Chinese Medicine Formula Huashibaidu Granule Early Treatment for Mild COVID-19 Patients: An Unblinded, Cluster-Randomized Clinical Trial.

Background: Previous research suggested that Chinese Medicine (CM) Formula Huashibaidu granule might shorten the disease course in coronavirus disease 2019 (COVID-19) patients. This research aimed to investigate the early treatment effect of Huashibaidu granule in well-managed patients with mild COVID-19. Methods: An unblinded cluster-randomized clinical trial was conducted at the Dongxihu FangCang hospital. Two cabins were randomly allocated to a CM or control group, with 204 mild COVID-19 participants in each cabin. All participants received conventional treatment over a 7 day period, while the ones in CM group were additionally given Huashibaidu granule 10 g twice daily. Participants were followed up to their clinical endpoint. The primary outcome was worsening symptoms before the clinical endpoint. The secondary outcomes were cure and discharge before the clinical endpoint and alleviation of composite symptoms after the 7 days of treatment. Results: All 408 participants were followed up to their clinical endpoint and included in statistical analysis. Baseline characteristics were comparable between the two groups (P > 0.05). The number of worsening patients in the CM group was 5 (2.5%), and that in the control group was 16 (7.8%) with a significant difference between groups (P = 0.014). Eight foreseeable mild adverse events occurred without statistical difference between groups (P = 0.151). Conclusion: Seven days of early treatment with Huashibaidu granule reduced the likelihood of worsening symptoms in patients with mild COVID-19. Our study supports Huashibaidu granule as an active option for early treatment of mild COVID-19 in similar well-managed medical environments. Clinical Trial Registration:www.chictr.org.cn/showproj.aspx?proj=49408, identifier: ChiCTR2000029763.

Combination of Hua Shi Bai Du granule (Q-14) and standard care in the treatment of patients with coronavirus disease 2019 (COVID-19): A single-center, open-label, randomized controlled trial.

OBJECTIVE: To evaluate the efficacy and safety of Hua Shi Bai Du Granule (Q-14) plus standard care compared with standard care alone in adults with coronavirus disease (COVID-19). STUDY DESIGN: A single-center, open-label, randomized controlled trial. SETTING: Wuhan Jinyintan Hospital, Wuhan, China, February 27 to March 27, 2020. PARTICIPANTS: A total of 204 patients with laboratory-confirmed COVID-19 were randomized into the treatment group and control group, consisting of 102 patients in each group. INTERVENTIONS: In the treatment group, Q-14 was administered at 10 g (granules) twice daily for 14 days, plus standard care. In the control group, patients were provided standard care alone for 14 days. MAIN OUTCOME MEASURE: The primary outcome was the conversion time for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral assay. Adverse events were analyzed in the safety population. RESULTS: Among the 204 patients, 195 were analyzed according to the intention-to-treat principle. A total of 149 patients (71 vs. 78 in the treatment and control groups, respectively) tested negative via the SARS-CoV-2 viral assay. There was no statistical significance in the conversion time between the treatment group and control group (Full analysis set: Median [interquartile range]: 10.00 [9.00-11.00] vs. 10.00 [9.00-11.00]; Mean rank: 67.92 vs. 81.44; P = 0.051). The recovery time for fever was shorter in the treatment group than in the control group. The disappearance rate of symptoms like cough, fatigue, and chest discomfort was significantly higher in the treatment group. In chest computed tomography (CT) examinations, the overall evaluation of chest CT examination after treatment compared with baseline showed that more patients improved in the treatment group. There were no significant differences in the other outcomes. CONCLUSION: The combination of Q-14 and standard care for COVID-19 was useful for the improvement of symptoms (such as fever, cough, fatigue, and chest discomfort), but did not result in a significantly higher probability of negative conversion in the SARS-CoV-2 viral assay. No serious adverse events were observed. TRIAL REGISTRATION: ChiCTR2000030288.

Efficacy and safety of Chinese herbal medicine versus Lopinavir-Ritonavir in adult patients with coronavirus disease 2019: A non-randomized controlled trial.

