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Perez V, Zaobornyj T, Vico T, Vanasco V, Marchini T, Godoy E, Alvarez S, Evelson P, Donato M, Gelpi RJ, D'Annunzio V. Middle-age abolishes cardioprotection conferred by thioredoxin-1 in mice. Arch Biochem Biophys 2024; 753:109880. [PMID: 38171410 DOI: 10.1016/j.abb.2023.109880] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/29/2023] [Accepted: 12/30/2023] [Indexed: 01/05/2024]
Abstract
Thioredoxin-1 (Trx1) has cardioprotective effects on ischemia/reperfusion (I/R) injury, although its role in ischemic postconditioning (PostC) in middle-aged mice is not understood. This study aimed to evaluate if combining two cardioprotective strategies, such as Trx1 overexpression and PostC, could exert a synergistic effect in reducing infarct size in middle-aged mice. Young or middle-aged wild-type mice (Wt), transgenic mice overexpressing Trx1, and dominant negative (DN-Trx1) mutant of Trx1 mice were used. Mice hearts were subjected to I/R or PostC protocol. Infarct size, hydrogen peroxide (H2O2) production, protein nitration, Trx1 activity, mitochondrial function, and Trx1, pAkt and pGSK3β expression were measured. PostC could not reduce infarct size even in the presence of Trx1 overexpression in middle-aged mice. This finding was accompanied by a lack of Akt and GSK3β phosphorylation, and Trx1 expression (in Wt group). Trx1 activity was diminished and H2O2 production and protein nitration were increased in middle-age. The respiratory control rate dropped after I/R in Wt-Young and PostC restored this value, but not in middle-aged groups. Our results showed that Trx1 plays a key role in the PostC protection mechanism in young but not middle-aged mice, even in the presence of Trx1 overexpression.
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Affiliation(s)
- V Perez
- Universidad de Buenos Aires, Facultad de Ciencias Médicas, Departamento de Patología - Institute of Cardiovascular Physiopathology, Argentina
| | - T Zaobornyj
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Institute of Biochemistry and Molecular Medicine (IBIMOL UBA-CONICET), Argentina
| | - T Vico
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Institute of Biochemistry and Molecular Medicine (IBIMOL UBA-CONICET), Argentina
| | - V Vanasco
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Institute of Biochemistry and Molecular Medicine (IBIMOL UBA-CONICET), Argentina
| | - T Marchini
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Institute of Biochemistry and Molecular Medicine (IBIMOL UBA-CONICET), Argentina
| | - E Godoy
- Universidad de Buenos Aires, Facultad de Ciencias Médicas, Departamento de Patología - Institute of Cardiovascular Physiopathology, Argentina
| | - S Alvarez
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Institute of Biochemistry and Molecular Medicine (IBIMOL UBA-CONICET), Argentina
| | - P Evelson
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Institute of Biochemistry and Molecular Medicine (IBIMOL UBA-CONICET), Argentina
| | - M Donato
- Universidad de Buenos Aires, Facultad de Ciencias Médicas, Departamento de Patología - Institute of Cardiovascular Physiopathology, Argentina
| | - R J Gelpi
- Universidad de Buenos Aires, Facultad de Ciencias Médicas, Departamento de Patología - Institute of Cardiovascular Physiopathology, Argentina
| | - V D'Annunzio
- Universidad de Buenos Aires, Facultad de Ciencias Médicas, Departamento de Patología - Institute of Cardiovascular Physiopathology, Argentina.
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Zakeri M, Alvarez S, Sansgiry S. Knowledge and Behavior Regarding Cognitive Brain Health in a US sample. Res Social Adm Pharm 2023. [DOI: 10.1016/j.sapharm.2022.08.011] [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: 01/23/2023]
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3
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Mansfield A, Reddy Mallareddy J, Yang L, Lin WH, Feathers R, Ayers-Ringler J, Tolosa E, Kizhake S, Kubica S, Boghean L, Alvarez S, Naldrett M, Singh S, Rana S, Zahid M, Smadbeck J, Johnson S, Harris F, Sotiriou S, Karagouga G, McCune A, Schaefer-Klein J, Quiñones-Hinojosa A, Roden A, Kosari F, Cheville J, Vasmatzis G, Anastasiadis P, Borad M, Natarajan A. P2.14-03 Restored Ubiquitination and Degradation of Exon 14 Skipped MET with Proteolysis Targeting Chimeras. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.259] [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: 10/14/2022]
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Gomez-Pinedo U, Matías-Guiu JA, Torre-Fuentes L, Montero-Escribano P, Hernández-Lorenzo L, Pytel V, Maietta P, Alvarez S, Sanclemente-Alamán I, Moreno-Jimenez L, Ojeda-Hernandez D, Villar-Gómez N, Benito-Martin MS, Selma-Calvo B, Vidorreta-Ballesteros L, Madrid R, Matías-Guiu J. Variant rs4149584 (R92Q) of the TNFRSF1A gene in patients with familial multiple sclerosis. Neurologia 2022:S2173-5808(22)00087-6. [PMID: 35963536 DOI: 10.1016/j.nrleng.2022.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 06/28/2022] [Accepted: 07/15/2022] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Genomic studies have identified numerous genetic variants associated with susceptibility to multiple sclerosis (MS); however, each one explains only a small percentage of the risk of developing the disease. These variants are located in genes involved in specific pathways, which supports the hypothesis that the risk of developing MS may be linked to alterations in these pathways, rather than in specific genes. We analyzed the role of the TNFRSF1A gene, which encodes one of the TNF-α receptors involved in a signaling pathway previously linked to autoimmune disease. METHODS We included 138 individuals from 23 families including at least 2 members with MS, and analyzed the presence of exonic variants of TNFRSF1A through whole-exome sequencing. We also conducted a functional study to analyze the pathogenic mechanism of variant rs4149584 (-g.6442643C > G, NM_001065.4:c.362 G > A, R92Q) by plasmid transfection into human oligodendroglioma (HOG) cells, which behave like oligodendrocyte lineage cells; protein labeling was used to locate the protein within cells. We also analyzed the ability of transfected HOG cells to proliferate and differentiate into oligodendrocytes. RESULTS Variant rs4149584 was found in 2 patients with MS (3.85%), one patient with another autoimmune disease (7.6%), and in 5 unaffected individuals (7.46%). The 2 patients with MS and variant rs4149584 were homozygous carriers and belonged to the same family, whereas the remaining individuals presented the variant in heterozygosis. The study of HOG cells transfected with the mutation showed that the protein does not reach the cell membrane, but rather accumulates in the cytoplasm, particularly in the endoplasmic reticulum and near the nucleus; this suggests that, in the cells presenting the mutation, TNFRSF1 does not act as a transmembrane protein, which may alter its signaling pathway. The study of cell proliferation and differentiation found that transfected cells continue to be able to differentiate into oligodendrocytes and are probably still capable of producing myelin, although they present a lower rate of proliferation than wild-type cells. CONCLUSIONS Variant rs4149584 is associated with risk of developing MS. We analyzed its functional role in oligodendrocyte lineage cells and found an association with MS in homozygous carriers. However, the associated molecular alterations do not influence the differentiation into oligodendrocytes; we were therefore unable to confirm whether this variant alone is pathogenic in MS, at least in heterozygosis.
