Mortality Study of Patients with Omicron Infection Before and After the Implementation of the New Crown Standard.

Objective: To investigate the mortality rate of patients with Omicron infection before and after the implementation of the new crown standard, and to evaluate the impact of new treatment protocols on the mortality rate of patients with Omicron infection. Methods: Clinical data of 1419 Omicron-infected patients treated in our hospital from April 10, 2022 to June 3, 2022 were collected(Patients diagnosed with Omicron infection who met the diagnostic criteria in the "Diagnosis and treatment protocol for novel coronavirus pneumonia (trial version 9)"15 and whose nasal/pharyngeal swab samples were typed as Omicron variants by laboratory viral genotyping). They were divided into the observation group (April 25 2022 - June 3 2022) and the control group (April 10 2022 - April 24 2022) before and after the implementation criteria. Clinical data of 1419 patients were collected and compared between the two groups on whether to use anticoagulant drugs, whether to use antiplatelet drugs, gender, whether to use new drugs of thymosin/thymus method, age, whether to use herbal medicine, whether to use Fuzheng prescription, blood routine, liver function, kidney function indicators, mortality of patients. Results: A total of 1419 patients were initially selected; 501 patients with incomplete information were excluded, and finally, 918 patients were included. According to the time period before and after the application criteria, they were divided into an observation group (586 cases) and a control group (332 cases). There were no statistically significant differences in gender, age, antiplatelet drug use, and herbal medicine use between the two groups (P < .05). However, there were significant differences in the use of anticoagulant drugs, thymidine/thymidine drugs, and Fu Zhengfang between the two groups. It was statistically significant that the mortality rate in the observation group (2.39)% was significantly lower than that in the control group (5.12)%. P < .05 White blood cell count, red blood cell ratio, lymphocyte count, hemoglobin, neutrophil count, and neutrophil ratio were not significantly different between the two groups (P < .05) .In comparison to the control group (4.92±8.00)10^9/L, the platelet count in the observation group (4.77±3.41)109/L was considerably lower. The difference was statistically significant (P < .05). The comparison of total bilirubin, total protein values and alkaline phosphatase values between the two groups was not significant (P < .05). In the observation group, albumin (38.71±6.39) g/L, glutamate transaminase (23.93±26.03) U/L, glutathione transaminase (26.12±25.53) U/L, gamma-glutamyltransferase (34.28±52.3) U/L, globulin values (28.13±5.55) g/L were significantly lower than those of the control group (36.66±7.08) g/L, (30.36±65.77) U/L, (33.29±49.72) U/L, (43.76±80.23) U/L, (29.85±5.67) g/L, the difference was statistically significant (P < .05). Between the two groups, there were no significant differences in the values of uric acid or creatinine (P > .05). Levels and uric acid readings did not differ significantly, P > .05. The difference between the urea values of the observation group (7.44±6.34 mmol/L) and the control group (8.75±7.51 mmol/L) was statistically significant (P < .05). Conclusion: After the implementation of the treatment protocol for COVID-19 (Trial Version 9), the number of death cases among patients with Omicron variant infection has significantly decreased. The treatment protocol is safe and feasible and can be widely applied in clinical settings..And it will further promote the development and administration of vaccines to prevent and control the spread of the novel coronavirus, reducing the occurrence of patients and death cases.

Integration of metabolomics and transcriptomics to reveal the mechanism of Gerberae piloselloidis herba in alleviating bronchial asthma.

