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Luis Enrique Garcia-Rios,Ana K. Garcia-Avila,Marisol Luna-Castillo,Jazmin G. De Anda-Gonzalez,Rafael Medrano-Guzman 한국간담췌외과학회 2021 Annals of hepato-biliary-pancreatic surgery Vol.25 No.4
Germ cell tumors (GCTs) are considered as extragonadal if there is no evidence of a primary tumor in the testes or ovaries. GCTs can be classified as seminomas, non-seminomatous, mature teratomas, and immature teratomas based upon histology. Mature teratomas are generally found in prepuberal children. Less than 1% of them have been reported in the gastrointestinal tract and liver. Liver teratomas are extremely rare. There are only 11 cases reported in adults up to 2018. Isolated liver metastasis of ovarian teratoma is also very rare. We present a case of a late metachronous recurrence of liver cystic teratoma with gliosis peritonei in a female adult treated by a right extended hepatectomy along with a literature review.
Intra-aneurysmatic thrombectomy in a distal anterior cerebral artery aneurysm
Juan Luis Gómez-Amador,Leoncio Alberto Tovar-Romero,Andrea Castillo-Matus,Ricardo Marian-Magaña,Jorge Fernando Aragón-Arreola,Marcos Vinicius Sangrador-Deitos,Alan Hernández-Hernández,Germán López-Val 대한뇌혈관외과학회 2023 Journal of Cerebrovascular and Endovascular Neuros Vol.25 No.4
Thrombectomy procedures following intra-aneurysmatic lesions are extremely rare, and few cases have been reported. This article describes a microsurgical intra-aneurysmatic thrombectomy (MIaT) for a distal anterior cerebral artery (DACA) aneurysm. We present the case of a 48-year-old female that was admitted to the emergency room, showing neurologic deterioration with focal deficits. A computed tomography angiography (CTA) scan revealed an aneurysm located in the distal segment of the left anterior cerebral artery. During the surgical procedure, after clipping, a wellformed clot was visualized through the aneurysm’s wall obstructing the left DACA flow. We proceeded to open the aneurysm’s dome to remove the thrombus and clip the aneurysm neck, re-establishing the flow of the left DACA.Intra-aneurysmatic thrombosis can occur as a complication during clipping, obstructing the distal flow of vital arteries and causing fatal results in the patient’s postoperative status. MIaT is a good technique for restoring the flow of the affected vessel and allows a secure aneurysm clipping after thrombus removal.
Huaccha-Castillo Annick Estefany,Fernandez-Zarate Franklin Hitler,Pérez-Delgado Luis Jhoseph,Tantalean-Osores Karla Saith,Vaca-Marquina Segundo Primitivo,Sanchez-Santillan Tito,Morales-Rojas Eli,Semin 한국산림과학회 2023 Forest Science And Technology Vol.19 No.1
Non-destructive methods that accurately estimate leaf area (LA) and leaf weight (LW) are simple and inexpensive, and represent powerful tools in the development of physiological and agronomic research. The objective of this research is to generate mathematical models for estimating the LA and LW of Cinchona officinalis leaves. A total of 220 leaves were collected from C. officinalis plants 10months after transplantation. Each leaf was measured for length, width, weight, and leaf area. Data for 80% of leaves were used to form the training set, and data for the remaining 20% were used as the validation set. The training set was used for model fit and choice, whereas the validation set al.lowed assessment of the of the model’s predictive ability. The LA and LW were modeled using seven linear regression models based on the length (L) and width (Wi) of leaves. In addition, the models were assessed based on calculation of the following statistics: goodness of fit (R2), root mean squared error (RMSE), Akaike’s information criterion (AIC), and the deviation between the regression line of the observed versus expected values and the reference line, determined by the area between these lines (ABL). For LA estimation, the model LA¼11.521(Wi) 21.422 (R2¼0.96, RMSE¼28.16, AIC¼3.48, and ABL¼140.34) was chosen, while for LW determination, LW¼0.2419(Wi) 0.4936 (R2¼0.93, RMSE¼0.56, AIC¼37.36, and ABL¼0.03) was selected. Finally, the LA and LW of C. officinalis could be estimated through linear regression involving leaf width, proving to be a simple and accurate tool.
Juan Luis Gómez-Amador,Pablo David Guerrero-Suárez,Jaime Jesús Martínez-Anda,Jorge Fernando Aragón-Arreola,Andrea Castillo-Matus,Ricardo Marian-Magaña,Marcos V Sangrador-Deitos,Alan Hernández-Hernánde 대한뇌혈관외과학회 2023 Journal of Cerebrovascular and Endovascular Neuros Vol.25 No.4
Bilateral posterior communicating (pComm) artery aneurysms represent only 2% of mirror intracranial aneurysms. Usually, these are surgically approached through bilateral craniotomies for clipping. We present the case of a 50-year-old female presenting with headache and horizontal diplopia. Neurological examination revealed a left oculomotor palsy, with no other neurological deficits. Imaging studies revealed bilateral aneurysmatic lesions in both internal carotid arteries (ICA). A conventional left pterional approach was planned in order to treat the symptomatic aneurysm, and, if deemed feasible, a contralateral clipping through the same approach. The procedure was performed in a hybrid operating room (HOR), performing an intraoperative digital subtraction angiography (DSA) and roadmapping assistance during dissection and clipping. Transoperatively, a post-fixed optic chiasm was identified, with a wide interoptic space, which allowed us to perform the contralateral clipping through a unilateral approach. This technique for clipping bilateral pComm aneurysms can be performed when the proper anatomical features are met.
