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Hyperthermic conditioning

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https://www.readbyqxmd.com/read/29740356/behavioural-pharmacokinetic-metabolic-and-hyperthermic-profile-of-3-4-methylenedioxypyrovalerone-mdpv-in-the-wistar-rat
#1
Rachel R Horsley, Eva Lhotkova, Katerina Hajkova, Barbara Feriancikova, Michal Himl, Martin Kuchar, Tomas Páleníček
3,4-methylenedioxypyrovalerone (MDPV) is a potent pyrovalerone cathinone that is substituted for amphetamines by recreational users. We report a comprehensive and detailed description of the effects of subcutaneous MDPV (1-4 mg/kg) on pharmacokinetics, biodistribution and metabolism, acute effects on thermoregulation under isolated and aggregated conditions, locomotion (open field) and sensory gating (prepulse inhibition, PPI). All studies used male Wistar rats. Pharmacokinetics after single dose of 2 mg/kg MDPV was measured over 6 h in serum, brain and lungs...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29724387/establishment-of-a-human-intrapleural-hyperthermic-perfusion-model-and-analysis-of-pleural-malignancy-treatment-depth
#2
Jing Li, Huan Yao, Yan Lei, Yanyong Ye
INTRODUCTION: Although human intrapleural hyperthermic perfusion (HIHP) has achieved excellent palliative effects in metastatic pleural malignancies, the optimum treatment conditions, including inlet temperature and treatment times based on tumor size, have yet to be determined. However, such information is recognized to be critical for treatment planning in clinics. Therefore, the current research aimed to solve these issues. METHODS: Using the finite-element method (FEM), a simplified three-dimensional HIHP model was established and verified according to the temperature data of specific measuring points based on a clinical therapeutic case...
May 2018: Respiratory Medicine
https://www.readbyqxmd.com/read/29723626/doxorubicin-hydrochloride-loaded-electrospun-chitosan-cobalt-ferrite-titanium-oxide-nanofibers-for-hyperthermic-tumor-cell-treatment-and-controlled-drug-release
#3
Maryam Radmansouri, Ehsan Bahmani, Einollah Sarikhani, Keivan Rahmani, Fariborz Sharifianjazi, Mohammad Irani
In the present study, the potential of doxorubicin hydrochloride (DOX)-loaded electrospun chitosan/cobalt ferrite/titanium oxide nanofibers was studied to investigate the simultaneous effect of hyperthermia and chemotherapy against melanoma cancer B16F10 cell lines. The cobalt ferrite nanoparticles were synthesized via microwave heating method. The titanium oxide nanoparticles were mixed with cobalt ferrite to control the temperature rise. The synthesized nanoparticles and nanofibers were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and vibrating sample magnetometer (VSM) analysis...
April 30, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29703622/multicystic-mesothelioma-operative-and-long-term-outcomes-with-cytoreductive-surgery-and-hyperthermic-intra-peritoneal-chemotherapy
#4
Eran Nizri, Dario Baratti, Marcello Guaglio, Snita Sinukumar, Antonello Cabras, Shigeki Kusamura, Marcello Deraco
BACKGROUND: Multicystic peritoneal mesothelioma (MCPM) is an extremely rare disease with 40-50% rate of recurrence after surgical debulking. Due to the recurrent nature of the disease, the option of cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy (HIPEC) was offered for this condition. In the present study we aimed to describe the outcomes of this strategy in a single center cohort. METHODS: We retrospectively reviewed a prospectively collected database of all patients with MCPM that underwent the combined procedure in our center...
March 14, 2018: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29652048/-should-a-doctor-take-into-consideration-the-influence-of-climatic-factors-deliberations-on-the-occasion-of-the-publication-of-a-new-monograph-the-book-of-essays-of-arid-medicine-by-z-r-zununov-i-h-nurov-and-s-z-zununova
#5
E L Povazhnaya
The authors analyze the monograph of the Uzbek scientists professor Z.R. Zununov, I.H. Nurov, and S.Z. Zununova «Essays of arid medicine» (Tashkent: «KAMALAK-PRESS» publishing house, 2016;540). The book presents the results of the comprehensive bioclimatic assessment of the arid zones of Uzbekistan, their extreme climatic conditions (such as high intensity and solar radiation and the considerable duration of its period, dry air and summer heat, sandstorms (the so-called «Afghans»), and the great variety of the natural health-improving factors including mineral waters, microclimate of the speleotherapeutic cave, the desert dune sand, etc...