ETHNOPHARMACOLOGICAL RELEVANCE: Gerberae Piloselloides Herba (GPH) is derived from Gerbera piloselloides (Linn.) Cass. It is a commonly used traditional medicine in China, featured by its special bioactivities as antitussive, expectorant, anti-asthma, anti-bacterial and anti-tumor. It is often used as an effective treatment for cough and sore throat as well as bronchial asthma (BA) in China. It was demonstrated in our previous studies that GPH exerted significant effects on the treatment of BA, but its underlying mechanism remains unclear. AIM OF THE STUDY: This study was aimed at revealing the mechanism through which GPH protects against BA. MATERIALS AND METHODS: The protective effect of GPH against BA was evaluated in a mouse model of BA induced by ovalbumin. Through integrated metabolomics and transcriptomics analysis, the most critical pathways were discovered. The effects of GPH in regulating these pathways was verified through molecular biology experiments and molecular docking. RESULTS: GPH have anti-BA effects. In plasma and lung tissue, 5 and 17 differentially expressed metabolites (DEMs), respectively, showed a reversed tendency in the GPH group compared with the model group; apart from gamma-aminobutyric acid and butyrylcarnitine, these DEMs might aid in BA diagnosis. The DEMs were involved primarily in the regulation of lipid metabolism, followed by glucose metabolism and amino acid metabolism. Transcriptomic analysis indicated that GPH modulated 268 differentially expressed genes (DEGs). Integration analysis of metabolomics and transcriptomics revealed that GPH might regulate the PPAR signaling pathway, thus affecting the expression of key gene targets such as Cyp4a12a, Cyp4a12b, Adh7, Acaa1b and Gpat2; controlling fatty acid degradation, unsaturated fatty acid biosynthesis, glycerophospholipid metabolism and other lipid metabolic pathways; and ameliorating BA. This possibility was confirmed through reverse-transcription quantitative polymerase chain reaction, western blotting, immunofluorescence and molecular docking. CONCLUSION: GPH was found to activate the PPAR signaling pathway, decrease the levels of Cyp4a12a and Cyp4a12b, and increase the levels of Adh7, Acaa1b and Gpat2, thereby regulating lipid metabolism disorder, decreasing the generation of inflammatory mediators and limiting lung injury.

Dietary Taurine Intake Affects the Growth Performance, Lipid Composition, and Antioxidant Defense of Juvenile Ivory Shell (Babylonia areolata).

In this study, an eight-week feeding trial was performed to investigate the effects of different taurine supplementation levels (0.0% as control, 1.0%, 1.5%, 2.0%, 2.5%, and 3.0%) on the growth performance, lipid composition, and antioxidant ability in juvenile ivory shells Babylonia areolata. The results showed that taurine supplementation significantly improved the specific growth rates (SGRs) and survival rates of ivory shell (except the survival rate in the 3.0% taurine diet group) (p < 0.05). The SGRs showed an increasing and then decreasing tendency with increasing dietary taurine supplementation, and the highest value was observed in the 2.0% taurine diet (2.60%/d). The taurine content in the muscle of ivory shells fed taurine-supplemented diets significantly increased when compared to the control group (p < 0.05). The profiles of C22:2n6 in the muscle of ivory shells fed taurine-supplemented diets were significantly higher than in the control group (p < 0.05), and the highest values were observed in the 2.0% taurine supplementation group. The high-density lipoprotein cholesterol (HDL-C) content in the hepatopancreas showed an increasing and then decreasing tendency with increasing dietary taurine supplementation, while the low-density lipoprotein cholesterol (LDL-C) concentration showed a decreasing tendency. Furthermore, the activities of pepsin and lipase in both the intestine and hepatopancreas significantly increased at moderate taurine supplementation levels compared to the control group (p < 0.05). Accordingly, obvious increases in the histological parameters in the intestine of ivory shells fed taurine-supplemented diets were also found. As for the antioxidant ability, the activities of the total antioxidant capacity (T-AOC) and superoxide dismutase (SOD) showed an increasing and then decreasing tendency with increasing dietary taurine supplementation, and the highest values were observed in the 1.0% and 1.0-2.0% taurine supplementation groups, respectively; the malondialdehyde (MDA) contents significantly decreased with increasing dietary taurine supplementation (p < 0.05). The taurine intake affected the expression of four appetite-related genes in the hepatopancreas, in which orexin and NPY showed an increasing and then decreasing tendency, while leptin and cholecyatoklnin decreased with increasing dietary taurine supplementation. In conclusion, moderate taurine supplementation in an artificial diet (about 1.5-2.0%) could improve the growth performance and antioxidant ability and change the lipid composition of juvenile ivory shells.

Comparative pharmacokinetics of 11 components from the active part of Gerberae Piloselloidis Herba after oral administration in control and asthmatic mice.

