6 mm, 5 mu m) column thermostated at 30 degrees C using acetonitrile-0.05 M pH 3.0 potassium dihydrogen orthophosphate buffer (60:40, v/v) as a mobile phase. Wavelength was set at 267 nm. An external standard method using a dilution of the sample solution as reference was used for the purity test. The method was found to be simple, rapid, specific and sensitive with detection limit of 0.67 ng. A thorough study has been undertaken to identify and characterize an unknown impurity at a level over the
identification threshold of 0.1 %, and its structure was elucidated as 7-(3,5,6-trimethyl-1,4-benzoquinone-2-yl)-7-p-tolyl-heptanoic acid based on the data of MS, UV, IR and NMR spectra. Formation of the unknown impurity as well as the countermeasure was also discussed.”
“Objective: To assess the serum levels of gut and adipocyte-derived learn more metabolic hormones
that control appetite, adipocity, weight gain and energy hemostasis, namely total ghrelin (TG), acylated ghrelin (AG), leptin and PYY-3 in hyperemesis gravidarum (HG).
Methods: Plasma samples of 86 women in their first trimester pregnancies with HG (n = 30), morning sickness of pregnancy (MSP) (n = 34) and control (n = 22) groups were obtained. Serum levels of TG, AG, leptin and PYY-3 were compared between the groups, and the correlations with severity of symptoms using modified PUQE (Pregnancy Unique Quantification of Emesis) scoring, BMI, E2, hCG and TSH were calculated.
Results: Levels of TG, AG, PYY-3 and the TG/leptin see more ratio were significantly higher in HG group compared to MSP and the control groups (p <= selleck chemicals 0.017). AG/TG ratio was significantly lower in the HG group compared to both MSP and control groups (p <= 0.017). There were either weak or no significant statistical correlations between the gut and adipose-related hormones and the modified PUQE scores, BMI, E2, hCG and
TSH.
Conclusion: Gut-derived metabolic hormones ghrelin, AG and PYY-3 may be involved in the HG pathophysiology.”
“Solid dispersions (SDs) of poorly water soluble diacerein were prepared with polyvinylpyrrolidone K30 at drug to polymer ratios of 1:1, 1:3 and 1:5 w/w utilizing kneading technique. Physical mixture (PM) was prepared at drug to polymer ratio of 1:5 w/w for comparison. All formulations were further characterized by TLC, DSC, XRPD, SEM and dissolution studies. TLC indicated an absence of chemical interaction between drug and polymer. A prominent decrease in the crystallinity was accounted for diacerein in binary systems from XRPD data. DSC thermograms revealed a uniform molecular dispersion and generation of amorphous entities of drug accompanied by loss of crystalline and irregular shape with distinct changes in surface morphological features of diacerein detected in SEM photomicrographs. The drug dissolution properties of SDs were significantly improved (DP2: 95.