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Yolanda Peñaloza,Martha Valdivia,Adrián Poblano 대한청각학회 2020 Journal of Audiology & Otology Vol.24 No.1
Lateralization for central auditory processing (CAP) with dichotic digits recognition (DDR) test is believed expression of hemispheric dominance. Multiple sclerosis (MS) is considered an inflammatory and autoimmune alteration of central nervous system (CNS). Hearing alterations in MS and their role in CAP has not been well studied. A patient with MS and new kind of alteration in lateralization of CAP with DDR test is presented. A 53 year of age female with MS of 16 years of evolution, nine of them remained asymptomatic. She has a persistent advantage of the right ear for DDR test; but other monaural tests showed predominance of the left afferent pathway. Brainstem auditory evoked potentials (BAEPs) and long latency auditory evoked potentials (LLAEPs) showed adequate right response with deficits in organization of left response in BAEP, and N2 wave. In the contrary direction of previous publication, we disclosed advantage for DDR test, BAEP, and LLAEP in the right ear. We observed no left ear suppression; with predominance of correct left percentages in monaural psychoacoustics tests. We must keep on searching to find pathophysiological meaning of predominant of right or left auditory laterality as a CAP disorder in patients with MS.
Effect of Magnet Implant on Iron Biodistribution of Fe@C Nanoparticles in the Mouse
Elvira Escribano,Rodrigo Fernández-Pacheco,J. Gabriel Valdivia,M. Ricardo Ibarra,Clara Marquina,Josep Queralt 대한약학회 2012 Archives of Pharmacal Research Vol.35 No.1
The in vivo biodistribution of Fe@C nanoparticles (NP) was tested in mice bearing an inflammatory focus induced by injecting carrageenan into an air pouch previously formed on their back. The animals were intravenously injected NP with a high (60 mg/kg) or a low iron dose (6 mg/kg) and sacrificed 2 h later. Blood and organ samples (liver, spleen, lung, and kidney)were obtained; washed exudates were also collected. Iron concentration in plasma, blood cells, organs, and exudates was determined by flameless atomic-absorption-spectroscopy after digestion of organic material. Pouch exudate volume increased in all groups of mice with experimental inflammation. After i.v. administration of the high and low dose of NP,iron in exudate increased by 83.3% and 92.2%, respectively. A similar increase in hepatic iron appeared after the high dose (78%), but no increase appeared after the low dose. When the magnet was present, a 157% and 119% increase of iron in exudate appeared after both doses of NPs, but only the high dose of NP increased iron liver (60%). The presence of a magnetic field in the pouch favored selective biodistribution of NP in the inflammatory focus. These results indicate that mice with an inflammatory compartment are suitable for primary screening of different NP types. They also show that selective biodistribution is greater when a low dose of NP was used and that distribution in the target organ was increased by the magnetic field.
An Item Response Theory Analysis of Residents’ Perceived Sporting Event Impacts
Jingxian (Cecilia) Zhang,Dubravka Svetina Valdivia,Kevin K. Byon 글로벌지식마케팅경영학회 2022 Journal of Global Sport Management Vol.7 No.4
The evaluation of event impact is practical and helpful in increasing event quality. From residents’ positive points of view, hosting sporting events brings both the community and the country together, increases investment, and stimulates administrative pollution controls. As such, scales were developed to assess various impacts associated with sporting events. However, some psychometric information is missing in existing event impacts research. The purpose of this study is to illustrate how to use Item Response Theory (IRT) to measure positive event impacts. The sample (N = 423) was collected between May 14 and May 31, 2014, before the commencement of the Nanjing Youth Olympic Games in China. Positive event impacts measurements from both Prayag, Hosany, Nunkoo, and Alders (2013) and Ma, Ma, Wu, and Rotherham (2013) were revised. The results indicate that the IRT approach yields invariant item parameters (i.e., discrimination and difficulty). In addition, advantages and utility of IRT in the sporting event context are discussed.
