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| 1 | Elastic Aerogels of Cellulose Nanofibers@Metal–Organic Frameworks for Thermal Insulation and Fire Retardancy显示文摘Metal–organic frameworks(MOFs)with high microporosity and relatively high thermal stability are potential thermal insulation and flame-retardant materials.However,the difficulties in processing and shaping MOFs have largely hampered their applications in these areas.This study outlines the fabrication of hybrid CNF@MOF aerogels by a stepwise assembly approach involving the coating and cross-linking of cellulose nanofibers(CNFs)with continuous nanolayers of MOFs.The cross-linking gives the aerogels high mechanical strength but superelasticity(80%maximum recoverable strain,high specific compression modulus of^200 MPa cm3 g−1,and specific stress of^100 MPa cm3 g−1).The resultant lightweight aerogels have a cellular network structure and hierarchical porosity,which render the aerogels with relatively low thermal conductivity of^40 mW m−1 K−1.The hydrophobic,thermally stable MOF nanolayers wrapped around the CNFs result in good moisture resistance and fire retardancy.This study demonstrates that MOFs can be used as efficient thermal insulation and flame-retardant materials.It presents a pathway for the design of thermally insulating,superelastic fire-retardant nanocomposites based on MOFs and nanocellulose. | Shengyang Zhou Varvara Apostolopoulou‑Kalkavoura Marcus Vinicius Tavares da Costa Lennart Bergstrom Maria Stromme Chao Xu | 2020 | Nano-Micro Letters2020，12，1： | 10 |
| 2 | Possibility of non-invasive diagnosis of gastric mucosal precancerous changes显示文摘AIM: To assess the possibility of non-invasive screening of atrophic chronic gastritis for preventing further development of gastric cancer.METHODS: One hundred and seventy-eight consecutive Helicobacter pylori ( H pylori)-positive dyspeptic patients after detection of serum levels of pepsinogen-1 (PG-1) and gastrin-17 (G-17) by enzyme immunoassay were proposed for endoscopy and histology. The serologic and morphologic results were compared with estimating the sensitivity, specificity and prognostic values of the tests.RESULTS: There was statistically significant reverse dependence between the grade of stomach mucosal antral or corpus atrophy and the proper decreasing of serum G17 or PG1 levels. The serologic method was quite sensitive in the diagnosis of non-atrophic and severe antral and corpus gastritis. Also, it was characterized by the high positive and negative prognostic values.CONCLUSION: Detection of serum G-17 and PG1 levels can be offered as the screening tool for atrophic gastritis. The positive serologic results require further chromoendoscopy with mucosal biopsy, for revealing probable progressing of atrophic process with development of intestinal metaplasia, dysplasia or gastric cancer. | Victor D.Pasechnikov Sergey Z.Chukov Sergey M. Kotelevets Alexander N. Mostovov Varvara P. Mernova Maria B. Polyakova | 2004 | World Journal of Gastroenterology2004，10，21： | 7 |
| 3 | Effects of ketogenic diet and ketone bodies on the cardiovascular system:Concentration matters显示文摘Ketone bodies have emerged as central mediators of metabolic health,and multiple beneficial effects of a ketogenic diet,impacting metabolism,neuronal pathologies and,to a certain extent,tumorigenesis,have been reported both in animal models and clinical research.Ketone bodies,endogenously produced by the liver,act pleiotropically as metabolic intermediates,signaling molecules,and epigenetic modifiers.The endothelium and the vascular system are central regulators of the organism’s metabolic state and become dysfunctional in cardiovascular disease,atherosclerosis,and diabetic micro-and macrovascular complications.As physiological circulating ketone bodies can attain millimolar concentrations,the endothelium is the first-line cell lineage exposed to them.While in diabetic ketoacidosis high ketone body concentrations are detrimental to the vasculature,recent research revealed that ketone bodies in the low millimolar range may exert beneficial effects on endothelial cell(EC)functioning by modulating