April 9, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29624120/theoretical-investigations-and-density-functional-theory-based-probe-of-the-affinity-interaction-of-saccharide-ligands-with-extra-cellular-sialic-acid-residues
#6
Anjali Patel, Sanjay Tiwari, Prafulla K Jha
Changes in glycosylation pattern leads to malignant transformations among the cells. In combination with upregulated actions of sialyltransferases, it ultimately leads to differential expression of sialic acid (SA) at cell surface. Given its negative charge and localization to extracellular domain, SA has been exploited as a target for the development of targeted theranostics using approaches, such as, cationization and appending recognition saccharides on carrier surface. In this study, we have performed quantum mechanical calculations based on density functional theory (DFT) to study the interaction of saccharides with extracellular SA...
April 6, 2018: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29549297/the-relation-between-global-palm-distribution-and-climate
#7
Tammo Reichgelt, Christopher K West, David R Greenwood
Fossil palms provide qualitative evidence of (sub-) tropical conditions and frost-free winters in the geological past, including modern cold climate regions (e.g., boreal, or polar climates). The freeze intolerance of palms varies across different organs and life stages, with seedlings in particular less tolerant of sub-zero temperatures than adult plants, limiting successful establishment of populations while permitting adult palms to survive in cultivation outside their natural ranges. Quantitatively, palms indicate minimum cold month mean temperature (CMMT) at 2-8 °C in palaeoclimate reconstructions...
March 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29496018/short-term-heat-stress-results-in-increased-apoptotic-signaling-and-autophagy-in-oxidative-skeletal-muscle-in-sus-scrofa
#8
Shanthi Ganesan, Sarah C Pearce, Nicholas K Gabler, Lance H Baumgard, Robert P Rhoads, Joshua T Selsby
Prolonged environment-induced hyperthermia causes morbidities and mortality in humans and animals and appears to cause organ-specific injury and dysfunction. We have previously determined autophagic dysfunction and apoptotic signaling in oxidative skeletal muscle following prolonged hyperthermia. The aim of this investigation was to extend our knowledge regarding the early chronology of heat stress-mediated apoptotic and autophagic signaling in oxidative skeletal muscle. We hypothesized that 2, 4, and 6 h of hyperthermia would increase apoptosis and autophagy in oxidative skeletal muscle compared to thermoneutral (TN) conditions...
February 2018: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29433909/heat-shock-protein-90-inhibitor-enhances-apoptosis-by-inhibiting-the-akt-pathway-in-thermal-stimulated-sk-mel-2-human-melanoma-cell-line
#9
LETTER
Min Kyung Shin, Ki-Heon Jeong, Hyeongwon Choi, Hye-Jin Ahn, Mu-Hyoung Lee
BACKGROUND: Heat shock proteins (Hsps) are chaperone proteins, which are upregulated after various stresses. Hsp90 inhibitors have been investigated as adjuvant therapies for the treatment of melanoma. Thermal ablation could be a treatment option for surgically unresectable melanoma or congenital nevomelanocytic nevi, however, there is a limitation such as the possibility of recurrence. OBJECTIVE: We evaluated apoptosis in a melanoma cell line treated with the Hsp90 inhibitor 17-Dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG), in hyperthermic conditions...
February 8, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29423664/current-management-and-future-opportunities-for-peritoneal-metastases-peritoneal-mesothelioma
#10
H Richard Alexander, Claire Yue Li, Timothy J Kennedy
PURPOSE: Diffuse malignant peritoneal mesothelioma (MPM) is a rare and ultimately fatal cancer that was first described just over a century ago. It is a diffuse malignancy arising from the mesothelial lining of the peritoneum; morbidity and mortality from MPM is due to its propensity to progress locoregionally within the abdominal cavity. METHODS: The purpose of this article is to review the current state-of-the-science related to the diagnosis, staging, and treatment of MPM...
