Efficacy and safety of total glucosides of paeony in the treatment of recurrent aphthous ulcers: a single-center, double-blind, randomized, placebo-controlled clinical trial.

Introduction: There has been a lack of treatments available to lower the frequency of recurrent aphthous ulcers (RAUs) until now. Total glucosides of paeony (TGP) is a botanical drug extracted from the dried roots of Paeonia lactiflora Pall. [Ranunculaceae; Paeoniae Radix Alba]. This study aims to evaluate the efficacy and safety of TGP in the treatment of RAU. Methods: This study was registered with the Chinese Clinical Trial Registry (ChiCTR1900025623). Patients were randomly assigned to the TGP or placebo group and treated with 1.8 g/day for 24 weeks. Participants were observed for a total of 36 weeks and were asked to record ulcer severity, medication, and adverse reactions in the form of diaries or apps every day. The primary outcome was the monthly ulcer-free interval. Results: A total of 79 individuals were enrolled, with 40 assigned to the TGP group and 39 to the placebo group. The dropout rate was 18.18%. In the TGP group, the monthly ulcer-free interval was significantly longer than baseline (median, 9.6 days) since weeks 13-24 (median, 18.5 days) (p < 0.05), and after discontinuation, it was further prolonged (median, 24.7 days) than in weeks 13-24 (p < 0.05). In addition, the monthly ulcer-free interval was longer in the TGP group than in the placebo group (median, 15.9 days) at weeks 25-36 (p < 0.001). There were better improvements in the monthly number of ulcers and monthly area of ulcers, and visual analog scoring in the TGP group at weeks 25-36 (p < 0.001). Conclusion: TGP had a good long-term therapeutic effect on RAU with frequent occurrence. Systematic Review Registration: www.chictr.org.cn, identifier ChiCTR1900025623.

Moxa Wool in Different Purities and Different Growing Years Measured by Terahertz Spectroscopy.

Moxa wool is a traditional Chinese herbal medicine, which can warm channels to dispel coldness. At present, there is no unified index to evaluate the purity and growing years of moxa wool in the market. Terpineol is one of the effective substances in the volatile oil of moxa wool. Here, we characterize the purity and growing years of moxa wool by studying terpineol. Gas chromatography-mass spectrometry (GC-MS) and high-performance liquid chromatography (HPLC) are the methods for monitoring terpineol at present, all of which have defects of complicated procedures. We established linear fitting to distinguish the different purities of moxa wool through the intensities (areas) of terpineol, the characteristic peaks, and the consequence presented; the coefficient of determination (R 2) was higher than 0.90. Furthermore, based on the characteristic peak position of standard terpineol, the correlation model with the purity and growing year of moxa wool was set up, thereby differentiating the quality of moxa wool. We have built the partial least squares (PLS) model of the growing years of moxa wool with high accuracy, and the determination coefficient is greater than 0.98. In addition, we compare the quantitative accuracy of Raman spectroscopy with terahertz technology. Finally, a new method of terahertz spectroscopy to evaluate quality of moxa wool was found. It provides a new idea for the identification of inferior moxa wool in the market and a new method for identifying the quality of moxa wool in traditional Chinese medicine.

A search of only four key databases would identify most randomized controlled trials of acupuncture: A meta-epidemiological study.

Little research has been conducted to assess which specific databases should be searched when performing a systematic review (SR) on acupuncture. The current study aimed to identify key databases and the optimal database combination to retrieve randomized controlled trials (RCTs) on acupuncture for inclusion in SRs. A systematic search for SRs in the field of acupuncture was conducted in order to identify target databases and RCTs were extracted from the SRs that had searched all target databases. The proportions of SRs that had achieved 100%, 95%, or 90% recall of RCTs and the total recall of RCTs in various combinations of target databases were calculated. Sensitivity analysis was performed on those SRs that included 10 or more RCTs. CNKI, WanFang, VIP, PubMed, CENTRAL and Embase were regarded as target databases. A total of 4349 acupuncture RCTs were extracted from 286 SRs. Searching all six target databases retrieved 99.3% of all RCTs while 99.1% were recalled by searching the combination of CNKI, WanFang, PubMed and CENTRAL. There were no significant differences on total recall of RCTs (p = 0.549) or in the proportion of SRs with 90% recall of RCTs (97.2% vs. 97.6%; p = 0.794) between searching the above four and the full six target databases. Most results were similar in the sensitivity analysis. The combined retrieval power of CNKI, WanFang, PubMed and CENTRAL was considered an efficient choice to retrieve acupuncture RCTs included in SRs.

Literature Review on the Use of Herbal Extracts in the Treatment of Non- Alcoholic Fatty Liver Disease.

BACKGROUND: Non-alcoholic fatty liver disease is a common chronic liver injury disease, and its incidence is rapidly increasing across the globe, thus becoming a serious threat to human health. So far, the clinical prevention and treatment of non-alcoholic fatty liver disease mainly include single-targeted drug therapy, surgical treatment and lifestyle changes. However, these treatments cannot completely address the complex pathogenesis of non-alcoholic fatty liver disease and have various side effects. Recent studies reveal that many herbal extracts are found to have potential anti-non-alcoholic fatty liver disease activities. OBJECTIVE: This paper presents a review on herbal extracts used for the treatment of non-alcoholic fatty liver disease in experimental studies to provide a theoretical basis for their clinical application in the treatment of non-alcoholic fatty liver disease and for new drug development. METHODS: Scientific papers were retrieved by searching the PubMed database up to Feb 2021 using the following keywords: 'non-alcoholic fatty liver disease', 'herbal extracts' ('flavonoids', 'saponins', 'quinones', 'phenolic compounds', 'alkaloids', 'polysaccharides', 'ginkgolide B', 'schizandrin B', 'ursolic acid') and 'mechanism'. RESULTS: The pharmacological effects and mechanisms of many herbal extracts can reverse the adverse health effects of non-alcoholic fatty liver disease. CONCLUSION: In vitro and in vivo experimental studies indicated that herbal extracts can improve the symptoms of non-alcoholic fatty liver disease by inhibiting inflammation, antioxidant stress, improvement of lipid metabolism and insulin sensitivity and regulating intestinal bacteria flora. However, there needs to be sufficient data from human clinical trials to prove their efficacy and safety.

