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https://www.readbyqxmd.com/read/28236846/the-prevention-of-benign-prostatic-hyperplasia-bph
#1
W G Roper
Barry Marshall and Robin Warren were the first to show that the chronic diseases (gastric ulcer and chronic gastritis) were caused by an infection (Helicobacter pylori). The chronic disease benign prostatic hyperplasia belongs to the same ilk, except that the infection process is much more subtle and complex. The enzyme Phospholipase D (PLD) which is attached to the outer membrane of Escherichia coli (E. coli) has now been almost completely proven to be the basic cause of BPH. The evidence for this process is now extremely strong and compelling...
March 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28235370/low-temperature-pld-growth-of-ultrathin-zno-nanowires-by-using-zn-x-al1-x-o-and-zn-x-ga1-x-o-seed-layers
#2
Alexander Shkurmanov, Chris Sturm, Helena Franke, Jörg Lenzner, Marius Grundmann
ZnO nanowires (NWs) are used as building blocks for a wide range of different devices, e.g. light emitters, resonators, and sensors. Integration of the NWs into such structures requires a high level of NWs' diameter control. Here, we present that the doping concentration of Zn x Al1-x O and Zn x Ga1-x O seed layers has a strong impact on the NW growth and allows to tune the diameter of the NWs by two orders of magnitude down to less than 7 nm. These ultrathin NWs exhibit a well-oriented vertical growth and thus are promising for the investigation of quantum effects...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28225112/enhanced-thermoelectricity-of-three-dimensionally-mesostructured-bixsb2-xte3-nanoassemblies-from-micro-scaled-open-gaps-to-isolated-sealed-mesopores
#3
Tsung-Han Chen, Ping-Yu Lin, Hsiu-Cheng Chang, Chun-Hua Chen
We describe an innovative interfacial design concept and nanostructuring of novel BixSb2-xTe3 (BST) nanoassembled films comprising unique air-solid interfaces from micro-scaled open gaps to isolated sealed mesopores, and high-quality solid-solid ones including the coherent grain boundaries and specific twins, utilizing pulsed laser deposition (PLD), for potentially activating multiple thermoelectric enhancing mechanisms. The unusual mesopore embedded BST films exhibit the highest power factor of ∼33 μW cm(-1) K(-2), which is comparable to or higher than the previously reported values for BST, and the corresponding relatively low thermal diffusivity in contrast to that for dense pore-less BST films evidently reveals the crucial role of the three-dimensionally and densely arranged air-solid interfaces in significantly arising the phonon scattering...
February 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28223993/diacylglycerol-kinases-are-widespread-in-higher-plants-and-display-inducible-gene-expression-in-response-to-beneficial-elements-metal-and-metalloid-ions
#4
Hugo F Escobar-Sepúlveda, Libia I Trejo-Téllez, Paulino Pérez-Rodríguez, Juan V Hidalgo-Contreras, Fernando C Gómez-Merino
Diacylglycerol kinases (DGKs) are pivotal signaling enzymes that phosphorylate diacylglycerol (DAG) to yield phosphatidic acid (PA). The biosynthesis of PA from phospholipase D (PLD) and the coupled phospholipase C (PLC)/DGK route is a crucial signaling process in eukaryotic cells. Next to PLD, the PLC/DGK pathway is the second most important generator of PA in response to biotic and abiotic stresses. In eukaryotic cells, DGK, DAG, and PA are implicated in vital processes such as growth, development, and responses to environmental cues...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28220737/adenovirus-associated-pneumonia-in-south-african-children-presentation-clinical-course-and-outcome
#5
M Zampoli, Z Mukuddem-Sablay
BACKGROUND: Viruses have emerged as important aetiological agents of childhood pneumonia. OBJECTIVE: To investigate the clinical presentation, severity and outcome of adenovirus-associated pneumonia (AVP) in children. METHODS: A retrospective analysis of AVP cases over 12 months was performed, including demographic, clinical course and outcome (death, persistent lung disease (PLD)) data. RESULTS: Two hundred and six AVP cases (median age 12 months, interquartile range 6 - 24) were identified; 70 children (34...