February 8, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29422733/quad-fever-treatment-through-lowering-of-ambient-temperature
#11
Shyam Sundar Krishnan, Pulak Nigam, Omar Bachh, Madabushi Chakravarthy Vasudevan
Hyperpyrexia is a rare and at times fatal condition seen in an Intensive Care Unit setup. We encountered a case of a 65-year-old patient with road traffic accident presenting with dorsal spine fracture at D10 level. He underwent decompression and fusion for the same. He developed hyperpyrexia of sudden onset on the 10th day of admission with no source of infection and adequate broad-spectrum antibiotic coverage with adequate thrombo-embolic prevention in place. The patient showed no response to antipyretic agents and other cooling methods...
January 2018: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29363138/investigation-of-the-hotdog-patient-warming-system-detection-of-thermal-gradients
#12
D McCarthy, B Matz, J Wright, L Moore
OBJECTIVE: To assess the performance of an active patient-warming device. MATERIALS AND METHODS: Temperatures of an active patient-warming device (HotDog system) were measured at various time points using an infrared thermometer. The study was conducted in two phases: Phase 1 compared temperatures among four different areas of the warming blanket. Phase 2 compared conditions simulating different scenarios using a weighted patient simulator. RESULTS: Phase 1: Three out of four positions on the warming blanket had significantly different temperature measurements...
May 2018: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/29360435/cerebellar-oxidative-stress-and-fine-motor-impairment-in-adolescent-rats-exposed-to-hyperthermia-induced-seizures-is-prevented-by-maternal-caffeine-intake-during-gestation-and-lactation
#13
María Crespo, David Agustín León-Navarro, Mairena Martín
Febrile seizures (FS) is one of the most common convulsive disorders in infants and young children that only occurs during the first years of life in humans, when the cerebellum is still developing. Several works have shown that maternal caffeine consumption during gestation and lactation can exert protective effects on developing brain under pathological conditions. Here, we have used an animal model of FS to know whether maternal caffeine consumption during gestation and lactation exhibited protective effects on rat cerebellum...
March 5, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29313151/cnidarian-primary-cell-culture-as-a-tool-to-investigate-the-effect-of-thermal-stress-at-cellular-level
#14
P Ventura, G Toullec, C Fricano, L Chapron, V Meunier, E Röttinger, P Furla, S Barnay-Verdier
In the context of global change, symbiotic cnidarians are largely affected by seawater temperature elevation leading to symbiosis breakdown. This process, also called bleaching, is triggered by the dysfunction of the symbiont photosystems causing an oxidative stress and cell death to both symbiont and host cells. In our study, we wanted to elucidate the intrinsic capacity of isolated animal cells to deal with thermal stress in the absence of symbiont. In that aim, we have characterized an animal primary cell culture form regenerating tentacles of the temperate sea anemone Anemonia viridis...
April 2018: Marine Biotechnology
https://www.readbyqxmd.com/read/29247749/regional-and-long-range-neural-synchronization-abnormality-during-passive-hyperthermia
#15
Wei Han, Shaowen Qian, Qingjun Jiang, Kai Liu, Bo Li, Gang Sun
Passive hyperthermia would impair wide-domain cognitive performances (e.g. attention, working memory), which may involve abnormal regional and long-range neural activity. Combining the regional homogeneity (ReHo) and seed-based functional connectivity analysis, this study investigated the regional and long-range neural synchronization abnormality during passive hyperthermia. We acquired the resting-state blood oxygenation level dependent (BOLD) data from twenty-three healthy male participants in two simulated thermal conditions: normothermic condition (NC) with temperature at 25°C for 1 h and hyperthermic condition (HC) with temperature at 50°C for 1 h...