Gerberae Piloselloidis Herba, a traditional Chinese medicine, is often employed to treat such lung-related diseases as coughs, asthma, and pulmonary carbuncles in southwest China. Our previous study demonstrated that its active fraction, prepared from Gerberae Piloselloidis Herba, exerts an obvious beneficial effect on asthma. However, the pharmacokinetics of its major constituents remain unclear. Therefore, an ultra-performance mass spectrometry-electrospray ionization-tandem mass spectrometry method was successfully established to simultaneously perform the pharmacokinetics of the main 11 components of the active fraction between normal and ovalbumin-induced asthmatic mice. Compared to the normal group, in asthmatic mice the peak concentration of arbutin, marmesin, caffeoylquinic acids, and flavonoid glycosides clearly increased, while for luteolin it significantly declined; the area under the curve for arbutin and luteolin showed an increase, but the values of marmesin, caffeoylquinic acids, and flavonoid glycosides revealed a decline; the peak time for arbutin, caffeoylquinic acids and flavonoid glycosides decreased, while for marmesin and luteolin it significantly augmented; apart from marmesin, the half-life for all compounds shortened significantly. It is indicated that the pathology of asthma could lead to an alteration in the pharmacokinetic profiles of the 11 components in plasma, providing a reference for further exploration of the pharmacodynamic basis of the anti-bronchial effect of Gerberae Piloselloidis Herba.

Treatment effects of Radix ginseng-Schisandra chinensis herb pair on Alzheimer's disease: An investigation of MS-based metabolomics investigation.

Traditional Chinese medicine (TCM) plays a synergistic and comprehensive pharmacodynamic role of multi-channel and multi-target through its multi-components, showing unique therapeutic advantages in chronic and multi-gene complex diseases. Herb pair is a unique combination of two relatively fixed herbs, which embodies the integrity of TCM theory. In this study, untargeted fecal metabolomics based on MS was used to investigate the action mechanism of Radix ginseng and Schisandra chinensis (GS) herb pair on the complex disease of Alzheimer's disease (AD), and further analyze the therapeutic effects of small molecular components and saccharides of GS on AD. Quantitative analysis of bile acids (BAs) and short-chain fatty acids (SCFAs) further verified the conclusion of untargeted metabolomics. The results of the pharmacodynamics evaluation showed that the AD model was successfully constructed, and each TCM group had a different degree of improvement compared with the AD group. PCA analysis based on untargeted fecal metabolomics showed that the metabolic disorders in AD rats changed significantly over time, and there were different degrees of callback in each TCM group. The result indicated that the GS herb pair can regulate metabolic disorders of AD. Further analysis of therapeutic biomarkers showed that GS mainly regulated the metabolism of bile acid biosynthesis, sphingolipid metabolism, porphyrin and chlorophyll metabolism, etc. to treat AD. This study will help to further understand the pathogenesis of AD from metabolomics, and provide beneficial support for the further study of GS and the clinical treatment of complex diseases with TCM.

[Intestinal absorption characteristics of root tuber of Cynanchum auriculatum extract in normal and functional dyspepsia model rats via everted intestine sac model].

The study investigated the difference of intestinal absorption characteristics of root tuber of Cynanchum auriculatum extract between normal and functional dyspepsia(FD) model rats with everted intestine sac model.The content of syringic acid, scopoletin, caudatin, baishouwu benzophenone, qingyangshengenin and deacyhmetaplexigenin in the C.auriculatum extract in different intestinal segments was detected by UPLC-MS/MS.The cumulative absorption amount(Q) and absorption rate constant(K_a) of the six chemical constituents were calculated.The results showed that the six components could be absorbed into the intestinal sac and were unsaturated, which indicated that the absorption mechanism of scopoletin was active transport in the intestine, while that of the other five components were passive diffusion.For normal group, the syringic acid and baishouwu benzophenone in ileum, qingyangshengenin and deacyhmetaplexigenin in ileum and duodenum, and caudatin in colon were well absorbed and scopoletin at low, medium and high concentrations was found excellent absorption in jejunum, ileum, and colon, respectively.Whereas the best absorption site of each component was ileum in model group.The absorption characteristics of each component between normal group and model group were complex at different concentrations, showing inconsistent tendency of absorption, which suggested that the components of root tuber of C.auriculatum extract were selectively absorbed in small intestine, and the absorption characteristics of the six components could be changed under FD status.This study provided theoretical basis for the clinical drug application and development of root tuber of C.auriculatum.

