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https://www.readbyqxmd.com/read/28110168/ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry-uhplc-ms-ms-for-determination-of-ghb-precursors-and-metabolites-in-different-specimens-application-to-clinical-and-forensic-cases
#1
Francesco Paolo Busardò, Chrystalla Kyriakou, Emilia Marchei, Roberta Pacifici, Daniel Sejer Pedersen, Simona Pichini
Gamma-hydroxybutyric acid (GHB) acts as a precursor and metabolite of the inhibitory central nervous system (CNS) neurotransmitter gamma-aminobutyric acid (GABA). Sodium salt of GHB has been used as a medication for narcolepsy and alcohol withdrawal. Moreover, GHB and its precursor gamma-butyrolactone (GBL), are illegal recreational drugs of abuse. A procedure based on ultra-high-performance liquid chromatography tandem mass spectrometry has been developed and validated in plasma, urine, cerebrospinal fluid and hair for acute and chronic exposure to GHB and in seized preparations coming from black market...
January 9, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28109794/mir-29a-expressions-in-peripheral-blood-mononuclear-cell-and-cerebrospinal-fluid-diagnostic-value-in-patients-with-pediatric-tuberculous-meningitis
#2
Deng Pan, Miao Pan, Yu-Ming Xu
To evaluate the value of miR-29a expression in peripheral blood mononuclear cell (PBMC) and cerebrospinal fluid (CSF) in the diagnosis of pediatric tuberculous meningitis (TBM). Our study enrolled 112 children with TBM and 130 healthy children, from which PBMC and CSF were collected. The quantitative real-time polymerase chain reaction (qRT-PCR) was used to measure the expression of miR-29a in PBMC and CSF, and then analyze the diagnostic value. Compared with control group, the miR-29a expressions in PBMC and CSF were increased in TBM children (both P <0...
January 18, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28109490/risk-factors-for-cerebrospinal-fluid-leak-in-pediatric-patients-undergoing-endoscopic-endonasal-skull-base-surgery
#3
Amanda L Stapleton, Elizabeth C Tyler-Kabara, Paul A Gardner, Carl H Snyderman, Eric W Wang
OBJECTIVES: To determine the risk factors associated with cerebrospinal fluid (CSF) leak following endoscopic endonasal surgery (EES) for pediatric skull base lesions. METHODS: Retrospective chart review of pediatric patients (ages 1 month to 18 years) treated for skull base lesions with EES from 1999 to 2014. Five pathologies were reviewed: craniopharyngioma, clival chordoma, pituitary adenoma, pituitary carcinoma, and Rathke's cleft cyst. Fisher's exact tests were used to evaluate the different factors to determine which had a statistically higher risk of leading to a post-operative CSF leak...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28109263/common-and-uncommon-neurological-manifestations-of-neuroborreliosis-leading-to-hospitalization
#4
Philipp Schwenkenbecher, Refik Pul, Ulrich Wurster, Josef Conzen, Kaweh Pars, Hans Hartmann, Kurt-Wolfram Sühs, Ludwig Sedlacek, Martin Stangel, Corinna Trebst, Thomas Skripuletz
BACKGROUND: Neuroborreliosis represents a relevant infectious disease and can cause a variety of neurological manifestations. Different stages and syndromes are described and atypical symptoms can result in diagnostic delay or misdiagnosis. The aim of this retrospective study was to define the pivotal neurological deficits in patients with neuroborreliosis that were the reason for admission in a hospital. METHODS: We retrospectively evaluated data of patients with neuroborreliosis...
January 21, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28108577/the-efficacy-and-risk-of-cerebrospinal-fluid-drainage-for-thoracoabdominal-aortic-aneurysm-repair-a-retrospective-observational-comparison-between-drainage-and-non-drainage%C3%A2
#5
Junya Sugiura, Hideki Oshima, Tomonobu Abe, Yuji Narita, Yoshimori Araki, Kazuro Fujimoto, Masato Mutsuga, Akihiko Usui
OBJECTIVES: We reviewed our experiences with thoracoabdominal aortic aneurysm (TAAA) repair to assess the efficacy of cerebrospinal fluid drainage (CSFD) to prevent the neurological deficits and complications associated with CSFD. METHODS: Between 2002 and 2015, 118 patients underwent TAAA repair. Seventy-eight patients underwent CSFD for 2.7 ± 1.1 days after surgery. CSFD was not performed for the other 40 patients due to an urgent situation, chronic disseminated intravascular coagulation or anatomical difficulties...
