Pain management in photodynamic therapy / 中华皮肤科杂志

Topical photodynamic therapy (PDT),a highly effective,safe and non-invasive therapeutic method,exerts good therapeutic effects on various diseases in dermatology,such as actinic keratosis,condyloma acuminatum,acne,and so on.The major drawback of PDT is pain during the treatment.Some patients have to interrupt or terminate the treatment because of pain intolerance.Some progress has been made in the management of PDT-related pain.It has been revealed that multiple factors are associated with PDT-related pain,including individual factors,lesion characteristics,therapeutic parameters (such as light sources,photosensitizers).Many methods can be used to manage PDT-related pain,including local cooling,oral analgesics,two-step irradiance protocol,topical anesthesia,injection anesthesia,inhalation anesthesia,transcutaneous electric nerve stimulation,hypnosis.

Accumulation and translocation of cadmium in soil and plant and its effects on growth of Artemisia annua and artemisinin content / 中国中药杂志

<p><b>OBJECTIVE</b>To study the accumulation and translocation of cadmium in the soil and Artemisia annua, and observe its effects on growth of A. annua and artemisinin content.</p><p><b>METHOD</b>A. annua were cultivated in pots with Cd concentration at 0.5, 1.5, 4.5 mg x kg(-1) level, respectively.</p><p><b>RESULT AND CONCLUSION</b>The growth of A. annua was inhibited at all the Cd levels characterized by the decreases of biomass and agronomic parameters; Most of Cd was accumulated in the roots of A. annua, and the ratios of Cd concentrations in roots and aerial part were 1.8:1 and 2.3:1 at 1.5, 4.5 mg x kg(-1) Cd level, respectively. Artemisinin content increased significant at 0.5 mg x kg(-1) Cd level, but there were no significant changes comparing with control group other Cd levels.</p>

Identification of Rhizome Dioscoreae in different areas by thermal analysis / 中草药

Object To investigate the feasibility that Rhizoma Dioscoreae in different areas was identified by thermal analysis Methods By comparison of the figures for the character of the DTA and DTG curves in N 2 and air environment, Rhizoma Dioscoreae from five areas was identified Results The DTA and DTG curves of varied Rhizoma Dioscoreae were different from each other Conclusion The method can be used in the identification of a variety of Rhizoma Dioscoreae from different areas