The closer to the visceral pleura, the more severe the exudation of monocytes and lymphocytes. Perivascular inflammatory infiltration, intraalveolar multinucleated giant cells, pneumocyte hyperplasia and intracytoplasmic viral-like inclusion bodies were seen. However, fibrinous exudate and hyaline membrane formation, which were typical pulmonary features of SARS pneumonia, were not evident in this case. Immunohistochemical staining results showed that an abnormal accumulation of CD4+ helper T lymphocytes and CD163+ M2 macrophages in the lung tissue. CONCLUSION The results highlighted the pulmonary pathological changes of early phase SARS-CoV-2 infection and suggested a role of immune dysfunction in the pathogenesis of COVID-19 pneumonia. This article is protected by copyright. All rights reserved.Aseptic loosening of the glenoid component is one of the main reasons for the high revision rates of reverse total shoulder arthroplasty (RTSA). It has been reported that the bulky implant designs may lead to stress shielding. However, it is uncertain whether the shielding effect is severe enough to lead to bone resorption and glenoid loosening. The purpose of this study was to evaluate the level of stress-shielding and assess whether bone resorption plays a role in aseptic glenoid loosening following RTSA. A cadaveric in vitro test model was used to validate a finite element model (FEM) of the scapula. The FEM of the scapula, incorporating adaptive bone remodeling algorithms, was used to predict changes in postoperative bone density after RTSA. Changes in bone strength after implantation were also analyzed. The strain values predicted from the FEM of the scapula were in agreement with the in vitro measurements. Analysis of postoperative bone adaptation revealed that strain-induced bone resorption began at the peg of the implant and around the resected bone surface and then gradually expended to the peripheral regions. The bone strength also reduced postoperatively and appeared particularly around the implant peg. Strain-induced bone resorption is a likely source of the bone loss commonly observed in RTSA. The finite element glenoid bone remodeling simulation may be used as a tool to evaluate glenoid implant design. © 2020 The Authors. Journal of Orthopaedic Research® published by Wiley Periodicals LLC on behalf of Orthopaedic Research Society.The relationship between Renin-Angiotensin system (RAS) and COVID-19 pandemic and, in particular, RAS as part of the CoV-2 infection process via Angiotensin Converting Enzyme 2 (ACE2), the entry point of SARS-CoV-2, has resulted in conflicting suggestions regarding how RAS and its role(s) should inform treating COVID-19. ACE inhibitors or angiotensin II (Ang)-type 1 receptor blockers (ARBs), in fact, have been suggested to be avoided as they potentially upregulate ACE2 1 and, conversely, there are suggestions that ARBs might be beneficial 2 as SARS-CoV-2 causing ACE2 downregulation slows the Ang II conversion to the vasodilatory, anti-inflammatory, antioxidant and antiatherosclerotic Ang 1-7 3-5 , and the use of ARBs by blocking the excessive Ang II type-1 receptors activation, would be beneficial upregulating ACE2 activity and increasing Ang 1-7 levels. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.High mobility group box 1 (HMGB1), a nuclear protein, once released to the extracellular space, facilitates pain signals as well as inflammation. Intraplantar or intraspinal application of HMGB1 elicits hyperalgesia/allodynia in rodents by activating the advanced glycosylation end-product specific receptor (receptor for advanced glycation end-products; RAGE) or Toll-like receptor 4 (TLR4). Endogenous HMGB1 derived from neurons, perineuronal cells or immune cells accumulating in the dorsal root ganglion or sensory nerves participates in somatic and visceral pain consisting of neuropathic and/or inflammatory components. Endothelial thrombomodulin (TM) and recombinant human soluble TM, TMα, dramatically promote thrombin-dependent degradation of HMGB1, and systemic administration of TMα prevents and reverses various HMGB1-dependent pathological pain. Small molecules that directly inactivate HMGB1 or antagonize HMGB1-targeted receptors would be useful to reduce various intractable pain. Thus, HMGB1 and its receptors are considered to serve as promising targets in developing novel agents to prevent or treat pathological pain. This article is protected by copyright. All rights reserved.The global market of butanol is increasing due to its growing applications as solvent, flavoring agent and chemical precursor of several other compounds. Recently, the superior properties of n-butanol as a biofuel over ethanol have stimulated even more interest. (Bio)butanol is natively produced together with ethanol and acetone by Clostridium species through Acetone-Butanol-Ethanol fermentation, at non-competitive, low titers compared to petrochemical production. Different butanol production pathways have been expressed in Escherichia coli, a more accessible host compared to Clostridium species, to improve butanol titers and rates.. The bioproduction of butanol is here reviewed from a historical and theoretical perspective. All tested rational metabolic engineering strategies in E. coli to increase butanol titers are reviewed manipulation of central carbon metabolism; elimination of competing pathways; cofactor balancing; development of new pathways; expression of homologous enzymes; consumption of different substrates and molecular biology strategies. https://www.selleckchem.com/products/Dihydroartemisinin(DHA).html The progress in the field of metabolic modeling and pathway generation algorithms and their potential application to butanol production are also summarized here. The main goals are to gather all the strategies, evaluate the respective progress obtained, identify and exploit the outstanding challenges. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.It may not be surprising that the brain as a lipid-rich organ shows perturbed lipid profiles in neurodegenerative conditions such as Alzheimer's disease. It is, however, more challenging to detect these changes as they may only occur in a spatially small area. This Editorial highlights the work by Kaya et al. using a raising technology called MALDI IMS to identify up- or downregulation of specific lipids in and around the amyloid plaque, one of the pathological hallmarks of Alzheimer's disease. Interestingly, such lipid changes were paralleled with disrupted myelin structure only at the border between white and gray matter. The sequestration of apolipoprotein E towards the amyloid plaque may provide a clue towards the underlying mechanisms leading to disrupted lipid profiles. This study highlights the necessity to increase research activities related to lipid metabolism in Alzheimer's disease and demonstrates that the technological progress now facilitates the advancement of this area. © 2020 International Society for Neurochemistry.