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Affiliation(s)
- U Gomez-Pinedo
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain.
| | - J A Matías-Guiu
- Department of Neurology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - L Torre-Fuentes
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - P Montero-Escribano
- Department of Neurology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - L Hernández-Lorenzo
- Department of Neurology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - V Pytel
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain; Department of Neurology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | | | | | - I Sanclemente-Alamán
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - L Moreno-Jimenez
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - D Ojeda-Hernandez
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - N Villar-Gómez
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - M S Benito-Martin
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - B Selma-Calvo
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - L Vidorreta-Ballesteros
- Department of Neurology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | | | - J Matías-Guiu
- Laboratory of Neurobiology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain; Department of Neurology, Institute of Neurosciences, IdISSC, Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
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Balaji P, Toan Tran V, Barry AM, Yang E, Lu J, Bandodkar S, Alvarez S, Ronquillo J, Varikatt W, McEwan A, Thiagalingam A, Thomas P, Qian C. Differential Biophysics of Heating, Efficacy and Durability of Renal Denervation for Microwave and Radiofrequency Ablation. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.046] [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: 10/16/2022]
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Balaji P, Toan TV, Barry A, Yang E, Lu J, Bandodkar S, Alvarez S, Ronquillo J, Varikatt W, McEwan A, Thiagalingam A, P. Thomas S, C. Qian P. Long-Term Safety and Efficacy of Transcatheter Microwave Renal Denervation in an Ovine Model. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.603] [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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Cepeda–Duque JC, Gómez–Valencia B, Alvarez S, Gutiérrez–Sanabria DR, Lizcano DJ. Daily activity pattern of pumas (Puma concolor) and their potential prey in a tropical cloud forest of Colombia. Anim Biodiv Conserv 2021. [DOI: 10.32800/abc.2021.44.0267] [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] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Ecosystems in the northern Andes face unprecedented habitat loss. Pumas are the top predators in the region and exert key ecological functions, such as population control and resource facilitation. However, little is known about the temporal niche of the species or its effects on behaviour of prey in the tropics. We hypothesized that there is a link between the activity patterns of pumas and their prey in a cloud forest of the Central Andes of Colombia. We installed 61 camera traps to estimate the degree of overlap between the daily activity curves of pumas and seven potential prey species, using conditional kernel density functions. Pumas, armadillos, mountain pacas, and white–eared opossums were mainly nocturnal, with little crepuscular activity and high temporal overlap. Central American agouti, mountain coati, little red brocket deer, and Cauca guan displayed a predominantly diurnal activity and temporal partitioning with pumas. As opportunistic predators, pumas were able to maximize foraging efficiency by preying on the crepuscular and nocturnal species. Conservation of this highland predator will largely depend on the suitable management of its native prey.
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Affiliation(s)
| | - B. Gómez–Valencia
- Instituto de Investigaciones Alexander von Humboldt, Bogotá, Colombia
| | - S. Alvarez
- Wildlife Conservation Society, Cali, Colombia
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Ethèves MA, Choisis N, Alvarez S, Dalleau F, Hascoat J, Gallard V, Cardinale E. Risk factors for Salmonella enterica subsp . enterica persistence in broiler-chicken flocks on Reunion Island. Heliyon 2021; 7:e06278. [PMID: 33748450 PMCID: PMC7969330 DOI: 10.1016/j.heliyon.2021.e06278] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 09/19/2019] [Revised: 03/09/2020] [Accepted: 02/09/2021] [Indexed: 11/24/2022] Open
Abstract
This study was conducted to identify the main risk factors for Salmonella spp. persistence in broiler flocks in Reunion Island. Seventy broiler farms were surveyed from March 2016 to June 2018. Samples of fresh droppings were collected using gauze socks, and a questionnaire was completed with the farmers. Persistence was defined as an infection with the same serovar before and after cleaning and disinfection (C/D) of poultry houses. Salmonella spp. was found to persist on 27% of the farms. Cleaning concrete surrounding areas (OR = 0.23) and disinfecting silos (OR = 0.17) reduced the risk of pathogen persistence. An analysis of infections of pests found in the vicinity of the farms confirmed their role in the persistence of Salmonella spp. Fifteen percent of the pests were infected and the presence of mealworms in poultry litter (OR = 6.69) was found to increase the risk of Salmonella spp. persistence. We conclude that improved cleaning-disinfection, sanitary preventive measures and pest control in the poultry sector are needed to avoid the persistence of Salmonella spp. on broiler farms.
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Affiliation(s)
- M A Ethèves
- UMR Animal, Santé, Territoires, Risques et Écosystèmes, CIRAD - BIOS, Cyroi Platform 2 rue Maxime Rivière, 97490 Ste Clotilde, La Réunion, France.,ASTRE, Univ Montpellier, CIRAD, INRAe, Montpellier, France
| | - N Choisis
- Groupement de défense sanitaire de La Réunion, 1 rue du Père Hauck, PK23, Bâtiment E/F/G, 97418 La Plaine des Cafres, La Réunion, France
| | - S Alvarez
- UMR Animal, Santé, Territoires, Risques et Écosystèmes, CIRAD - BIOS, Cyroi Platform 2 rue Maxime Rivière, 97490 Ste Clotilde, La Réunion, France.,ASTRE, Univ Montpellier, CIRAD, INRAe, Montpellier, France
| | - F Dalleau
- Groupement de défense sanitaire de La Réunion, 1 rue du Père Hauck, PK23, Bâtiment E/F/G, 97418 La Plaine des Cafres, La Réunion, France
| | - J Hascoat
- Groupement de défense sanitaire de La Réunion, 1 rue du Père Hauck, PK23, Bâtiment E/F/G, 97418 La Plaine des Cafres, La Réunion, France
| | - V Gallard
- Coopérative des Aviculteurs de La Réunion, AVIPOLE, 14 rue de l'Etang, 97450 Saint-Louis, La Réunion, France
| | - E Cardinale
- UMR Animal, Santé, Territoires, Risques et Écosystèmes, CIRAD - BIOS, Cyroi Platform 2 rue Maxime Rivière, 97490 Ste Clotilde, La Réunion, France.,ASTRE, Univ Montpellier, CIRAD, INRAe, Montpellier, France
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Alvarez S, Martinez-Fernandez A, Mendez P. Ensiling potential of fresh tomato waste with dehydrated beet pulp and cereal straw as additives. ANIM NUTR FEED TECHN 2020. [DOI: 10.5958/0974-181x.2020.00034.7] [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: 10/22/2022]
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Qian PC, Barry MA, Lu J, Pouliopoulos J, Mina A, Bandodkar S, Alvarez S, James V, Ronquillo J, Varikatt W, Thiagalingam A, Thomas S. 1196Transvascular pace-capture of aorticorenal ganglia provides a testable procedural endpoint for transcatheter renal artery denervation and identifies a novel therapeutic ablation target for denervation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0026] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Transcatheter renal denervation procedures often produces incomplete renal denervation and inconsistent antihypertensive effect. The lack of an intraprocedural method for renal sympathetic nerve function assessment has precluded a rational and physiologically based approach to ensure adequate denervation has been achieved at the time of the procedure.
Purpose
To demonstrate that it is possible to localise aorticorenal ganglia via transvascular pacing to provide: 1) a testable procedural endpoint for transcatheter renal denervation and, 2) a novel ablation target for renal denervation.
Methods
High frequency pacing in the inferior vena cava and aorta, invasive blood pressure measurements and renal angiography was performed in sheep (N=19) to identify ARG pace-capture sites by concurrent hypertensive and renal vasoconstrictive responses. Group A (N=5) underwent ink injection labelling at the ARG pace-capture site for histological verification; Group B (N=6) received unilateral irrigated radiofrequency ablation of ARG pace-capture sites and assessment of renal innervation at 1week post-procedure; and Group C (N=8) had ARG pacing performed prior to and 2–3 weeks after unilateral transcatheter microwave renal denervation.
Results
ARG pace-capture responses were observed at paired discrete sites in the posterior IVC and anterolateral aorta approximately 40mm above the ipsilateral renal artery. Pacing elicited a mean arterial blood pressure change of 22.2 [IQR 15.5–34.3] mmHg, p<0.001, together with ipsilateral renal vasoconstriction with main renal artery calibre change of −0.42mm [IQR −0.64mm to −0.24mm] measured with quantitative coronary analysis (QCA), p<0.0001, and branch renal artery median pixel density index change −10.4% [IQR −22.7% to −3.0%], p=0.003. Contralateral renal arterial vasoconstriction was not observed consistently at either the main or branch renal artery level. Sympathetic ganglionic tissue was observed at ARG pace-capture sites, and ganglion ablation caused significant ipsilateral renal denervation with a median hilar functional sympathetic nerve area reduction of 51% [IQR 24%–52%], p=0.043, and renal cortical norepinephrine reduction of 54% [IQR 36%–59%], p=0.043. Circumferential renal denervation resulted in immediate and sustained abolition of ARP pacing induced renal vasoconstriction and significant ipsilateral renal denervation.
