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Fu GY, Isaev M, Ku LP, Mikhailov M, Redi MH, Sanchez R, Subbotin A, Cooper WA, Hirshman SP, Monticello DA, Reiman A, Zarnstorff M. Ideal Magnetohydrodynamic Stability of the NCSX. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst07-a1300] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zambrano F, Aguila L, Arias ME, Sanchez R, Felmer R. Effect of sperm pretreatment with glutathione and membrane destabilizing agents lysolecithin and Triton X-100, on the efficiency of bovine intracytoplasmic sperm injection. Reprod Domest Anim 2017; 52:305-311. [PMID: 28058759 DOI: 10.1111/rda.12906] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 11/12/2016] [Indexed: 11/26/2022]
Abstract
Intracytoplasmic sperm injection (ICSI) is an assisted reproduction tool with several applications. Its effectiveness in bovines is lower than that in other species, mainly because of difficulties in the decondensation of the sperm nucleus after injection, and the presence of the acrosome and the plasma membrane which remain intact in this procedure. In this study, we assessed the effect of lysolecithin (LL) and Triton X-100 (TX), in combination with glutathione (GSH) as sperm pretreatments prior to ICSI. The GSH-LL and GSH-TX groups showed 0% of spermatozoa with intact membrane (SYBR 14+/PI), in comparison with the control (63.3%) and GSH (65.7%) groups. The proportions of spermatozoa with damaged acrosome membrane in the GSH-LL, GSH-TX, GSH and control groups were 46%, 35.9%, 10.5% and 7.5%, respectively. Sperm chromatin decondensation analysis showed that the groups incubated for 3 hr with GSH presented greater decondensation (p < .05). Although fertilization was improved in all treatment groups evaluated, no differences were observed in the cleavage rate 72 hr after activation in the GSH (73.7%), GSH-LL (80.2%) and GSH-TX (77.8%) groups compared to the control (66.3%), neither in the blastocyst rate on day 8 (24.0%, 26.2%, 27.1% and 28.4% for the control, GSH, GSH-LL and GSH-TX groups, respectively). No differences were also observed in the total number of cells in all groups. In conclusion, although these sperm treatments promoted nuclear decondensation and induced plasma membrane disruption, these effects were not sufficient to improve bovine embryonic development after ICSI.
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Richer EJ, Sanchez R. Are esophagrams indicated in pediatric patients with spontaneous pneumomediastinum? J Pediatr Surg 2016; 51:1778-1781. [PMID: 27320840 DOI: 10.1016/j.jpedsurg.2016.05.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/25/2016] [Accepted: 05/30/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND/PURPOSE Spontaneous pneumomediastinum is an infrequent condition in pediatric patients. Presenting symptoms include chest pain, dysphagia, or vomiting, without initiating event. Patients may undergo esophagram because of concern for esophageal perforation as the source for pneumomediastinum, however, abnormalities are rarely demonstrated. The objective of this study is to identify whether esophagrams performed on pediatric patients for spontaneous pneumomediastinum are warranted. METHODS An IRB approved, retrospective study was performed. The radiology information system was queried for the keyword "pneumomediastinum" in reports from 2000 to 2016. 27 patients were identified with spontaneous pneumomediastinum, who underwent 28 esophagrams, and 18 patients with pneumomediastinum secondary to blunt trauma, undergoing 20 esophagrams. Imaging findings recorded included presence of pneumothorax or pleural effusion, amount of imaging performed, radiation dose and fluoroscopy time for esophagrams, and type of contrast used. Clinical data recorded included presenting symptoms, presence of fever, and length of hospital stay. RESULTS All esophagrams in patients with both spontaneous and post traumatic pneumomediastinum were negative. Patients were exposed to radiation doses between 61 and 92 μGy m2 during esophagrams. Contrast aspiration occurred in one patient. CONCLUSIONS Esophagrams are not indicated for pediatric patients with spontaneous pneumomediastinum, and may not be warranted in patients with post traumatic pneumomediastinum.
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Ives GC, Demehri FR, Sanchez R, Barrett M, Gadepalli S, Teitelbaum DH. Small Bowel Diameter in Short Bowel Syndrome as a Predictive Factor for Achieving Enteral Autonomy. J Pediatr 2016; 178:275-277.e1. [PMID: 27587075 DOI: 10.1016/j.jpeds.2016.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 07/14/2016] [Accepted: 08/03/2016] [Indexed: 12/14/2022]
Abstract
Children with short bowel syndrome commonly have dilated small bowel. We found that the extent of dilation was associated with bowel length and that both were related to achieving enteral autonomy.
