Publications by authors named "Ya-Li Sun"

11 Publications

  • Page 1 of 1

UV-Resistant and Thermally Stable Superhydrophobic CeO Nanotubes with High Water Adhesion.

Small 2018 Jul 3;14(27):e1801040. Epub 2018 Jun 3.

College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.

A novel type of sticky superhydrophobic cerium dioxide (CeO ) nanotube material is prepared by hydrothermal treatment without any chemical modification. A water droplet on the material surface shows a static water contact angle of about 157° but the water droplet is pinned on the material surface even when the material surface is turned upside down. Interestingly, the as-prepared CeO nanotube material displays durable superhydrophobicity and enhanced adhesion to water under ultraviolet (UV) light irradiation. Importantly, this change in water adhesion can be reversed by heat treatment to restore the original adhesive value of 20 µL. Further, the maximum volume of the water droplet adhered on the material surface of CeO nanotubes can be regulated without loss of superhydrophobicity during the heating treatment/UV-irradiation cycling. Meanwhile, the superhydrophobic CeO nanotube material shows remarkable thermal stability even at temperatures as high as 450 °C, long-term durability in chemical environment, and air-storage and good resistance to oily contaminant. Finally, the potential application in no-loss water transportation of this sticky superhydrophobic CeO material is demonstrated.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1002/smll.201801040DOI Listing
July 2018

Correlation between Serum Calcineurin Activity and Left Ventricular Hypertrophy in Hypertensive Patients and Its Clinical Significance.

Cardiology 2018;139(2):124-131. Epub 2018 Jan 13.

Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China.

Objective: The aim of this study is to investigate the correlation between calcineurin (CaN) and hypertension with left ventricular hypertrophy (HLVH) and to evaluate its potential clinical significance.

Design: The study involved 160 patients diagnosed with hypertension and 42 controls. Based on the exclusion criteria, 42 were not eligible for this study. The remaining 118 hypertensive patients were categorized into 2 subgroups based on left ventricular mass index and relative ventricular wall thickness: a normal model subgroup with hypertension (HNM) and an HLVH subgroup. Serum CaN levels were determined by enzyme-linked immunosorbent assay, while serum CaN activity was determined by malachite green colorimetric assay.

Results: Among the HNM and HLVH subgroups, a positive correlation was demonstrated between serum CaN activity, but not serum CaN level, and HLVH. Moreover, the HLVH subgroup displayed a remarkable increase in the levels of brain natriuretic peptide, cystatin C, urinary albumin/creatinine ratio, and left atrium diameter compared to the HNM subgroup and controls.

Conclusion: There was a positive correlation between serum CaN activity and LVH in hypertensive patients. Activated CaN could play an important role in the pathophysiologic mechanism of HLVH. Serum CaN activity could be a clinically useful diagnostic and prognostic biomarker for LVH.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1159/000481280DOI Listing
October 2018

[Effects of different LED light qualities on photosynthetic characteristics, fruit production and quality of strawberry].

Ying Yong Sheng Tai Xue Bao 2015 Jun;26(6):1743-50

Taking 'Miaoxiang No.7' strawberry as material, full red light, full blue light, full yellow light, full white light, red/blue/yellow (7/2/1), red/blue (7/2) light generated by light emitting diode (LED) was applied to accurately modulate with white light generated as control. The indicators of photosynthetic and fluorescence parameters, pigment content, fruit production and quality, root activity were investigated. The effects of light quality under the light intensity (500 µmol · m(-2) · s(-1)) on the photosynthetic characteristic, fruit production and quality of strawberry were studied. The results showed that the red light could increase photosynthetic parameters (Pn, Tr), while blue light had inhibitory effect. Intercellular CO2 concentration (Ci) and conductance (g(s)) were the highest under blue light. The fluorescence parameters were significantly affected by light quality, Fo, Fm and Φ PS II the highest under red light, but values of the maximal photochemical of PS II (Fv/Fm), Fv/Fo and Fm/Fo highest under red/blue/yellow (7/2/1). In addition, the soluble solids content and vitamin C were highest under red light, the blue light could increase protein and titratable acid, sugar-acid ratio was the highest under red/blue/yellow (7/2/1). Comprehensive analysis indicated that red/blue/yellow (7/2/1) was more beneficial to the increase of pigment contents of leaves, fruit production and some qualities of strawberry.
View Article and Find Full Text PDF

Download full-text PDF

Source
June 2015

[Effect of cadmium stress on physiological characteristics of garlic seedlings and the alleviation effects of exogenous calcium].