Molecular Characterization, Tissue Distribution Profile, and Nutritional Regulation of acsl Gene Family in Golden Pompano (Trachinotus ovatus).

Long chain acyl-coA synthase (acsl) family genes activate the conversion of long chain fatty acids into acyl-coA to regulate fatty acid metabolism. However, the evolutionary characteristics, tissue expression and nutritional regulation of the acsl gene family are poorly understood in fish. The present study investigated the molecular characterization, tissue expression and nutritional regulation of the acsl gene family in golden pompano (Trachinotus ovatus). The results showed that the coding regions of acsl1, acsl3, acsl4, acsl5 and acsl6 cDNA were 2091 bp, 2142 bp, 2136 bp, 1977 bp and 2007 bp, encoding 697, 714, 712, 659 and 669 amino acids, respectively. Five acsl isoforms divided into two branches, namely, acsl1, acsl5 and acsl6, as well as acsl3 and acsl4. The tissue expression distribution of acsl genes showed that acsl1 and acsl3 are widely expressed in the detected tissues, while acsl4, acsl5 and acsl6 are mainly expressed in the brain. Compared to the fish fed with lard oil diets, the fish fed with soybean oil exhibited high muscular C18 PUFA contents and acsl1 and acsl3 mRNA levels, as well as low muscular SFA contents and acsl4 mRNA levels. High muscular n-3 LC-PUFA contents, and acsl3, acsl4 and acsl6 mRNA levels were observed in the fish fed with fish oil diets compared with those of fish fed with lard oil or soybean oil diets. High n-3 LC-PUFA levels and DHA contents, as well as the acsl3, acsl4 and acsl6 mRNA levels were exhibited in the muscle of fish fed diets with high dietary n-3 LC-PUFA levels. Additionally, the muscular acsl3, acsl4 and acsl6 mRNA expression levels, n-3 LC-PUFA and DHA levels were significantly up-regulated by the increase of dietary DHA proportions. Collectively, the positive relationship among dietary fatty acids, muscular fatty acids and acsl mRNA, indicated that T. ovatus Acsl1 and Acsl3 are beneficial for the C18 PUFA enrichment, and Acsl3, Acsl4 and Acsl6 are for n-3 LC-PUFA and DHA enrichment. The acquisition of fish Acsl potential function in the present study will play the foundation for ameliorating the fatty acids nutrition in farmed fish products.

Chemical profiling and quantification of multiple components in Jin-Gu-Lian capsule using a multivariate data processing approach based on UHPLC-Orbitrap Exploris 240 MS and UHPLC-MS/MS.

The Jin-Gu-Lian capsule, a Chinese Miao herbal compound, is widely used to treat rheumatoid arthritis. In this study, a rapid, selective, and sensitive UHPLC-Orbitrap Exploris 240 MS method was developed to analyze the chemical composition of Jin-Gu-Lian capsules. A total of 88 compounds were identified, including 23 flavonoids, 23 organic acids, 14 phenylpropanoids, 12 phenols, eight alkaloids, four terpenes, three quinones, and one ketone. Among these, 21 compounds were clearly detected based on a comparison with reference standards and selected as quality control markers. Thereafter, these compounds were simultaneously determined in the Jin-Gu-Lian capsules. The established method was successfully validated and applied for the simultaneous determination of 21 biologically active compounds in Jin-Gu-Lian capsules of 27 sample batches. Quantitative data of the analytes were analyzed using multivariate statistical analysis to determine the quality of the Jin-Gu-Lian capsules. Four compounds (JGLC6 [salidroside], JGLC8 [chlorogenic acid], JGLC12 [liriodendrin], JGLC19 [quercetin]) were identified as chemical markers for quality control of Jin-Gu-Lian capsules. Altogether, the established method was validated as a novel and efficient tool, that can be used for rapid analysis of Jin-Gu-Lian capsules. Accordingly, this study serves as a reference for scientific research on traditional Chinese and ethnic medicine.

Protective effects on ovalbumin-induced mouse asthma models and qualitative and quantitative analysis of multiple compounds in Gerberae Piloselloidis Herba.

