Study of the complement activation by amyloid aggregates of smooth muscle titin in vitro.

Study of the complement activation by amyloid aggregates of smooth muscle titin in vitro. J Immunoassay Immunochem. 2019 Nov 20;:1-12 Authors: Yakupova EI, Bobylev AG, Bobyleva LG, Vikhlyantsev IM Abstract The giant muscle protein, titin, is the third most abundant protein in muscle (after myosin and actin). It was shown previously that smooth muscle titin (SMT) with a molecular mass of 500 kDa can form in vitro amorphous amyloid aggregates in two conditions: in solution of low ionic strength (0.15 M Glycine-KOH, pH 7.0) (SMT(Gly) aggregates) and in solution with ionic strength in the physiological range (0.2 M KCl, 20 mM imidazole, pH 7.2-7.4) (SMT(KCl) aggregates). Such aggregation in vivo, which may play a pathological or functional role, is not excluded. In view of the fact that some pathological amyloids can activate the classical and alternative pathways of complement system, we investigated the binding of complement component C1q and C3b to smooth muscle titin amyloid aggregates. The binding of С1q and C3b to SMT aggregates was not observed with ELISA assay. Since SMT aggregates do not activate the complement system, they are hardly implicated in the inflammatory process caused by muscle damage in amyloidoses.Abbreviations: SMT: smooth muscle titin; SMT(KCl) aggregates: SMT aggregates in solution containing 0.2 M KCl, 10 mM imidazole, pH 7.0; SMT(Gly) aggregates: SMT aggregates in solution containing 0.15 M glycine-KOH, pH 7.2-7.4; MAC: membrane a...
Source: Journal of Immunoassay and Immunochemistry - Category: Biochemistry Tags: J Immunoassay Immunochem Source Type: research

Related Links:

Publication date: Available online 1 April 2020Source: Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of LipidsAuthor(s): Florina Zakany, Tamas Kovacs, Gyorgy Panyi, Zoltan Varga
Source: Biochimica et Biophysica Acta (BBA) Molecular and Cell Biology of Lipids - Category: Lipidology Source Type: research
CONCLUSION: Pregnancy outcomes after hysteroscopic placement of a microinsert for hydrosalpinx management before embryo transfer were comparable to those following laparoscopic proximal tubal occlusion or salpingectomy. However, caution is advised regarding microinsert placement for hydrosalpinges before proceeding with assisted reproductive technology. PMID: 32224160 [PubMed - as supplied by publisher]
Source: Journal of Obstetrics and Gynaecology Canada : JOGC - Category: OBGYN Tags: J Obstet Gynaecol Can Source Type: research
Authors: Feres M, Retamal-Valdes B, Faveri M, Duarte P, Shibli J, Soares GMS, Miranda T, Teles F, Goodson M, Hasturk H, Van Dyke T, Ehmke B, Eickholz P, Schlagenhauf U, Meyle J, Koch R, Kocher T, Hoffmann T, Kim TS, Kaner D, Figueiredo LC, Doyle H Abstract OBJECTIVE: The selection of proper outcome measures is a critical step in clinical research. Most randomized clinical trials (RCTs) assessing the effects of initial anti-infective periodontal therapies use surrogate outcomes as primary outcome variables, such as mean changes in probing depth (PD) or in clinical attachment. However, these parameters do not reflect...
Source: Journal of the International Academy of Periodontology - Category: Dentistry Tags: J Int Acad Periodontol Source Type: research
CONCLUSION: Within the limits of our study, the results of this trial indicate that reconstructive periodontal surgery with PTG offers minimal radiographic defect resolution with no significant improvements in clinical endpoints compared to open flap debridement. PMID: 32224548 [PubMed - in process]
Source: Journal of the International Academy of Periodontology - Category: Dentistry Tags: J Int Acad Periodontol Source Type: research
CONCLUSION: P. gingivalis and F. nucleatum inoculation induced significant changes in intestinal inflammation and caecal microbiome. Oral gavage with LGG exerted a protective effect against intestinal inflammation and limited gut microbiome changes associated with P. gingivalis and F. nucleatum. PMID: 32224547 [PubMed - in process]
Source: Journal of the International Academy of Periodontology - Category: Dentistry Tags: J Int Acad Periodontol Source Type: research
CONCLUSIONS: Non-surgical periodontal therapy was effective during the first 18 months, but periodontal conditions were worse at 48 months after therapy. The distal sites of abutment teeth with direct retainers presented the worst periodontal conditions. PMID: 32224546 [PubMed - in process]
Source: Journal of the International Academy of Periodontology - Category: Dentistry Tags: J Int Acad Periodontol Source Type: research
CONCLUSION: Individuals with DD undergoing PMT presented higher rates of recurrence of periodontitis and tooth loss when compared to individuals without DD. Additionally, the interaction between DD and smoking significantly increased the risk for the recurrence of periodontitis. PMID: 32224545 [PubMed - in process]
Source: Journal of the International Academy of Periodontology - Category: Dentistry Tags: J Int Acad Periodontol Source Type: research
Publication date: Available online 31 March 2020Source: Contemporary Educational PsychologyAuthor(s): Eike Wille, Gundula Stoll, Thomas Gfrörer, Jenna Cambria, Benjamin Nagengast, Ulrich Trautwein
Source: Contemporary Educational Psychology - Category: Child Development Source Type: research
Publication date: Available online 31 March 2020Source: Food Quality and PreferenceAuthor(s): Andrijana Mušura Gabor, Bojan Stojnić, David Ban-Ostić
Source: Food Quality and Preference - Category: Food Science Source Type: research
Publication date: Available online 31 March 2020Source: Food Quality and PreferenceAuthor(s): Berta Schnettler, Edgardo Miranda-Zapata, Ligia Orellana, Tino Bech-Larsen, Klaus G. Grunert
Source: Food Quality and Preference - Category: Food Science Source Type: research
More News: Biochemistry | Study