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Parra M, Aldabaldetrecu M, Arce P, Soto-Aguilera S, Vargas R, Guerrero J, Tello M, Modak B. [Cu(NN 1) 2]ClO 4, a Copper (I) Complex as an Antimicrobial Agent for the Treatment of Piscirickettsiosis in Atlantic Salmon. Int J Mol Sci 2024; 25:3700. [PMID: 38612511 PMCID: PMC11011784 DOI: 10.3390/ijms25073700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/18/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
Piscirickettsia salmonis is the pathogen that most affects the salmon industry in Chile. Large quantities of antibiotics have been used to control it. In search of alternatives, we have developed [Cu(NN1)2]ClO4 where NN1 = 6-((quinolin-2-ylmethylene)amino)-2H-chromen-2-one. The antibacterial capacity of [Cu(NN1)2]ClO4 was determined. Subsequently, the effect of the administration of [Cu(NN1)2]ClO4 on the growth of S. salar, modulation of the immune system and the intestinal microbiota was studied. Finally, the ability to protect against a challenge with P. salmonis was evaluated. The results obtained showed that the compound has an MIC between 15 and 33.9 μg/mL in four isolates. On the other hand, the compound did not affect the growth of the fish; however, an increase in the transcript levels of IFN-γ, IL-12, IL-1β, CD4, lysozyme and perforin was observed in fish treated with 40 μg/g of fish. Furthermore, modulation of the intestinal microbiota was observed, increasing the genera of beneficial bacteria such as Lactobacillus and Bacillus as well as potential pathogens such as Vibrio and Piscirickettsia. Finally, the treatment increased survival in fish challenged with P. salmonis by more than 60%. These results demonstrate that the compound is capable of protecting fish against P. salmonis, probably by modulating the immune system and the composition of the intestinal microbiota.
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Affiliation(s)
- Mick Parra
- Laboratory of Natural Products Chemistry, Centre of Aquatic Biotechnology, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile;
- Laboratory of Bacterial Metagenomic, Centre of Aquatic Biotechnology, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile; (S.S.-A.); (R.V.)
| | - Maialen Aldabaldetrecu
- Laboratory of Coordination Compounds and Supramolecularity, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile; (M.A.); (P.A.); (J.G.)
| | - Pablo Arce
- Laboratory of Coordination Compounds and Supramolecularity, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile; (M.A.); (P.A.); (J.G.)
| | - Sarita Soto-Aguilera
- Laboratory of Bacterial Metagenomic, Centre of Aquatic Biotechnology, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile; (S.S.-A.); (R.V.)
| | - Rodrigo Vargas
- Laboratory of Bacterial Metagenomic, Centre of Aquatic Biotechnology, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile; (S.S.-A.); (R.V.)
- Aquaculture Production Unit, Universidad of Los Lagos, Osorno 5290000, Chile
| | - Juan Guerrero
- Laboratory of Coordination Compounds and Supramolecularity, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile; (M.A.); (P.A.); (J.G.)
| | - Mario Tello
- Laboratory of Bacterial Metagenomic, Centre of Aquatic Biotechnology, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile; (S.S.-A.); (R.V.)
| | - Brenda Modak
- Laboratory of Natural Products Chemistry, Centre of Aquatic Biotechnology, Faculty of Chemistry and Biology, University of Santiago of Chile, Santiago 9160000, Chile;
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Martínez-Moya M, Guerrero J, Girela JL, Pitas A, Bernabeu A, Bernabeu R, Castillo JC. Micronized natural progesterone (Seidigestan ®) vs GnRH antagonists for preventing the LH surge during controlled ovarian stimulation (PRO_NAT study): study protocol of a randomized clinical trial. Front Endocrinol (Lausanne) 2024; 15:1350154. [PMID: 38577571 PMCID: PMC10991791 DOI: 10.3389/fendo.2024.1350154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/16/2024] [Indexed: 04/06/2024] Open
Abstract
Introduction Progesterone-primed cycles effectively suppress the pituitary LH surge during ovarian stimulation in oocyte donors and in the infertile population. Particularly in oocyte donors, the use of synthetic progesterone (progestins) has been explored in prospective clinical trials, showing mixed results. This trial was designed to determine whether the use of micronized natural progesterone is as effective as the GnRH-antagonist protocol in terms of the number of mature oocytes (MII) retrieved in oocyte donation cycles as a primary outcome, and it also aims to explore the corresponding results in recipients as a secondary outcome. Methods We propose a prospective, open-label, non-inferiority clinical trial to compare a novel approach for oocyte donors with a control group, which follows the standard ovarian stimulation protocol used in our institution. A total of 150 donors (75 in each group) will be recruited and randomized using a computer algorithm. After obtaining informed consent, participants will be randomly assigned to one of two ovarian stimulation protocols: either the standard GnRH antagonist or the oral micronized natural progesterone protocol. Both groups will receive recombinant gonadotropins tailored to their antral follicle count and prior donation experiences, if any. The primary outcome is the number of mature metaphase II (MII) oocytes. Secondary measures include treatment duration, pregnancy outcomes in recipients, as well as the economic cost per MII oocyte obtained in each treatment regimen. Analyses for the primary outcome will be conducted in both the intention-to-treat (ITT) and per-protocol (PP) populations. Each donor can participate only once during the recruitment period. The estimated duration of the study is six months for the primary outcome and 15 months for the secondary outcomes. Discussion The outcomes of this trial have the potential to inform evidence-based adjustments in the management of ovarian stimulation protocols for oocyte donors. Clinical trial registration ClinicalTrials.gov, identifier, NCT05954962.
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Affiliation(s)
| | | | | | - A. Pitas
- Bernabeu Institute, Alicante, Spain
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Lledo B, Marco A, Morales R, Ortiz JA, García-Hernández E, Lozano FM, Cascales A, Guerrero J, Bernabeu A, Bernabeu R. Identification of novel candidate genes associated with meiotic aneuploidy in human embryos by whole-exome sequencing. J Assist Reprod Genet 2023:10.1007/s10815-023-02825-9. [PMID: 37171739 DOI: 10.1007/s10815-023-02825-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/04/2023] [Indexed: 05/13/2023] Open
Abstract
PURPOSE To identify novel genetic variants responsible for meiotic embryonic aneuploidy. METHODS A prospective observational cohort study that included 29 couples who underwent trophectoderm biopsies from 127 embryos and performed whole-exome sequencing (WES) between November 2019 and March 2022. Patients were divided into two groups according to the expected embryo aneuploidy rate based on maternal age. RESULTS After variant filtering in the WES analysis of 58 patients/donors, five heterozygous variants were identified in female partners from the study group that had an impact on embryo aneuploidy. Additionally, a slowdown in embryo development and a decrease in the number of blastocysts available for biopsy were observed in the study group embryos. CONCLUSION This study has identified new candidate genes and variants not previously associated with meiotic embryo aneuploidy, but which are involved in important biological processes related to cell division and chromosome segregation. WES may be an efficient tool to identify patients with a higher-than-expected risk of embryo aneuploidy based on maternal age and allow for individualized genetic counselling prior to treatment.
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Affiliation(s)
- B Lledo
- Instituto Bernabeu Biotech, 03016, Alicante, Spain.
| | - A Marco
- Instituto Bernabeu Biotech, 03016, Alicante, Spain
| | - R Morales
- Instituto Bernabeu Biotech, 03016, Alicante, Spain
| | - J A Ortiz
- Instituto Bernabeu Biotech, 03016, Alicante, Spain
| | | | - F M Lozano
- Instituto Bernabeu Biotech, 03016, Alicante, Spain
| | - A Cascales
- Instituto Bernabeu Biotech, 03016, Alicante, Spain
| | - J Guerrero
- Instituto Bernabeu of Fertility and Gynaecology, 03016, Alicante, Spain
| | - A Bernabeu
- Instituto Bernabeu of Fertility and Gynaecology, 03016, Alicante, Spain
- Cátedra de Medicina Comunitaria y Salud Reproductiva, Miguel Hernández University, Alicante, Spain
| | - R Bernabeu
- Instituto Bernabeu of Fertility and Gynaecology, 03016, Alicante, Spain
- Cátedra de Medicina Comunitaria y Salud Reproductiva, Miguel Hernández University, Alicante, Spain
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Cáceres-Vásquez J, Jara DH, Costamagna J, Martínez-Gómez F, Silva CP, Lemus L, Freire E, Baggio R, Vera C, Guerrero J. Correction: Effect of non-covalent self-dimerization on the spectroscopic and electrochemical properties of mixed Cu(i) complexes. RSC Adv 2023; 13:11296. [PMID: 37057271 PMCID: PMC10086661 DOI: 10.1039/d3ra90033a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 04/15/2023] Open
Abstract
[This corrects the article DOI: 10.1039/D2RA05341A.].
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Affiliation(s)
- Joaquín Cáceres-Vásquez
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
| | - Danilo H Jara
- Facultad de Ingenieria y Ciencias, Universidad Adolfo Ibáñez Av. Padre Hurtado 750 Viña del Mar Chile
| | - Juan Costamagna
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
- Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
| | - Fabián Martínez-Gómez
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
- Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
| | - Carlos P Silva
- Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
| | - Luis Lemus
- Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
| | - Eleonora Freire
- Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica Avenida Gral. Paz 1499, 1650, San Martín Buenos Aires Argentina
- Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, Argentina and Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica Buenos Aires Argentina
- Member of CONICET Argentina
| | - Ricardo Baggio
- Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica Avenida Gral. Paz 1499, 1650, San Martín Buenos Aires Argentina
| | - Cristian Vera
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
| | - Juan Guerrero
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de Chile Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33 Santiago Chile
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Penninti P, Guerrero J. Living donor liver transplant: A strategy to increase transplant access. Clin Liver Dis (Hoboken) 2023; 21:89-91. [PMID: 37095777 PMCID: PMC10121436 DOI: 10.1097/cld.0000000000000022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 12/23/2022] [Indexed: 04/26/2023] Open
Affiliation(s)
- Pranav Penninti
- University of Texas Health Science Center at San Antonio, Gastroenterology, Texas, USA
| | - Juan Guerrero
- UT Health San Antonio, Transplant Center, San Antonio, Texas, USA
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Cáceres-Vásquez J, Jara DH, Costamagna J, Martínez-Gómez F, Silva CP, Lemus L, Freire E, Baggio R, Vera C, Guerrero J. Effect of non-covalent self-dimerization on the spectroscopic and electrochemical properties of mixed Cu(i) complexes. RSC Adv 2023; 13:825-838. [PMID: 36686905 PMCID: PMC9810106 DOI: 10.1039/d2ra05341a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 12/06/2022] [Indexed: 01/05/2023] Open
Abstract
A series of six new Cu(i) complexes with ([Cu(N-{4-R}pyridine-2-yl-methanimine)(PPh3)Br]) formulation, where R corresponds to a donor or acceptor p-substituent, have been synthesized and were used to study self-association effects on their structural and electrochemical properties. X-ray diffraction results showed that in all complexes the packing is organized from a dimer generated by supramolecular π stacking and hydrogen bonding. 1H-NMR experiments at several concentrations showed that all complexes undergo a fast-self-association monomer-dimer equilibrium in solution, while changes in resonance frequency towards the high or low field in specific protons of the imine ligand allow establishing that dimers have similar structures to those found in the crystal. The thermodynamic parameters for this self-association process were calculated from dimerization constants determined by VT-1H-NMR experiments for several concentrations at different temperatures. The values for K D (4.0 to 70.0 M-1 range), ΔH (-1.4 to -2.6 kcal mol-1 range), ΔS (-0.2 to 2.1 cal mol-1 K-1 range), and ΔG 298 (-0.8 to -2.0 kcal mol-1 range) are of the same order and indicate that the self-dimerization process is enthalpically driven for all complexes. The electrochemical profile of the complexes shows two redox Cu(ii)/Cu(i) processes whose relative intensities are sensitive to concentration changes, indicating that both species are in chemical equilibrium, with the monomer and the dimer having different electrochemical characteristics. We associate this behaviour with the structural lability of the Cu(i) centre that allows the monomeric molecules to reorder conformationally to achieve a more adequate assembly in the non-covalent dimer. As expected, structural properties in the solid and in solution, as well as their electrochemical properties, are not correlated with the electronic parameters usually used to evaluate R substituent effects. This confirms that the properties of the Cu(i) complexes are usually more influenced by steric effects than by the inductive effects of substituents of the ligands. In fact, the results obtained showed the importance of non-covalent intermolecular interactions in the structuring of the coordination geometry around the Cu centre and in the coordinative stability to avoid dissociative equilibria.