January 30, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28215670/therapeutic-efficacy-of-combined-pegylated-liposomal-doxorubicin-and-radiofrequency-ablation-comparing-single-and-combined-therapy-in-young-and-old-mice
#6
Alexander V Andriyanov, Emma Portnoy, Erez Koren, Sara Eyal, S Nahum Goldberg, Yechezkel Barenholz
Antitumor therapy in the elderly is particularly challenging due to multiple, often chronic diseases, poly-therapy, and age-related physiological changes that affect drug efficacy and safety. Furthermore, tumors may become more aggressive and drug-resistant with advanced age, leading to poor patient prognosis. In this study, we evaluated in mice bearing medulloblastoma xenografts the effect of age on tumor progression and tumor therapy. We focused on therapeutic efficacy of two treatment modalities alone radiofrequency ablation therapy (RFA), PEGylated liposomal doxorubicin (PLD) equivalent to Doxil, and their combination...
February 16, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28214728/lipid-signalling-mediated-by-pld-pa-modulates-proline-and-h2o2-levels-in-barley-seedlings-exposed-to-short-and-long-term-chilling-stress
#7
Micaela Peppino Margutti, Matias Reyna, María Verónica Meringer, Graciela E Racagni, Ana Laura Villasuso
Phospholipase D (PLD) hydrolyses phospholipids to yield phosphatidic acid (PA) and a head group, and is involved in responses to a variety of environmental stresses, including chilling and freezing stress. Barley responses to chilling stress (induced by incubating seedlings at 4 °C) are dynamic and the duration of stress, either short (0-180 min) or long-term (24-36 h) had a significant impact on the response. We investigated the roles of PLD/PA in responses of barley (Hordeum vulgare) seedlings to short and long-term chilling stress, based on regulation of proline and reactive oxygen species (ROS) levels...
February 10, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28209987/targeting-phospholipase-d-in-cancer-infection-and-neurodegenerative-disorders
#8
REVIEW
H Alex Brown, Paul G Thomas, Craig W Lindsley
Lipid second messengers have essential roles in cellular function and contribute to the molecular mechanisms that underlie inflammation, malignant transformation, invasiveness, neurodegenerative disorders, and infectious and other pathophysiological processes. The phospholipase D (PLD) isoenzymes PLD1 and PLD2 are one of the major sources of signal-activated phosphatidic acid (PtdOH) generation downstream of a variety of cell-surface receptors, including G protein-coupled receptors (GPCRs), receptor tyrosine kinases (RTKs) and integrins...
February 17, 2017: Nature Reviews. Drug Discovery
https://www.readbyqxmd.com/read/28201848/new-advances-in-polycystic-liver-diseases
#9
A Santos-Laso, L Izquierdo-Sánchez, P Y Lee-Law, M J Perugorria, M Marzioni, J J G Marin, L Bujanda, J M Banales
Polycystic liver diseases (PLDs) include a heterogeneous group of congenital disorders inherited as dominant or recessive genetic traits; they are manifested alone or in association with polycystic kidney disease. Ductal plate malformation during embryogenesis and the loss of heterozygosity linked to second-hit mutations may promote the dilatation and/or development of a large number (> 20) of biliary cysts, which are the main cause of morbidity in these patients. Surgical procedures aimed to eliminate symptomatic cysts show short-term beneficial effects, but are not able to block the disease progression...
February 2017: Seminars in Liver Disease
https://www.readbyqxmd.com/read/28181796/self-assembly-of-the-lateral-in2se3-cuinse2-heterojunction-for-enhanced-photodetection
#10
Zhaoqiang Zheng, Jiandong Yao, Guowei Yang
Layered materials have been found to be promising candidates for next-generation microelectronic and optoelectronic devices due to their unique electrical and optical properties. The p-n junction is an elementary building block for microelectronics and optoelectronics devices. Herein, using the pulsed-laser deposition (PLD) method, we achieve pure In2Se3-based photodetectors and In2Se3/CuInSe2-based photodetectors with a lateral p-n heterojunction. In comparison to that of the pure In2Se3-based photodetector, the photodetectors based on the In2Se3/CuInSe2 heterojunction exhibit a tremendous promotion of photodetection performance and obvious rectifying behavior...