Conclusion
Localisation of ARG using transvascular pacing is feasible with pace-capture demonstrated by concurrent hypertensive and ipsilateral renal arterial vasoconstrictive responses. Abolition of ARG pacing induced renal arterial vasoconstriction may indicate successful renal sympathetic denervation, providing a physiological procedural endpoint to guide transcatheter renal denervation. Additionally, ablation of ARG could provide an alternative or adjunctive method for renal denervation.
Acknowledgement/Funding
University of Sydney; Western Sydney Local health District; National Health and Medical Research Council of Australia; National Heart Foundation (Au)
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Affiliation(s)
- P C Qian
- Westmead Hospital, Cardiology, Sydney, Australia
| | - M A Barry
- Westmead Hospital, Cardiology, Sydney, Australia
| | - J Lu
- Westmead Hospital, Cardiology, Sydney, Australia
| | | | - A Mina
- Westmead Hospital, Institute of Clinical Pathology and Medical Research, Sydney, Australia
| | - S Bandodkar
- The Children's Hospital at Westmead, Biochemistry, Sydney, Australia
| | - S Alvarez
- The Children's Hospital at Westmead, Biochemistry, Sydney, Australia
| | - V James
- Westmead Institute for Medical Research, Histology, Sydney, Australia
| | - J Ronquillo
- Westmead Hospital, Institute of Clinical Pathology and Medical Research, Sydney, Australia
| | - W Varikatt
- Westmead Hospital, Institute of Clinical Pathology and Medical Research, Sydney, Australia
| | | | - S Thomas
- Westmead Hospital, Cardiology, Sydney, Australia
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Qian P, Barry MA, Lu J, Mina A, Ryan J, Bandodkar S, Alvarez S, James V, Ronquillo J, Varikatt W, Kovoor P, Pouliopoulos J, McEwan A, Thiagalingam A, Thomas S. 1197The development and validation of a novel transcatheter microwave renal denervation system. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0027] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Clinical studies of transcatheter radiofrequency renal denervation for treating hypertension have been hampered by the lack of consistent denervation efficacy. Microwave energy is well suited to renal denervation due to its capacity to spare vascular structures due to cooling from adjacent blood flow while enabling deep perivascular heating.
Purpose
We aimed to: 1) develop a transcatheter microwave system capable of safely delivering deep and circumferential perivascular renal nerve ablation, and 2) demonstrate the feasibility, short-term efficacy and safety of transcatheter microwave renal denervation.
Method
A novel 7F transcatheter microwave denervation system was designed, built, and iteratively prototyped in vitro and in 15 sheep. A histological grading system for microwave induced renal arterial and renal nerve injury was devised. The microwave denervation system was validated in an additional 9 sheep, which underwent unilateral renal denervation. Up to 2 microwave ablations were delivered to each artery with maximum power at 100–110W for 480s. Sheep were euthanised at 2–3 weeks post procedure. Gross microscopic histological examination as well as renal tissue norepinephrine content was analysed.
Results
Catheter deployment and ablation was successful in all 19 targeted vessel segments and ablation produced substantial circumferential perivascular injury; median ablation lesion area >395 (IQR 251–437) mm2, depth 17.1 (IQR 15.8–18.4) mm, length 16 (IQR 12–20) mm, without collateral visceral injury. Limiting power to 100W minimised arterial injury, while maintaining a deep circumferential perivascular ablation. At microwave ablation sites, a total of 292 nerve fascicles were identified, median distance from the renal artery of 4.2mm (IQR 2.1–8.8mm), of which 249 (85%) had sustained thermal injury with 128/249 (51%) showing grade 3–4 (moderate to severe) injury. Microwave denervation reduced median functional sympathetic nerve surface area at the renal hilum on anti-tyrosine hydroxylase staining by 100% (IQR 87%-100%), p=0.0039, and median renal cortical norepinephrine content by 83% (IQR 76%–92%), p=0.0078, compared to the paired control kidney.
Conclusion
Transcatheter microwave ablation can produce deep circumferential perivascular ablations over a long segment of the renal artery without significant arterial or collateral visceral injury to provide effective renal denervation. Clinical translation may enable more consistent and complete transcatheter renal denervation and antihypertensive efficacy.
Acknowledgement/Funding
University of Sydney; Western Sydney Local health District; National Health and Medical Research Council of Australia; National Heart Foundation (Au)
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Affiliation(s)
- P Qian
- Westmead Hospital, Sydney, Australia
| | - M A Barry
- Westmead Hospital, Cardiology, Sydney, Australia
| | - J Lu
- Westmead Hospital, Cardiology, Sydney, Australia
| | - A Mina
- Westmead Hospital, Institute of Clinical Pathology and Medical Research, Sydney, Australia
| | - J Ryan
- Westmead Hospital, Institute of Clinical Pathology and Medical Research, Sydney, Australia
| | - S Bandodkar
- The Children's Hospital at Westmead, Biochemistry, Sydney, Australia
| | - S Alvarez
- The Children's Hospital at Westmead, Biochemistry, Sydney, Australia
| | - V James
- Westmead Institute for Medical Research, Histology, Sydney, Australia
| | - J Ronquillo
- Westmead Hospital, Institute of Clinical Pathology and Medical Research, Sydney, Australia
| | - W Varikatt
- Westmead Hospital, Institute of Clinical Pathology and Medical Research, Sydney, Australia
| | - P Kovoor
- Westmead Hospital, Cardiology, Sydney, Australia
| | | | - A McEwan
- Westmead Hospital, Sydney, Australia
| | | | - S Thomas
- Westmead Hospital, Sydney, Australia
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Comer JD, Alvarez S, Butler SJ, Kaltschmidt JA. Commissural axon guidance in the developing spinal cord: from Cajal to the present day. Neural Dev 2019; 14:9. [PMID: 31514748 PMCID: PMC6739980 DOI: 10.1186/s13064-019-0133-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 08/23/2019] [Indexed: 12/11/2022] Open
Abstract
During neuronal development, the formation of neural circuits requires developing axons to traverse a diverse cellular and molecular environment to establish synaptic contacts with the appropriate postsynaptic partners. Essential to this process is the ability of developing axons to navigate guidance molecules presented by specialized populations of cells. These cells partition the distance traveled by growing axons into shorter intervals by serving as intermediate targets, orchestrating the arrival and departure of axons by providing attractive and repulsive guidance cues. The floor plate in the central nervous system (CNS) is a critical intermediate target during neuronal development, required for the extension of commissural axons across the ventral midline. In this review, we begin by giving a historical overview of the ventral commissure and the evolutionary purpose of decussation. We then review the axon guidance studies that have revealed a diverse assortment of midline guidance cues, as well as genetic and molecular regulatory mechanisms required for coordinating the commissural axon response to these cues. Finally, we examine the contribution of dysfunctional axon guidance to neurological diseases.
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Affiliation(s)
- J D Comer
- Neuroscience Program, Weill Cornell Graduate School of Medical Sciences, New York, NY, USA.,Developmental Biology Program, Sloan Kettering Institute, New York, NY, USA.,Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD Program, New York, NY, USA
| | - S Alvarez
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA.,Molecular Biology Interdepartmental Graduate Program, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - S J Butler
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - J A Kaltschmidt
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, 94305, USA.
