Baeckea frutescens L. Promotes wound healing by upregulating expression of TGF-ß, IL-1 ß, VEGF and MMP-2.

Baeckea frutescens L. has been traditionally used for treating snakebites and is known to possess antifebrile and hemostatic properties. These properties are closely related to wound healing. This study aimed to evaluate the wound healing properties of B. frutescens leaves extract (BFLE) in vitro and in vivo. The in vitro study focused on proliferation, migration, and expression of TGF-ß, IL-1ß, VEGF, and MMP-2 genes and proteins. The in vivo study included excisional wound healing, histology, and tensile strength studies. The ethanolic extract of B. frutescens (BFLE) was tested for its effects on proliferation and migration using keratinocytes (HaCaT) and fibroblasts (BJ) cells. Gene and protein expression related to wound healing were analyzed using real-time PCR and Western blot assays. The wound healing properties of BFLE were evaluated in vivo using Wistar albino rats, focusing on excisional wound healing, histology, and tensile strength studies. The BFLE displayed significant proliferative and migratory effects on keratinocytes and fibroblasts cells, while upregulating the expression of TGF-ß, IL-1ß, VEGF, and MMP-2 genes and proteins. BFLE also exhibited significant wound healing effects on Wistar albino rats' excisional wounds and improved the overall tensile strength. The results suggest that BFLE has strong wound healing properties, as demonstrated by its ability to increase keratinocytes and fibroblasts proliferation and migration, upregulate genes and proteins involved in the wound healing process, and improve wound healing rates and tensile strength. The findings of this study provide important insights into the potential use of B. frutescens as a natural wound healing agent.

Hydroxychavicol, a polyphenol from / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

This study aims to elucidate the antiproliferative mechanism of hydroxychavicol (HC). Its effects on cell cycle, apoptosis, and the expression of c-Jun N-terminal kinase (JNK) and P38 mitogen-activated protein kinase (MAPK) in HT-29 colon cancer cells were investigated. HC was isolated from

Characterisation of galloylated cyanogenic glucosides and hydrolysable tannins from leaves of Phyllagathis rotundifolia by LC-ESI-MS/MS.

INTRODUCTION: Phyllagathis rotundifolia (Jack) Bl. (Melastomataceae) is a creeping herb found in Peninsular Malaysia and Sumatra. Traditionally, a decoction of the leaves is used in the treatment of malaria, fever and stomach ache. OBJECTIVE: To provide ESI-MS(n) data which are applicable for chemical fingerprinting of P. rotundifolia to obviate laborious isolation and purification steps. METHODOLOGY: The mass spectral data for the compounds isolated from the leaves of P. rotundifolia were obtained by liquid chromatography-electrospray ionisation tandem mass spectrometry. RESULTS: The MS fragmentation patterns were obtained for galloylated cyanogenic glucosides based on prunasin (prunasin 6'­O­gallate 1, prunasin 2',6'­di­O­gallate 2, prunasin 3',6'­di­O­gallate 3, prunasin 4',6'­di­O­gallate 4, prunasin 2',3',6'­tri­Ogallate 5, prunasin 3',4',6'­tri­O­gallate 6 and prunasin 2',3',4',6'­tetra­O­gallate 7), gallotannins (6­O­galloyl­D­glucose 8, 3,6­di­O­galloyl­D­glucose 9, 1,2,3­tri­O­galloyl­ß­D­glucose 10, 1,4,6­tri­O­galloyl­ß­D­glucose 11, 3,4,6­tri­O­galloyl­D­glucose 12, 1,2,3,6­tetra­O­galloyl­ß­D­glucose 13 and 1,2,3,4,6­penta­O­galloyl­ß­D­glucose 14), ellagitannins [6­O­galloyl­2,3­O­(S)­hexahydroxy­diphenoyl­D­glucose 15, praecoxin B 16 and pterocarinin C 17], ellagic acid derivatives (3'­O­methyl­3,4­methylenedioxyellagic acid 4'­O­ß­D­glucopyranoside 18 and 3,3',4­tri­O­methylellagic acid 4'­O­ß­D­glucopyranoside 19) and gallic acid 20 that were isolated from the leaves of P. rotundifolia. CONCLUSION: The ESI-MS(n) technique facilitates identification of galloylated cyanogenic glucosides, hydrolysable tannins and ellagic acid derivatives that were isolated from the leaves of P. rotundifolia. It yields MS(n) spectra that are useful for identification of these compounds in complex samples and permit more complete fingerprinting of plant materials.