Ying Yong Sheng Tai Xue Bao 2015 Apr;26(4):1193-8

In the experiment, the effects of exogenous cadmium (Cd2+) and calcium (Ca2+) in nutrient solution on growth, photosynthetic characteristics, enzymes activities, main mineral elements absorption of garlic seedlings were studied. The results showed that cadmium could obviously inhibit the growth of garlic seedlings, decrease the pigment contents and photosynthetic parameters (P(n), E, g(s)) of leaves, reduced the enzymes (SOD, POD, CAT) activities and increase the MDA content of leaves, and also could reduce the N, P, K, Ca, Mg contents and increase the Cd content of roots. The growth was promoted after adding exogenous calcium to garlic seedlings under cadmium stress, which reflected that the morphological indexes were increased at first and then decreased with the increase of exogenous calcium concentrations, and were maximized when the exogenous calcium was 2 or 3 mmol x L(-1). At the same time, the pigment contents and photosynthetic parameters (P(n), E, g(s)) of leaves showed a similar tendency with the morphological indexes, and they were the highest when the exogenous calcium was 2 or 3 mmol x L(-1). In addition, adding exogenous calcium to garlic seedlings under cadmium stress enhanced the enzymes (SOD, POD, CAT) activities and decreased the MDA content of leaves, also added the N, P, K, Ca, Mg contents and reduced the Cd content of roots, and the effect was best when the exogenous calcium concentration was 2 or 3 mmol x L(-1).
View Article and Find Full Text PDF

Download full-text PDF

Source
April 2015

Green tea polyphenol epigallocatechin-3-gallate enhance glycogen synthesis and inhibit lipogenesis in hepatocytes.

Biomed Res Int 2013 27;2013:920128. Epub 2013 Aug 27.

School of Medical and Molecular Biosciences, University of Technology, Sydney, P.O. Box 123, NSW 2007, Australia.

The beneficial effects of green tea polyphenols (GTP) against metabolic syndrome and type 2 diabetes by suppressing appetite and nutrient absorption have been well reported. However the direct effects and mechanisms of GTP on glucose and lipid metabolism remain to be elucidated. Since the liver is an important organ involved in glucose and lipid metabolism, we examined the effects and mechanisms of GTP on glycogen synthesis and lipogenesis in HepG2 cells. Concentrations of GTP containing 68% naturally occurring (-)-epigallocatechin-3-gallate (EGCG) were incubated in HepG2 cells with high glucose (30 mM) under 100 nM of insulin stimulation for 24 h. GTP enhanced glycogen synthesis in a dose-dependent manner. 10  μM of EGCG significantly increased glycogen synthesis by 2fold (P < 0.05) compared with insulin alone. Western blotting revealed that phosphorylation of Ser9 glycogen synthase kinase 3 β and Ser641 glycogen synthase was significantly increased in GTP-treated HepG2 cells compared with nontreated cells. 10  μM of EGCG also significantly inhibited lipogenesis (P < 0.01). We further demonstrated that this mechanism involves enhanced expression of phosphorylated AMP-activated protein kinase α and acetyl-CoA carboxylase in HepG2 cells. Our results showed that GTP is capable of enhancing insulin-mediated glucose and lipid metabolism by regulating enzymes involved in glycogen synthesis and lipogenesis.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1155/2013/920128DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3771263PMC
June 2014

[Ring chromosome 22 in a case].

Zhonghua Er Ke Za Zhi 2013 Apr;51(4):308-9

View Article and Find Full Text PDF

Download full-text PDF

Source
April 2013

[Genetic analysis of fuzzless in cotton germplasm].

Yi Chuan 2012 Aug;34(8):1073-8

Cotton Research Institute, Chinese Academy of Agricultural Science, Anyang, China.