BACKGROUND: Treatments for coronavirus disease 2019 (COVID-19) are limited by suboptimal efficacy. METHODS: From January 30, 2020 to March 23, 2020, we conducted a non-randomised controlled trial, in which all adult patients with laboratory-confirmed COVID-19 were assigned to three groups non-randomly and given supportive treatments: Group A, Lopinavir-Ritonavir; Group B, Huashi Baidu Formula (a Chinese medicineformula made by the China Academy of Chinese Medical Sciences to treat COVID-19, which is now in the clinical trial period) and Lopinavir-Ritonavir; and Group C, Huashi Baidu Formula. The use of antibiotics, antiviruses, and corticosteroids was permitted in Group A and B. Traditional Chinese medicine injections were permitted in Group C. The primary outcomes were clinical remission time (interval from admission to the first time the patient tested negatively for novel coronavirus or an obvious improvement was observed from chest CT) and clinical remission rate (number of patients whose clinical time was within 16 days/total number of patients). RESULTS: A total of 60 adult patients with COVID-19 were enrolled at sites in Wuhan, China, and the sample size of each group was 20. In Groups A, B and C, the clinical remission rates were 95.0%%(19/20), 100.0%%(20/20) and 100.0%%(20/20), respectively. Compared with Groups A and B, the clinical remission time of Group C was significantly shorter (5.9 days vs. 10.8 days, p < 0.05; 5.9 days vs. 9.7 days, p < 0.05). There was no significant difference among Groups A, B, and C in terms of the time taken to be released from quarantine. The clinical biochemical indicators and safety indexes showed no significant differences among the three groups. CONCLUSIONS: Our findings suggest that Lopinavir-Ritonavir has some efficacy in the treatment of COVID-19, and the Huashi Baidu Formula might enhance this effect to an extent. In addition, superiority was displayed in the treatment of COVID-19 through a combination of the Huashi Baidu Formula and traditional Chinese medicine injection. In future, well-designed prospective double-blinded randomised control trials are required to confirm our findings.

Improvement of vascular dysfunction by argirein through inhibiting endothelial cell apoptosis associated with ET-1/Nox4 signal pathway in diabetic rats.

Endothelial cell apoptosis plays an important role in the pathophysiological mechanism of vascular complications in type 2 diabetes mellitus (T2DM). Argirein, a new synthetic compound was demonstrated to inactivate NADPH oxidase to alleviate cardiac dysfunction in T2DM. Here, we investigated whether argirein medication attenuated the vascular dysfunction in T2DM by inhibiting endothelial cell apoptosis which was associated with NADPH oxidase. The rat aortic endothelial cells (RAECs) were incubated with glucose (30 mM) for 48 hour in vitro. It was shown that high glucose significantly increased the protein expression of BAX (Bcl-2 Associated X protein) and Caspase-3 and decreased Bcl2 (B-Cell Leukemia/Lymphoma 2) protein level in RAECs, which was normalized by argirein medication. The annexin V-FITC bound cell percentage and DNA fragments in agarose electrophoresis were markedly suppressed by argirein to confirm the anti-apoptotic property of argirein in RAECs. Furthermore, we found that argirein blocked the endothelin (ET)-1/Nox4 signal-dependent superoxide (O2-.) generation, which regulated endothelial cell apoptosis in RAECs. In vivo, argirein intervention relieved the vasodilatory response to acetylcholine and restored the expressions of Nox4 and BAX in the aorta endothelium of high-fat diet (HFD)-fed rats following streptozocin (STZ) injection. For the first time, we demonstrated that argirein could inhibit vascular endothelial cell apoptosis, which was attributed to blocking ET-1/Nox4 signal-dependent O2- generation in RAECs. This current study revealed the therapeutic effects of argirein to prevent the vascular complication in T2DM through inhibiting endothelial cell apoptosis which was associated with the anti-oxidative property of argirein.

Argirein alleviates vascular endothelial insulin resistance through suppressing the activation of Nox4-dependent O2- production in diabetic rats.

