Fire needling stripping after local anesthesia for verruca vulgaris: a multi-center randomized controlled trial / 中国针灸

OBJECTIVE@#To compare the clinical therapeutic effect of fire needling stripping after local anesthesia, simple fire needling and liquid nitrogen cryotherapy on verruca vulgaris.@*METHODS@#A total of 900 patients with verruca vulgaris were randomized into a fire needling stripping group (300 cases, 2 cases dropped off), a fire needling group (300 cases, 4 cases dropped off) and a liquid nitrogen cryotherapy group (300 cases, 5 cases dropped off). After local anesthesia of compound lidocaine cream, fire needling therapy was adopted, and the necrotic tissue of verruca was stripped in the fire needling stripping group. Simple fire needling therapy was adopted in the fire needling group, without local anesthesia and stripping. Liquid nitrogen cryotherapy was adopted in the liquid nitrogen cryotherapy group. The treatment was given once a week, and totally 3 weeks were required in the 3 groups. The skin lesion scores of number, area, thickness, color, pruritus, isomorphism and the level of T lymphocyte (CD@*RESULTS@#Compared before treatment, the skin lesion scores were decreased (@*CONCLUSION@#Fire needling stripping after local anesthesia can effectively treat the verruca vulgaris, improve the skin lesion and immunity, its therapeutic effect is superior to simple fire needling and liquid nitrogen cryotherapy.

Lipoxin A4 inhibits lipopolysaccharide-induced production of inflammatory cytokines in keratinocytes by up-regulating SOCS2 and down-regulating TRAF6 / 华中科技大学学报（医学）（英德文版）

Liopxin A4 (LXA4) is considered to be a crucial modulator in the inflammatory responses. In the present study, we aimed to study the effect of LXA4 on the inflammatory cytokines production induced by lipopolysaccharide (LPS) and the possible mechanism in normal human epidermal keratinocytes (NHEKs). NHEKs were isolated and cultured. The expression of toll-like receptor 4 (TLR4), LXA4 receptor (ALXR) and aryl hydrocarbon receptor (AhR) in NHEKs was detected by reverse transcription polymerase chain reaction (RT-PCR). The mRNA and protein levels of tumor necrosis factor-alpha (TNF-α) and interleukin-1β (IL-1β) were determined in NHEKs stimulated by LPS (10 μg/mL) with or without preincubation with LXA4 (100 nmol/L) for 30 min by real-time quantitative PCR (real-time qPCR) and enzyme-linked immunosorbent assay (ELISA), respectively. The expression levels of tumor necrosis factor receptor-associated factor 6 (TRAF6) and suppressors of cytokine signaling 2 (SOCS2) mRNAs and proteins, and nuclear translocation of NF-kB-p65 were measured by real-time qPCR and Western blotting, respectively. The results showed that NHEKs expressed TLR4, ALXR and AhR. LXA4 significantly inhibited the mRNA and protein expression levels of TNF-α, IL-1β and TRAF6 induced by LPS in NHEKs, and LXA4 obviously increased the expression of SOCS2 at mRNA and protein levels. The nuclear NF-kB-p65 protein expression induced by LPS was inhibited after preincubation with LXA4 in NHEKs. It was concluded that LXA4 inhibits the LPS-induced production of TNF-α and IL-1β in NHEKs by up-regulating SOCS2 and down-regulating TRAF6.

Lipoxin A4 inhibits lipopolysaccharide-induced production of inflammatory cytokines in keratinocytes by up-regulating SOCS2 and down-regulating TRAF6 / 华中科技大学学报（医学）（英德文版）

