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https://www.readbyqxmd.com/read/28229450/endogenous-nitric-oxide-formation-in-cardiac-myocytes-does-not-control-respiration-during-%C3%AE-adrenergic-stimulation
#1
Michael Kohlhaas, Alexander G Nickel, Stefanie Bergem, Barbara Casadei, Ulrich Laufs, Christoph Maack
Endothelial nitric oxide (NO) controls cardiac oxygen (O2 ) consumption in a paracrine way by slowing respiration at the mitochondrial electron transport chain. While NO synthases (NOS) are also expressed in cardiac myocytes, it is unclear whether they control respiration in an intracrine way. Furthermore, the existence of a mitochondrial NOS is controversial. Here, by combining fluorescence imaging with electrical field stimulation, the patch-clamp method and knock-out technology, we determined the sources and consequences of intracellular NO formation during workload transitions in isolated murine and guinea pig cardiac myocytes and mitochondria...
February 22, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28208618/the-function-of-the-mitochondrial-calcium-uniporter-in-neurodegenerative-disorders
#2
REVIEW
Yajin Liao, Yuan Dong, Jinbo Cheng
The mitochondrial calcium uniporter (MCU)-a calcium uniporter on the inner membrane of mitochondria-controls the mitochondrial calcium uptake in normal and abnormal situations. Mitochondrial calcium is essential for the production of adenosine triphosphate (ATP); however, excessive calcium will induce mitochondrial dysfunction. Calcium homeostasis disruption and mitochondrial dysfunction is observed in many neurodegenerative disorders. However, the role and regulatory mechanism of the MCU in the development of these diseases are obscure...
February 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28207450/response-to-response-patterns-to-the-electric-stimulation-of-epidural-catheters-in-pregnant-women-a-randomized-controlled-trial-of-uniport-versus-multiport-catheters
#3
Ellis Muggleton, Tuelin Muggleton
No abstract text is available yet for this article.
March 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28203416/learning-curve-and-established-phase-for-uniportal-vats-lobectomies-the-papworth-experience
#4
Benedetta Bedetti, Luca Bertolaccini, Piergiorgio Solli, Marco Scarci
BACKGROUND: Uniportal video-assisted thoracoscopy (VATS) has increasingly gained importance in the thoracic surgery scenario. The use of this technique can reduce postoperative pain and length of stay and gives the surgeon the same operative perspective as open surgery. METHODS: We retrospectively analysed the data of 73 patients who underwent uniportal VATS lobectomies from November 2014 to December 2015 in our institution. We divided the patients in two groups (group 1: first 30 patients vs...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28198506/inhibition-of-mitochondrial-calcium-uptake-1-in-drosophila-neurons
#5
P G M'Angale, B E Staveley
The mitochondrial calcium uptake 1 (MICU1) is a regulatory subunit of the mitochondrial calcium uniporter that plays an important role in calcium sensing. It contains two EF-hand domains that are well conserved across diverse species from protozoa to plants and metazoans. The loss of MICU1 function in mammals is attributed to several neurological disorders that involve movement dysfunction. The CG4495 gene in Drosophila melanogaster was identified as a putative homolog of MICU1 in the HomoloGene database of the National Centre for Biotechnology Information (NCBI)...
February 8, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28194521/the-mitochondrial-ca-2-uniporter-structure-function-and-pharmacology
#6
Jyotsna Mishra, Bong Sook Jhun, Stephen Hurst, Jin O-Uchi, György Csordás, Shey-Shing Sheu
Mitochondrial Ca(2+) uptake is crucial for an array of cellular functions while an imbalance can elicit cell death. In this chapter, we briefly reviewed the various modes of mitochondrial Ca(2+) uptake and our current understanding of mitochondrial Ca(2+) homeostasis in regards to cell physiology and pathophysiology. Further, this chapter focuses on the molecular identities, intracellular regulators as well as the pharmacology of mitochondrial Ca(2+) uniporter complex.
February 14, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28187435/glucose-transporter-glut1-expression-and-clinical-outcome-in-solid-tumors-a-systematic-review-and-meta-analysis
#7
Ji Wang, Chenyang Ye, Cong Chen, Hanchu Xiong, Binbin Xie, Jichun Zhou, Yongxia Chen, Shu Zheng, Linbo Wang
Glucose transporter 1 (GLUT1), the uniporter protein encoded by the SLC2A1 gene, is a key rate-limiting factor in the transport of glucose in cancer cells, and frequently expressed in a significant proportion of human cancers. Numerous studies have reported paradoxical evidence of the relationship between GLUT1 expression and prognosis in solid human tumors. To address this discrepancy, we conducted a thorough search of Pubmed and Web of Science for studies evaluating the expression of GLUT1 and overall survival (OS) and disease-free survival (DFS) in patients with solid cancer from 1993 to April 2016...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28181698/calcium-uptake-via-mitochondrial-uniporter-contributes-to-palmitic-acid-induced-apoptosis-in-mouse-podocytes
#8
Zeting Yuan, Aili Cao, Hua Liu, Henjiang Guo, Yingjun Zang, Yi Wang, Yunman Wang, Hao Wang, Peihao Yin, Wen Peng
Podocytes are component cells of the glomerular filtration barrier, and their loss by apoptosis is the main cause of proteinuria that leads to diabetic nephropathy (DN). Therefore, insights into podocyte apoptosis mechanism would allow a better understanding of DN pathogenesis and thus help develop adequate therapeutic strategies. Here, we investigated the molecular mechanism of palmitic acid-inhibited cell death in mouse podocytes, and found that palmitic acid increased cell death in a dose- and time-dependent manner...
