Interfacial dipole engineering in all-inorganic perovskite solar cells.

Severe nonradiative recombination and energy level mismatch in perovskite solar cells (PSCs) are key factors affecting efficiency. Here, we report an effective strategy for surface passivation and interfacial dipole engineering of perovskite films. By precisely introducing electron-withdrawing and electron-donating groups on 7-azaindole, we have effectively controlled the passivation ability of N atoms and the polarity of the interfacial dipole, thereby regulating the perovskite surface's work function and obtaining the optimal energy level matching. This strategy yields an impressive efficiency of 10.76% for the CsPbBr3 PSC and exceptional stability.

Proneural proteins Achaete and Scute associate with nuclear actin to promote formation of external sensory organs.

Basic helix-loop-helix (bHLH) proneural proteins promote neurogenesis through transcriptional regulation. Although much is known about the tissue-specific regulation of proneural gene expression, how proneural proteins interact with transcriptional machinery to activate downstream target genes is less clear. Drosophila proneural proteins Achaete (Ac) and Scute (Sc) induce external sensory organ formation by activating neural precursor gene expression. Through co-immunoprecipitation and mass spectrometric analyses, we found that nuclear but not cytoplasmic actin associated with the Ac and Sc proteins in Drosophila S2 cells. Daughterless (Da), the common heterodimeric partner of Drosophila bHLH proteins, was observed to associate with nuclear actin through proneural proteins. A yeast two-hybrid assay revealed that the binding specificity between actin and Ac or Sc was conserved in yeast nuclei without the presence of additional Drosophila factors. We further show that actin is required in external sensory organ formation. Reduction in actin gene activity impaired proneural-protein-dependent expression of the neural precursor genes, as well as formation of neural precursors. Furthermore, increased nuclear actin levels, obtained by expression of nucleus-localized actin, elevated Ac-Da-dependent gene transcription as well as Ac-mediated external sensory organ formation. Taken together, our in vivo and in vitro observations suggest a novel link for actin in proneural-protein-mediated transcriptional activation and neural precursor differentiation.

Smurf-mediated differential proteolysis generates dynamic BMP signaling in germline stem cells during Drosophila testis development.

Germline stem cells (GSCs) produce gametes throughout the reproductive life of many animals, and intensive studies have revealed critical roles of BMP signaling to maintain GSC self-renewal in Drospophila adult gonads. Here, we show that BMP signaling is downregulated as testes develop and this regulation controls testis growth, stem cell number, and the number of spermatogonia divisions. Phosphorylated Mad (pMad), the activated Drosophila Smad in germ cells, was restricted from anterior germ cells to GSCs and hub-proximal cells during early larval development. pMad levels in GSCs were then dramatically downregulated from early third larval instar (L3) to late L3, and maintained at low levels in pupal and adult GSCs. The spatial restriction and temporal down-regulation of pMad, reflecting the germ cell response to BMP signaling activity, required action in germ cells of E3 ligase activity of HECT domain protein Smurf. Analyses of Smurf mutant testes and dosage-dependent genetic interaction between Smurf and mad indicated that pMad downregulation was required for both the normal decrease in stem cell number during testis maturation in the pupal stage, and for normal limit of four rounds of spermatogonia cell division for control of germ cell numbers and testis size. Smurf protein was expressed at a constant low level in GSCs and spermatogonia during development. Rescue experiments showed that expression of exogenous Smurf protein in early germ cells promoted pMad downregulation in GSCs in a stage-dependent but concentration-independent manner, suggesting that the competence of Smurf to attenuate response to BMP signaling may be regulated during development. Taken together, our work reveals a critical role for differential attenuation of the response to BMP signaling in GSCs and early germ cells for control of germ cell number and gonad growth during development.

[Effect of wuhuang tangkangling on cytokine in patients with type 2 diabetes mellitus].

OBJECTIVE: To investigate the effects of Wuhuang Tangkangling on tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6) and high-sensitivity C-reactive protein (hs-CRP) in serum of patients with type 2 diabetes mellitus (T2DM). METHOD: One hundred cases of type 2 diabetes mellitus patients were randomly divided into two groups. The control group was treated with pioglitazone (15 mg x d(-1)) orally once a day in the morning, combined with insulin subcutaneous injection based on blood glucose level. The treatment group was treated with decoction of Wuhuang Tangkang Ling daily, 8 weeks as a course. TNF-alpha, IL-6, hs-CRP, fasting blood glucose (FBG) and postprandial blood glucose (PBG) were tested for two groups of patients before and after the treatment And other 50 healthy cases were tested for comparison. RESULT: Before treatment, the level of cytokine, FBG and PBG in the serum of patients with T2DM were significantly higher than healthy cases (P < 0.01). In treatment group, difference between before and after the treatment had statistical significance (P < 0.01); after treatment, difference between treatment group and control group had statistical significance (P < 0.01). CONCLUSION: Wuhuang Tangkangling could significantly decrease the level of TNF-alpha, IL-6, hs-CRP, FBG and PBG in patients with T2DM, and could decrease blood glucose, anti inflammatory, and improve insulin resistance. According to testing these cytokines, a new criteria for evaluating the progress of T2DM and the treatment may be approached.

