University of the East of Mexico

Oriente 1ra. Seccion, Mexico

University of the East of Mexico

Oriente 1ra. Seccion, Mexico
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Garcia-Rodriguez R.V.,University of Veracruz | Gutierrez-Rebolledo G.A.,University of Veracruz | Mendez-Bolaina E.,University of Veracruz | Mendez-Bolaina E.,University of the East of Mexico | And 6 more authors.
Journal of Ethnopharmacology | Year: 2014

Ethnopharmacological relevance Cnidoscolus chayamansa Mc Vaugh (Euphorbiaceae) is commonly known as 'chaya' in Central America. In South East Mexico, because of its high nutritional values, is an important part of the diet of many indigenous communities. Chaya is also used as a traditional remedy for the treatment of diabetes, rheumatism, gastrointestinal disorders and inflammation-related diseases. Although Cnidoscolus chayamansa is one of most used and valued medicinal plants, only few studies on documenting its pharmacological properties can be found. Materials and methods Dried leaves of Cnidoscolus chayamansa were subjected to a successive maceration using Hex, EtOAc and EtOH. The antioxidant activities of the extracts were tested using the DPPH radical scavenging, Ferric reducing/antioxidant power and total phenolic content assays. To determine the anti-inflammatory activity, the TPA-induced mouse ear edema and the carrageenan-induced mouse paw edema assays were used. The cardioprotective effects of the EtOH extract was determined using the ischemia/reperfusion (I/R) rat model. Finally, the acute toxicity was determined using Lorke's method. Results The results showed a similar anti-inflammatory activity (≈30%) for all extracts but only the EtOAc extract showed relevant activity when applied intraperitoneally. When tested for their antioxidant activity none of the extracts showed a significant activity suggesting that the antinflammatory activity is not related to a direct free radical scavenging of the extracts. Additionally, the EtOH extract showed a strong cardioprotective effect at 500 mg/kg when given orally. Both the EtOAc and the EtOH extract have a LD50 >5 g/kg, confirming their safety in acute oral administration. Conclusions All these results are relevant for a better understanding of the therapeutic used of Cnidoscolus chayamansa in the Mexican traditional medicine and highlights its cardioprotective potential. © 2013 Elsevier Ireland Ltd.

Cruz-Castillo J.G.,University of the East of Mexico | Tinoco-Rueda J.A.,University of the East of Mexico | Famiani F.,Universitaa Degli Studi Of Perugia
HortScience | Year: 2017

The fruit of Persea schiedeana is consumed in various rural regions of Mexico and Central America and is mainly sold in local markets. Information regarding the ecological conditions where it grows and the potential for its distribution in Mexico has been little studied. The States of Chiapas, Hidalgo, Oaxaca, Puebla, Tabasco, and Veracruz in Mexico were explored to locate P. schiedeana trees. The ecological conditions of the places where P. schiedeana was found were characterized using thematic cartography and by evaluating the ecological niches to identify potential areas for its distribution. The trees were found in wide physiographic, geological, and edaphic conditions, but they were primarily located in semiwarm humid and warm humid climates. Persea schiedeana trees grow from almost sea level to 2000 m in altitude. Zones with the best developmental conditions for P. schiedeana were in the region of the high mountains in the center of Veracruz and the highland zone of northern Oaxaca. The oil obtained from the fruit of P. schiedeana trees growing at 1300 m had high oleic acid content. This wild fruit has the potential for obtaining new products for cosmetic and alimentary industries. © 2017, American Society for Horticultural Science. All rights reserved.

Cruz-Castillo J.G.,University of the East of Mexico | Torres-Lima P.A.,Metropolitan Autonomous University
Revista Chapingo, Serie Horticultura | Year: 2017

The calla lily (Zantedeschia aethiopica) is an ornamental plant that grows in several regions of Mexico, and its use as a cut flower is very popular. 'Deja Vu' is the first calla lily variety registered in Mexico with the National Seed Certification and Inspection System, with plant breeder's title number 1478. The 'Deja Vu' spathe is white, pink and green; its size is equal to or greater than that of the white 'Criollo' calla lily and agronomic management is similar in both varieties. Its growth and production are adapted to tropical highland areas in Veracruz, Mexico at 2,000 m.