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Román M, Lopez I, Zubiri L, Sanchez R, Salas D, Gardeazabal I, Baraibar I, Santisteban M, Vicent S, Gil-Aldea I, Aguillo MM, Hernandez B, Lopez-Picazo J, Gurpide A, Guruceaga E, Perez-Gracia J, Collantes M, Ecay M, Gil-Bazo I. Id1 and Id3 genes confer poor prognosis in KRAS-mutant (KM) lung adenocarcinoma (LA) patients. Gene silencing reduces metastatic rate to the liver and increases survival. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw383.70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Dykin V, Pázsit I, Sanchez R. Remark on the neutron noise induced by propagating perturbations in an MSR. ANN NUCL ENERGY 2016. [DOI: 10.1016/j.anucene.2015.11.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hurtado G, Carrió E, Palomo A, Campillo M, Mateu G, Farre A, Marti J, Sanchez R, Fortuny J. Descriptive study of hypothyroidism in an acute psychiatric unit in Barcelona. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
IntroductionBehavioural, psychological and cognitive disturbance have been associated with hypothyroidism, even it has been suggested that this symptoms may remain despite adequate replacement therapy with thyroxine.ObjectiveTo describe prevalence, sociodemographics and clinical features of patients with hypothyroidism in an acute psychiatric unit.AimsTo know about the relation between hypothyroidism and psychiatric symptoms.MethodsData base collection of all patients admitted between 2010 and 2014 in the acute unit of our psychiatric hospital in Barcelona, was analyzed using SPSS program.ResultsIn all 3.1% of the 4536 total patients had hypothyroidism. Among them, 46% were duplicate cases. Mean age was 53 ± 14.27 years. A total of 82.7% were woman. Patients having a TSH lower than 0.30 were 12%, TSH normal were 60.2%, TSH higher than 5 were 27.8%. Most frequent Levothyroxine dosage was: 75 μg (22.1%), 100 μg (19%), 25 μg (12.5%) and 125 μg (12.5%). Diagnosis more frequently associated with hypothyroidism was: Bipolar (26.5%), Schizophrenia (20%), Depression (15.1%), Unspecified psychosis (10%), Personality disorder (10%), Schizoaffective disorder (7.2%), Paranoia 4.3%.ConclusionMost of patients were stable of thyroid condition when had been admitted to our hospital. Hypothyroidism could be a relapse factor, even when treatment is adequate. Affective disorders are more frequently related with hypothyroidism (lithium has to be consider a confounding factor).Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Grifell M, Galindo L, Campillo M, Gonzalez L, Palomo A, Diez-aja C, Grau A, San-Emeterio L, Ibarra M, Sanchez R, Martín L, García L, Orejas O, Salvador T, Manteca H, Pérez V. Evolution of diagnostic frequency in schizophrenia spectrum disorders in Acute Psychiatric Unit in Barcelona. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
IntroductionSeveral studies have suggested variations in the prevalence of schizophrenia spectrum disorders diagnosis across time. This could be due to a change in diagnostic practice motivated either for changes in DSM criteria as for local culture factors. The aim of this study is to explore the evolution of the schizophrenia spectrum disorders. We hypothesize that we would observe a transference from the schizophrenia diagnosis to psychosis not otherwise specified.MethodsA retrospective review of all psychiatric discharges in acute unit in the INAD of Parc de Salut Mar of Barcelona, between 2002 and 2014 was performed, relating each discharge to its axis I psychiatric diagnostic. An ANOVA analysis was used to calculate the differences between the months and the frequency of the diagnosis.ConclusionWe have not been able to observe any transference between diagnoses across years. We observe a decrease of the proportion of schizophrenic spectrum disorders in its prevalence at discharge from 2012 to 2014. The proportion of not otherwise specified psychosis remains quite constant as a third of the schizophrenia diagnoses.Disclosure of interestThe authors report no conflict of interest in this study. LG is funded by the Instituto.de.Salud.Carlos.III (CM14/00111).