[Clinical study of decoction of invigorating Qi and clearing lung combined standardized myrtol on acute exacerbation of chronic obstructive pulmonary disease (AECOPD)].

OBJECTIVE: To investigate the clinical effect of decoction of invigorating Qi and clearing lung combined standardized myrtol on acute exacerbation of chronic obstructive pulmonary disease (AECOPD). METHOD: Ninety and eight patients with AECOPD patients were randomly divided into the treatment group and the control group, with 50 cases and 48 cases respectively. All the patients were given the conventional treatment. The control group was treated by standardized myrtol with 3 times a day, 300 mg each time taken orally. The treatment group was given decoction of invigorating Qi and clearing lung with 2 times a day, one dose per day taken orally, combined standardized myrtol (usage as above). After Two weeks, the scores of clinical symptom, blood gas analysis and pulmonary function were observed. RESULT: Both FEV1 and FEV1% were raised in the two groups after treating. And the treatment group was significantly higher than control group (P < 0.01). PaO2 and PaO2/FiO2 rose, with PaCO2 decreased in the two groups (P < 0.01). PaO2 and PaO2/FiO2 were significantly improved, and PaCO2 was significantly decreased in the treatment group compared to the control group (P < 0.01). In the clinical curative effect comparison aspects, clinical control rates were 42.0% in treatment group and 20.83% in control group respectively, with significant difference between the two groups (P < 0.05). Significant efficiency is 86.0% in treatment group and 52.08% in control group respectively, with significant difference between the two groups (P < 0.01). CONCLUSION: Decoction of invigorating Qi and clearing lung combined with standardized myrtol can obviously improve clinical symptom, blood gas an analysis and pulmonary function in patients with AECOPD.

[Effect of decoction of turtle shell for anti-fibrosis combined with stronger neo-minophagen C on indices of hepatic fibrosis in chronic hepatitis B].

OBJECTIVE: To evaluate the effect of decoction of turtle shell for anti-fibrosis combined with stronger neo-minophagen C on the indices of hepatic fibrosis in chronic hepatitis B. METHOD: The 94 cases of chronic viral hepatitis B patients were randomly divided into two groups. The treatment group was treated with stronger neo-minophagen C 100 mL dissolved in 10% dextrose 250 ml once a day intravenously, combined with decoction of turtle shell for anti-fibrosis one powder daily. And the control group was treated with stronger neo-minophagen C alone, 3 months as a course. Liver fibrosis indexes and liver function index were tested for two groups of patients before and after the treatment. RESULT: Both the difference of liver fibrosis indexes between the treatment group and the control group and before and after the treatment in the treatment group had statistical significance (P < 0.01). Both the difference of liver function index between the treatment group and the control group and before and after the treatment in the treatment group had statistical significance (P < 0.01). The basic cure rate and total effective rate were 40% and 84.0% in the treatment group and 27.27% and 86.18% in the control group respectively with significant difference. The treatment group was superior to control group in the mean size of diameter of portal vein and the thickness of spleen (P < 0.01). CONCLUSION: Decoction of turtle shell for anti-fibrosis combined with stronger neo-minophagen C could significantly improve the clinical efficacy and the liver fibrosis indexes and liver function index in chronic hepatitis B.

[Experimental study on effect of dahuang zhechong wan combined with adefovir dipivoxil in preventing hepatic fibrosis in patients with chronic hepatitis B].

