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Hyperthermia

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https://www.readbyqxmd.com/read/29471075/interspecific-variation-in-avian-thermoregulatory-patterns-and-heat-dissipation-behaviours-in-a-subtropical-desert
#1
Michelle Thompson, Susan Cunningham, Andrew E McKechnie
Deserts are physiologically challenging environments for birds, with scarce, unpredictable water resources combined with air temperatures (Tair ) regularly exceeding avian body temperature (Tb ). For arid-zone birds, mismatches between water supply and demand are a constant threat, yet interspecific variation in trade-offs between hyperthermia avoidance and dehydration avoidance remain poorly understood, particularly for free-ranging individuals. We examined behavioural and physiological responses to high Tair in nine species representing three orders that vary substantially in their heat dissipation thresholds, specifically pant50 , the Tair at which panting behaviour is present in 50% of observations...
February 19, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29467424/spin-canting-across-core-shell-fe-3-o-4-mn-x-fe-3-x-o-4-nanoparticles
#2
Samuel D Oberdick, Ahmed Abdelgawad, Carlos Moya, Samaneh Mesbahi-Vasey, Demie Kepaptsoglou, Vlado K Lazarov, Richard F L Evans, Daniel Meilak, Elizabeth Skoropata, Johan van Lierop, Ian Hunt-Isaak, Hillary Pan, Yumi Ijiri, Kathryn L Krycka, Julie A Borchers, Sara A Majetich
Magnetic nanoparticles (MNPs) have become increasingly important in biomedical applications like magnetic imaging and hyperthermia based cancer treatment. Understanding their magnetic spin configurations is important for optimizing these applications. The measured magnetization of MNPs can be significantly lower than bulk counterparts, often due to canted spins. This has previously been presumed to be a surface effect, where reduced exchange allows spins closest to the nanoparticle surface to deviate locally from collinear structures...
February 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29466080/does-pre-cooling-with-whole-body-immersion-affect-thermal-sensation-or-perceived-exertion-a-critically-appraised-topic
#3
Timothy M Wohlfert, Kevin C Miller
Clinical Scenario: Exertional heat stroke (EHS) is a potentially deadly heat illness and poses a significant health risk to athletes; EHS survival rates are near 100% if properly recognized and treated.1 Whole body cold water immersion (CWI) is the most effective method of lowering body core temperature.2 Precooling (PC) with CWI before exercise may prevent severe hyperthermia and/or EHS by increasing the body's overall heat-storage capacity.3 However, PC may also alter athletes' perception of how hot they feel or how hard they are exercising...
February 21, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29461475/octodrine-new-questions-and-challenges-in-sport-supplements
#4
Valeria Catalani, Mariya Prilutskaya, Ahmed Al-Imam, Shanna Marrinan, Yasmine Elgharably, Mire Zloh, Giovanni Martinotti, Robert Chilcott, Ornella Corazza
Background : Octodrine is the trade name for Dimethylhexylamine (DMHA), a central nervous stimulant that increases the uptake of dopamine and noradrenaline. Originally developed as a nasal decongestant in the 1950's, it has recently been re-introduced on the market as a pre-workout and 'fat-burner' product but its use remains unregulated. Our work provides the first observational cross-sectional analytic study on Octodrine as a new drug trend and its associated harms after a gap spanning seven decades. Methods : A comprehensive multilingual assessment of literature, websites, drug fora and other online resources was carried out with no time restriction in English, German, Russian and Arabic...
February 20, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29461317/perioperative-cardiac-arrest-focus-on-malignant-hyperthermia-mh
#5
Naveen Nathan
No abstract text is available yet for this article.
March 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29457660/prevalence-of-orofacial-clefts-and-risks-for-nonsyndromic-cleft-lip-with-or-without-cleft-palate-in-newborns-at-a-university-hospital-from-west-mexico
#6
Jorge Román Corona-Rivera, Lucina Bobadilla-Morales, Alfredo Corona-Rivera, Christian Peña-Padilla, Sandra Olvera-Molina, Miriam A Orozco-Martín, Diana García-Cruz, Izabel M Ríos-Flores, Brian Gabriel Gómez-Rodríguez, Gemma Rivas-Soto, J Jesús Pérez-Molina
We determined the overall prevalence of typical orofacial clefts (OFCs) and the potential risks for nonsyndromic cleft lip with or without palate (NSCL±P) in a University Hospital from west México. For the prevalence, 227 live born infants with typical OFCs were included from a total of 81,193 births occurred during the period 2009 to 2016 at the 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara (Guadalajara, Jalisco, Mexico). To evaluate potential risks, a case-control study was conducted among 420 newborns, including only those 105 patients with NSCL±P (cases), and 315 infants without birth defects (controls)...