BACKGROUND: Insulin resistance in endothelial cells contributes to the development of cardiovascular disease in type 2 diabetes mellitus (T2DM). Therefore, there are great potential clinical implications in developing pharmacological interventions targeting endothelial insulin resistance. Our previous studies indicated that argirein which was developed by combining rhein with L-arginine by a hydrogen bond, could substantially relieved stress related exacerbation of cardiac failure and alleviated cardiac dysfunction in T2DM, which was associated with suppressing NADPH oxidase activity. However, it is unclear whether argirein treatment attenuates the vascular lesion and dysfunction in T2DM and its underlying mechanisms. METHODS AND RESULTS: The rat aortic endothelial cells (RAECs) were used to treat with palmitic acid (PA), a most common saturated free fatty acid, which could induce insulin resistance. It was showed that argirein increased glucose uptake and glucose transporter-4 (Glut4) expression and reversed the phosphorylation of IRS-1-ser307 and AKT-ser473, consequently resulting in the increase of the production of eNOS and NO in PA-induced RAECs. We further found that argirein blocked the Nox4-dependent superoxide (O2-.) generation, which regulated glucose metabolism in RAECs during PA stimulation. In vitro, argirein increased the release of endothelial NO to relieve the vasodilatory response to acetylcholine and insulin, and restored the expression of Nox4 and pIRS-1-ser307 in the aorta endothelium of high-fat diet (HFD)-fed rats following an injection of streptozocin (STZ). CONCLUSION: These results suggested that argirein could improve endothelial insulin resistance which was attributed to inhibiting Nox4-dependent redox signaling in RAECs. These studies thus revealed the novel effect of argirein to prevent the vascular complication in T2DM.

[Evaluation of implementation effect of clinical practice guideline on traditional Chinese medicine therapy alone or combined with antibiotics for acute tonsillitis].

The purpose of this article is to evaluate the clinical effect of clinical practice guideline on traditional Chinese medicine therapy alone or combined with antibiotics for acute tonsillitis. The applicability and application of the Guideline were evaluated based on the clinicians by using the electronic questionnaire. Questionnaires about 538 on application evaluation and 502 questionnaires on applicability evaluation were completed from April 28 to July 9, 2018. The subjects in the questionnaires include the clinicians with junior title, intermediate title, and senior title that have used this Guideline. The descriptive statistical analysis of the collected questionnaire was carried out. In the applicability evaluation, according to the classification of professional titles, the application rate was highest in intermediate title clinicians (26.77%), followed by junior (23.98%) and deputy senior (19.33%) professional title clinicians. In the quality evaluation, the rationality of application scope (98.61%) and the terminology accuracy (98.81%) scores were higher, and the rationality of differentiation and classification (96.05%) was the lowest. The applicability evaluation suggested that clinicians believed this Guideline had high safety (98.42%), reasonable content (98.03%), significant effect (99.6%), reduced use of antibiotics in Western medicine (93.89%), and a high applicability ratio (96.44%). In the application evaluation, Department of lung disease showed the highest application rate (44.24%); rationality of the Guideline was more than 97% in treatment rules and prophylaxis except the syndrome differentiation (92.75%); a high ratio of clinicians believed the recommended scheme was good: curative effect 97.4%, safety 97.59%, and economy 93.87%. The study shows that the clinical practice guideline on traditional Chinese medicine therapy alone or combined with antibiotics for acute tonsillitis is of good quality, high clinical use and good effect. It can be used as a standardized treatment scheme for acute tonsillitis in traditional Chinese medicine. But there are some unsuitable contents and need to be further improved. The Guideline should strengthen the revision on differentiation of symptoms and signs as well as prophylaxis.

[Advantages and evidence of Chinese medicine in prevention and treatment of adult acute tonsillitis].

Though evaluation and analysis on the relevant literatures at home and abroad in recent years, the total number of retrieved literature was 2 664. According to the inclusion criteria and exclusion criteria,the literatures were screened out, and the results were as follows：374 literatures. To analyse the advantages and evidence of Chinese medicine in the prevention and treatment of adult acute tonsillitis. It is found to be effective, convenient and practical for the treatment of acute tonsillitis by traditional Chinese medicine (TCM) like treatment according to syndrome differentiation, Chinese patent drug, self Chinese medicine prescription and external treatment. TCM has obvious advantages in the prevention and treatment of acute tonsillitis, has the function of supplementing or substituting antibiotics, and has the function of regulating the defense function of organism.

Argirein alleviates stress-induced and diabetic hypogonadism in rats via normalizing testis endothelin receptor A and connexin 43.