April 2, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29246446/febrile-temperature-reprograms-by-redox-mediated-signaling-the-mitochondrial-metabolic-phenotype-in-monocyte-derived-dendritic-cells
#16
Marta Menga, Rosa Trotta, Rosella Scrima, Consiglia Pacelli, Veronica Silvestri, Claudia Piccoli, Nazzareno Capitanio, Arcangelo Liso
Fever-like hyperthermia is known to stimulate innate and adaptive immune responses. Hyperthermia-induced immune stimulation is also accompanied with, and likely conditioned by, changes in the cell metabolism and, in particular, mitochondrial metabolism is now recognized to play a pivotal role in this context, both as energy supplier and as signaling platform. In this study we asked if challenging human monocyte-derived dendritic cells with a relatively short-time thermal shock in the fever-range, typically observed in humans, caused alterations in the mitochondrial oxidative metabolism...
March 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29204126/pharmacokinetic-ambulatory-and-hyperthermic-effects-of-3-4-methylenedioxy-n-methylcathinone-methylone-in-rats
#17
Kristýna Štefková, Monika Židková, Rachel R Horsley, Nikola Pinterová, Klára Šíchová, Libor Uttl, Marie Balíková, Hynek Danda, Martin Kuchař, Tomáš Páleníček
Methylone (3,4-methylenedioxy- N -methylcathinone) is a synthetic cathinone analog of the recreational drug ecstasy. Although it is marketed to recreational users as relatively safe, fatalities due to hyperthermia, serotonin syndrome, and multi-organ system failure have been reported. Since psychopharmacological data remain scarce, we have focused our research on pharmacokinetics, and on a detailed evaluation of temporal effects of methylone and its metabolite nor-methylone on behavior and body temperature in rats...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29184697/clinical-presentation-diagnosis-classification-and-management-of-peritoneal-mesothelioma-a-review
#18
REVIEW
Alfonso García-Fadrique, Akash Mehta, Faheez Mohamed, Sanjeev Dayal, Tom Cecil, Brendan J Moran
Peritoneal mesothelioma (PM) is an uncommon but a serious, and often, fatal primary peritoneal tumour, with increasing incidence worldwide. Conventional systemic chemotherapy, generally based on experience with pleural mesothelioma, usually has disappointing results considering PM as a terminal condition. Patients usually present with non-specific symptoms of abdominal distension and pain making the diagnosis challenging. As PM is confined to the abdomen for all, or much, of its clinical course, a multimodality treatment combining cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) has emerged as a new standard of care, and has been reported to achieve promising survival outcomes and local disease control in selected patients with PM...
October 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/29150040/management-of-malignant-lung-entrapment-the-oncothorax
#19
REVIEW
Roman Petrov, Charles Bakhos, Abbas E Abbas
Pleural metastasis is a common occurrence in up to 30% of patients with metastatic cancer. When lung entrapment and loculation of fluid occur, treatment is more difficult and we have named this condition "oncothorax." The malignant adhesions that entrap the lung in an oncothorax are not typically amenable to surgical decortication. The standard approach for managing these patients is to place an indwelling catheter. Other options may include pleurectomy and decortication, intrapleural hyperthermic chemoperfusion, and intrapleural photodynamic therapy...
February 2018: Thoracic Surgery Clinics
https://www.readbyqxmd.com/read/29147526/a-ratiometric-fluorescent-probe-for-imaging-and-quantifying-anti-apoptotic-effects-of-gsh-under-temperature-stress
#20
Xiaoyue Han, Xinyu Song, Fabiao Yu, Lingxin Chen
Hypothermia and hyperthermia are cell stressed states resulting from environmental temperature changes, which can abnormally decrease intracellular glutathione (GSH) concentrations and induce apoptosis. As the most abundant intracellular non-protein biothiol, GSH can protect cells from apoptosis. Considering the important roles of GSH in the anti-apoptotic process in cells and in vivo , we strive to develop a powerful chemical tool for the direct detection of GSH concentration changes under temperature stress...
October 1, 2017: Chemical Science
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