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Article ; Online: Stabilization of O-O Bonds by d

Taylor, Zoe N / Perez, Arnaud J / Coca-Clemente, José A / Braga, Filipe / Drewett, Nicholas E / Pitcher, Michael J / Thomas, William J / Dyer, Matthew S / Collins, Christopher / Zanella, Marco / Johnson, Timothy / Day, Sarah / Tang, Chiu / Dhanak, Vinod R / Claridge, John B / Hardwick, Laurence J / Rosseinsky, Matthew J

Journal of the American Chemical Society

2019 Volume 141, Issue 18, Page(s) 7333–7346

Abstract: Multinary lithium oxides with the rock salt structure are of technological importance as cathode materials in rechargeable lithium ion batteries. Current state-of-the-art cathodes such as ... ...

Abstract	Multinary lithium oxides with the rock salt structure are of technological importance as cathode materials in rechargeable lithium ion batteries. Current state-of-the-art cathodes such as LiNi
Language	English
Publishing date	2019-04-24
Publishing country	United States
Document type	Journal Article
ZDB-ID	3155-0
ISSN	1520-5126 ; 0002-7863
ISSN (online)	1520-5126
ISSN	0002-7863
DOI	10.1021/jacs.8b13633
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Article ; Online: Isoetin 2′- O -α- l -arabinopyranoside-5′- O -β- d -glucopyranoside

Mayra Galarza Pérez / Fabian Fell / Dimitrina Zheleva-Dimitrova / Christian Zidorn

Molbank, Vol 2023, Iss M1652, p M

2023 Volume 1652

Abstract: Isoetin derivatives are a rare class of flavonoids with a rather erratic occurrence across the plant kingdom. The Cichorieae tribe of the Asteraceae family has proven to be a rich source and a centre of chemical diversity of this class of compounds. Here, ...

Abstract	Isoetin derivatives are a rare class of flavonoids with a rather erratic occurrence across the plant kingdom. The Cichorieae tribe of the Asteraceae family has proven to be a rich source and a centre of chemical diversity of this class of compounds. Here, we describe the chromatographic isolation and mainly NMR-based structure elucidation of a previously undescribed isoetin derivative from Leontodon hispidus L. (Asteraceae, Cichorieae). The chemophenetic relevance is discussed briefly.
Keywords	flavonoids ; isoetin derivatives ; NMR spectroscopy ; Asteraceae ; chemophenetics ; Inorganic chemistry ; QD146-197
Language	English
Publishing date	2023-05-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
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Article: Correlación entre la insuficiencia o deficiencia de los niveles de vitamina D y las interleucinas 1β y 6.

Zavala-Jonguitud, Luis Fernando / Anda, Juan Carlos / Flores-Padilla, Miguel Guillermo / Pérez, Carla / Juárez-Villa, José Daniel

Revista alergia Mexico (Tecamachalco, Puebla, Mexico : 1993)

2021 Volume 68, Issue 3, Page(s) 180–184

Abstract: Objectives: The primary objective of this study was to define the relationship between vitamin D ... objective, to measure the prevalence of insufficiency/ deficiency of vitamin D in the same population ... with insufficiency or deficiency of vitamin D. The correlation between vitamin D and interleukins was measured using ...

Title translation	Correlation between insufficiency or deficiency of vitamin D levels and interleukins 1β and 6.
Abstract	Objectives: The primary objective of this study was to define the relationship between vitamin D levels and interleukins (IL) 1β and 6 as inflammatory markers in a healthy population. As a secondary objective, to measure the prevalence of insufficiency/ deficiency of vitamin D in the same population. Methods: A sample of 43 healthy blood donors, without chronic-degenerative, inflammatory, or infectious diseases, and without obesity, was selected. Serum levels of IL-1β and IL-6 were measured in individuals with insufficiency or deficiency of vitamin D. The correlation between vitamin D and interleukins was measured using Spearman's rho. Results: No correlation was found between levels of vitamin D and interleukins. In addition, a prevalence of insufficiency/deficiency of vitamin D was found in 95.3% of the sample. Conclusions: In healthy subjects with deficiency or insufficiency of vitamin D, there is no association between the levels of this vitamin and IL-1β and IL-6.
MeSH term(s)	Humans ; Interleukin-1beta ; Interleukins ; Vitamin D ; Vitamin D Deficiency/epidemiology ; Vitamins
Chemical Substances	Interleukin-1beta ; Interleukins ; Vitamins ; Vitamin D (1406-16-2)
Language	Spanish
Publishing date	2021-10-12
Publishing country	Mexico
Document type	Journal Article
ZDB-ID	639125-4
ISSN	0002-5151
ISSN	0002-5151
DOI	10.29262/ram.v68i3.885
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Article ; Online: Geoquímica de los suelos de la D.O. Uclés