the EC inflammatory status,senescence,and metabolism.Here,we review the long-held evidence of detrimental cardiovascular effects of ketoacidosis as well as the more recent evidence for a positive impact of ketone bodies—at lower concentrations—on the ECs metabolism and vascular physiology and the subjacent cellular and molecular mechanisms.We also explore arising controversies in the field and discuss the importance of ketone body concentrations in relation to their effects.At low concentration,endogenously produced ketone bodies upon uptake of a ketogenic diet or supplemented ketone bodies(or their precursors)may prove beneficial to ameliorate endothelial function and,consequently,pathologies in which endothelial damage occurs. | Souad Nasser Varvara Vialichka Marta Biesiekierska Aneta Balcerczyk Luciano Pirola | 2020 | World Journal of Diabetes2020，11，12： | 4 |
| 4 | Novel endoscopic management for pancreatic pseudocyst with fistula to the common bile duct显示文摘Pancreatic pseudocyst formation is a well-known complication of pancreatitis. It represents about 75% of the cystic lesions of the pancreas and might be located within or surrounding the pancreatic tissue. Sixty percent of the occurrences resolve spontaneously and only persistent, symptomatic or complicated cysts need to be treated. Complications include infection, hemorrhage, gastric outlet obstruction, splenic infarction and rupture. The formation of fistulas to other viscera is rare and most commonly occurs within the stomach, duodenum or colon. We report a case of a patient with a pancreatic pseudocyst in communication with the common bile duct. There have been only few cases reported in the literature. We successfully managed our case by performing an endoscopicultrasound-guided drainage of the pancreatic collection and a contemporaneous stenting of the common bile duct. Performed independently, both drainages are effective, safe and well-coded and the expertise on these procedures is widespread. By our knowledge this therapeutic approach was never reported in literature but we retain this is the most correct treatment for this very rare condition. | Stefano Francesco Crinò Giuseppe Scalisi Pierluigi Consolo Doriana Varvara Antonio Bottari Sebastiano Pantè Socrate Pallio | 2014 | World Journal of Gastrointestinal Endoscopy2014，6，12： | 3 |
| 5 | In vitro evaluation of frac-ture resistance and failure mode of intemally restored endodonticallytreated maxillary incisors with differing heights of residual dentin显示文摘 | Varvara G Perinetti G Di Iorio D | 2007 | J Prosthet Dent2007，98，5： | 1 |
| 6 | Increased ability of transgenic plants expressing the bacterial enzyme ACC deaminase to accumulate Cd,Co,Cu,Ni,Pb and Zn显示文摘 | | 2000 | Journal of Biotechnology2000，81，： | 1 |
| 7 | Safety,immunogenicity and kinetics of immune response to 7-valent pneumococcal conjugate vaccine in children with idiopathic nephrotic syndrome显示文摘 | Christina DL Varvara A Andromachi M | 2011 | Vaccine2011，29，40： | 1 |
| 8 | Numerical construction of viable sets for autonomous conflict control systems显示文摘 | Nikolai B Varvara T | 2014 | Mathematics2014，，2： | 1 |
| 9 | Copper electro- deposition from sulfate electrolytes in the presence of hydroxyethylated 2-butyne-1,4-diol 显示文摘 | VARVARA S MURESAN L POPESCU I C | 2004 | Hydrometallurgy2004，75，14： | 1 |
| 10 | α2-Heremans-schmid glycoprotein(fetuin A)downregulation and its utility in inflammatory bowel disease显示文摘AIM To investigate the impact of inflammatory bowel disease (IBD) on α2-Heremans-Schmid Glycoprotein(AHSG/fetuin A) and potential associations with disease and patient characteristics.METHODS AHSG serum levels were determined in treatment-na?ve newly-diagnosed patients, 96 with ulcerative colitis(UC), 84 with Crohn's disease (CD), 62 with diarrheapredominant or mixed irritable bowel syndrome (IBS, D- and M- types) and 180 healthy controls (HC), by an enzyme linked immunosorbent assay (ELISA).All patients were followed for a minimum period of 3 years at the Gastroenterology Department of the University Hospital of Larissa, Greece. C-reactive protein(CRP), anti-glycan antibodies, anti-Saccharomyces