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OBJECTIVE@#To compare the therapeutic efficacy of governor vessel moxibustion combined with fluoxetine hydrochloride capsule, simple fluoxetine hydrochloride capsule and placebo moxibustion combined with fluoxetine hydrochloride capsule for mild to moderate depression with kidney-yang deficiency.@*METHODS@#A total of 126 patients with mild to moderate depression with kidney-yang deficiency were randomized into a governor vessel moxibustion group (42 cases, 2 cases dropped off), a western medication group (42 cases, 1 case dropped off) and a placebo moxibustion group (42 cases, 1 case dropped off). The western medication group was given fluoxetine hydrochloride capsule orally, 20 mg a time, once a day. On the basis of the treatment in the western medication group, governor vessel moxibustion was applied from Dazhui (GV 14) to Yaoshu (GV 2) in the governor vessel moxibustion group, once a week; placebo moxibustion was applied in the placebo moxibustion group, once a week. Treatment of 8 weeks was required in the 3 groups. Before and after treatment, the scores of Hamilton depression scale-17 (HAMD-17), Asberg's rating scale for side effects (SERS) and TCM clinical symptom were compared, and the clinical efficacy was evaluated.@*RESULTS@#After treatment, the scores of HAMD-17, SERS and TCM clinical symptom were decreased compared before treatment in the 3 groups (P<0.05), the decrease ranges of above scores in the governor vessel moxibustion group were larger than those in the western medication group and the placebo moxibustion group (P<0.05). The total effective rate was 92.5% (37/40) in the governor vessel moxibustion group, which was higher than 75.6% (31/41) in the western medication group and 80.5% (33/41) in the placebo moxibustion group (P<0.05).@*CONCLUSION@#Governor vessel moxibustion combined with fluoxetine hydrochloride capsule can improve the degree of depression and relieve the clinical symptoms in mild to moderate depression patients with kidney-yang deficiency, the efficacy is superior to simple fluoxetine hydrochloride capsule, and can reduce the fluoxetine hydrochloride capsule-induced adverse effect to a certain extent.
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Humans , Moxibustion , Yang Deficiency/drug therapy , Depression/etiology , Fluoxetine , Acupuncture Points , KidneyABSTRACT
Surface enhanced Raman spectroscopy (SERS) and confocal Raman microscopy are applied to investigate the structure and the molecular arrangement of sub-micron furosemide and polyvinylpyrrolidone(furosemide/PVP) particles produced by spray flash evaporation (SFE).Morphology,size and crystallinity of furosemide/PVP particles are analyzed by scanning electron microscopy (SEM) and X-ray powder diffraction (XRPD).Far-field Raman spectra and confocal far-field Raman maps of furosemide/PVP par-ticles are interpreted based on the far-field Raman spectra of pure furosemide and PVP precursors.Confocal far-field Raman microscopy shows that furosemide/PVP particles feature an intermixture of furosemide and PVP molecules at the sub-micron scale.SERS and surface-enhanced confocal Raman microscopy (SECoRM) are performed on furosemide,PVP and furosemide/PVP composite particles sputtered with silver (40 nm).SERS and SECoRM maps reveal that furosemide/PVP particle surfaces mainly consist of PVP molecules.The combination of surface and bulk sensitive analyses reveal that furosemide/PVP sub-micron particles are formed by the agglomeration of primary furosemide nano-crystals embedded in a thin PVP matrix.Interestingly,both far-field Raman microscopy and SECoRM provide molecular information on a statistically-relevant amount of sub-micron particles in a single microscopic map;this combination is thus an effective and time-saving tool for investigating organic sub-micron composites.
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Objective To establish a simultaneous detection of diclofenac sodium, fenbufen and rotundine hydrochloride illegally added in Yinhuang soft capsules by TLC-SERS. Methods The samples to be measured were placed on the silica gel plate, and the thin layer was developed with petroleum ether-ethyl acetate (3:5). Location detection was carried out under 254 nm ultraviolet lamp. Nano-silver colloidal solution was sprayed at each spot of separation according to the optimum conditions, and then qualitative identification was done by TLC-SERS. Results A method for simultaneous determination of diclofenac sodium, fenbufen and rotundine hydrochloride illegally added in Yinhuang soft capsule by TLC-SERS was established. And the minimum detection limits of three chemical constituents were determined. Conclusion TLC-SERS was a rapid, accurate and sensitive method for the simultaneous and rapid detection of diclofenac sodium, fenbufen and rotundine hydrochloride illegally added into Yinhuang soft capsule.
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Raman spectroscopy, amplified by surface-enhanced Raman scattering (SERS) nanoparticles, can provide an imaging modality due to its high molecular specificity, high sensitivity, and negligible autofluorescence. The basis, composition, and methodologies developed for SERS nanoparticles are herein described. The research hotspots that are the focus in this paper are tumor imaging-guided theranostics and biosensing. The next breakthrough may be the development of biocompatible SERS nanoparticles and spectroscopic devices for clinical applications.
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Abstract The strong enhancement and localization of electromagnetic field in plasmonic systems have found applications in many areas, which include sensing and biosensing. In this paper, an overview will be provided of the use of plasmonic phenomena in sensors and biosensors with emphasis on two main topics. The first is related to possible ways to enhance the performance of sensors and biosensors based on surface plasmon resonance (SPR), where examples are given of functionalized magnetic nanoparticles, magnetoplasmonic effects and use of metamaterials for SPR sensing. The other topic is focused on surface-enhanced Raman scattering (SERS) for sensing, for which uniform, flexible, and reproducible SERS substrates have been produced. With such recent developments, there is the prospect of improving sensitivity and lowering the limit of detection in order to overcome the limitations inherent in ultrasensitive detection of chemical and biological analytes, especially at single molecule levels.