Bravo a Sandra / Jesús García-Navarro Francisco / Amorós Ángel / Pérez-de-los-Reyes Caridad / Jiménez Ballesta Raimundo

E3S Web of Conferences, Vol 50, p

2018 Volume 01024

Abstract: La D.O. Uclés es una de las más jóvenes de España. Se encuentra situada entre las provincias ...

Abstract	La D.O. Uclés es una de las más jóvenes de España. Se encuentra situada entre las provincias de Cuenca y Toledo, ocupando una superficie total de viñedo de 1.700 ha. Se han estudiado 17 perfiles de la zona occidental, al Oeste de la Sierra de Altomira, los cuales se muestrearon y clasificaron siguiendo las nomas FAO (1996). Los suelos estudiados se caracterizan por tener: pH alcalino (pH = 8,24), porcentajes de arcilla de un 20%, valores de conductividad eléctrica elevados (0,44 dS/m) y contenidos altos en CaCO3 (22%) El elemento mayoritario con mayor abundancia relativa es Si (con un valor medio de 196,6 g/kg), seguido por Ca (120,22 g/kg) y Al (63,86 g/kg). Entre los elementos traza llama la atención los elevados contenido en Sr (445,75 mg/kg) Rb (81,64 mg/kg) y Ba (223,61 mg/kg). Se han podido diferenciar varios grupos de suelos utilizando los contenidos en los elementos químicos anteriores, las características físico-químicas y las elevadas correlaciones entre contenido totales en hierro y aluminio con ciertos elementos químicos del grupo de las tierras raras.
Keywords	Environmental sciences ; GE1-350
Language	English
Publishing date	2018-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
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Article ; Online: O-26 ASPARTATE AMINOTRANSFERASE, AGE AND D-DIMER IN COVID-19 PATIENTS

Fátima Higuera-de la Tijera / Alfredo Servín-Caamaño / Daniel Reyes-Herrera / Argelia Flores-López / Enrique J.A. Robiou-Vivero / Felipe Martínez-Rivera / Victor Galindo-Hernández / Catalina Casillas-Suárez / Oscar Chapa-Azuela / Alfonso Chávez-Morales / Víctor Hugo Rosales-Salyano / Billy Jiménez-Bobadilla / María Luisa Hernández-Medel / Benjamín Orozco-Zúñiga / Jed Raful Zacarías-Ezzat / Santiago Camacho-Hernández / José Luis Pérez-Hernández

Annals of Hepatology, Vol 24, Iss , Pp 100513- (2021)

A USEFUL PROGNOSTIC MODEL

2021

Abstract: ... called AAD (Age-AST-D dimer) was constructed. Results: 166 patients were included, 114(68.7%) men, mean ... 0.003), AST 325.3±382.4 vs. 52.8±47.1; P=0.001), LDH (764.6±401.9 vs. 461.0±185.6; P=0.001), D dimer ... to SARS, together with elevation of D-dimer and age early (at admission) and efficiently predict ...

