http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Rosa Martha Perez Gutierrez,Yolanda Gomez y Gomez,Esther Bautista Ramirez 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.4
In Mexican traditional medicine the orchid Prosthechea michuacana is highly valued as a food and in the treatment of various human diseases, including drug-related renal disease. Methanol, hexane, and chloroform extracts of bulbs of P. michuacana were studied in the cisplatin-induced renal injury model in rats. Results showed that treatment with cisplatin induced significant elevations in concentrations of blood urea and serum creatinine and in lipid peroxidation. Treatments with methanolic extract (200, 400 and 500mg/kg) increased levels of biochemical markers of renal injury like reduced glutathione, glutathione S-transferase, and superoxide dismutase and inhibited the increases in blood urea and serum creatinine concentrations and lipid peroxidation induced by cisplatin. Hexane and chloroform extracts did not show any effect. The results obtained in the present study indicate that this orchid can be a potential source of natural nephroprotective activity.
Lycopene Improves Diet-Mediated Recuperation in Rat Model of Nonalcoholic Fatty Liver Disease
Rosa Maria Pina-Zentella,Jorge L. Rosado,Marco A. Gallegos-Corona,Luis Alberto Madrigal-Perez,Olga P. Garcia,Minerva Ramos-Gomez 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.6
The aim of the present study was to evaluate the synergic effect of lycopene (LYC) treatment with a dietary control in a nonalcoholic fatty liver disease (NAFLD) model induced with a high-fat diet (HFD). Sprague–Dawley rats were fed during 4 weeks with a normal diet (ND·4w) or an HFD (HFD·4w) to produce an NAFLD model. Then, rats from the ND·4w group continued during 4 weeks with the same diet (ND·8w), and rats from HFD were fed during 4 weeks with an ND (HFD·4w+ND·4w) or an ND plus LYC (HFD·4w+ND+LYC·4w). LYC (20 mg/kg) was administered daily by gavage. ND and ND+LYC diets partially reverted the following alterations due to HFD: liver weight, serum low-density lipoproteins (LDL), hepatic total cholesterol (TC), and catalytic activity of hepatic superoxide dismutase, catalase, and glutathione peroxidase, as well as macroscopic and microscopic images of livers. A higher recuperation to reach normality was obtained with ND+LYC in: liver weight, hepatic TC, serum LDL, and, in some instances, macroscopic and microscopic images of livers. Failures to recovery with both NDs were observed for malondialdehyde level and serum aspartate aminotransferase activity. Taken together, the results from this study suggest the potentially protective role of LYC against NAFLD; however, more clinical trials are needed to support this idea.
Sources, Characteristics, and Therapeutic Applications of Mesenchymal Cells in Tissue Engineering
Gonzalez-Vilchis Rosa Angelica,Piedra-Ramirez Angelica,Patiño-Morales Carlos Cesar,Sanchez-Gomez Concepcion,Beltran-Vargas Nohra E. 한국조직공학과 재생의학회 2022 조직공학과 재생의학 Vol.19 No.2
Tissue engineering (TE) is a therapeutic option within regenerative medicine that allows to mimic the original cell environment and functional organization of the cell types necessary for the recovery or regeneration of damaged tissue using cell sources, scaffolds, and bioreactors. Among the cell sources, the utilization of mesenchymal cells (MSCs) has gained great interest because these multipotent cells are capable of differentiating into diverse tissues, in addition to their self-renewal capacity to maintain their cell population, thus representing a therapeutic alternative for those diseases that can only be controlled with palliative treatments. This review aimed to summarize the state of the art of the main sources of MSCs as well as particular characteristics of each subtype and applications of MSCs in TE in seven different areas (neural, osseous, epithelial, cartilage, osteochondral, muscle, and cardiac) with a systemic revision of advances made in the last 10 years. It was observed that bone marrow-derived MSCs are the principal type of MSCs used in TE, and the most commonly employed techniques for MSCs characterization are immunodetection techniques. Moreover, the utilization of natural biomaterials is higher (41.96%) than that of synthetic biomaterials (18.75%) for the construction of the scaffolds in which cells are seeded. Further, this review shows alternatives of MSCs derived from other tissues and diverse strategies that can improve this area of regenerative medicine.
Effect of laser shock peening and cold expansion on fatigue performance of open hole samples
Carlos Rubio-Gonzalez,G. Gomez-Rosas,R. Ruiz,M. Nait,A. Amrouche 국제구조공학회 2015 Structural Engineering and Mechanics, An Int'l Jou Vol.53 No.5
Mechanical fastening is still one of the main methods used for joining components. Different techniques have been applied to reduce the effect of stress concentration of notches like fastener holes. Inthis work we evaluate the feasibility of combining laser shock peening (LSP) and cold expansion to improve fatigue crack initiation and propagation of open hole specimens made of 6061-T6 aluminum alloy. LSP is a new and competitive technique for strengthening metals, and like cold expansion, induces a compressive residual stress field that improves fatigue, wear and corrosion resistance. For LSP treatment, a Q-switched Nd:YAG laser with infrared radiation was used. Residual stress distribution as a function of depth was determined by the contour method. Compact tension specimens with a hole at the notch tip were subjected to LSP process and cold expansion and then tested under cyclic loading with R=0.1 generating fatigue cracks on the hole surface. Fatigue crack initiation and growth is analyzed and associated with the residual stress distribution generated by both treatments. It is observed that both methods are complementary; cold expansion increases fatigue crack initiation life, while LSP reduces fatigue crack growth rate.