Sonsire Fernández Castillo,Mario Landys Chovel,Niurka Gutiérrez Hernández,Lorena Corcho González,Amaya Blanco,Daily Serrano Hernández,Mildrey Fariñas Medina,Maydelis Álvarez Tito,José Luis Pérez Quiño 대한백신학회 2016 Clinical and Experimental Vaccine Research Vol.5 No.2
In this study, a formulation of Bordetella pertussis proteoliposome (PLBp), diphtheria, and tetanus toxoids and alum (DT-PLBp) was evaluated as a trivalent vaccine candidate in BALB/c mice. Vaccine-induced protection was estimated using the intranasal challenge for pertussis and enzyme-linked immunosorbent assay to assess serological responses for diphtheria or tetanus. Both, diphtheria-tetanus-whole cell pertussis (DTP) and diphtheria-tetanus vaccines (DT) were used as controls. Animals immunized with DT-PLBp, PLBp alone, and DTP showed total reduction of CFU in lungs 7 days after intranasal challenge. Likewise, formulations DT-PLBp, DTP, and DT elicited antibody levels ≥2 IU/mL against tetanus and diphtheria, considered protective when neutralization tests are used. Overall, results showed that combination of PLBp with tetanus and diphtheria toxoids did not affect the immunogenicity of each antigen alone.
Personal Exposure to PM2.5 in the Massive Transport System of Bogotá and Medellín, Colombia
Maria Paula Castillo-Camacho,Isabel Cristina Tunarrosa-Grisales,Lina María Chacón-Rivera,Marco Andrés Guevara Luna,Luis Carlos Belalcázar Cerón 한국대기환경학회 2020 Asian Journal of Atmospheric Environment (AJAE) Vol.14 No.3
Recent studies have shown that public transport users can be exposed to high levels of pollution emitted from their own vehicles and nearby sources. The purpose of this research is to determine the personal exposure of passengers to PM2.5 inside the vehicles of the massive public transport of two of the main and more populated cities of Colombia, Bogotá and Medellín. TM (TransMilenio powered by diesel) and SITVA (electric and gas natural vehicles) were the systems studied. Were evaluated the integration of new vehicles with technologies Euro V and Euro VI in the TM system, the impact of the weekend effect on personal exposure into public transport(TM and SITVA), and the possible differences between personal exposure regarding the ways of the systems(mixed lane or exclusive lane for TM and SITVA). To measure PM2.5 levels, a DustTrak monitor previously calibrated was used. This measurement campaigns lasted for more than 80 hours and a mean of 17000 data of PM2.5 concentrations were obtained for each route. The personal dose was calculated based on the recorded data. The mean PM2.5 concentrations and personal dose found in the research for TM are 167 µg/m³ and 2.3 µg/min, respectively, while, for SITVA they are 41 µg/m³ and 0.53 µg/min, respectively. Therefore, SITVA users have a 5 times lower personal exposure to PM2.5 than TM users. It was also found that due to the poor proportion of new TM vehicles during the monitoring period, the personal exposure in the old vehicles and in the new ones is similar. In the case of SITVA, it was evidenced that the mixed lane contributes to a high personal exposure to PM2.5 than the exclusive one.
조혜연,Jorge A. Estrada Vidal,Oscar O. Giraldo Castillo,Luis A. Mayta Mamani,남은우 대한의료정보학회 2019 Healthcare Informatics Research Vol.25 No.1
Objectives: The objective of this case report is to introduce the development process, structure, characteristics, and effectiveness of the web database (DB) system developed for the hypertension management program in the primary health care setting in the low-income urban areas of Peru. Methods: A Korean research team cooperated with a Peruvian IT startup company to develop a web DB system to improve the data management of the hypertension management program. The entire web application infrastructure was hosted using the Amazon Web Service. Two different web platforms were established for the user groups of health workers and researchers (program managers). Results: A total of 2,827 program participants were registered in the web DB system until December 2017. Health professionals can input the participant data while providing consultation to the program participants, and the data is accumulated in the web DB in real time. Input errors or data loss is prevented by setting restrictions in the data entry system. During the 4-year project period, 7,696 hours of working time and USD 39,536.48 for data management were saved as the result of web DB system utilization. Conclusions: The developed web DB system contributed to improve the health condition of the health program participants by providing necessary information to the health professionals at the right time. This case report could be a reference for other researcher to develop web databases for their own context, especially in developing countries.
