Abstract：
:Serum metabolic profiling can identify the metabolites responsible for discrimination between doxycycline treated and untreated chronic obstructive pulmonary disease (COPD) and explain the possible effect of doxycycline in improving the disease conditions. 1H nuclear magnetic resonance (NMR)-based metabolomics was used to obtain serum metabolic profiles of 60 add-on doxycycline treated COPD patients and 40 patients receiving standard therapy. The acquired data were analyzed using multivariate principal component analysis (PCA), partial least-squares-discriminant analysis (PLS-DA), and orthogonal projection to latent structure with discriminant analysis (OPLS-DA). A clear metabolic differentiation was apparent between the pre and post doxycycline treated group. The distinguishing metabolites lactate and fatty acids were significantly down-regulated and formate, citrate, imidazole and l-arginine upregulated. Lactate and folate are further validated biochemically. Metabolic changes, such as decreased lactate level, inhibited arginase activity and lowered fatty acid level observed in COPD patients in response to add-on doxycycline treatment, reflect the anti-inflammatory action of the drug. Doxycycline as a possible therapeutic option for COPD seems promising.
journal_name
J Pharm Biomed Analjournal_title
Journal of pharmaceutical and biomedical analysisauthors
Singh B,Jana SK,Ghosh N,Das SK,Joshi M,Bhattacharyya P,Chaudhury Kdoi
10.1016/j.jpba.2016.09.034subject
Has Abstractpub_date
2017-01-05 00:00:00pages
103-108eissn
0731-7085issn
1873-264Xpii
S0731-7085(16)30707-5journal_volume
132pub_type
杂志文章,随机对照试验abstract：:As a vital therapeutic agent for Parkinson's disease, dosage control of levodopa has always been a major obstacle in ensuring efficacy and curbing side effects. Simple and fast electrochemical detection methods are the main force in this field. Here, we presented a differential dual-strip method based on the coulometr...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2020.113498
更新日期：2020-10-25 00:00:00
abstract：:Nanoformulations are complex systems where physicochemical properties determine their therapeutic efficacy and safety. In the case of nanovaccines, particle size and shape play a crucial role on the immune response generated. Furthermore, the antigen's integrity is also a key aspect to control when producing a nanovac...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2019.113017
更新日期：2020-02-05 00:00:00
abstract：:Forced degradation/stress degradation studies of ibrutinib drug were done in hydrolytic (acidic, alkaline and neutral), thermal, photolytic and oxidative degradation conditions in different temperature conditions as per International Conference on Harmonization (ICH) guideline Q1A(R2) in order to identify and characte...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2020.113768
更新日期：2021-02-05 00:00:00
abstract：:A dedicated proteomic approach based on nano-Liquid Chromatography coupled with tandem mass spectrometry in ion trap is proposed for the analysis of proteins trapped in sorbent resin cartridges used to remove inflammatory mediators from blood by coupled plasma filtration adsorption (CPFA). The final purpose of the pro...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2016.10.009
更新日期：2017-01-05 00:00:00
abstract：:Antioxidant therapy has been proposed to improve the oxidative stress status of diabetic patients. Natural products are a source of substances such as carotenoids, with known antioxidant properties with possible benefits on diabetes. Among them, Dunaliella salina is a microalga with high content in carotenoids that ca...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2008.12.041
更新日期：2009-04-05 00:00:00
abstract：:A simple, rapid and sensitive isocratic reversed phase HPLC method with UV detection using internal standard has been developed and validated for simultaneous determination of amoxicillin and clavulanic acid in human plasma. The assay enables the measurement of amoxicillin and clavulanic acid for therapeutic drug moni...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2007.06.019
更新日期：2007-11-05 00:00:00
abstract：:A simple and sensitive liquid chromatographic method with electrochemical (EC) detection is described for the quantitative determination of amoxycillin and clavulanic acid in pharmaceutical dosage forms. Sample components were separated by a reversed phase C18 column, using a mixture of methanol-phosphate buffer (pH 3...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(00)00507-0
更新日期：2001-05-01 00:00:00
abstract：:Ziv-aflibercept (ziv-AFL) is a complex fusion protein which is widely used in hospitals for the treatment of colorectal metastatic cancer. Charge variants are critical attributes for assessing post-transitional modifications (PMTs) that have to be controlled during the development and manufacture of these proteins and...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2020.113233
