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https://www.readbyqxmd.com/read/28732335/characteristics-and-source-apportionment-of-pm2-5-during-persistent-extreme-haze-events-in-chengdu-southwest-china
#1
Lulu Li, Qinwen Tan, Yuanhang Zhang, Miao Feng, Yu Qu, Junling An, Xingang Liu
Based on detailed data from Chengdu Plain (CP) from 6 January to 16 January, two typical haze episodes were analyzed to clarify the haze formation mechanism in winter. Weather conditions, chemical compositions, secondary pollutant transformation, optical properties of aerosols, the potential source contribution function (PSCF) and source apportionment were studied. The planetary boundary layer (PBL) height decreased distinctly during the haze episodes and restrained air pollutant vertical dispersion. As the haze worsened, the value of PBL × PM2...
July 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28725622/authentication-of-piper-betle-l-folium-and-quantification-of-their-antifungal-activity
#2
I Made Agus Gelgel Wirasuta, I Gusti Ayu Made Srinadi, Ida Bagus Gede Dwidasmara, Ni Luh Putu Putri Ardiyanti, I Gusti Ayu Arya Trisnadewi, Ni Luh Putu Vidya Paramita
The TLC profiles of intra- and inter-day precision for Piper betle L. (PBL) folium methanol extract was studied for their peak marker recognition and identification. The Numerical chromatographic parameters (NCPs) of the peak markers, the hierarchical clustering analysis (HCA) and the principal component analysis (PCA) were applied to authenticate the PBL. folium extract from other Piper species folium extract and to ensure the antifungal activity quality of the PBL essential oil. The spotted extract was developed with the mobile phase of toluene: ethyl acetate; 93:7, (v/v)...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28713532/bilateral-cavernous-sinus-thrombosis-as-first-manifestation-of-primary-burkitt-lymphoma-of-the-thyroid-gland
#3
Mehdi Moghaddasi, Mona Nabovvati, Saeed Razmeh
Cavernous sinus thrombosis (CST) is a rare condition that is usually associated with infections, pregnancy, vasculitis and some types of medication, such as the contraceptive pill and paraneoplastic. Primary Burkitt lymphoma (PBL) of the thyroid gland is very uncommon and the clinical description of such cases has been largely limited to case reports. In this paper, we present a case of CST as the first manifestation of PBL of the thyroid gland. To the best of our knowledge, our patient is the first case report of PBL of the thyroid gland that presents with bilateral CST...
June 23, 2017: Neurology International
https://www.readbyqxmd.com/read/28707636/implementation-and-evaluation-of-a-patient-safety-course-in-a-problem-based-learning-program
#4
Sarah Ahmed Eltony, Nahla Hassan El-Sayed, Shimaa El-Sayed El-Araby, Salah Eldin Kassab
BACKGROUND: Since the development of the WHO patient safety curriculum guide, there has been insufficient reporting regarding the implementation and evaluation of patient safety courses in undergraduate problem-based learning (PBL) programs. This study is designed to implement a patient safety course to undergraduate students in a PBL medical school and evaluate this course by examining its effects on students' knowledge and satisfaction. METHODS: The target population included year 6 medical students (n = 71) at the Faculty of Medicine, Suez Canal University in Egypt...
January 2017: Education for Health: Change in Training & Practice
https://www.readbyqxmd.com/read/28702410/plasmablastic-lymphoma-in-immunocompetent-and-in-immunocompromised-patients-experience-at-a-regional-cancer-centre-in-india
#5
A H Rudresha, K C Lakshmaiah, Ankit Agarwal, K Govind Babu, D Loknatha, Linu Abraham Jacob, Suresh Babu, K N Lokesh, L K Rajeev
INTRODUCTION: Plasmablastic lymphoma (PBL) is a rare lymphoma associated with immunosuppression. It is strongly associated with immunosuppression (human immunodeficiency virus [HIV]) and often occurs within the oral cavity. PBL is also seen in patients receiving immunosuppressive therapy; however, despite its predisposition for the immunocompromised patients, PBL has been diagnosed in immunocompetent patients. AIM: This study aims to prognostic factors and outcome of PBL in immunocompromised and in immunocompetent patients...