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Affiliation(s)
- Joaquín Cáceres-Vásquez
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de ChileAv. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile
| | - Danilo H. Jara
- Facultad de Ingenieria y Ciencias, Universidad Adolfo IbáñezAv. Padre Hurtado 750Viña del MarChile
| | - Juan Costamagna
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de ChileAv. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile,Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile
| | - Fabián Martínez-Gómez
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de ChileAv. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile,Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile
| | - Carlos P. Silva
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile
| | - Luis Lemus
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile
| | - Eleonora Freire
- Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía AtómicaAvenida Gral. Paz 1499, 1650, San MartínBuenos AiresArgentina,Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, Argentina and Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía AtómicaBuenos AiresArgentina,Member of CONICETArgentina
| | - Ricardo Baggio
- Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía AtómicaAvenida Gral. Paz 1499, 1650, San MartínBuenos AiresArgentina
| | - Cristian Vera
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de ChileAv. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile
| | - Juan Guerrero
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de ChileAv. Libertador Bernardo O'Higgins 3363, Estación Central, Casilla 40, Correo 33SantiagoChile
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Herreros M, Martí L, Díaz N, Arnedo AR, Tió M, Díaz M, Guerrero J, Ortíz J, Ten J, Bernabeu R. Individual or group embryo culture? A pilot study and subsequent prospective randomized trial to evaluate blastocyst formation rate, quality and reproductive outcomes. Reprod Biomed Online 2022. [DOI: 10.1016/j.rbmo.2022.08.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2022]
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Bosch A, Albero S, Guerrero J, Castillo J, Bernabeu A, Ten J, Bernabeu R. P-594 mRNA COVID-19 vaccine does not influence performance during oocyte donation cycles. Hum Reprod 2022. [PMCID: PMC9384417 DOI: 10.1093/humrep/deac107.547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Study question What is the effect of mRNA SARS-CoV-2 vaccines on oocyte donors regarding oocyte quality, embryo development and clinical outcomes? Summary answer Oocyte quality, fertilization, blastocyst formation, embryo quality and pregnancy rates were similar following donors' mRNA SARS-CoV-2 vaccination compared to previous oocyte donation cycles. What is known already The severe acute respiratory syndrome Coronavirus 2 (SARS–CoV-2) infection, urged scientists to develop safe and effective vaccines. During the ongoing pandemic, the scientific community has promoted vaccination programs to reduce morbidity and mortality. While it has been suggested that SARS–CoV-2 infection might impact fertility, limited evidence shows that vaccination has no influence on sperm parameters, follicular steroidogenesis, or oocyte quality and only one study reported no effects on fertilization or top-quality embryos rate in vaccinated patients undergoing IVF. There is a paucity of evidence with regards to younger population undergoing ovarian stimulation. Study design, size, duration This prospective, multicentre cohort study evaluated 32 oocyte donors with two controlled and similar ovarian stimulation, before and after complete SARS-CoV-2 vaccination, between November 2020 and January 2022. A total of 64 oocyte recipient cycles were analysed equally separately into these two groups. Severe male factor was excluded. Participants/materials, setting, methods Complete SARS-CoV-2 vaccination of the oocyte donor made the difference between the two groups of recipients analysed. The time frame between the previous ovarian stimulation and the vaccination was lower than 8 months. We evaluated and compared the rates of matured eggs (metaphase II, MII), the fertilization and blastocyst formation rates, blastocyst quality (A/B ASEBIR categories), positive pregnancy test and clinical pregnancy rates in both groups of recipients. The statistical analysis was performed using SPSS. Main results and the role of chance The average number of MII collected were similar before and following vaccination (12.23 vs 12.91, p = 0.198, respectively). In recipients, the outcomes with regards to fertilization rate (81.4% vs 77.3% p = 0.210), blastocyst formation rate (60.2% vs 61.5%, p = 0.771) and high-quality blastocysts (quality A: 31.1% vs 36.4% and quality B: 29.0% vs 25.1%, p = 0.430) did not differ statistically between the control group (n = 32, pre-vaccination) and the study group (n = 32, post-vaccination), respectively. Furthermore, regarding clinical outcomes, there were not statistically differences in pregnancy rates (64.0% vs 77.4%, p = 0.269) or clinical pregnancy rates (60.0% vs 64.5%, p = 0.729) before and after vaccination respectively. Limitations, reasons for caution Our encouraging results should be interpreted with caution due to the small sample size and the short period of follow-up. Larger controlled trials are needed to corroborate our findings as the countries continue making forward with the vaccination campaign. Wider implications of the findings The present study suggests no influence of mRNA SARS-CoV2 vaccines on donor oocyte cycles, reflecting no detrimental effects on the assisted reproduction outcomes. The safety of SARS-CoV-2 vaccination concerning IVF cycles is encouraging for the medical community and the health of our patients. Trial registration number Not Applicable
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Affiliation(s)
- A Bosch
- Instituto Bernabeu, Embryology Unit , Cartagena, Spain
| | - S Albero
- Instituto Bernabeu, Reproductive Medicine Unit , Alicante, Spain
| | - J Guerrero
- Instituto Bernabeu, Embryology Unit , Alicante, Spain
| | - J.C Castillo
- Instituto Bernabeu, Reproductive Medicine Unit , Alicante, Spain
| | - A Bernabeu
- Instituto Bernabeu, Reproductive Medicine Unit , Alicante, Spain
| | - J Ten
- Instituto Bernabeu, Embryology Unit , Alicante, Spain
| | - R Bernabeu
- Instituto Bernabeu, Reproductive Medicine Unit , Alicante, Spain
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Marti L, Ten J, Herreros M, Diaz N, Rodriguez-Arnedo A, Guerrero J, Ortiz J, Bernabeu A, Bernabeu R. O-099 The use of cumulus cells (CCs) to select spermatozoa for intracytoplasmic sperm injection improves blastocyst development and quality. Hum Reprod 2022. [DOI: 10.1093/humrep/deac105.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Is there a role for sperm selection based on the capacity to pass through cumulus oophorous column in improving the laboratory outcomes in ICSI cycles?
Summary answer
A higher rate of blastocyst formation and quality are obtained with the use of CCs to select spermatozoa for ICSI compared to conventional density gradients.
What is known already
The sperm selection for ICSI is an operator-dependent procedure based on sperm morphology and motility. ICSI bypasses all natural barriers of sperm selection, which may impact embryo development.
During natural fertilization, only the spermatozoa that pass-through cumulus cells will have the chance to fertilize the egg. Spermatozoa capable of traverse COCs have better morphology, higher chromatin integrity and greater acrosomal reaction. Hyaluronic acid is an important component of these cells and plays a key role in the selection of spermatozoa with intact DNA. However, there is scarce data regarding this selection method for ICSI on the development of the embryo.
Study design, size, duration
This is a prospective randomized sibling oocyte pilot study (February-December 2021). A total of 996 metaphase II (MII) oocytes were randomized into two groups. In the control group (Group 0, n = 489 MII), ICSI was performed with sperm selected by conventional density gradients. In the study group (Group 1, n = 507 MII) the oocytes were microinjected with sperm selected through CCs. The main outcome was blastocyst formation rate and quality. Reproductive results were analyzed as secondary outcomes.
Participants/materials, setting, methods
Ninety-eight couples undergoing ICSI (private center) with ≥6 fresh own MII obtained after ovarian stimulation, embryo culture until blastocyst stage and ejaculated sperm samples were included in the study.
All seminal samples were processed using density gradients and those in the study group were additionally passed through CCs (the patient's own CCs were used in all cases).
Fertilization and day 5 blastocyst formation rates were assessed. Embryo quality was scored according to Gardner's criteria.
Main results and the role of chance
Data was similar with regards to cause of infertility, maternal age (36.47 vs 36.63 y.o.), sperm count (60.53 vs 58.25 mill/ml) and progressive motility (57.45 vs 57.50%) between group 0 vs 1, respectively.
Fertilization rate was similar between groups (74.0% vs 78.7%; p = 0.419. Group 0 vs 1, respectively). However, the blastocyst formation rate was significantly higher in the study group compared to control (70.9% vs 60.1%; p = 0.002). In addition, high-quality blastocyst rate was significantly higher in the CCs compared to the control group (49.6% vs 38.5%; p = 0.003). After the analysis of 145 treatments (131 frozen vs 14 fresh transfers) the cumulative clinical pregnancy rate in the study group was 47.2%, higher than in the control group (32.1%), but without reaching statistical difference (p = 0.07).
Limitations, reasons for caution
This is an exploratory study, aimed to evaluate the effectiveness of CCs as a more “physiologic” selection of spermatozoa for ICSI treatments in terms of laboratory outcomes (blastocyst formation rate and quality). Albeit not reaching statistical significance, the higher cumulative pregnancy rate in the study group seems clinically relevant.
Wider implications of the findings
Our results suggest that CCs can select more competent sperm for ICSI. This “physiologic-resembling”, operator-independent selection method has the potential of increasing pregnancy outcomes in ICSI cycles, pending of confirmation in larger studies including cumulative embryo-transfer cycles.
Trial registration number
NA
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Affiliation(s)
- L Marti
- Instituto Bernabeu, Embriology, Alicante , Spain
| | - J Ten
- Instituto Bernabeu, Embriology, Alicante , Spain
| | - M Herreros
- Instituto Bernabeu, Embriology, Alicante , Spain
| | - N Diaz
- Instituto Bernabeu, Embriology, Alicante , Spain
| | | | - J Guerrero
- Instituto Bernabeu, Embriology, Alicante , Spain
| | - J.A Ortiz
- Instituto Bernabeu Biotech, Molecular laboratory, Alicante , Spain
| | - A Bernabeu
- Instituto Bernabeu, Reproductive medicine, Alicante , Spain
| | - R Bernabeu
- Instituto Bernabeu, Reproductive medicine, Alicante , Spain
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Hortal Foronda M, Cascales A, Ortiz J, Lledo B, Guerrero J, Bernabeu A, Bernabeu R. P-575 Follicle-stimulating hormone receptor genotype and its influence on the results of ovarian stimulation using corifollitropin alfa. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Does the follicle-stimulating hormone receptor (FSHR) genotype influence the results of the ovarian stimulation treatment using corifollitropin alfa?
Summary answer
The use of collifolitropin alfa in SS genotype patients appears to be associated with the obtention of a lower number of oocytes and MII.
What is known already
Previous studies suggest that FSH receptor polymorphism in position 680 influences the response to ovarian stimulation: patients with SS genotype perform better with urinary FSH and need a higher dose of FSH to obtain similar results to the SN and NN genotypes.
These differences could be explained by the longer half-life of urinary gonadotropins, which might compensate for the lower affinity of the receptor in SS genotype patients. Our aim was to elucidate whether corifollitropin alfa, a long-acting recombinant FSH, has the same impact with respect to FSH receptor genotypes as recombinant FSH used habitually.
Study design, size, duration
One hundred and fifty-two egg donors were included in a retrospective cohort study between September 2019 and September 2020. In 80 of them, ovarian stimulation treatment was carried out using a single dose of Elonva 150 micrograms (Group 1). In 72 of them, in addition to the 150 microgram dose of Elonva, stimulation was continued with a daily dose of Puregon 225 UI from the eighth day of controlled ovarian stimulation (Group 2).
Participants/materials, setting, methods
To genotype the 680 position of the FSH receptor, a real-time PCR for allelic discrimination was carried out using StepOnePlus™ Real-Time PCR System (Applied Biosystems™). Linear regression analysis was performed to study the differences between the groups doing a correction for the variables anti-müllerian hormone, age and BMI. The statistical analysis was made with Software Statistical Product and Service Solutions, version 20.0 (SPSS, Chicago, IL, EE.UU.).
Main results and the role of chance
Regarding the whole set of patients, the results of ovarian stimulation using corifollitropin alfa are better in egg donors with SN and NN genotypes compared to those with SS genotype. Statistically significant differences were found in the number of retrieved oocytes (15.78 versus 10.83; p = 0.007) and retrieved MII (12.34 versus 9.00; p = 0.026).
There were no statistically significant differences between both groups of genotypes (SN-NN versus SS) in terms of age (24.04 versus 26.44; p = 0.514), BMI (22.22 versus 22.83; p = 0.781), anti-müllerian hormone levels (26.40 versus, 23.58; p = 0.495), antral follicle count (15.57 versus 14.97; p = 0.567) and the number of previous ovarian stimulations (2.71 versus 2.53; p = 0.812).
Studying both treatment groups separately, in Group 2, we find significant differences in the number of retrieved oocytes (17.55 versus 13.06, p = 0.012) and retrieved MII (14.25 versus 11.39; p = 0.031), between SN-NN versus SS, respectively.
On the other hand, in Group 1, we observe a trend towards statistical significance in the number of retrieved oocytes (13.83 versus 7.50, p = 0.089) and retrieved MII (10.24 versus 5.42; p = 0.120) comparing the same groups of genotypes.
Limitations, reasons for caution
The group of egg donors with the SS genotype barely represents 20% of the donors included in the study. This percentage is similar to its prevalence in the general population, so it is necessary to have a large sample size to be able to carry out studies regarding this genotype.
Wider implications of the findings
Despite the fact that corifollitropin alfa has a longer half-life, the results of SS patients do not match the rest of genotypes, so other factors must influence. Therefore, it would be advisable to genotype patients for 680 position of FSHR in order not to treat SS patients with this gonadotropin.
Trial registration number
-
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Affiliation(s)
| | - A Cascales
- Instituto Bernabeu, IB Biotech , Alicante, Spain
| | - J.A Ortiz
- Instituto Bernabeu, IB Biotech , Alicante, Spain
| | - B Lledo
- Instituto Bernabeu, IB Biotech , Alicante, Spain
| | - J Guerrero
- Instituto Bernabeu, Embryology , Alicante, Spain
| | - A Bernabeu
- Instituto Bernabeu, Reproductive Medicine , Alicante, Spain
| | - R Bernabeu
- Instituto Bernabeu, Reproductive Medicine , Alicante, Spain
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11
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Herreros M, Martí L, Díaz N, Tió MC, Rodriguez-Arnedo A, Guerrero J, Ortiz J, Ten J, Bernabeu R. O-063 Impact of group embryo culture vs individual embryo culture strategies on blastocyst rate and quality. Hum Reprod 2022. [DOI: 10.1093/humrep/deac104.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Does group embryo culture improve blastocyst formation compared to individual culture?
Summary answer
Individual culture provides an increased blastocyst formation rate.
What is known already
Embryo culture is one of the most important steps of an IVF treatment. Several studies pointed out that group embryo culture could help embryos with lower potential, through paracrine signaling, to achieve development and improve blastocyst formation rate. On the other hand, this issue continues to be controversial and other studies did not find differences in embryo development when using either method.
Study design, size, duration
A prospective randomized study was performed between January 2020 and December 2021. The data were obtained from 830 embryos that came from 103 egg donation treatments. We defined two groups: individual vs group culture. The number of embryos analyzed in the study was calculated to test a difference of 10% in the rate of blastocyst formation between the two groups.
Participants/materials, setting, methods
A total of 103 ICSI-egg donation cycles with normozoospermic males (fresh samples) were included. After fertilization assessment, zygotes were randomized into two groups; Group 1: individual culture (399 embryos), and Group 2: culture of 2-5 embryos per drop (431 embryos). The embryos were cultured in 35 µl drops of Global Total medium until day 5 when they were classified morphologically according to Gardner criteria (1998). The statistical analysis was performed using SPSS (version 20.0).
Main results and the role of chance
The rate of high-quality embryos on day 3 were similar in Group 1 compared to Group 2 (79.2% vs 81.4%, p = 0.432). However, we observed an increase in the blastocyst formation rate on day 5 (62.9% vs 56.1%, p = 0.048) and a trend for higher embryo quality (A/B blastocysts) (55.9% vs 52%, p = 0.266) in Group 1; compared to Group 2, respectively.
Our data suggest that individual culture increases blastocyst formation rate and may benefit embryo quality on day 5. Our results challenge previous reports suggesting that culture in groups can improve embryo development. As hypothesis, we argue that some of the components that the embryos release to the culture environment during their division may affect the quality of the cohort potentially compromising further development up to the blastocyst stage.
Limitations, reasons for caution
The study is focused on laboratory outcomes until the blastocyst stage. Clinical outcomes were not analyzed.
Wider implications of the findings
Finding the most appropriate embryo culture conditions is essential to improve ART results. Time-lapse systems should be adapted to the use of both individual and group culture dishes. Larger randomized studies are needed in order to reach robust conclusions on the subject.
Trial registration number
NA
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Affiliation(s)
- M Herreros
- Instituto Bernabeu, Reproductive Embriology , Alicante, Spain
| | - L Martí
- Instituto Bernabeu, Reproductive Embriology , Alicante, Spain
| | - N Díaz
- Instituto Bernabeu, Reproductive Embriology , Alicante, Spain
| | - M C Tió
- Instituto Bernabeu, Reproductive Embriology , Alicante, Spain
| | | | - J Guerrero
- Instituto Bernabeu, Reproductive Embriology , Alicante, Spain
| | - J Ortiz
- Instituto Bernabeu Biotech, Molecular Laboratory , Alicante, Spain
| | - J Ten
- Instituto Bernabeu, Reproductive Embriology , Alicante, Spain
| | - R Bernabeu
- Instituto Bernabeu, Reproductive Medicine , Alicante, Spain
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12
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Ten J, Abellán E, Guerrero J, Castillo J, Bernabeu A, Bernabeu R. P-622 Clinical results in hormone replacement versus natural cycle protocols of endometrial preparation for frozen embryo transfer. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
What is the optimal endometrial preparation protocol for a frozen embryo transfer (FET) with regards to clinical results?
Summary answer
A similar pregnancy and miscarriage rate is expected with either protocol of endometrial preparation for frozen embryo transfer.
What is known already
An optimal endometrial preparation for FET is of paramount importance to maximize ART success. However, the optimal endometrial preparation protocol for FET warrants more research and is pending to be determined. In addition, in studies that reviewed the optimal endometrial preparation protocols, few of them analyzed the stage and the number of embryos or other factors such PGT-A.
