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Gonzalez-Cabrera Jaime,Moreno-Carrillo Gabriel,Lopez-Juarez Alejandro A.,Anguiano-Amezcua Juan A.,Sanchez-Gonzalez Jorge A.,Mendoza-Ceballos Mario Y.,Arredondo-Bernal Hugo C. 한국응용곤충학회 2023 Journal of Asia-Pacific Entomology Vol.26 No.2
Two colonies of the parasitoid Trichopria drosophilae (Perkins) (Hymenoptera: Diapriidae) are reproduced using a mass rearing approach in Mexico. The first colony uses the worldwide commercial host Drosophila melanogaster Meigen (Diptera: Drosophilidae) reared on an artificial diet (=T. drosophilae-Dm), while the second colony uses D. suzukii Matsumura reared on fresh banana (=T. drosophilae-Ds). Since theoretically the type of colony host affects parasitoid field performance, we conducted concatenated laboratory and field studies of both parasitoid lines. In the laboratory trials, T. drosophilae-Ds exhibited greater longevity, larger adult size, and higher fecundity than T. drosophilae-Dm. Both lines of parasitoids oviposited indistinctly in three drosophilid species commonly found in the berry zones of Colima: D. melanogaster, D. suzukii, and Zaprionus indianus Gupta. In the field trials, T. drosophilae-Ds had a larger population size and provided 2.4-fold higher pest reduction compared to T. drosophilae-Dm. Under the particular conditions of these field trials (berry fields separate from each other ≤ 3 km, and intensive agronomic management), these results demonstrate that T. drosophilae-Ds can significantly contribute more to the integrated management of D. suzukii than when reared on the commercial host D. melanogaster.
A New Formulated Stable Papin-pectin Aerosol Spray for Skin Wound Healing
Karla Monzerratt Gregorio Jáuregui,Juan Carlos Cano Cabrera,Elda Patricia Segura Ceniceros,Jose Luis Martínez Hernández,Anna Ilyina 한국생물공학회 2009 Biotechnology and Bioprocess Engineering Vol.14 No.4
A new spray-on topical wound debrider composition consisting of 0.1% w/v papain immobilized in 6% w/v pectin gel was formulated for skin wound healing. The stability of the enzyme activity of this new formulated spray was compared with the 0.1% w/v papain in water solution at the refrigerated temperature of 4 and 75°C. Two aerosol propellants, air and nitrogen, were evaluated for their efficacy. The new formulated spray was then evaluated for its thermal stability under air and N2 at 75°C. All enzyme activity of papain was measured with a spectrophotometer using casein as a substrate at 37°C and in 0.1 M phosphate buffer at pH 6, as well as trichloral acetic acid to separate the product of casein hydrolysis. All the evaluations showed the new aerosol spray formulation to be far better than the liquid formulation in storage stability and thermal stability at 75°C under atmospheric or higher pressures. The new formulation was tested in a rabbit experiment to evaluate the effectiveness of wound healing. As compared to untreated wound, the formulated spray clearly was superior, yielding a 20% more healing progress in the first 4 days alone.
Luis Alberto Ortega-Porcayo,Eibar Ernesto Cabrera-Aldana,Nicasio Arriada-Mendicoa,Juan Luis Gómez-Amador,Martín Granados-García,Juan Barges-Coll 대한척추외과학회 2014 Asian Spine Journal Vol.8 No.6
Anterior exposure for cervical chordomas remains challenging because of the anatomical complexities and the restoration of the dimensional balance of the atlanto-axial region. In this report, we describe and analyze the transmandibular transoral approach and multilevel spinal reconstruction for upper cervical chordomas. We report two cases of cervical chordomas (C2 and C2–C4) that were treated by marginal en bloc resection with a transmandibular approach and anterior-posterior multilevel spinal reconstruction/fixation. Both patients showed clinical improvement. Postoperative imaging was negative for any residual tumor and revealed adequate reconstruction and stabilization. Marginal resection requires more extensive exposure to allow the surgeon access to the entire pathology, as an inadequate tumor margin is the main factor that negatively affects the prognosis. Anterior and posterior reconstruction provides a rigid reconstruction that protects the medulla and decreases axial pain by properly stabilizing the cervical spine.
