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Recommendations for prevention and treatment of device-related pressure injuries during COVID-19 period

Yunchang ZHANG ; Chunquan SHENG ; Bingkai WANG ; Zhiqiang MA ; Feng YANG

Journal of Pharmaceutical Practice.2020;38(2):97-100. doi:10.3969/j.issn.1006-0111.202003018

With the outbreak of COVID-19, non-stop working medical staff need to wear protective equipment for a long time, which could easily cause device-related pressure injuries to nose, cheek, forehead or the back of auricle, and might even cause facial skin swelling and ulceration. The above problems reduce work efficiency and increase the infection risk for healthcare people. This article introduces the concept of device-related pressure injuries and summarizes the progress of the treatment for device-related pressure injuries at home and abroad in recent years, aiming at providing guidance for frontline medical staff to prevent device-related pressure injuries.

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Traditional Chinese medicine in the treatment and rehabilitation for Coronavirus Disease 2019

Benming YOU ; Zhongzhuang WANG

Journal of Pharmaceutical Practice.2020;38(2):101-104. doi:10.3969/j.issn.1006-0111.202003061

Based on national health insurance policy, traditional Chinese medicine (TCM) clinical practice and newly revealed pathological changes in Coronavirus Disease 2019 (COVID-19), the early TCM utilization was recommended to promote blood circulation and protect respiratory system. The fermented Ophiocordyceps powder preparations (Bailing tablets or capsules) are the top choice to inhibit the cytokine storm, relieve lung fibrosis and kidney damage.

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Advances in research on the impact of the plateau environmental on the drug metabolism

Zizhao GAO ; Rong WANG ; Anpeng ZHAO

Journal of Pharmaceutical Practice.2020;38(2):105-109. doi:10.3969/j.issn.1006-0111.201912096

Plateau environment will affect the metabolism of drugs in the body, which will cause changes in pharmacokinetic parameters, expression and function of drug metabolizing enzymes and transporters. With the rapid development of the pharmaceutical industry, therapeutic drug monitoring (TDM) has been widely paid attention to as a basis for personalized drugs. What impact does the plateau environment on monitoring drugs? In this literature review, we will summarize the types of commonly used therapeutic monitoring drugs, therapeutic windows, and blood samples, analyze the effects of plateau hypoxic environment on the metabolism of commonly used monitoring drugs, provide a reference for the clinical treatment and monitoring drugs of plateau, better ensure the rational use of drugs in the plateau population, and also provide a reference for the later research group to conduct the monitoring of plateau therapeutic drugs and the selection of research drugs.

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Research on chemical components and biological activities of the iridoids in Morinda genus

Yi SHEN ; Qi ZHANG ; Mengqin LIU ; Yuqiong HE ; Hailiang XIN ; Luping QIN ; Qiaoyan ZHANG

Journal of Pharmaceutical Practice.2020;38(2):110-114. doi:10.3969/j.issn.1006-0111.201907143

Morinda genus of Rubiaceae has been widely used in medicine at home and abroad. Many parts of Morinda tree are utilized in research, mainly including roots, stems, leaves, branches and seeds. Through the research of online databases, the chemical components and biological activities of the iridoids in Morinda genus were summarized in this paper. Up to now, more than 50 kinds of iridoids have been identified. In addition, more and more studies proved that Morinda iridoids might benefit human via such anti-inflammatory, antinociceptive, anti-oxidation, anti-tumor and bone protection. The theoretical basis was provided for the further development and utilization of the iridoids in Morinda genus.

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Establishment of mouse myocardial infarction model and early electrocardio- gram assessment

Wenjun HU ; Pin WANG ; Sili ZHENG ; Dongsheng WANG ; Chaoyu MIAO

Journal of Pharmaceutical Practice.2020;38(2):115-119. doi:10.3969/j.issn.1006-0111.202001011