Gerberae Piloselloidis Herba is widely used to treat cough and asthma in China. However, its effects on allergic asthma as related to its chemical compositions have not been fully elucidated, and there is a scarcity of methods to determine multi-component contents for quality control. In this study, protective effects of Gerberae Piloselloidis Herba on ovalbumin-induced asthma models were investigated, while qualitative and quantitative analyses of multiple constituents in Gerberae Piloselloidis Herba were conducted by using an ultrahigh-performance liquid chromatography-Q Exactive hybrid quadrupole-orbitrap high-resolution accurate mass spectrometry and an ultrahigh-performance liquid chromatography-photodiode array detection. The results showed that Gerberae Piloselloidis Herba could significantly mitigate asthma symptoms, reduce eosinophils counts in the bronchoalveolar lavage fluid, as well as decrease IgE, IL-5, and IL-13 concentration, and inflammatory cellular infiltration in lung tissues. A total of 51 compounds were tentatively identified, in which the content of 10 representative compounds was determined in 24 batches of Gerberae Piloselloidis Herba by using an ultrahigh-performance liquid chromatography method with good linearity, precision, repeatability, accuracy, and stability. This research presents a comprehensive strategy combining biological activity evaluation with chemical profiling, providing a useful and comprehensive reference for further application and quality control of Gerberae Piloselloidis Herba.

[Mechanism of Liangfu Dropping Pills in treatment of gastrointestinal diseases based on plasma pharmacochemistry and network pharmacology].

To study the active chemical components and mechanism of Liangfu Dropping Pills in treatment of gastrointestinal diseases. The UHPLC-Q-TOF-MS method was employed to analyze the components of Liangfu Dropping Pills in plasma. The protein targets of the absorbed compounds were predicted in the TCMSP database and the SwissTargetPrediction database. The targets associated with gastrointestinal diseases were collected from OMIM, CTD, GeneCards, and DrugBank. The common target genes between components and diseases were screened out for the building of protein-protein interaction(PPI) network in the STRING database. Metascape was used to carry out gene ontology(GO) and Kyoto encyclopedia of genes and genomes(KEGG) pathway enrichment analysis. Cytoscape was employed to construct the PPI network diagram and absorbed component-target network diagram. The molecular docking between the components absorbed in blood and potential key targets was performed by AutoDock vina 4.2.6 to screen and verify the main active components and targets. Twelve chemcial components were identified in Liangfu Dropping Pills, in which four components were absorbed in blood, including galangin, rhamnocitrin, galangin 3-methyl ether, and α-cyperone. These components acted on 189 common targets which were mainly involved in the cell responses to nitrogen compounds, organic cyclic compounds, and hormones, and enriched in the PI3 K-Akt signaling pathway, Foxo signaling pathway, and IL-17 signaling pathway. Molecular docking results showed that the four components had strong affinity with core targets. The material basis of Liangfu Dropping Pills treating gastrointestinal diseases may be galangin, rhamnocitrin, galangin 3-methyl ether, and α-cyperone. This study provides a theoretical basis for further development and application of Liangfu Dripping Pills.

[Development of Self Training Device for Lung Function Compliance Guided by Meridians].

OBJECTIVE: To develop a self deep breathing training device which can improve lung function compliance and blood oxygen saturation. METHODS: The device consists of four parts:flow tube, measuring cylinder, mobile phone holder and meridian guidance audio-visual synthesis training software. The flow tube measures the flow rate of inhaled gas, the metering cylinder measures the total amount of inhaled gas, and the mobile phone rack is equipped with a mobile phone storing the meridian guidance audio-visual synthesis training software. RESULTS: The device is reasonable in structure and flexible in operation, which can meet the requirements of self deep inspiration training under the guidance of training module. CONCLUSIONS: Deep inspiration training under the guidance of guidance training module can form "deep and slow" abdominal breathing, and then improve lung function.

Pharmacokinetic and metabolomics approach based on UHPLC-MS to evaluate therapeutic effect of lignans from S. Chinensis in alzheimer's disease.