February 19, 2018: Congenital Anomalies
https://www.readbyqxmd.com/read/29456979/quercetin-prevents-body-weight-loss-due-to-the-using-of-superparamagnetic-iron-oxide-nanoparticles-in-rat
#7
Rezvan Enteshari Najafabadi, Nasrin Kazemipour, Abolghasem Esmaeili, Siamak Beheshti, Saeed Nazifi
Background: Superparamagnetic iron oxide nanoparticles (SPION) have been largely considered for numerous applications in biomedicine such as magnetic resonance imaging, hyperthermia, cell tracking, anticancer treatment, and targeted delivery of drugs or genes. However, they may have side effects such body weight loss. Quercetin (QT), a strong antioxidant and free radical scavenger and a natural flavonoid, has a wide range of biological and therapeutic effects. In this study, the effect of QT on prevention of weight loss due to the using of SPION has been investigated...
2018: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29456480/novel-homozygous-missense-mutation-in-ryr1-leads-to-severe-congenital-ptosis-ophthalmoplegia-and-scoliosis-in-the-absence-of-myopathy
#8
Nafi Dilaver, Neda Mazaheri, Reza Maroofian, Jawaher Zeighami, Tahere Seifi, Mina Zamani, Alireza Sedaghat, Gholam Reza Shariati, Hamid Galehdari
Ryanodine receptor 1 ( RYR1 ) is an intracellular calcium receptor primarily expressed in skeletal muscle with a role in excitation contraction. Both dominant and recessive mutations in the RYR1 gene cause a range of RYR1 -related myopathies and/or susceptibility to malignant hyperthermia (MH). Recently, an atypical manifestation of ptosis, variably presenting with ophthalmoplegia, facial paralysis, and scoliosis but without significant muscle weakness, has been reported in 9 cases from 4 families with bialleic variants in RYR1 ...
December 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/29453555/evaluation-of-the-effect-of-hyperthermia-and-electron-radiation-on-prostate-cancer-stem-cells
#9
Zhila Rajaee, Samideh Khoei, Seied Rabi Mahdavi, Marzieh Ebrahimi, Sakine Shirvalilou, Alireza Mahdavian
The aim of this study was to investigate the effect of hyperthermia, 6 MeV electron radiation and combination of these treatments on cancer cell line DU145 in both monolayer culture and spheroids enriched for prostate cancer stem cells (CSCs). Flowcytometric analysis of the expression of molecular markers CD133+ /CD44+ was carried out to determine the prostate CSCs in cell line DU145 grown as spheroids in serum-free medium. Following monolayer and spheroid culture, DU145 cells were treated with different doses of hyperthermia, electron beam and combination of them...
February 17, 2018: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/29453540/cellular-and-molecular-toxicity-of-iron-oxide-nanoparticles
#10
Blanca Laffon, Natalia Fernández-Bertólez, Carla Costa, Fátima Brandão, João Paulo Teixeira, Eduardo Pásaro, Vanessa Valdiglesias
Iron oxide nanoparticles (ION) have attracted much attention because of their particular physico-chemical properties, including superparamagnetism. These features make them suitable for many purposes and several interesting biomedical applications, such as to increase contrast in magnetic resonance imaging (MRI), as drug delivery systems and as hyperthermia agents. However, they have also shown to be easily accumulated in diverse tissues and induce toxicity at different levels. This chapter reviews the different cellular and molecular effects induced by ION reported from in vitro studies with human and non-human cell lines...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29450459/technological-advances-biologic-rationales-and-the-associated-success-of-chemotherapy-with-hyperthermia-in-improved-outcomes-in-patients-with-sarcoma
#11
Mark W Dewhirst, David Kirsch
No abstract text is available yet for this article.
February 15, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29450452/effect-of-neoadjuvant-chemotherapy-plus-regional-hyperthermia-on-long-term-outcomes-among-patients-with-localized-high-risk-soft-tissue-sarcoma-the-eortc-62961-esho-95-randomized-clinical-trial
#12
Rolf D Issels, Lars H Lindner, Jaap Verweij, Rüdiger Wessalowski, Peter Reichardt, Peter Wust, Pirus Ghadjar, Peter Hohenberger, Martin Angele, Christoph Salat, Zeljko Vujaskovic, Soeren Daugaard, Olav Mella, Ulrich Mansmann, Hans Roland Dürr, Thomas Knösel, Sultan Abdel-Rahman, Michael Schmidt, Wolfgang Hiddemann, Karl-Walter Jauch, Claus Belka, Alessandro Gronchi
Importance: Patients with soft tissue sarcoma are at risk for local recurrence and distant metastases despite optimal local treatment. Preoperative anthracycline plus ifosfamide chemotherapy improves outcome in common histological subtypes. Objective: To analyze whether the previously reported improvement in local progression-free survival by adding regional hyperthermia to neoadjuvant chemotherapy translates into improved survival. Design, Setting, and Participants: Open-label, phase 3 randomized clinical trial to evaluate the efficacy and toxic effects of neoadjuvant chemotherapy plus regional hyperthermia...
February 15, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29448846/are-infectious-diseases-and-microbiology-new-fields-for-thermal-therapy-research
#13
Deniz Gazel, Mehmet Yılmaz
Antimicrobial chemotherapy and surgery are classical methods for treating infectious diseases. However, there is a need for alternative methods to cure infections caused by antibiotic-resistant pathogens, recurrent or chronic infections, and unreachable local infections in which the use of drugs or surgery is anatomically and physically restricted. Several microorganisms are known to be sensitive to mild hyperthermia, and this sensitivity is one of the potential benefits proposed for the host during an episode of fever...