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Zhou G, Yu J, Wang A, Liu SH, Sinnett-Smith J, Wu J, Sanchez R, Nemunaitis J, Ricordi C, Rozengurt E, Brunicardi FC. Metformin Restrains Pancreatic Duodenal Homeobox-1 (PDX-1) Function by Inhibiting ERK Signaling in Pancreatic Ductal Adenocarcinoma. Curr Mol Med 2016; 16:83-90. [PMID: 26695692 PMCID: PMC4994969 DOI: 10.2174/1566524016666151222145551] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 11/20/2015] [Accepted: 12/15/2015] [Indexed: 02/06/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most potent and perilous diseases known, with a median survival rate of 3-5 months due to the combination of only advanced stage diagnosis and ineffective therapeutic options. Metformin (1,1-Dimethylbiguanide hydrochloride), the leading drug used for type 2 diabetes mellitus, emerges as a potential therapy for PDAC and other human cancers. Metformin exerts its anticancer action via a variety of adenosine monophosphate (AMP)-activated protein kinase (AMPK)- dependent and/or AMPK-independent mechanisms. We present data here showing that metformin downregulated pancreatic transcription factor pancreatic duodenal homeobox-1 (PDX-1), suggesting a potential novel mechanism by which metformin exerts its anticancer action. Metformin inhibited PDX-1 expression at both protein and mRNA levels and PDX-1 transactivity as well in PDAC cells. Extracellular signal-regulated kinase (ERK) was identified as a PDX-1-interacting protein by antibody array screening in GFP-PDX-1 stable HEK293 cells. Co-transfection of ERK1 with PDX-1 resulted in an enhanced PDX-1 expression in HEK293 cells in a dose-dependent manner. Immunoprecipitation/Western blotting analysis confirmed the ERK-PDX-1 interaction in PANC-1 cells stimulated by epidermal growth factor (EGF). EGF induced an enhanced PDX-1 expression in PANC-1 cells and this stimulation was inhibited by MEK inhibitor PD0325901. Metformin inhibited EGF-stimulated PDX-1 expression with an accompanied inhibition of ERK kinase activation in PANC- 1 cells. Taken together, our studies show that PDX-1 is a potential novel target for metformin in PDAC cells and that metformin may exert its anticancer action in PDAC by down-regulating PDX-1 via a mechanism involving inhibition of ERK signaling.
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Huanca W, Turin J, Mamani C, Sanchez R, Huanca WF, Huanca T. 77 USE OF SEMINAL PLASMA TO IMPROVE REPRODUCTIVE PERFORMANCE IN ALPACAS (VICUGNA PACOS) FOLLOWING NATURAL MOUNTING. Reprod Fertil Dev 2016. [DOI: 10.1071/rdv28n2ab77] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Alpacas are classified as induced ovulators, and an external stimulus is required for the occurrence of ovulation. The seminal plasma (SP) of camelids contains a protein identified as β nerve growth factor with the capacity to induce ovulation and corpus luteum formation. Alpacas have a poor reproductive efficiency and high embryo mortality rate. A study was designed to evaluate the use of SP to improve reproductive performance post natural mating (Exp. 1) and with different mounting time (MT; Exp. 2). Experiment 1: Nonpregnant alpacas (n = 117) exhibiting a dominant follicle = 7 mm, detected by transrectal ultrasonography, were bred by natural mating and then assigned randomly to 1 of 3 treatments: T1 (n = 40), 1 mL of SP IM; T2 (n = 39), 1 mL of GnRH analogue (0.0042 mg of buserelin acetate), IM; and T3 (n = 38), control. Experiment 2: Nonpregnant alpacas (n = 180) exhibiting a follicle = 7 mm were assigned randomly to the following treatments: T1 (n = 30): MT 5 min; T2 (n = 30): MT 5 min + 1 mL of SP; T3 (n = 30): MT 10 min; T4 (n = 30): MT 10 min + 1 mL of SP; T5 (n = 30): MT > 15 min; T6 (n = 30): MT > 15 min + 1 mL of SP. The same male was used for mating females in T1 and T2, T3 and T4, and T5 and T6, respectively. Animals were evaluated by ultrasound with an Aloka SSD 500 (Aloka, Tokyo, Japan) and 5.0-MHz linear transducer on Day 25 for pregnancy diagnosis. In Exp. 1 the conception rate was 67.5, 51.3, and 55.3% for T1, T2, and T3, respectively (P > 0.05). In Exp. 2 the conception rate was 46.2, 67.9, 57.1, 73.3, 61.8, and 72.7% for T1, T2, T3, T4, T5, and T6 (P < 0.05) and was significantly different between T1 v. T2 and T3 v. T4. The results suggest that the use of SP could be one method to improve reproductive performance in alpacas.
