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Bustamante, Danilo Edson,Won, Boo Yeon,Cho, Tae Oh Walter de Gruyter GmbH 2015 Botanica marina Vol.58 No.5
<B>Abstract</B><P>a well-known western Atlantic species, is here reported for the first time from Indonesia and this extends its distribution into Southeast Asia.</P>
Neosiphonia ramirezii sp. nov. (Rhodomelaceae, Rhodophyta) from Peru
Bustamante, Danilo Edson,Won, Boo Yeon,Cho, Tae Oh The Korean Society of Phycology 2013 ALGAE Vol.28 No.1
The genus Neosiphonia Kim and Lee 1999 contains approximately 30 species worldwide. Unidentified samples from Peru are here described as a new species, Neosiphonia ramirezii sp. nov., on the basis of morphological and molecular data. N. ramirezii sp. nov. is characterized by the presence of a limited prostrate system, well-developed erect filaments, rhizoids cut off from pericentral cells by cross walls, four pericentral cells that are completely ecorticate, scarce trichoblasts, inconspicuous scar cells, procarps with three-celled carpogonial branches, spermatangial branches developed from basal cells of forked trichoblasts, and spirally arranged tetrasporangia. Our new species is distinct from N. flaccidissima (Hollenberg) Kim et Lee, N. sphaerocarpa (Borgesen) Kim et Lee, and N. savatieri (Hariot) Kim et Lee from the Pacific temperate coast of South America and from 14 Neosiphonia species reported worldwide by having limited prostrate filaments attached by numerous rhizoids, dichotomous ("Y" shaped) branches in the main axes, and scarce trichoblasts. Phylogenetic rbcL analyses confirm the placement of the new taxon as a distinct species in the genus Neosiphonia.
Bustamante, Danilo Edson,Won, Boo Yeon,Cho, Tae Oh The Korean Society of Phycology 2014 ALGAE Vol.29 No.2
Polysiphonia sensu stricto is characterized by having 4 ecorticate pericentral cells, rhizoids in open connection with the pericentral cells, four-celled carpogonial branches, spermatangial branches replacing the whole trichoblast, and tetrasporangia arranged in straight series. Polysiphonia ulleungensis sp. nov. is newly described from Sadongri, Ulleung Island, Korea, based on morphological and molecular evidence. It is mainly characterized by having ecorticate axes with 4 pericentral cells, apical cells transversely or obliquely divided, unicellular rhizoids in open connection with pericentral cells, very scarce trichoblasts and scar cells, procarps with a four-celled carpogonial branch, and spermatangial branches replacing the whole trichoblast. Polysiphonia ulleungensis is closely similar in morphology to P. atlantica sensu lato. We concluded that materials of P. atlantica sensu Nam and Kang from Korea correspond to P. ulleungensis. By contrast, the new species differs morphologically from the Atlantic specimens of P. atlantica as well as from P. atlantica sensu Kim and Lee from Korea. Morphological characteristics and rbcL sequence analyses support the taxonomic placement of P. ulleungensis within Polysiphonia sensu stricto.
Fertilizing capacity of cryopreserved sperm of Chirostoma jordani (Woolman, 1894)
Bustamante-González Jesús Dámaso,Gutiérrez-Díaz Dulce Leticia,Baca-Alejo Judith Sarai,Figueroa-Lucero Gerardo,Arenas-Ríos Edith,Hernández-Rubio María Cecilia,Ávalos-Rodríguez Alejandro 한국수산과학회 2024 Fisheries and Aquatic Sciences Vol.27 No.5
The genus Chirostoma is endemic from the Mesa Central of Mexico. It is conformed of 18 species and six subspecies. Five species are in some category of risk, because of this, Chirostoma jordani is an excellent model species to implement biotechnologies like gametes cryopreservation. Aim of present study was to evaluate fertilizing capacity of cryopreserved C. jordani sperm, as alternative to conservation and assisted reproduction in this specie and genus. Males and females were collected from wild Atlangatepec dam stock, Tlaxcala State, Mexico. Seminal quality was evaluated in fresh and cryopreserved semen with three cryoprotective agents (CPAs): 10% dimethyl sulfoxide (DMSO), 10% methanol (MeOH), 14% ethylene glycol (EG) and it was determined its post-thaw fertilizing capacity. Sperm motility percentage decreased during cryopreservation process (p < 0.05). There were not significant differences in post-thaw motility percentage between EG (53.5 ± 1.9%) and MeOH (53.3 ± 1.3%), but DMSO (50.3 ± 0.5%) was significantly different (p < 0.05). Results showed that 0.2 μL fresh semen were enough to fertilize 100% oocytes (n = 60). 10 μL DMSO and 5 μL MeOH and EG cryopreserved semen were necessary to fertilize oocytes 100% (n = 60) (p < 0.05). Cryopreservation and fertilization protocol for C. jordani sperm was efficient and it could be used for its assisted reproduction.