Ilse-Yazmín Arciniega-Carreón,María-Guadalupe Ramírez-Sotelo,Ana C. Ramos-Valdivia,Carlos Edmundo Salas,Arturo Ortega,Carmen Oliver-Salvador 한국원예학회 2020 Horticulture, Environment, and Biotechnology Vol.61 No.6
Ibervillea sonorae (S. Watson) Greene, (huereque) is an endemic shrub whose roots are used in traditional medicine to treatdiabetes. Here, we establish cell cultures of I. sonorae to evaluate the presence of antidiabetic metabolites. Stem and rootssections were incubated on media with diff erent concentrations of growth regulators to induce calli. Using B5 mediumcontaining 25 g L −1 sucrose, 150 mg L −1 ascorbic acid, 6 g L −1 agar–agar, supplemented with 0.5 mg L −1 α-naphthaleneaceticacid, 0.5 mg L −1 benzyladenine and 1 mg L −1 indole-3-acetic acid, 95% calli induction was attained. Flavonoids andphenols in I. sonorae cultured cell suspension were investigated. The methanol extracts exhibited antioxidant activity thatwas attributed to phenolic compounds. These extracts stimulated glucose uptake more effi caciously than I. sonorae plantroots. This study demonstrates that in vitro cultured cells stand as a good option for production of hypoglycemic metabolites.
Tommaso Giuliani,Maria Lopez Rubio,Eva Montalva Oron,Javier Maupoey Ibanez,Andrea Bosca Robledo,Cecilia Lopez Valdivia,Judith Perez Rojas,Rafael Lopez Andujar 한국간담췌외과학회 2020 Annals of hepato-biliary-pancreatic surgery Vol.24 No.1
Indications and outcomes of extended pancreatectomies have been recently appraised by the International Study Group for Pancreatic Surgery. However, no definitive conclusions have been drawn, particularly in the setting of neoadjuvant treatments. We present here a case of 53-year-old man diagnosed with a bulky adenocarcinoma of the tail of the pancreas and infiltrating the adjacent organs and the thoracic wall. The patient was sent to neoadjuvant chemotherapy and he underwent 12 cycles of FOLFIRINOX. Since a significant radiological response was observed after chemotherapy, the patient was scheduled for extended distal pancreatectomy with en bloc resection of the thoracic wall, in order to achieve a radical resection. The surgery is herein described with all technical details. The patient was discharged after an uneventful early post-operative course and subsequently readmitted for a late grade B post-operative pancreatic fistula, which was ultimately treated successfully. Pathology showed complete response. When performed in centers with ample experience in pancreatic surgery, extended pancreatic resections represent a viable curative option with acceptable surgical outcomes. In this setting, challenging tailored resections should be considered to achieve negative margins, particularly following maximized effective downstaging strategies.
Edgar Cano-Europa,Rocio Ortiz-Butron,Estela Melendez Camargo,Maria Miriam Esteves-Carmona,Rosa Maria Oliart-Ros,Vanessa Blas-Valdivia,Margarita Franco-Colin 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.11
We investigated the effect of a canola oil-supplemented diet on the metabolic state and diabetic renal function of a type I diabetes experimental model. Male Sprague-Dawley rats were randomly divided into four groups: (1) normoglycemic+chow diet, (2) normoglycemic+a canola oil-supplemented chow diet, (3) diabetic+chow diet, and (4) diabetic+a canola oil-supplemented chow diet. For 15 weeks, animals were fed a diet of Purina rat chow alone or supplemented with 30% canola oil. Energetic intake, water intake, body weight, and adipose tissue fat pad were measured; renal function, electrolyte balance, glomerular filtration rate, and the plasmatic concentration of free fatty acids, cholesterol, triglycerides, and glucose were evaluated. The mesenteric, retroperitoneal, and epididymal fat pads were dissected and weighed. The kidneys were used for lipid peroxidation (LP) and reactive oxygen species (ROS) quantifications. Diabetic rats fed with a canola oilsupplemented diet had higher body weights, were less hyperphagic, and their mesenteric, retroperitoneal, and epididymal fat pads weighed more than diabetic rats on an unsupplemented diet. The canola oil-supplemented diet decreased plasmatic concentrations of free fatty acids, triglycerides, and cholesterol; showed improved osmolarity, water clearances, and creatinine depuration; and had decreased LP and ROS. A canola oil-supplemented diet decreases hyperphagia and prevents lipotoxicity and renal dysfunction in a type I diabetes mellitus model.