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Lin L, Tham E, Islam S, Alvarez S, Mah K, Colen T, Kutty S, Joseph N, Li L, Khoo N. HYPOPLASTIC LEFT HEART SYNDROME SPECK TRACKING ECHOCARDIOGRAPHY ATRIAL CONDUIT STRAIN AND STRAIN RATE IS RELATED TO VENTRICULAR DIASTOLIC CHANGES: A LONGITUDINAL STUDY. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.327] [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: 11/28/2022] Open
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14
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Bizimungu R, Alvarez S, Rodriguez R. 290 Thoracic Spine Fracture in the Pan Scan Era. Ann Emerg Med 2018. [DOI: 10.1016/j.annemergmed.2018.08.295] [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: 10/28/2022]
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Lin L, Tham E, Islam S, Alvarez S, Mah K, Colen T, Kutty S, Joseph N, Li L, Khoo N. INCREASED PRELOAD AND AFTERLOAD STRESSORS DURING THE FIRST INTERSTAGE MAY UNMASK IMPAIRED RIGHT VENTRICULAR CONTRACTILE RESERVE IN HYPOPLASTIC LEFT HEART SYNDROME (HLHS): A LONGITUDINAL SPECKLE TRACKING ECHOCARDIOGRAPHY STUDY. Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.326] [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] Open
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Reid G, Kort R, Alvarez S, Bourdet-Sicard R, Benoit V, Cunningham M, Saulnier D, van Hylckama Vlieg J, Verstraelen H, Sybesma W. Expanding the reach of probiotics through social enterprises. Benef Microbes 2018; 9:707-715. [DOI: 10.3920/bm2018.0015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The rapid rise in microbiome and probiotic science has led to estimates of product creation and sales exceeding $50 billion within five years. However, many people do not have access to affordable products, and regulatory agencies have stifled progress. The objective of a discussion group at the 2017 meeting of the International Scientific Association for Probiotics and Prebiotics was to identify mechanisms to confer the benefits of probiotics to a larger portion of the world’s population. Three initiatives, built around fermented food, were discussed with different methods of targeting populations that face enormous challenges of malnutrition, infectious disease, poverty and violent conflict. As new candidate probiotic strains emerge, and the market diversifies towards more personalised interventions, manufacturing processes will need to evolve. Information dissemination through scientific channels and social media is projected to provide consumers and healthcare providers with rapid access to clinical results, and to identify the nearest location of sites making new and affordable probiotic food and supplements. This rapid translation of science to individual well-being will not only expand the beneficiaries of probiotics, but also fuel new social enterprises and economic business models.
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Affiliation(s)
- G. Reid
- Canadian Research and Development Centre for Probiotics, Microbiology & Immunology, and Surgery, University of Western Ontario, Room F3-106, P.O. Box 5777, STN B, London, N6A 4V2 Ontario, Canada
| | - R. Kort
- Yoba for Life foundation, Hunzestraat 133-A, 1079 WB Amsterdam, the Netherlands
- TNO Microbiology and Systems Biology, P.O. Box 360, 3700 AJ Zeist, the Netherlands
- VU University Amsterdam; Micropia, Natura Artis Magistra, Plantage Kerklaan 38-40, 1018 CZ Amsterdam, the Netherlands
| | - S. Alvarez
- Reference Centre for Lactobacilli (CERELA-CONICET), Chacabuco 145, Tucuman 4000, Argentina
| | - R. Bourdet-Sicard
- Danone Access, Africa & India, Danone Nutricia Research, Avenue de la Vauve, 91767 Palaiseau, France
| | - V. Benoit
- General Mills, Nutrition and Technology Solutions, 9000 Plymouth Avenue N, Minneapolis, MN 55427, USA
| | - M. Cunningham
- Research and Development, Metagenics (Aust) Pty Ltd., P.O. Box 675, Virginia BC, Queensland 4014, Australia
| | - D.M. Saulnier
- Novozymes A/S, Hillerødgade 42, 2200 Frederiksberg, Denmark
| | | | - H. Verstraelen
- Vulvovaginal Disease Clinic, Dept. of Obstetrics & Gynaecology, Ghent University Hospital 0P4, Corneel Heymanslaan 10, 9000 Gent, Belgium
| | - W. Sybesma
- Yoba for Life foundation, Hunzestraat 133-A, 1079 WB Amsterdam, the Netherlands
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Clement A, Cornet D, Alvarez S, Brami C, Clement P, Menezo Y. Endometriosis pathogenesis : role played by the oxidative stress due to MTHFR mutations. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1102] [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: 11/16/2022]
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18
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Perdigón G, Alvarez S, Medina M, Vintini E, Roux E. Influence of the Oral Administration of Lactic Acid Bacteria on Iga Producing Cells Associated to Bronchus. Int J Immunopathol Pharmacol 2018. [DOI: 10.1177/205873929901200207] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- G. Perdigón
- Centro de Referencia para Lactobacilos (CERELA). Chacabuco 145. 4000. Tucumcín. Argentina
- C-tedra de Inmunologia. Instituto de Microbiologia. Facultad de Bioquimica, Quimica y Farmacia de la Universidad Nacional de Tucumcín
| | - S. Alvarez
- Centro de Referencia para Lactobacilos (CERELA). Chacabuco 145. 4000. Tucumcín. Argentina
- C-tedra de Inmunologia. Instituto de Microbiologia. Facultad de Bioquimica, Quimica y Farmacia de la Universidad Nacional de Tucumcín
| | - M. Medina
- Centro de Referencia para Lactobacilos (CERELA). Chacabuco 145. 4000. Tucumcín. Argentina
| | - E. Vintini
- C-tedra de Inmunologia. Instituto de Microbiologia. Facultad de Bioquimica, Quimica y Farmacia de la Universidad Nacional de Tucumcín
| | - E. Roux
- Laboratorio de Inmunologia Celular. Facultad de Farmacia y Bioquimica, Universidad Nacional de Buenos Aires
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Cobos M, Aquilia L, Garay E, Ochiuzzi S, Alvarez S, Flores D, Raimondi C. Epidemiologic Study and Genotyping of BK Virus in Renal Transplant Recipients. Transplant Proc 2018; 50:458-460. [DOI: 10.1016/j.transproceed.2017.12.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 12/05/2017] [Indexed: 10/17/2022]
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Qian P, Barry M, Lu J, Al-Raisi S, Mina A, Ryan J, Bandodkar S, Alvarez S, James V, Ronquillo J, Varikatt W, Clayton Z, Chong J, Kovoor P, Pouliopoulos J, McEwan A, Thiagalingam A, Thomas S. Development and Validation of a Novel Microwave Transcatheter Renal Denervation System and an Intraprocedural Physiological End Point for Renal Sympathetic Denervation. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.006] [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: 10/28/2022]
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Alvarez S, Chan J, William J, Felten C, Hanks D, Northrup A, Jaiswal D, Jansson M, Phillips T, Segal A, Satnick I, McDonald H, Little H, Pierce C, Wynne B, Carnahan J, Reddy S, Inzunza H, Oroudjev E. PD-L1 Detection and Assay Performance in Squamous Cell Carcinoma of the Head and Neck Using PD-L1 IHC 28-8 pharmDx. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx374.016] [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: 11/12/2022] Open
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Koentges C, Cimolai M, Pfeil K, Alvarez S, Hoffmann M, Bode C, Bugger H. P1567Mitochondrial calpains mediate SIRT3-dependent cardiac dysfunction in LPS-induced endotoxemia. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1567] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Rio-Machin A, Gómez-López G, Muñoz J, Garcia-Martinez F, Maiques-Diaz A, Alvarez S, Salgado RN, Shrestha M, Torres-Ruiz R, Haferlach C, Larráyoz MJ, Calasanz MJ, Fitzgibbon J, Cigudosa JC. The molecular pathogenesis of the NUP98-HOXA9 fusion protein in acute myeloid leukemia. Leukemia 2017. [PMID: 28630438 PMCID: PMC5596207 DOI: 10.1038/leu.2017.194] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- A Rio-Machin
- Molecular Cytogenetics Group, Human Cancer Genetics Programme, Centro Nacional Investigaciones Oncologicas (CNIO), Madrid, Spain.,Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - G Gómez-López
- Bioinformatics Unit, Centro Nacional Investigaciones Oncologicas (CNIO), Madrid, Spain
| | - J Muñoz
- Proteomics Unit, Centro Nacional Investigaciones Oncologicas (CNIO), ProteoRed-ISCIII, Madrid, Spain
| | - F Garcia-Martinez
- Proteomics Unit, Centro Nacional Investigaciones Oncologicas (CNIO), ProteoRed-ISCIII, Madrid, Spain
| | - A Maiques-Diaz
- Molecular Cytogenetics Group, Human Cancer Genetics Programme, Centro Nacional Investigaciones Oncologicas (CNIO), Madrid, Spain
| | - S Alvarez
- Molecular Cytogenetics Group, Human Cancer Genetics Programme, Centro Nacional Investigaciones Oncologicas (CNIO), Madrid, Spain
| | - R N Salgado
- Molecular Cytogenetics Group, Human Cancer Genetics Programme, Centro Nacional Investigaciones Oncologicas (CNIO), Madrid, Spain
| | - M Shrestha
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - R Torres-Ruiz
- Viral Vector Facility, Fundacion Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - C Haferlach