January 20, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28108463/targeting-glioblastoma-with-car-t-cells
#6
(no author information available yet)
CAR T cells targeting IL13Rα2 proved effective against recurrent multifocal leptomeningeal glioblastoma, according to a case report. Direct delivery of the therapy into the cerebrospinal fluid was well tolerated, completely eliminating the patient's brain and spinal tumors for 7.5 months, during which the patient resumed his normal activities.
January 20, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28108398/association-between-butyrylcholinesterase-and-cerebrospinal-fluid-biomarkers-in-alzheimer-s-disease-patients
#7
António José Gabriel, Maria Rosário Almeida, Maria Helena Ribeiro, João Durães, Miguel Tábuas-Pereira, Ana Cristina Pinheiro, Rui Pascoal, Isabel Santana, Inês Baldeiras
The deficit of cholinergic activity is one of the main findings in Alzheimer's disease (AD), and is related to the synthesis of acetylcholine, and the hydrolysing enzymes, acetylcholinesterase and butyrylcholinesterase (BuChE). Together with the Apolipoprotein E-ε4 allele (ApoE-ε4), the BuChE-K variant has been proposed to increase AD risk in certain populations. In addition, this polymorphism has been associated with a lower capacity to attenuate β-amyloid aggregation. In the present study we explored the interaction of the BuChE-K variant with its activity in CSF, conventional AD biomarkers and ApoE genotype...
January 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28108196/homovanillic-acid-in-csf-of-mild-stage-parkinson-s-disease-patients-correlates-with-motor-impairment
#8
Alessandro Stefani, Mariangela Pierantozzi, Enrica Olivola, Salvatore Galati, Rocco Cerroni, Vincenza D'Angelo, Atticus H Hainsworth, Valentina Saviozzi, Ernesto Fedele, Claudio Liguori
In Parkinson's disease (PD), several efforts have been spent in order to find biochemical parameters able to identify the progression of the pathological processes at the basis of the disease. It is already known that advanced PD patients manifesting dyskinesia are featured by the high homovanillic acid (HVA)/dopamine (DA) ratio, suggesting the increased turnover of DA in these patients. Less clear is whether similar changes affect mild and moderate stages of the disease (between 1 and 2.5 of Hoehn & Yahr -H&Y- stage)...
January 18, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28107857/prostatic-abscess-of-klebsiella%C3%A2-pneumonia-complicating-septic-pulmonary-emboli-and-meningitis-a-case-report-and-brief-review
#9
Jai-Wen Liu, Tzu-Chieh Lin, Yao-Tien Chang, Che-An Tsai, Sung-Yuan Hu
Prostatic abscess is a rare entity with an incidence of 0.5%-2.5% in all prostate diseases and usually occurs in the 5th and 6th decades of life with immunocompromised status. Prostatic abscess might be a process of evolution from acute prostatitis. Klebsiella pneumoniae is the leading microorganism in the diabetic patients of prostatic abscess in Taiwan. A 60-year-old diabetic man, with a one-week history of acute bacterial prostatitis was reported in this study, presenting to the emergency department with sudden altered mental status...
