Wound Healing Effects of Dracontomelon dao on Bacterial Infection Wounds in Rats and Its Potential Mechanisms under Simulated Space Environment

Analysis of the distribution characteristics of infecting microorganisms in the wound tissue of patients with perianal abscess combined with infection and the influencing factors of wound healing

OBJECTIVE

This study aimed to analyze the distribution characteristics of infecting microorganisms in the wound tissue of patients with perianal abscess and infection, as well as to identify factors affecting wound healing.

METHODS

Two hundred patients with perianal abscess combined with infection admitted to our hospital from January 2023 to May 2024 were selected, all of whom underwent one-time radical surgery, and were divided into 155 cases with good quality of healing and 45 cases with poor quality of healing according to the healing status of wounds in the 2 weeks after surgery, and the traumatized tissue specimenss were collected for the cultivation and identification of infecting microorganisms to analyze the characteristics of the distribution of infecting microorganisms. The clinical data of the patients were collected, and the factors affecting wound healing were investigated using unifactorial and multifactorial analysis.

RESULTS

In this study, 316 strains of infecting microorganisms were detected in two hundred patients, including 213 Gram-negative bacteria, 80 Gram-positive, and 23 fungal strains, of which the Gram-negative bacteria were dominated by Escherichia coli (E. coli)and Klebsiella pneumoniae(K. pneumoniae), and the Gram-positive bacteria were dominated by Staphylococcus aureus. The results of univariate analysis showed that body mass index, diabetes mellitus, concomitant infections, and stool traits were influential factors affecting the poor quality of wound healing (P < 0.05). The results of multifactorial logistic regression analysis showed that body mass index, diabetes mellitus, concurrent infections and stool traits were independent risk factors influencing the poor quality of wound healing (P < 0.05, P<0.05 indicates that the factor is statistically significant).

CONCLUSION

This study suggests that BMI, diabetes, concurrent infection and stool characteristics are independent risk factors for poor wound healing in patients with perianal abscess and infection. In clinical practice, it is recommended to implement personalized interventions targeting the above factors (such as optimizing nutritional support, strict blood glucose control, strengthening infection management, etc.) to improve patient prognosis. In the future, the universality of this conclusion needs to be further verified through multi center and large sample studies.

Exploring the mechanism of Huanglian ointment in alleviating wound healing after anal fistula surgery through metabolomics and proteomics

Anal fistula is a common anal and intestinal disease. The wound of anal fistula surgery is open and polluting, which is the most difficult to heal among all surgical incisions. To investigate the mechanism of Huanglian ointment (HLO) on wound healing after anal fistula incision. The S. aureus infected wound in SD rats were used to imitate poor healing wound after anal fistula surgery. SD rats with wound sites (n = 24) were randomly divided into four groups (Control group, Model group, Potassium permanganate (PP) treatment group, and HLO treatment group). The wound healing rate was evaluated, HE staining was used to evaluate the pathological changes of each group, ELISA was used to detect the secretion of inflammatory factors in each group, and the mechanism was explored through metabolomics and proteomics in plasma rat. Compared to other groups, the rate of wound healing in the HLO group was higher on days 7 and 14. Histological analysis showed that collagen and fibroblast in HLO rats were significantly increased, inflammatory cells were reduced, and vascular endothelial permeability was increased. ELISA results showed that the secretion of inflammatory factors in HLO rats was significantly lower. Significant proteins and metabolites were identified in the wound tissues of the infected rats and HLO-treated rats, which were mainly attributed to Cdc42, Ctnnb1, Actr2, Actr3, Arpc1b, Itgam, Itgb2, Cttn, Linoleic acid metabolism, d-Glutamine and d-glutamate metabolism, Phenylalanine, tyrosine and tryptophan biosynthesis, Phenylalanine metabolism, alpha-Linolenic acid metabolism, and Ascorbate and aldarate metabolism. In conclusion, this study showed that HLO can promote S. aureus infected wound healing, and the data provide a theoretical basis for the treatment of wounds after anal fistula surgery with HLO.

Anti-diabetic and anti-inflammatory bioactive hits from Coriaria intermedia Matsum. stem and Dracontomelon dao (Blanco) Merr. & Rolfe bark through bioassay-guided fractionation and liquid chromatography-tandem mass spectrometry

Women have been found to be at a higher risk of morbidity and mortality from type 2 diabetes mellitus (T2DM) and asthma. α-Glucosidase inhibitors have been used to treat T2DM, and arachidonic acid 15-lipoxygenase (ALOX15) inhibitors have been suggested to be used as treatments for asthma and T2DM. Compounds that inhibit both enzymes may be studied as potential treatments for people with both T2DM and asthma. This study aimed to determine potential anti-diabetic and anti-inflammatory bioactive hits from Coriaria intermedia Matsum. stem and Dracontomelon dao (Blanco) Merr. & Rolfe bark. A bioassay-guided fractionation framework was used to generate bioactive fractions from C. intermedia stem and D. dao bark. Subsequently, dereplication through ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) and database searching was performed to putatively identify the components of one bioactive fraction from each plant. Seven compounds were putatively identified from the C. intermedia stem active fraction, and six of these compounds were putatively identified from this plant for the first time. Nine compounds were putatively identified from the D. dao bark active fraction, and seven of these compounds were putatively identified from this plant for the first time. One putative compound from the C. intermedia stem active fraction (corilagin) has been previously reported to have inhibitory activity against both α-glucosidase and 15-lipoxygenase-1. It is suggested that further studies on the potential of corilagin as an anti-diabetic and anti-inflammatory treatment should be pursued based on its several beneficial pharmacological activities and its low reported toxicity.