Study design, size, duration
Multicenter, retrospective cohort evaluation of FET cycles in a private center (August 2020-March 2021). The type of endometrial preparation regime (hormone replacement vs natural cycle) was analyzed according to the following variables: origin of the oocyte (own / donated), single-embryo-transfer, PGT-A, day of embryo development and progesterone values on the day or the day before the embryo transfer procedure. The core outcome variables were pregnancy rate (positive β-hCG), clinical pregnancy and miscarriage rate.
Participants/materials, setting, methods
965 patients coming from autologous or heterologous cycles who performed FET. They were assigned to one group or another depending on the endometrial preparation regime used, either hormone replacement cycle (761) or natural cycle (204).
The normality of the distribution of the variables was assessed using the Shapiro-Wilk test. The statistical analysis was carried out by T-Student (quantitative variables) or Chi-squared test (qualitative variables).
Main results and the role of chance
Statistically significant differences were found between the use of donated oocyte on natural cycle (41.7%) and hormone replacement cycle (55.7%) (p = 0.001). Furthermore, day 5 embryo transfer differed significantly between natural cycle (78.4%) and hormone replacement cycle (86.3%) (p = 0.029), as well as day 6 embryo transfer between natural cycle (21.1%) and hormone replacement cycle (12.5%) (p = 0.029). Likewise, mean progesterone value on the day of the embryo transfer was significantly higher in natural cycle (24.4 ng/mL) than in hormone replacement cycle (18.55 ng/mL) (p = 0.00).
No statistically significant differences were found regarding pregnancy, clinical pregnancy and miscarriage rates between natural cycle (41.7, 31.9 and 23.1%) and hormone replacement cycle (44.7, 33.4 and 22.4%) (p = 0.48, 0.74 and 1.00), respectively. No significant differences were observed between the endometrial preparation regime regarding single-embryo-transfer and PGT-A (p > 0.05).
Limitations, reasons for caution
The inherent limitations of a retrospective study. Different routes of administration and doses of hormones were employed in the hormone replacement cycle. Similarly, natural cycles included: “true” and modified (hCG-triggered) cycles. Obstetric / perinatal outcomes were not evaluated.
Wider implications of the findings
Our results suggest no particular benefit of one protocol over the other in terms of clinical results. Nonetheless, the higher progesterone values detected in natural cycles might be clinically relevant in view of the positive correlation between P4 levels on the day of frozen-thawed embryo transfer (FET) with pregnancy outcomes.
Trial registration number
Not Applicable
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Affiliation(s)
- J Ten
- Instituto Bernabeu, Embryology Unit , Alicante, Spain
| | - E Abellán
- Instituto Bernabeu, Embryology Unit , Albacete, Spain
| | - J Guerrero
- Instituto Bernabeu, Cryobiology Unit , Alicante, Spain
| | - J.C Castillo
- Instituto Bernabeu, Reproductive Medicine , Alicante, Spain
| | - A Bernabeu
- Instituto Bernabeu, Reproductive Medicine , Alicante, Spain
| | - R Bernabeu
- Instituto Bernabeu, Reproductive Medicine , Alicante, Spain
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13
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Quintero ET, Acero A, León M, Zuleta ML, Fernández VP, Charry D, Collazos E, Sanchez NR, Camacho AV, Olarte ÁR, Guerrero J, Pimentel J. Ketamine for resistant depression: a scoping review. Actas Esp Psiquiatr 2022; 50:144-159. [PMID: 35643973 PMCID: PMC10803828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 05/01/2022] [Indexed: 06/15/2023]
Abstract
Ketamine is a fast-acting anesthetic with hypnotic properties. Moreover, could potentially improve affective symptoms in patients with refractory depressive disorder. Objective. explore the scientific literature available until December 10, 2021, about the efficacy and safety of ketamine in patients with treatment-refractory major depressive disorder. Material and methods. Scoping review that included PubMed and Scopus. Records of clinical trials and publications with empirical data in English and Spanish were included.
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Affiliation(s)
| | - Angela Acero
- Medicine School, Universidad de La Sabana, Chía, Colombia
| | - Mateo León
- Medicine School, Fundación Universitaria de Ciencias de la Salud, Bogotá, Colombia
| | | | | | - David Charry
- Medicine School, Universidad de La Sabana, Chía, Colombia
| | | | | | | | | | - Juan Guerrero
- Medicine School, Universidad de La Sabana, Chía, Colombia
| | - Juan Pimentel
- Medicine School, Universidad de La Sabana, Chía, Colombia
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14
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Solley KD, Berges A, Diaz C, Ostrander BT, Ding AS, Larson SA, Frank K, Lee D, Guerrero J, deCarvalho T, Ruppel E, Haileyesus A, Dou Y, Schweitzer S, Pramanik S, Yazdi Y, Parikh KS. Evaluation of Efficacy, Efficiency, and Cell Viability of a Novel Descemet Membrane Endothelial Keratoplasty Graft Preparation Device, DescePrep, in Nondiabetic and Diabetic Human Donor Corneas. Cornea 2021; 41:505-511. [PMID: 34620764 DOI: 10.1097/ico.0000000000002861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/09/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE The purpose of this study was to evaluate the safety, efficacy, and efficiency of a Descemet membrane endothelial keratoplasty (DMEK) graft preparation device, DescePrep, through measurement of graft viability, yield, and preparation time in both healthy and diabetic (high-risk) donor eyes. METHODS Twenty nondiabetic and 10 diabetic donor corneas were processed using DescePrep, which standardizes the liquid bubble technique. Corneas were stained with trypan blue and then processed. Cell counts through specular microscopy, optical coherence tomography imaging, and slit-lamp analysis were used for the evaluation of graft separation and viability in 5 nondiabetic corneas. The remaining 25 corneas (15 nondiabetic and 10 diabetic) were evaluated for preparation success rate and processing time. Ten corneas (5 nondiabetic and 5 diabetic) were randomly selected for further evaluation of global cell loss through staining. RESULTS Ninety-seven percent of corneas (29 of 30) were prepared successfully with DescePrep. The average preparation time was 2.83 ± 1.8 minutes. There was no significant difference in the time of preparation between the nondiabetic and diabetic groups (P = 0.077). The overall average cell death after processing was 7.9% ± 3.7% for all corneas. There was no significant difference in cell viability between diabetic and nondiabetic tissues after DescePrep processing (P = 0.769). CONCLUSIONS DescePrep is a new DMEK preparation technique that can process both nondiabetic and diabetic donor corneas at high yields in minutes. High-yield preparation of diabetic corneas may offer eye banks access to a larger donor , which is important because the demand for DMEK grafts continues to rise worldwide.
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Affiliation(s)
- Katherine D Solley
- Eyedea Medical, Inc., Baltimore, MD; Center for Bioengineering Innovation & Design, Johns Hopkins University, Baltimore, MD; School of Medicine, Johns Hopkins University, Baltimore, MD; Keith Porter Imaging Facility, University of Maryland, Baltimore County, Baltimore, MD; Lions Eye Bank of West Central Ohio, Dayton, OH; CorneaGen, Baltimore, MD; Mid-Atlantic Cornea Consultants, Baltimore, MD; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD; Center for Nanomedicine, Johns Hopkins University School of Medicine, Baltimore, MD; and Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD
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15
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Belchin P, Cabello Y, Sanche. d. Burgos M, Guerrero J, Riva MD, Garcia-Enguidanos A, Izquierdo E, Ordonez D. P–158 Assisted Hatching on D + 3 in order to facilitate trophectoderm biopsy in blastocyst for PGT-A is not advisable in all patients. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Is it useful or beneficial to perform Assisted Hatching (AH) on D + 3 previously to biopsy for PGT-A on blastocyst stage on D + 5?
Summary answer
The routine use of AH on D + 3 to facilitate the embryo biopsy on D + 5 could negatively influence the development of the embryos to blastocyst stage.
What is known already
The blastocyst stage is the optimal stage for performing biopsies for PGT-A, which has been reported as a key factor determining the growing clinical application of this strategy worldwide. For trophectoderm (TE) biopsy, laser-assisted drilling is used to create a zona opening on D + 3 or D + 5 of development. The method of zona opening on D + 3 allows some of the TE cells to herniate during blastocyst formation and expansion, which facilitates the biopsy process. However, this method may result in herniation of inner cell mass cells instead of TE or maybe could affect the development of the embryo to blastocyst stage.
Study design, size, duration
A total of 100 PGT-A cycles were performed in 2019 and 2020. In 78 of them laser-assisted drilling was used to create a zona opening on D + 5 only in those embryos which arrived to blastocyst stage for TE biopsy (Group No-AH). In 22 cycles the same drilling was achieved on D + 3 in all embryos, independently of their quality (Group AH). The average of embryos per cycle in each group was 5 and 4.3 respectively.
Participants/materials, setting, methods
A total of 100 PGT-A cycles coming from 65 patients were studied. The average of the age of the patients was 40.83 (SD 3.45) in the group No-AH vs 42.18 (SD 3.42) in the Group AH (p = 0.108), so the age was not a determining factor for the development of the embryos. We analyzed by χ 2 test differences between groups on fertilization rates, number of embryos, development to blastocyst stage, euploidy and pregnancy rates.
Main results and the role of chance
The fertilization rate was 74.79% (No-AH group) and 68.53% (AH group) with no significative statistical differences (p = 0.12).
In the No-AH group, the TE biopsy was performed on D + 5 in 63 cycles (81%). In the AH group, 41% of cycles didn’t reach the blastocyst stage, obtaining statistical differences between groups (p = 0.035). We found also significant differences in the number of cycles with biopsied blastocyst when we had 1 to 6 embryos/cycle on D + 3 between groups (p = 0.002), without obtaining any blastocyst to be diagnosed in 53% of the cycles in AH group vs 27% in No-AH group. When the number of embryos on D + 3 per cycle was > 6, at least 1 embryo reached the blastocyst stage in both groups, although this number was higher in No-AH group. The rate of biopsied blastocysts was significantly higher in the No-AH group compared to the AH group (46.61 vs 34.69) with a p = 0.031.
The rate of euploid embryos analyzed was 23.30% in the No-AH group compared to 29.41% in the AH group, although no significant differences were found (p = 0.44) between groups.
In the No-AH group, a clinical pregnancy rate of 52.94% was obtained (n = 34) vs 50% in the AH group (n = 4) (p = 0.91).
Limitations, reasons for caution
We have recently started to perform AH on D + 3, so the number of cases is smaller than No-AH group. We use a time lapse incubator in all cases, so in the No-AH the culture dish is changed, disturbing the stable incubation environment, while in the other group it is not.
Wider implications of the findings: The use of AH on D + 3 in order to facilitate the TE biopsy on D + 5 could affect negatively the development of the embryos to blastocyst stage. Its routine use should be avoided based on laboratory workload, mainly if the patient has less than 7 embryos at D + 3.
Trial registration number
Not applicable
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Affiliation(s)
- P Belchin
- Hospital Ruber Juan Bravo Quironsalud, Embryology, Madrid, Spain
| | - Y Cabello
- Overture Life, Embryology, Madrid, Spain
- Hospital Ruber Juan Bravo Quironsalud, Scientific, Madrid, Spain
| | | | - J Guerrero
- Overture Life, Embryology, Madrid, Spain
| | - M D Riva
- Hospital Ruber Juan Bravo Quironsalud, Embryology, Madrid, Spain
| | | | - E Izquierdo
- Hospital Ruber Juan Bravo Quironsalud, Gynaecology, Madrid, Spain
| | - D Ordonez
- Hospital Ruber Juan Bravo Quironsalud, Gynaecology, Madrid, Spain
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16
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Ten J, Guerrero J, Rodríguez-Arnedo A, Martí L, Herreros M, Díaz N, Sellers R, Tió MC, Bernabeu A, Llácer J, Bernabeu R. P–162 Laser-assisted collapse of blastocysts prior to vitrification improves clinical outcomes. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
What is the effect of artificial laser-assisted collapse before vitrification on pregnancy and implantation rates after transfer of vitrified-warmed blastocysts?
Summary answer
The artificial shrinkage by laser-induced collapse before vitrification significantly increased the implantation and clinical pregnancy rates after single thawed embryo transfer.
What is known already
Freeze all, cycle segmentation and, in general, single embryo transfer (SET) strategies (for example trophectoderm biopsy-based aneuploidy testing) have targeted blastocysts vitrification as the best option for reproductive practice worldwide. Artificial shrinkage seems to be a pre-vitrification parameter associated with an increased embryo survival after warming and implantation rate. However, the available medical evidence shows controversial results with only a limited number of prospective studies assessing the subject.
Study design, size, duration
This prospective cohort study evaluated 394 women who underwent a frozen blastocyst transfer at Instituto Bernabeu between July and December 2020. All patients were prepared with substitutive cycle and received single blastocyst embryo transfers.
Participants/materials, setting, methods
Before embryo vitrification on day 5 of development, some expanded and/or early hatching blastocysts (A/B ASEBIR categories) were artificial laser-assisted collapsed. (n = 83, study group). 311 embryos of the same quality and day of development were not collapsed (control group). We compared the embryo survival rate, clinical, implantation and miscarriage rates between groups. The statistical analysis was performed using SPSS (version 20.0).
Main results and the role of chance
The two groups were comparable in terms of maternal age (39.79 ± 3.83, control group; 40.21 ± 4.45, study group; p = 0.341). Embryo survival rate resulted in 100% in both groups.
Regarding clinical outcomes, collapsed blastocysts significantly increased the positive pregnancy test and the clinical pregnancy and implantation rate compared to the control group, respectively (positive test: 69,9% vs 43,4%, p = 0.000018, odds ratio (OR)= 3.02 [95% CI 1.80–5.08]; clinical pregnancy and implantation: 56,6% vs 35,4%, p = 0.000041, OR = 2.39 [95% CI 1.46–3.90]). The miscarriage rate was not affected by the blastocyst collapse effect (23,6% in the control group vs 27,6% in the study group, p = 0.593, OR = 1.23 [95% CI 0.57–2.68]).
Limitations, reasons for caution
This is a non-randomized controlled study. Additional RCTs are warranted to corroborate our findings.
Wider implications of the findings: Considering the large number of blastocyst vitrification cycles that are carried out worldwide, artificial laser-assisted collapse before vitrification has the potential to increase the clinical results in benefit of many patients.
Trial registration number
Not applicable
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Affiliation(s)
- J Ten
- Instituto Bernabeu, Embriology Unit, Alicante, Spain
| | - J Guerrero
- Instituto Bernabeu, Embriology Unit, Alicante, Spain
| | | | - L Martí
- Instituto Bernabeu, Embriology Unit, Alicante, Spain
| | - M Herreros
- Instituto Bernabeu, Embriology Unit, Alicante, Spain
| | - N Díaz
- Instituto Bernabeu, Embriology Unit, Alicante, Spain
| | - R Sellers
- Instituto Bernabeu, Embriology Unit, Alicante, Spain
| | - M C Tió
- Instituto Bernabeu, Embriology Unit, Alicante, Spain
| | - A Bernabeu
- Instituto Bernabeu, Reproductive Medicine Unit, Alicante, Spain
| | - J Llácer
- Instituto Bernabeu, Reproductive Medicine Unit, Alicante, Spain
| | - R Bernabeu
- Instituto Bernabeu, Reproductive Medicine Unit, Alicante, Spain
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17
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Cascales A, Morales R, Lledó B, Ortiz JA, Guerrero J, Llácer J, Bernabeu R. P–550 Clinical outcomes of mosaic embryos are similar between young and older women. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Are there differences in the clinical outcomes of mosaic embryos depending on the female age?
