Discussion about risk and management of Chinese patent medicine with double identity / 中国中药杂志

Chinese patent medicine with double identity was a special phenomenon, and many preparations not only were prescription drugs but also over the counter ( OTC) drugs, which brought a lot of trouble. Based on statistics of list of OTC medicines of CFDA, related varieties, route of administration and functions of these drugs were searched. The causes of insufficient were analyzed and the potential risk was investigated. To ensure the safety of drug usage for the patient, risk management system should be set up by improving the technical requirements for registration, improving the drug labels and manuals, playing the role of pharmacists in pharmacy services and raising awareness of doctor and patient for these drugs.

Evaluation of jaws-only intensity-modulated radiation therapy for nasopharyngeal carcinoma / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the feasibility and efficiency of jaws-only intensity-modulated radiation therapy (JO-IMRT) in treatment of nasopharyngeal carcinoma (NPC) using direct aperture optimization (DAO) technique and the independent jaws of linear accelerator.</p><p><b>METHODS</b>Both JO-IMRT and MLC-IMRT were planed in 10 NPC cases. The differences in the target coverage and dose uniformity, as well as the total monitor units and delivery times of the two IMRT plans were compared.</p><p><b>RESULTS</b>All the tested plans met the clinical requirement of the designed simplified IMRT (sIMRT). The conformal index (CI) of JO-IMRT and MLC-IMRT were 0.941±0.015 and 0.981±0.013, respectively (P<0.001), showing a minor superiority of MLC-IMRT. While controlling the total segment numbers to approach the limitation of sIMRT, the two therapies showed a total MU of 474.3 and 419.6 (P<0.05) with delivery times of 8.0 and 7.5 min (P<0.01), respectively. The efficiency of JO-IMRT was slightly lower than that of MLC-IMRT.</p><p><b>CONCLUSION</b>JO-IMRT can meet the sIMRT requirement in NPC treatment, and is feasible as an alternative treatment modality for the centers not equipped with MLC in their accelerators.</p>

Inhibitory effects of recombinant adenovirus carrying human endostatin gene on the growth of human pancreatic carcinoma xenograft in nude mice / 南方医科大学学报

<p><b>OBJECTIVE</b>To evaluate the inhibitory effect of recombinant adenovirus carrying human endostatin gene (Ad-endo) on the growth of human pancreatic carcinoma xenograft in nude mice.</p><p><b>METHODS</b>The expression of endostatin in human pancreatic carcinoma Capan-2 cells was examined by RT-PCR after infection with Ad-endo. The supernatants of Capan-2 cells were collected after 48 h of infection with Ad-endo as the conditioned medium for human umbilical vein endothelial cells (HUVECs), whose proliferation in vitro was assayed. Capan-2 cell xenografts were established to determine the antitumoral effects of Ad-endo in vivo. The intratumoral microvessel density (MVD) was evaluated using CD31 staining.</p><p><b>RESULTS</b>The expression of endostatin gene was detected by PT-PCR in infected Capan-2 cells. The conditioned medium from Ad-endo-infected cells significantly inhibited HUVEC proliferation (P<0.05). Ad-endo significantly suppressed the growth of Capan-2 tumor xenografts in nude mice (P<0.05), and the MVD decreased significantly in the treated tumor (P<0.05) as compared with that in the control group.</p><p><b>CONCLUSION</b>Adenovirus carrying human endostatin gene produces inhibitory effects on the growth of human pancreatic carcinoma tumors in nude mice.</p>