Sebastián Eustaquio Martín Pérez,Laura Lucas Hernández,Juan Luis Oliva de la Nuez,Aboubaker Soussi El-Hammouti,Tomás González Cobiella,José Carlos del Castillo Rodríguez,Mario Herrera Pérez,Isidro Mig 대한수면연구학회 2024 Journal of sleep medicine Vol.21 No.2
Objectives: This study aimed to investigate sleep patterns and chronotypes in Spanish women diagnosed with fibromyalgia syndrome (FMS).Methods: A descriptive, cross-sectional observational study following the Strengthening the Reporting of Observational Studies in Epidemiology guidelines was conducted from March 1, 2024, to June 10, 2024, at the Fibromyalgia and Chronic Fatigue Syndrome Association of Tenerife (San Cristóbal de La Laguna, Spain).Results: A total of 73 women, with a mean age of 56.15±6.47 years, diagnosed with FMS were enrolled. Bedtime habits and wake-up times showed significant variability, reflecting individual differences in sleep chronotype preferences among the participants. The Pittsburgh Sleep Quality Index revealed a mean score of 11.62±0.92, indicating substantial challenges in sleep quality among participants with FMS. Sleep efficiency was low, averaging 14.86%±0.34%, and there was a significant discrepancy in sleep duration between workdays and free days, with an average difference of 2.0±0.5 h. The participants reported compensatory sleep through an average of two naps per day, each lasting 40 min.Conclusions: Participants with FMS experienced poor sleep quality, characterized by variability in sleep patterns between workdays and free days, along with significant social jet lag. Low sleep efficiency suggests a prevalent sleep debt, which the participants attempted to mitigate through frequent and extended napping.
Zn-22Al-2Cu Alloy Phase Transformations at Different Homogenizing Temperatures
Héctor Javier Dorantes-Rosales,Víctor Manuel López-Hirata,Ramón Esquivel-González,Jorge Luis González-Velazquez,Joel Moreno-Palmerin,Antonio Torres-Castillo 대한금속·재료학회 2012 METALS AND MATERIALS International Vol.18 No.3
The effect of the homogenizing temperature on phase transformations and hardening behavior was studied in a Zn-22Al-2Cu (wt%) alloy homogenized for 7 days at 315, 350, and 390°C. The homogenized alloy was subsequently quenched and aged naturally at room temperature or artificially at 200°C for different time periods. The β phase was unstable at room temperature and it decomposed through the β→α+ηreaction during natural aging. An increase in the homogenizing temperature caused a decrease in the kinet-ics of the decomposition of the β phase in the alloy. Natural aging also caused an increase in the hardness due to the formation of nanometric grains with α and η phases and the presence of an intermetallic εphase. This result agrees with the time exponents (n) between 1.5 and 2.6, which were obtained using the Johnson-Mehl-Avrami-Kolmogorov equation for the decomposition of the β phase. The transformed frac-tion curves exhibited the fastest and slowest growth kinetics of the â phase decomposition at homogeniz-ing temperatures of 350 and 390°C, respectively. The artificial aging induced the formation of equilibrium phases and began a decrease in hardness due to the coarsening process of the equilibrium α, η, and τ'phases.
Martha Hilda Navarro-Salcedo,Jorge Ivan Delgado-Saucedo,Victor Hugo Siordia-Sanchez,Luis J. Gonzalez-Ortiz,Gustavo Adolfo Castillo-Herrera,Ana M. Puebla-Perez 한국식품영양과학회 2017 Journal of medicinal food Vol.20 No.11
We investigated the cytotoxic and antitumor effects of nine leaf extracts from Artemisia dracunculus (Tarragon). Five extracts were obtained using different organic solvents and four by supercritical CO2. The cytotoxic effects were expressed as IC50 in 100, 80, 80, 100, and 80 μg/mL by respective solvents: hexane, ethyl acetate, acetone, ethanol, and acetonitrile in L5178Y lymphoma cells. For supercritical CO2 extract A, IC50 was 100 μg/mL; for extracts C and D, IC50 was 150 μg/mL. The antitumor activity was assessed through a tumor growth inhibition test that measured ascites fluid volume and tumor cell counts of BALB/c mice (2 × 104 cells L5178Y i.p.). Twenty-four hours after inoculation, mice were treated with 100 mg/kg of acetonitrile extract or extract SF-A daily for 15 days in independent groups of five mice, using two administration routes. We observed tumor evolution with and without treatment. Without treatment, tumor evolution was 17,969 × 106 ± 5485 L5178Y cells in 2.6 mL ascites volume, whereas the orally treated acetonitrile extract group showed 0.1 × 106 ± 0.07 L5178Y cells (P < .05). The oral SF-A group showed 12.9 × 106 ± 243 L5178Y cells, and intraperitoneal (i.p.)-treated SF-A group showed 0.1 × 106 ± 0.05 L5178Y cells (P < .05) without any ascites volume development. The acetonitrile extract contains abundant polyphenols and possibly a flavone with antioxidant activity. The SF-A contains abundant alkamides. Both extracts are complexes and the identity of the compounds responsible for observed antitumor activity remains unknown.