Summary answer
Clinical outcomes of mosaic embryo transfers are similar regardless female age.
What is known already
Chromosomal abnormalities are common in embryos analyzed in preimplantation genetic testing for aneuploidy (PGT-A) cycles. Mosaicism (the presence of two or more chromosomally distinct cell lines) is a usual event in embryos derived from IVF cycles.
Several studies show that mosaic embryos have reduced potential to reach term, compared to euploid embryos. The factors affecting the implantation potential and development of mosaic embryos are controversial. Recently, Victor et al. (2019) argued that mosaic blastocysts generated at younger ages show better outcomes compared to older ages. The aim of this study was to test this hypothesis in our centre.
Study design, size, duration
A total of 136 mosaic embryos from patients undergoing PGT-A cycles from May 2014 to October 2020 were retrospectively analyzed in this study. The blastocyst trophoectoderm biopsies of day 5 and 6 were analysed by aCGH (n = 47, 30.1%) and NGS (n = 109, 69.9%). An embryo was considered mosaic when the percentage of aneuploid cells were 25–50% in aCGH and 20–50% in NGS. Only single embryo transfer cycles were included in the analysis.
Participants/materials, setting, methods
Embryo analysis were performed using Agilent SurePrint G3 8x60K CGH microarrays or Veriseq NGS (Illumina), with previous whole genome amplification. We evaluated if clinical results of mosaic embryos transfers in IVF cycles were correlated with female age. The main outcome measures were β-hCG, implantation rate and ongoing pregnancy rate. β-hCG was measured in blood 14 days after the embryo transfer and was considered positive when it was >2 mUI/ml.The statistical analysis was performed with SPSSv20.0.
Main results and the role of chance
A total of 136 mosaic embryos were included in this study. Overall, we evaluated factors affecting embryo mosaicism implantation potential. Neither the percentage of mosaicism nor the segmental mosaicism were related to mosaic embryo implantation, pregnancy and ongoing pregnancy rates.
To evaluate the impact of female age in clinical outcomes, we established two different groups depending on whether mosaic blastocysts were generated from oocytes retrieved at young maternal ages (≤35 years; n = 62) or at older ages (>35years; n = 74).
No differences were found between groups. Nonetheless, to reduce bias, embryo quality, percentage of mosaicism, segmental mosaicism and whether the transferred embryo was frozen or fresh were included as confounding factors.
The rate of positive β-hCG was similar between groups: 45.2% in ≤ 35y group vs 54.1% in > 35y (p = 0.476). The implantation rate was also similar: 30.6% vs 39.2%% (p = 0.855), respectively. Furthermore, the ongoing pregnancy rate was higher in the >35y group (35.1%), compared to the ≤35y group (19.4%) without reaching statistically significant differences (p = 0.245).
Limitations, reasons for caution
The sample size is a limitation. aCGH test and a different definition for mosaic embryo in terms of percentage of abnormal cells was employed in this study compared to Victor et. al. (2019) study. Larger prospective studies should evaluate the impact of maternal age in the outcome of mosaic embryos.
Wider implications of the findings: Our results challenge that female age is associated with clinical outcomes after the transfer of mosaic embryos. Comparable results were obtained in young and older women. Therefore, in the absence of euploid embryos, mosaic embryos might be considered for transfer and similar outcomes are expected regardless of the maternal age.
Trial registration number
Not applicable
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Affiliation(s)
- A Cascales
- Instituto Bernabeu, Molecular Biology and Genetics, Alicante, Spain
| | - R Morales
- Instituto Bernabeu, Molecular Biology and Genetics, Alicante, Spain
| | - B Lledó
- Instituto Bernabeu, Molecular Biology and Genetics, Alicante, Spain
| | - J A Ortiz
- Instituto Bernabeu, Molecular Biology and Genetics, Alicante, Spain
| | - J Guerrero
- Instituto Bernabeu, Embriology laboratory, Alicante, Spain
| | - J Llácer
- Instituto Bernabeu, Gynaecology, Alicante, Spain
| | - R Bernabeu
- Instituto Bernabeu, Gynaecology, Alicante, Spain
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Castillo JC, Guerrero J, Ten J, Martinez M, Llacer J, Bernabeu A, Bernabeu R. P–701 Fresh vs frozen PGT-A cycles in donor oocyte recipients. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
For donor oocyte recipients, are clinical outcomes superior for fresh versus frozen euploid embryos?
Summary answer
Among donor oocyte recipients receiving euploid embryos, fresh embryos are associated with superior clinical outcomes when compared with frozen embryos.
What is known already
A recent large retrospective cohort national registry study reported that among donor oocyte recipients, fresh embryos were associated with better clinical outcomes when compared with frozen embryos. This finding contrast with data from autologous oocytes. Since embryo quality at embryo transfer (ET) may introduce a significant confounder, the additional analysis of recipients receiving only euploid embryos may add important information on the subject.
Study design, size, duration
Retrospective cohort analysis of PGT-A IVF-cycles of women using donor oocytes resulting in fresh blastocyst ET compared to the first frozen blastocyst ET from freeze-all cycles between 2014 and 2020 at Instituto Bernabeu, Alicante, Spain. A total of 349 donor oocyte cycles were analyzed, in which 211 were fresh and 138 were frozen ETs. Thawed oocytes were not excluded.
Participants/materials, setting, methods
Clinical pregnancy (gestational sac plus embryo heart beating at 6–7 weeks), was the primary outcome measure. Secondary outcomes included pregnancy and early pregnancy loss rate. aCGH platform tested the embryos transferred in fresh whereas either aCGH or NGS platforms were used for embryos submitted to elective frozen cycles. Vitrification was used as cryopreservation technique. Fresh transfers were performed in artificial cycles. Different types of endometrial preparations were used for FET in the study.
Main results and the role of chance
Recipients in the fresh group were significantly younger and had more embryos transferred compared to the frozen group (41.3 vs 42.5 and 1.2 vs 1.1, respectively). More clinical pregnancies were observed in the fresh compared to the frozen group (108/211 versus 54/138, respectively, odds ratio (ODR) 1.63 [95% CI 1.05–2.52]; p = 0.02). Pregnancy rates were also higher in the fresh compared to the frozen group (128/211 versus 63/138, respectively, odds ratio (ODR) 1.83 [95% CI 1.18–2.83]; p = 0.005). Early pregnancy losses were similar in both groups (p = 0.2).
Limitations, reasons for caution
Implantation failure and abnormal male tests were the most frequent indications for PGT-A. Because of the observational nature of the results in this limited sample size, a cause–effect relationship should not be assumed; evidence from larger well-designed randomized control trials is still required before clinical advice can be suggested.
Wider implications of the findings: When PGT-A analysis is deemed to be necessary in oocyte recipients, cryopreservation may have an adverse impact on IVF outcomes. Future studies exploring ET in natural vs artificial cycles are warranted to further isolate the impact of vitrification and the uterine environment on IVF outcomes.
Trial registration number
Not applicable
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Affiliation(s)
- J C Castillo
- INSTITUTO BERNABEU, ASSISTED REPRODUCTION, Alicante, Spain
| | - J Guerrero
- INSTITUTO BERNABEU, ASSISTED REPRODUCTION, Alicante, Spain
| | - J Ten
- INSTITUTO BERNABEU, ASSISTED REPRODUCTION, Alicante, Spain
| | - M Martinez
- INSTITUTO BERNABEU, ASSISTED REPRODUCTION, Alicante, Spain
| | - J Llacer
- INSTITUTO BERNABEU, ASSISTED REPRODUCTION, Alicante, Spain
| | - A Bernabeu
- INSTITUTO BERNABEU, ASSISTED REPRODUCTION, Alicante, Spain
| | - R Bernabeu
- INSTITUTO BERNABEU, ASSISTED REPRODUCTION, Alicante, Spain
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Guerrero J, Häckel S, Croft AS, Hoppe S, Albers CE, Gantenbein B. The nucleus pulposus microenvironment in the intervertebral disc: the fountain of youth? Eur Cell Mater 2021; 41:707-738. [PMID: 34128534 DOI: 10.22203/ecm.v041a46] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The intervertebral disc (IVD) is a complex tissue, and its degeneration remains a problem for patients, without significant improvement in treatment strategies. This mostly age-related disease predominantly affects the nucleus pulposus (NP), the central region of the IVD. The NP tissue, and especially its microenvironment, exhibit changes that may be involved at the outset or affect the progression of IVD pathology. The NP tissue microenvironment is unique and can be defined by a variety of specific factors and components characteristic of its physiology and function. NP progenitor cell interactions with their surrounding microenvironment may be a key factor for the regulation of cellular metabolism, phenotype, and stemness. Recently, celltransplantation approaches have been investigated for the treatment of degenerative disc disease, highlighting the need to better understand if and how transplanted cells can give rise to healthy NP tissue. Hence, understanding all the components of the NP microenvironment seems to be critical to better gauge the success and outcomes of approaches for tissue engineering and future clinical applications. Knowledge about the components of the NP microenvironment, how NP progenitor cells interact with them, and how changes in their surroundings can alter their function is summarised. Recent discoveries in NP tissue engineering linked to the microenvironment are also reviewed, meaning how crosstalk within the microenvironment can be adjusted to promote NP regeneration. Associated clinical problems are also considered, connecting bench-to-bedside in the context of IVD degeneration.
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Affiliation(s)
- J Guerrero
- Tissue Engineering for Orthopaedics and Mechanobiology (TOM), Department for BioMedical Research (DBMR) of the Faculty of Medicine of the University of Bern, University of Bern, Bern,
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Villamizar-Sarmiento MG, Guerrero J, Moreno-Villoslada I, Oyarzun-Ampuero FA. The key role of the drug self-aggregation ability to obtain optimal nanocarriers based on aromatic-aromatic drug-polymer interactions. Eur J Pharm Biopharm 2021; 166:19-29. [PMID: 34052430 DOI: 10.1016/j.ejpb.2021.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 04/20/2021] [Accepted: 05/23/2021] [Indexed: 11/18/2022]
Abstract
The efficient association and controlled release of hydrophilic and aromatic low molecular-weight drugs (HALMD) still remains a challenge due to their relatively weak interactions with excipients and strong affinity to water. Considering that a wide variety of drugs to treat chronic diseases are HALMD, their inclusion in polymeric nanoparticles (NPs) constitutes an attractive possibility by providing to these drugs with controllable physiochemical properties, preventing crisis episodes, decreasing dose-dependent side effects and promoting therapeutic adhesiveness. However, the strong interaction of HALMD with the aqueous medium jeopardizes their encapsulation and controlled release. In this work, the role of the self-assembly tendency of HALMD on their association with the aromatic excipient poly(sodium 4-styrensulfonate) (PSS) to form NPs is studied. For this aim, the widely used drugs amitriptyline (AMT), promethazine (PMZ), and chlorpheniramine (CPM) are selected due to their well described critical aggregation concentration (cac) (36 mM for AMT, 36 mM for PMZ, and 69.5 mM for CPM). These drugs undergo aromatic-aromatic interactions with the polymer, which stabilize their mutual binding, as seen by NMR. The simple mixing of solutions of opposite charged molecules (drug + PSS) allowed obtaining NPs. Importantly, comparing the three drugs, the formation of NPs occurred at significantly lower absolute concentration and significantly lower drug/polymer ratio as the cac takes lower values, indicating a stronger binding to the polymer, as also deduced from the respective drug/polymer dissociation constant values. In addition, the number of formed NPs is similar for all formulations, even though a much lower concentration of the drug and polymer is present in systems comprising lower cac. The obtained NPs are spheroidal and present size between 100 and 160 nm, low polydispersity (≤0.3) and negative zeta potential (from -30 to -60 mV). The association efficiency reaches values ≥ 83% and drug loading could achieve values up to 68% (never evidenced before for systems comprising HALMD). In addition, drug release studies are also significantly influenced by cac, providing more prolonged release for AMT and PMZ (lower cac), whose delivery profiles adjust to the Korsmeyer-Peppas equation. As a novelty of this work, a synergic contribution of drug self-association tendency and aromatic-aromatic interaction between the drug and polymers is highlighted, a fact that could be crucial for the rational design and development of efficient drug delivery systems.
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Affiliation(s)
- María Gabriela Villamizar-Sarmiento
- Department of Sciences and Pharmaceutical Technology, University of Chile, Santiago de Chile 8380494, Chile; Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380494, Chile.
| | - Juan Guerrero
- Laboratorio de Compuestos de Coordinación y Química Supramolecular, Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Libertador Bernardo O'Higgins 3363, Estación central, 9170002 Santiago, Chile.
| | - Ignacio Moreno-Villoslada
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5110033, Chile.
| | - Felipe A Oyarzun-Ampuero
- Department of Sciences and Pharmaceutical Technology, University of Chile, Santiago de Chile 8380494, Chile; Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380494, Chile; Center of New Drugs for Hypertension (CENDHY), Universidad de Chile & Pontificia Universidad Católica de Chile, Santiago, Chile.
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Valdés P, Rovira A, Guerrero J, Morales Á, Rovira M, Martínez C. Managing the pandemic from the radiology department's point of view. Radiologia (Engl Ed) 2020; 62:503-514. [PMID: 33213870 PMCID: PMC7834116 DOI: 10.1016/j.rx.2020.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 10/24/2020] [Accepted: 10/28/2020] [Indexed: 02/06/2023]
Abstract
The COVID-19 pandemic is forcing our entire society to adopt numerous changes, at least until an effective treatment and/or vaccine becomes widely available. Because COVID-19 is a new disease that has required us to make complex decisions based on scant evidence, the pandemic is having an enormous impact on our health system. Radiology departments play a fundamental role in the management of COVID-19, both in the diagnosis of the disease and in the posterior management of patients. To ensure the safety of patients and healthcare professionals, it is essential to understand the infection so that safe circuits can be implemented. This article summarizes the pathophysiology of COVID-19 infection and explains the measures that radiology departments need to adopt during the pandemic.