Aguirre-Hernandez E.,Instituto Nacional Of Psiquiatria Ramon Of La Fuente Muniz | Aguirre-Hernandez E.,Colegio de Mexico | Aguirre-Hernandez E.,University of the East of Mexico | Gonzalez-Trujano Ma.E.,Instituto Nacional Of Psiquiatria Ramon Of La Fuente Muniz | And 5 more authors.
Journal of Ethnopharmacology | Year: 2010

Aim of the study: Around the world, Tilia species have been used in traditional medicine for their properties as tranquilizer. Furthermore, Mexican species of Tilia have been grouped as Tilia americana var. mexicana, but their specific content in flavonoids is poorly described. In this study, inflorescences of Mexican Tilia were collected in three different regions of Mexico to compare their flavonoid content and anxiolytic-like response. Materials and methods: Flavonoid content was analyzed by using an HPLC-MS technique. For anxiolytic-like response, Tilia inflorescences extracts (from 10 to 300 mg/kg, i.p.) were tested in experimental models (open-field, hole-board and plus-maze tests, as well as sodium pentobarbital-induced hypnosis) in mice. Results: HPLC-MS analysis revealed specific peaks of flavonoid composition demonstrating some differences in these compounds in flowers and bracts depending on the region of collection. No differences in the neuropharmacological activity among these samples of Tilia were found. Moreover, their effects were associated with quercetin and kaempferol glycosides. Conclusions: Dissimilarities in the flavonoid composition of Mexican Tilias might imply that these species must be re-classified in more than one species, not as a unique Tilia americana var. mexicana. Since quercetin and kaempferol aglycons demonstrated anxiolytic-like response and that no difference in the pharmacological evaluation was observed between these three Mexican Tilias, we suggest that this pharmacological effect of Tilia inflorescences involves these flavonoids occurrence independently of the kind of glycosides present in the samples reinforcing their use in traditional medicine in several regions of Mexico. © 2009 Elsevier Ireland Ltd. All rights reserved.

Tortajada C.,University of the East of Mexico | Joshi Y.K.,National University of Singapore
Water Resources Management | Year: 2013

Water demand management requires the implementation of instruments and strategies that consider pricing, mandatory water conservation requirements and the engagement of the public and private sectors as well as of the society at large. In the case of Singapore, water is treated as an economic good. It is priced to recover the full costs of production and to reflect the scarcity of the resource and the high cost of developing additional water sources. Within a framework for water conservation, public education, information and awareness instruments have played a very important part in making the public appreciate the importance of conserving the resource. This paper analyses the water demand strategies that have been developed in the city-state, with emphasis on education efforts and on the results obtained in terms of water conservation. Lessons learnt from this study can provide very useful experiences for cities in developed and developing countries on the type of policies that could be successful in reducing consumption as well as in providing alternative supplies of water for both the domestic and the industrial sectors They also provide useful insights on the different ways to make the public realise the importance of using water sustainably for its long-term conservation even when immediate access to clean water may not be an issue. © 2013 Springer Science+Business Media Dordrecht.

Ramirez-Montes P.I.,CINVESTAV | Ochoa M.E.,CINVESTAV | Santillan R.,CINVESTAV | Ramirez D.J.,University of the East of Mexico | Farfan N.,University of the Basque Country
Crystal Growth and Design | Year: 2014

The synthesis and crystal structure of three new molecular rotors derived from levonorgestrel and norethisterone are reported. The conformation, close contacts, and shape characteristics of these molecules exhibiting Z′ = 2 and the inclusion of solvent molecules were analyzed together with the crystal structures of parent molecules retrieved from the Cambridge Structural Database. For the set of estranes studied, we confirmed that whenever an alternative conformer cannot satisfy the crystallographic symmetry, a second molecule is incorporated in the asymmetric unit resulting in conformational isomorphism (Z′ > 1). The shape of these molecules could make them interesting as potential hosts. © 2014 American Chemical Society.

Cruz-Castillo J.G.,University of the East of Mexico | Woolley D.J.,Massey University | Famiani F.,University of Perugia
Scientia Horticulturae | Year: 2010

A partial defoliation study was carried out on 'Hayward' kiwifruit vines with the aim of evaluating effects on fruit yield, changes in concentration of carbohydrates, and return bloom. At full bloom, 'Hayward' kiwifruit vines trained to the pergola system were submitted to 0% (control), 50% and 75% defoliation in the 2.0. m wide central horizontal area of the canopy. This area represents the vine 'replacement cane zone' (RCZ), whereas the remaining external area represents the 'fruiting zone' (FZ). Removing 50% of the leaves resulted in a small (-9. g in the RCZ and -3.3. g in the FZ), but significant, reduction in fruit weight compared to the control vines. More severe defoliation (75%) reduced fruit weight by 13. g in the RCZ and 7. g in the FZ. The defoliation treatment reduced the concentrations of starch and total soluble carbohydrates (glucose. +. fructose. +. sucrose) in the shoots and starch in trunk bark compared to those in control vines. The treatments caused a large reduction in return bloom, expressed as number of flowers per winter bud, by about 25% and 53% in vines with 50% and 75% defoliation, respectively. © 2010 Elsevier B.V.

