Abstract
Objective: In vitro diffusion experiments were performed to assess the permeation of magnesium sulfate across pig skin.
Methods: The mean thickness of the dermatomed porcine skin was 648 ± 12 µm. Magnesium concentration was measured using inductively coupled plasma-optical emission spectroscopy. Transdermal flux of magnesium sulfate across MN-treated and untreated porcine skin was obtained from the slope of the steady-state linear portion of cumulative amount versus time curve.
Results: Statistical analysis of the results was done with Student’s t-test. The transdermal flux of magnesium sulfate across microneedle-treated porcine skin was 134.19 ± 2.4 µg/cm2/h and transdermal flux across untreated porcine skin was 4.64 ± 0.05 µg/cm2/h. Confocal microscopy was used to visualize the microchannels created by a solid microneedle roller (500 µm).
Conclusion: From our confocal microscopy studies, it was evident that the 500 μm long microneedles disrupted the stratum corneum and created microchannels measuring 191 ± 37 µm. The increase in transdermal flux across the microneedle-treated skin was statistically significant compared to that of controls, i.e., without the application of microneedles. With the application of microneedles, the transdermal flux of magnesium permeated over 12 h was approximately 33-fold higher in comparison to passive diffusion across an intact stratum corneum.
Keywords: Magnesium sulfate, inductively coupled plasma-optical emission spectroscopy, transdermal flux, microneedle roller, confocal microscopy, microchannels.
Graphical Abstract
[http://dx.doi.org/10.2169/internalmedicine1962.29.368] [PMID: 2273620]
[http://dx.doi.org/10.1152/physrev.00012.2014] [PMID: 25540137]
[http://dx.doi.org/10.1080/07315724.2005.10719461] [PMID: 15930481]
[http://dx.doi.org/10.5049/EBP.2008.6.2.86] [PMID: 24459527]
[http://dx.doi.org/10.2165/00003088-200038040-00002] [PMID: 10803454]
[http://dx.doi.org/10.1161/STROKEAHA.108.527788] [PMID: 19211496]
[http://dx.doi.org/10.1016/0002-9378(90)90002-O] [PMID: 2288560]
[http://dx.doi.org/10.3797/scipharm.1108-20] [PMID: 22396901]
[http://dx.doi.org/10.1016/S1773-2247(14)50041-X]
[http://dx.doi.org/10.1038/nbt.1504] [PMID: 18997767]
[http://dx.doi.org/10.1016/j.ijpharm.2015.11.023] [PMID: 26611668]
[http://dx.doi.org/10.1684/mrh.2016.0402] [PMID: 27624531]
[http://dx.doi.org/10.3109/10717544.2014.935532] [PMID: 25006687]
[http://dx.doi.org/10.5958/0974-360X.2015.00019.0]
[http://dx.doi.org/10.1208/s12249-019-1309-z] [PMID: 30694397]
[http://dx.doi.org/10.1002/jps.21863] [PMID: 19582754]
[http://dx.doi.org/10.1016/j.addr.2012.04.005] [PMID: 22575858]
[http://dx.doi.org/10.2174/13894501113146660232] [PMID: 24144208]
[http://dx.doi.org/10.3390/pharmaceutics7030090] [PMID: 26131647]
[http://dx.doi.org/10.1166/jbn.2017.2474] [PMID: 29490749]
[http://dx.doi.org/10.1016/j.ijpharm.2011.11.046] [PMID: 22172290]
[http://dx.doi.org/10.1109/TBME.2005.845240] [PMID: 15887540]
[http://dx.doi.org/10.1007/978-3-540-92165-3_18] [PMID: 19768415]
[http://dx.doi.org/10.1089/hum.2018.073] [PMID: 29968486]
[http://dx.doi.org/10.1001/jamadermatol.2013.6955] [PMID: 24258303]
[http://dx.doi.org/10.1093/bja/83.2.302] [PMID: 10618948]
[http://dx.doi.org/10.1016/j.abb.2011.05.010] [PMID: 21640700]
[http://dx.doi.org/10.1021/acs.biochem.6b01243] [PMID: 28124894]
[http://dx.doi.org/10.1007/s12011-018-1351-9] [PMID: 29679349]
[http://dx.doi.org/10.4103/0970-9185.117105] [PMID: 24106365]
[http://dx.doi.org/10.15171/jarcm.2016.021]
[http://dx.doi.org/10.1016/j.vaccine.2014.01.076] [PMID: 24530146]
[http://dx.doi.org/10.1016/S2095-4964(15)60195-9] [PMID: 26343101]
[http://dx.doi.org/10.1007/s11095-008-9578-3] [PMID: 18449628]
[http://dx.doi.org/10.1016/j.xphs.2018.02.011] [PMID: 29462631]
[PMID: 15080493]
[http://dx.doi.org/10.1248/cpb.54.481] [PMID: 16595949]
[http://dx.doi.org/10.1016/j.mser.2016.03.001]
[http://dx.doi.org/10.1016/j.aanat.2006.09.004] [PMID: 17419547]
[http://dx.doi.org/10.1016/j.molimm.2014.10.023] [PMID: 25466611]
[http://dx.doi.org/10.1002/jps.20398] [PMID: 16052561]
[http://dx.doi.org/10.1111/1471-0528.13753] [PMID: 26599617]
[http://dx.doi.org/10.1097/ALN.0b013e318210483d] [PMID: 21364460]
[http://dx.doi.org/10.1371/journal.pone.0111547] [PMID: 25360806]
[http://dx.doi.org/10.1016/j.ejpb.2016.03.009] [PMID: 26969262]
[http://dx.doi.org/10.1016/j.ejpb.2016.03.026] [PMID: 27018330]
[http://dx.doi.org/10.2147/CCID.S142450] [PMID: 28848356]
[http://dx.doi.org/10.1080/17425247.2016.1218460] [PMID: 27485251]
[PMID: 23157712]