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Affiliation(s)
- P Valdés
- Agencia Sanitaria Costa del Sol, Marbella, Málaga, España.
| | - A Rovira
- Hospital Vall d'Hebron, Barcelona, España
| | - J Guerrero
- Agencia Sanitaria Costa del Sol, Marbella, Málaga, España
| | - Á Morales
- Hospital Universitario Donostia, San Sebastián, Guipúzcoa, España
| | - M Rovira
- Hospital Universitari Sagrat Cor, Barcelona, España
| | - C Martínez
- Hospital Son LLàtzer. Palma de Mallorca, España
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Goecke A, Karsulovic C, Guerrero J, Tempio F, Lopez M. SAT0004 INCREASED M1 INFLAMMATORY PHENOTYPE OF CIRCULATING MONOCYTES IS ASSOCIATED WITH HISTORY OF CARDIOVASCULAR EVENTS IN RA PATIENTS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.6645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Cardiovascular (CV) Disease is the main cause of death in Rheumatoid Arthritis (RA). Current tools like Framingham or European SCORE underestimate CV risk in RA patients. Efforts to improve the assessment including RA biomarkers (disease activity) have been only partially successful. There is a need for better biomarkers to identify AR patients at high risk for CV disease. Monocytes have an important role in plaque development. Monocytes differentiates into 2 main phenotypes M1 and M2 (1). In RA and in post-MI patients M1 monocytes are expanded (2). mTORC influences monocyte phenotypein vitroand has been associated with development of atheromatous plaque (3).Objectives:To evaluate the phenotype of circulating monocyte in RA patient with or without previous CV events (RA-CV(-)RA-CV(+)), and its possible association with mTORC activity.Methods:9 RA-CV(+)patients aged between 18 and 65 yo with RA (EULAR/ACR 2010 criteria), were paired with RA-CV(-)patients. 6 healthy individuals (HI) were also studied. Pairing criteria were classic CV risk factors (AHA 2018), sex, age, years since RA diagnosis, comorbidities, number of DMARDs previously used and use of bDMARDS. M1 and M2 circulating Monocytes were evaluated in PBMC obtained from patients and controls by flow cytometry analysis. Intracellular inflammatory cytokines (IL1, Il6) and phosphorylated S6R (P-S6R) as a measure of mTORC activation was also evaluated. M1 was defined as CD14+HLA-DR+CCR2+ and M2 CD14+CD163+CCR2-. DAS28-RCP, DAS28-ESR and Lipid profile was also measured. The differences among groups was analysed using Mann–Whitney U nonparametric. The relationship between variables with Spearman rank correlation test.Results:There were no differences in demographic, RA characteristic and CV risk factors between RA-CV (+) and RA-CV (-) patients. Male/Female 4/5, age 62±3 and 63±2 respectively. HI were younger than RA patients (32.5±7). CV events were 8 patients with MI and one Stroke. DAS28-RCP was 2.96±0.23 and 2.88±0.43 respectively. One patient in each group had failed to more than 2 sDMARDs and one in each group was receiving bDMARD. M1 circulating monocytes were expanded in RA as compared to HI. This difference was at RA-CV (+) expense. RA monocytes had higher Intracellular levels of IL-1b and IL-6 as compared to HI. M1 from RA-CV (+) had higher intracellular levels of IL-1b and IL-6 than RA-CV (-). M1 monocytes have higher levels of inflammatory cytokines than M2. P-S6R protein, (mTORC activation), was higher in RA patients than HI. The highest levels of P-S6R was observed in M1 monocytes from RA-CV(+) population.FIGURE 1.Circulating monocytes phenotype, intracellular cytokines and phosphorylated S6R in HI and RA-CV (+), RA-CV (-) and the combined RA patients. A) *=0,02; B) *=0,016; C) ****=0,0001, **=0,002; D) ****=0,0001, ***=0,0008, **=0,001, *=0,01; E) ****0,0001, **=0,002; F) ****=0,0001, **=0,001, **=0,003.Conclusion:RA-CV+ patients, have a significantly higher number of pro-inflammatory circulating monocytes, using a multiparametric classification method. These monocytes also express higher levels of inflammatory cytokines and higher activation of mTORC, which also participate in the development of atheromatous plaque, suggesting that these monocytes could be a key element in the non-clarified-yet, excess of CV risk of RA patients.References:[1] Fukui S, et al. M1 and M2 Monocytes in Rheumatoid Arthritis: A Contribution of Imbalance of M1/M2 Monocytes to Osteoclastogenesis. Front Immunol. 2017;8:1958.2. Zhuang J, et al. Comparison of circulating dendritic cell and monocyte subsets at different stages of atherosclerosis: insights from optical coherence tomography. BMC Cardiovasc Disord. 2017 Oct 18;17(1):270.Disclosure of Interests:None declared
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Sierra-Sanchez A, Ordóñez-Luque A, Ruiz-Garcia A, Guerrero J, Fernández-Porcel N, Lizana-Moreno A, Fernández-González A, Ibáñez OE, Arias-Santiago S. Effect of different irradiation doses on human and murine fibroblasts used as feeder layer for keratinocytes’ culture. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Fernández-González A, Pérez-Castejón E, Quiñones-Vico M, Lizana-Moreno A, Guerrero J, Fernández-Porcel N, Ruiz-Garcia A, Ibáñez OE, Ordóñez-Luque A, Sierra-Sánchez Á, Arias-Santiago S. Epidermal barrier function evaluation in an artificial autologous skin model based on hyaluronic acid biomaterial. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Garcia E, Barraza-Burgos J, Guerrero J, Trujillo M, Lester E, Williams O. Experimental data on morphological characterization of chars from coal and bagasse blends. Data Brief 2020; 29:105358. [PMID: 32258261 PMCID: PMC7109420 DOI: 10.1016/j.dib.2020.105358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 02/16/2020] [Accepted: 02/24/2020] [Indexed: 11/23/2022] Open
Abstract
Morphological characterization of chars from coal and bagasse plays an important role in both the burning efficiency and intrinsic reactivity of chars, during a combustion process [1], [2]. In this work, abundant data on the morphology of chars produced from coal and bagasse blends are presented. Char synthesis was performed varying the temperature (900, 1000 and 1100 °C) and bagasse proportion feeding (0, 25, 50, 75 and 100% w/w) in the pyrolysis reaction. Proximate, ultimate, petrographic and vitrinite reflectance of raw coal and bagasse are presented. Char morphology is classified into three groups -- thin walls, thick walls, and solid particles--, and results are exhibited. The data set is a comprehensive source for advancing in a further understanding of char's morphology from coal-bagasse blends.
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Affiliation(s)
- Edward Garcia
- Facultad de Ingeniería, Universidad Del Valle, Ciudad Universitaria Meléndez, Calle 13 # 100-00, A. A. 25360, Cali, Colombia
| | - Juan Barraza-Burgos
- Facultad de Ingeniería, Universidad Del Valle, Ciudad Universitaria Meléndez, Calle 13 # 100-00, A. A. 25360, Cali, Colombia
- Corresponding author.
| | - Juan Guerrero
- Facultad de Ingeniería, Universidad Del Valle, Ciudad Universitaria Meléndez, Calle 13 # 100-00, A. A. 25360, Cali, Colombia
| | - María Trujillo
- Facultad de Ingeniería, Universidad Del Valle, Ciudad Universitaria Meléndez, Calle 13 # 100-00, A. A. 25360, Cali, Colombia
| | - Edward Lester
- Faculty of Engineering, University of Nottingham, University Park, NG7 2RD Nottingham, United Kingdom
| | - Orla Williams
- Faculty of Engineering, University of Nottingham, University Park, NG7 2RD Nottingham, United Kingdom
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Villamizar-Sarmiento MG, Molina-Soto EF, Guerrero J, Shibue T, Nishide H, Moreno-Villoslada I, Oyarzun-Ampuero FA. A New Methodology to Create Polymeric Nanocarriers Containing Hydrophilic Low Molecular-Weight Drugs: A Green Strategy Providing a Very High Drug Loading. Mol Pharm 2019; 16:2892-2901. [DOI: 10.1021/acs.molpharmaceut.9b00097] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- María Gabriela Villamizar-Sarmiento
- Department of Sciences and Pharmaceutical Technology, University of Chile, Santiago de Chile 8380494, Chile
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5110033, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380494, Chile
| | - Elton F. Molina-Soto
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5110033, Chile
| | - Juan Guerrero
- Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40 Santiago 9170124, Chile
| | - Toshimichi Shibue
- Materials Characterization Central Laboratory; School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Hiroyuki Nishide
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 165-8555, Japan
| | - Ignacio Moreno-Villoslada
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5110033, Chile
| | - Felipe A. Oyarzun-Ampuero
- Department of Sciences and Pharmaceutical Technology, University of Chile, Santiago de Chile 8380494, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380494, Chile
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Such-Miquel L, Brines L, Alberola AM, Zarzoso M, Chorro FJ, Guerrero J, Parra G, Gallego N, Soler C, Del Canto I, Guill A, Such L. Effect of chronic exercise on myocardial electrophysiological heterogeneity and stability. Role of intrinsic cholinergic neurons: A study in the isolated rabbit heart. PLoS One 2018; 13:e0209085. [PMID: 30562383 PMCID: PMC6298659 DOI: 10.1371/journal.pone.0209085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 11/19/2018] [Indexed: 11/19/2022] Open
Abstract
A study has been made of the effect of chronic exercise on myocardial electrophysiological heterogeneity and stability, as well as of the role of cholinergic neurons in these changes. Determinations in hearts from untrained and trained rabbits on a treadmill were performed. The hearts were isolated and perfused. A pacing electrode and a recording multielectrode were located in the left ventricle. The parameters determined during induced VF, before and after atropine (1μM), were: fibrillatory cycle length (VV), ventricular functional refractory period (FRPVF), normalized energy (NE) of the fibrillatory signal and its coefficient of variation (CV), and electrical ventricular activation complexity, as an approach to myocardial heterogeneity and stability. The VV interval was longer in the trained group than in the control group both prior to atropine (78±10 vs. 68±10 ms) and after atropine (76±8 vs. 67±10 ms). Likewise, FRPVF was longer in the trained group than in the control group both prior to and after atropine (53±8 vs. 42±7 ms and 50±6 vs. 40±6 ms, respectively), and atropine did not modify FRPVF. The CV of FRPVF was lower in the trained group than in the control group prior to atropine (12.5±1.5% vs. 15.1±3.8%) and, decreased after atropine (15.1±3.8% vs. 12.2±2.4%) in the control group. The trained group showed higher NE values before (0.40±0.04 vs. 0.36±0.05) and after atropine (0.37±0.04 vs. 0.34±0.06; p = 0.08). Training decreased the CV of NE both before (23.3±2% vs. 25.2±4%; p = 0.08) and after parasympathetic blockade (22.6±1% vs. 26.1±5%). Cholinergic blockade did not modify these parameters within the control and trained groups. Activation complexity was lower in the trained than in the control animals before atropine (34±8 vs. 41±5), and increased after atropine in the control group (41±5 vs. 48±9, respectively). Thus, training decreases the intrinsic heterogeneity of the myocardium, increases electrophysiological stability, and prevents some modifications due to muscarinic block.
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Affiliation(s)
- Luis Such-Miquel
- Department of Physiotherapy, Universitat de València, Valencia, Spain
- Health Research Institute (INCLIVA), Valencia, Spain
| | - Laia Brines
- Health Research Institute (INCLIVA), Valencia, Spain
- Department of Physiology, Universitat de València, Valencia, Spain
| | - Antonio M. Alberola
- Health Research Institute (INCLIVA), Valencia, Spain
- Department of Physiology, Universitat de València, Valencia, Spain
| | - Manuel Zarzoso
- Department of Physiotherapy, Universitat de València, Valencia, Spain
- Health Research Institute (INCLIVA), Valencia, Spain
| | - Francisco J. Chorro
- Health Research Institute (INCLIVA), Valencia, Spain
- Department of Medicine, Universitat de València, Valencia, Spain
| | - Juan Guerrero
- Department of Electronic Engineering, Universitat de València, Valencia, Spain
| | - Germán Parra
- Health Research Institute (INCLIVA), Valencia, Spain
- Department of Physiology, Universitat de València, Valencia, Spain
| | | | - Carlos Soler
- Health Research Institute (INCLIVA), Valencia, Spain
- Department of Physiology, Universitat de València, Valencia, Spain
| | | | - Antonio Guill
- ITACA, Universitat Politècnica de València, Valencia, Spain
| | - Luis Such
- Health Research Institute (INCLIVA), Valencia, Spain
- Department of Physiology, Universitat de València, Valencia, Spain
- * E-mail:
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Guerrero J, Gil I, Navlet JJ, López‐Paniagua I, Abánades A. Experimental Evaluation of Sodium−Water Reaction (SWR) as Propellant. Prop , Explos , Pyrotech 2018. [DOI: 10.1002/prep.201800209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Juan Guerrero
- Energy Engineering Department/ETSIIUniversidad Politécnica de Madrid c/José Gutiérrez Abascal, 2 28006 - Madrid Spain
- Subdirectorate general of terrestrial systems.National Institute of Aerospace Technology Carretera de Ajalvir, km.4 28850 - Madrid Spain
| | - Iván Gil
- Subdirectorate general of terrestrial systems.National Institute of Aerospace Technology Carretera de Ajalvir, km.4 28850 - Madrid Spain
| | - Juan J. Navlet
- Subdirectorate general of terrestrial systems.National Institute of Aerospace Technology Carretera de Ajalvir, km.4 28850 - Madrid Spain
| | - Ignacio López‐Paniagua
- Energy Engineering Department/ETSIIUniversidad Politécnica de Madrid c/José Gutiérrez Abascal, 2 28006 - Madrid Spain
| | - Alberto Abánades
- Energy Engineering Department/ETSIIUniversidad Politécnica de Madrid c/José Gutiérrez Abascal, 2 28006 - Madrid Spain
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Martínez NP, Isaacs M, Oliver AG, Ferraudi G, Lappin AG, Guerrero J. Effects of non-covalent interactions on the electronic and electrochemical properties of Cu(i) biquinoline complexes. Dalton Trans 2018; 47:13171-13179. [PMID: 30177987 DOI: 10.1039/c8dt02722f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A Cu(i) complex {[CuI(biq)2]ClO4-biq} with biq = 2,2'-biquinoline was prepared, fully characterized and its properties compared with those of the well-known [CuI(biq)2]ClO4 complex. The crystal structures were obtained for both complexes (crystal structure for [CuI(biq)2]ClO4 has not been previously reported). Complex [CuI(biq)2]ClO4 crystallizes as a racemate where each enantiomer has a different τ4 value while compound {[CuI(biq)2]ClO4-biq} crystallizes as a non-chiral supramolecular aggregate with an uncoordinated biq molecule forming a π-π stacking interaction with a coordinated biq. 1H-NMR spectroscopy in non-coordinating solvents reveals that structures in solution are similar to those in the solid phase, confirming the presence of a supramolecular arrangement for compound {[CuI(biq)2]ClO4-biq}. The stability of the non-covalent aggregate in solution of {[CuI(biq)2]ClO4-biq} causes significant differences between the spectroscopic and electrochemical properties of {[CuI(biq)2]ClO4-biq} and [CuI(biq)2]ClO4.
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Affiliation(s)
- Natalia P Martínez
- Facultad de Química, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
| | - Mauricio Isaacs
- Facultad de Química, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile and Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Pontificia Universidad Católica de Chile, Chile and UC-Energy Research Center, Pontificia Universidad Católica de Chile, Chile
| | - Allen G Oliver
- Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, IN 46556-5670, USA.
| | - G Ferraudi
- Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, IN 46556-5670, USA. and Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556-5670, USA
| | - A Graham Lappin
- Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, IN 46556-5670, USA.
| | - Juan Guerrero
- Facultad de Química y Biología, Universidad de Santiago de Chile, Libertador Bernardo O'Higgins 3363, Estación central, Santiago, Chile.