February 15, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29448643/effect-of-colloidal-medium-on-the-shelf-life-and-stability-of-gold-nanorods-prepared-by-seed-mediated-synthesis
#14
Parveer Kaur, Bhupendra Chudasama
Gold nanorods (GNRs) owing to their tunable longitudinal surface plasmon resonance in tissue transparent near infrared region have potential applications (like cancer imaging, surface enhanced Raman spectroscopy, cancer targeting, drug delivery and optical hyperthermia) in nanomedicine. Success of these diagnosis/therapy options depends on the plasmonic properties of gold nanorods, which are influenced by the interaction of GNRs with the colloidal medium. In this article, a systematic study is performed to evaluate the effect of colloidal medium on shelf life and stability of gold GNRs...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448602/preparation-of-silica-coated-magnetic-nanoparticles-for-bioseparation
#15
Dae-Won Lee, Hira Fatima, Kyo-Seon Kim
Magnetic nanoparticles have been intensively developed and applied in several biomedical applications such as targeted delivery, drug therapy, hyperthermia, magnetic resonance imaging and bioseparation etc. This work describes a simple and convenient method to synthesize silica coated Fe3O4 nanoparticles which have the potential to be used in the bioseparation of fetuin from fetal bovine serum and albumin from the egg. In this work, uniform Fe3O4 particles were prepared through the one-pot solvothermal process at 200 °C for 12 h using a sole iron precursor (FeCl3 · 6H2O) and then were coated with SiO2 to prepare silica coated Fe3O4 nanoparticles by hydrolysis and condensation of tetraethyl orthosilicate in ethanol and H2O medium...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29447018/summary-of-numerical-analyses-for-therapeutic-uses-of-laser-activated-gold-nanoparticles
#16
Jakub Mesicek, Kamil Kuca
The optimal light dose, heat generation, consequent heat spread, and an accurate thermal damage model, are key components of effective laser therapies. Recent advances in nanotechnology offer numerous possibilities on how to increase the efficacy of hyperthermia for tumour treatments. Gold nanoparticles are a promising candidate towards the achievement of this goal owing to their properties for efficiently converting light to heat. In this review, we summarise the numerical tools that are available for theoretical studies of gold-nanoparticle-mediated photo-thermal therapy...
February 15, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29443706/casq1-gene-is-an-unlikely-candidate-for-malignant-hyperthermia-susceptibility-in-the-north-american-population-erratum
#17
(no author information available yet)
No abstract text is available yet for this article.
March 2018: Anesthesiology
https://www.readbyqxmd.com/read/29442989/hyperthermia-temperature-of-magnetic-fluid-with-superparamagnetic-nanoparticles-subjected-to-an-alternating-magnetic-field
#18
Kuen-Hau Chen, Bor-Chyuan Chen, Ching-Yen Ho
This paper conducts the thermal analysis of magnetic fluid with superparamagnetic nanoparticles subjected to an alternating magnetic field. Magnetic fluid hyperthermia (MFH) provides a potential method for cancer treatment, which has fewer side effects than chemotherapy and radiotherapy. Superparamagnetic nanoparticles dispersed in water are suitable for safe application of MFH. A well-defined hyperthermia should only kill the cancer cells without injuring neighbouring normal tissue. A key factor for hyperthermia is to correctly control the alternating magnetic field-induced temperature of the magnetic fluid in the tumour...
April 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29442706/human-adipose-derived-stem-cells-and-osteoblasts-interaction-with-fe-cr-nb-b-magnetic-nanoparticles
#19
Luminita Simion Labusca, Dumitru-Daniel Herea, Ecaterina Radu, Camelia Danceanu, Horia Chiriac, Nicoleta Lupu
The use of materials at nanoscale is currently of increasing interest for life sciences and medicine. Magnetic nanoparticles (MNPs) are under scrutiny for a large array of applications in nanomedicine as diagnostic and therapeutic tools. Proprietary Fe-Cr-Nb-B MNPs display heating properties that recommends them as potent agents for delivery of local hyperthermia for the treatment of solid tumours. Stem cell mediated delivery represents a safe and accurate modality to target remote or metastatic tumour sites...
July 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29437806/rhabdomyolysis-in-stuve-wiedemann-syndrome
#20
Pemantah Sandheeah Ramdeny, Colin Powell, Mallinath Chakraborty, Louise Hartley
A 6-month-old male infant with Stuve-Wiedemann syndrome (SWS) presented with an acute respiratory arrest secondary to a rhinovirus respiratory infection from which he was rapidly resuscitated. He developed an acute kidney injury requiring supportive treatment and on day 3 of his illness was noted to have developed severe rhabdomyolysis (creatine kinase level 132 040 U/L (normal <320 U/L)). He was born from consanguineous parents with homozygous mutations in the leukaemia inhibitory factor receptor. He had skeletal dysplasia with metabolic bone disease and episodes of hyperthermia with lactic acidosis...
February 8, 2018: BMJ Case Reports
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