AIM: Argirein (rhein-arginine) is a derivative of rhein isolated from Chinese rhubarb (Rheum Officinale Baill.) that exhibits antioxidant and anti-inflammatory activities. In the present study we investigated the effects of argirein on stress-induced (hypergonadotrophic) and diabetic (hypogonadotrophic) hypogonadism in male rats. METHODS: Stress-induced and diabetic hypogonadism was induced in male rats via injection of isoproterenol (ISO) or streptozotocin (STZ). ISO-injected rats were treated with argirein (30 mg·kg(-1)·d(-1), po) or testosterone replacement (0.5 mg·kg(-1)·d(-1), sc) for 5 days, and STZ-injected rats were treated with argirein (40-120 mg·kg(-1)·d(-1), po) or aminoguanidine (100 mg·kg(-1)·d(-1), po) for 4 weeks. After the rats were euthanized, blood samples and testes were collected. Serum hormone levels were measured, and the expression of endothelin receptor A (ETA), connexin 43 (Cx43) and other proteins in testes was detected. For in vitro experiments, testis homogenate was prepared from normal male rats, and incubated with ISO (1 µmol/L) or high glucose (27 mmol/L). RESULTS: ISO injection induced hyper-gonadotrophic hypogonadism characterized by low testosterone and high FSH and LH levels in the serum, whereas STZ injection induced hypogonadotrophic hypogonadism as evidenced by low testosterone and low FSH and LH levels in the serum. In the testes of ISO- and STZ-injected rats, the expression of ETA, MMP-9, NADPH oxidase and pPKCε was significantly increased, and the expression of Cx43 was decreased. Administration of argirein attenuated both the abnormal serum hormone levels and the testis changes in ISO- and STZ-injected rats, and aminoguanidine produced similar actions in STZ-injected rats; testosterone replacement reversed the abnormal serum hormone levels, but did not affect the testis changes in ISO-injected rats. Argirein (0.3-3 µmol/L) exerted similar effects in testis homogenate incubated with ISO or high glucose in vitro. CONCLUSION: Two types of hypogonadism of male rats exhibit increased expression of ETA and depressed expression of Cx43 in testes, despite different patterns of serum FSH and LH. Argirein alleviates the two types of male hypogonadism via normalizing ETA and Cx43 in testes.

Isoproterenol induced stressful reactions in the brain are characterized by inflammation due to activation of NADPH oxidase and ER stress: attenuated by Apocynin, Rehmannia complex and Triterpene acids.

Inflammatory changes in the cerebral network are present in early mechanisms involved in neurodegenerative disease, Alzheimer disease (AD), and aging brain. We intended to verify that these are likely due to an activation of NADPH oxidase (NOX) and endoplasmic reticulum (ER) stress. Apocynin (APO) an inhibitor of NOX is potential to ameliorate these changes. Rehmannia complex (Reh) a famous prescription in China and the triterpene acids (TTA) isolated from Reh may relieve the isoproterenol (ISO) induced chronic inflammation in the brain, compared with APO. Rats were administered with ISO for 10 days and astrocytes were incubated with ISO for 24 h. Changes in neural MMP (matrix metalloproteinase), Cx43, AQP4 (aquaporin 4), NFκB, IκBß, and p-PERK (PKB like kinase) were conducted and intervened with APO, Reh and TTA, in vivo and in vitro, respectively. An increased MDA and upregulated NOX subunit p47phox, ETA, PERK in association with abnormal MMP-2/9 and Cx40/43 were found in cerebral tissue of ISO-injected rats. Astrocytes incubated with ISO exhibited upregulated APQ4, IκBß, NFκB and p-PERK/PERK and downregulated Cx43. These were significantly abrogated by APO and Reh, in vivo, and APO and TTA in vitro. In conclusion, neural damages induced by ISO were characterized by inflammatory changes in cerebral tissue and astrocytes, which were blunted significantly by APO, Reh and TTA, respectively. Reh and TTA are potential in alleviating the early pathogenesis in neurodegenerative changes in AD in the clinical settings through suppressing NOX and ER stress in the brain.

Hypoxia alters pharmacokinetics of argirein because of mitochondrial dysfunction that is alleviated by apocynin.

OBJECTIVES: Pharmacokinetics (PK) of argirein might be changed in response to mitochondrial (MITO) dysfunction and activated nicotinamide adenine dinucleotide phosphate oxidase (NOX) on hypoxia. We hypothesized that hypoxic changes in MITO and NOX could alter PK and tissue distribution of argirein. We tested if these changes in PK of argirein by hypoxia could be relieved by apocynin (APO), a blocker of NOX, through normalizing MITO and NOX. METHODS: Male Sprague-Dawley rats were exposed to hypoxia (O2 10% ± 5% 8 h per day) for 7 days and treated with APO (80 mg/kg, i.g.) in the last 4 days. The PK and tissue distribution of argirein were monitored by measuring its main metabolite rhein using HPLC analysis. Manganese superoxide dismutase (MnSOD) and NOX were assayed. KEY FINDINGS: The PK parameters and concentrations of rhein in the kidney, liver, heart and testes were significantly altered under hypoxia, accompanied with a reduced MnSOD and upregulated NOX compared with the normal. Altered argirein PK and distribution in these organs were relieved following APO administration. CONCLUSION: Abnormal PK and distribution of argirein by assaying its metabolite rhein are significant, consequent to hypoxic injury that is significantly ameliorated by APO through normalizing MITO and NOX.