Research was supported by Project N° 405-PNICP-PIAP-UNMSM.
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Díaz R, Torres MA, Bravo S, Sanchez R, Sepúlveda N. Determination of fatty acid profile in ram spermatozoa and seminal plasma. Andrologia 2015; 48:723-6. [DOI: 10.1111/and.12506] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2015] [Indexed: 11/30/2022] Open
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Rosich Andreu S, Moreno Muñoz G, Marin Corral J, Machado E, Sanchez R, Vilanova À, Olono M, Bodí MA, Rodríguez AH, Sandiumenge Camps A. Urinary and serum benzodiazepine determinations and its correlation with the sedation wakening in critical care patients. Intensive Care Med Exp 2015. [PMCID: PMC4796252 DOI: 10.1186/2197-425x-3-s1-a330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Domina JG, Sanchez R, Meesa IR, Christodoulou E. Evaluation of pediatric VCUG at an academic children's hospital: is the radiographic scout image necessary? Pediatr Radiol 2015; 45:855-61. [PMID: 25501465 DOI: 10.1007/s00247-014-3241-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 09/30/2014] [Accepted: 11/12/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND There is heterogeneity in how pediatric voiding cystourethrography (VCUG) is performed. Some institutions, including our own, obtain a radiographic scout image prior to contrast agent instillation. OBJECTIVE To demonstrate that the radiographic scout image does not augment VCUG interpretation or contribute management-changing information but nonetheless carries a non-negligible effective dose. MATERIALS AND METHODS We evaluated 181 children who underwent VCUG in 2012, with an age breakdown of less than 1 year (56 children), 1-5 years (66 children), 6-10 years (43 children) and 11-18 years (16 children), with a mean age of 4.0 years. We investigated patient demographics, clinical indication for the examination, scout image findings and estimated effective radiation dose, as well as overall exam findings and impression. RESULTS No clinically significant or management-changing findings were present on scout images, and no radiopaque urinary tract calculi or concerning incidental finding was identified. Scout image estimated effective radiation dose averaged 0.09 mSv in children younger than 1 y, 0.09 mSv in children age 1-5, 0.13 mSv in children age 6-10 and 0.18 mSv in children age 11-18. Total fluoroscopy time per examination averaged 36.7 s (range 34.8-39.6 s for all age group averages). Evaluation of known or suspected vesicoureteral reflux (VUR) and urinary tract infection (UTI) were the most common clinical indications, stated in 40.9% and 37.0% of exams, respectively. CONCLUSION Although the estimated effective dose is low for VCUG radiographic scout images, this step did not augment VCUG interpretation or contribute management-changing information. This step should be omitted or substituted to further reduce dose in pediatric VCUG.
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Ramirez A, Sanchez R. PP.LB02.05. J Hypertens 2015. [DOI: 10.1097/01.hjh.0000468570.50136.78] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dillman JR, Smith EA, Davenport MS, DiPietro MA, Sanchez R, Kraft KH, Brown RKJ, Rubin JM. Can Shear-Wave Elastography be Used to Discriminate Obstructive Hydronephrosis from Nonobstructive Hydronephrosis in Children? Radiology 2015; 277:259-67. [PMID: 25965902 DOI: 10.1148/radiol.2015142884] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To determine if ultrasonographic (US) renal shear-wave speed (SWS) measurements obtained either before or after intravenous diuretic administration can be used to discriminate obstructive hydronephrosis from unobstructive hydronephrosis in children, with diuretic renal scintigraphy as the reference standard. MATERIALS AND METHODS Institutional review board approval and parental informed consent were obtained for this HIPAA-compliant prospective cross-sectional blind comparison with a reference standard. Between November 2012 and September 2014, 37 children (mean age, 4.1 years; age range, 1 month to 17 years) underwent shear-wave elastography of the kidneys immediately before and immediately after diuretic renal scintigraphy (reference standard for presence of urinary tract obstruction). Median SWS measurements (in meters per second), as well as change in median SWS (median SWS after diuretic administration minus median SWS before diuretic administration) were correlated with the amount of time required for kidney radiotracer activity to fall by 50% after intravenous administration of the diuretic (T1/2). Median SWS measurements were compared with degree of obstruction and degree of hydronephrosis with analysis of variance. Receiver operating characteristic (ROC) curves were created. RESULTS Radiotracer T1/2 values after diuretic administration did not correlate with median SWS measurements obtained before (r = -0.08, P = .53) or after (r = -0.0004, P >.99) diuretic administration, nor did they correlate with intraindividual change in median SWS (r = 0.07, P = .56). There was no significant difference in pre- or postdiuretic median SWS measurements between kidneys with scintigraphic evidence of no, equivocal, or definite urinary tract obstruction (P > .5) or for median SWS measurements between kidneys with increasing degree of hydronephrosis (P > .5). ROC curves showed poor diagnostic performance of median SWS in discerning no, equivocal, or definite urinary tract obstruction (area under the ROC curve ranged from 0.50 to 0.62). CONCLUSION US SWS measurements did not enable discrimination of obstructive hydronephrosis from unobstructive hydronephrosis in children.