Objective To establish and optimize a mouse myocardial infarction (MI) model, and to use twice limb lead ECGs immediately after coronary ligation and 4 h after surgery to evaluate the occurrence of myocardial infarction. Methods Twenty-nine male C57BL/6J mice were anesthetized with isoflurane. then a myocardial infarction model was established by ligating the left anterior descending (LAD) coronary artery through the third/fourth intercostal space of left anterior chest. Immediate and 4 h postoperative limb lead ECGs were performed. Twenty-four hours after surgery, the chest was opened and the occurrence of myocardial infarction was evaluated. The heart samples were taken for TTC staining to determine the infarct area and calculate the infarct area. Results During the mice underwent coronary artery ligation the intraoperative mortality was 6.8% (2/29), and the early postoperative (<4 h) mortality was 10.3% (3/29). The 24 h survival rate was 82.8% (24/29). 24 hours after TTC staining confirmed the occurrence of infarction, the myocardial infarction model was established. The success rate of the model was 79.3% (23/29), and the average infarct size (infarcted myocardial weight / whole ventricular weight) was (28 ± 6)%; The mice successfully established by the model showed obvious ST-T changes in the ECG at 4 hours after surgery, suggesting that a myocardial infarction has occurred. Conclusions The mouse myocardial infarction model was successfully established. The combined use of ECG immediately after surgery and 4 h after surgery could be used as a rapid and non-invasive evaluation method for mouse myocardial infarction.

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Microdialysis recovery of cefradine in vitro

Xianmi YANG ; Xiaojian XU ; Xuebin WANG ; Zhuo WANG ; Tongsheng WANG

Journal of Pharmaceutical Practice.2020;38(2):120-123. doi:10.3969/j.issn.1006-0111.201910044

Objective To determine the in vitro recovery rate and influencing factors of cefradine microdialysis. Methods Two different methods (loss method, gain method) of microdialysis concentration and LC-MS/MS were used to determine the in vitro recovery rate of cefradine. The effect of flow rate and concentration of the perfusate on the recovery rate were investigated. To explore the feasibility of microdialysis technology for pharmacokinetic studies in cefradine. Results The LC-MS/MS analysis method was linear in the required range and the method was sensitive and reliable. There was no significant difference in the recovery rate measured by gain or loss method. Under the same conditions, the in vitro recovery of the probe decreased with increasing flow rate, independent of the drug concentration around the probe. Conclusion Microdialysis technique could be used to study the pharmacokinetics of cefradine, and loss method could be used to determine the in vivo recovery rate and pharmacokinetics of cefradine on microdialysis.

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Determination of the content of Gd³⁺ in gadoteric acid meglumine salt injection by ICP-MS method

Qirong WANG ; Jieyi CHEN ; Miao SUN ; Yuping CHEN ; Feng YANG

Journal of Pharmaceutical Practice.2020;38(2):124-128. doi:10.3969/j.issn.1006-0111.201908132

Objective To establish a method for determining the content of Gd³⁺ in gadoteric acid meglumine salt injection. Methods ICP-MS was used. The separation column was a metal chelate column (1-ml Chelating Sepharose column), column temperature was normal temperature. Flow rate was 1 ml/min. Injection volume was 500 μl. Atoms were measured by ICP-MS with a molecular weight of 157 (The molecular weight of Gd was 157). The carrier gas was argon. Results The linear range of Gd³⁺ mass concentration was 0-500 ng/ml (r=1.000); The precision, stability and repeatability of the sample recovery test were all in accordance with the requirements. Conclusion The method was simple in operation, accurate in results and good in repeatability, which could be used to determine the content of Gd³⁺ in gadoteric acid meglumine salt injection.

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The effects of medical sodium hyaluronate gel on the tumor proliferation and metastasis

Tongkai CAI ; Wensheng YANG ; Yongbing CAO ; Hua HAN ; Lan YAN

Journal of Pharmaceutical Practice.2020;38(2):129-134. doi:10.3969/j.issn.1006-0111.201911108

