Chromatography, High Pressure Liquid ; methods ; Humans ; Neonicotinoids ; Pyridines ; blood

Retinal vessel is the only visible vessels in human body and systemic microvascular lesions could be evaluated by the degree of retinal vessels. ln this article, the progress of retinal vascular caliber measuring method and its influencing factors were briefly reviewed.

BACKGROUND: Foreign scholars use thermotherapy, a new pathway for synthetic therapy of tumor, to perform hyperpyrexia combined with chemical drug radiotherapy of intraperitoneal infiltration and metastasis or to study on the therapeutic effect of metaphase and advanced stage tumor. Especially, establishing thermal biology and thermal dosiology is a scientific and quantified track for synthetic therapy of thermal radiotherapy, thermal chemotherapy and hyperthermal perfusion of tumor.OBJECTIVE: To analyze the thermal dose effect of regional radiofrequency (RF) hyperthemia combined with radiotherapy, chemotherapy and thermal perfusion on metaphase and advanced stage tumor.DESIGN: Controlled observation.SETTING: Key Department of Traditional Chinese and Western Medicine for Tumor, the 107 Hospital of Chinese PLA (General Center for Non-traumatic Treatment and Diagnosis of Tumor).PARTICIPANTS: Totally 1 455 patients with metaphase and advanced-stage tumor admitted to the General Center for Non-traumatic Treatment and Diagnosis of Tumor, the 107 Hospital of Chinese PLA between June and September 2006 who received conservative palliative treatment in the Department of Internal Medicine were recruited in this study. They were all confirmed by pathology and imageology. ECOG was scored 2 to 4 points. Informed consents of detection and treatment were obtained from all the involved patients. The study was approved by the Hospital Ethics Committee.According to the therapeutic regimen, the patients were assigned into thermal perfusion group (n =53), thermal radiotherapy group (n =874), thermal chemotherapy group (n =458) and simple hyperthemia group (n =70).METHODS: After admission, patients in each group were performed peritoneal and pelvic cavity perfusion,intensity-modulated radiation therapy, routine chemotherapy and integrated traditional and western medicine palliative therapy, respectively. Meanwhile, they received RF hyperthemia using in vitro endogenic magnetic field hyperthermia system. A thermocouple was placed in the abdominal cavity. Temperature at 3 different sites in the abdominal cavity was collected, and meanwhile two different sites for measuring temperature at rectum and external acoustic meatus were monitored. The maximal temperature (Tmax), minimal temperature (Tmin) and the average temperature (Tave) of therapeutic target were recorded. 40 ℃/min was used as thermal dose, thermal perfusion was performed once a week, and RF hyperthemia was conducted twice a week, 60 minutes once. Target temperature was 39.5 to 43 ℃, and the thermal dose of 40 ℃/min was calculated out. Intensity-modulated radiation therapy was conducted within 1 hour before heating at (3-5)Gy/time, 3 to 4 times a week. Total dose was DT 30 to 50Gy. Thermal perfusion was conducted 2 to 3 times a week, and intensity-modulated radiation therapy was conducted once to twice a week and 6 to 8 times a course of treatment. The thermal effect of each patient was analyzed at different temperature and different diseases.MAIN OUTCOME MEASURES: ① To analyze the effect of effective thermal dose. ② To evaluate the therapeutic effect and the improvement of quality of life according to World Health Organization (WHO) objective therapeutic effect evaluation criteria and Zubrod-ECOG-WHO scores. ③To observe the changes in abdominal dropsy.RESULTS: Altogether 1 455 patients with metaphase and advanced stage participated in the final analysis. ①After perfusion, body temperature was over 39.5 ℃ in most cases after 15-minute warming, over 40.0 ℃ after another 25-minute warming, over 41.0 ℃ after additional 35-minute arming, and even to 43.0 ℃ after frequent such a thermal therapy. Temperature over 41 ℃ was found in 91 cases, at 40 ℃-40.9 ℃ in 414 cases and at 39.5 ℃-39.9 ℃ in 950 cases. ② The thermal effect of 40 ℃/min could obviously improve the therapeutic effects of graded intensity-modulated radiation therapy, low-dose chemotherapy and thermal perfusion group. The total effective rate of thermal perfusion group, thermal radiotherapy group, thermal chemotherapy group and simple hyperthemia group was 81.6%, 81.9%, 80% and 50%, respectively. The clinical therapeutic effect of 40 ℃-40.9 ℃ and 39.5 ℃-39.9 ℃ in the thermal perfusion group, thermal radiotherapy group and thermal chemotherapy group was significantly better than that in the simple hyperthemia group (P ＜ 0.05). ③ Comparison of Zubrod-ECOG-WHO score of patients before and after therapy: After therapy, Zubrod-ECOG-WHO score was enhanced in 76.3% patients. ④The changes in abdominal dropsy of patients before and after therapy: After therapy, abdominal dropsy changed in 75% patients.⑤The therapeutic effects of different diseases at different temperature: For the same disease, the therapeutic effects over 41 ℃ and at 40 ℃-40.9 ℃ were significantly different from those at 39.5 ℃-39.9 ℃(P ＜ 0.05); However, the therapeutic effects over 41 ℃ were not significantly different from those at 40 ℃-40.9 ℃ (P ＞ 0.05).CONCLUSION: ①The effects of regional RF hyperthemia combined with intensity-modulated radiation therapy are confirmed in the treatment of metaphase and advanced-stage of tumor. ② The therapeutic effects strengthen correspondingly with 40 ℃/min thermal dose increase or temperature increase.