Abstract	Introduction: Some patients with SARSCov-2 infection develop severe disease (SARS); however, the factors associated with severity are not yet fully understood. Some reports indicate that liver injury may be a poor prognostic factor. Aim: To identify the biochemical factors related to the development of SARS with mechanical ventilation (MV) requirement in patients with SARSCov-2 and COVID-19. Methods Type of study: Observational. Cohort study. Procedure: Data from COVID-19 patients were collected at admission time to a tertiary care center. Differential factors were identified between seriously ill SARS+MV patients versus stable patients without MV. Transformation to the natural logarithm of significant variables was performed and multiple linear regression was applied, then a predictive model of severity called AAD (Age-AST-D dimer) was constructed. Results: 166 patients were included, 114(68.7%) men, mean age 50.6±13.3 years-old, 27(16.3%) developed SARS+MV. In the comparative analysis between those with SARS+MV versus stable patients without MV we found significant raises of ALT (225.4±341.2 vs. 41.3±41.1; P=0.003), AST 325.3±382.4 vs. 52.8±47.1; P=0.001), LDH (764.6±401.9 vs. 461.0±185.6; P=0.001), D dimer (7765±9109 vs. 1871±4146; P=0.003), age (58.6±12.7 vs. 49.1±12.8; P=0-001). The results of the regression are shown in the Table, where model 3 was the one that best explained the development of SARS+MV; with these variables was constructed the model called AAD, where: [AAD= 3.896 + ln(age)x-0.218 + ln(AST)x-0.185 + ln(DD)x0.070], where a value ≤ 2.75 had sensitivity=0.797 and 1-specificity= 0.391, AUROC=0.74 (95%CI: 0.62-0.86; P<0.0001), to predict the risk of developing SARS+MV (OR=5.8, 95%CI: 2.2-15.4; P=0.001). Conclusions: Elevation of AST (probable marker of liver damage) is an important predictor of progression to SARS, together with elevation of D-dimer and age early (at admission) and efficiently predict which patients will potentially require MV.
Keywords	Specialties of internal medicine ; RC581-951
Subject code	610
Language	English
Publishing date	2021-09-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
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Article ; Online: Structural study of 1-(2', 3'-O-isopropylidene-(α-d-allo and -β-l-talofuranosyluron)-5'-cyanohydrin)uracil stereoisomers by NMR spectroscopy and theoretical methods.

Martínez-Casares, Rubria Marlen / Méndez, Herminia Inés Pérez / Alvarez, Norberto Manjarrez / Mendoza, Ernesto Sánchez / Oba, Aida Solís / Vázquez, Liliana Hernández

Magnetic resonance in chemistry : MRC

2017 Volume 55, Issue 8, Page(s) 766–772

Language	English
Publishing date	2017-02-24
Publishing country	England
Document type	Letter ; Research Support, Non-U.S. Gov't
ZDB-ID	1475029-6
ISSN	1097-458X ; 0749-1581
ISSN (online)	1097-458X
ISSN	0749-1581
DOI	10.1002/mrc.4580
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Article ; Online: 3′- O -β- d -glucopyranosyl-α,4,2′,4′,6′-pentahydroxy-dihydrochalcone, from Bark of Eysenhardtia polystachya Prevents Diabetic Nephropathy via Inhibiting Protein Glycation in STZ-Nicotinamide Induced Diabetic Mice

Rosa Martha Pérez Gutierrez / Abraham Heriberto García Campoy / Silvia Patricia Paredes Carrera / Alethia Muñiz Ramirez / José Maria Mota Flores / Sergio Odin Flores Valle

Molecules, Vol 24, Iss 7, p

2019 Volume 1214

Abstract: ... the cause of diabetic nephropathy (DN) in diabetic patients. Dihydrochalcone 3′- O -β- d -glucopyranosyl α,4 ...

Abstract	Previous studies have shown that accumulation of advanced glycation end products (AGEs) can be the cause of diabetic nephropathy (DN) in diabetic patients. Dihydrochalcone 3′- O -β- d -glucopyranosyl α,4,2′,4′,6′-pentahydroxy–dihydrochalcone ( 1 ) is a powerful antiglycation compound previously isolated from Eysenhardtia polystachya . The aim was to investigate whether ( 1 ) was able to protect against diabetic nephropathy in streptozotocin (STZ)-induced diabetic mice, which displayed renal dysfunction markers such as body weight, creatinine, uric acid, serum urea, total urinary protein, and urea nitrogen in the blood (BUN). In addition, pathological changes were evaluated including glycated hemoglobin (HbA1c), advanced glycation end products (AGEs) in the kidney, as well as in circulation level and pro-inflammatory markers ICAM-1 levels in diabetic mice. After 5 weeks, these elevated markers of dihydrochalcone treatment (25, 50 and 100 mg/kg) were significantly ( p < 0.05) attenuated. In addition, they ameliorate the indices of renal inflammation as indicated by ICAM-1 markers. The kidney and circulatory AGEs levels in diabetic mice were significantly ( p < 0.05) attenuated by ( 1 ) treatment. Histological analysis of kidney tissues showed an important recovery in its structure compared with the diabetic group. It was found that the compound ( 1 ) attenuated the renal damage in diabetic mice by inhibiting AGEs formation.
Keywords	dihydrochalcone ; advanced glycation end-product ; Eysenhardtia polystachya ; diabetic mice ; renoprotective ; Organic chemistry ; QD241-441
Subject code	616
Language	English
Publishing date	2019-03-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
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Article ; Online: Synthesis of diospongin A, ent-diospongin A and C-5 epimer of diospongin B from tri-O-acetyl-D-glucal