Lignans from Schisandra chinensis (Turcz.) Baill (LFS) has been proved to improve impaired cognitive ability thereby show potential in treating Alzheimer's disease (AD). In this study, UHPLC-Q-TOF-MS and UHPLC-QQQ-MS were adopted cooperatively to establish a method synchronously detecting 10 kinds of LFS monomers in rat plasma samples. And this method was further applied for pharmacokinetic study to compare the metabolism of LFS in normal and AD rats. The results indicated that AD rats showed an observably better absorption of LFS compared to normal rats. Based on time-varying plasma concentration of LFS, metabolomics was used to establish a plasma concentration-time-endogenous metabolite connection. In total 54 time-varying endogenous metabolites were screened and most of which were closely associated with AD. And LFS exerted a concentration dependent regulating effect to most of these metabolites. Through biomarker related pathways and biological function analysis, LFS might treat AD through neuroprotection, antioxidant damage and regulating the metabolism of unsaturated fatty acids. This is the first study connecting LFS absorbtion and endogenous metabolite changes with the time lapse. The pharmacokinetics and metabolic profile differences between normal and AD rats were firstly investigated as well. This study provides a novel perspective in exploring the effect and mechanism of LFS in treating AD.

Mass spectrometry-based urinary metabolomics for exploring the treatment effects of Radix ginseng-Schisandra chinensis herb pair on Alzheimer's disease in rats.

Herb pairs are the unique combinations of two relatively fixed herbs, intrinsically convey the basic idea of traditional Chinese medicine prescriptions. The compatibility of Radix ginseng and Schisandra chinensis has been used in traditional Chinese medicine for treating Alzheimer's disease for many years. However, there are few studies on Radix ginseng-Schisandra chinensis herb pair, and the underlying action mechanism is still unclear. In this study, the mechanism of Radix ginseng-Schisandra chinensis herb pair on Alzheimer's disease was investigated by using the mass spectrometry-based urinary metabolomics method. Sixteen urinary endogenous metabolites were identified as potential biomarkers. Meanwhile, 10 biomarkers were quantified with tandem mass spectrometry. The study result showed that the brain pathologic symptoms of model rats were improved and the potential biomarkers were adjusted backward significantly after the herb pair administration. The metabolic pathways linked to the herb pair-regulated endogenous biomarkers included phenylalanine and tyrosine metabolism, tryptophan metabolism, purine metabolism, and so on. The above metabolic pathways reflected that Radix ginseng-Schisandra chinensis herb pair mainly regulates abnormal energy metabolism, reduces inflammation, and regulates gut microbiota and neurotransmitters in the treatment of Alzheimer's disease.

Comparative analysis of excretion of six major compounds of Polygonum orientale L. extract in urine, feces and bile under physiological and myocardial ischemia conditions in rats using UPLC-MS/MS.

Polygonum orientale L. is a traditional Chinese medicine having extensive pharmacological activities including antimyocardial ischemia (MI) injury properties. Isoorientin, orientin, vitexin, quercitrin, astragalin and protocatechuic acid are the main compounds in P. orientale extract. The aim of this study was to establish an ultra-performance liquid chromatography-tandem mass spectrometry method for the determination of the content of these compounds in urine, feces and bile samples simultaneously and application of the method in a comparative excretion study in normal and MI model rats after oral administration of P. orientale extract. Chromatographic seperation was conducted on an Agilent Eclipse Plus C18 column with the mobile phase consisting of 0.1% formic acid-acetonitrile and 0.1% formic acid-water. Negative ion multiple reaction monitoring mode was used for quantification. The six compounds had good linearity (r ≥ 0.9921) and acceptable accuracy ranging from 10.10 to -5.82% The relative standard deviations of within-day precision and inter-day precision were <10.45 and 13.44%, respectively. The extraction recovery of the six analytes ranged from 80.31 to 101.47% and the matrix effect was 82.56-102.88%, indicating that the preparations of sample collected form urine, feces and bile were stable throughout analysis. The excretion amount of the six analytes increased in both normal and MI model rats' urine, feces and bile in a 24 h period and became stable between 36 and 48 h after administration. The total excretion rate of six compounds was <5% in urine, feces and bile of normal and MI model rats. The excretion peak period for all compounds in MI rats was slower than that in normal rats. This excretion study provides insights for further application and research on P. orientale.

Efficacy of water fraction from Dioscorea cirrhosa on oxidative stress and apoptosis in H9c2 cardiomyocytes induced by H2O2.