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Llacer J, Moliner B, Guerrero J, Ten J, Castillo J, Lledo B, Bernabeu R. Women with higher response and similar ovarian reserve produce oocytes of higher quality. Influence of ovarian sensitivity on oocyte quality. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Díaz DE, Llanos L, Arce P, Lorca R, Guerrero J, Costamagna J, Aravena D, Ferraudi G, Oliver A, Lappin AG, Lemus L. Steric and Electronic Factors Affecting the Conformation of Bimetallic CuI
Complexes: Effect of the Aliphatic Spacer of Tetracoordinating Schiff-Base Ligands. Chemistry 2018; 24:13839-13849. [DOI: 10.1002/chem.201802290] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Daniel E. Díaz
- Facultad de Química y Biología, Departamento de Química de los, Materiales; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363, Estación Central Santiago Chile
| | - Leonel Llanos
- Facultad de Química y Biología, Departamento de Química de los, Materiales; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363, Estación Central Santiago Chile
| | - Pablo Arce
- Facultad de Química y Biología, Departamento de Química de los, Materiales; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363, Estación Central Santiago Chile
| | - Romina Lorca
- Facultad de Química y Biología, Departamento de Química de los, Materiales; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363, Estación Central Santiago Chile
| | - Juan Guerrero
- Facultad de Química y Biología, Departamento de Química de los, Materiales; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363, Estación Central Santiago Chile
| | - Juan Costamagna
- Facultad de Química y Biología, Departamento de Química de los, Materiales; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363, Estación Central Santiago Chile
| | - Daniel Aravena
- Facultad de Química y Biología, Departamento de Química de los, Materiales; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363, Estación Central Santiago Chile
| | - Guillermo Ferraudi
- Department of Chemistry and Biochemistry; University of Notre Dame; 46556-5670 Notre Dame IN USA
| | - Allen Oliver
- Department of Chemistry and Biochemistry; University of Notre Dame; 46556-5670 Notre Dame IN USA
| | - A. Graham Lappin
- Department of Chemistry and Biochemistry; University of Notre Dame; 46556-5670 Notre Dame IN USA
| | - Luis Lemus
- Facultad de Química y Biología, Departamento de Química de los, Materiales; Universidad de Santiago de Chile; Av. Libertador Bernardo O'Higgins 3363, Estación Central Santiago Chile
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Tello L, Jave J, Guerrero J. Análisis de cuantificación de plomo en suelos de parques recreacionales de la ciudad de Lima - Perú. Ecol apl 2018. [DOI: 10.21704/rea.v17i1.1168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Aldabaldetrecu M, Tamayo L, Alarcon R, Walter M, Salas-Huenuleo E, Kogan MJ, Guerrero J, Paez M, Azócar MI. Stability of Antibacterial Silver Carboxylate Complexes against Staphylococcus epidermidis and Their Cytotoxic Effects. Molecules 2018; 23:E1629. [PMID: 29973523 PMCID: PMC6100285 DOI: 10.3390/molecules23071629] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 06/20/2018] [Accepted: 06/30/2018] [Indexed: 11/30/2022] Open
Abstract
The antibacterial effects against Staphylococcus epidermidis of five silver carboxylate complexes with anti-inflammatory ligands were studied in order to analyze and compare them in terms of stability (in solution and after exposure to UV light), and their antibacterial and morphological differences. Four effects of the Ag-complexes were evidenced by transmission electronic microscopy (TEM) and scanning electronic microscopy (SEM): DNA condensation, membrane disruption, shedding of cytoplasmic material and silver compound microcrystal penetration of bacteria. 5-Chlorosalicylic acid (5Cl) and sodium 4-aminosalicylate (4A) were the most effective ligands for synthesizing silver complexes with high levels of antibacterial activity. However, Ag-5Cl was the most stable against exposure UV light (365 nm). Cytotoxic effects were tested against two kinds of eukaryotic cells: murine fibroblast cells (T10 1/2) and human epithelial ovarian cancer cells (A2780). The main objective was to identify changes in their antibacterial properties associated with potential decomposition and the implications for clinical applications.
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Affiliation(s)
- Maialen Aldabaldetrecu
- Faculty of Chemistry and Biology, University of Santiago de Chile, Av. Bernardo Ó Higgins 3363, Casilla 40, Correo 33, Estación Central, 9170022 Santiago, Chile.
| | - Laura Tamayo
- Facultad de Ingeniería, Instituto de Ciencias Químicas Aplicadas, Polymers and Macromolecules Center, Universidad Autónoma de Chile, El Llano Subercaseaux 2801, San Miguel, 9170022 Santiago, Chile.
| | - Romina Alarcon
- Faculty of Chemistry and Biology, University of Santiago de Chile, Av. Bernardo Ó Higgins 3363, Casilla 40, Correo 33, Estación Central, 9170022 Santiago, Chile.
| | - Mariana Walter
- Faculty of Chemistry and Biology, University of Santiago de Chile, Av. Bernardo Ó Higgins 3363, Casilla 40, Correo 33, Estación Central, 9170022 Santiago, Chile.
| | - Edison Salas-Huenuleo
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, 9170022 Santiago, Chile.
| | - Marcelo J Kogan
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, 9170022 Santiago, Chile.
| | - Juan Guerrero
- Faculty of Chemistry and Biology, University of Santiago de Chile, Av. Bernardo Ó Higgins 3363, Casilla 40, Correo 33, Estación Central, 9170022 Santiago, Chile.
| | - Maritza Paez
- Faculty of Chemistry and Biology, University of Santiago de Chile, Av. Bernardo Ó Higgins 3363, Casilla 40, Correo 33, Estación Central, 9170022 Santiago, Chile.
| | - Manuel I Azócar
- Faculty of Chemistry and Biology, University of Santiago de Chile, Av. Bernardo Ó Higgins 3363, Casilla 40, Correo 33, Estación Central, 9170022 Santiago, Chile.
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Guerrero J, Antonio E, Manzanilla A, Torres J, Lozano R. Autonomous Underwater Vehicle Robust Path Tracking: Auto-Adjustable Gain High Order Sliding Mode Controller. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.ifacol.2018.07.272] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Arce P, Vera C, Escudero D, Guerrero J, Lappin A, Oliver A, Jara DH, Ferraudi G, Lemus L. Structural diversity in Cu(i) complexes of the PNP ligand: from pincer to binuclear coordination modes and their effects upon the electrochemical and photophysical properties. Dalton Trans 2017; 46:13432-13445. [PMID: 28948992 DOI: 10.1039/c7dt02244a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A set of new copper(i) complexes is synthesized and characterized using a labile PNP pincer ligand (PNP = N,N'-bis(diphenylphosphine)-2,6-diaminopyridine). A homoleptic Cu(i) complex [Cu(PNP-κP1:κN1)2]+, (1), was prepared, and taking advantage of the uncoordinated phosphorus atoms in (1), reaction with a second Cu(i) atom bearing secondary ligands (PPh3, phen or dmp) allows the formation of new complexes: a bimetallic helicate [Cu(PNP)2(phen)]2+, (2), a mononuclear pincer complex [CuI(PNP)(PPh3)]+, (3), and a heteroleptic complex [CuI(PNP)(dmp)]+, (4). All complexes were characterized by X-ray crystallography, NMR (VT-NMR for (1) and (4)), cyclic-voltammetry, and steady-state and time-resolved luminescence spectroscopy. The fluxional behavior in (1) was studied by 31P VT-NMR, where an Ea value of 47.42 kJ mol-1 was calculated for the intramolecular alternating coordination of -PPh2 moieties in PNP to the metal atom. This set of compounds reveals the versatility of the PNP ligand when added to the coordinating properties of Cu(i). The four complexes exhibit emission in solution and complexes (2)-(4) display intense luminescence in the solid state. The oscillographic traces showing the decay of the luminescence were fitted to biexponential functions with time constants: 8.0 μs > τem,1 > 0.37 μs and 50 μs >τem, 2 > 2.2 μs for complexes (2), (3) and (4), respectively. Radiative relaxation is associated with electronic transitions in both the ligand PNP and metal-to-ligand charge transfer (MLCT).
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Affiliation(s)
- Pablo Arce
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Libertador Bernardo O'Higgins 3363, Estación Central, Santiago, Chile.
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Ortega E, Gálvez I, Hinchado MD, Guerrero J, Martín-Cordero L, Torres-Piles S. Anti-inflammatory effect as a mechanism of effectiveness underlying the clinical benefits of pelotherapy in osteoarthritis patients: regulation of the altered inflammatory and stress feedback response. Int J Biometeorol 2017; 61:1777-1785. [PMID: 28456879 DOI: 10.1007/s00484-017-1361-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/06/2017] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
The purpose of the present investigation was to evaluate whether an anti-inflammatory effect together with an improvement of the regulation of the interaction between the inflammatory and stress responses underlies the clinical benefits of pelotherapy in osteoarthritis (OA) patients. This study evaluated the effects of a 10-day cycle of pelotherapy at the spa centre 'El Raposo' (Spain) in a group of 21 OA patients diagnosed with primary knee OA. Clinical assessments included pain intensity using a visual analog scale; pain, stiffness and physical function using the Western Ontario and McMaster Universities Arthritis Index; and health-related quality of life using the EuroQol-5D questionnaire. Serum inflammatory cytokine levels (IL-1β, TNF-α, IL-8, IL-6, IL-10 and TGF-β) were evaluated using the Bio-Plex® Luminex® system. Circulating neuroendocrine-stress biomarkers, such as cortisol and extracellular 72 kDa heat shock protein (eHsp72), were measured by ELISA. After the cycle of mud therapy, OA patients improved the knee flexion angle and OA-related pain, stiffness and physical function, and they reported a better health-related quality of life. Serum concentrations of IL-1β, TNF-α, IL-8, IL-6 and TGF-β, as well as eHsp72, were markedly decreased. Besides, systemic levels of cortisol increased significantly. These results confirm that the clinical benefits of mud therapy may well be mediated, at least in part, by its systemic anti-inflammatory effects and neuroendocrine-immune regulation in OA patients. Thus, mud therapy could be an effective alternative treatment in the management of OA.
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Affiliation(s)
- E Ortega
- Research Group in Immunophysiology, Department of Physiology, Faculty of Sciences, University of Extremadura, Avda. Elvas s/n, 06071, Badajoz, Spain
| | - I Gálvez
- Research Group in Immunophysiology, Department of Physiology, Faculty of Sciences, University of Extremadura, Avda. Elvas s/n, 06071, Badajoz, Spain.
| | - M D Hinchado
- Research Group in Immunophysiology, Department of Physiology, Faculty of Sciences, University of Extremadura, Avda. Elvas s/n, 06071, Badajoz, Spain
| | - J Guerrero
- Department of Nursing, Faculty of Medicine, University of Extremadura, Badajoz, Spain
| | - L Martín-Cordero
- Research Group in Immunophysiology, Department of Nursing, University Center of Plasencia, University of Extremadura, Plasencia, Spain
| | - S Torres-Piles
- Research Group in Immunophysiology, Department of Medical-Surgical Therapy, Faculty of Medicine, University of Extremadura, Badajoz, Spain