January 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28107809/plasma-protein-profiling-for-potential-biomarkers-in-the-early-diagnosis-of-alzheimer-s-disease
#10
Yuki Kitamura, Ryoko Usami, Sahoko Ichihara, Hirotaka Kida, Masayuki Satoh, Hidekazu Tomimoto, Mariko Murata, Shinji Oikawa
OBJECTIVES: Alzheimer's disease (AD) is the most common cause of dementia in elderly persons. Since the pathology of AD develops slowly from a preclinical or early phase into a fully expressed clinical syndrome, at the time of diagnosis the disease has been progressing for many years. To facilitate the early diagnosis of AD, we performed protein profiling of blood in patients with mild AD as defined by the Functional Assessment Staging (FAST) scale. METHODS: Plasma samples from mild AD patients and healthy controls were analyzed using two-dimensional differential gel electrophoresis (2D-DIGE) combined with matrix-assisted laser desorption ionization time-of-flight tandem mass spectrometry (MALDI-TOF/TOF/MS) followed by peptide mass fingerprinting...
January 20, 2017: Neurological Research
https://www.readbyqxmd.com/read/28107236/surgical-technique-for-decompression-of-severe-thoracic-myelopathy-due-to-tuberous-ossification-of-ligamentum-flavum
#11
Ting Wang, Chuqiang Yin, Dechun Wang, Shuzhong Li, Xiaoliang Chen
STUDY DESIGN: Retrospective review. OBJECTIVE: To describe a safe surgical procedure, en bloc resection of the posterior wall of the thoracic canal, for the decompression of severe thoracic myelopathy caused by tuberous ossification of the ligamentum flavum (OLF). SUMMARY OF BACKGROUND DATA: OLF has been widely recognized as a cause of thoracic myelopathy in East Asia. Surgical decompression of thoracic myelopathy caused by OLF is technically demanding...
February 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28106476/quantification-of-hepcidin-25-in-human-cerebrospinal-fluid-using-lc-ms-ms
#12
Constance Delaby, Pauline Bros, Jérôme Vialaret, Amandine Moulinier, Vincent Delatour, Audrey Gabelle, Sylvain Lehmann, Christophe Hirtz
AIM: Hepcidin, the main iron metabolism regulator, can be detected in various biological fluids. Here, we describe a quantitative method of LC-MS/MS to quantify the 25 amino acid isoform of hepcidin (hepcidin-25) in human cerebrospinal fluid (CSF). Results & methodology: Samples were prepared through protein precipitation followed by solid phase extraction (SPE) and injected into a triple-quadrupole mass spectrometer. Validation of our method included determination of LOQ (0.1 ng/ml), repeatability, intermediate precision, recovery and linearity (up to 25 ng/ml)...
January 20, 2017: Bioanalysis
https://www.readbyqxmd.com/read/28105707/binge-drinking-differentially-affects-cortical-and-subcortical-microstructure
#13
Laurel S Morris, Nicholas G Dowell, Mara Cercignani, Neil A Harrison, Valerie Voon
Young adult binge drinkers represent a model for endophenotypic risk factors for alcohol misuse and early exposure to repeated binge cycles. Chronic or harmful alcohol use leads to neurochemical, structural and morphological neuroplastic changes, particularly in regions associated with reward processing and motivation. We investigated neural microstructure in 28 binge drinkers compared with 38 matched healthy controls. We used a recently developed diffusion magnetic resonance imaging acquisition and analysis, which uses three-compartment modelling (of intracellular, extracellular and cerebrospinal fluid) to determine brain tissue microstructure features including neurite density and orientation dispersion index (ODI)...