Edith E. Lopéz-Martínez,Jesús A. Claudio-Rizo,Martín Caldera-Villalobos,Juan J. Becerra-Rodríguez,Denis A. Cabrera-Munguía,Lucía F. Cano-Salazar,Rebeca Betancourt-Galindo 한국고분자학회 2022 Macromolecular Research Vol.30 No.6
Determining the controlled release capacity of drugs with therapeutic interest as well as the biocompatibility of hydrogels based on natural and synthetic polymers is of the utmost importance to evaluate their potential performance in regenerative medicine strategies. Novel hydrogels were synthesized by semi-interpenetration of guar gum (GG) in a matrix of crosslinked collagen with hydrophilic polyurethane. GG concentrations of 10, 20, 30 and 40 wt% on the semi-IPN matrices were tested. These hydrogels have excellent in vitro biocompatibility, not demonstrating cytotoxic character for cells important in the healing process such as monocytes and fibroblasts, stimulating their proliferation, as well as evidencing hemocompatibility and antibacterial capacity. Also these matrices can encapsulate and release methylene blue in a controlled manner. The results of the evaluation of human monocyte signaling indicate that the semi-IPN matrix containing 30 wt% of GG allows higher segregation of beta-1 transforming growth factor (β1-TGF), a determinant cytokine in the construction of new tissue, showing that these hydrogels have potential application in biomedicine as dressings for chronic wound healing.
Edith E. Lopéz-Martínez,Jesús A. Claudio-Rizo,Martín Caldera-Villalobos,Juan J. Becerra-Rodríguez,Denis A. Cabrera-Munguía,Lucía F. Cano-Salazar,Rebeca Betancourt-Galindo 한국고분자학회 2022 Macromolecular Research Vol.30 No.6
Novel synthetic strategies to produce biopolymer based hydrogels for biomedical applications are required currently. Collagen hydrogels for wound healing can improve their structural and physicochemical properties by incorporating polysaccharides within the fibrillar matrix. Novel hydrogels were synthesized by semi-interpenetration of guar gum (GG) in a matrix of crosslinked collagen with hydrophilic polyurethane. GG concentrations of 10, 20, 30, and 40 wt% on the semi- IPN matrices were tested. The addition of the polysaccharide accelerates the gelling time of the hydrogels; 30 wt% of GG allows a 68 ± 5% of physicochemical crosslinking, exhibiting a maximum swelling of 3496 ± 89% and both improved mechanical and thermal resistance. The short-range interactions established in these matrices, mainly of the hydrogen bond type, make it possible to delay their hydrolytic and proteolytic degradation. The structure and properties of these hydrogels could have potential application in biomedicine as dressings for chronic wound healing, tailoring the controlled release of drugs with therapeutic interest, cell viability and proliferation, cell signaling, hemocompatibility and antibacterial character.
( Natividad Perez-villalobos ),( Inaki Espinosa-crespo ),( Jose Sampayo-cabrera ),( Juan-vicente Gonzalez-martin ),( Antonio Gonzalez-bulnes ),( Susana Astiz ) 한국동물자원과학회(구 한국축산학회) 2017 한국축산학회지 Vol.59 No.3
Background: Bovine respiratory disease (BRD) is one of the leading causes of economic losses in the beef and dairy industry. Reliable antemortem tools for diagnosing BRD would improve the efficacy of treatment and reduce costs. Here we examined whether the relatively simple technique of thoracoscopy can support BRD diagnosis under field conditions. We also compared various equipment set-ups in order to optimize the safety and efficacy of the procedure. A total of 24 thoracoscopic procedures were performed in 17 calves diagnosed with BRD and in 2 healthy control calves. Rigid and flexible endoscopes and industrial videoscopes were tested using various insertion approaches. The suitability of the technique was assessed in terms of duration, volume of air extracted, visualization score, and image quality. Safety was assessed in terms of rectal temperature, body weight, breaths/min, presence of fibrinogen, pain score, recovery time, intraoperative complications and risk of laceration or threatening collapse. Results: Insertion of a flexible endoscope via a right, dorso-caudal approach at the 5<sup>th</sup> intercostal space allowed complete examination of the right lung in 15 min, as well as identification of main lung lesions and adherences in calves with BRD, without compromising calf welfare. While the dorso-caudal approach was optimal, it was associated with substantial discomfort when rigid endoscopes were used, minimal complications or mortality due to thoracoscopy were observed up to 28 days after the procedure. Videoscopes were as safe and easy to use as endoscopes, but endoscopes provided better image quality. Conclusion: This study provides the first field evidence that thoracoscopy can be safe to explore BRD-diseased calves. These results justify a larger study to rigorously assess the diagnostic performance of the technique.
Long-term Plan to Monitor Venus Using Earth-orbiting CubeSats
Yeon Joo Lee(이연주),Antonio Garcıa Munoz,Young-Jun Choi(최영준),Harald Michaelis,Emmanuel Marcq,Daphne Stam,Masateru Ishiguro,Bongkon Moon(문봉곤),Heike Rauer,Thomas Granzer,Juan Cabrera,Sebastien Lebonnois,T 한국항공우주학회 2023 한국항공우주학회 학술발표회 논문집 Vol.2023 No.6