OBJECTIVE: To investigate the efficacy of water fraction from Dioscorea cirrhosa (WF) on oxidative damage and apoptosis of cardiomyocytes induced by H2O2, and to study its mechanism. METHODS: Cell viability was measured by the MST assay kit. The content of malondialdehyde (MDA), release of lactate dehydrogenase (LDH) and activity of catalase (CAT) and superoxide dismutase (SOD) were detected by biochemical kit. The content of reactive oxygen species (ROS) was assessed by nonfluorescent probe 2' ,7'-dichlorofluorescin diacetate (DCFH-DA). JC-1 was used to analyze the mitochondrial membrane potential (mtΔΨ) and Annexin-V-FITC/PI staining was applied to assess apoptosis of H9c2 by flow cytometry. Moreover, the expression of B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X (Bax), caspase-3, caspase-9, cleaved-caspase-3 and cleaved-caspase -9 proteins was determined by western blot analysis. RESULTS: WF increased cell viability and decreased LDH leakage in H9c2 cells exposed to H2O2. WF treatment decreased ROS and MDA level, enhanced SOD and CAT activities, improved mtΔΨ and inhibited apoptosis. Western blot analysis demonstrated that the ratio of Bcl-2/Bax was increased and the expression cleaved-caspase-3, caspase-3, cleaved-caspase-9 and caspase-9 were decreased in group treated with WF. CONCLUSION: WF protects H9c2 myocardial cells on H2O2-induced oxidative stress and apoptosis by scavenging ROS, improving antioxidant capacity, protecting mitochondrial and regulating the proteins expression related to apoptosis.

Herb-drug interaction: The effect of Polygonum capitatum extract on pharmacokinetics of levofloxacin in rats.

Polygonum capitatum is a traditional medicinal plant of the Miao people and has been used to treat a variety of urological disorders in China for many years. Preparations made from water-soluble P. capitatum extracts, Relinqing® granules, are often used in combination with levofloxacin to treat urinary tract infections, and have demonstrated better clinical efficacy than either drug alone. As there is no information on the pharmacokinetics of both drugs after co-administration, a sensitive and reliable ultra-performance liquid chromatography-tandem mass spectrometry method was developed and validated to study the potential herb-drug interactions between P. capitatum and levofloxacin. This analytical method delivered high levels of specificity, recovery, accuracy, precision and preserved sample stability. When applied to study pharmacokinetic interactions after oral co-administration of P. capitatum extract (1.86 g kg-1) and levofloxacin (42 mg kg-1) in rats, the results indicated significant reductions in Cmax and AUC0-24h of levofloxacin, and significant increases in MRT, Tmax, CLz/F and Vz/F. Moreover, pretreatment with P. capitatum extract orally did not alter the intravenous pharmacokinetics of levofloxacin. Combined and compared oral pharmacokinetic parameters, suggesting that the interacting targets might localized in the intestine during absorption. Overall, the results revealed a potential herb-drug interaction between P. capitatum and levofloxacin.

Gukang Capsule Promotes Fracture Healing by Activating BMP/SMAD and Wnt/ß-Catenin Signaling Pathways.

BACKGROUND: Gukang capsule (GKC) is a traditional Chinese medicine formulation which has been used extensively in the clinical treatment of bone fractures. However, the mechanisms underlying its effects on fracture healing remain unclear. METHODS: In this study we used a rabbit radius fracture model, and we measured the serum content of bone alkaline phosphatase (ALP), calcium, and phosphorus and examined pathology of the fracture site as indicators of the fracture healing effects of GKC. SaOS-2 human osteosarcoma cells were used to measure (i) ALP activity, (ii) ornithine transcarbamylase (OTC), calcium, and mineralization levels, (iii) the expression of osteogenic-related genes, that is, runt-related transcription factor 2 (RUNX2), bone morphogenetic protein 2 (BMP2), collagen I (COL-I), osteopontin (OPN), OTC, and osterix (Osx), and (iv) the expression of key proteins in the Wnt/ß-catenin and BMP/SMAD signaling pathways to study the mechanisms by which GKC promotes fracture healing. RESULTS: We found that GKC effectively promotes radius fracture healing in rabbits and enhances ALP activity, increases OTC and calcium levels, and stimulates the formation of mineralized nodules in SaOS-2 cells. Moreover, COL-I, OTC, Osx, BMP2, and OPN expression levels were higher in SaOS-2 cells treated with GKC than control cells. GKC upregulates glycogen synthase kinase 3ß (GSK3ß) phosphorylation and Smad1/5 and ß-catenin protein levels, thereby activating Wnt/ß-catenin and BMP/Smad signaling pathways. Inhibitors of the Wnt/ß-catenin and BMP/Smad signaling pathways (DKK1 and Noggin, respectively) suppress the osteogenic effects of GKC. CONCLUSIONS: GKC promotes fracture healing by activating the Wnt/ß-catenin and BMP/Smad signaling pathways and increasing osteoprotegerin (OPG) secretion by osteoblasts (OBs), which prevents receptor activator of nuclear factor kappa B ligand (RANKL) binding to RANK.