Valle-Mendiola A.,University of the East of Mexico | Weiss-Steider B.,University of the East of Mexico | Rocha-Zavaleta L.,National Autonomous University of Mexico | Soto-Cruz I.,University of the East of Mexico
Cancer Investigation | Year: 2014

The IL-2R signaling is critical for normal lymphocyte proliferation. However, the role of the IL-2 signaling in cervical cancer is not yet fully understood. We show that in IL-2R-expressing cervical cancer cells, JAK1 molecules are not phosphorylated. At low doses of IL-2, the constitutive phosphorylation of JAK3 and STAT5 increases in the tumor cells and decreases in lymphocytes, whereas the opposite occurs at high doses of IL-2. Using AG-490, the activation of JAK3 and the proliferation of cervical cancer cells were inhibited. We describe differences in the response of molecules downstream the IL-2R in lymphocytes and tumor cells. Copyright © 2014 Informa Healthcare USA, Inc.

Feria-Ortiz M.,University of the East of Mexico | Manrquez-Morn N.L.,University of Central Mexico | De Oca A.N.-M.,National University of Costa Rica
Herpetological Monographs | Year: 2011

The Mexican Plestiodon brevirostris species group (Squamata: Scincidae) is composed of seven nominal species. The wide-ranging P. brevirostris is a polytypic species composed of five subspecies: P. b. brevirostris, P. b. bilineatus, P. b. dicei, P. b. indubitus, and P. b. pineus. A tree-based approach for species delimitation with mtDNA data was used to test the traditional species-level taxonomy of P. brevirostris preliminarily. A haplotype phylogeny for all of the species and subspecies in the P. brevirostris group, except P. colimensis, was inferred. The mtDNA data consisted of sequences encompassing the genes encoding 16S rRNA (part), ND1, and associated tRNAs (1355 base pairs), which were analyzed with Bayesian methods. Then, a search for diagnostic morphological characters for the putative species delimited by this approach was performed. The results indicate that the P. brevirostris group is paraphyletic with respect to P. lynxe, and that P. brevirostris actually is composed of at least five distinct lineages disguised by traditional taxonomy: P. b. brevirostris, P. b. bilineatus, P. b. dicei, and the eastern populations of P. b indubitus (from Morelos, Guerrero, and México) represent distinct species, whereas the western populations of P. b. indubitus (from Colima and Jalisco) represent an undescribed species. The data cannot resolve whether P. b. pineus is conspecific with P. b. dicei or P. b. dicei is a paraphyletic (?=?nonexclusive) species relative to an exclusive P. b. pineus. Thus, the status of P. b. pineus remains uncertain. The haplotype phylogeny also suggests that P. b. brevirostris may represent more than one species. © 2011 The Herpetologists' League, Inc.

Jimenez M.,University of Veracruz | Flores-Andrade E.,University of the East of Mexico | Pascual-Pineda L.A.,University of Veracruz | Beristain C.I.,University of Veracruz
LWT - Food Science and Technology | Year: 2015

Lactobacillus paracasei subsp. paracasei LBC81 microorganisms were encapsulated by fluidized bed drying using water-alginate system incorporating potato starch. The capsules were stored for seven weeks in aw (s) from 0.103 to 0.846 at 25, 35 and 45°C. The quantitative analysis of microorganisms indicated that the survival of the strain decreased more rapidly over water activity of 0.536, which was considered as critical for maintaining these alive. This water activity can be obtained using the Rockland analysis. The enthalpy-entropy compensation revealed that encapsulated probiotics were kept alive when the adsorption process was controlled by entropy, which was where the critical water activity occurred. •Viability of encapsulated probiotics decreases above water activity of 0.536.•Thermodynamic compensation provides the critical water activity for the bacterial survival.•The best bacterial stability was entropy driven. © 2014 Elsevier Ltd.

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