Denaturant effect on amyloid fibrils: Declasterization, depolymerization, denaturation and reassembly.

Denaturant effect on amyloid fibrils: Declasterization, depolymerization, denaturation and reassembly. Int J Biol Macromol. 2020 Feb 11;: Authors: Sulatsky MI, Sulatskaya AI, Stepanenko OV, Povarova OI, Kuznetsova IM, Turoverov KK Abstract Accumulation of amyloid fibrils in organism accompanies many serious diseases, such as Alzheimer's and Parkinson's diseases, diabetes, prion diseases, etc. It is generally accepted that amyloids are highly resistant to degradation, which complicates their elimination in vivo and is one of the reasons for their pathogenicity. However, using a wide range of physicochemical approaches and specially elaborated method for the tested samples preparation by equilibrium microdialysis technique, it is proved that the stability of amyloids is greatly exaggerated. It turned out that amyloid fibrils formed from at least two amyloidogenic proteins, one of which is a model object for fibrils studying and the second is the cause of hemodialysis amyloidosis in an acute renal failure, are less stable than monomeric proteins. A mechanism of the degradation/reassembly of amyloid fibrils was proposed. It was shown that amyloid «seed» is a factor affecting not only the rate of the fibrils formation, but also their structure. Obtained results are a step towards identifying effects that can lead to degradation of amyloids and their clearance without adverse influence on the functionally active state of the protein or to change th...
Source: International Journal of Biological Macromolecules - Category: Biochemistry Authors: Tags: Int J Biol Macromol Source Type: research

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Publication date: Available online 10 October 2020Source: American Journal of Kidney DiseasesAuthor(s): Ibironke W. Apata, Sarah Kabbani, Alicia M. Neu, Tamara M. Kear, Erika M.C. D’Agata, David J. Levenson, Alan S. Kliger, Lauri A. Hicks, Priti R. Patel, authors constitute the ASN and CDC Antibiotic Stewardship White Paper Writing Group
Source: American Journal of Kidney Diseases - Category: Urology & Nephrology Source Type: research
CONCLUSION: The proposed PHARMAC criteria will give access to these important drugs to those people with T2DM who will likely benefit the most. PMID: 33032305 [PubMed - in process]
Source: New Zealand Medical Journal - Category: General Medicine Tags: N Z Med J Source Type: research
Authors: Siamashvili M, Davis S Abstract INTRODUCTION: Bromocriptine mesylate quick release (QR) is a dopamine D2 receptor agonist and is the only oral, primarily centrally acting drug that can be used for the treatment of adults with type 2 diabetes. AREAS COVERED: The authors describe current recommendations on the use of bromocriptine mesylate QR. Major efficacy and safety parameters of the late phase trials, including The Cycloset Safety Trial, have been identified and presented. EXPERT OPINION: Efficacy of bromocriptine mesylate QR monotherapy appears to be low but is compensated by favorable safety pr...
Source: Expert Opinion on Pharmacotherapy - Category: Drugs & Pharmacology Tags: Expert Opin Pharmacother Source Type: research
Publication date: December 2020Source: Journal of Functional Foods, Volume 75Author(s): Tingting Wang, Lin Zheng, Tiantian Zhao, Qi Zhang, Zhitong Liu, Xiaoling Liu, Mouming Zhao
Source: Journal of Functional Foods - Category: Nutrition Source Type: research
TYPE 2 diabetes may feel like a minefield - can you eat this or that without spiking blood sugar levels? If you're feeling peckish, what's a good, healthy option for lunch?
Source: Daily Express - Health - Category: Consumer Health News Source Type: news
CONCLUSIONS: The Korean MDS-UPDRS has the same overall structure as the English MDS-UPDRS. Our translated scale can be designated as the official Korean MDS-UPDRS. PMID: 33029970 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
CONCLUSIONS: Young adult IS patients in Korea exhibit low awareness and poor management of their risk factors. Although the short-term outcome was relatively favorable in those patients, having SLE was associated with unfavorable outcomes. More attention needs to be paid for improving awareness and controlling risk factors in this population. PMID: 33029967 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
Authors: Chung W, Promrat K, Wands J Abstract Diabetes mellitus (DM) negatively affects the development and progression of chronic liver diseases (CLD) of various etiologies. Concurrent DM and CLD are also associated with worse clinical outcomes with respect to mortality, the occurrence of hepatic decompensation, and the development of hepatocellular carcinoma (HCC). Unfortunately, early diagnosis and optimal treatment of DM can be challenging, due to the lack of established clinical guidelines as well as the medical complexity of this patient population. We conducted an exploratory review of relevant literature to...
Source: World Journal of Hepatology - Category: Gastroenterology Tags: World J Hepatol Source Type: research
Authors: Arab JP, Dirchwolf M, Álvares-da-Silva MR, Barrera F, Benítez C, Castellanos-Fernandez M, Castro-Narro G, Chavez-Tapia N, Chiodi D, Cotrim H, Cusi K, de Oliveira CPMS, Díaz J, Fassio E, Gerona S, Girala M, Hernandez N, Marciano S, Masson W, Mendez-Sanchez N, Leite N, Lozano A, Padilla M, Panduro A, Paraná R, Parise E, Perez M, Poniachik J, Restrepo JC, Ruf A, Silva M, Tagle M, Tapias M, Torres K, Vilar-Gomez E, Costa Gil JE, Gadano A, Arrese M Abstract Non-alcoholic fatty liver disease (NAFLD) currently represents an epidemic worldwide. NAFLD is the most frequently diagnosed chr...
Source: Annals of Hepatology - Category: Gastroenterology Tags: Ann Hepatol Source Type: research
Authors: Kim MS, Moon JS, Kim MJ, Seong MW, Park SS, Ko JS Abstract Hereditary fructose intolerance (HFI) is an autosomal recessive disorder caused by a mutation in the aldolase B gene. HFI patients exhibit nausea, vomiting, abdominal pain, hypoglycemia, and elevated liver enzymes after dietary fructose exposure. Chronic exposure might lead to failure to thrive, liver failure, renal failure, and, eventually, death. HFI usually manifests in infants when they are being weaned off of breastmilk. Because HFI has an excellent prognosis when patients maintain a strict restrictive diet, some patients remain undiagnosed du...
Source: Gut and Liver - Category: Gastroenterology Tags: Gut Liver Source Type: research
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