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https://www.readbyqxmd.com/read/28934119/integrity-of-cerebellar-fastigial-nucleus-intrinsic-neurons-is-critical-for-the-global-ischemic-preconditioning
#1
Eugene V Golanov, Angelique S Regnier-Golanov, Gavin W Britz
Excitation of intrinsic neurons of cerebellar fastigial nucleus (FN) renders brain tolerant to local and global ischemia. This effect reaches a maximum 72 h after the stimulation and lasts over 10 days. Comparable neuroprotection is observed following sublethal global brain ischemia, a phenomenon known as preconditioning. We hypothesized that FN may participate in the mechanisms of ischemic preconditioning as a part of the intrinsic neuroprotective mechanism. To explore potential significance of FN neurons in brain ischemic tolerance we lesioned intrinsic FN neurons with excitotoxin ibotenic acid five days before exposure to 20 min four-vessel occlusion (4-VO) global ischemia while analyzing neuronal damage in Cornu Ammoni area 1 (CA1) hippocampal area one week later...
September 21, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28930850/evaluation-of-acute-normovolemic-hemodilution-in-patients-undergoing-intracranial-meningioma-resection-a-quasi-experimental-trial
#2
Lei Yang, Hui-Hui Wang, Fu-Sheng Wei, Long-Xian Ma
The aim of this study was to evaluate the safety of acute normovolemic hemodilution (ANH) for patients undergoing intracranial meningioma resection.Eighty patients (aged 48-65 years) with American Society of Anesthesiologists physical status I-II undergoing intracranial meningioma resection were included in this prospective observational study. The patients were randomly divided into group A (ANH group), which underwent a combination of ANH and intraoperative cell salvage (ICS), and group B (control group), which underwent ICS alone...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28923277/animal-models-of-ischaemic-stroke-and-characterisation-of-the-ischaemic-penumbra
#3
REVIEW
Christopher McCabe, Mariana M Arroja, Emma Reid, I Mhairi Macrae
Over the past forty years, animal models of focal cerebral ischaemia have allowed us to identify the critical cerebral blood flow thresholds responsible for irreversible cell death, electrical failure, inhibition of protein synthesis, energy depletion and thereby the lifespan of the potentially salvageable penumbra. They have allowed us to understand the intricate biochemical and molecular mechanisms within the 'ischaemic cascade' that initiate cell death in the first minutes, hours and days following stroke...
September 16, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28917705/long-term-retention-of-ecm-hydrogel-after-implantation-into-a-sub-acute-stroke-cavity-reduces-lesion-volume
#4
Harmanvir Ghuman, Madeline Gerwig, Francesca J Nicholls, Jessie Liu, Julia Donnelly, Stephen F Badylak, Michel Modo
Salvaging or functional replacement of damaged tissue caused by stroke in the brain remains a major therapeutic challenge. In situ gelation and retention of a hydrogel bioscaffold composed of 8 mg/mL extracellular matrix (ECM) can induce a robust invasion of cells within 24 hours and potentially promote a structural remodeling to replace lost tissue. Herein, we demonstrate a long-term retention of ECM hydrogel within the lesion cavity. A decrease of approximately 32% of ECM volume is observed over 12 weeks...
September 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28917600/atp-alters-protein-folding-and-function-of-escherichia-coli-uridine-phosphorylase
#5
Yi-Kai Liu, Tzu-Hsuan Lin, Pei-Fen Liu
Uridine phosphorylase is one of the critical enzymes in the pyrimidine salvage pathway. Cells regenerate uridine for nucleotide metabolism by incorporating uracil with ribose-1-phosphate with this enzyme. Recent studies indicate that Escherichia coli uridine phosphorylase is destabilized in the presence of ATP. However, the mechanism underlying the destabilization process and its influence on uridine phosphorylase function remain to be established. Here, we comprehensively investigated the effects of ATP on protein folding and function of Escherichia coli uridine phosphorylase...