February 9, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28149591/non-intubated-subxiphoid-uniportal-video-assisted-thoracoscopic-thymectomy-using-glasses-free-3d-vision
#9
Long Jiang, Jun Liu, Wenlong Shao, Jingpei Li, Jianxing He
Trans-sternal thymectomy has long been accepted as the standard surgical procedure for thymic masses. Recently, minimally invasive methods, such as video-assisted thoracoscopic surgery (VATS) and, even more recently, non-intubated anesthesia, have emerged. These methods provide advantages including reductions in surgical trauma, postoperative associated pain, and in regards to VATS, provide certain cosmetic benefits. Considering these advantages, we herein present a case of subxiphoid uniportal VATS for thymic mass using a glasses-free 3D thoracoscopic display system...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28149589/unusual-clotted-haemothorax-caused-by-spontaneous-intramural-haematoma-of-the-oesophagus-a-case-report
#10
Chenglin Guo, Jiandong Mei, Pujun Guan, Feng Lin, Qiang Pu, Lunxu Liu
Spontaneous intramural haematoma of the oesophagus (SIHO) is a relatively rare event with benign courses. Most of the patients with SIHO may experience spontaneous healing without complications. We report a case of SIHO with clotted haemothorax. Uniportal video-assisted thoracic surgery (VATS) was successfully applied as a diagnostic and therapeutic method. Although conservative treatment is adequate for the majority of patients with SIHO, uniportal VATS may be a suitable option if there was clotted haemothorax...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28149567/minimalist-video-assisted-thoracic-surgery-biopsy-of-mediastinal-tumors
#11
Federico Tacconi, Paola Rogliani, Benedetto Cristino, Francesco Gilardi, Leonardo Palombi, Eugenio Pompeo
BACKGROUND: Mediastinal tumors often require surgical biopsy to achieve a precise and rapid diagnosis. However, subjects with mediastinal tumors may be unfit for general anesthesia, particularly when compression of major vessels or airways does occur. We tested the applicability in this setting of a minimalist (M) uniportal, video-assisted thoracic surgery (VATS) strategy carried out under locoregional anesthesia in awake patients (MVATS). METHODS: We analyzed in a comparative fashion including propensity score matching, data from a prospectively collected database of patients who were offered surgical biopsy for mediastinal tumors through either MVATS or standard VATS...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28149548/safety-and-feasibility-of-uniportal-video-assisted-thoracoscopic-surgery-for-locally-advanced-non-small-cell-lung-cancer
#12
Junqiang Fan, Jie Yao, Qi Wang, Zhibo Chang
BACKGROUND: Conventional video-assisted thoracoscopic surgery (VATS) lobectomy for locally advanced non-small cell lung cancer (NSCLC) is a feasible and safe surgery in high-volume centers with significant VATS experience. Uniportal VATS lobectomy has been recently been reported to be a promising, less invasive approach. The purpose of this study is to explore the safety and feasibility of uniportal video-assisted thoracoscopic surgery (U-VATS) for the treatment of patients with locally advanced NSCLC...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28134341/identification-and-characterization-of-a-plastidic-adenine-nucleotide-uniporter-osbt1-3-required-for-chloroplast-development-in-the-early-leaf-stage-of-rice
#13
Daoheng Hu, Yang Li, Wenbin Jin, Hanyu Gong, Qiong He, Yangsheng Li
Chloroplast development is an important subject in botany. In this study, a rice (Oryza sativa) mutant exhibiting impairment in early chloroplast development (seedling leaf albino (sla)) was isolated from a filial generation via hybridization breeding. The sla mutant seedlings have an aberrant form of chloroplasts, which resulted in albinism at the first and second leaves; however, the leaf sheath was green. The mutant gradually turned green after the two-leaf stage, and the third leaf was a normal shade of green...
January 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28122540/the-feasibility-and-advantage-of-uniportal-video-assisted-thoracoscopic-surgery-vats-in-pulmonary-lobectomy
#14
Linlin Wang, Dabei Liu, Jibin Lu, Suning Zhang, Xueying Yang
BACKGROUND: Ongoing improvements in technique and instruments for video-assisted thoracoscopic surgery (VATS) have made minimally-invasive uniportal VATS lobectomy a reality. However, the outcomes of the procedure are still under investigation, and at present, uniportal VATS lobectomy is performed infrequently at most hospitals. We have therefore reviewed our outcomes with this procedure in an attempt to validate its safety, efficacy, and feasibility. METHODS: We retrospectively analyzed and compared perioperative data for patients who underwent uniportal, two-port, and traditional three-port VATS lobectomy between January 2015 and December 2015 at our hospital...
