Multiple myeloma (MM) is a malignant plasma cell disease which occured predominantly in the elderly.In recent years,due to the application of small molecular proteasome inhibitor and immunomodulator,MM has become a chronic disease with good response to new treatments rather than a deadly disease that is lack of effective treatments.However,the occurrence of drug resistance makes MM less likely to be cured,which is one of the biggest challenges in MM clinical treatment.This article will review the mechanisms of acquired resistance to bortezomib in MM,including target genes modification,bypass signaling and so forth.

BACKGROUND:Zirconia al-ceramic crowns have been widely accepted in the clinic because of its excelent mechanical properties, biocompatibility and aesthetic performance. OBJECTIVE: To investigate the clinical efficacy of zirconia al-ceramic crowns prepared using computer-aided design/computer-aided manufacturingversusconventional method. METHODS:Eighty-seven patients who used zirconia al-ceramic crowns, consisting of 56 males and 31 females, aged 21-56 years were included in this study. Among these patients, 42 patients were subjected to tooth repair with zirconia al-ceramic crowns prepared using computer-aided design/computer-aided manufacturing technique (experimental group) and 45 patients received tooth repair with zirconia al-ceramic crowns prepared using conventional method (control group). At the end of the 6th month after zirconia al-ceramic crown repair, denture surface texture, the color of the restoration, anatomic appearance of prosthesis, marginal integrity, denture health and patient’s satisfaction were investigated between the experimental and control groups. RESULTS AND CONCLUSION:After repair with zirconia al-ceramic crowns, patient satisfaction rate of the color of the restoration and total patient satisfaction rate in the experimental group were significantly greater than in the control group (100%vs. 78%, 95%vs. 82%,P < 0.05). The anatomic appearance of prosthesis in the experimental group was superior to that in the control group (P < 0.05). There were no significant differences in denture surface texture, the color of the restoration, and marginal integrity between the experimental and control groups (P > 0.05). Discoloration, cracks and chipping and other adverse reactions were observed in neither experimental group nor control group. These findings suggest that the zirconia al-ceramic crowns prepared using computer-aided design/computer-aided manufacturing technique exhibit good aesthetic performance, stability and biocompatibility.

Health Promotion ; Humans ; Occupational Health

Wenchuan earthquate brought great misfortune to people,but this disaster has evoken human beings' moral power greatly.Love is the source of moral power,altruism is basic point of moral power and charity is performence of moral power.In this paper,we discuss moral powers' meanings and founctions in three aspects: great devotion of love,altruistic sacrifice and all kinds of charity without the boundary of counties and field.

· AlM: To analyze the clinical data of 54 cases misdiagnosed as optic neuritis and to explore measures to reduce misdiagnosis
· METHODS: This retrospective study comprised 54 patients that had been misdiagnosed as optic neuritis from September 2000 to June 2013. The misdiagnosis features were summarized.
· RESULTS:Many diseases can easily be misdiagnosed as optic neuritis, including ischemic optic neuropathy, intracranial tumors, optic nerve vasculitis, myelinated nerve fibers, and so on.
· CONCLUSlON: The measures to reduce misdiagnosis consisted of detailed history collection, perfect physical examination and comprehensive expertise of fundus disease.