February 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28176353/lysophosphatidic-acid-induced-itch-is-mediated-by-signaling-of-lpa5-receptor-phospholipase-d-and-trpa1-trpv1
#11
Hiroki Kittaka, Kunitoshi Uchida, Naomi Fukuta, Makoto Tominaga
Intractable and continuous itch sensations often accompany diseases such as atopic dermatitis, neurogenic lesions, uremia and cholestasis. Lysophosphatidic acid (LPA) is an itch mediator found in cholestatic itch patients and it induces acute itch and pain in the experimental rodent models. However, the molecular mechanism by which LPA activates peripheral sensory neurons remains unknown. In this study, we used a cheek injection method in mice to reveal that LPA induced itch-related behaviors but not pain-related behaviors...
February 8, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28152567/phospholipase-d%C3%AE-1-mediated-phosphatidic-acid-change-is-a-key-determinant-of-desiccation-induced-viability-loss-in-seeds
#12
Hongying Chen, Xiaomei Yu, Xudong Zhang, Lan Yang, Xing Huang, Jie Zhang, Hugh W Pritchard, Weiqi Li
High sensitivity of seeds to water loss is a widespread phenomenon in the world's plant species. The molecular basis of this trait is poorly understood but thought to be associated with critical changes in membrane function. We profiled membrane lipids of seeds in eight species with varying levels of desiccation tolerance and found a close association between reducing seed viability and increasing phosphatidic acid (PA). We applied hydration-dehydration cycles to Arabidopsis seeds, that are normally desiccation tolerant, to mimic the onset of desiccation sensitivity with progression towards germination and examined the role of phospholipase D (PLD) in desiccation stress-induced production of PA...
February 2, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28140689/the-efficacy-of-trabectedin-in-treating-ovarian-cancer
#13
Eleonora Teplinsky, Thomas J Herzog
The majority of women with epithelial ovarian cancer present with advanced stage disease and there is a critical need for novel drugs and treatment strategies to improve outcomes. Trabectedin is a unique cytotoxic agent with a complex mechanism of action. It binds to guanines in the N2 position in the minor groove of DNA and its cytotoxicity involves DNA repair pathways and transcription regulation. Trabectedin's activity is also related to the drug-induced changes of the tumor microenvironment. It has been shown to improve progression-free survival in combination with pegylated liposomal doxorubicin in patients with platinum-sensitive relapsed ovarian cancer...
February 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28138993/arachidonic-acid-containing-phosphatidylcholine-characterized-by-consolidated-plasma-and-liver-lipidomics-as-an-early-onset-marker-for-tamoxifen-induced-hepatic-phospholipidosis
#14
Kosuke Saito, Keisuke Goda, Akio Kobayashi, Naohito Yamada, Kyoko Maekawa, Yoshiro Saito, Shoichiro Sugai
Lipid profiling has emerged as an effective approach to not only screen disease and drug toxicity biomarkers but also understand their underlying mechanisms of action. Tamoxifen, a widely used antiestrogenic agent for adjuvant therapy against estrogen-positive breast cancer, possesses side effects such as hepatic steatosis and phospholipidosis (PLD). In the present study, we administered tamoxifen to Sprague-Dawley rats and used lipidomics to reveal tamoxifen-induced alteration of the hepatic lipid profile and its association with the plasma lipid profile...
January 31, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28138961/el-ni%C3%A3-o-episodes-coincide-with-california-moray-gymnothorax-mordax-settlement-around-santa-catalina-island-california
#15
B A Higgins, D Pearson, R S Mehta
The hypothesis that El Niño events influence the settlement patterns of the California moray Gymnothorax mordax is tested. The pelagic larval duration (PLD) of larval G. mordax is unknown, but studies on leptocephalus of related species suggest that larvae are long-lived, up to 2 years. Gymnothorax mordax, an elusive predatory species and the only muraenid off the coast of California, is considered abundant in the waters around Catalina Island. Thirty-three individuals were collected from Two Harbors, Catalina Island, and otoliths were taken to provide estimates of their age...