OBJECTIVETo investigate the effect of midazolam on human ether-a-go-go (hERG) K+ channels exogenously expressed in human embryonic kidney cells (HEK-293) and the underlying molecular mechanisms.

METHODSWhole-cell patch clamp technique was used to record WT, Y652A and F656C hERG K+ current expressed in HEK-293 cells.

RESULTSMidazolam inhibited hERG K+ current in a concentration-dependent manner, the half-maximum block concentrations (IC50) values were (1.31 ± 0.32) µmol/L. The half-activation voltage (V1/2) were (2.32 ± 0.38) mV for the control and (-1.96 ± 0.83) mV for 1.0 µmol/L midazolam. The half-inactivation voltage (V1/2) was slightly shifted towards negative voltages from (-49.25 ± 0.69) mV in control to (-57.53 ± 0.53) mV after 1.0 µmol/L midazolam (P < 0.05). Mutations in drug-binding sites (Y652A or F656C) of the hERG channel significantly attenuated the hERG current blockade by midazolam.

CONCLUSIONMidazolam can block hERG K+ channel and cause the speed of inactivation faster. Mutations in the drug-binding sites (Y652 or F656) of the hERG channel were found to attenuate hERG current blockage by midazolam.

Dose-Response Relationship, Drug ; Ether-A-Go-Go Potassium Channels ; drug effects ; HEK293 Cells ; Humans ; Midazolam ; pharmacology ; Mutation ; Patch-Clamp Techniques ; Potassium Channel Blockers ; pharmacology

The processing technology of traditional Mongolian medicine materials is distinctive, and it is one of the main characteristics of Mongolian pharmacy. Most of Mongolian medicines were used in the raw, but a quarter of medicinal materials need to be produced. Since ancient times, the processing of Mongolian medicine have cooperated with the Mongolian medicine clinical, which plays an important role in improving curative effect of Mongolian medicine and ensuring the safety of the drug. At present, the Mongolian medicines are processed still according to the traditional methods of the ancient literature method which has a lot of problems such as lag in technology, method of diversification, ambiguous indicators and unclear mechanism. Standardization of Mongolian medicine processing was based on traditional Mongolian medicine basic theory, which both projecting the characteristic, inheriting the traditional colleagues and reference to modern medicine, pharmacology, toxicology and other disciplines of knowledge. In this article, the processing situation, existing problem and standardization research of Mongolian medicine were described that providing a reference for the modernization and standardization of Mongolian medicine.
Chemistry, Pharmaceutical ; methods ; standards ; Drugs, Chinese Herbal ; chemistry ; standards ; Humans ; Medicine, Mongolian Traditional ; methods ; standards

Objective To investigate the effects ofTiaogan Lipi Huaji Prescription combined with high intensity focused ultrasound (HIFU) for the treatment of locally advanced pancreatic cancer.Methods Randomized, parallel controlled study was designed to select 60 patients with locally advanced pancreatic cancer, which were divided into treatment group and control group by random number table method, 30 cases in each group. The treatment group was givenTiaogan Lipi Huaji Prescription, one dose per day, twice a day, orally, 28 d as a treatment course, 6 courses in total; at the same time, HIFU was given to the treatment group, 30–60 min each time, once every other day, 2–3 times each week, and the tumor was completely covered for 2 times. The control group was given gemcitabine 1000 mg/m2, intravenous infusion, 1st, 8th d, 21–28 d for a cycle, a total of 6 cycles. The clinical benefit response, QOL-C30 score, survival status, progression-free survival (PFS), CA199 and CEA levels were observed.Results Clinical benefit rates of treatment group and control group were: the treatment group 1, 3, 6 months clinical benefit rate was 64.29%, 63.16%, and 50.00%, respectively; control group clinical benefit rate was 48.15%, 40.00%, and 44.44%, respectively, with statistical significance (P<0.05). The difference of QOL-C30 score between the two groups at the same time wasstatistically significant (P<0.05). During the treatment 1 to 6 months, CA199 in the two groups showed a downward trend, without statistical significance (P>0.05). CEA levels in the treatment group were lower than those in the control group at the same time with statistical significance (P<0.05), except for 2 and 6 months. The survival rates of treatment of 3, 6, and 12 months in the treatment group were 82.14%, 46.42% and 32.14%, respectively, and were 96.67%, 59.32% and 37.04%, respectively in the control group, without statistical significance (P>0.05). The survival time of the treatment group was (253.90±18.06)d in the control group and (246.77±17.31)d in the control group, without statistical significance (P>0.05). PFS was (136.73±16.22)d in the treatment group and (145.77±19.74)d in the control group, without statistical significance (P>0.05).ConclusionTiaogan Lipi Huaji Prescription combined with HIFU for the treatment of locally advanced pancreatic cancer has certain clinical efficacy, which can improve patients' life quality.