Andrea Zúñiga / Manuel Pérez / Zoila Gándara / Alioune Fall / Generosa Gómez / Yagamare Fall

ARKIVOC, Vol 2015, Iss 7, Pp 195-

2015 Volume 215

Keywords	Organic chemistry ; QD241-441
Language	English
Publishing date	2015-10-01T00:00:00Z
Publisher	Arkat USA, Inc.
Document type	Article ; Online
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Article ; Online: Volatile compounds as markers of ageing in Tempranillo red wines from La Mancha D.O. stored in oak wood barrels.

Castro-Vázquez, Lucía / Alañón, M Elena / Calvo, Elena / Cejudo, M Jesús / Díaz-Maroto, M Consuelo / Pérez-Coello, M Soledad

Journal of chromatography. A

2011 Volume 1218, Issue 30, Page(s) 4910–4917

Abstract: ... La Mancha D.O. wines (cv. Tempranillo) on the basis of oak barrel contact period. Samples were ...

Abstract	Solid-phase extraction cartridges (SPE)-GC/MS method was used to analyse red wines aromas. The matrix effect was studied with chemicals standard prepared in synthetic wines with water/alcohol solutions (12% ethanol, v/v) following the procedure proposed. The method offers good reproducibility since the relative standard deviations (RSD%) for the volatile compounds levels were less than 9%. This method was used to differentiate the aroma of one hundred mono-varietal young, crianza, reserva and gran reserva La Mancha D.O. wines (cv. Tempranillo) on the basis of oak barrel contact period. Samples were checked at ten time points over 36 months. Sixty important wine odorants, such as volatile phenols, vanillin derivatives, lactones, norisoprenoids, benzene compounds, esters and terpenols, can be quantitatively determined in a single run. Results showed significant quantitative differences in the volatile profiles of wines depending on the length of time in contact with wood, even in wines belonging to the same commercial category. Stepwise multiple linear regression (SMLR) was used to obtain a model that predicted the time of barrel ageing to which wines were submitted in relation with the wine volatile composition. A successful function based on eight compounds with a mean deviation of 0.37 months in the predictions, was obtained.
MeSH term(s)	Analysis of Variance ; Food Packaging ; Gas Chromatography-Mass Spectrometry ; Linear Models ; Odorants/analysis ; Principal Component Analysis ; Quercus ; Reproducibility of Results ; Spain ; Time Factors ; Volatile Organic Compounds/analysis ; Volatile Organic Compounds/chemistry ; Volatile Organic Compounds/classification ; Wine/analysis ; Wine/classification
Chemical Substances	Volatile Organic Compounds
Language	English
Publishing date	2011-07-29
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1171488-8
ISSN	1873-3778 ; 0021-9673
ISSN (online)	1873-3778
ISSN	0021-9673
DOI	10.1016/j.chroma.2010.12.094
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Conference proceedings: Use of cover crops in D.O.Ca. Rioja (Spain) vineyards

Ibanez, S. / Perez, J. L. / Peregrina, F. / Garcia-Escudero, E.

2011 , Page(s) 10 pp.

Title variant	Utilización de cubiertas vegetales en viñedos de la D.O.Ca. Rioja (España)
Institution	Instituto de Ciencias de la Vid y del Vino (CSIC-Universidad de La Rioja-Gobierno de La Rioja).\
Event/congress	Proceedings of the 34th OIV World Congress of Vine and Wine. 9th General Assembly of the OIV, 20-27 June 2011, Porto, Portugal
Language	Spanish ; English
Document type	Conference proceedings
Database	Viticulture and Oenology Abstracts

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