September 13, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28915686/evaluation-on-efficacy-and-safety-of-the-addition-of-x-knife-therapy-to-gefitinib-in-nsclc-patients-with-symptomatic-brain-metastases
#6
Linbo Cai, Xiaoguang Qiu, Haihong Yang, Mingyao Lai, Changguo Shan, Weiping Hong, Juan Li, Longhui Luo, Ping Zhang, Lichao Wang
BACKGROUND: Stereotactic radiosurgery (SRS) is a widely used therapy for brain metastases(BMs) in Non-small cell lung cancer(NSCLC). However, its role in symptomatic patients with EGFR mutation remains unclear. We have retrospectively reviewed the clinical data of patients with symptomatic BMs whom received SRS as a salvage approach and concurrent gifitinib therapy. METHODS: Seven patients with primary NSCLC, symptomatic BMs, and EGFR mutation were identified in a retrospective review of patients treated with SRS using X-knife at Guangdong 999 Brain Hospital between 1 January 2012 and 31 August 2014...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28911074/beyond-first-line-non-anthracycline-based-chemotherapy-for-extranodal-nk-t-cell-lymphoma-clinical-outcome-and-current-perspectives-on-salvage-therapy-for-patients-after-first-relapse-and-progression-of-disease
#7
S H Lim, J Y Hong, S T Lim, H Hong, J Arnoud, W Zhao, D H Yoon, T Tang, J Cho, S Park, Y H Ko, S J Kim, C Suh, T Lin, W S Kim
Background: Current standard treatment, including non-anthracycline-based chemotherapy and optimal combining of radiotherapy, has dramatically improved outcomes of patients with extranodal natural killer/T-cell lymphoma (ENKTL) during the last decade. This study was conducted to investigate the clinical outcome of ENKTL patients with relapsed or progressive disease after initial current standard therapy. Patients and methods: We retrospectively reviewed patients diagnosed with ENKTL at six centers in four countries (China, France, Singapore, and South Korea) from 1997 to 2015 and analyzed 179 patients who had relapsed or progressed after initial current standard therapy...
September 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28906073/salvage-radiotherapy-for-regional-lymph-node-oligo-recurrence-after-radical-surgery-of-non-small-cell-lung-cancer
#8
Ki Ho Seol, Jeong Eun Lee, Joon Yong Cho, Deok Heon Lee, Yangki Seok, Min Kyu Kang
BACKGROUND: Currently, evidence-based guidelines for salvage therapy to treat mediastinal lymph node (LN) oligo-recurrence in post-resection non-small cell lung cancer (NSCLC) are limited. In patients previously treated by surgery without irradiation, radiotherapy (RT) might be safely utilized. We evaluate the clinical outcomes of salvage RT for patients with LN oligo-recurrence that developed after radical surgery for NSCLC. METHODS: Thirty-one patients with stage I-IIIA NSCLC who developed regional LN oligo-recurrence between 2008 and 2013 were reviewed...
September 14, 2017: Thoracic Cancer
https://www.readbyqxmd.com/read/28904384/targeting-the-vulnerability-to-nad-depletion-in-b-cell-acute-lymphoblastic-leukemia
#9
S Takao, W Chien, V Madan, D-C Lin, L-W Ding, Q-Y Sun, A Mayakonda, M Sudo, L Xu, Y Chen, Y-Y Jiang, S Gery, M Lill, E Park, W Senapedis, E Baloglu, M Müschen, H P Koeffler
Although substantial progress has been made in the treatment of B-cell acute lymphoblastic leukemia (B-ALL), the prognosis of patients with either refractory or relapsed B-ALL remains dismal. Novel therapeutic strategies are needed to improve the outcome of these patients. KPT-9274 is a novel dual inhibitor of p21-activated kinase 4 (PAK4) and nicotinamide phosphoribosyltransferase (NAMPT). PAK4 is a serine/threonine kinase, which regulates a variety of fundamental cellular processes. NAMPT is a rate-limiting enzyme in the salvage biosynthesis pathway of nicotinamide adenine dinucleotide (NAD), which plays a vital role in energy metabolism...
