The development of anti-epidermal growth factor receptor monoclonal antibodies (anti-EGFR McAbs) marked a significant milestone in metastatic colorectal cancer (mCRC) treatment. The addition of anti-EGFR McAb can greatly improve quality of life of mCRC patients and mCRC prognosis and markedly increases the overall survival rate from 6 months to nearly 30 months. KRAS and NRAS mutations contribute to the primary resistance to anti-EGFR therapy and can serve as well-established predictive markers for pa-tient selection. Apart from the RAS family, other molecular alteration in EGFR signaling pathway may also compromise the efficacy of anti-EGFR treatment. In addition, patients who responded to anti-EGFR treatment eventually develop acquired drug resistance within 13 and 18 months. In this review, the mechanisms underlying the primary and secondary resistance to anti-EGFR therapy are summa-rized, and a possible strategy to circumvent drug resistance is proposed. We hope this review can provide compelling evidence, deeper insights, and reasonable guidance to facilitate the precise molecular targeted therapy of mCRC.

The effect of ahalysantinfarctasum (AFT) on acute hypoxic pulmonary hypertension of dogs was examined. The'decrease in pulmonary vascular resistance and a dose dependent attenuation of acute hypoxic pulmonary vasoconstriction by AFT were found. AFT did not alter systemic vascular resistance. PaO_2 and PaCO_2 6-keto-PGF_(1?) increased significantly, however after the intravenous infusion of AFT, TXB_2 did not change. It is suggested that AFT may attenuate hypoxic pulmonary vasoconstriction by tnducing the synthesis or release of PG I to nreyent nulmonary hypertension

0.05).Maxillary incisors were easily to be affected,especially the maxillary central incisor.Crown fracture was the most common traumatic type.The combination of dental trauma and oral and maxillofacial soft tissue injury was experienced by 692 patients(71.0%).Conclusion: Dental trauma was one of the common diseases in oral emergencies.Knowledge of the etiological and clinical characteristics of emergency dental trauma could help us to treat them and make specific preventive measures.Clinical examination should be comprehensive and meticulous to avoid misdiagnosis,for emergency dental trauma often involving multiple teeth,and associated with different degrees of maxillofacial soft tissue injury.

Objective To study the influence of couple-centered mental intervention on marital quality and subjective happiness among young-and middle-aged breast cancer patients undergoing modified radical mastectomy.Methods A total of 100 postoperative young-and middle-aged breast cancer patients were divided into observation group (n=50) and control group (n=50) using random digit number table according to the order of hospitalization.The patients in the observation group were given the couple-based mental intervention,and the control were given the routine mental intervention only.The marital quality and subjective happiness between the 2 groups were evaluated and compared by Olson marital quality questionnaire and Memorial University of Newfoundland scale of happiness (MUNSH) respectively before intervention and 6 months after intervention.Result After intervention,both the score of marital quality and subjective happiness in the observation group were significantly higher than those in the control group (P＜ 0.05).Conclusion The enforcement of couple-centered mental intervention among the young-and middle-aged breast cancer patients undergoing modified radical mastectomy can significantly improve the marital quality and subjective happiness.

The addition of HER2-targeted therapy has markedly improved the survival and prognosis of patients with advanced gastric cancer. Inhibiting the HER2 signaling pathway has become the backbone treatment for advanced HER2-positive gastric cancer in the first-line setting. TOGA trial established trastuzumab in combination with cisplatin and 5-flurouracil as the standard first-line treat-ment. In the post-TOGA era, combinations of trastuzumab with other chemotherapy agents were proven to be effective as both the second-line treatment and the conversion treatment. Such combinations are promising in the neoadjuvant treatment for locally ad-vanced gastric cancer. Research focuses on the development of novel anti-HER2 agents in combination with agents targeting against other signal pathways. Real-time monitoring of the gene expression profile is the key to discovering the mechanism of trastuzumab re-sistance. The preliminary results of existing clinical trials have shown potential to overcome resistance to trastuzumab. In this review, we summarized the treatment advancement for HER2 positive gastric cancer and the direction for future development, thereby provid-ing guidance on clinical practice.