Liopxin A4 (LXA4) is considered to be a crucial modulator in the inflammatory responses. In the present study, we aimed to study the effect of LXA4 on the inflammatory cytokines production induced by lipopolysaccharide (LPS) and the possible mechanism in normal human epidermal keratinocytes (NHEKs). NHEKs were isolated and cultured. The expression of toll-like receptor 4 (TLR4), LXA4 receptor (ALXR) and aryl hydrocarbon receptor (AhR) in NHEKs was detected by reverse transcription polymerase chain reaction (RT-PCR). The mRNA and protein levels of tumor necrosis factor-alpha (TNF-α) and interleukin-1β (IL-1β) were determined in NHEKs stimulated by LPS (10 μg/mL) with or without preincubation with LXA4 (100 nmol/L) for 30 min by real-time quantitative PCR (real-time qPCR) and enzyme-linked immunosorbent assay (ELISA), respectively. The expression levels of tumor necrosis factor receptor-associated factor 6 (TRAF6) and suppressors of cytokine signaling 2 (SOCS2) mRNAs and proteins, and nuclear translocation of NF-kB-p65 were measured by real-time qPCR and Western blotting, respectively. The results showed that NHEKs expressed TLR4, ALXR and AhR. LXA4 significantly inhibited the mRNA and protein expression levels of TNF-α, IL-1β and TRAF6 induced by LPS in NHEKs, and LXA4 obviously increased the expression of SOCS2 at mRNA and protein levels. The nuclear NF-kB-p65 protein expression induced by LPS was inhibited after preincubation with LXA4 in NHEKs. It was concluded that LXA4 inhibits the LPS-induced production of TNF-α and IL-1β in NHEKs by up-regulating SOCS2 and down-regulating TRAF6.

Meta-analysis of studies on mortality of early surgery vs. delayed surgery for patients with femoral neck fractures / 中国骨伤

<p><b>OBJECTIVE</b>Current guidelines indicate that surgery for femoral neck fracture should be performed within 24 hours. But the effect of early surgery on mortality was not consistent with each other. This study is to explore the effect of early surgery on the risk of death among elderly patients with femoral neck fracture.</p><p><b>METHODS</b>By searching Medline, PubMed, CENTRAL (the Cochrane central register of controlled trials), CBM, CNKI and VIP et al, published documents about studies of early surgery VS delayed surgery on mortality for femoral neck fractures were collected. The data were analysised by using statistic software Stata 11.0. Random or fixed effect models were applied to conduct meta analysis on the study results, the combined relative risk (RR) and the 95% confidence interval (CI) were calculated as well.</p><p><b>RESULTS</b>Six cohort studies and 8 430 patients were included in the combined analysis,which indicated that 64% death risk was observed in the early surgery group compared to the delayed surgery group (RR = 0.64, 95% CI: 0.55-0.73, P = 0.000). The death was divided into two subgroups: one was early death with 30 days and the other was late death after 6 months. For the early death, there was no statistic significance between early surgery and delayed surgery (RR = 0.93, 95% CI: 0.69-1.18, P = 0.076). And for the late death, only 59% death risk was observed in the early surgery group (RR = 0.59, 95% CI: 0.49-0.69, P = 0.000) compared to the delayed surgery group.</p><p><b>CONCLUSION</b>Early surgery was associated with a lower risk of death for femoral neck fracture patients.</p>

Micro machining of micro-cantilever probes for efficient deposition for biochips / 生物工程学报

Biochip technology will bring a tremendous revolution to life science and medical research in 21 century. Microarray assays represent an essential technical advance in biomedical research. Recently, the demand for microarray assay technology has spring up. Therefore, low cost and flexible techniques are needed to meet specific requirements for increasingly integrated biochips. Also performance must be improved in terms of speed and sensitivity. To this end, promising approaches, mainly based on micro and nanotechnologies, have been developed. In this paper, the design and microfabrication of a novel type of micro-cantilever probe are introduced. These probes were fabricated using silicon dioxide by Micro-electromechanical System (MEMS) techniques, and they featured one micron split gap, microchannels and self-replenishing reservoirs. All fabricated micro-cantilever probe were tested on Nanoarrayer instrumentation. Cy3-streptavidin was loaded as biological sample and patterned on DSU gold surface. Results showed these probes were capable of generating high quality biological arrays with routine spot sizes of 2 - 3 microns and could deposit at least three thousand spots without reloading. The spot size could potentially achieve sub-micron when probe size was further shrunk down by the high-resolution lithography technique or more precise microfabrication technologies, such as E-beam lithography. To further improve sample loading efficiency, it is needed to modify the cantilever surface in order to better confine sample inside the microchannel and reservoir, which will be researched in the future.