April 2017: South Asian Journal of Cancer
https://www.readbyqxmd.com/read/28696053/learning-effectiveness-and-satisfaction-of-international-medical-students-introducing-a-hybrid-pbl-curriculum-in-biochemistry
#6
Qiu Yan, Li Ma, Lina Zhu, Wenli Zhang
A biochemistry course is a fundamental but important subject in medical education in China. In recent years, the number of international medical students has increased. Curriculum reform in biochemistry teaching is needed because of the knowledge limitations of students, a close linkage of biochemical content with clinics, the shortcomings of lecture-centered teaching, and the requirements for early clinical practice training and competence. In this study, we analyzed a novel curriculum reform, "Hybrid-PBL," which combined problem-based learning (PBL) with biochemistry lectures and was implemented for biochemical teaching at Dalian Medical University (DMU) in China...
July 8, 2017: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/28689774/expression-of-il-1ra-il-6-il-8-il-18-tnf-%C3%AE-and-ifn-%C3%AE-genes-in-peripheral-blood-leukocytes-of-rabbits-infected-with-rhdv-rabbit-haemorrhagic-disease-virus
#7
Alicja Trzeciak-Ryczek, Beata Tokarz-Deptuła, Wiesław Deptuła
Rabbit haemorrhagic disease virus (RHDV) induces a highly contagious and extremely lethal disease that fulfils many requirements of an animal model of fulminant hepatic failure (FHF); however, the pathogenesis of RHD has still not been fully elucidated. Cytokines play an important role in regulation of the immune response and pathogenesis of many diseases, including those caused by viral infections. Furthermore, recent studies indicate a role of the immune response, especially peripheral blood leukocytes (PBL), in the pathogenesis of RHD...
July 8, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28679577/learning-through-debate-during-problem-based-learning-an-active-learning-strategy
#8
Sadaf Mumtaz, Rabia Latif
We explored medical student's views and perceptions of a series of debates conducted during problem-based learning (PBL) practiced as a part of the Spiral curriculum at the Imam Abdulrahman Bin Faisal University, Saudi Arabia. A series of debates were employed during PBL sessions for second-year female medical students, over the period 2014-2016. Each cohort of students was randomly split into 10 small PBL groups and exposed to weekly PBL activity. Within each group, the students were divided into a proposition half and an opposition half...
September 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28674300/systematic-and-stepwise-interprofessional-education-in-showa-university
#9
Yuji Kiuchi
 At Showa University, which consists of the schools of medicine, dentistry, pharmacy, nursing and rehabilitation sciences, systematic interprofessional education was introduced with the cooperation of all 4 schools and through all undergraduate grades with the purpose of training medical staff who can contribute positively to the medical team. In the lower grades, students study the basics of medical team care based on a 4-school joint curriculum of experience learning (such as early exposure) and problem-based learning (PBL) tutorial inside and outside of the university...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28670294/teacher-perceptions-of-their-curricular-and-pedagogical-shifts-outcomes-of-a-project-based-model-of-teacher-professional-development-in-the-next-generation-science-standards
#10
David J Shernoff, Suparna Sinha, Denise M Bressler, Dawna Schultz
In this study, we conducted a model of teacher professional development (PD) on the alignment of middle and high school curricula and instruction to the Next Generation Science Standards (NGSSs), and evaluated the impact of the PD on teacher participants' development. The PD model included a 4-day summer academy emphasizing project-based learning (PBL) in the designing of NGSS-aligned curricula and instruction, as well as monthly follow-up Professional Learning Community meetings throughout the year providing numerous opportunities for teachers to develop and implement lesson plans, share results of lesson writing and implementation (successes and challenges), provide mutual feedback, and refine curricula and assessments...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28667308/enhanced-pm2-5-pollution-in-china-due-to-aerosol-cloud-interactions
#11
Bin Zhao, Kuo-Nan Liou, Yu Gu, Qinbin Li, Jonathan H Jiang, Hui Su, Cenlin He, Hsien-Liang R Tseng, Shuxiao Wang, Run Liu, Ling Qi, Wei-Liang Lee, Jiming Hao
Aerosol-cloud interactions (aerosol indirect effects) play an important role in regional meteorological variations, which could further induce feedback on regional air quality. While the impact of aerosol-cloud interactions on meteorology and climate has been extensively studied, their feedback on air quality remains unclear. Using a fully coupled meteorology-chemistry model, we find that increased aerosol loading due to anthropogenic activities in China substantially increases column cloud droplet number concentration and liquid water path (LWP), which further leads to a reduction in the downward shortwave radiation at surface, surface air temperature and planetary boundary layer (PBL) height...