Research and development on heat pump systems in Mexico using geothermal energy
Alfonso Garcia-Gutierrez,Rosa M. Barragan-Reyes,Victor M. Arellano-Gomez 한국물리학회 2010 Current Applied Physics Vol.10 No.2
Extensive research and development work on heat pumps operating on geothermal and waste energy has been carried out by Instituto de Investigaciones Electricas, Mexico. Systems include (i) mechanical compression;(ⅱ) absorption – one- and two-stage and double absorption; (ⅲ) heat transformers, and (ⅳ)hybrid, heat pump systems. Specific work and results are described on three applications: (a) a mechanical compression heat pump commissioned for brine purification and operating on low-pressure geothermal steam in Los Azufres geothermal field; (b) a cooling and refrigeration ammonia/water absorption heat pump operating on low-enthalpy geothermal energy and tested in Los Azufres and Cerro Prieto geothermal fields, and (c) an absorption heat transformer tested extensively to evaluate the performance of ternary solutions as working fluids.
Effect of laser shock peening and cold expansion on fatigue performance of open hole samples
Rubio-Gonzalez, Carlos,Gomez-Rosas, G.,Ruiz, R.,Nait, M.,Amrouche, A. Techno-Press 2015 Structural Engineering and Mechanics, An Int'l Jou Vol.53 No.5
Mechanical fastening is still one of the main methods used for joining components. Different techniques have been applied to reduce the effect of stress concentration of notches like fastener holes. In this work we evaluate the feasibility of combining laser shock peening (LSP) and cold expansion to improve fatigue crack initiation and propagation of open hole specimens made of 6061-T6 aluminum alloy. LSP is a new and competitive technique for strengthening metals, and like cold expansion, induces a compressive residual stress field that improves fatigue, wear and corrosion resistance. For LSP treatment, a Q-switched Nd:YAG laser with infrared radiation was used. Residual stress distribution as a function of depth was determined by the contour method. Compact tension specimens with a hole at the notch tip were subjected to LSP process and cold expansion and then tested under cyclic loading with R=0.1 generating fatigue cracks on the hole surface. Fatigue crack initiation and growth is analyzed and associated with the residual stress distribution generated by both treatments. It is observed that both methods are complementary; cold expansion increases fatigue crack initiation life, while LSP reduces fatigue crack growth rate.
Acupuncture Points and Their Relationship with Multireceptive Fields of Neurons
Salvador Quiroz-Gonzalez,Sergio Torres-Castillo,Rosa Estela Lopez-Gomez,Ismael Jimenez Estrada 사단법인약침학회 2017 Journal of Acupuncture & Meridian Studies Vol.10 No.2
In Traditional Chinese Medicine, acupuncture points (APs) have been emphasized as key elements that generate the therapeutic effects of acupuncture. At the spinal cord or supraspinal level, sensory neurons located in the dorsal horn receive an extensive supply of sensory information from skin and muscle receptors through peripheral afferent nerves. The stimulated skin area that influences the activity of a spinal sensory neuron is known as the peripheral receptive field (RF) of that neuron. By considering that a particular AP location involves the activation of one or various RFs, it can be assumed that several sensory central neurons are the site of convergence of the peripheral input generated by acupuncture stimulation. However, stimulation on nonacupoint sites could also activate skin areas with RFs that have been sensitized, and they could be involved in the generation of nonspecific effects of acupuncture, as seen in clinical practice. From the latter, it is suggested that effective APs, and even nonacupoints, are associated with a particular arrangement of RFs, and their study will be useful for understanding the intrinsic mechanisms of acupuncture and for the development and identification of more efficient sites and modes of acupuncture stimulation to evoke optimal therapeutic actions.
Heart Rate Variability and Psychometric Analysis in Patients with Hyperactive Heart Fire Syndrome
Oliverio Medina Martínez,Ruben Fossion,Yolanda García Piceno,Rosa E. Lopez-Gomez,Emma López-Espinosa,Ismael Jiménez-Estrada,Salvador Quiroz-González 사단법인약침학회 2021 Journal of Acupuncture & Meridian Studies Vol.14 No.4
Background: Hyperactive heart fire syndrome is characterized by anxiety, insomnia, dream-disturbed sleep, tongue ulcers, heat in the hands, and palpitations. However, syndrome differentiation is often subjective due to a lack of objective, quantifiable variables. Objectives: To identify changes in heart rate variability (HRV) and psychometric analysis in patients with hyperactive heart fire syndrome. Methods: Healthy controls (n = 33) were compared to patients with hyperactive heart fire syndrome (n = 48) from the Integrative University Clinic of the State University of Ecatepec Valley (CIU-UNEVE). Physiological outcome measures included heart rate (HR), the standard deviation of the normal-to-normal heartbeat intervals (SDNN), low (LF) and high frequency (HF) power, and the LF/HF ratio. Psychometric outcome measures included the Athens Insomnia Scale (AIS) and the Hamilton Anxiety Rating Scale (HARS). Results: Compared to controls, hyperactive heart fire patients had higher HR (9.6 ± 2.62%), LF (22 ± 4.21%) and LF/HF ratio (23 ± 3.14%), and lower SDNN (21 ± 2.33%) and HF (18 ± 4.61%). Patients showed increased anxiety, both with somatic (33 ± 11.2%) and psychic symptoms (39 ± 10.5%) with more difficulty falling asleep (47 ± 9.9%) and diurnal impact of sleep (31 ± 9.6%). Conclusion: Hyperactive heart fire patients may have a sympathovagal imbalance due to a reduced parasympathetic tone and/or adominant sympathetic tone, which may be at the origin of the observed symptoms of insomnia and anxiety.