AIM:To investigate the effect of hirsutine on hypoxia-induced migration and invasion abilities of human breast cancer MCF-7 cells and its possible mechanism. METHODS:CCK-8 assay was employed to detect the cyto-toxic effect of hirsutine on the MCF-7 cells. Cell migration was observed by wound healing assay,and cell invasion ability was measured by Transwell invasion assay. Western blot was used to analyze the protein levels of hypoxia-inducible factor-1α(HIF-1α),Snail,E-cadherin and matrix metalloproteinase-9 (MMP-9). The mRNA levels of HIF-1α was detected by RT-PCR. RESULTS:Hirsutine remarkably reduced the cell viability from 32 μmol/L(P<0.05),and the IC50value was 62.82 μmol/L. In hypoxia state,MCF-7 cells showed more powerful capabilities of migration and invasion (P<0.05), higher protein levels of HIF-1α,Snail and MMP-9 (P<0.05),lower protein level of E-cadherin(P<0.05),and higher mRNA level of HIF-1α (P<0.05). These hypoxia-induced effects were all inhibited by hirsutine at 16 μmol/L (P<0.05),apart from the mRNA level of HIF-1α. CONCLUSION:Hirsutine inhibits hypoxia-induced migration and inva-sion in human breast cancer MCF-7 cells most likely via down-regulation of the protein levels of HIF-1α,Snail and MMP-9,and up-regulation of the protein level of E-cadherin.

It is crucial to improve the health care quality during the progress of constructing the new health care system in both urban and rural area.On the condition of increasing government commonweal investment for the basic health care,the standardized training program for the district medical practitioners will become the pivotal step to improve district health care in urban and rural area,standardize medical service,reduce the medical cost and optimize the accessibility to medical care for the mass.Taking the consideration on the personal resource of district medical service in the urban and rural area in China,certain strategic proposals related to the standardized training program for the fundamental medical practitioners are discussed.

The laser-induced breakdown spectroscopy (LIBS) was applied to perform a qualitative elementary analysis on four precious Tibetan medicines, i. e. Renqing Mangjue, Renqing Changjue, 25-herb coral pills and 25-herb pearl pills. The specific spectra of the four Tibetan medicines were established. In the experiment, Nd: YAG and 1 064 nm-baseband pulse laser were adopted to collect the spectra. A laser beam focused on the surface of the samples to generate plasma. Its spectral signal was detected by using spectrograph. Based on the National Institute of Standard and Technology (NIST) database, LIBS spectral lines were indentified. The four Tibetan medicines mainly included Ca, Na, K, Mg and other elements and C-N molecular band. Specifically, Fe was detected in Renqing Changjue and 25-herb pearl pills; heavy mental elements Hg and Cu were shown in Renqing Mangjue and Renqing Changjue; Ag was found in Renqing Changjue. The results demonstrated that LIBS is a reliable and rapid multi-element analysis on the four Tibetan medicines. With Real-time, rapid and nondestructive advantages, LIBS has a wide application prospect in the element analysis on ethnic medicines.
Calcium ; analysis ; Copper ; analysis ; Iron ; analysis ; Lasers ; Medicine, Tibetan Traditional ; Mercury ; analysis ; Silver ; analysis ; Spectrum Analysis ; methods

OBJECTIVE To observe the effects of glycogen synthase 3β (GSK-3β) in the regula-tion of NLRP3 inflammasome activation after acute myocardial infarction (MI) in Sprague Dawley(SD) rats. METHODS Ligation of the left anterior descending (LAD) in SD rats was used to establish an acute myocardial infarction model. SD rats were randomly divided into 3 groups (n=10, each group):sham group,MI group,and MI+SB group:the GSK-3β inhibitor(SB216763)was given 1 h by intrave-nous injection(0.6 mg·kg-1·d-1)before surgery.The serum and heart tissue were collected to measure lactate dehydrogenase (LDH) and IL-1β content and mRNA and protein levels of NLRP3, ASC, Cas-pase-1,IL-1β and GSK-3β after 2 days and 7 days operation,respectively.RESULTS The serum levels of LDH and IL-1β in the MI group were significantly higher than those in the sham group(P<0.01),and the MI+SB group was obviously lower than the MI group(P<0.01).In addition,mRNA and protein levels of NNLRP3, ASC, Caspase-1, IL-1β and GSK-3β expressions in MI group were clearly increased (P<0.01) compared with those in sham group.These indicators were significantly decreased in SB+MI group (P<0.01). Interestingly, the indicators were all higher at 7 days than 2 days. CONCLUSION GSK-3β inhibition induces cardioprotection via attenuating the activation of NLRP3 inflammasome after the acute myocardial infarction in rats.