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Garcia J, Sanchez R, Bassa P, Moragas M, Soler M. Diffuse tracheobronchial tree infiltration diagnosed by 18-fluoro-2-deoxyglucose positron emission tomography/computed tomography. Rev Esp Med Nucl Imagen Mol 2015. [DOI: 10.1016/j.remnie.2015.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gonzales GF, Sanchez R, Rojas M, Henkel R. Eduardo Bustos-Obregón (1937-2014). Andrologia 2015; 47:1-2. [DOI: 10.1111/and.12381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Isachenko V, Isachenko E, Sanchez R, Dattena M, Mallmann P, Rahimi G. Cryopreservation of Whole Ovine Ovaries with Pedicles as a Model for Human: Parameters of Perfusion with Simultaneous Saturations by Cryoprotectants. Clin Lab 2015; 61:415-20. [DOI: 10.7754/clin.lab.2014.140919] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Arias ME, Sanchez R, Felmer R. 320 EFFECTS OF DIFFERENT ACTIVATION REGIMENS ON PRONUCLEAR FORMATION AND PRE-IMPLANTATION DEVELOPMENTAL COMPETENCE OF IN VITRO-MATURED BOVINE OOCYTES AFTER INTRACYTOPLASMIC SPERM INJECTION. Reprod Fertil Dev 2015. [DOI: 10.1071/rdv27n1ab320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Intracytoplasmic sperm injection (ICSI) is an assisted reproductive technique that has been used with considerable success in humans; however, in the bovine species the efficiency of this technique is far from optimal. The objective of the present study was to evaluate the effect of 4 chemical activation treatments, 6-dimethylaminopurine (DMAP), cycloheximide (CHX), anisomycin (ANY), and ethanol (EtOH) on the pronuclear formation and embryo development of bovine embryos generated by ICSI. Cumulus-oocyte complexes were aspirated from abattoir ovaries, selected, and matured in 400-µL drops of standard TCM-199 maturation medium for 22 h at 38.5°C and 5% CO2. The ICSI was performed by a standard procedure. Injected oocytes were randomly distributed and activated by 5 µM ionomycin for 5 min (Io) followed by i) 5 µg mL–1 CHX for 5 h (Io/CHX), ii) 3 h window followed by a second Io treatment plus 1.9 mM DMAP for 4 h (2Io/DMAP), iii) 1 µg mL–1 ANY for 5 h (Io/ANY), and iv) 3 h window followed by 7% ethanol (Io/EtoH). Embryos were cultured in 50-µL drops of KSOM medium under mineral oil at 38.5°C and 5% CO2, 5% O2, and 90% N2. Cleavage was recorded at 72 h and blastocyst rate at 192 h. Pronuclear formation analysis was carried out at 18 hpa with Hoechst staining. An oocyte was considered fertilized when 2 polar bodies and 1 female and 1 male pronucleus (or a decondensed sperm head) could be observed. The data were transformed to arcsine, analysed by ANOVA, and means were compared using Tukey's test with Statgraphics Plus 2 Software. Results with a total of 431 injected oocytes (114, 104, 101, and 112 for DMAP, CHX, ANY, and EtOH, respectively) showed differences in cleavage (P < 0.01) in DMAP, CHX, and ANY treatments (86, 72, and 78%, respectively), relative to EtOH (12%). Similarly, the rate of blastocysts/injected oocyte at 192 h was higher with DMAP, CHX, and ANY (41, 20, and 32%, respectively), relative to EtOH (4%). Sham-injected oocytes showed cleavage and blastocyst rates of 67, 43, 68, and 12% and 32, 11, 19, and 5%, for DMAP, CHX, ANY, and EtOH, respectively. Despite the higher developmental rate observed with DMAP, pronuclear formation assessment revealed that fertilization rate was higher in CHX (87%) and ANY (75%) treatments relative to DMAP (35%). In conclusion, the results of the present study show that activation of bovine oocytes after ICSI is more efficient with DMAP and ANY, compared with CHX and EtOH.Provision of ovaries by our local slaughterhouse (Frigorifico Temuco, Chile) and funding support from FONDECYT 1120241 CONICYT, Chile, are gratefully acknowledged.