January 25, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28115482/mitochondria-maintain-distinct-ca2-pools-in-cone-photoreceptors
#15
Michelle M Giarmarco, Whitney M Cleghorn, Stephanie R Sloat, James B Hurley, Susan E Brockerhoff
: Ca(2+) ions have distinct roles in the outer segment, cell body, and synaptic terminal of photoreceptors. We tested the hypothesis that distinct Ca(2+) domains are maintained by Ca(2+) uptake into mitochondria. Serial block face scanning electron microscopy of zebrafish cones reveals that nearly 100 mitochondria cluster at the apical side of the inner segment, directly below the outer segment. The endoplasmic reticulum surrounds the basal and lateral surfaces of this cluster, but does not reach the apical surface or penetrate into the cluster...
January 23, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28113596/cell-like-p-systems-with-channel-states-and-symport-antiport-rules
#16
Bosheng Song, Linqiang Pan, Mario Perez-Jimenez
Cell-like P systems with symport/antiport rules are inspired by the structure of a cell and the way of communicating substances through membrane channels between neighboring regions. In this work, channel states are introduced into celllike P systems with symport/antiport rules, and we call this variant of communication P systems as cell-like P systems with channel states and symport/antiport rules. In such P systems, at most one channel is established between neighboring regions, each channel associates with one state in order to control communication at each step, and rules are used in a sequential manner: on each channel at most one rule can be used at each step...
August 29, 2016: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28108575/uniportal-thoracoscopic-decortication-for-pleural-empyema-and-the-role-of-ultrasonographic-preoperative-staging%C3%A2
#17
Stefano Bongiolatti, Luca Voltolini, Sara Borgianni, Roberto Borrelli, Giorgia Tancredi, Domenico Viggiano, Alessandro Gonfiotti
OBJECTIVES: The surgical approach to chronic pleural empyema is still controversial. Video-assisted thoracic surgery (VATS) debridement and decortication has shown favourable outcomes, while the uniportal VATS (U-VATS) approach is still anecdotal. We report our experience with ultrasonographic (US) preoperative staging followed by U-VATS decortication for pleural empyema. METHODS: We performed a retrospective analysis of patients who underwent surgical treatment of stage II and stage III pleural empyema from 2012 to 2015...
January 19, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28100752/differential-vulnerability-of-ca1-versus-ca3-pyramidal-neurons-after-ischemia-possible-relationship-to-sources-of-zn2-accumulation-and-its-entry-into-and-prolonged-effects-on-mitochondria
#18
Yuliya V Medvedeva, Sung G Ji, Hong Z Yin, John H Weiss
: Excitotoxic mechanisms contribute to the degeneration of hippocampal pyramidal neurons after recurrent seizures and brain ischemia. However, susceptibility differs, with CA1 neurons degenerating preferentially after global ischemia and CA3 neurons after limbic seizures. Whereas most studies address contributions of excitotoxic Ca(2+) entry, it is apparent that Zn(2+) also contributes, reflecting accumulation in neurons either after synaptic release and entry through postsynaptic channels or upon mobilization from intracellular Zn(2+)-binding proteins such as metallothionein-III (MT-III)...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28091567/quantifying-the-relative-contributions-of-different-solute-carriers-to-aggregate-substrate-transport
#19
Mehdi Taslimifar, Lalita Oparija, Francois Verrey, Vartan Kurtcuoglu, Ufuk Olgac, Victoria Makrides
Determining the contributions of different transporter species to overall cellular transport is fundamental for understanding the physiological regulation of solutes. We calculated the relative activities of Solute Carrier (SLC) transporters using the Michaelis-Menten equation and global fitting to estimate the normalized maximum transport rate for each transporter (Vmax). Data input were the normalized measured uptake of the essential neutral amino acid (AA) L-leucine (Leu) from concentration-dependence assays performed using Xenopus laevis oocytes...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28062679/posterior-uniportal-video-assisted-thoracoscopic-surgery-for-resection-of-the-apical-segment-of-the-right-lower-lobe-followed-by-completion-lobectomy
#20
Davor Stamenovic, Antje Messerschmidt
Uniportal thoracoscopic resections offer less pain and better cosmetic results. They are usually performed through an antero-lateral incision. Posterior uniportal approach has not been described yet. A 65-year-old female was admitted to our clinic for the treatment of an adenocarcinoma, located in the apical segment of the right lower lobe. Owing to the ideal location and size, anatomical segment resection and radical lymphadenectomy was planned. Fissureless video-assisted thoracoscopic resection of the apical segment of the right lower lobe, using a uniportal posterior approach was performed, followed by mediastinal lymphadenectomy...
January 6, 2017: Interactive Cardiovascular and Thoracic Surgery
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