The prognostic value of absolute lymphocyte count and neutrophil-to-lymphocyte ratio for patients with metastatic breast cancer: a systematic review and meta-analysis.

Background: Neutrophil-to-lymphocyte ratio (NLR) is considered a potential prognostic marker in early breast cancer. However, the prognosis of absolute lymphocyte count (ALC) and NLR in metastatic breast cancer (MBC) has been reported in a few studies, and conclusions are still conflicting. This present manuscript aims to provide further solid evidence regarding the prognostic values of ALC and NLR in MBC patients.

Bioequivalence Study of Miglitol Orally Disintegrating Tablets in Healthy Chinese Volunteers Under Fasting Condition Based on Pharmacodynamic and Pharmacokinetic Parameters.

To investigate the bioequivalence of miglitol orally disintegrating tablets in healthy Chinese volunteers based on pharmacodynamic (PD) and pharmacokinetic (PK) parameters. Additionally, the safety profile was estimated. Two randomized, open-label, single-dose, crossover trials were conducted under fasting conditions.

Bioequivalence of Celecoxib Capsules in Chinese Healthy Volunteers.

Celecoxib is a sulfanilamide nonsteroidal anti-inflammatory drug that can selectively inhibit cyclooxygenase-2 to inhibit prostaglandin production, achieving anti-inflammatory and analgesic effects. This study investigated the pharmacokinetics, safety, and bioequivalence of a single oral dose of celecoxib capsule (the test or reference preparation) in healthy volunteers under fasting and fed conditions. A single-center, randomized, open, single-dose, double-cycle crossover self-control design was conducted: 40 healthy volunteers were enrolled in the fasting and fed groups, respectively.

Developing a robust LC-MS/MS method to quantify Zn-DTPA, a zinc chelate in human plasma and urine.

Quantitation of Zn-DTPA (zinc diethylenetriamene pentaacetate, a metal chelate) in complex biological matrix is extremely challenging on account of its special physiochemical properties. This study aimed to develop a robust and specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for determination of Zn-DTPA in human plasma and urine. The purified samples were separated on Proteonavi (250 × 4.

Potent Activities of Roemerine against Candida albicans and the Underlying Mechanisms.

Roemerine (RM) is an aporphine alkaloid isolated from the fresh rattan stem of Fibraurea recisa, and it has been demonstrated to have certain antifungal activity. This study aimed to investigate the antifungal activity of RM and the underlying mechanisms in Candida albicans (C. albicans).

Association of CYP2C19 polymorphisms with survival of breast cancer patients using tamoxifen: results of a meta- analysis.

Background: Previous studies accessing the association of CYP2C19 with outcomes of patients using tamoxifen for breast cancer have yielded conflicting results. The aim of this meta-analysis is to obtain a more precise estimate of effects of CYP2C19 polymorphisms and to clarify their effects on survival of the breast cancer patients using tamoxifen.

Materials And Methods: A systematic search of PubMed and Embase was performed, comparing patients with or without CYP2C19*2 and CYP2C19*17, relevant articles searched for.

Development and validation of an LC-ESI-MS/MS method for the quantitation of hemslecin A in rhesus monkey plasma and its application in pharmacokinetics.

In this study, a new LC-ESI-MS/MS-based method was validated for the quantitation of hemslecin A in rhesus monkey plasma using otophylloside A as internal standard (IS). Hemslecin A and the IS were extracted from rhesus monkey plasma using liquid-liquid extraction as the sample clean-up procedure, and were subjected to chromatography on a Phenomenex Luna CN column (150 × 2.0 mm, 3.

Comparative pharmacokinetics of swertiamarin in rats after oral administration of swertiamarin alone, Qing Ye Dan tablets and co-administration of swertiamarin and oleanolic acid.

Ethnopharmacological Relevance: Qing Ye Dan is a well-known herbal drug that is widely used to treat viral hepatitis in the Yi and Hani minority regions in the Yunnan province of China.

Materials And Methods: An LC-MS/MS method was developed to determine the levels of swertiamarin in rat plasma. Swertiamarin and naringin (internal standard, IS) were extracted from rat plasma using solid-phase extraction (SPE) to purify the samples.

Scutellarin inhibits cytochrome P450 isoenzyme 1A2 (CYP1A2) in rats.

Scutellarin is the most important flavone glycoside in the herbal drug Erigeron breviscapus (Vant.) Hand.-Mazz.

Development and validation of a LC-ESI-MS/MS method for the determination of swertiamarin in rat plasma and its application in pharmacokinetics.

A new LC-ESI-MS/MS assay method has been developed and validated for the quantification of swertiamarin, a representative bioactive substance of Swertia plants, in rat plasma using gentiopicroside, an analog of swertiamarin on chemical structure and chromatographic action, as the internal standard (IS). The swertiamarin and IS were extracted from rat plasma using solid-phase extraction (SPE) as the sample clean-up procedure, and they were chromatographed on a narrow internal diameter column (Agilent ZORBAX ECLIPSE XDB-C(18) 100 mm × 2.1 mm, 1.

Identification of the metabolites of ecabet bismuth in rat bile by liquid chromatography-electrospray ionization-tandem mass spectrometry.

In the present study, a liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI- MS/MS) method was developed for the screening and the structural elucidation of the metabolites of ecabet bismuth in rat bile. Solid-phase extraction cartridges were used for sample pre-treatment and a gradient liquid chromatographic system composed of 10 mM ammonium acetate buffer and methanol was used for chromatographic separation on a Phenomenex Kromasil C(18) column. The triple quadrupole mass spectrometer was employed to thoroughly detect and acquire the detailed MS/MS spectra of ecabet and its metabolites.

Determination of bencycloquidium bromide in human urine using weak cation-exchange solid-phase extraction and LC-ESI-MS: Method validation and application to kinetic study of urinary excretion.

A sensitive LC-ESI-MS method has been developed and validated for the determination of bencycloquidium bromide (BCQB) in human urine samples. The method utilized a solid-phase extraction (SPE) procedure, choosing carboxy propyl phase (CBA) as the extracting sorbent for purification of BCQB, with better baseline and higher selectivity achieved. Sample preparation by this method yielded very good and consistent mean recovery of above 94.

Bioequivalence of two formulations of daidzein administered in a single dose to healthy Chinese volunteers.

In this two-treatment, two-period, randomized, crossover bioequivalence study of daidzein, which belongs to the isoflavone class of flavonoids and is classified as a phytoestrogen, two formulations (dripping pills, a rapidly-dissolvable formulation, and tablets) were compared in 20 healthy Chinese male subjects. The drug was given in a single dose of 50 mg and blood samples were withdrawn during 24 h after drug administration. Daidzein was separated and analyzed using a validated liquid chromatography - tandem mass spectrometry (LC-MS/MS) method.

Determination of berberine in human plasma by liquid chromatography-electrospray ionization-mass spectrometry.

A liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) method for the determination of berberine in human plasma using chlorobenzylidine as the internal standard (IS) has been developed and validated. The plasma samples were prepared by LLE and the analytes were chromatographically separated on a Hanbon Lichrospher 5-C18 HPLC column under gradient elution with a mobile phase consisted of acetonitrile and 10mm ammonium acetate buffer containing 0.1% formic acid.

LC-ESI-MS method for the determination of bisoprolol in human plasma.

A sensitive liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) method has been developed and validated for the determination of bisoprolol in human plasma, using metoprolol as internal standard (I.S.).