cerevisiae mannan antibodies Ig G, anti-mannobioside carbohydrate antibodies Ig G, anti-laminariobioside carbohydrate antibodies Ig G and anti-chitobioside carbohydrate antibodies Ig A were also determined via immunonephelometry and ELISA, respectively.RESULTS The mean ± SE of serum AHSG, following adjustment for confounders, was 0.32 ± 0.02 g/L in IBD, 0.32 ± 0.03 g/L in CD and 0.34 ± 0.03 g/L in UC patients, significantly lower than in IBS patients(0.7 ± 0.018 g/L) and HC (0.71 ± 0.02 g/L) (P < 0.0001, in all cases). AHSG levels were comparable between the CD and UC groups. Based on AHSG levels IBD patients could be distinguished from HC with about 90% sensitivity and specificity. Further adjusted analysis verified the inverse association between AHSG and penetrating, as well as stricturing CD (partial correlation coefficient: -0.45 and -0.33, respectively) (P < 0.05). After adjusting for confounding factors, inverse correlations between AHSG and CRP and the need for anti-TNFα therapy or surgery, were found (partial correlation coefficients:-0.31,-0.33,-0.41, respectively, P < 0.05, in all cases). Finally, IBD individuals who were seropositive, for at least one marker, had AHSG levels falling within the two lower quartiles (OR = 2.86, 95%CI: 1.5-5.44, P < 0.001) while those with at least two serological markers positive exhibited AHSG concentrations within the lowest quartile (OR = 5.03, 95%CI: 2.07-12.21, P < 0.001), after adjusting for age, sex and smoking.CONCLUSION AHSG can be used to distinguish between IBD and IBS patients or HC while at the same time 'predicting' complicated disease behavior, need for therapy escalation and surgery. Moreover, AHSG may offer new insights into the pathogenesis of IBD, since it is involved in key processes. | Anastassios C Manolakis Gregory Christodoulidis Andreas N Kapsoritakis Panagiotis Georgoulias Elisavet K Tiaka Kostas Oikonomou Varvara J Spyros P Potamianos | 2017 | World Journal of Gastroenterology2017，23，3： | 1 |
| 11 | Increased ability of transgenic plants expression the bacterial enzyme ACC deaminase to accumulate Cd, Co, Cu, Ni, Pb and Zn显示文摘 | Varvara P G Filby B Glick B R | 2000 | J Bioteeh2000，81，： | 1 |
| 12 | Root canal treatment in mandibular canines with two roots:a report of two cases显示文摘 | D'Arcangelo C Varvara G De Fazio P | 2001 | Int Endod J2001，34，4： | 1 |
| 13 | Increased ability of transgenic plants expressing the bacterial enzyme ACC deaminase to accumulate Cd、 Co、 Cu 、Ni、 Pb and Zn 显示文摘 | | 2000 | Journal of Biotechnology2000，81，： | 1 |
| 14 | Increased ability of transgenic plants expressing the bacterial enzyme ACC dearninase to accumulate CA,Co,Cu, Ni, Pb and Zn显示文摘 | Varvara P Grichko | 2000 | Journal of Biotechnology2000，81，： | 1 |
| 15 | Protection of bronze covered with patina by innoxious organic substances 显示文摘 | Muresan L Varvara S Stupnisek- Lisac E | 2007 | Electrochim Acta2007，52，27： | 1 |
| 16 | Motivational Climate,Bellefs about the Bases of Success, and Sportsmanship Behaviors of Professional Basketball Athletes 显示文摘 | KONSTANTIONS LAPARIKIS ATHANASIOS PAPAIOANNOU VARVARA RETAKOU | 2003 | Perceptual Motor Skills2003，96，： | 1 |
| 17 | Kinetic and morphological investigation of copper electrodeposition from sulfate electrolytes in the presence of an additive based on ethoxyacetic alcohol and triethyl-benzyl-ammonium chloride 显示文摘 | Varvara S Muresan L Nicoara A | 2001 | Materials Chemistry and Physics2001，72，： | 1 |
| 18 | Protection of bronze covered with patina by innoxious organic substances显示文摘 | L Muresan S Varvara E Stupnisek-Lisac | 2007 | Electrochimica Acta2007，50，： | 1 |
| 19 | Evaluation of some non-toxic thiadiazole derivatives as bronze corrosion inhibitors in aqueous solution 显示文摘 | Varvara S Muresan L Rahmouni K | 2008 | Corros Sci2008，50，9： | 1 |
| 20 | Kinetic and morphological investigation of copper electrodeposition from sulfate electrolytes in the presence of an additive based on ethoxyacetic alcohol and triethyl-benzyl-ammonium chloride显示文摘 | Varvara S Muresan L Nicoara A | 2001 | Materials Chemistry and Physics2001，72，： | 1 |
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