Objective To investigate the effect of medical sodium hyaluronate gel (HA) on the growth and metastasis of abdominal and pelvic tumor cells in vitro and in nude mice. Methods Three tumor cells, Hela, CT26 and HCT116, were used to investigate the effects of different HA concentrations on the growth and migration of tumor cells in vitro by MTT assay and Transwell assay. An orthotopic transplantation model of colonic tumor in nude mice was established to investigate the effect on the proliferation of cell HCT116 by comparing the tumor volume and tumor mass 4 weeks after inoculation. The effects on the metastasis of cell CT26 were investigated by comparing the tumor metastasis rate and the number of metastatic lesions of lung and liver in nude mice among the different experimental groups 3 weeks after inoculation. Results HA did not promote the growth and metastasis of Hela, CT26 and HCT116 cells in vitro at different concentrations. Actually, HA exhibited a certain inhibitory activity at the concentration of 5 mg/ml. In the orthotopic transplantation model of colonic tumor-HCT116, HA did not promote the growth of cell HCT116. In the orthotopic transplantation model of colonic tumor-CT26, HA inhibited CT26 tumor metastasis. Conclusion Under the experimental conditions, HA did not promote the growth, migration or metastasis of abdominal and pelvic related tumor cells including Hela, CT26 and HCT116 in vitro and in vivo.

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Effects of hawthorn and melanoidins on the in-vitro growth of Bifidobacterium and E.coli

Yun WANG ; Min LU ; Jie LIANG ; Hua SUN ; Mengqi ZHANG ; Zelun LAN ; Jun WAN ; Xia ZHOU

Journal of Pharmaceutical Practice.2020;38(2):135-137. doi:10.3969/j.issn.1006-0111.201904129

Objective Effect of hawthorn and melanoidins on the in-vitro growth of Bifidobacterium and E.coli. Methods According to methods of the Chinese pharmacopoeia (2015),the charred hawthorn was prepared. The melanoidins in charred hawthorn were separated and purified by the macroporous resin extraction process. Ultraviolet spectrophotometry was used to detect melanoidins. The gas chromatography was used to detect the effects of hawthorn, charred hawthorn and melanoidins on the content of the acetic acid in Bifidobacterium and E.coli during growth, stable and decay period. Results In the early stage, the effects of hawthorn and charred hawthorn on bacteria were greater than melanoidins. In the middle and late stage, melanoidins inhibited the growth and metabolism of E.coli by changing the generation of acetic acid, and contributed to that of Bifidobacterium and also promoted the generation of acetic acid and regulate the intestinal flora. Conclusion Hawthorn, charred hawthorn and melanoidins all promote digestion by promoting the growth and metabolism of intestinal flora. Among them, charred hawthorn has a better effect on intestinal flora.

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Identification of chemical constituents of Xiakucao Xiaoliu mixture by HPLC-TOF/MS

Yuanyuan DAI ; Xiaohe WANG ; Minghua MA ; Qiangguo JI ; Xiaoyan GU ; Tiejun WU ; Hua NIAN

Journal of Pharmaceutical Practice.2020;38(2):138-142. doi:10.3969/j.issn.1006-0111.201907116

Objective To identify the chemical constituents of Xiakucao Xiaoliu mixture by high performance liquid chromatography-high resolution time-of-flight mass spectrometry (HPLC-TOF/MS). Methods The chromatographic separation ACE (3.0mm×150 mm) column was used. The mobile phase was methanol (A) and 0.1% formic acid (B). The gradient elution was: 0-5 min, 5% A; 5-10 min, 5%-15% A; 10-30 min, 15%-45%A; 30-40 min, 45%-70%B; 40-50 min, 70%-90%B. The injection volume was 2 μl. The flow rate was 0.4 ml/min. The column temperature was 25°C. The mass spectrometry was characterized by time-of-flight mass spectrometry, using ESI ion source. The common monitoring was in positive and negative ion mode. The reference ion was m/z 121.9856, 1033.9881. The scanning range was m/z 100-1200. Results A total of 37 chemical constituents were identified in the Xiakucao Xiaoliu mixture, 8 in the positive ion mode fragment voltage of 160 V, 28 in the negative ion mode fragment voltage of 160 V, and 19 in the fragment voltage of 260 V. Both positive and negative ions had 4 responses. The negative ion mode has 16 responses under both fragment voltages. And the ingredients were medicinal. Conclusion An effective method for the identification of the chemical constituents of Prunella vulgaris L. by HPLC-TOF/MS was established, which laid a foundation for its quality control and in-depth study in vivo.

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