June 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28662998/hematolymphoid-lesions-of-the-breast
#12
REVIEW
Jenny Hoffmann, Robert S Ohgami
Hematolymphoid malignancies of the breast are most commonly neoplasms of mature B-lymphocytes, and may arise as a primary disease or by secondary involvement of a systemic disease. Primary breast lymphomas (PBL) account for 0.04-0.5% of breast malignancies, less than 1% of all non-Hodgkin's lymphomas (NHL), and less than 5% of extranodal lymphomas (Lakhani et al., 2012; Swerdlow et al., 2008; Joks et al., 2011; Barişta et al., 2000; Giardini et al., 1992; Brogi and Harris, 1999; Topalovski et al., 1999).(1-7) Secondary breast lymphomas (SBL) are also rare, with an estimated annual incidence of 0...
May 28, 2017: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28657148/association-between-mitochondrial-dna-content-and-baseline-serum-levels-of-hbsag-in-chronic-hepatitis-b-infection
#13
Tianbin Chen, Zhen Xun, Jinpiao Lin, Ya Fu, Wennan Wu, Xiaochun Fu, Yuhai Hu, Yongbin Zeng, Qishui Ou
Recent studies have demonstrated a potential link between mitochondrial DNA (mtDNA) content and cirrhosis or hepatocellular carcinoma (HCC). However, there are few studies evaluating mtDNA content as a noninvasive marker of chronic hepatitis B infection (CHB). In this study, we conducted a case-control study to determine mtDNA content in peripheral blood leukocyte (PBL) samples from 76 CHB cases naïve to antivirus therapy and 96 healthy controls, and then evaluated the association between mtDNA content and baseline serum concentration of HBV markers...
June 28, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28632009/self-observation-and-peer-feedback-as-a-faculty-development-approach-for-problem-based-learning-tutors-a-program-evaluation
#14
Irène Garcia, Richard W James, Paul Bischof, Anne Baroffio
PROBLEM: Good teaching requires spontaneous, immediate, and appropriate action in response to various situations. It is even more crucial in problem-based learning (PBL) tutorials, as the tutors, while directing students toward the identification and attainment of learning objectives, must stimulate them to contribute to the process and provide them with constructive feedback. PBL tutors in medicine lack opportunities to receive feedback from their peers on their teaching strategies. Moreover, as tutorials provide little or no time to stop and think, more could be learned by reflecting on the experience than from the experience itself...
July 2017: Teaching and Learning in Medicine
https://www.readbyqxmd.com/read/28631253/portal-branch-ligation-does-not-counteract-the-inhibiting-effect-of-temsirolimus-on-extrahepatic-colorectal-metastatic-growth
#15
Sebastian Senger, Jens Sperling, Barbara Oberkircher, Martin K Schilling, Otto Kollmar, Michael D Menger, Christian Ziemann
The mTor-inhibitor temsirolimus (TEM) has potent anti-tumor activities on extrahepatic colorectal metastases. Treatment of patients with advanced disease may require portal branch ligation (PBL). While PBL can induce intrahepatic tumor growth, the effect of PBL on extrahepatic metastases under TEM treatment is unknown. Therefore, we analyzed the effects of TEM treatment on extrahepatic metastases during PBL-associated liver regeneration. GFP-transfected CT26.WT colorectal cancer cells were implanted into the dorsal skinfold chamber of BALB/c-mice...