September 14, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28903447/locoregionally-recurrent-head-and-neck-squamous-cell-carcinoma-incidence-survival-prognostic-factors-and-treatment-outcomes
#10
Jer-Hwa Chang, Chia-Che Wu, Kevin Sheng-Po Yuan, Alexander T H Wu, Szu-Yuan Wu
PURPOSE: For locoregionally recurrent head and neck squamous cell carcinoma (HNSCC), appropriate therapeutic decisions remain unclear. We examined the treatment outcomes of a national cohort to determine suitable treatments for and prognostic factors in patients with locoregionally recurrent HNSCCs at different stages and sites. PATIENTS AND METHODS: We analyzed data of >20-year-old patients with HNSCC at American Joint Committee on Cancer clinical stages I-IV without metastasis from Taiwan National Health Insurance and cancer registry databases...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28894694/evaluation-of-partial-breast-reirradiation-with-intraoperative-radiotherapy-after-prior-thoracic-radiation-a-single-institution-report-of-outcomes-and-toxicity
#11
Christine Chin, Priya Jadeja, Bret Taback, David P Horowitz, Sheldon M Feldman, Richard Ha, Eileen P Connolly
INTRODUCTION: Mastectomy is the current standard of care for ipsilateral breast tumor recurrences after prior whole breast irradiation (WBI). We report our single-institution experience with breast-conserving surgery (BCS) followed by intraoperative radiotherapy (IORT) as an alternative to salvage mastectomy for new or recurrent breast cancers that develop in the setting of prior thoracic radiation. METHODS: We performed an IRB-approved retrospective review of patients treated with breast IORT between September 2013 and November 2016...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28893433/effects-of-remote-ischemic-preconditioning-in-patients-with-concentric-myocardial-hypertrophy-a-randomized-controlled-trial-with-molecular-insights
#12
Young Song, Jong Wook Song, Sak Lee, Ji-Hae Jun, Young-Lan Kwak, Jae-Kwang Shim
BACKGROUND: Efficacy of remote ischemic preconditioning (RIPC) for cardioprotection in cardiac surgery is controversial. We aimed to evaluate the clinical and molecular effects of RIPC on the concentrically hypertrophied myocardium. METHODS: Seventy-two aortic stenosis patients receiving aortic valve replacement (AVR) under sevoflurane anesthesia were randomly allocated to RIPC (3cycles of 5-min inflation [300mmHg] and deflation on the left arm) or control (deflated cuff placement) group...
September 6, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28892259/cellulose-production-is-coupled-to-sensing-of-the-pyrimidine-biosynthetic-pathway-via-c-di-gmp-production-by-the-dgcq-protein-of-escherichia-coli
#13
Elio Rossi, Sara Motta, Alessandro Aliverti, Federica Cossu, Louise Gourlay, Pierluigi Mauri, Paolo Landini
Production of cellulose, a stress response-mediated process in enterobacteria, is modulated in Escherichia coli by the activity of the two pyrimidine nucleotide biosynthetic pathways, namely, the de novo biosynthetic pathway, and the salvage pathway, which relies on the environmental availability of pyrimidine nitrogenous bases. We had previously reported that prevalence of the salvage over the de novo pathway triggers cellulose production via synthesis of the second messenger c-di-GMP by the DgcQ (YedQ) diguanylate cyclase...
September 11, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28892087/durable-remission-with-salvage-decitabine-and-donor-lymphocyte-infusion-dli-for-relapsed-early-t-cell-precursor-all
#14
F E L Chaer, N Holtzman, E Binder, N C Porter, Z N Singh, M Koka, A P Rapoport, A Emadi
No abstract text is available yet for this article.
September 11, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28892086/allogeneic-stem-cell-transplantation-and-subsequent-treatments-as-a-comprehensive-strategy-for-long-term-survival-of-multiple-myeloma-patients
#15
V Montefusco, A Mussetti, F Rezzonico, F Maura, M Pennisi, C de Philippis, M Capecchi, P Corradini
We evaluated 71 patients treated with allogeneic hematopoietic cell transplantation (allo-HCT) for multiple myeloma (MM). Forty-three patients (61%) received allo-HCT after the first line of therapy. Fifty-eight patients (82%) had chemosensitive disease at the time of allo-HCT. A HLA-matched related or unrelated donor was available for 68 patients (96%). Non-myeloablative or reduced-intensity conditioning regimen and peripheral blood hematopoietic cells as a graft source were used in most patients. The cumulative incidence of grade II-IV acute GVHD at day +100 and chronic GVHD at 5 years was 13% (95% CI 7-23%) and 35% (95% CI 24-46), respectively...