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Garcia JR, Sanchez R, Bassa P, Moragas M, Soler M. [Diffuse tracheobronchial tree infiltration diagnosed by 18-fluoro-2-deoxyglucose positron emission tomography/computed tomography]. Rev Esp Med Nucl Imagen Mol 2014; 34:213-4. [PMID: 25481505 DOI: 10.1016/j.remn.2014.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 10/30/2014] [Accepted: 10/31/2014] [Indexed: 10/24/2022]
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Tatlock S, Grant L, Arbuckle R, Khan I, Manvelian G, Sanchez R. Development And Content Validity Testing Of A Treatment Acceptance Measure For Use In Hypercholesterolemia Patients Receiving Treatment Via Subcutaneous Injection. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A569. [PMID: 27201898 DOI: 10.1016/j.jval.2014.08.1898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Blake M, Macedo O, Corona F, Bacon-Fonseca L, Mendez G, Sanchez R, Arrieta O. Locoregional Control and Toxicity After Treatment With Intensity Modulated Radiation Therapy (IMRT) to the Thoracic Cavity in Patients With Nonmetastatic Malignant Pleural Mesothelioma (MPM): A Feasibility Study. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.08.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Albala B, Lera M, Sanchez R, Angel B, Fuentes W, Dangour D, Uauy D. P068: Physical performance predicts 2y incidence of dementia. Eur Geriatr Med 2014. [DOI: 10.1016/s1878-7649(14)70243-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Blake M, Macedo O, Corona F, Bacon-Fonseca L, Mendez G, Sanchez R, Arrieta O. Locoregional Control and Toxicity After Treatment With Intensity Modulated Radiation Therapy (IMRT) to the Thoracic Cavity in Patients With Nonmetastatic Malignant Pleural Mesothelioma (MPM): A Feasibility Study. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Bissell ML, Papuga J, Naïdja H, Kreim K, Blaum K, De Rydt M, Garcia Ruiz RF, Heylen H, Kowalska M, Neugart R, Neyens G, Nörtershäuser W, Nowacki F, Rajabali MM, Sanchez R, Sieja K, Yordanov DT. Proton-neutron pairing correlations in the self-conjugate nucleus (38)K probed via a direct measurement of the isomer shift. PHYSICAL REVIEW LETTERS 2014; 113:052502. [PMID: 25126913 DOI: 10.1103/physrevlett.113.052502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Indexed: 06/03/2023]
Abstract
A marked difference in the nuclear charge radius was observed between the I^{π}=3^{+} ground state and the I^{π}=0^{+} isomer of ^{38}K and is qualitatively explained using an intuitive picture of proton-neutron pairing. In a high-precision measurement of the isomer shift using bunched-beam collinear laser spectroscopy at CERN-ISOLDE, a change in the mean-square charge radius of ⟨r_{c}^{2}⟩(^{38}K^{m})-⟨r_{c}^{2}⟩(^{38}K^{g})=0.100(6) fm^{2} was obtained. This is an order of magnitude more accurate than the result of a previous indirect measurement from which it was concluded that both long-lived states in ^{38}K have similar charge radii. Our observation leads to a substantially different understanding since the difference in charge radius is, moreover, opposite in sign to previously reported theoretical predictions. It is demonstrated that the observed isomer shift can be reproduced by large-scale shell-model calculations including proton and neutron excitations across the N,Z=20 shell gaps, confirming the significance of cross-shell correlations in the region of ^{40}Ca.
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