June 19, 2017: Clinical & Experimental Metastasis
https://www.readbyqxmd.com/read/28620384/measuring-leukocyte-adhesion-to-primary-endothelial-cells-after-photon-and-charged-particle-exposure-with-a-dedicated-laminar-flow-chamber
#16
Nadine Erbeldinger, Felicitas Rapp, Svetlana Ktitareva, Philipp Wendel, Anna S Bothe, Till Dettmering, Marco Durante, Thomas Friedrich, Bianca Bertulat, Stephanie Meyer, M C Cardoso, Stephanie Hehlgans, Franz Rödel, Claudia Fournier
The vascular endothelium interacts with all types of blood cells and is a key modulator of local and systemic inflammatory processes, for example, in the adhesion of blood leukocytes to endothelial cells (EC) and the following extravasation into the injured tissue. The endothelium is constantly exposed to mechanical forces caused by blood flow, and the resulting shear stress is essential for the maintenance of endothelial function. Changes in local hemodynamics are sensed by EC, leading to acute or persistent changes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28619525/murine-and-human-pancreatic-tumor-exosome-recovery-in-mouse-serum-diagnostic-and-prognostic-potential-and-target-cell-delivery
#17
Ulrike Erb, Kun Zhao, Zhe Wang, Li Xiao, Margot Zöller
Exosomes (Exo), powerful intercellular communicators, are recovered in all body fluids, suggesting suitability for diagnosis and prognosis. Easy in vitro manipulation recommends Exo as drug vehicles. Aiming to consolidate diagnostic and therapeutic potential of Exo, we evaluated recovery and fate of tumor (TEX) and exogenous Exo in syngeneic and xenogeneic mice bearing a murine or a human pancreatic adenocarcinoma. A significant increase in serum (S)-TEX was observed 2 weeks after tumor cell application. Instead, S-TEX declined within 3-6 days after tumor excision...
June 12, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28613279/nox-mediated-impairment-of-pdgf-induced-dna-synthesis-in-peripheral-blood-lymphocytes-of-children-with-idiopathic-nephrotic-syndrome
#18
Amal Al-Eisa, Gursev S Dhaunsi
BackgroundCellular oxidative stress, inflammatory responses, and immunogenic events are involved in pathogenesis of idiopathic nephrotic syndrome (INS); however, the exact mechanism remains unknown. We examined NADPH oxidase (NOX) activity and platelet-derived growth factor (PDGF)-induced DNA synthesis in peripheral blood lymphocytes (PBL) of patients with INS.MethodsPBL from 15 patients with INS and 15 age- and gender-matched controls were isolated, and enzyme activities of NOX, catalase, and superoxide dismutase (SOD) were measured along with the assay of malondialdehyde levels and bromo-deoxyuridine incorporation...
June 14, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28607019/in-vitro-in-vivo-discordance-with-humanized-piperacillin-tazobactam-exposures-against-piperacillin-tazobactam-resistant-pan-%C3%AE-lactam-susceptible-klebsiella-pneumoniae-strains
#19
S M Stainton, M L Monogue, D P Nicolau
Recent findings have identified Klebsiella pneumoniae strains that are pan-β-lactam susceptible (PBL-S) but piperacillin-tazobactam resistant (TZP-R) in vitro We assessed the efficacy of a humanized exposure of piperacillin-tazobactam (TZP) against 12 TZP-R/PBL-S K. pneumoniae isolates in an immunocompromised murine lung infection model. Discordance between the in vitro resistance profile and the in vivo efficacy of human-simulated TZP exposures against this phenotypic profile was observed. Additional studies are required to define the clinical implications of these TZP-R/PBL-S strains...
July 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28600042/the-effectiveness-of-clinical-problem-based-learning-model-of-medico-jurisprudence-education-on-general-law-knowledge-for-obstetrics-gynecological-interns
#20
Hui-Chin Chang, Ning-Yen Wang, Wen-Ru Ko, You-Tsz Yu, Long-Yau Lin, Hui-Fang Tsai
OBJECTIVE: The effective education method of medico-jurisprudence for medical students is unclear. The study was designed to evaluate the effectiveness of problem-based learning (PBL) model teaching medico-jurisprudence in clinical setting on General Law Knowledge (GLK) for medical students. MATERIALS AND METHODS: Senior medical students attending either campus-based law curriculum or Obstetrics/Gynecology (Ob/Gyn) clinical setting morning meeting from February to July in 2015 were enrolled...
June 2017: Taiwanese Journal of Obstetrics & Gynecology
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