- MLL, Münchner Leukämielabor, München, Germany
| | - M J Larráyoz
- Servicio de Citogenética, Departamento de Genética, Universidad de Navarra, Pamplona, Spain
| | - M J Calasanz
- Servicio de Citogenética, Departamento de Genética, Universidad de Navarra, Pamplona, Spain
| | - J Fitzgibbon
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - J C Cigudosa
- Molecular Cytogenetics Group, Human Cancer Genetics Programme, Centro Nacional Investigaciones Oncologicas (CNIO), Madrid, Spain
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Barbieri N, Herrera M, Salva S, Villena J, Alvarez S. Lactobacillus rhamnosus CRL1505 nasal administration improves recovery of T-cell mediated immunity against pneumococcal infection in malnourished mice. Benef Microbes 2017; 8:393-405. [DOI: 10.3920/bm2016.0152] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Immunobiotic lactic acid bacteria have become an interesting alternative for the prevention of respiratory infections. Previously, we demonstrated that the nasal administration of Lactobacillus rhamnosus CRL1505, during repletion of malnourished mice, resulted in diminished susceptibility to the challenge with the respiratory pathogen Streptococcus pneumoniae. Considering the known alterations induced by malnutrition on T lymphocytes and the importance of this cell population on the protection against respiratory pathogens, we aimed to study the effect of L. rhamnosus CRL1505 nasal administration on the recovery of T cell-mediated defences against pneumococcal infection in malnourished mice under nutritional recovery. Malnourished mice received a balanced conventional diet (BCD) for seven days or BCD for seven days with nasal L. rhamnosus CRL1505 supplementation during last two days of the treatment. After the treatments mice were infected with S. pneumoniae. Flow cytometry studies were carried out in bone marrow, thymus, spleen and lung to study T cells, and Th1/Th2 cytokine profiles were determined in broncho-alveolar lavages and serum. The administration of CRL1505 strain to malnourished mice under recovery reduced quantitative and qualitative alterations of CD4+ T cells in the bone marrow, thymus, spleen and lung induced by malnutrition. In addition, CRL1505 treatment augmented Th2-cytokines (interleukin 10 and 4) in respiratory and systemic compartments after pneumococcal infection. These results show that modulation of CD4+ T lymphocytes induced by L. rhamnosus CRL1505 has an important role in the beneficial effect induced by this strain on the recovery of malnourished mice. These data also indicate that nasally administered L. rhamnosus CRL1505 may represent a non-invasive alternative to modulate and improve the T cell-mediated immunity against respiratory pathogens in immunocompromised malnourished hosts.
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Affiliation(s)
- N. Barbieri
- Laboratorio de Inmunobiotecnología, Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, Tucumán (CP 4000), Argentina
- Departamento de Ciencias Básicas y Tecnológicas, Universidad Nacional de Chilecito, 9 de Julio 22, Chilecito (F5360CKB), La Rioja, Argentina
| | - M. Herrera
- Laboratorio de Inmunobiotecnología, Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, Tucumán (CP 4000), Argentina
| | - S. Salva
- Laboratorio de Inmunobiotecnología, Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, Tucumán (CP 4000), Argentina
| | - J. Villena
- Laboratorio de Inmunobiotecnología, Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, Tucumán (CP 4000), Argentina
| | - S. Alvarez
- Laboratorio de Inmunobiotecnología, Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, Tucumán (CP 4000), Argentina
- Instituto de Bioquímica Aplicada, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Balcarce 747, Tucumán (CP 4000), Argentina
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Amii R, Laveman E, Alvarez S, Garcia A, Chang K, Chiem A. 364 Sonographic Criteria for Cholecystitis Alone Do Not Predict the Need for Emergent Cholecystectomy: A 3-Month Longitudinal Study. Ann Emerg Med 2016. [DOI: 10.1016/j.annemergmed.2016.08.381] [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: 10/20/2022]
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Gómez V, Orosa A, Rivera M, Diez-Nicolás V, Hevia V, Alvarez S, Carracedo D, Ramos E, Burgos FJ. Resistance index determination in the pre and post kidney transplantation time points in graft dysfunction diagnosis. Transplant Proc 2015; 47:34-7. [PMID: 25645764 DOI: 10.1016/j.transproceed.2014.11.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Donor shortage necessitates the development of tools capable of objectively assessing kidney graft quality from expanded criteria donors and kidneys donated after cardiac death. The deteriorating donor profile is leading to a shift from cold storage toward machine perfusion preservation. Several authors found that renal resistance (RR) at the end of machine perfusion was an independent risk factor for the development of delayed graft function (DGF). In contrast, Doppler ultrasonography in the posttransplant period reveals renal hemodynamics and is useful in diagnosing renal allograft dysfunction. We sought to determine concordance between RR and the resistance index (RI) and their diagnostic value in the assessment of graft viability. METHODS RR was determined at the end of perfusion during hypothermic machine preservation and RI was measured by Doppler ultrasonography in the early posttransplant period. Agreement between these 2 measures was established by means of the intraclass correlation coefficient (ICC). Diagnostic validity for RR and RI was determined by sensitivity, specificity and positive and negative predictive values. RESULTS The ICC was 0.135, which indicates a slight agreement. RR and RI had limited value in the prediction of DGF for a specific kidney as reflected by a c-statistic of 0.58 and 0.66, respectively. CONCLUSIONS There is no agreement between the RR and RI, which may be owing to the different conditions under which measurements are made. The poor predictive power of RR for DGF indicates that kidneys should not be discarded based on RR criteria alone.
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Affiliation(s)
- V Gómez
- Department of Urology, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain.
| | - A Orosa
- Department of Urology, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain
| | - M Rivera
- Department of Nephrology, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain
| | - V Diez-Nicolás
- Department of Urology, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain
| | - V Hevia
- Department of Urology, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain
| | - S Alvarez
- Department of Urology, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain
| | - D Carracedo
- Department of Urology, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain
| | - E Ramos
- Cellular Response to Ischemia Group, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain
| | - F J Burgos
- Department of Urology, Ramón y Cajal University Hospital, Alcalá University, Madrid, Spain
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Burgos Revilla FJ, Hevia V, Diez V, Carracedo D, Gomis A, Orosa A, Alvarez S, Gomez V. Machine perfusion: initial results in an expanded criteria donor kidney transplant program. Transplant Proc 2015; 47:19-22. [PMID: 25645760 DOI: 10.1016/j.transproceed.2014.11.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Delayed graft function (DGF) negatively impacts graft survival. Expanded criteria donors (ECD) show a higher rate of DGF. Hypothermic machine perfusion (HMP) has shown a DGF decrease and an increase of survival at 1 year. Several authors found that renal resistance (RR) at the end of machine perfusion was an independent risk factor for the development of DGF and poorer graft survival. The objective of this study was to analyze HMP results in the context of an ECD program and assess the impact of donor parameters and resistance index (RI) during perfusion in graft survival after kidney transplantation. METHODS Donor age, terminal creatinine, machine perfusion time, percentage of glomerulosclerosis, and RI at the end of the perfusion were considered as risk predictors. Univariate and multivariate Cox regression analysis was constructed to find independent risk factors of DGF. Finally, diagnostic validity for RR was determined by sensitivity, specificity, and positive and negative predictive values. RESULTS Twenty-three percent of patients developed DGF. We found no difference in the ability of flow or RI to predict the development of DGF. The predictive accuracy of RI for DGF by receiver operator characteristic curve was poor, with a c-statistic of 0.66 (95% CI, 0.50-0.81; P = .046). Our analysis did not identify risk factors that predicted graft survival at 1 year. Patient and graft survival were 98.8% and 89.7%, respectively. CONCLUSIONS HMP has reduced the rate of DGF in our cohort of recipients of ECD grafts compared with historical data (23.3% vs 38.0%). Analysis did not identify risk pretransplant factors for graft survival at 1 year.