Fourier transform near-infrared spectroscopy used for purity determination of rhein-L-arginine cocrystal (argirein).

A method is described using rapid and sensitive Fourier transform near-infrared spectroscopy (FT-NIRS) for the determination of rhein-L-arginine cocrystal (argirein). By mixing different values of argirein into different proportions with rhein and arginine, we obtained 41 batches of samples to deatermine. Partial least squares (PLS) regression was selected as the analysis type and standard normal variate (SNV) and original spectra were adopted for the spectral pretreatment. The correlation coefficient (R) of the calibration model was above 0.99 and the root mean square error of predictions (RMSEP) was under 0.012. The developed model was applied to 10 batches of known samples with satisfactory results. The established method is validated and can be applied to the intrinsic quality control of synthetic products and other cocrystals.

Male hypogonadism induced by high fat diet and low dose streptozotocin is mediated by activated endoplasmic reticulum stress and IκBß and attenuated by argirein and valsartan.

Male hypogonadism is frequently accompanied with type 2 diabetes due to testicular dysfunction, but the origin of the pathogenesis is not known. We measured whether pro-inflammatory factors including endoplasmic reticulum (ER) stress chaperones and inhibitory κBß (IκBß) contribute to testis damage in type 2 diabetic rats produced by a high-fat diet (HFD) and low dose streptozotocin (STZ). We determined whether these can be attenuated by the anti-inflammatory activity of argirein a derivative of rhein as compared to valsartan. Reduced testosterone and LH (luteinizing hormone) levels in serum were significant in association with a decrease in the levels of mRNA and steroidogenic acute regulatory protein (StAR), insulin receptor substrate (IRS-1), activated IκBß and ER stress chaperone C/EBP homologous protein (CHOP) in the diabetic testis and sperm count, motility and sexual behaviors were reduced in vivo. Additionally, Leydig cells cultured with high glucose showed upregulated IκBß, ER stress sensor PERK (PKR-like ER kinase) and p-Akt/Akt in vitro. These changes may be due to a component of inflammation linked to activated NADPH oxidase and were significantly alleviated by either argirein or valsartan. In conclusion, diabetic testopathy induced by a HFD and low STZ is characterized by an entity of inflammation and is alleviated by argirein and valsartan through normalizing activated IκBß and ER stress.

Hepatosteatosis and hepatic insulin resistance are blunted by argirein, an anti-inflammatory agent, through normalizing endoplasmic reticulum stress and apoptosis in diabetic liver.

OBJECTIVES: Insulin resistance represents a mechanism underlying defect metabolism of carbohydrate and lipid linked to inflammatory reactions in diabetic liver. We hypothesized that the changes may be secondary to endoplasmic reticulum (ER) stress, which could be alleviated by either argirein or valsartan. METHODS: Hepatosteatosis in diabetic liver was induced in rats fed with a high-fat diet (HFD) for 12 weeks combined with a single low dose of streptozotocin (STZ 35 mg/kg, ip). Interventions (mg/kg/d, po)with either argirein (50, 100 and 200) or valsartan (12) were conducted in the last 4 weeks. KEY FINDINGS: In diabetic liver fat was significantly accumulated in association with elevated hepatic glucose, serum insulin and homeostasis model assessment of insulin resistance value. Downregulated glucose transporter 4, insulin receptor substrate-1 and leptin receptor (P < 0.01) were found relative to normal, where DNA ladder, downregulated B cell lymphoma/leukemia-2, upregulated B cell lymphoma/leukemia-2 Associated X protein and upregulated ER stress chaperones such as Bip/GRP78 (also known as Binding Protein, BiP), PKR-like ER kinase (PERK), p-PERK/PERK and C/EBP homologous protein were significant. These abnormalities were significantly ameliorated by argirein and valsartan. CONCLUSIONS: Hepatosteatosis induced by HFD/low STZ manifests insulin resistance and apoptosis, linked to an entity of low-grade inflammation due to activated ER stress sensors. With anti-inflammatory activity either argirein or valsartan blunts hepatosteatosis through normalizing ER stress and apoptosis in the diabetic liver.