Capsaicin Attenuates Amyloid-ß-Induced Synapse Loss and Cognitive Impairments in Mice.

Alzheimer's disease (AD) is the most common cause of progressive cognitive impairment in the aged. The aggregation of the amyloid ß-protein (Aß) is a hallmark of AD and is linked to synapse loss and cognitive impairment. Capsaicin, a specific agonist of the transient receptor potential vanilloid 1 (TRPV1), has been proven to ameliorate stress-induced AD-like pathological and cognitive impairments, but it is unclear whether TRPV1 activation can affect cognitive and synaptic functions in Aß-induced mouse model of AD. In this study, we investigated the effects of TRPV1 activation on spatial memory and synaptic plasticity in mice treated with Aß. To induce AD-like pathological and cognitive impairments, adult C57Bl/6 mice were microinjected with Aß42 (100 µM, 2.5 µl/mouse, i.c.v.). Two weeks after Aß42 microinjection, spatial learning and memory as well as hippocampal long-term potentiation (LTP) were examined. The results showed that Aß42 microinjection significantly impaired spatial learning and memory in the Morris water maze and novel object recognition tests compared with controls. These behavioral changes were accompanied by synapse loss and impaired LTP in the CA1 area of hippocampus. More importantly, daily capsaicin (1 mg/kg, i.p.) treatment throughout the experiment dramatically improved spatial learning and memory and synaptic function, as reflected by enhanced hippocampal LTP and reduced synapse loss, whereas the TRPV1 antagonist capsazepine (1 mg/kg, i.p.) treatment had no effects on cognitive and synaptic function in Aß42-treated mice. These results indicate that TRPV1 activation by capsaicin rescues cognitive deficit in the Aß42-induced mouse model of AD both structurely and functionally.

A detection method of vegetable oils in edible blended oil based on three-dimensional fluorescence spectroscopy technique.

Edible blended vegetable oils are made from two or more refined oils. Blended oils can provide a wider range of essential fatty acids than single vegetable oils, which helps support good nutrition. Nutritional components in blended oils are related to the type and content of vegetable oils used, and a new, more accurate, method is proposed to identify and quantify the vegetable oils present using cluster analysis and a Quasi-Monte Carlo integral. Three-dimensional fluorescence spectra were obtained at 250-400nm (excitation) and 260-750nm (emission). Mixtures of sunflower, soybean and peanut oils were used as typical examples to validate the effectiveness of the method.

Determination of Component Contents of Blend Oil Based on Characteristics Peak Value Integration.

Edible blend oil market is confused at present. It has some problems such as confusing concepts, randomly named, shoddy and especially the fuzzy standard of compositions and ratios in blend oil. The national standard fails to come on time after eight years. The basic reason is the lack of qualitative and quantitative detection of vegetable oils in blend oil. Edible blend oil is mixed by different vegetable oils according to a certain proportion. Its nutrition is rich. Blend oil is eaten frequently in daily life. Different vegetable oil contains a certain components. The mixed vegetable oil can make full use of their nutrients and make the nutrients more balanced in blend oil. It is conducive to people's health. It is an effectively way to monitor blend oil market by the accurate determination of single vegetable oil content in blend oil. The types of blend oil are known, so we only need for accurate determination of its content. Three dimensional fluorescence spectra are used for the contents in blend oil. A new method of data processing is proposed with calculation of characteristics peak value integration in chosen characteristic area based on Quasi-Monte Carlo method, combined with Neural network method to solve nonlinear equations to obtain single vegetable oil content in blend oil. Peanut oil, soybean oil and sunflower oil are used as research object to reconcile into edible blend oil, with single oil regarded whole, not considered each oil's components. Recovery rates of 10 configurations of edible harmonic oil is measured to verify the validity of the method of characteristics peak value integration. An effective method is provided to detect components content of complex mixture in high sensitivity. Accuracy of recovery rats is increased, compared the common method of solution of linear equations used to detect components content of mixture. It can be used in the testing of kinds and content of edible vegetable oil in blend oil for the food quality detection, and provide an effective reference for the creation of national standards.

[Research on the Medicinal Effective Component and Characterization of Virus-Free Breeding and Sulfur Smoked Qi Chrysanthemum Based on FTIR and FT-Raman].

Based on Fourier transform infrared (FTIR) and Raman spectroscopy (FT - Raman), the effective medicinal composition and its content change of Qi chrysanthemum are directly and quickly determined among the virus-free breeding and sulfur smoked samples of three different groups. FTIR and FT-Raman spectra of three groups of Qi chrysanthemum sample are compared and analyzed. The results show that the intensities of multiple infrared absorption peaks are obvious different within the range of 1 800~500 cm-1 and the characteristic peak shapes are slightly different in the FTIR spectra of the three groups with obvious differences of characteristic peak shapes in FT - Raman spectrum have. FTIR and FT - Raman spectrum directly reflect that the stem tip virus-free breeding will make the volatile oil, flavonoids and other medicinal component content increase in Qi Chrysanthemum, but the sulfur smoked reduce. The FTIR, FT Raman spectroscopy for detection of effective medicinal composition changes in Qi Chrysanthemum caused by virus-free breeding or sulfur smoked establishes a scientific basis, also an effective method to test their component content.