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Bronchial asthma as well as COVID-19: classes learned and queries that remain.
in German HINTERGRUND Die Bezeichnung hereditäres Angioödem (HAE) steht für eine Gruppe genetischer Erkrankungen mit rezidivierenden, schmerzhaften und potenziell lebensbedrohlichen Gewebeschwellungen. Die häufigste Variante des HAE entsteht durch Mutationen im SERPING1-Gen, die zu einer eingeschränkten Funktion des Komplement-1-Inhibitors (C1-INH) führen. Seltenere Formen mit normaler Funktion des C1-INH können durch Mutationen im Gen für den Gerinnungsfaktor F12 ausgelöst werden, oft ist der genetische Hintergrund jedoch nicht bekannt. Vor kurzem wurde eine neue HAE-Mutation im Plasminogen (PLG)-Gen nachgewiesen. PATIENTEN UND METHODIK Wir untersuchten die unterschiedlichen klinischen Manifestationen des HAE bei 14 verwandten Patienten mit Hilfe von klinischen Befunden, biochemischen Analysen für C1-INH und C4 sowie der Gensequenzanalyse. ERGEBNISSE Die Symptome der Patienten konnten zwei verschiedenen Varianten des HAE zugeordnet werden. Bei zehn Patienten mit Schwellungen von Lippen und Zunge ohne Beteiligung der Extremitäten fanden wir eine Mutation des PLG-Gens (c.988A>G). Bei vier der 14 Patienten mit Schwellungen im Gastrointestinaltrakt und an den Extremitäten konnten wir eine Mutation im SERPING1-Gen identifizieren (c.1480C>T). In zweien dieser Fälle bestand zusätzlich eine c.988A>G-Mutation im PLG-Gen. SCHLUSSFOLGERUNGEN Dieser bisher einmalige Befund von zwei verschiedenen HAE-spezifischen Mutationen in einer Großfamilie liefert nicht nur eine Erklärung für die divergierenden Phänotypen, sondern legt nahe, dass eine Korrelation zwischen Genotyp und Phänotyp besteht. Abdominale Schübe und Schwellungen an den Extremitäten sind bei HAE-C1-INH häufig, bei HAE-PLG jedoch ungewöhnlich.BACKGROUND To compare the diagnostic yield of peripheral pulmonary lesions (PPLs) with and without navigation system. METHODS Studies dating from January 1990 to October 2019 were collected from databases. Diagnostic yield of navigation bronchoscopy and non-navigation bronchoscopy was extracted from comparative studies. Subgroup analysis was adopted to test diagnostic yield variation by lesion size, lobe location of the lesion, distance from the hilum, bronchus sign and nature of the lesion. RESULTS In total, 2131 patients from 10 studies were enrolled into the study. Diagnostic yield of navigation bronchoscopy was statistically higher than non-navigation bronchoscopy for PPLs (odds ratio [OR] 1.69, 95% confidence interval [CI] 1.32, 2.18, P less then  0.001), particularly for PPLs in the peripheral third lung (OR 2.26, 95% CI 1.48, 3.44, P less then  0.001) and for bronchus sign positive PPLs (OR 2.26, 95% CI 1.21, 4.26, P = 0.011). Navigation bronchoscopy had better performance than non-navigation bronchoscopy when PPLs were ≤ 20 mm (OR 2.09, 95% CI 1.44, 3.03, P less then  0.001). It also elevated diagnostic yield of malignant PPLs (OR 1.67, 95% CI 1.26, 2.22, P less then  0.001) and PPLs in the bilateral upper lobes (OR 1.50, 95% CI 1.09, 2.08, P = 0.014). CONCLUSIONS Navigation bronchoscopy enhanced diagnostic yield when compared to non-navigation bronchoscopy, particularly for PPLs in the peripheral third lung, PPLs being bronchus sign positive, PPLs ≤ 20 mm, malignant PPLs and PPLs in the bilateral upper lobes. KEY POINTS The current study provided systematic evaluation on the diagnostic value of navigation bronchoscopy by comparing it with non-navigation bronchoscopy, and exploring the factors affecting the diagnostic yield. © 2020 The Authors. Thoracic Cancer published by China Lung Oncology Group and John Wiley & Sons Australia, Ltd.Lymph node metastasis is one of the most important independent risk factors that can negatively affect the prognosis of prostate cancer (PCa); however, the exact mechanisms have not been well studied. This study aims to better understand the underlying mechanism of lymph node metastasis in PCa by bioinformatics analysis. We analysed a total of 367 PCa cases from the cancer genome atlas database and performed weighted gene co-expression network analysis to explore some modules related to lymph node metastasis. Gene Ontology analysis and pathway enrichment analysis were conducted for functional annotation, and a protein-protein interaction network was built. Samples from the International Cancer Genomics Consortium database were used as a validation set. The turquoise module showed the most relevance with lymph node metastasis. Functional annotation showed that biological processes and pathways were mainly related to activation of the processes of cell cycle and mitosis. Four hub genes were selected CKAP2L, CDCA8, ERCC6L and ARPC1A. Further validation showed that the four hub genes well-distinguished tumour and normal tissues, and they were good biomarkers for lymph node metastasis of PCa. In conclusion, the identified hub genes facilitate our knowledge of the underlying molecular mechanism for lymph node metastasis of PCa. © 2020 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd.Inspired by the highly versatile natural motors, artificial micro-/nanomotors that can convert surrounding energies into mechanical motion and accomplish multiple tasks are devised. In the past few years, micro-/nanomotors have demonstrated significant potential in biomedicine. However, the practical biomedical applications of these small-scale devices are still at an infant stage. For successful bench-to-bed translation, biocompatibility of micro-/nanomotor systems is the central issue to be considered. Herein, the recent progress in micro-/nanomotors in biocompatibility is reviewed, with a special focus on their biomedical applications. Through close collaboration between researches in the nanoengineering, material chemistry, and biomedical fields, it is expected that a promising real-world application platform based on micro-/nanomotors will emerge in the near future. © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Modeling protein structures is critical for understanding protein functions in various biological and biotechnological studies. Pentetic Acid purchase Among representative protein structure modeling approaches, template-based modeling (TBM) is by far the most reliable and most widely used approach to model protein structures. However, it still remains as a challenge to select appropriate software programs for pairwise alignments and model building, two major steps of the TBM. In this paper, pairwise alignment methods for TBM are first compared with respect to the quality of structure models built using these methods. This comparative study is conducted using comprehensive datasets, which cover 6185 domain sequences from Structural Classification of Proteins extended for soluble proteins, and 259 Protein Data Bank entries (whole protein sequences) from Orientations of Proteins in Membranes database for membrane proteins. Overall, a profile-based method, especially PSI-BLAST, consistently shows high performance across the datasets and model evaluation metrics used.
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