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Fernández-González A, Lizana-Moreno A, Guerrero J, Ruiz-Garcia A, Fernández N, Espinosa O, Ordonez-Luque A, Sierra-Sanchez A, Arias-Santiago S. Clinical, histological and homeostasis evaluation of tissue bio-engineered skin substitute: In vivo mouse model. Cytotherapy 2017. [DOI: 10.1016/j.jcyt.2017.02.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Von Seth M, Hillered L, Otterbeck A, Hanslin K, Larsson A, Sjölin J, Lipcsey M, Cove ME, Chew NS, Vu LH, Lim RZ, Puthucheary Z, Hanslin K, Wilske F, Skorup P, Tano E, Sjölin J, Lipcsey M, Derese I, Thiessen S, Derde S, Dufour T, Pauwels L, Bekhuis Y, Van den Berghe G, Vanhorebeek I, Khan M, Dwivedi D, Zhou J, Prat A, Seidah NG, Liaw PC, Fox-Robichaud AE, Von Seth M, Skorup P, Hillered L, Larsson A, Sjölin J, Lipcsey M, Otterbeck A, Hanslin K, Lipcsey M, Larsson A, Von Seth M, Correa T, Pereira J, Takala J, Jakob S, Skorup P, Maudsdotter L, Tano E, Lipcsey M, Castegren M, Larsson A, Sjölin J, Xue M, Xu JY, Liu L, Huang YZ, Guo FM, Yang Y, Qiu HB, Kuzovlev A, Moroz V, Goloubev A, Myazin A, Chumachenko A, Pisarev V, Takeyama N, Tsuda M, Kanou H, Aoki R, Kajita Y, Hashiba M, Terashima T, Tomino A, Davies R, O’Dea KP, Soni S, Ward JK, O’Callaghan DJ, Takata M, Gordon AC, Wilson J, Zhao Y, Singer M, Spencer J, Shankar-Hari M, Genga KR, Lo C, Cirstea MS, Walley KR, Russell JA, Linder A, Boyd JH, Sedlag A, Riedel C, Georgieff M, Barth E, Debain A, Jonckheer J, Moeyersons W, Van zwam K, Puis L, Staessens K, Honoré PM, Spapen HD, De Waele E, de Garibay APR, Bracht H, Ende-Schneider B, Schreiber C, Kreymann B, Bini A, Votino E, Giuliano G, Steinberg I, Vetrugno L, Trunfio D, Sidoti A, Essig A, Brogi E, Forfori F, Conroy M, Marsh B, O’Flynn J, Henne-Bruns D, Gebhard F, Orend K, Halatsch M, Weiss M, Chase M, Freinkman E, Uber A, Liu X, Cocchi MN, Donnino MW, Peetermans M, Liesenborghs L, Claes J, Vanassche T, Hoylaerts M, Jacquemin M, Vanhoorelbeke K, De Meyer S, Verhamme P, Vögeli A, Ottiger M, Meier M, Steuer C, Bernasconi L, Huber A, Christ-Crain M, Henzen C, Hoess C, Thomann R, Zimmerli W, Müller B, Schütz P, Hoppensteadt D, Walborn A, Rondina M, Tsuruta K, Fareed J, Tachyla S, Ikeda T, Ono S, Ueno T, Suda S, Nagura T, Damiani E, Domizi R, Scorcella C, Tondi S, Pierantozzi S, Ciucani S, Mininno N, Adrario E, Pelaia P, Donati A, Andersen MS, Lu S, Lopez G, Lassen AT, Ghiran I, Shapiro NI, Trahtemberg U, Sviri S, Beil M, Agur Z, Van Heerden P, Jahaj E, Vassiliou A, Mastora Z, Orfanos SE, Kotanidou A, Wirz Y, Sager R, Amin D, Amin A, Haubitz S, Hausfater P, Huber A, Kutz A, Mueller B, Schuetz P, Sager RS, Wirz YW, Amin DA, Amin AA, Hausfater PH, Huber AH, Haubitz S, Kutz A, Mueller B, Schuetz P, Gottin L, Dell’amore C, Stringari G, Cogo G, Ceolagraziadei M, Sommavilla M, Soldani F, Polati E, Meier M, Baumgartner T, Zurauskaité G, Gupta S, Mueller B, Devendra A, Schuetz P, Mandaci D, Eren G, Ozturk F, Emir N, Hergunsel O, Azaiez S, Khedher S, Maaoui A, Salem M, Chernevskaya E, Beloborodova N, Bedova A, Sarshor YU, Pautova A, Gusarov V, Öveges N, László I, Forgács M, Kiss T, Hankovszky P, Palágyi P, Bebes A, Gubán B, Földesi I, Araczki Á, Telkes M, Ondrik Z, Helyes Z, Kemény Á, Molnár Z, Spanuth E, Ebelt H, Ivandic B, Thomae R, Werdan K, El-Shafie M, Taema K, El-Hallag M, Kandeel A, Tayeh O, Taema K, Eldesouky M, Omara A, Winkler MS, Holzmann M, Nierhaus A, Mudersbach E, Schwedhelm E, Daum G, Kluge S, Zoellner C, Greiwe G, Sawari H, Schwedhelm E, Nierhaus A, Kluge S, Kubitz J, Jung R, Daum G, Reichenspurner H, Zoellner C, Winkler MS, Groznik M, Ihan A, Andersen LW, Chase M, Holmberg MJ, Wulff A, Cocchi MN, Donnino MW, Balci C, Haliloglu M, Bilgili B, Bilgin H, Kasapoglu U, Sayan I, Süzer M, Mulazımoglu L, Cinel I, Patel V, Shah S, Parulekar P, Minton C, Patel J, Ejimofo C, Choi H, Costa R, Caruso P, Nassar P, Fu J, Jin J, Xu Y, Kong J, Wu D, Yaguchi A, Klonis A, Ganguly S, Kollef M, Burnham C, Fuller B, Mavrommati A, Chatzilia D, Salla E, Papadaki E, Kamariotis S, Christodoulatos S, Stylianakis A, Alamanos G, Simoes M, Trigo E, Silva N, Martins P, Pimentel J, Baily D, Curran LA, Ahmadnia E, Patel BV, Adukauskiene D, Cyziute J, Adukauskaite A, Pentiokiniene D, Righetti F, Colombaroli E, Castellano G, Wilske F, Skorup P, Lipcsey M, Hanslin K, Larsson A, Sjölin J, Man M, Shum HP, Chan YH, Chan KC, Yan WW, Lee RA, Lau SK, Dilokpattanamongkol P, Thirapakpoomanunt P, Anakkamaetee R, Montakantikul P, Tangsujaritvijit V, Sinha S, Pati J, Sahu S, Adukauskiene D, Valanciene D, Dambrauskiene A, Adukauskiene D, Valanciene D, Dambrauskiene A, Hernandez K, Lopez T, Saca D, Bello M, Mahmood W, Hamed K, Al Badi N, AlThawadi S, Al Hosaini S, Salahuddin N, Cilloniz CC, Ceccato AC, Bassi GLL, Ferrer MF, Gabarrus AG, Ranzani OR, Jose ASS, Vidal CGG, de la Bella Casa JPP, Blasi FB, Torres AT, Adukauskiene D, Ciginskiene A, Dambrauskiene A, Simoliuniene R, Giuliano G, Triunfio D, Sozio E, Taddei E, Brogi E, Sbrana F, Ripoli A, Bertolino G, Tascini C, Forfori F, Fleischmann C, Goldfarb D, Schlattmann P, Schlapbach L, Kissoon N, Baykara N, Akalin H, Arslantas MK, Gavrilovic SG, Vukoja MV, Hache MH, Kashyap RK, Dong YD, Gajic OG, Ranzani O, Shankar-Hari M, Harrison D, Rabello L, Rowan K, Salluh J, Soares M, Markota AM, Fluher JF, Kogler DK, Borovšak ZB, Sinkovic AS, László I, Öveges N, Forgács M, Kiss T, Hankovszky P, Palágyi P, Bebes A, Gubán B, Földesi I, Araczki Á, Telkes M, Ondrik Z, Helyes Z, Kemény Á, Molnár Z, Fareed J, Siddiqui Z, Aggarwal P, Iqbal O, Hoppensteadt D, Lewis M, Wasmund R, Abro S, Raghuvir S, Tsuruta K, Barie PS, Fineberg D, Radford A, Tsuruta K, Casazza A, Vilardo A, Bellazzi E, Boschi R, Ciprandi D, Gigliuto C, Preda R, Vanzino R, Vetere M, Carnevale L, Kyriazopoulou E, Pistiki A, Routsi C, Tsangaris I, Giamarellos-Bourboulis E, Kyriazopoulou E, Tsangaris I, Routsi C, Pnevmatikos I, Vlachogiannis G, Antoniadou E, Mandragos K, Armaganidis A, Giamarellos-Bourboulis E, Allan P, Oehmen R, Luo J, Ellis C, Latham P, Newman J, Pritchett C, Pandya D, Cripps A, Harris S, Jadav M, Langford R, Ko B, Park H, Beumer CM, Koch R, Beuningen DV, Oudelashof AM, Vd Veerdonk FL, Kolwijck E, VanderHoeven JG, Bergmans DC, Hoedemaekers C, Brandt JB, Golej J, Burda G, Mostafa G, Schneider A, Vargha R, Hermon M, Levin P, Broyer C, Assous M, Wiener-Well Y, Dahan M, Benenson S, Ben-Chetrit E, Faux A, Sherazi R, Sethi A, Saha S, Kiselevskiy M, Gromova E, Loginov S, Tchikileva I, Dolzhikova Y, Krotenko N, Vlasenko R, Anisimova N, Spadaro S, Fogagnolo A, Remelli F, Alvisi V, Romanello A, Marangoni E, Volta C, Degrassi A, Mearelli F, Casarsa C, Fiotti N, Biolo G, Cariqueo M, Luengo C, Galvez R, Romero C, Cornejo R, Llanos O, Estuardo N, Alarcon P, Magazi B, Khan S, Pasipanodya J, Eriksson M, Strandberg G, Lipsey M, Larsson A, Rajput Z, Hiscock F, Karadag T, Uwagwu J, Jain S, Molokhia A, Barrasa H, Soraluce A, Uson E, Rodriguez A, Isla A, Martin A, Fernández B, Fonseca F, Sánchez-Izquierdo JA, Maynar FJ, Kaffarnik M, Alraish R, Frey O, Roehr A, Stockmann M, Wicha S, Shortridge D, Castanheira M, Sader HS, Streit JM, Flamm RK, Falsetta K, Lam T, Reidt S, Jancik J, Kinoshita T, Yoshimura J, Yamakawa K, Fujimi S, Armaganidis A, Torres A, Zakynthinos S, Mandragos C, Giamarellos-Bourboulis E, Ramirez P, De la Torre-Prados M, Rodriguez A, Dale G, Wach A, Beni L, Hooftman L, Zwingelstein C, François B, Colin G, Dequin PF, Laterre PF, Perez A, Welte R, Lorenz I, Eller P, Joannidis M, Bellmann R, Lim S, Chana S, Patel S, Higuera J, Cabestrero D, Rey L, Narváez G, Blandino A, Aroca M, Saéz S, De Pablo R, Thiessen S, Vanhorebeek I, Derde S, Derese I, Dufour T, Albert CN, Langouche L, Goossens C, Peersman N, Vermeersch P, Vander Perre S, Holst J, Wouters P, Van den Berghe G, Liu X, Uber AU, Holmberg M, Konanki V, McNaughton M, Zhang J, Donnino MW, Demirkiran O, Byelyalov A, Luengo C, Guerrero J, Cariqueo M, Scorcella C, Domizi R, Damiani E, Tondi S, Pierantozzi S, Rossini N, Falanga U, Monaldi V, Adrario E, Pelaia P, Donati A, Cole O, Scawn N, Balciunas M, Blascovics I, Vuylsteke A, Salaunkey K, Omar A, Salama A, Allam M, Alkhulaifi A, Verstraete S, Vanhorebeek I, Van Puffelen E, Derese I, Ingels C, Verbruggen S, Wouters P, Joosten K, Hanot J, Guerra G, Vlasselaers D, Lin J, Van den Berghe G, Haines R, Zolfaghari P, Hewson R, Offiah C, Prowle J, Park H, Ko B, Buter H, Veenstra JA, Koopmans M, Boerma EC, Veenstra JA, Buter H, Koopmans M, Boerma EC, Taha A, Shafie A, Hallaj S, Gharaibeh D, Hon H, Bizrane M, El Khattate AA, Madani N, Abouqal R, Belayachi J, Kongpolprom N, Sanguanwong N, Sanaie S, Mahmoodpoor A, Hamishehkar H, Biderman P, Van Heerden P, Avitzur Y, Solomon S, Iakobishvili Z, Carmi U, Gorfil D, Singer P, Paisley C, Patrick-Heselton J, Mogk M, Humphreys J, Welters I, Pierantozzi S, Scorcella C, Domizi R, Damiani E, Tondi S, Casarotta E, Bolognini S, Adrario E, Pelaia P, Donati A, Holmberg MJ, Moskowitz A, Patel P, Grossestreuer A, Uber A, Andersen LW, Donnino MW, Malinverni S, Goedeme D, Mols P, Langlois PL, Szwec C, D’Aragon F, Heyland DK, Manzanares W, Manzanares W, Szwec C, Langlois P, Aramendi I, Heyland D, Stankovic N, Nadler J, Uber A, Holmberg M, Sanchez L, Wolfe R, Chase M, Donnino M, Cocchi M, Atalan HK, Gucyetmez B, Kavlak ME, Aslan S, Kargi A, Yazici S, Donmez R, Polat KY, Piechota M, Piechota A, Misztal M, Bernas S, Pietraszek-Grzywaczewska I, Saleh M, Hamdy A, Hamdy A, Elhallag M, Atar F, Kundakci A, Gedik E, Sahinturk H, Zeyneloglu P, Pirat A, Popescu M, Tomescu D, Van Gassel R, Baggerman M, Schaap F, Bol M, Nicolaes G, Beurskens D, Damink SO, Van de Poll M, Horibe M, Sasaki M, Sanui M, Iwasaki E, Sawano H, Goto T, Ikeura T, Hamada T, Oda T, Mayumi T, Kanai T, Kjøsen G, Horneland R, Rydenfelt K, Aandahl E, Tønnessen T, Haugaa H, Lockett P, Evans L, Somerset L, Ker-Reid F, Laver S, Courtney E, Dalton S, Georgiou A, Robinson K, Lam T, Haas B, Reidt S, Bartlett K, Jancik J, Bigwood M, Hanley R, Morgan P, Marouli D, Chatzimichali A, Kolyvaki S, Panteli A, Diamantaki E, Pediaditis E, Sirogianni P, Ginos P, Kondili E, Georgopoulos D, Askitopoulou H, Zampieri FG, Liborio AB, Besen BA, Cavalcanti AB, Dominedò C, Dell’Anna AM, Monayer A, Grieco DL, Barelli R, Cutuli SL, Maddalena AI, Picconi E, Sonnino C, Sandroni C, Antonelli M, Gucyetmez B, Atalan HK, Tuzuner F, Cakar N, Jacob M, Sahu S, Singh YP, Mehta Y, Yang KY, Kuo S, Rai V, Cheng T, Ertmer C, Czempik P, Hutchings S, Watts S, Wilson C, Burton C, Kirkman E, Drennan D, O’Prey A, MacKay A, Forrest R, Oglinda A, Ciobanu G, Casian M, Oglinda C, Lun CT, Yuen HJ, Ng G, Leung A, So SO, Chan HS, Lai KY, Sanguanwit P, Charoensuk W, Phakdeekitcharoen B, Batres-Baires G, Kammerzell I, Lahmer T, Mayr U, Schmid R, Huber W, Spanuth E, Bomberg H, Klingele M, Thomae R, Groesdonk H, Bernas S, Piechota M, Mirkiewicz K, Pérez AG, Silva J, Ramos A, Acharta F, Perezlindo M, Lovesio L, Antonelli PG, Dogliotti A, Lovesio C, Baron J, Schiefer J, Baron DM, Faybik P, Shum HP, Yan WW, Chan TM, Marouli D, Chatzimichali A, Kolyvaki S, Panteli A, Diamantaki E, Pediaditis E, Sirogianni P, Ginos P, Kondili E, Georgopoulos D, Askitopoulou H, Vicka V, Gineityte D, Ringaitiene D, Sipylaite J, Pekarskiene J, Beurskens DM, Van Smaalen TC, Hoogland P, Winkens B, Christiaans MH, Reutelingsperger CP, Van Heurn E, Nicolaes GA, Schmitt FS, Salgado ES, Friebe JF, Fleming TF, Zemva JZ, Schmoch TS, Uhle FU, Kihm LK, Morath CM, Nusshag CN, Zeier MZ, Bruckner TB, Mehrabi AM, Nawroth PN, Weigand MW, Hofer SH, Brenner TB, Fotopoulou G, Poularas I, Kokkoris S, Brountzos E, Zakynthinos S, Routsi C, Saleh M, Elghonemi M, Nilsson KF, Sandin J, Gustafsson L, Frithiof R, Skorniakov I, Varaksin A, Vikulova D, Shaikh O, Whiteley C, Ostermann M, Di Lascio G, Anicetti L, Bonizzoli M, Fulceri G, Migliaccio ML, Sentina P, Cozzolino M, Peris A, Khadzhynov D, Halleck F, Staeck O, Lehner L, Budde K, Slowinski T, Slowinski T, Kindgen-Milles D, Khadzhynov D, Huysmans N, Laenen MV, Helmschrodt A, Boer W. 37th International Symposium on Intensive Care and Emergency Medicine (part 3 of 3). Crit Care 2017. [PMCID: PMC5374592 DOI: 10.1186/s13054-017-1629-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Poordad F, Lawitz E, Gutierrez JA, Guerrero J, Speeg K, Swenson ES. An HCV-positive recipient of an HCV-positive donor liver successfully treated before and immediately after liver transplant with daclatasvir, sofosbuvir, and ribavirin. Clin Case Rep 2017; 5:371-375. [PMID: 28396749 PMCID: PMC5378822 DOI: 10.1002/ccr3.841] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 10/31/2016] [Indexed: 01/14/2023] Open
Abstract
This case suggests that initiation of HCV therapy immediately after liver transplantation with well‐tolerated, all‐oral regimens may achieve a virologic cure in HCV‐positive recipients, thus preventing post‐transplant HCV recurrence and associated disease progression. This strategy may broaden utilization of HCV‐positive donor livers, potentially including HCV‐negative transplant recipients.