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Affiliation(s)
- F J Burgos Revilla
- Department of Urology, Ramón y Cajal University Hospital, Madrid, Spain.
| | - V Hevia
- Department of Urology, Ramón y Cajal University Hospital, Madrid, Spain
| | - V Diez
- Department of Urology, Ramón y Cajal University Hospital, Madrid, Spain
| | - D Carracedo
- Department of Urology, Ramón y Cajal University Hospital, Madrid, Spain
| | - A Gomis
- Department of Neprhology, Ramón y Cajal University Hospital, Madrid, Spain
| | - A Orosa
- Department of Urology, Ramón y Cajal University Hospital, Madrid, Spain
| | - S Alvarez
- Department of Urology, Ramón y Cajal University Hospital, Madrid, Spain
| | - V Gomez
- Department of Urology, Ramón y Cajal University Hospital, Madrid, Spain
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Rodriguez-Perales S, Torres-Ruiz R, Suela J, Acquadro F, Martin MC, Yebra E, Ramirez JC, Alvarez S, Cigudosa JC. Truncated RUNX1 protein generated by a novel t(1;21)(p32;q22) chromosomal translocation impairs the proliferation and differentiation of human hematopoietic progenitors. Oncogene 2015; 35:125-34. [DOI: 10.1038/onc.2015.70] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 01/21/2015] [Accepted: 02/02/2015] [Indexed: 12/15/2022]
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Affiliation(s)
- X Wortsman
- Department of Radiology and Dermatology, IDIEP-Institute for Diagnostic Imaging and Research of the Skin and Soft Tissues, Clinica Servet, Faculty of Medicine, University of Chile, Santiago, Chile
| | - S Alvarez
- Department of Dermatology, Faculty of Medicine, Pontifical Catholic University of Chile, Santiago, Chile
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Moldovan M, Romer Rosberg M, Alvarez S, Klein D, Martini R, Krarup C. P972: NaV1.8 channel dysfunction in demyelinating Charcot-Marie-Tooth disease – insights from mice heterozygously deficient for the myelin protein P0 gene. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)51006-1] [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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Hervas Moron A, Béjar M, Alvarez S, Yanowski K, Ordóñez J, Rodríguez-Patrón R, García-Galloway E, Casanueva R, Marcos S, Ramos A. EP-1311: Fertility in prostate cancer patients treated with radiation therapy. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31429-8] [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: 11/17/2022]
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Marchini T, Magnani N, Paz M, Vanasco V, Tasat D, González Maglio D, Alvarez S, Evelson P. Time course of systemic oxidative stress and inflammatory response induced by an acute exposure to Residual Oil Fly Ash. Toxicol Appl Pharmacol 2014; 274:274-82. [DOI: 10.1016/j.taap.2013.11.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 11/18/2013] [Accepted: 11/19/2013] [Indexed: 11/24/2022]
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Alvarez S, Suazo C, Boltansky A, Ursu M, Carvajal D, Innocenti G, Vukusich A, Hurtado M, Villanueva S, Carreño J, Rogelio A, Irarrazabal C. Urinary Exosomes as a Source of Kidney Dysfunction Biomarker in Renal Transplantation. Transplant Proc 2013; 45:3719-23. [DOI: 10.1016/j.transproceed.2013.08.079] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Menezes J, Makishima H, Gomez I, Acquadro F, Gómez-López G, Graña O, Dopazo A, Alvarez S, Trujillo M, Pisano DG, Maciejewski JP, Cigudosa JC. CSF3R T618I co-occurs with mutations of splicing and epigenetic genes and with a new PIM3 truncated fusion gene in chronic neutrophilic leukemia. Blood Cancer J 2013; 3:e158. [PMID: 24212483 PMCID: PMC3880438 DOI: 10.1038/bcj.2013.55] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- J Menezes
- Molecular Cytogenetics Group, Human Cancer Genetics Program, Spanish National Cancer Research Centre-CNIO, Madrid, Spain
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Pfeffer J, Alvarez S. [Is the IVF/ICSI sequence with fresh transfer soon to be obsolete? Innovation in MAP: freezing of all embryos]. Gynecol Obstet Fertil 2013; 41:569-570. [PMID: 24139814 DOI: 10.1016/j.gyobfe.2013.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Affiliation(s)
- J Pfeffer
- Association SAMPIL, 61, boulevard Victor-Hugo, 92200 Neuilly-sur-Seine, France(2); Laboratoire ZTP- centre AMP, clinique de la DHUYS, 1, rue Pierre-et-Marie-Currie, 93170 Bagnolet, France(3)
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Cohen-Bacrie M, Belloc S, Dalleac A, Alvarez S, Hazout A, de Mouzon J. Cigarette smoking does not affect female ovarian reserve. Analysis of a cohort of 1964 consecutive blood samples evaluating hormonal ovarian status. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1518] [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: 11/30/2022]
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Cohen-Bacrie M, Belloc S, Olivennes F, Aubriot F, Alvarez S, de Mouzon J. High levels of basal AMH are not detrimental for IVF/ICSI outcomes. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.446] [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: 10/26/2022]
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Marchini T, Magnani N, D'Annunzio V, Tasat D, Gelpi RJ, Alvarez S, Evelson P. Impaired cardiac mitochondrial function and contractile reserve following an acute exposure to environmental particulate matter. Biochim Biophys Acta Gen Subj 2013. [PMID: 23201196 DOI: 10.1016/j.bbagen.2012.11.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND It has been suggested that mitochondrial function plays a central role in cardiovascular diseases associated with particulate matter inhalation. The aim of this study was to evaluate this hypothesis, with focus on cardiac O2 and energetic metabolism, and its impact over cardiac contractility. METHODS Swiss mice were intranasally instilled with either residual oil fly ash (ROFA) (1.0 mg/kg body weight) or saline solution. After 1, 3 or 5 h of exposure, O2 consumption was evaluated in heart tissue samples. Mitochondrial respiration, respiratory chain complexes activity, membrane potential and ATP content and production rate were assessed in isolated mitochondria. Cardiac contractile reserve was evaluated according to the Langendorff technique. RESULTS Three hours after ROFA exposure, tissue O2 consumption was significantly decreased by 35% (from 1180 +/- 70 to 760 +/- 60 ng-at O/min g tissue), as well as mitochondrial rest (state 4) and active (state 3) respiration, by 30 and 24%, respectively (control state 4: 88 +/- 5 ng-at O/min mg protein; state 3: 240 +/- 20 ng-at O/min mg protein). These findings were associated with decreased complex II activity, mitochondrial depolarization and deficient ATP production. Even though basal contractility was not modified (control: 75 +/- 5 mm Hg), isolated perfused hearts failed to properly respond to isoproterenol in ROFA-exposed mice. Tissue O2 consumption rates positively correlated with cardiac contractile state in controls (r2 = 0.8271), but not in treated mice (r2 = 0.1396). GENERAL SIGNIFICANCE The present results show an impaired mitochondrial function associated with deficient cardiac contractility, which could represent an early cardiovascular alteration after the exposure to environmental particulate matter.
