The healing process of diabetic ulcers correlates with changes in the cutaneous microbiota

Background: Diabetic ulcer is a micro vascular complication which can be experienced by all Diabetes Mellitus (DM)’s patients. This condition need an appropriate wound care management to prevent infection, reduce necrotic tissue, and enhance the wound healing process. This study aims to determine the effect of using Javanese tree bark scraping on the healing process of diabetic ulcers, namely changes in the size of diabetic ulcers. Methods: This type of research is a Quasy Experiment with a Pre-test Post-test approach with control group. The populations in this study were all diabetic ulcer patients who came for wound care at Puuwatuhealth care, namely 16 respondents. Result: The results of statistical tests show that that there is no difference in wound size before and after the intervention in the intervention group and the control group. In the Mann Whitney statistical test found that the p-value in the intervention group was 0.189, which is greater than the value of ? = 0.05. Conclusion: The dredging of the bark of the Java tree is not effective against changes in wound size in patients with diabetic ulcers.

Ageratum conyzoides L. leaf has the main compound of flavonoids and alkaloids that contribute to accelerate the healing process of diabetic ulcers with Staphylococcus aureus infection that can affect the quality of life of patients. This study aims to test the leaves of Ageratum conyzoides L. on the recovery of diabetic ulcers of mice infected with Staphylococcus aureus. The method used is the extraction of Ageratum conyzoides L leaves as the material of spray 15%, induction of diabetic compound (Alloxan monohydrate), length wound (1cm) and bacterial infections, and spray application with 1 times daily frequency, 2 times daily, 3 times a day for 9 days. The results showed that the lenght of wounds in group A, B, C, D, and E were 0,5; 0,8; 0,4; 0,2; 0,0. The administration of Ageratum conyzoides L. spray which has active flavonoide substances, alkaloid substance, and saponin substances has an effect on decreased length of diabetic wounds and restoration of dermis tissue structure (increases epithelial cells proliferation, initiates fibroblast cells, and stimulates type 1 collagen). Spray treatment 3 times a day (group E) was more influential than the other treatments, which experienced wound closure in 9 days. Thus, Ageratum conyzoides L. leaf spray is potential for therapy of diabetic ulcers infected with Staphylococcus aureus.

Foot ulcers in diabetic patients should receive treatment to reduce the risk of infection and amputation and improve function and quality of life. Wound care techniques are developing very quickly, which can help nurses and patients to improve the healing of foot ulcers in diabetic patients. Several wound care methods that can accelerate the healing process of foot ulcers in DM patients include modern wound dressings, the process of healing diabetic ulcers. With modern dressing methods, chronic wound care with modern dressings, the potential of green tea in wound healing, honey as a debridement agent. Objective: This study reviews several dressing methods that accelerate the healing process of foot ulcers in diabetic patients. This study uses a Systematic Review based on Preferred Reporting Items for Systematic Reviews & Meta-Analyses (PRISMA) to identify all published literature using relevant databases and keywords. In the 5 articles that we analyzed, the use of modern wound dressings proved to be more effective in accelerating wound healing, especially foot ulcers in diabetic patients. Modern wound care (Modern wound dressing), chronic wound care with modern dressings, the potential of green tea in wound healing, Honey as a debridement agent: a systematic review. And the role of the family in helping patients take medication regularly is the right choice to accelerate the healing process of foot ulcers in diabetic patients with more cost-effective treatment.

Perinatal morphine exposure induces long-term changes in the intestinal microbiota of male and female rats.

Probiotic yogurt and milk supplemented with probiotics have been investigated for their role in 'low-grade' inflammation but evidence for their efficacy is inconclusive. This study explores the impact of probiotic yogurt on metabolic and inflammatory biomarkers, with a parallel study of gut microbiota dynamics. The randomised cross-over study was conducted in fourteen healthy, young men to test probiotic yogurt compared with milk acidified with 2 % d-(+)-glucono-δ-lactone during a 2-week intervention (400 g/d). Fasting assessments, a high-fat meal test (HFM) and microbiota analyses were used to assess the intervention effects. Baseline assessments for the HFM were carried out after a run-in during which normal milk was provided. No significant differences in the inflammatory response to the HFM were observed after probiotic yogurt compared with acidified milk intake; however, both products were associated with significant reductions in the inflammatory response to the HFM compared with the baseline tests (assessed by IL6, TNFα and chemokine ligand 5) (P<0·001). These observations were accompanied by significant changes in microbiota taxa, including decreased abundance of Bilophila wadsworthia after acidified milk (log 2-fold-change (FC)=-1·5, P adj=0·05) and probiotic yogurt intake (FC=-1·3, P adj=0·03), increased abundance of Bifidobacterium species after acidified milk intake (FC=1·4, P adj=0·04) and detection of Lactobacillus delbrueckii spp. bulgaricus (FC=7·0, P adj<0·01) and Streptococcus salivarius spp. thermophilus (FC=6·0, P adj<0·01) after probiotic yogurt intake. Probiotic yogurt and acidified milk similarly reduce postprandial inflammation that is associated with a HFM while inducing distinct changes in the gut microbiota of healthy men. These observations could be relevant for dietary treatments that target 'low-grade' inflammation.