更新日期：2020-06-05 00:00:00
abstract：:The analysis of gentamicin by liquid chromatography using a column packed with poly(styrene-divinylbenzene) and pulsed electrochemical detection on a gold electrode is described. The mobile phase consists of an aqueous solution containing sodium sulfate, tetrahydrofuran, sodium 1-octanesulfonate and a phosphate buffer...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(98)00214-3
更新日期：1998-12-01 00:00:00
abstract：:Statistical modelling and experimental design (SMED) are essential tools for the development and understanding of complicated products and processes. SMED allows efficient experimentation in which all or a large subset of factors are together varied over a set of experiments, in contrast to the traditional approach of...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(91)80185-c
更新日期：1991-01-01 00:00:00
abstract：:An LC/MS/MS assay was developed and successfully used to quantitate vesnarinone and its principal metabolites (OPC-8230, OPC-18136, and OPC-18137) in human plasma and urine. Samples were pre-treated with liquid-solid extraction followed by simultaneous monitoring of primary and daughter ions which were used for the id...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(98)00194-0
更新日期：1999-01-01 00:00:00
abstract：:A method using reverse phase liquid chromatography-tandem mass spectrometry and cassette administration was developed for in vivo brain and plasma exposure profiling to assist early CNS drug discovery programs. Three to four compounds were grouped in cassettes for dosing and analysis. Compounds in the cassettes were s...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/S0731-7085(03)00523-5
更新日期：2004-02-04 00:00:00
abstract：:Analysis of the antitumor agent Paclitaxel, related taxane analogues and yew tree bark extracts has been carried out using an HPLC system capable of performing chromatographic separations with conventional, small-bore, and micro-bore columns. Both diode array detector and mass spectrometry were incorporated into this ...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(96)01969-3
更新日期：1997-07-01 00:00:00
abstract：:The method validation strategy described consists of four components which are the prevalidation, validation proper, study proper and statistical analyses. These components constitute the platform upon which to evaluate the reliability and reproducibility of a bioanalytical method. Consideration has been given to emul...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(91)80159-7
更新日期：1991-01-01 00:00:00
abstract：:Chiral separation of 19 pairs of cis-beta-lactam (BL) stereoisomers of pharmacological importance was examined by capillary electrophoresis using cyclodextrin (CD) derivatives. In order to select the most effective conditions separating the highest number of stereoisomers of BLs, single carboxymethyl alpha-, beta- and...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2010.04.026
更新日期：2010-11-02 00:00:00
abstract：:The effect of 17 monoamine oxidase inhibitory drugs (propargylamine derivatives) on the phase transition parameters of some synthetic phospholipids has been studied by differential scanning calorimetry. The drugs modified the thermal behaviour of phospholipids proving the existence of phospholipid-drug interactions. P...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(93)80006-m
更新日期：1993-07-01 00:00:00
abstract：:An account is given of the development of tests for the bio-assay of insulin and the progress made, at the Wellcome Foundation Limited, during the last 30 years in reducing the number of animals used in the testing of insulin for the treatment of Diabetes Mellitus. The progressive evolution of methods shows how the nu...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章,评审
doi：10.1016/0731-7085(89)80083-4
更新日期：1989-01-01 00:00:00
abstract：:The alkaline hydrolysis of mitomycin C has been studied over a wide range of pH/H_(7-15). A stability-indicating high-performance liquid chromatographic (HPLC) method was used to separate the degradation products from the parent drug. The quantitative effects of temperature and buffers on the degradation of mitomycin ...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(85)80007-8
更新日期：1985-01-01 00:00:00
abstract：:A sensitive and simple high-performance liquid chromatography (HPLC) method was developed and validated for the analysis of amoxicillin in mouse serum and broncho-alveolar lavage (BAL) fluid. One hundred microlitres of sample were needed for the assay. Sample processing was carried out with liquid-liquid extraction. C...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2005.04.021