Herb-Drug Interaction: Application of a UPLC-MS/MS Method to Determine the Effect of Polygonum capitatum Extract on the Tissue Distribution and Excretion of Levofloxacin in Rats.

Polygonum capitatum has unique curative effects on the urinary system. In fact, many Polygonum capitatum-based preparations are currently used in the clinic. In China, the combination of levofloxacin (LVFX) with a Chinese herbal preparation derived from Polygonum capitatum has been used for the clinical treatment of urinary system diseases, which can improve the curative effects and reduce the side effects of LVFX. However, the herb-drug interaction (HDI) between these drugs has not been reported and the effect of Polygonum capitatum on the in vivo process of LVFX is unclear. In this article, a sensitive ultraperformance liquid chromatography-tandem mass spectroscopy (UPLC-MS/MS) method was developed to evaluate the effects of the combined application of LVFX and the Polygonum capitatum extract on tissue distribution and excretion. Thereafter, the method was validated for selectivity, accuracy, precision, linearity, lower limit of quantification (LLOQ), dilution integrity, recovery, and matrix effect. Based on tissue distribution, LVFX could diffuse into all of the tested tissues, with significant differences in the content of each tissue between the coadministration group and single administration group. At 48 h after the combination was orally administered, the urinary cumulative excretion of LVFX decreased from 20.69% to 11.84% while its fecal cumulative excretion decreased from 26.08% to 13.28%. Our results suggest that a drug interaction exists between the two drugs in the process of distribution and excretion. This study provides important experimental evidence for further studies on the clinical efficacy and mechanism of the Polygonum capitatum extract and LVFX.

[Study on metabolites of Laportea bulbifera extract in rat feces based on UHPLC-Q-TOF-MS~E technique].

This project is to study the metabolites of Laportea bulbifera extract in rat feces. After the SD rats were gavaged with the extract(136 g·kg~(-1), according to the crude drug dose), the metabolites in their feces were detected by UHPLC-Q-TOF-MS~E technique, and the obtained mass spectrometry data was combined with UNIFI software for prediction. The prototype components and metabolites in rat feces were identified with reference materials and related literature. A total of 43 metabolites were identified(including 8 prototype components and 35 metabolites). The metabolic pathways mainly include monocaffeoylquinic acid(hydrogenation reduction, ring-opening cracking, sulfation, hydroxylation, glucuronidation), quercetin(O-C2 bond ring-opening cleavage, C2-C3 double bond reduction, rutin carbonylation) and so on. The metabolites and metabolic process of L. bulbifera extract in rat feces were clarified, which provided a basis for the study of the active substances and its mechanism of action.

A Series of Novel HDAC Inhibitors with Anthraquinone as a Cap Group.

Although anthraquinone derivatives possess significant antitumor activity, most of them also displayed those side effects like cardiotoxicity, mainly owing to their inhibition of topoisomerase II of DNA repair mechanisms. Our raised design strategy by switching therapeutic target from topoisomerase II to histone deacetylase (HDAC) has been applied to the design of anthraquinone derivatives in current study. Consequently, a series of novel HDAC inhibitors with a tricylic diketone of anthraquinone as a cap group have been synthesized. After screening and evaluation, compounds 4b, 4d, 7b and 7d have displayed the comparable inhibition in enzymatic activity and cell proliferation than that of Vorinostat (SAHA). Notably, compound 4b showed certain selectivity of antiproliferative effects on cancer cell lines over non-cancer cell lines.