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Objective To develop a rapid method for the identification of inactivated C.albicans by surface-enhanced Raman spectroscopy (SERS).Methods Live C.albicans cultures were exposed to heating, formaldehyde and fungicidal drug (amphotericin B).The corresponding SERS spectra were acquired for the investigation and comparison.Results The spectra acquired with three different inactivation methods exhibited similar features of dead C.albicans, which showed significant difference from the spectra of the live culture.Conclusion This SERS method can identify the inactivated C.albicans rapidly.Hopefully it will provide a convenient tool for quick identification of other inactivated pathogenic microorganisms.
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Objective To establish a thin layer chromatography-surface-enhanced Raman scattering(TLC-SERS) method for the detection of dyed Croci Stigma.Method The dyed Croci Stigma was wetted by ethanol and pressed on TLC plate sprayed with Silver sol.The pressed zone was immediately detected by a portable Raman spectrometer.Factors including the concentration of ethanol, spraying time and amount of silver sol were investigated and optimized.Results The dyed Croci Stigma, stained by auramine O, new fuchsin, tartrazine and brilliant ponceau were successfully detected using the established method.Conclusion The combination of TLC and SERS technology provides a rapid, simple and sensitive detection method which is suitable for quick field tests.
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Surface enhanced Raman spectroscopy technology (SERS), using gold nanoparticles as a base, was developed for rapid and sensitive detection of virus strains. SERS can be used as a rapid and reliable method to distinguish the titers of viral replication. In the present study, we characterized H1N1 subtypes of influenza A virus strains in different conditions of pH or temperatures, while we analyzed data from SERS technology using gold nanoparticles as a base and cell cultures were employed to further confirm the data from virus strains. Origin8.0 was used to collect Raman spectra, smooth and homogenize data, and to contrast spectra. Our results indicated that the peaks of different virus strains in optimal environmental conditions (T=37 ℃/pH=7.2) reached ≥3 000. This criterion was verified by subsequent virological method. The present data indicate that the established SERS protocol can be used as a rapid and reliable method to distinguish the replication rate of virus, which can be further used in clinical samples.
Subject(s)
Gold , Hydrogen-Ion Concentration , Influenza A Virus, H1N1 Subtype , Nanoparticles , Spectrum Analysis, Raman , Temperature , Virus Cultivation , MethodsABSTRACT
A new medical research technology that combines surface enhanced Raman spectroscopy (SERS)with labeling immune technique is emerging with the development of SERS.This paper is intended to describe the principles, research progress and existing problems relating to SERS labeling immunoassay technology.We also summarize the research techniques for improving the sensitivity of SERS labeling immunoassay and the methods to eliminate nonspecific adsorption in SERS labeling immunoassay.Furthermore,the future development of SERS labeling immunoassay technology is discussed.
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Objective To develop a rapid SERS detection method based on monolithic column for detection of dye adul-terated natural indigo .Methods The dyes in natural indigo were extracted and mixed with silver colloid .The spectra were re-corded after applying the mixture solution to the monolithic column since the intertwined pores in monolithic column could con-tribute for the distribution of silver nanoparticles .Results SERS signals of malachite green dyed natural indigo at quantity as low as 500 μg/kg could be obtained .Conclusion This simple ,fast and specific SERS detection method based on monolithic col-umn could be used for rapid detection of stained natural indigo .
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Objective To establish a paper-based surface-enhanced Raman scattering (SERS) method for the detection of dyed K adsura longipedunculata Finet et Gagnep .Methods Supported silver nanoparticles on filter paper were synthesized simply by soaking method .In addition ,factors including enrichment ratio of silver nanoparticles ,the enhancement effect and sta-bility of the SERS device were investigated .Results The K adsura longipedunculata Finet et Gagnep ,dyed by Erythrosine or Acid Red at low concentration had been detected successfully .Conclusion Combined with the paper device and SERS ,the ap-proach was rapid and non-destructive which could be used to identification of dyed K adsura longipedunculata Finet et Gagnep .
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Objective To observe the clinical efficacy and reverse reactions of acupuncture combined with paroxetine hydrochloride in the treatment of mild or moderate depression. Methods The patients with mild or moderate depression (n=73) were randomly divided into control group (treated with paroxetine hydrochloride,n=33) and observation group (treated with acupuncture and paroxetine hydrochloride,n=40). The therapeutic course lasted for 6 weeks. The total score changes of Hamilton Depression Scale (HAMD) were observed before treatment and treated for 1, 2, 4 and 6 weeks. Rating Scale for Side Effects (SERS) was evaluated before treatment and treated for 2, 4, 6 weeks.Results The total effective rate of clinical efficacy in the observation group was 78.95% (30/38) and the control group was 68.75% (22/32), without significant difference between the two groups (P>0.05). The scores of HAMD decreased 4, 6 weeks after the treatment in the control group and 2, 4, 6 week after the treatment in the observation group compared with those in the same group before the treatment (P<0.05,P<0.01). There was a significant difference in HAMD scores between two groups after the treatment for 4 weeks (P<0.05). The scores of SERS showed a significant difference 4, 6 weeks after the treatment between the two groups (P<0.05).Conclusion Acupuncture can improve the curative effect of paroxetine hydrochloride and decrease its side effects in the treatment of depression.