Objective To investigate the effect of hepatitis B virus X protein (HBx) on the induction of eytochrome P450 (CYP) 3A4 by 1α, 25-(OH)2D3 in HepG2 cells in vitro. Methods HepG2 cells were transiently transfected with plasmid pEGFP-N1 (control) or co-transfected with recombinant HBx eukaryotic expression plasmid pcDNA3-X and pEGFP-N1. All HepG2 cells were divided into four groups: control group (without transfection), plasmid pEGFP-N1 transfection group, plasmid pEGFP-N1 transfection plus 1α ,25-(OH)2D3 group, plasmid pcDNA3-X and pEGFP-N1 co-transfection plus 1α ,25-(OH)2D3 group. The expression of CYP3A4 in HepG2 cell was induced by 0.35 μ mol/L 1α ,25-(OH)2D3 for 72 h, and mRNA levels and protein levels of CYP3A4 in the cells were detected by reverse transcriptase-polymerase chain reaction (RT-PCR) assay and Western-blot assay, respectively. The comparison between groups was done by F test. Results CYP3A4 mRNA level in plasmid pcDNA3-X and pEGFP-N1 co-transfection plus 1α ,25-(OH)2D3 group was 1.52 folds of control group, while that in plasmid pEGFP-N1 transfection plus 1α, 25-(OH)2D3 group was 3.97 folds (F= 4.72, P<0. 05). Similarly, intracellular CYP3A4 protein expression in plasmid pcDNA3-X and pEGFP-N1 co-transfection plus 1α , 25-(OH)2D3 group increased to 2.1 folds of control group, while that in plasmid pEGFP-N1 transfection plus 1α,25-(OH)2D3 group increased to 5.9 folds (F=4.68, P<0.05). Conclusion HBx interferes with the induction of CYP3A4 by 1α , 25-(OH)2D3 in HepG2 cell line, which suggests that HBx has suppressive effect on the expression of CYP3A4.

Endotoxemia is due to the infection of bacteria or lesions which release a lot of toxins into the blood,or the infusing of large amount of endotoxin-contaminated liquid.It can cause systemic inflammatory response syndrome,sepsis,or multiple organ dysfunction syndrome.Endotoxemia is a common and complex problem in modern emergency medicine.Early diagnosis and timely blocking not only can prevent further infection but also plays a positive role in the prevention and treatment of sepsis and its complications.In recent years,progresses have been made in the treatments of endotoxemia by hemoporfusion.The direct adsorption of endotoxin and inflammatory cytokines in blood can quickly reduce their concentration.This can not only weaken their own activity but also inhibit the release of other harmful cytokines,so as to improve the symptoms of infection.So far,the specific hishaffinity adsorbents having the clinical value are still at the exploratory stage.Although these materials were found effective in the treatments of endotoxemia,in-depth study need to be carried out on their clinical criteria in order to acquiremore satisfied results.

Objective To study the treatment effect of self-made huoxue tincture for treating skin injury and phlebitis caused by extravasation of chemotherapeutic drugs.Methods Patients(30 cases)with skin injury and phlebitis caused by extravasation of chemotherapeutic drugs were divided into the observation group(20 cases)and the control group(10 eases).The observation group underwent treatment with huoxue tincture,while the control group adopted local hydropathic compress with 50%magnesium sulfate.Results The effective rate of the observation group was higher than that of the control group,P<0.05.Conclusions Hydropathic compress with huoxue tincture was effective in the treatment of skin injury and phlebitis caused by extravasation of chemotherapeutic drugs.It may be widely applied in clinic.

Nondegradable stent graft and drug-eluting stent inhibit intima hyperplasy to certain extent, reduce the incidence of restenosis, and probabilize the treatment of coronary artery disease. However, the stent is a metallic foreign body, so it can induce thrombogenesis or immune responses. Novel biodegradable stent has good biocompatibility and biodegradation. It can degrade into CO2 and H2O2, participate metabolism, with no toxicity or complication caused by permanent metal stent. However, the biodegradable stent possesses inadequate mechanical performance and support. How to improve the biological stability and controllability through optimizing material integral quality and modulating their molecular constitution, and how to reduce inflammatory reaction and vascular restenosis after stenting are the study focuses in medical and material fields.

Toll-like receptor 2 (TLR2) is the most w idely expressed receptor in the Toll-like receptor family, and is also an important pattern recognition receptor of the innate immune system to pathogenic microorganisms. In addition, TLR2 can also identify endogenous risk signals and participate in non -pathogenic microbial inflammatory reaction in ischemic injury. The role of TLR2 and its signal transduction in ischemic cerebral w hite matter lesions have received more and more attention. This article reviews the relationship between TLR2 and ischemic cerebral white matter lesion.