September 11, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28891266/analysis-of-outcomes-achieved-with-squamous-cell-carcinomas-of-the-anus-in-a-single-university-hospital-over-the-last-two-decades-clinical-response-rate-relapse-and-survival-of-190-patients
#16
Gianpiero Gravante, James Andrew Stephenson, Mohamed Elshaer, Ahmed Osman, Subramaniam Vasanthan, Joseph H Mullineux, Mohamed Akil Dilawar Gani, David Sharpe, Justin Yeung, Michael Norwood, Andrew Miller, Kirsten Boyle, David Hemingway
BACKGROUND AND OBJECTIVES: We reviewed our series of anal squamous cell carcinomas (ASCC) treated over the last two decades. METHODS: ASCC patients undergoing treatment at the Leicester Royal Infirmary between 1998 and 2016 were selected. Age, gender, pathological tumor characteristics, treatment adopted, the overall survival (OS), cancer-specific survival (CSS), and disease-free survival (DFS) at 5-year follow-up were recorded and calculated. RESULTS: A total of 190 ASCC were reviewed, of these 64...
September 10, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28891087/elucidation-of-salvage-laryngectomy-pathologic-and-clinical-variables-to-guide-further-treatment-intensification-investigation
#17
Joseph Scharpf, Matthew Ward, David Adelstein, Shlomo Koyfman, Mingsi Li
OBJECTIVE/HYPOTHESIS: There are limited treatment options beyond surgical salvage for patients who fail nonoperative treatment for laryngeal squamous cell carcinoma. In this study, we examine the failure patterns after surgical salvage and the potential pathologic and clinical prognostic variables that might guide further postoperative intensification investigation. STUDY DESIGN: Retrospective analysis at a tertiary academic referral center. METHODS: From an institutional review board-approved institutional head and neck cancer registry, a consecutive series of 147 patients who underwent salvage laryngectomy for squamous cell cancer recurrence or persistence after radiotherapy with or without chemotherapy between May 1995 and May 2016 were identified...
September 11, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28882584/prophylactic-cranial-irradiation-pci-vs-active-mri-surveillance-for-small-cell-lung-cancer-the-case-for-equipoise
#18
REVIEW
Chad G Rusthoven, Brian D Kavanagh
Prophylactic cranial irradiation (PCI) for small-cell lung cancer (SCLC) offers a consistent reduction in the incidence of brain metastases (BM), at the cost of measurable toxicity to neurocognitive function and quality of life in the setting of characteristic pathologic changes to the brain. The sequelae of PCI have historically been justified by the perception of an overall survival (OS) advantage specific to SCLC. This rationale has now been challenged by a randomized trial in extensive-stage SCLC demonstrating equivalent progression-free survival and a trend toward improved OS with PCI omission in the context of modern MRI staging, surveillance, and salvage therapy...
September 4, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28877980/nad-metabolism-fuels-human-and-mouse-intestinal-inflammation
#19
Romana R Gerner, Victoria Klepsch, Sophie Macheiner, Kathrin Arnhard, Timon E Adolph, Christoph Grander, Verena Wieser, Alexandra Pfister, Patrizia Moser, Natascha Hermann-Kleiter, Gottfried Baier, Herbert Oberacher, Herbert Tilg, Alexander R Moschen
OBJECTIVE: Nicotinamide phosphoribosyltransferase (NAMPT, also referred to as pre-B cell colony-enhancing factor or visfatin) is critically required for the maintenance of cellular nicotinamide adenine dinucleotide (NAD) supply catalysing the rate-limiting step of the NAD salvage pathway. NAMPT is strongly upregulated in inflammation including IBD and counteracts an increased cellular NAD turnover mediated by NAD-depleting enzymes. These constitute an important mechanistic link between inflammatory, metabolic and transcriptional pathways and NAD metabolism...
September 6, 2017: Gut
https://www.readbyqxmd.com/read/28875957/transition-from-tumor-tissue-to-bone-marrow-in-patients-with-appendicular-osteosarcoma-after-neoadjuvant-chemotherapy
#20
Zhi-Ping Deng, Bao-Yue Liu, Yang Sun, Tao Jin, Bin Li, Yi Ding, Xiao-Hui Niu
Background: Limb-salvage surgery is the standard procedure for the treatment of appendicular osteosarcoma. Precise resection is the trend in limb-salvage surgery. The aim of this study was to evaluate a large series of cases to identify the histological relationship between the tumor and marrow and determine the intramedullary transition type and width from the tumor to normal marrow in patients with osteosarcoma after neoadjuvant chemotherapy. Methods: One hundred and six osteosarcoma specimens were evaluated...
September 20, 2017: Chinese Medical Journal
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