[Comparative study on decoction and dissolution of crude and processed corni fructus].

To compare and study the decoction and dissolution of active constituents in crude and processed Corni Fructus. HPLC, the traditional Chinese medicine (TCM) decoction method and the dissolution methods were adopted to compare and study the decoction yield and dissolution rate of loganin and morroniside, active constituents in crude and processed Corni Fructus. The results showed that the content of active constituents loganin and morroniside in crude and processed Corni Fructus did not change significantly; compared with crude Corni Fructus, processed Corni Fructus (decoction) contained much higher loganin, with no obvious change in morroniside; compared with crude Corni Fructus, processed Corni Fructus (extracts) showed no significant difference in loganin dissolution, but notable increase in morroniside dissolution in intestinal fluid; in gastric fluid, processed Corni Fructus showed significant increase in loganin and morroniside dissolutions. However, in comprehensive consideration of the decoction dose in clinical administration, and calculated on the basis of the formula of the decoction yield x dissolution rate = decoction-dissolution product, it showed increase in the decoction-dissolution products of both of the active constituents loganin and morroniside, with significant difference. This suggested that processed Corni Fructus is superior to crude Corni Fructus in clinical application. In this article, we proposed to compare the changes in decoction and dissolution of active constituents in crude and processed Corni Fructus, study the decoction-dissolution product, and then apply it in the quality evaluation of crude and processed Corni Fructus.

Argirein alleviates corpus cavernosum dysfunction by suppressing pro-inflammatory factors p66Shc and ER stress chaperone Bip in diabetic rats.

OBJECTIVES: The aim was to investigate whether argirein, which releases rhein and L-arginine after medication, could improve erectile dysfunction (ED) in diabetic rats through normalising the abnormalities of nitric oxide synthase (NOS), p66Shc and immunoglobulin heavy-chain binding protein (Bip), in the corpus cavernosum (CC). METHODS: SD rats were randomly divided into six groups. Except for the control group, rats were injected with streptozotocin (STZ) (60 mg/kg, i.p.) once. During weeks 5-8 following STZ injection, except for STZ-injected untreated rats, others were treated with aminoguanidine (AMG; 100 mg/kg/day, i.g.), or argirein at three doses (50, 100 and 200 mg/kg/day, i.g.). The vascular activity and biomarkers of the cavernosum were examined. KEY FINDINGS: Constrictive and dilative activity was abnormal in the CC, associated with decreased nitric oxide (NO) in serum in the diabetic (DM) group. Increased expression of p66Shc, Bip and inducible nitric oxide synthase (iNOS) and decreased endothelial nitric oxide synthase (eNOS) in the CC were significant in DM rats. Argirein and AMG improved these abnormities significantly. CONCLUSIONS: We concluded that vascular activity of the cavernosal tissue was impaired due to upregulated p66Shc and Bip in the diabetic CC. Argirein alleviates the vascular dysfunction of the CC by suppressing these upregulated pro-inflammatory proteins caused by diabetic lesions.

Novel software-based method to classify structurally similar compounds combined with high performance liquid chromatography-quadrupole time of flight mass spectrometry to identify complex components of herbal medicines.

The components of herbal medicines (HMs) are usually extremely complex, belonging to hundreds of compound classes with diverse chemical and physical properties. Full characterization of HMs is hugely important in order to identify the individual chemical constituents and provide a first step toward determining which components are responsible for the therapeutic effects of a particular medical plant. In this study, a novel software-based approach was developed to classify structurally similar compounds, and this was combined with high performance liquid chromatography/quadrupole time-of-flight mass spectrometry (HPLC-QTOF-MS) to identify the individual components in an extract of Mentha haplocalyx. A total of 33 compounds were tentatively identified in samples of M. haplocalyx extract, including 9 new minor constituents reported for the first time. Semi-quantitative analysis of the extract sample was also carried out. Software validation and robustness tests were performed. The results of this study demonstrate the enormous potential of this strategy, using classification based on structural similarity together with HPLC-QTOF-MS, for the identification and quantification of complex components in HMs and related products.

Application of Fourier transform near-infrared spectroscopy combined with high-performance liquid chromatography in rapid and simultaneous determination of essential components in crude Radix Scrophulariae.

