A {BW12O40} hybrid decorated by Ag+ for use as a supercapacitor electrode material and photocatalyst

Through a hydrothermal method, we successfully synthesized a supramolecular compound [{Ag(phen)₂}₄{Ag(phen)}₂(H₂BW₁₂O₄₀)₂]. The as-synthesized material exhibited excellent supercapacitive and photocatalytic performances.

Optimal expression and purification of sapelovirus A structural protein VP1, and its immunogenicity in mice

Sapelovirus A (SV-A) is a positive-sense single-stranded RNA virus which is associated with acute diarrhea, pneumonia and reproductive disorders. The virus capsid is composed of four proteins, and the functions of the structural proteins are unclear. In this study, we expressed SV-A structural protein VP1 and studied its antigenicity and immunogenicity. SDS-PAGE analysis revealed that the target gene was expressed at high levels at 0.6 mM concentration of IPTG for 24 h. The mouse polyclonal antibody against SV-A VP1 protein was produced and reached a high antiserum titer (1: 2,048,000). Immunized mice sera with the recombinant SV-A VP1 protein showed specific recognition of purified VP1 protein by western blot assay and could recognize native SV-A VP1 protein in PK-15 cells infected with SV-A by indirect immunofluorescence assay. The successfully purified recombinant protein was able to preserve its antigenic determinants and the generated mouse anti-SV-A VP1 antibodies could recognize native SV-A, which may have the potential to be used to detect SV-A infection in pigs.

[Clinical observation of flupentixol and melitracen combined with specific immunotherapy for treatment of allergic rhinitis patients with anxiety and depression]

Objective:To explore the clinical effects of Flupentixol/Melitracencombined with specific immunotherapy in allergic rhinitis patients with anxiety and depression. Method:Totally ninetynine moderate to severe persistent allergic rhinitis patients with anxiety and depression from October 2014 to Sepetember 2015 were randomly divided into two groups: 45 patients in experimental group (Flupentixol/Melitracen 10.5 mg，QD,treatment last 4 months)and 44 patients in control group.All patients were treated with specific immunotherapy for 1 years. The nasal symptoms score, mini Rhinoconjunctivitis Quality of life questionnaire(MiniRQLQ), Medication score, SAS and SDS score and the clinical curative effect were observed before treatment, after 4 months or one year treatment. The drug reactions were also recorded. Result:The VAS scores, MiniRQLQ scores, medication scores, SAS and SDS scores of patients in two groups who were treated after 4 months and 1 year were significantly reduced than that of patients before treatment.The differences were statistically significant(P<0.05).Compared with the control group, nasal symptom scores, MiniRQLQ scores, medication scores, SAS and SDS scores in experimental group were decreased after 4 month or 1 year treatment(P<0.05).After 4 months of treatment, the total effective rate of the experimental group was 84.4%, while the control group was 56.8%.After 1 years of treatment, the experimental group excellence rate was 57.8%, while the control group was 22.7%.The differences were statistically significant(P<0.05). During the course of treatment, there were thirteen cases of mild adverse reactionsin experimental group (17.7%) and control group(11.4%). There was no significant differences(P>0.05). Conclusion:Flupentixol and melitracen combined with specific immunotherapy could sifnificantlly relieve clinical symptom, quality of life and mental depression.is a safe and reliable therapeutic regimen for further improving clinical symptoms,quality of life,mental statusand the clinical efficacy in moderate to severe persistent with anxiety anddepression.

Dietary calcium supplementation increases apoptosis in the distal murine colonic epithelium

BACKGROUND

Increased dietary calcium might reduce colorectal cancer risk, possibly by reduction of colonic epithelial hyperproliferation, but not all studies have demonstrated this. Little is known about the effects of calcium on colonic apoptosis.

AIM

To quantify the effects of increasing calcium on apoptosis and cell proliferation in normal murine colonic crypt epithelium.

METHODS

Twenty one day old male C57B1/6 mice were fed either control AIN-76 diet (0.5% calcium wt/wt; n = 10) or the same supplemented with calcium carbonate (1.0% calcium; n = 10) for 12 weeks. Apoptotic cells in proximal and distal segments were counted and expressed as an apoptotic index (AI: frequency of apoptosis/100 longitudinal crypts). The bromodeoxyuridine (BrdU) labelling index was also determined. Differences were analysed by the student's t test.

RESULTS

In control animals, the AI was significantly higher in the caecum/proximal colon (mean, 28.6; SEM, 2.0) compared with the distal colon (mean, 19.9; SEM, 1.8; p = 0.004). In the calcium treated group, the AI in the caecum/proximal colon (mean, 30.6; SEM, 1.7) was similar to controls (p = 0.71) but the AI in the distal colon was significantly greater (mean, 32.6; SEM, 1.8; p = 0.001) than in control mice and was raised to values similar to those in the proximal colon. Calcium was also associated with reduced crypt cellularity and, in the proximal colon, a downward shift in the crypt position at which apoptosis occurred. There were no significant differences in the BrdU labelling index between groups or between proximal and distal colonic segments in each group.

CONCLUSIONS

Increased dietary calcium is associated with the induction of apoptosis in normal mouse distal colonic epithelium without affecting cell proliferation. This might contribute to its putative chemopreventive role in colorectal carcinogenesis. Whether this effect is direct or indirect requires further study.

[Study on flavonoids in seeds of Hovenia dulcis]

Four flavanoids were isolated from the seed of Hovenia dulcis Thunb. On the basis of physicochemical properties and spectroscopic analysis, their structures were identified as dihydrokaempferol (I), quercetin (II), (+)-3,3',5',5,7-pentahydroflavanone (III) and (+)-dihydromyricetin (IV). Among them, III was a new compound; I and IV were first isolated from genus Hovenis.