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dela Pena, Irene Joy I.,Kim, Hee Jin,Botanas, Chrislean Jun,de la Pena, June Bryan,Van Le, Thi Hong,Nguyen, Minh Duc,Park, Jeong Hill,Cheong, Jae Hoon The Korean Society of Ginseng 2017 Journal of Ginseng Research Vol.41 No.2
Background: Panax vietnamensis Ha et Grushv. or Vietnamese ginseng (VG) is a recently discovered ginseng species. Studies on its chemical constituents have shown that VG is remarkably rich in ginseng saponins, particularly ocotillol saponins. However, the psychopharmacological effects of VG have not been characterized. Thus, in the present study we screened the psychopharmacological activities of VG in mice. Methods: VG extract (VGE) was orally administered to mice at various dosages to evaluate its psychomotor (open-field and rota-rod tests), sedative-hypnotic (pentobarbital-induced sleeping test), anti-stress (cold swimming test), anxiolytic (elevated plus-maze test), and cognitive (Y-maze and passive-avoidance tests) effects. Results: VGE treatment increased the spontaneous locomotor activity, enhanced the endurance to stress, reduced the anxiety-like behavior, and ameliorated the scopolamine-induced memory impairments in mice. In addition, VGE treatment did not alter the motor balance and coordination of mice and did not potentiate pentobarbital-induced sleep, indicating that VGE has no sedative-hypnotic effects. The effects of VGE were comparable to those of the Korean Red Ginseng extract. Conclusion: VG, like other ginseng products, has significant and potentially useful psychopharmacological effects. This includes, but is not limited to, psychomotor stimulation, anxiolytic, antistress, and memory enhancing effects.
Pena, Ike Dela,Yoon, Seo Young,Kim, Hee Jin,Park, Sejin,Hong, Eun Young,Ryu, Jong Hoon,Park, Il Ho,Cheong, Jae Hoon The Korean Society of Ginseng 2014 Journal of Ginseng Research Vol.38 No.1
Background: Although ginsenosides such as Rg1, Rb1 and Rg3 have shown promise as potential nutraceuticals for cognitive impairment, their use has been limited due to high production cost and low potency. In particular, the process of extracting pure Rg3 from ginseng is laborious and expensive. Methods: We described the methods in preparing ginseol k-g3, an Rg3-enriched fraction, and evaluated its effects on scopolamine-induced memory impairment in mice. Results: Ginseol k-g3 (25-200 mg/kg) significantly reversed scopolamine-induced cognitive impairment in the passive avoidance, but not in Y-maze testing. Ginseol k-g3 (50 and 200 mg/kg) improved escape latency in training trials and increased swimming times within the target zone of the Morris water maze. The effect of ginseol k-g3 on the water maze task was more potent than that of Rg3 or Red ginseng. Acute or subchronic (6 d) treatment of ginseol k-g3 did not alter normal locomotor activity of mice in an open field. Ginseol k-g3 did not inhibit acetylcholinesterase activity, unlike donezepil, an acetylcholinesterase inhibitor. Rg3 enrichment through the ginseol k-g3 fraction enhanced the efficacy of Rg3 in scopolamine-induced memory impairment in mice as demonstrated in the Morris water maze task. Conclusion: The effects of ginseol k-g3 in ameliorating scopolamine-induced memory impairment in the passive avoidance and Morris water maze tests indicate its specific influence on reference or long-term memory. The mechanism underlying the reversal of scopolamine-induced amnesia by ginseol k-g3 is not yet known, but is not related to anticholinesterase-like activity.
Antonio Pena-Garcia,Francisco Pérez-Ocón,José Ramón Jiménez 한국광학회 2011 Current Optics and Photonics Vol.15 No.2
After the successful extension of the rotating planar waveguide model to Wave Optics, where a clear identification between the angular velocity of one hypothetical waveguide and the phase differences between two points on the path of one bounded mode was found, an application of the model to explain the interference theory is presented. We demonstrate that, for two bounded modes to create an interference pattern, a constrain to the relative parameters among both is imposed by the fiber optics. This result, not reported in the literature up to date, provides a new horizon to understand the interaction light-light when propagated within optical fibers.
( Milagros Pena ) 부경대학교 글로벌지역학연구소 2019 Journal of Global and Area Studies(JGA) Vol.3 No.1
Churches, congregations, and faith-based organizations (FBOs) are among the most visible, dynamic, and politically positioned institutions in Latinx/Hispanic communities. This paper focuses on the role that Latinx and non-Latinx churches, congregations, and FBOs play in leading civic engagement and readiness to mobilize in times of need for social action in the U.S. Analysis in this paper builds on face-to-face interviews conducted with Latinx pastors representing several cities in the U.S., observations from survey responses conducted for the Chicago Latino Congregations Study, and on newspaper accounts of recent resurgent faith-based sanctuary movement activism. The Chicago Latinx Congregations Study (CLCS)―a multi-level, comprehensive study of Latinx congregations in metropolitan Chicago includes surveys of clergy, lay leaders, and congregants completed in 2007―and provided a unique, in-depth window into Latinx Christianity embedded in a community context. The paper shows that social activism resides in the ebb and flow of particular political moments and focuses on religious organizations readiness to mobilize on behalf of immigrants beginning in local community settings.
Home Advice, Gossip, and Professional Resignation
Simon Pena-Fernandez 숙명여자대학교 아시아여성연구원 2016 Asian Women Vol.32 No.1
The cinematic image of journalism has traditionally relegated the role of women to the background. The same occurs in Billy Wilder films, whose powerful portrayal of the profession in Ace in the Hole (1951) and The Front Page (1974) was cemented in his previous career as a reporter for tabloids in Vienna and Berlin in the twenties. Among the numerous journalists that appear in the twenty-six films he wrote and directed, only one in ten are women, and they are also relegated to the stereotypical patterns of representation of the early twentieth century. But unlike many other directors who worked as journalists before entering the world of motion pictures and who subsequently contributed to the construction of the film stereotype of the profession, Wilder could boast about something that was hardly within reach of his peers, since he had impersonated a female journalist who offered advice in the Berlin tabloid Tempo. This paper analyzes the female journalist characters in the twenty-six films written and directed by Billy Wilder, among the 240 workers in the mass media who appear in those films. The results show that Wilder relied on a highly stereotyped portrait of the profession, with only three female characters with enough of their own identity to stand out as individuals, and that Wilder’s portrait ties in with a primitive view of the profession in which women are only one out of ten media workers and only suited to write gossip columns and offer home advice.