A method is described using rapid and sensitive Fourier transform near-infrared spectroscopy combined with high-performance liquid chromatography-diode array detection for the simultaneous identification and determination of four bioactive compounds in crude Radix Scrophulariae samples. Partial least squares regression is selected as the analysis type and multiplicative scatter correction, second derivative, and Savitzky-Golay filter were adopted for the spectral pretreatment. The correlation coefficients (R) of the calibration models were above 0.96 and the root mean square error of predictions were under 0.028. The developed models were applied to unknown samples with satisfactory results. The established method was validated and can be applied to the intrinsic quality control of crude Radix Scrophulariae.

Activation of AQP4, p66Shc and endoplasmic reticulum stress is involved in inflammation by carrageenan and is suppressed by argirein, a derivative of rhein.

OBJECTIVES: We investigated the effect of argirein on acute inflammation edema and examined that aquaporin 4 (AQP4), p66Shc and activating transcription factor (ATF-6) might be involved in carrageenan-induced rat paw inflammation and be reversed by argirein, rhein and indometacin, but not L-arginine. METHODS: Inflammation was produced by carrageenan injected into rat paw and treated orally with argirein (100 mg/kg), rhein (100 mg/kg), L-arginine (100 mg/kg) or indometacin (5 mg/kg). Inflammatory oedema and biomarkers were examined. KEY FINDINGS: Swelling was reduced by argirein, rhein and indometacin; argirein was more effective than rhein at 1 h following medication. Activation of AQP4, p66Shc, ATF-6, NADPH oxidase subunits p22phox, gp91phox and matrix metalloproteinase 2 (P < 0.01) was significant and was suppressed by arginine, rhein and indometacin but not by l-arginine. CONCLUSIONS: Activated AQP4, endoplasmic reticulum stress and p66Shc were actively implicated in the inflammation and these were suppressed by argirein, and its activity is favorable due to synergism in combination with L-arginine.

Simultaneous determination of four bioactive compounds in Verbena officinalis L. by using high-performance liquid chromatography.

BACKGROUND: Verbena officinalis L., called mabiancao in Chinese, is derived from the aerial part of Herba Verbanae. It is a traditional Chinese medicine commonly used in China and northern Europe, which is widely used for clearing away heat and detoxicating, promoting blood circulation, and removing blood stasis. This paper describes a sensitive and specific assay for the determination of four bioactive compounds in V. officinalis L. MATERIALS AND METHODS: In this paper, the four components were separated on an Agilent Zorbax Extend C(18) column (250 mm × 4.6 mm × 5 µm) and detected by a diode array detector. The mobile phase was composed of (a) aqueous phosphoric acid (0.1%, v/v) and (b) acetonitrile using a gradient elution. Analytes were performed at 30°C with a flow rate of 1.0 ml/min and UV detection at 203, 238, and 331 nm. RESULTS: All calibration curves showed good linear regression (r(2) ≥ 0.9999) within tested ranges. Overall intra- and interday variations were less than 1.84%, and the average recoveries were 97.32-102.81% for analytes. DISCUSSION AND CONCLUSION: The proposed method would be sensitive enough and reliable for comprehensive quality control for clinical use and modernization of V. officinalis L.

Global detection and analysis of volatile components from sun-dried and sulfur-fumigated herbal medicine by comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry.

The sulfur-fumigation process can induce changes in the contents of volatile compounds and the chemical transformation of herbal medicines. Although literature has reported many methods for analyzing volatile target compounds from herbal medicine, all of them are largely limited to target compounds and sun-dried samples. This study provides a comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (GC×GC-TOF/MS) method based on a chemical profiling approach to identify non-target and target volatile compounds from sun-dried and sulfur-fumigated herbal medicine. Using Chrysanthemum morifolium as a model herbal medicine, the combined power of this approach is illustrated by the identification of 209 and 111 volatile compounds with match quality >80% from sun-dried and sulfur-fumigated Chrysanthemum morifolium, respectively. The study has also shown that sulfur-fumigated samples showed a significant loss of the main active compounds and a more destructive fingerprint profile compared to the sun-dried ones. 50 volatile compounds were lost in the sulfur-fumigated Chrysanthemum morifolium sample. The approach and methodology reported in this paper would be useful for identifying complicated target and non-target components from various complex mixtures such as herbal medicine and its preparations, biological and environmental samples. Furthermore, it can be applied for the intrinsic quality control of herbal medicine and its preparations.