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Affiliation(s)
- T Marchini
- Laboratory of Free Radical Biology (IBIMOL-CONICET), School of Pharmacy and Biochemistry, University of Buenos Aires, Junín 954 (C1113AAB), Buenos Aires, Argentina
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Hervás A, Béjar M, Alvarez S, Yanowsky K, Ordoñez J, Rodríguez-patrón R, García-galloway E, Sánchez R, Marcos S, Polo A, Gomez V, Burgos F, García Sagredo J, Ramos A. Fertility in prostate cancer patients treated with radiation therapy. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.485] [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: 10/26/2022] Open
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Chonco L, Pion M, Vacas E, Rasines B, Maly M, Serramía M, López-Fernández L, De la Mata J, Alvarez S, Gómez R, Muñoz-Fernández M. Carbosilane dendrimer nanotechnology outlines of the broad HIV blocker profile. J Control Release 2012; 161:949-58. [DOI: 10.1016/j.jconrel.2012.04.050] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Accepted: 04/26/2012] [Indexed: 12/27/2022]
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Gómez-Casares MT, García-Alegria E, López-Jorge CE, Ferrándiz N, Blanco R, Alvarez S, Vaqué JP, Bretones G, Caraballo JM, Sánchez-Bailón P, Delgado MD, Martín-Perez J, Cigudosa JC, León J. MYC antagonizes the differentiation induced by imatinib in chronic myeloid leukemia cells through downregulation of p27(KIP1.). Oncogene 2012; 32:2239-46. [PMID: 22710719 DOI: 10.1038/onc.2012.246] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Chronic myeloid leukemia (CML) progresses from a chronic to a blastic phase where the leukemic cells are proliferative and undifferentiated. The CML is nowadays successfully treated with BCR-ABL kinase inhibitors as imatinib and dasatinib. In the CML-derived K562 cell line, low concentrations of imatinib induce proliferative arrest and erythroid differentiation. We found that imatinib upregulated the cell cycle inhibitor p27(KIP1) (p27) in a time- and -concentration dependent manner, and that the extent of imatinib-mediated differentiation was severely decreased in cells with depleted p27. MYC (c-Myc) is a transcription factor frequently deregulated in human cancer. MYC is overexpressed in untreated CML and is associated to poor response to imatinib. Using K562 sublines with conditional MYC expression (induced by Zn(2+) or activated by 4-hydroxy-tamoxifen) we show that MYC prevented the erythroid differentiation induced by imatinib and dasatinib. The differentiation inhibition is not due to increased proliferation of MYC-expressing clones or enhanced apoptosis of differentiated cells. As p27 overexpression is reported to induce erythroid differentiation in K562, we explored the effect of MYC on imatinib-dependent induction of p27. We show that MYC abrogated the imatinib-induced upregulation of p27 concomitantly with the differentiation inhibition, suggesting that MYC inhibits differentiation by antagonizing the imatinib-mediated upregulation of p27. This effect occurs mainly by p27 protein destabilization. This was in part due to MYC-dependent induction of SKP2, a component of the ubiquitin ligase complex that targets p27 for degradation. The results suggest that, although MYC deregulation does not directly confer resistance to imatinib, it might be a factor that contributes to progression of CML through the inhibition of differentiation.
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Affiliation(s)
- M T Gómez-Casares
- Servicio de Hematología and Unidad de Investigación, Hospital Universitario Dr Negrín, Las Palmas, Spain
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Zampini IC, Villena J, Salva S, Herrera M, Isla MI, Alvarez S. Potentiality of standardized extract and isolated flavonoids from Zuccagnia punctata for the treatment of respiratory infections by Streptococcus pneumoniae: in vitro and in vivo studies. J Ethnopharmacol 2012; 140:287-292. [PMID: 22285202 DOI: 10.1016/j.jep.2012.01.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 01/12/2012] [Accepted: 01/13/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Zuccagnia punctata Cav. (Fabaceae) is a monotypic species distributed in western Argentina and is traditionally used for the treatment of bacterial and fungal infections. The aim of this study was to demonstrated the antibacterial activity of the Zuccagnia punctata standardized extract and the structurally related non-methoxylated flavonoids with similar pattern of substitution and differences in ring C present in this plant species: 7-hydroxyflavanone (HF), 2',4'-dihydroxychalcone (DHC) and 3,7-dihydroxyflavone (DHF), against Streptococcus pneumoniae clinical isolates using in vitro and in vivo models. MATERIALS AND METHODS MIC values of natural products were determined by agar macrodilution method. In vivo activities were investigated in a Streptococcus pneumoniae infection model in mice. Lung and blood samples were obtained for bacterial cell counts. The serum was used by biochemical analysis (alanine transaminase, aspartate transaminase, urea and creatinine) in order to evaluate the toxicity of natural products. RESULTS All samples showed antimicrobial activity in vitro with MIC values between 50 and 500μg/ml. Zuccagnia punctata extract (1mg/mice) and HF (1mg/mice) significantly reduced the number of viable Streptococcus pneumoniae in lung (p<0.01) while lower quantities has not effect. Therefore, the present study has shown that intake once or twice a day of 1mg of Zuccagnia punctata extract or HF for seven days did not result in toxicity. CONCLUSIONS Our results showed that Zuccagnia punctata extract as well as one of its isolated flavonoids, 7-hydroxyflavanone, could be useful for the development of a novel respiratory infections treatment.
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Affiliation(s)
- I C Zampini
- Laboratorio de Bioquímica y Clínica Experimental, Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, 4000 San Miguel de Tucumán, Tucumán, Argentina
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Maiques-Diaz A, Chou FS, Wunderlich M, Gómez-López G, Jacinto FV, Rodriguez-Perales S, Larrayoz MJ, Calasanz MJ, Mulloy JC, Cigudosa JC, Alvarez S. Chromatin modifications induced by the AML1-ETO fusion protein reversibly silence its genomic targets through AML1 and Sp1 binding motifs. Leukemia 2012; 26:1329-37. [DOI: 10.1038/leu.2011.376] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Barba-Espín G, Clemente-Moreno MJ, Alvarez S, García-Legaz MF, Hernández JA, Díaz-Vivancos P. Salicylic acid negatively affects the response to salt stress in pea plants. Plant Biol (Stuttg) 2011; 13:909-17. [PMID: 21973182 DOI: 10.1111/j.1438-8677.2011.00461.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We studied the effect of salicylic acid (SA) treatment on the response of pea plants to salinity. Sodium chloride (NaCl)-induced damage to leaves was increased by SA, which was correlated with a reduction in plant growth. The content of reduced ascorbate and glutathione in leaves of salt-treated plants increased in response to SA, although accumulation of the respective oxidised forms occurred. An increase in hydrogen peroxide also occurred in leaves of salt-exposed plants treated with SA. In the absence of NaCl, SA increased ascorbate peroxidase (APX; 100 μm) and glutathione-S transferase (GST; 50 μm) activities and increased catalase (CAT) activity in a concentration-dependent manner. Salinity decreased glutathione reductase (GR) activity, but increased GST and CAT activity. In salt-stressed plants, SA also produced changes in antioxidative enzymes: 100 μm SA decreased APX but increased GST. Finally, a concentration-dependent increase in superoxide dismutase (SOD) activity was induced by SA treatment in salt-stressed plants. Induction of PR-1b was observed in NaCl-stressed plants treated with SA. The treatment with SA, as well as the interaction between salinity and SA treatment, had a significant effect on PsMAPK3 expression. The expression of PsMAPK3 was not altered by 70 mm NaCl, but was statistically higher in the absence than in the presence of SA. Overall, the results show that SA treatment negatively affected the response of pea plants to NaCl, and this response correlated with an imbalance in antioxidant metabolism. The data also show that SA treatment could enhance the resistance of salt-stressed plants to possible opportunistic pathogen attack, as suggested by increased PR-1b gene expression.
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Affiliation(s)
- G Barba-Espín
- Grupo de Biotecnología de Frutales, Department of Mejora Vegetal, Campus Espinardo, Murcia, Spain
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Navarro P, López L, González M, Sangrós M, Liévano P, Alvarez S, Abós D. [Peritoneal strumosis: an extension study with (99m)Tc-pertecnectate]. Rev Esp Med Nucl Imagen Mol 2011; 31:97-100. [PMID: 21889231 DOI: 10.1016/j.remn.2011.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 06/02/2011] [Accepted: 06/10/2011] [Indexed: 11/15/2022]
Abstract
We report the case of a 35-year-old nulliparous woman, with a previous history of ovarian cystectomy diagnosed 3 years earlier due a struma ovarii type of monodermal teratoma in the right ovary and a hemorrhagic cyst in the left ovary. Progressive growth of the left adnexal mass was observed in the periodic medical check-ups. Due to this, a second laparoscopy was performed and, based on the findings, a left ovarian cystectomy, right salpingectomy and resection of multiple peritoneal implants were carried out. The pathology diagnosis was left struma ovarii and peritoneal strumosis. A whole body and SPECT/CT scan with (99m)Tc-pertechnetate was performed to detect possible peritoneal implants. This study helped to make the therapeutic decision.