January 20, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28105214/detection-value-of-tumor-cells-in-cerebrospinal-fluid-in-the-diagnosis-of-meningeal-metastasis-from-lung-cancer-by-immuno-fish-technology
#14
Yuan Lv, Ning Mu, Chunhua Ma, Rong Jiang, Qiaoli Wu, Jinduo Li, Bin Wang, Liwei Sun
To investigate the detection value of tumor cells in cerebrospinal fluid (CSF) in the adjuvant diagnosis of meningeal metastasis from lung cancer by immunofluorescence in situ hybridization (immuno-FISH) technology. The circulating tumor cells (CTCs) in the CSF of 16 patients with meningeal metastasis from lung cancer and 8 with non-tumor diseases in the brain were detected using immuno-FISH technology. The diagnosis of meningeal metastasis from lung cancer was based on neurological symptoms, enhanced magnetic resonance imaging (MRI) scans and CSF cytological examination...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105125/staining-with-two-observational-methods-for-the-diagnosis-of-tuberculous-meningitis
#15
Yueli Zou, Hui Bu, Li Guo, Yajuan Liu, Junying He, Xuedan Feng
Ziehl-Neelsen (Z-N) staining of cerebrospinal fluid (CSF) for acid-fast bacilli (AFB) is the cornerstone of the laboratory diagnosis of tuberculous meningitis (TBM). However, the sensitivity of conventional Z-N staining for the detection of AFB in CSF specimens is suboptimal. The present study aimed to compare the practicality of modified Z-N staining with light microscopy and fluorescence microscopy in the same smear without auramine O. A total of 155 patients with 223 CSF specimens were enrolled and grouped according to the uniform case definition...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104521/endoscopic-versus-microscopic-transsphenoidal-surgery-in-the-treatment-of-pituitary-adenoma-a-systematic-review-and-meta-analysis
#16
Aijun Li, Weisheng Liu, Peicheng Cao, Yuehua Zheng, Zhenfu Bu, Tao Zhou
BACKGROUND: Inconsistent findings have been reported regarding the efficacy and safety of endoscopic and microscopic transsphenoidal surgery for pituitary adenoma. This study aimed to assess the benefits and shortcomings of these surgical methods in patients with pituitary adenoma. METHODS: The electronic databases PubMed, EmBase, and the Cochrane Library were systematically searched, as well as proceedings of major meetings. Eligible studies with retrospective or prospective design that evaluated endoscopic versus microscopic methods in patients with pituitary adenoma were included...
January 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28104259/utility-of-extension-views-in-spondylotic-myelopathy-mimicking-transverse-myelitis
#17
Brittani L Conway, Michelle J Clarke, Timothy J Kaufmann, Eoin P Flanagan
Cervical spondylotic myelopathy is a common cause of myelopathy and may mimic transverse myelitis. We report a 55 year-old lady with subacute myelopathy initially treated with glatiramer acetate for suspected clinically isolated syndrome. MRI head and spine revealed a single short cervical cord T2-hyperintense lesion with enhancement just below a region of moderate stenosis. Cerebrospinal fluid revealed elevated oligoclonal bands. Repeat MRI 7 months later showed persistent enhancement. Dynamic MRI revealed cord compression during extension...
January 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28104185/causes-and-outcomes-of-sepsis-in-southeast-asia-a-multinational-multicentre-cross-sectional-study
#18
(no author information available yet)
BACKGROUND: Improved understanding of pathogens that cause sepsis would aid management and antimicrobial selection. In this study, we aimed to identify the causative pathogens of sepsis in southeast Asia. METHODS: In this multinational multicentre cross-sectional study of community-acquired sepsis and severe sepsis, we prospectively recruited children (age ≥30 days and <18 years) and adults (age ≥18 years) at 13 public hospitals in Indonesia (n=3), Thailand (n=4), and Vietnam (n=6)...
February 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28104020/-retrospective-analysis-of-3-cases-of-complex-nasal-endoscopic-repair-of-patients-with-cerebrospinal-fluid-rhinorrhea
#19
K X Wen, P R Ma, Y H Zhang, J Zhao
No abstract text is available yet for this article.
January 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28104012/-simultaneous-triple-semicircular-canal-plugging-and-cochlear-implantation-in-advanced-meniere-s-disease
#20
D G Zhang, L Xu, Y C Han, Y F Lyu, J F Luo, Y W Li, R J Wang, Z M Fan, H B Wang
Objective: To evaluate the feasibility of combining simultaneous triple semicircular canal plugging (TSCP) and cochlear implantation (CI) to treat vertigo and hearing loss in advanced Meniere's disease(MD) patients, so as to provide an alternative surgical procedure for treating this disorder. Methods: Data from seven patients, who were referred to our hospital and diagnosed with unilateral MD strictly meeting the criteria issued by Chinese Academy of Otolaryngology-Head and Neck Surgery Committee (2006), from Jan...
January 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
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