The present study was conducted to evaluate genetic analysis of fuzzless seed trait in cotton. One hundred and two upland cotton (G. hirsutum) and eighty-five island cotton (G. barbadense) were used to cross with the same lines, TM-1 (G. hirsutum) and Xinhai 13 (G. barbadense), respectively. Two different F1 populations obtained were assessed to specify the dominant and recessive inheritance of fiber fuzziness in these lines. Three F1 populations (Kuguangzi × TM-1, Luwuxu × TM-1, and SA65 × TM-1) displaying recessive fiber fuzziness inheritance were selected to construct the F2 population for a further genetic study of fuzzless seed trait. The results of this study indicated that (1) the same materials showed different quantities of fuzzy fiber in different environments. Less fuzzy fiber was found in Xinjian and Hainan compared to Anyang. Thus, the quantity of fuzzy cotton seed depends on ecological environment. (2) In upland cotton, the inheritance of fiber fuzziness was dominant for 26 accessions (25.49%), incompletely dominant for 8 accessions (7.84%), and recessive for 22 accessions (21.57%). The inheritance of fiber fuzziness in island cotton was dominant for 5 accessions (5.88%), incompletely dominant for 16 accessions (18.82%), and recessive for 9 accessions (10.59%). Analysis of F2 population indicated that the fiber fuzziness of Kuguangzi was controlled by two recessive complementary effect alleles. The fiber fuzziness of Luwuxu was controlled by two recessive additive effect alleles, and a single recessive gene controlled the same trait for SA65. Fiber fuzziness evaluation in cotton germplasm provides the genetic and basic information for cotton fiber development study and breeding.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.3724/sp.j.1005.2012.01073DOI Listing
August 2012

[Distribution characteristics of polycyclic aromatic hydrocarbons and black carbon in road dusts from typical cities of China and India].

Huan Jing Ke Xue 2012 Apr;33(4):1204-8

College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.

In order to investigate the distribution characteristics of polycyclic aromatic hydrocarbons (PAHs) and black carbon (BC) in road dusts in typical cities of Beijing, Shanghai, Guangzhou and Wuhan in China and Kolcata in India, samples were collected in urban roads during Dec., 2007 to Feb., 2009. The total 16 PAHs concentrations in metro cities from China were 2.30-22.2 microg x g(-1), which was dominated by FLA, PHE, PYR, CHR, BBF and BGP. PAHs contents were in the range of 4.85-30.5 microg x g(-1) in Kolcata from India, which was dominated by NAP. Higher levels of BC in Chinese cities than India city were likely due to different power structures and consumes. The correlation between PAHs and BC showed different characteristics in different city, which might be reflected diverse sources. Diagnostic ratios demonstrated that the main source of PAHs was from the emission of vehicle, and coal combustion is another possible source.
View Article and Find Full Text PDF

Download full-text PDF

Source
April 2012

[Removing nitrate-nitrogen from wastewater using rotten wood as carbon source].

Huan Jing Ke Xue 2010 Jun;31(6):1494-8

Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.

In this research, COD release of rotten wood was studied and rotten wood was investigated as the sole carbon source as well as biofilm carrier to remove nitrate from wastewater in up-flow laboratory reactor. The experimental results indicated that rotten wood could release carbon source continuously. COD released of rotten wood inoculated with humus was 2. 3 times higher than that of sterilized rotten wood, and VFA was 5 times. The research of denitrification was carried out at 25 degrees +/- 1 degrees C, 30 mg/L of initial NO3(-) -N concentration and 12 h of hydraulic retention time. Nitrate removal efficiency was above 80%. A time-dependent decrease in nitrate removal efficiency was observed after 46 days of operation. The results showed that rotten wood could be used as an effective carbon source for denitrification.
View Article and Find Full Text PDF

Download full-text PDF

Source
June 2010

Immunohistochemical detection of aquaporin expression in eutopic and ectopic endometria from women with endometriomas.

Fertil Steril 2010 Sep;94(4):1229-1234

Department of Gynecology and Obstetrics, Women's Hospital, Zhejiang University Medical College, Zhejiang Province, Hangzhou City, People's Republic of China. Electronic address:

Objective: To investigate the expression of aquaporin (AQP) in eutopic and ectopic endometrial tissues from women with endometriomas.

Design: Controlled laboratory research.

