With advancing lupus nephritis, spCSF-1 was the predominant isoform responsible for increasing circulating CSF-1 and, along with the csCSF-1 isoform, for increasing intrarenal CSF-1. Thus, csCSF-1 appears to initiate and promote the local activation of macrophages within the kidney. Intrarenal expression of csCSF-1 and spCSF-1 increases
with advancing nephritis, thereby promoting the intrarenal recruitment of monocytes and expansion of Ly6C(hi) macrophages, which induce apoptosis of the renal parenchyma. Taken together, these data suggest that the three CSF-1 isoforms have distinct biologic PFTα datasheet properties, suggesting that blocking both circulating and intrarenal CSF-1 may be necessary for therapeutic efficacy.”
“Budesonide (BUD) is used as a mixture of 22R and 22S epimers for the topical treatment of asthma, rhinitis, and click here inflammatory bowel disease. To study stereoselectivity in the pharmacokinetics of each epimer, we developed a stereoselective and sensitive ultra-high-performance liquid chromatography-tandem mass spectrometry method for the quantitative determination of 22R and 22S epimers of BUD in human plasma. The epimers of BUD were extracted from plasma using n-hexane/dichloromethane/isopropanol (2:1:0.1, v/v/v) under alkaline conditions. Baseline separation was obtained within 7 min on an Acquity UPLC BEH C-18 (50 mm x 2.1 mm, 1.7 pm) column
using an isocratic mobile phase consisting of acetonitrile/5 mM ammonium acetate/acetic acid (29:71:0.142, v/v/v) at a flow rate of 0.7 mL/min. Mass spectrometric detection was performed in a multiple reaction monitoring mode using the m/z 489 -> 357 transition for BUD epimers and the m/z 497 -> 357 transition for the internal standard d(8)-BUD epimers. Calibration curves were linear over the concentration ranges of 5.0-500 and 5.0-3000 pg/mL
for 22R-BUD and 22S-BUD, respectively. The lower limit of quantification was 5.0 pg/mL for both epimers. The method was successfully applied in a pharmacokinetic MEK inhibitor review study of BUD controlled-release capsules in humans. Consistent differences in the pharmacokinetics of the 22R and 22S epimers were observed, the AUC((0-infinity)) of 22S-BUD was approximately six times higher than that of 22R-BUD, and the 22S-/22R-BUD ratio of total body clearance was 0.17. (C) 2013 Elsevier B.V. All rights reserved.”
“PURPOSE. To report the clinical course of 2 pediatric ocular rosacea cases with a significant delay until diagnosis.\n\nMETHODS. We report 2 interventional case reports. Case 1 is a 10-year-old boy with 2 years of recurrent bilateral blepharitis, repetition chalazion, conjunctival hyperemia, and corneal ulcers, without response to topical antibiotics or topical and systemic steroids. Case 2 is a 9-year-old girl with keratoconjunctivitis and repetition chalazion since she was 2 years old, without improvement after consulting several ophthalmologists and performing several treatments throughout those years.\n\nRESULTS.