
Intrarenal hypoxia is an acknowledged factor contributing to the development of diabetic nephropathy. Hyperbaric oxygen (HBO) therapy is a well-known adjuvant treatment for several medical conditions, such as decompression sickness, infections, and wound healing. The underlying metabolic response of HBO is largely unknown. In this study, we investigated the effect of HBO on the intrarenal metabolic alteration in diabetes. Hyperpolarized [1-(13)C]pyruvate MRI was performed to assess intrarenal energy metabolism in normoglycemic controls and short-term (2 weeks) streptozotocin-induced diabetic rats with and without HBO for five consecutive days...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28331947/-magnetic-resonance-spectroscopy-of-brain-tumors
#16
P Ditter, E Hattingen
BACKGROUND: Conventional magnetic resonance imaging (MRI) under consideration of clinical information enables the correct diagnosis and therapy for the majority of cerebral space-occupying lesions. Some important differential diagnoses, e. g. low vs. high-grade tumors, require additional MRI methods. OBJECTIVE: This article critically discusses the importance of magnetic resonance spectroscopy ((1)H-MRS) in brain tumors. MATERIAL AND METHODS: The concentration of normal and pathological brain metabolites can be non-invasively measured by (1)H-MRS...
June 2017: Der Radiologe
https://www.readbyqxmd.com/read/28321344/pituitary-adenoma-and-hyperprolactinemia-accompanied-by-idiopathic-granulomatous-mastitis
#17
Sebahattin Destek, Vahit Onur Gul, Serkan Ahioglu, Kursat Rahmi Serin
Idiopathic granulomatous mastitis (IGM) is a rare chronic inflammatory disease of the breast, and its etiology remains not fully elucidated. IGM is observed more often in patients with autoimmune disease. Hyperprolactinemia is observed during pregnancy, lactation, and a history of oral contraceptive use. A 39-year-old patient with no history of oral contraceptive use presented with complaints such as redness, pain, and swelling in her left breast. Ultrasound and magnetic resonance imaging (MRI) revealed a suspicious inflamed mass lesion...
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/28272754/hyperpolarized-%C3%AE-1-13-c-gluconolactone-as-a-probe-of-the-pentose-phosphate-pathway
#18
Karlos X Moreno, Crystal E Harrison, Matthew E Merritt, Zoltan Kovacs, Craig R Malloy, A Dean Sherry
The pentose phosphate pathway (PPP) is thought to be upregulated in trauma (to produce excess NADPH) and in cancer (to provide ribose for nucleotide biosynthesis), but simple methods for detecting changes in flux through this pathway are not available. MRI of hyperpolarized (13) C-enriched metabolites offers considerable potential as a rapid, non-invasive tool for detecting changes in metabolic fluxes. In this study, hyperpolarized δ-[1-(13) C]gluconolactone was used as a probe to detect flux through the oxidative portion of the pentose phosphate pathway (PPPox ) in isolated perfused mouse livers...
March 8, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28228791/two-cases-of-pregnancy-and-lactation-associated-osteoporosis-successfully-treated-with-denosumab
#19
Ariel Sánchez, María Belén Zanchetta, Karina Danilowicz
Case 1. A 35-year-old woman in the 8(th) month of her first pregnancy suffered acute lumbar pain that persisted for 4 months. In the 5(th) month postpartum an acute increase in the low back pain led to a MRI which showed recent deformity in L1 and deformities of undetermined time of evolution in L2, L4, and L5. Laboratory evaluation did not reveal metabolic derangements. She had low bone mineral density (BMD, DXA) and severe deterioration of the microarchitecture of distal appendicular bone (HR-pQCT). Kyphoplasty of all 4 vertebrae was performed in 2 stages, and treatment with subcutaneous denosumab, 60 mg every 6 months, was begun...
September 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28225569/hepatic-alanine-differentiates-nonalcoholic-steatohepatitis-from-simple-steatosis-in-humans-and-mice-a-proton-mr-spectroscopy-study-with-long-echo-time
#20
Tae-Hoon Kim, Hong Young Jun, Ki-Jong Kim, Young Hwan Lee, Myeung Su Lee, Keum Ha Choi, Ki Jung Yun, Yong Yeon Jeong, Chung Hwan Jun, Eun Young Cho, Kwon-Ha Yoon
PURPOSE: To evaluate the hepatic metabolic alterations in nonalcoholic fatty liver disease (NAFLD) by using (1) H-MRS (proton magnetic resonance spectroscopy) with long echo time and to test the reproducibility of human study in an animal model. Liver biopsy is the gold standard for diagnosing NAFLD but with practical constraints. (1) H-MRS allows in vivo assessment of hepatocellular metabolism and has shown potential for biochemical differentiation in diffuse liver disease. MATERIALS AND METHODS: In all, 32 subjects (11 patients with nonalcoholic steatohepatitis [NASH], 15 with simple steatosis [SS], and six healthy controls) were studied...
February 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
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