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Affiliation(s)
- Fred Poordad
- Texas Liver Institute San Antonio Texas USA; Department of Transplant Hepatology University of Texas Health Science San Antonio Texas USA
| | - Eric Lawitz
- Texas Liver Institute San Antonio Texas USA; Department of Transplant Hepatology University of Texas Health Science San Antonio Texas USA
| | - Julio A Gutierrez
- Texas Liver Institute San Antonio Texas USA; Department of Transplant Hepatology University of Texas Health Science San Antonio Texas USA
| | - Juan Guerrero
- Department of Transplant Hepatology University of Texas Health Science San Antonio Texas USA
| | - Kermit Speeg
- Department of Transplant Hepatology University of Texas Health Science San Antonio Texas USA
| | - Eugene S Swenson
- Bristol-Myers Squibb Research and Development Wallingford Connecticut USA
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Martínez-Bellver S, Cervera-Ferri A, Luque-García A, Martínez-Ricós J, Valverde-Navarro A, Bataller M, Guerrero J, Teruel-Marti V. Causal relationships between neurons of the nucleus incertus and the hippocampal theta activity in the rat. J Physiol 2017; 595:1775-1792. [PMID: 27880004 DOI: 10.1113/jp272841] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 11/12/2016] [Indexed: 11/08/2022] Open
Abstract
KEY POINTS The nucleus incertus is a key node of the brainstem circuitry involved in hippocampal theta rhythmicity. Synchronisation exists between the nucleus incertus and hippocampal activities during theta periods. By the Granger causality analysis, we demonstrated a directional information flow between theta rhythmical neurons in the nucleus incertus and the hippocampus in theta-on states. The electrical stimulation of the nucleus incertus is also able to evoke a phase reset of the hippocampal theta wave. Our data suggest that the nucleus incertus is a key node of theta generation and the modulation network. ABSTRACT In recent years, a body of evidence has shown that the nucleus incertus (NI), in the dorsal tegmental pons, is a key node of the brainstem circuitry involved in hippocampal theta rhythmicity. Ascending reticular brainstem system activation evokes hippocampal theta rhythm with coupled neuronal activity in the NI. In a recent paper, we showed three populations of neurons in the NI with differential firing during hippocampal theta activation. The objective of this work was to better evaluate the causal relationship between the activity of NI neurons and the hippocampus during theta activation in order to further understand the role of the NI in the theta network. A Granger causality analysis was run to determine whether hippocampal theta activity with sensory-evoked theta depends on the neuronal activity of the NI, or vice versa. The analysis showed causal interdependence between the NI and the hippocampus during theta activity, whose directional flow depended on the different neuronal assemblies of the NI. Whereas type I and II NI neurons mainly acted as receptors of hippocampal information, type III neuronal activity was the predominant source of flow between the NI and the hippocampus in theta states. We further determined that the electrical activation of the NI was able to reset hippocampal waves with enhanced theta-band power, depending on the septal area. Collectively, these data suggest that hippocampal theta oscillations after sensory activation show dependence on NI neuron activity, which could play a key role in establishing optimal conditions for memory encoding.
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Affiliation(s)
- Sergio Martínez-Bellver
- Neuronal Circuits Laboratory, Department of Anatomy and Human Embryology, University of Valencia, Valencia, Spain
| | - Ana Cervera-Ferri
- Neuronal Circuits Laboratory, Department of Anatomy and Human Embryology, University of Valencia, Valencia, Spain
| | - Aina Luque-García
- Neuronal Circuits Laboratory, Department of Anatomy and Human Embryology, University of Valencia, Valencia, Spain
| | - Joana Martínez-Ricós
- Neuronal Circuits Laboratory, Department of Anatomy and Human Embryology, University of Valencia, Valencia, Spain
| | - Alfonso Valverde-Navarro
- Neuronal Circuits Laboratory, Department of Anatomy and Human Embryology, University of Valencia, Valencia, Spain
| | - Manuel Bataller
- Digital Signal Processing Group, Department of Electronics and Engineering, University of Valencia, Burjassot (Valencia), Spain
| | - Juan Guerrero
- Digital Signal Processing Group, Department of Electronics and Engineering, University of Valencia, Burjassot (Valencia), Spain
| | - Vicent Teruel-Marti
- Neuronal Circuits Laboratory, Department of Anatomy and Human Embryology, University of Valencia, Valencia, Spain
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Martínez-Gómez F, Guerrero J, Matsuhiro B, Pavez J. In vitro release of metformin hydrochloride from sodium alginate/polyvinyl alcohol hydrogels. Carbohydr Polym 2017; 155:182-191. [DOI: 10.1016/j.carbpol.2016.08.079] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/05/2016] [Accepted: 08/25/2016] [Indexed: 11/30/2022]
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Farand J, Mai N, Chandrasekhar J, Newby ZE, Van Veldhuizen J, Loyer-Drew J, Venkataramani C, Guerrero J, Kwok A, Li N, Zherebina Y, Wilbert S, Zablocki J, Phillips G, Watkins WJ, Mourey R, Notte GT. Selectivity switch between FAK and Pyk2: Macrocyclization of FAK inhibitors improves Pyk2 potency. Bioorg Med Chem Lett 2016; 26:5926-5930. [PMID: 27876318 DOI: 10.1016/j.bmcl.2016.10.092] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 10/30/2016] [Accepted: 10/31/2016] [Indexed: 01/24/2023]
Abstract
Herein, we describe the synthesis of Pyk2 inhibitors via macrocyclization of FAK and dual Pyk2-FAK inhibitors. We identified macrocycle 25a as a highly potent Pyk2 inhibitor (IC50=0.7nM), with ∼175-fold improvement in Pyk2 potency as compared to its acyclic counterpart. In many cases, macrocyclization improved Pyk2 potency while weakening FAK potency, thereby improving the Pyk2/FAK selectivity ratio for this structural class of inhibitors. Various macrocyclic linkers were studied in an attempt to optimize Pyk2 selectivity. We observed macrocyclic atropisomerism during the synthesis of 19-membered macrocycles 10a-d, and successfully obtained crystallographic evidence of one atropisomer (10a-AtropB) preferentially bound to Pyk2.
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Affiliation(s)
- Julie Farand
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA.
| | - Nicholas Mai
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Jayaraman Chandrasekhar
- Department of Structural Chemistry, Gilead Sciences, Inc., 199 East Blaine Street, Seattle, WA 98102, USA
| | - Zachary E Newby
- Department of Structural Chemistry, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Josh Van Veldhuizen
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 199 East Blaine Street, Seattle, WA 98102, USA
| | - Jennifer Loyer-Drew
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 199 East Blaine Street, Seattle, WA 98102, USA
| | - Chandrasekar Venkataramani
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Juan Guerrero
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Amy Kwok
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Ning Li
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Yelena Zherebina
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Sibylle Wilbert
- Department of Drug Metabolism, Gilead Sciences, Inc., 199 East Blaine Street, Seattle, WA 98102, USA
| | - Jeff Zablocki
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Gary Phillips
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 199 East Blaine Street, Seattle, WA 98102, USA
| | - William J Watkins
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
| | - Robert Mourey
- Department of Biology, Gilead Sciences, Inc., 199 East Blaine Street, Seattle, WA 98102, USA
| | - Gregory T Notte
- Department of Medicinal Chemistry, Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, USA
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Zablocki JA, Elzein E, Li X, Koltun DO, Parkhill EQ, Kobayashi T, Martinez R, Corkey B, Jiang H, Perry T, Kalla R, Notte GT, Saunders O, Graupe M, Lu Y, Venkataramani C, Guerrero J, Perry J, Osier M, Strickley R, Liu G, Wang WQ, Hu L, Li XJ, El-Bizri N, Hirakawa R, Kahlig K, Xie C, Li CH, Dhalla AK, Rajamani S, Mollova N, Soohoo D, Lepist EI, Murray B, Rhodes G, Belardinelli L, Desai MC. Discovery of Dihydrobenzoxazepinone (GS-6615) Late Sodium Current Inhibitor (Late I Nai), a Phase II Agent with Demonstrated Preclinical Anti-Ischemic and Antiarrhythmic Properties. J Med Chem 2016; 59:9005-9017. [PMID: 27690427 DOI: 10.1021/acs.jmedchem.6b00939] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Late sodium current (late INa) is enhanced during ischemia by reactive oxygen species (ROS) modifying the Nav 1.5 channel, resulting in incomplete inactivation. Compound 4 (GS-6615, eleclazine) a novel, potent, and selective inhibitor of late INa, is currently in clinical development for treatment of long QT-3 syndrome (LQT-3), hypertrophic cardiomyopathy (HCM), and ventricular tachycardia-ventricular fibrillation (VT-VF). We will describe structure-activity relationship (SAR) leading to the discovery of 4 that is vastly improved from the first generation late INa inhibitor 1 (ranolazine). Compound 4 was 42 times more potent than 1 in reducing ischemic burden in vivo (S-T segment elevation, 15 min left anteriorior descending, LAD, occlusion in rabbits) with EC50 values of 190 and 8000 nM, respectively. Compound 4 represents a new class of potent late INa inhibitors that will be useful in delineating the role of inhibitors of this current in the treatment of patients.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Gongxin Liu
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Wei-Qun Wang
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Lufei Hu
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Xiao-Jun Li
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Nesrine El-Bizri
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Ryoko Hirakawa
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Kris Kahlig
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Cheng Xie
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Cindy Hong Li
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Arvinder K Dhalla
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | - Sridharan Rajamani
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
| | | | | | | | | | | | - Luiz Belardinelli
- Biology, Gilead Sciences Inc. , 7601 Dumbarton Circle, Fremont, California 94555, United States
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Azócar MI, Aldabaldetrecu M, levin P, Tamayo L, Guerrero J, Páez MA. Correlating light and thermal stability of silver carboxylate complexes by infrared and 13C NMR spectroscopy. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1234610] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Manuel I. Azócar
- Facultad de química y biología, Universidad de Santiago, Santiago, Chile
| | | | - Pedro levin
- Facultad de química y biología, Universidad de Santiago, Santiago, Chile
| | - Laura Tamayo
- Facultad de química y biología, Universidad de Santiago, Santiago, Chile
| | - Juan Guerrero
- Facultad de química y biología, Universidad de Santiago, Santiago, Chile
| | - Maritza A. Páez
- Facultad de química y biología, Universidad de Santiago, Santiago, Chile
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LLACER J, Guerrero J, Lledo B, Ortiz J, Ten J, Bernabeu R. Miscarriage and aneuploidy rates are higher in very young donors. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
One-dimensional (1D) models are widely employed to simplify the analysis of axisymmetric capillary jets. These models postulate that, for slender deformations of the free surface, the radial profile of the axial velocity can be approximated as uniform (viscous slice, averaged, and Cosserat models) or parabolic (parabolic model). In classical works on spatial stability analysis with 1D models, considerable misinterpretation was generated about the modes yielded by each model. The already existing physical analysis of three-dimensional (3D) axisymmetric spatial modes enables us to relate these 1D spatial modes to the exact 3D counterparts. To do so, we address the surface stimulation problem, which can be treated as linear, by considering the effect of normal and tangential stresses to perturb the jet. A Green's function for a spatially local stimulation having a harmonic time dependence provides the general formalism to describe any time-periodic stimulation. The Green's function of this signaling problem is known to be a superposition of the spatial modes, but in fact these modes are of fundamental nature, i.e., not restricted to the surface stimulation problem. The smallness of the wave number associated with each mode is the criterion to validate or invalidate the 1D approaches. The proposed axial-velocity profiles (planar or parabolic) also have a remarkable influence on the outcomes of each 1D model. We also compare with the classical 3D results for (i) conditions for absolute instability, and (ii) the amplitude of the unstable mode resulting from both normal and tangential surface stress stimulation. Incidentally, as a previous task, we need to re-deduce 1D models in order to include eventual stresses of various possible origins (electrohydrodynamic, thermocapillary, etc.) applied on the free surface, which were not considered in the previous general formulations.
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Affiliation(s)
- J Guerrero
- Department of Chemistry and Physics, Georgia Regents University, 1120 15th Street, SCI W3005, Augusta, Georgia 30912, USA
| | - H González
- Departamento de Física Aplicada III, Escuela Técnica Superior de Ingeniería, Camino de los Descubrimientos, s/n, 41092-Sevilla, Spain
| | - F J García
- Departamento de Física Aplicada I, Escuela Politécnica Superior, Universidad de Sevilla, c/Virgen de África, 7, 41011-Sevilla, Spain
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Abstract
We implement a finite-dimensional representation of the 2+1D Lorentz group with a PT-symmetric waveguide array. Our device can be engineered to behave like a multi-port oscillator or directional coupler with amplification. We show that the two-waveguide coupler with linear losses, the Vernier effect in coupled asymmetric micro-cavity lasers, and the so-called linear PT-symmetric dimer belong to this symmetry class of optical systems.
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Espinoza S, Arce P, San-Martín E, Lemus L, Costamagna J, Farías L, Rossi M, Caruso F, Guerrero J. The crystal structure of mono- and di-nuclear copper(I) complexes with substituted triphenylphosphine ligands. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.08.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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McCall JW, Kramer L, Genchi C, Guerrero J, Dzimianski MT, Mansour A, McCall SD, Carson B. Effects of doxycycline on heartworm embryogenesis, transmission, circulating microfilaria, and adult worms in microfilaremic dogs. Vet Parasitol 2014; 206:5-13. [PMID: 25458121 DOI: 10.1016/j.vetpar.2014.09.023] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 09/13/2014] [Accepted: 09/29/2014] [Indexed: 11/17/2022]
Abstract
Tetracycline treatment of animals or humans infected with filariae that harbor Wolbachia endosymbionts blocks further embryogenesis, and existing microfilariae gradually die. This treatment also kills developing larvae and has a slow-kill effect on adult filariae, all presumably due to elimination of the Wolbachia. Also, Dirofilaria immitis microfilariae in blood collected from dogs up to 25 days after the last dose of doxycycline developed to infective L3 that were normal in appearance and motility in mosquitoes but did not continue to develop or migrate normally after subcutaneous (SC) injection into dogs. The present study was designed to determine whether heartworm microfilariae collected at later times after treatment would regain the ability to continue normal development in a dog. The study also was expected to yield valuable data on the effects of treatment on microfilariae and antigen levels and adult worms. The study was conducted in 16 dogs as two separate replicates at different times. A total of five dogs (two in Replicate A and three in Replicate B) infected either by SC injection of L3 or intravenous transplantation of adult heartworms were given doxycycline orally at 10mg/kg twice daily for 30 days, with three untreated controls. Microfilarial counts in the five treated dogs gradually declined during the 12-13 months after treatment initiation. Two dogs were amicrofilaremic before necropsy and three had 13 or fewer microfilariae/ml. Only one treated dog was negative for heartworm antigen before necropsy. Overall, treated dogs generally had fewer live adult heartworms than controls, and most of their live worms were moribund. All three control dogs remained positive for microfilariae and antigen and had many live worms. L3 from mosquitoes fed on blood collected 73-77 or 161-164 days after initiation of doxycycline treatments were injected SC into five dogs. None of the dogs injected with L3 from mosquitoes fed on blood from doxycycline-treated dogs were ever positive for microfilariae or antigen, and none had worms at necropsy; three control dogs were positive for microfilariae and antigen and had many live worms. These data indicate that doxycycline treatment of microfilaremic dogs gradually reduces numbers of microfilariae and blocks further transmission of heartworms. This latter effect should be highly effective in reducing the rate of selection of heartworms with genes that confer resistance to macrocyclic lactone preventives and microfilaricides. The data also suggest that doxycycline has a slow-kill effect on adult heartworms.
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Affiliation(s)
- J W McCall
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.
| | - L Kramer
- Dipartimento de Produzione Animali, Università di Parma, 43100 Parma, Italy
| | - C Genchi
- Dipartimento di Patologia Animale, Igiene e Sanità Pubblica Veterinaria, Sezione di Patologia Generale e Parasitologia, Università degli Studi de Milano, Italy
| | - J Guerrero
- Department of Pathobiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - M T Dzimianski
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
| | - A Mansour
- TRS Labs, Inc., 215 Paradise Blvd., Athens, GA 30607, USA
| | - S D McCall
- TRS Labs, Inc., 215 Paradise Blvd., Athens, GA 30607, USA
| | - B Carson
- TRS Labs, Inc., 215 Paradise Blvd., Athens, GA 30607, USA
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Cipriani M, Toloza J, Bradford L, Putzu E, Vieites M, Curbelo E, Tomaz AI, Garat B, Guerrero J, Gancheff JS, Maya JD, Olea Azar C, Gambino D, Otero L. Effect of the Metal Ion on the antiT. cruziActivity and Mechanism of Action of 5-Nitrofuryl-Containing Thiosemicarbazone Metal Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402614] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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