1.The Ethanolic Extract of Chrysanthemum morifolium Ramat Flower Activates Parasympathomimetic and Anti-inflammatory Effects for Prevention of Presbyopia
Amitesh SHARMA ; Shivani DEVI ; Kartic ; Nattan STALIN ; Jiwon LIM ; Jiwon CHOI ; Jisun KIM ; Mi-Young JEONG ; Sung-Joon LEE ; Tae-Sik PARK
Natural Product Sciences 2024;30(1):20-29
		                        		
		                        			
		                        			 Presbyopia is characterized by a loss of the accommodative ability of the eye that negatively affects vision-aided health-related quality of life. Local inflammation in the eye diminishes parasympathetic cholinergic stimulation  and  contraction  of  the  iris  and  ciliary  muscle  in  the  eyes  via  the  muscarinic  (cholinergic)  receptor.Along  with  the  cholinergic  agent,  a  non-steroidal  anti-inflammatory  agent  is  often  integrated  to  ameliorate presbyopia.  Chrysanthemum morifolium   belongs  to  the  Asteraceae.  We  examined  whether  Chrysanthemum morifolium   flower  extract  (CME)  has  parasympathomimetic  and  anti-inflammatory  activity  in  HLE-B3  human lens epithelial cells and RAW 264.7 macrophages. CME induced time- and dose-dependent production of IP 1  and Ca 2+ accumulation in HLE-B3 cells. In the LPS-induced inflammatory response, CME treatment downregulated inducible  nitric  oxide  synthase  (iNOS)  and  nitric  oxide  in  RAW  264.7  macrophages.  CME  downregulated  the levels  of  interleukin-1β  (IL-1β)  and  interleukin-6  (IL-6)  with  no  change  in  TNF-α  levels.  In  addition,  the phosphorylation  of  JNK  and  p38  was  reduced  with  no  change  in  ERK  by  CME  in  LPS-treated  cells.  These findings  suggest  that  the  parasympathetic  and  anti-inflammatory  efficacy  of  CME  can  be  applied  to  develop therapeutics against presbyopia. 
		                        		
		                        		
		                        		
		                        	
            
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