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Affiliation(s)
- P Navarro
- Servicio de Medicina Nuclear, Hospital Universitario Miguel Servet, Zaragoza, España.
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Belloc S, de Mouzon J, Lichtblau I, Cohen-Bacrie M, Alvarez S, Cohen-Bacrie P. Is obesity deleterious to male fertility potential? Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.903] [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: 10/17/2022]
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47
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Fuentes A, Alvarez S, Márquez E, Velasquez S. [Giant pulmonary bulla diagnosed as spontaneous pneumothorax]. Rev Esp Anestesiol Reanim 2011; 58:398. [PMID: 21797096 DOI: 10.1016/s0034-9356(11)70096-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- A Fuentes
- Servicio de Anestesiologya y Reanimacidn, Hospital de Terrassa, Consorci Sanitari de Terrassa, Barcelona.
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García P, Alvarez S, Muñoz A, Lopez P, Riesco M, Adeva Alfonso J, Martin M. Neoadjuvant bevacizumab treatment for colorectal liver metastasis: A retrospective study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
613 Background: Patients with colorectal cancer (CRC) and liver metastases have a poor prognosis and may benefit from perioperative chemotherapy and disease resection. Bevacizumab is proven to improve outcomes in patients with metastatic CRC. Methods: This is a retrospective chart review performed in colorectal patients with liver metastases. All the patients were > 18 years old and have undergone bevacizumab therapy as neoadjuvant treatment. Results: 20 patients were analyzed. Baseline characteristics: median age 54.8 (49.2-65.8) years; male 45%; ECOG 0/1 40%/60%, 13 patients had metastatic disease at the time of their initial diagnosis. Median time from diagnosis of metastasis to surgery was 7.1 (5.4-9.6) months. Primary tumour locations were rectum (21.4%), colon (64.3%) and colon and rectum (14.3%). 80% and 20% of the patients received one and two lines of treatment before surgery, respectively. Mean cycles were 7.3±3.4 and 3.5±1.8 in first and second line, respectively. In 95% of the patients resection was curative. Mean number of resected metastasis was 3.4±2.8. 90%·of the patients achieved complete resection (R0) and 10% incomplete resection (R1). All the synchronous primary tumours (15) were resected. Among 16 valuable patients for pathological response, 1 (6.3%) experienced a pCR, 11 (68.8%) major response and 4 (25%) minor response. The median DFS was 12.2 months. The median OS was 48.9 months. Only one patient experienced grade 3-4 toxicity (rectal haemorraghe). Most frequent surgical complications were anastomotic filtration (8.7%) and wound infection (8.7%). Most frequent hepatic toxicities after surgery were steatohepatitis (25%) and sinusoidal dilatation (20%). Conclusions: These data provide evidence that neoadjuvant chemotherapy including bevacizumab can be safely administered in patients with mCRC. No significant financial relationships to disclose.
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Affiliation(s)
- P. García
- Hospital Gregorio Marañon, Madrid, Spain; Medical Oncology Service, Hospital General Universitario Gregorio Marañon, Madrid, Spain; Hospital General Universitario Gregorio Marañon, Madrid, Spain; Departamento Oncologia Medica, Hospital Clinico San Carlos, Madrid, Spain
| | - S. Alvarez
- Hospital Gregorio Marañon, Madrid, Spain; Medical Oncology Service, Hospital General Universitario Gregorio Marañon, Madrid, Spain; Hospital General Universitario Gregorio Marañon, Madrid, Spain; Departamento Oncologia Medica, Hospital Clinico San Carlos, Madrid, Spain
| | - A. Muñoz
- Hospital Gregorio Marañon, Madrid, Spain; Medical Oncology Service, Hospital General Universitario Gregorio Marañon, Madrid, Spain; Hospital General Universitario Gregorio Marañon, Madrid, Spain; Departamento Oncologia Medica, Hospital Clinico San Carlos, Madrid, Spain
| | - P. Lopez
- Hospital Gregorio Marañon, Madrid, Spain; Medical Oncology Service, Hospital General Universitario Gregorio Marañon, Madrid, Spain; Hospital General Universitario Gregorio Marañon, Madrid, Spain; Departamento Oncologia Medica, Hospital Clinico San Carlos, Madrid, Spain
| | - M. Riesco
- Hospital Gregorio Marañon, Madrid, Spain; Medical Oncology Service, Hospital General Universitario Gregorio Marañon, Madrid, Spain; Hospital General Universitario Gregorio Marañon, Madrid, Spain; Departamento Oncologia Medica, Hospital Clinico San Carlos, Madrid, Spain
| | - J. Adeva Alfonso
- Hospital Gregorio Marañon, Madrid, Spain; Medical Oncology Service, Hospital General Universitario Gregorio Marañon, Madrid, Spain; Hospital General Universitario Gregorio Marañon, Madrid, Spain; Departamento Oncologia Medica, Hospital Clinico San Carlos, Madrid, Spain
| | - M. Martin
- Hospital Gregorio Marañon, Madrid, Spain; Medical Oncology Service, Hospital General Universitario Gregorio Marañon, Madrid, Spain; Hospital General Universitario Gregorio Marañon, Madrid, Spain; Departamento Oncologia Medica, Hospital Clinico San Carlos, Madrid, Spain
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Garcia-Alfonso P, Alvarez S, Munoz A, Lopez P, Riesco C, Adeva J, Martin M. Safety and efficacy of first-line XELIRI with or without bevacizumab in patients with metastatic colorectal cancer: Analysis of two phase II studies. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.560] [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: 11/20/2022] Open
Abstract
560 Background: The safety and efficacy of first-line XELIRI (capecitabine in combination with irinotecan) and XELIRI plus bevacizumab (BEV) have been evaluated in patients with metastatic colorectal cancer (mCRC). To date, however, no randomized studies comparing these regimens have been performed. This retrospective analysis compared efficacy and safety data for the two regimens from separate phase II studies performed at a single institution. Methods: Patients with histologically documented metastatic or recurrent CRC and no prior treatment for advanced disease received irinotecan 175 mg/m2 on day 1 and oral capecitabine 1,000 mg/m2 twice daily on days 2-8 every 2 weeks (XELIRI study). For patients age ≥65 years, the starting doses of irinotecan and capecitabine were reduced to 140 mg/m2 and 750 mg/m2, respectively. In the second study, patients received the same regimen plus BEV 5 mg/kg on day 1 (XELIRI + BEV study). Results: A total of 53 and 46 patients were entered into the XELIRI and XELIRI + BEV studies, respectively. Patient characteristics were generally similar in both groups. Efficacy results for the ITT populations are summarized in the Table. Patients treated with XELIRI + BEV had a significantly higher ORR and longer median TTP vs. XELIRI alone and a numerically longer median OS was observed (p=NS). The overall incidence of adverse events (all grades or grade 3/4) was similar in the two groups, although alopecia, mucositis, hand–foot syndrome, and haemorrhage were more common with XELIRI + BEV vs. XELIRI alone (all p<0.05). Conclusions: In this retrospective comparison of two studies, the addition of BEV to XELIRI appeared to improve outcome relative to XELIRI alone in the first-line treatment of patients with mCRC. The overall incidence of adverse events was similar in the two groups. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
| | - S. Alvarez
- H. G. U. Gregorio Maranon, Madrid, Spain
| | - A. Munoz
- H. G. U. Gregorio Maranon, Madrid, Spain
| | - P. Lopez
- H. G. U. Gregorio Maranon, Madrid, Spain
| | - C. Riesco
- H. G. U. Gregorio Maranon, Madrid, Spain
| | - J. Adeva
- H. G. U. Gregorio Maranon, Madrid, Spain
| | - M. Martin
- H. G. U. Gregorio Maranon, Madrid, Spain
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