Bustamante, Danilo E.,Won, Boo Yeon,Cho, Tae Oh The Korean Society of Phycology 2016 ALGAE Vol.31 No.2
The genus Pterosiphonia includes twenty-one currently described species of red algae that occur in temperate to tropical regions of the Atlantic and Pacific Oceans. Pterosiphonia spinifera was originally described as Polysiphonia spinifera from Peru and later transferred to Pterosiphonia. Pterosiphonia spinifera has been reported from Peru as Pterosiphonia pennata, which was originally described from the Mediterranean Sea. Recently, Pterosiphonia arenosa was described based on specimens of P. pennata from Korea. We collected P. spinifera along the coast of Peru and P. arenosa near the type locality in Korea. We compared them with the isotype specimens of P. arenosa using both morphological and molecular data. Our morphological observations and our phylogenetic analysis of rbcL sequences demonstrate that P. spinifera and P. arenosa are conspecific and indicate that P. arenosa is a later synonym of P. spinifera. Our study confirms the wide occurrence of P. spinifera in the western and eastern Pacific Ocean.
Moises Bustamante-Pozo,Israel Ramirez-Sanchez,Alejandra Garate-Carrillo,Bruce Ito,Viridiana Navarrete,Moises Haro,Ricardo Garcia,Nancy Carson,Guillermo Ceballos,Francisco Villarreal 한국식품영양과학회 2022 Journal of medicinal food Vol.25 No.8
One of the most abundant flavonoids present in cacao is (−)-epicatechin (Epi) and this flavanol has been linked to the cardiovascular health promoting actions of cocoa products. We previously demonstrated that Epi reduces infarct size in rodent models of ischemia/reperfusion and permanent coronary occlusion. Reduced infarct size was associated with decreased left ventricular (LV) oxidative stress (OS) and indicators of inflammation factors, which foster myocardial fibrosis. In this study, we examine the antifibrotic actions of Epi in an aging female rat model of pre-heart failure with preserved ejection fraction (pre-HFpEF) as well as its potential to mitigate plasma levels of OS, proinflammatory/profibrotic cytokines, and improve passive and active LV function. Epi treatment [1 mg/(kg·d)] was provided daily by gavage from 21 to 22 months of age, whereas controls received water. A Millar catheter was used to assess hemodynamic function. Subsequently, hearts were arrested in diastole, a balloon inserted into the LV and passive pressure–volume curves generated. Fixed LV sections were processed for collagen area fraction quantification using Sirius Red staining. Treatment with Epi did not lead to detectable changes in LV contractile function. However, passive LV pressure volume curves were significantly right shifted with Epi. Collagen area fraction values indicated that Epi treatment significantly reduces LV fibrosis. Epi also significantly reduced plasma OS markers and levels of profibrotic and proinflammatory cytokines. In conclusion, Epi reduces cardiac fibrosis in an aged, female rat model of pre-HFpEF, which correlates with significant reductions in OS and cytokine levels in the absence of changes in LV contractile function.
Leslie Bustamante,N. Jeyaprakash,Che-Hua Yang 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.21 No.10
In the fi eld of aerospace materials and structures, water coupled ultrasonic testing was not desirable due to changes in properties and contamination reason. Therefore, in the present study non-contact air coupled ultrasonic transducers were proposed as an alternative examination for such applications. This present study describes our practical knowledge of using piezoelectric air-coupled transducers for visualization and defect identification of aluminium, CFRP and epoxy-resin specimens. Further, the effectiveness of the system is verified by experiments conducted in the inspection of artificial defects and 2D images was reconstructed through scanning of specific specimen surface. Results show that, all the created defects were identified successfully using C-scan technique. The measured defect values were compared with experimental defect values and shows good agreement. The 1 MHz piezoelectric transducer was the best for all the three specimens which is used in the present study because of the material structure being evaluated. The bulk wave piezoelectric transducer was identified as extensive pulse attenuation by the structure of the aluminium, CFRP and epoxy resin.