OBJECTIVE:To establish a method for the content determination of total flavonoids in onion extracts.METH_ ODS:UV spectrophotometry was adopted in the determination with the detection wavelength set at270nm.RESULTS:Good linear relationship with the absorbability was achieved when the detection concentration of eldrin was within a range of0.002～0.01mg/ml(r=0.9978),the average recovery was99.15%(RSD=1.52%).CONCLUSION:This method was simple,rapid and accurate.

Objective To find out the classification of diseases contracted by patients of the emergency department.Methods A retrospective investigation and analysis was made of the medical records of 82 598 emergency cases in our hospital. Results Injury and poisoning, respiratory disease, and disease of digestive system were the first three kinds of disease treated by the emergency department; male emergency cases outnumbered female ones; the volume and visiting hours of emergency cases in a typical day take the shape of humps, with 19 to 21 hours being the climax; the ages of emergency cases averaged 41.5, with patients of the age group running from 19 to 35 being the largest in number in 16 kinds of disease. Conclusion ①It is imperative to determine the priorities of technology construction and the orientation of talent cultivation in the emergency department according to the disease spectrum of emergency cases. ②It is necessary to attach importance to the education of males in health, safely and precautions. ③It is essential to fully recognize the great significance that enhancement of the expertise of the emergency department carries with regard to the health of the population. ④It is important to rationally plan work in accordance with the rush hours of emergency cases's visits.

Emergency departments of hospitals are exposed to risks of patient complaints and disputes, and the emergency department of a stomatology hospital is no exception. Medical disputes at the emergency department of Peking University Stomatology Hospital, as registered at the department of medical affairs of the hospital in the past ten years, are analyzed with statistical processing. The results are used in studying characteristics of medical disputes frequently found in stomatology emergency cases, for references and recommendations on prevention and avoidance of such disputes in future.

Objective To investigate the roles of a variety of cytokines including transforming growth factor beta (TGF-β),interleukin-6 (IL-6) and interleukin-2 (IL-2) in the differentiation of CD+4 Tlymphocyte cells.Methods T lymphocyte cells either in human peripheral blood or routine spleen were cultured in vitro under different stimulation conditions.Flow cytometry was used to analyze the percentages of CD+4IL-17+ T-helper 17(Th17) cells,CD+8 IL-17+ T cells,CD+4 CD+25 FOXP+3 T regulatory (Treg) cells among activated T cells.Results Differentiation of Treg cells,Th17 cells and CD+8 IL-17+ T lymphocyte cells was enhanced when murine splenic T cells were cultured with TGF-β.The levels of expression were (7.8±2.2)%,(12.6±3.1)%,(10.1±2.6)% ,respectively.Experimental control group was severally same type of T cells without cytokine treatment.The levels of expression were (4.8±0.6) %,(1.7±0.5) %,(1.0±0.4) %,respectively.There were statistically significant differences among them (q=4.09,8.80,9.61.P<0.05 or P<0.01).Under combination treatment with IL-6 and TGF-β,(17.8±5.3) % Th17 cells and (15.0±4.2)% CDCD+8 IL-17CD+ T cells were induced,whereas the levels of Treg cells whose differentiation were restrained were (4.1±1.2) %.The differences were statistically significant compared with the level of same type of T cells in TGF-β group (q=5.03,5.17,5.04,P<0.01).Moreover,combination treatment with IL-2 and TGF-β decreased percentages of Th17 and CDCD+8 IL-17CD+ T cells and increased percentages of Treg cells in T cell population.There was an opposite effect when anti-IL-2 was apphed.The percentages of Th17 and CD+8 IL-17+ T cells were increased and the percentages of Treg cells were reduced The regulation trend of T lymphocyte cells in human peripheral blood was similar with those in routine spleen.Conclusion Various cytokines are of great importance in the regulation of the balance between Th17 and Treg cell.

Course construction is the groundwork for vocational college to improve education quality. The first thing for the excellent course construction is to raise awareness. The fundamental starting point and destination are benefitial to students. It must start from the teachers themselves, and have entire optimization in the teaching content,teaching methods ,teaching materials, the means of teaching and so on.