January 31, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28129595/3d-sdar-modeling-of-herg-potassium-channel-affinity-a-case-study-in-model-design-and-toxicophore-identification
#16
Iva B Stoyanova-Slavova, Svetoslav H Slavov, Dan A Buzatu, Richard D Beger, Jon G Wilkes
A dataset of 237 human Ether-à-go-go Related Gene (hERG) potassium channel inhibitors (180 of which were used for model building and validation, whereas 57 constituted the "true" external prediction set) collected from 22 literature sources was modeled by 3D-SDAR. To produce reliable and reproducible classification models for hERG blocking, the initial set of 180 chemicals was split into two subsets: a balanced modeling set consisting of 118 compounds and an unbalanced validation set comprised of 62 compounds...
January 16, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28105242/skin-toxicity-in-a-patient-with-ovarian-cancer-treated-with-pegylated-liposomal-doxorubicin-a-case-report-and-review-of-the-literature
#17
Joanna Kubicka-Wołkowska, Magdalena Kędzierska, Maja Lisik-Habib, Piotr Potemski
Pegylated liposomal doxorubicin (PLD) is a form of doxorubicin enclosed in pegylated liposomes. In contrast to conventional doxorubicin, PLD is characterized by a lower incidence of cardiotoxicity and myelosuppression. However, it induces specific mucocutaneous side effects, particularly palmar-plantar erythrodysesthesia (PPE). Other dermal manifestations, such as intertrigo-like dermatitis, diffuse follicular rash, melanotic macules, maculopapular rash or recall phenomenon are less common. Mechanisms that lead to skin toxicity remain unclear, however, certain reports indicate that drug excretion in sweat, host-vs...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28103040/strain-engineered-oxygen-vacancies-in-camno3-thin-films
#18
Ravini U Chandrasena, Weibing Yang, Qingyu Lei, Mario U Delgado-Jaime, Kanishka D Wijesekara, Maryam Golalikhani, Bruce A Davidson, Elke Arenholz, Keisuke Kobayashi, Masaaki Kobata, Frank M F de Groot, Ulrich Aschauer, Nicola A Spaldin, Xiaoxing Xi, Alexander X Gray
We demonstrate a novel pathway to control and stabilize oxygen vacancies in complex transition-metal oxide thin films. Using atomic layer-by-layer pulsed laser deposition (PLD) from two separate targets, we synthesize high-quality single-crystalline CaMnO3 films with systematically varying oxygen vacancy defect formation energies as controlled by coherent tensile strain. The systematic increase of the oxygen vacancy content in CaMnO3 as a function of applied in-plane strain is observed and confirmed experimentally using high-resolution soft X-ray absorption spectroscopy (XAS) in conjunction with bulk-sensitive hard X-ray photoemission spectroscopy (HAXPES)...
January 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28094039/cisplatin-can-be-safely-administered-to-ovarian-cancer-patients-with-hypersensitivity-to-carboplatin
#19
A Bergamini, C Pisano, M Di Napoli, L Arenare, C Della Pepa, R Tambaro, G Facchini, P Gargiulo, S Rossetti, G Mangili, S Pignata, S C Cecere
OBJECTIVE: Hypersensitivity reactions (HSR) are frequently reported in patients rechallenged with carboplatin for recurrent ovarian cancer (ROC) and represent a critical issue, since discontinuation of the platinum-based therapy could affect prognosis. Several strategies to allow platinum rechallenge have been described, with controversial outcomes. The aim of this study is to illustrate a 10-year experience with cisplatin in patients with a previous HSR to carboplatin or at risk for allergy...
January 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28088967/-a-phase-%C3%A2-dose-escalating-trial-of-pegylated-liposomal-doxorubicin-in-combination-with-cyclophosphamide-vincristine-and-prednisone-for-aggressive-non-hodgkin-lymphoma
#20
W N Shen, D M Ji, K Xue, Q L Zhang, F F Lyu, X N Hong, J N Cao, Y Guo
Objective: To explore the maximum tolerated dose of pegylated liposomal doxorubicin (PLD) in combination with cyclophosphamide, vincristine and prednisone as a modified CHOP regimen for aggressive non-Hodgkin lymphoma. Methods: Patients with newly diagnosed aggressive non-Hodgkin lymphoma were eligible for this trial. PLD was administered in cycle 1 and categorized into 4 dose level (30 mg/m(2), 35 mg/m(2), 40 mg/m(2), 45 mg/m(2) D1) according to a 3 + 3 approach for dose-escalation. Doxorubin was used in cycles 2-6...
December 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
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