更新日期：2005-09-15 00:00:00
abstract：:Mixed-mode chromatography (MMC) is a fast growing area in recent years, thanks to the new generation of mixed-mode stationary phases and better understanding of multimode interactions. MMC has superior applications in the separation of compounds that are not retained or not well resolved by typical reversed-phase LC m...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章,评审
doi：10.1016/j.jpba.2016.05.007
更新日期：2016-09-05 00:00:00
abstract：:A new, sensitive, specific and reproducible method for determination of clopidogrel metabolite (SR26334) in human plasma has been developed. After liquid-liquid extraction on Chem Elut cartridges with dichloromethane, samples were quantified using reversed-phase high performance liquid chromatography with mass detecti...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 临床试验,杂志文章
doi：10.1016/j.jpba.2005.11.035
更新日期：2006-05-03 00:00:00
abstract：:A high-performance liquid chromatography tandem mass spectrometry-mass spectrometry (LC-MS-MS) assay was developed for the analyses of morphine, morphine glucuronides and normorphine in plasma samples from rats. The analytes were extracted by using C2 solid-phase extraction cartridges. The extraction recoveries were 1...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(97)00094-0
更新日期：1998-02-01 00:00:00
abstract：:The development and validation of a reversed-phase liquid chromatographic method for the determination of the related substances of 2-[N-[(S)-1-Ethoxycarbonyl-3-phenylpropyl]-L-alanyl]-(1S, 3S, 5S)-2-azabicyclo[3.3.0]octane-3-carboxylic acid (ramipril) in Altace capsules is described. The method utilizes an ion-pairin...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/s0731-7085(00)00342-3
更新日期：2000-09-01 00:00:00
abstract：:The consumption of so called energy drinks is increasing, especially among adolescents. These beverages commonly contain considerable amounts of the amino sulfonic acid taurine, which is related to a magnitude of various physiological effects. The customary method to control the legal limit of taurine in energy drinks...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2013.08.046
更新日期：2014-05-01 00:00:00
abstract：:A pure β-D-Glucopyranosiduronic acid metabolite (≥98.0 % purity and a single impurity ≤0.50 %) was requested for biological studies. Due to its unusual instability, the purification of the glucuronide metabolite was extremely challenging. Initially, the crude sample (89 % HPLC area purity) was purified on a Waters S...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2020.113651
更新日期：2021-01-05 00:00:00
abstract：:A relatively simple, selective, precise and accurate high performance liquid chromatography (HPLC) method based on a reaction of phenylisothiocyanate (PITC) with glucosamine (GL) in alkaline media was developed and validated to determine glucosamine hydrochloride permeating through human skin in vitro. It is usually p...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2005.11.044
更新日期：2006-05-03 00:00:00
abstract：:Radix Dipsaci (RD), the dried root of Dipsacus asper, is commonly used as a traditional Chinese medicine for the treatment of bone diseases and functions in strengthening bone and healing bone fractures. Nevertheless, the high polarity, non chromophores and low abundance of multiple compounds in this plant bring diffi...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2014.05.006
更新日期：2014-09-01 00:00:00
abstract：:Values of the ionization constants at 37 °C, which are scarcely reported, are more meaningful for interpreting mechanisms of cellular transport by ionizable molecules and in mechanistic dissolution studies, which are often performed at the biorelevant temperature. An equation was developed where the pK(a) values of dr...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2011.05.007
更新日期：2011-09-10 00:00:00
abstract：:A quasi-empirical approach to the simulation of fractograms was examined to verify that the elution behavior of emulsions in power-based field programmed sedimentation field-flow fractionation (SdFFF) is consistent and predictable. The approach was applied to Intralipid, a commercial soybean emulsion and to an investi...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/0731-7085(95)01313-a
更新日期：1995-06-01 00:00:00
abstract：:Free thiols, or unpaired cysteines, are important product quality attributes in the therapeutic proteins due to their potential impact on the protein structure, bioactivity and stability. While many free thiol quantitation methods were developed for specific therapeutic formats, an unmet need still exists for a multip...
journal_title：Journal of pharmaceutical and biomedical analysis
pub_type： 杂志文章
doi：10.1016/j.jpba.2020.113434
更新日期：2020-09-10 00:00:00