Setting: Hospital-based unit for gynecology and obstetrics and research laboratories.

Patient(s): Premenopausal women undergoing laparoscopy for endometriomas.

Intervention(s): Endometrial biopsy samples obtained from 70 women with endometriomas.

Main Outcome Measure(s): Semiquantitative analysis by immunohistochemistry.

Result(s): Aquaporins 2, 5, and 8 were mainly located in luminal and glandular epithelia. The frequency of positive immunostaining for aquaporins 2, 5, and 8 decreased in ectopic compared with eutopic endometria. Aquaporins 2, 5, and 8 were found at a low frequency in the endometria in early proliferative phases but at a higher frequency in late proliferative and secretory phases. There were no significant differences in the menstrual cycle of the proliferative phase and secretory phase in the two groups.

Conclusion(s): Aquaporins 2, 5, and 8 were expressed with greater frequency in eutopic endometrial cells than inectopic endometrial cells, suggesting that eutopic endometrial cells have stronger migration activity than ectopic endometrial cells in women with endometriosis.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.fertnstert.2009.08.053DOI Listing
September 2010

[Study on the expression, purification and the anti-endotoxin activity of human endotoxin binding peptide and its mutant].

Zhonghua Shao Shang Za Zhi 2006 Aug;22(4):291-5

Institute of Pathology Research, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China.

Objective: To express endotoxin binding peptide and its mutant in E coli DH5alpha and detect the antiendotoxin activity of the purified peptides.

Methods: (1 ) E coli DH5at containing pinpointXa3-EBP and pinpointXa3-mEBP was activated by IPTG to express biotin fusion protein. The fusion proteins were purified, and then digested by factor Xa for isolation of EBP and mEBP. The target peptide was purified with affinity chromatography and reversed-phase HPLC. Sequences of 10 amino acids at N-terminal were used for identification of mEBP. (2) PBMCs were isolated from blood of normal people, and they were stimulated with 5 mg/L FITC-LPS plus 2.0,5. 0 and 12. 5 mg/L EBP or mEBP. Then the mean fluorescent intensity was detected. PBMC was also stimulated with 1 mg/L LPS plus 2.0, 5.0 and 12.5 mg/L EBP or mEBP for 5 hours for the detection of the TNF-alpha and IL-6 level in the supernatant. (3) Thirty-five Kunming mice were randomized into normal control ( n = 5, with intraperitoneal injection of 0. 2 ml isotonic saline) , model group(n = 5, with intraperitoneal injection of LPS and 20% TBSA full-thickness burns), and treatment group (n = 15, with intraperitoneal injection of 5 mg/kg PMB or 10 mg/kg EBP or mEBP after burns). The serum contents of TNF-a and IL-6, and TNF-alpha mRNA level in hepatic tissue in each group were determined 6 hours after treatment.

Results: ( 1 ) EBP and mEBP were obtained after Xa digestion of biotin fusion protein, with purity reaching above 98% . The sequence of 10 amino acid at N-terminal was in accord with what expected. (2) The fluorescent intensity was decreased followed by an increase in mEBP or EBP concentration. Compared with normal PMBC, IL-6 and TNF-alpha level in the supernatant were obviously lowered in 1 mg/L LPS + 12.5 mg/L EBP group and I mg/L LPS +2. O0 , 5. 0, 12. 5 mg/L mEBP groups ( P < 0.01). (3) The serum level of IL-6 and TNF-ca in the therapeutic groups were obviously lower than that in model group ( P < 0.01 ) , and the levels of these cytokines were significantly lower in 10 mg/kg mEBP group than that in 10 mg/kg EBP group ( P <0. 01) , but they were similar to that in 5 mg/kg PMB treatment group ( P >0.05). (4) Relative optical density of TNF-alpha. mRNA in control, model, 10 mg/kg mEBP, 10 mg/kg EBP and 5 mg/kg PMB groups was 0.25, 0.93, 0.51 , 0.77 and 0.43, respectively.

Conclusion: Endotoxin binding peptides can be obtained by procaryon expression. Both EBP and mEBP have anti-LPS activity, but mEBP is more effective.
View Article and Find Full Text PDF

Download full-text PDF

Source
August 2006
-->