OBJECTIVE: To study the changes of experimental markers of hepatic fibrosis in patients with chronic hepatitis B treated by Dahuang Zhechong Wan combined with adefovir dipivoxil. METHOD: Ninty and four cases of chronic viral hepatitis B patients were randomly divided into two groups. The treatment group (50 cases) was orally given 10 mg of adefovir dipivoxil once a day, 1 Wan each time, combined with Dahuang Zhechong Wan, 3 times a day, 1 Wan each time. And the control group (44 cases) was treated with adefovir dipivoxil alone, 6 months as a course. RESULT: Both the difference of liver fibrosis indexes between the treatment group and the control group and before and after the treatment in the treatment group had statistical significance (P < 0.01 or P < 0.05). Both the difference of experimental markers such as ALT, AST, GGT, TBIL between the treatment group and the control group and before and after the treatment in the treatment group had statistical significance (P < 0.01). CONCLUSION: Dahuang Zhechong Wan combined with adefovir dipivoxil could prevent hepatic fibrosis in patients with chronic hepatitis B, reduce the incidence of liver cirrhosis, improve life quality and prognosis.

[Clinical observation of lower extremity deep venous hrombosis (DVT) postoperative fracture treated by Maixuekang capsule and low molecular heparin calcium (Subilin)].

OBJECTIVE: To observe the clinical curative effects of lower extremity deep venous thrombosis (DVT) postoperative fracture treated by maixuekang capsule and low molecular heparin calcium (Subilin). METHOD: From Feb 2008 to Apr 2010, 214 cases of lower extremity DVT postoperative fracture were randomly divided into experimental group and control group. The 107 cases of them were treated by maixuekang capsule based on the comprehensive treatment. RESULT: The 89 cases were cured and improved in the observation group, but 18 cases were ineffectiveness. The 66 cases were cured and improved in the control group, but 41 cases were ineffectiveness. Maixuekang capsule group had 83. 18% (89/107) total effective rate and 61.68% (66/107) total effective rate in the control group. There was significant difference between the two groups (P < 0.05). After the treatment, the perimeter between the suffered limb and the healthy one was significantly reduced, the blood rheology examination had been improved significantly. There was also significant difference between the two groups (P < 0.05). CONCLUSION: Maixuekang capsule for lower extremity deep vein thrombasis has good effect It has both thrombolytic and anticoagulant effects for lower extremity DVT postoperative fracture treated by maixuekang capsule and low molecular heparin calcium (Subilin). It's a recommended treatment.

[Sheshiliuhuang decoction on cytokines in patients with urinary tract infection].

OBJECTIVE: To investigate the therapeutic effects of Sheshiliuhuang decoction on clinical outcomes and cytokines in patients with urinary tract infection (UTI). METHOD: Ninety-two (92) patients were selected and randomly divided into 2 groups, the treatment group (n = 47) administered with Sheshiliuhuang decoction, one prescription, 2 times a day, while patients in the control group (n = 45) were given Sanjin pills, 3 pills a time, 3 times a day. The treatment lasted for 7 days. Clinical outcomes and serum levels of TNF-alpha, IL-6, IL-8 in both groups were examined before and after the treatment. RESULT: The clinical effective rate was 93.62% in the treatment group and 88.22% the control group, indicating a significant difference of P < 0.05. Before the treatment, the serum levels of TNF-alpha, IL-6, IL-8 of treatment group were significantly higher than those in the control group (P < 0.05). At the end of the treatment, serum levels of IL-6 and TNF-alpha in the treatment group were significantly decreased compared with the before treatment (P < 0.01) and those did in the control group (P < 0.01). CONCLUSION: Serum cytokines of IL-6, IL-8, and TNF-alpha were significantly increased in patients with UTI. Sheshiliuhuang decoction, with the mechanisms of regulating IL-6, IL-8, TNF-alpha, is an effective agent in patients with UTI.

[Effects of Sanwushaoxie decoction on IL-18, TNF-alpha, IL-4 and IL-10 in patients with rheumatoid arthritis].

OBJECTIVE: To investigate the therapeutic effects of Sanwushaoxie decoction on alternations of serum cytokines in patients with rheumatoid arthritis (RA). METHOD: Sixty-three (63) RA patients were selected and randomly divided into 2 groups, with the treatment group administered with Sanwushaoxie decoction, one prescription, 2 times a day, while patients in the control group were given Common Threewingnut Root polyglycoside 20 mg a time, 3 times a day. The treatment was lasted for 60 days. Serum concentrations of IL-6, TNF-alpha, IL-4, IL-10 were observed during the treatment. RESULT: The clinical effecacy and the experimental indexes were significantly improved in the treatment group than those did in the control group (P < 0.01, P < 0.05). There were significant differences of serum levels of 4 cytokines within the treatment group before and after the treatment (P < 0.01, P < 0.05). The serum levels of IL-4, IL-10 were significantly increased in treatment group compared with those did in the control group (P < 0.01). CONCLUSION: Sanwushaoxie decoction is an effective agent in regulating cytokines, improving symptoms and experimental indexes in patients with RA.