Sprayable hydrogel dressing accelerates wound healing with combined reactive oxygen species-scavenging and antibacterial abilities

Cystic fibrosis (CF) is frequently associated with gastrointestinal problems, including intestinal microbiota dysbiosis. Cystic fibrosis transmembrane conductance regulator (CFTR) modulator therapies, such as elexacaftor-tezacaftor-ivacaftor (ELX/TEZ/IVA), have demonstrated improvements in lung function, abdominal symptoms, and quality of life in patients with CF. However, the impact of these modulators on the intestinal microbiota in the pediatric population remains incompletely understood. The objective of this study was to characterize the changes in the intestinal microbiota of pediatric patients with CF after 6 months of treatment with ELX/TEZ/IVA. Thirty-one patients with CF, aged 6-18 years, were recruited. Stool samples were collected before the initiation of treatment and approximately 6 months thereafter. Microbiota analysis was performed using 16S rRNA gene amplicon sequencing. Statistical analyses were employed to evaluate changes in alpha and beta diversity and variations in the relative abundance of different bacterial taxa. Clinical variables such as concomitant use of azithromycin and probiotics were considered. After 6 months of treatment, no significant changes in the alpha diversity were observed. However, alterations in bacterial composition were detected. A decrease in the abundance of potentially pathogenic bacteria, such as Enterobacteriaceae members (Escherichia/Shigella) was observed. The abundance of genus Blautia increased. Differential analysis according to antibiotic and probiotic consumption revealed specific changes in microbiota composition. ELX/TEZ/IVA therapy for 6 months induces changes in the intestinal microbiota composition of pediatric patients with CF, characterized by a reduction in potentially harmful bacteria and an increase in potentially beneficial bacteria. These findings suggest a modulation towards a healthier intestinal microbiota profile.

The Intestinal Metabolome: An Intersection Between Microbiota and Host

Nonhealing wounds are major socioeconomic challenges to healthcare systems worldwide. Therefore, there is a substantially unmet need to develop new drugs for wound healing. Gynura procumbens, a herb found in Southeast Asia, may be an effective therapeutic for nonhealing diabetic wounds. The aim of this study was to evaluate the efficacy of G. procumbens on wound healing in the diabetic milieu. G. procumbens extract was obtained using 95% ethanol and its components were determined by thin layer chromatography. Diabetes was induced in mice using streptozotocin. We found that G. procumbens extract contained stigmasterol, kaempferol and quercetin compounds. Topical application of G. procumbens on the wounded skin of diabetic mice accelerated wound healing and induced the expression of angiogenin, epidermal growth factor, fibroblast growth factor, transforming growth factor and vascular endothelial growth factor. Furthermore, G. procumbens promoted in vitro wound healing and enhanced the migration and/or proliferation of human endothelial cells, fibroblasts, keratinocytes and mast cells cultured in diabetic conditions. Finally, G. procumbens promoted vascular formation in the diabetic mice. To the best of our knowledge, this is the first study that evaluates in vivo wound healing activities of G. procumbens and activation of cells involved in wound healing process in diabetic conditions. The findings that G. procumbens accelerates wound healing and activates cells involved in the wound healing process suggest that G. procumbens might be an effective alternative therapeutic option for nonhealing diabetic wounds.

The mammalian gastrointestinal tract, the site of digestion and nutrient absorption, harbors trillions of beneficial commensal microbes from all three domains of life. Commensal bacteria, in particular, are key participants in the digestion of food, and are responsible for the extraction and synthesis of nutrients and other metabolites that are essential for the maintenance of mammalian health. Many of these nutrients and metabolites derived from commensal bacteria have been implicated in the development, homeostasis and function of the immune system, suggesting that commensal bacteria may influence host immunity via nutrient- and metabolite-dependent mechanisms. Here we review the current knowledge of how commensal bacteria regulate the production and bioavailability of immunomodulatory, diet-dependent nutrients and metabolites and discuss how these commensal bacteria-derived products may regulate the development and function of the mammalian immune system.

ABSTRACTHuman microbiome investigations now provide evidence that changes in the microbiome over time and their interaction with the immune, endocrine, and nervous systems are associated with a wide array of disorders. Human immunological studies typically absent a microbiome consideration in their investigations. An area of recent exploration is the role of the microbiome as a critical partner in the development and function of the human immune system in aging. It is well known that immunologic maturation is influenced by a lifetime of interactions of the host with its companion microbiome. It is generally not well recognized that intestinal microbes play an essential role in the development and expansion of gut mucosal and systemic immune function. Gut microbial communities of elderly people have different composition and behavior compared to healthy younger adults. Comorbidities associated with microbial pathogens and an aberrant immune system tend to increase with aging. This review underscores the impact of the human–microbiome interface on the development and function of the immune system and on immunosenescence. These changes have important implications regarding health and health system utilization in the elderly population.

Lack of lymphocytes impairs macrophage polarization and angiogenesis in diabetic wound healing

Diabetes and its associated vascular complications e.g, cardiovascular disease and chronic wounds is a leading healthcare concern. Protein tyrosine phosphatase1B (PTP1B) is a key regulator of whole-body glucose and energy...

Two hydrogenated xanthohumol (XN) derivatives, α,β-dihydro-XN (DXN) and tetrahydro-XN (TXN), improved parameters of metabolic syndrome (MetS), a critical risk factor of cardiovascular disease (CVD) and type 2 diabetes, in a diet-induced obese murine model. It is hypothesized that improvements in obesity and MetS are linked to changes in composition of the gut microbiota, bile acid metabolism, intestinal barrier function, and inflammation. To test this hypothesis, 16S rRNA genes were sequenced and bile acids were measured in fecal samples from C57BL/6J mice fed a high-fat diet (HFD) or HFD containing XN, DXN or TXN. Expression of genes associated with epithelial barrier function, inflammation, and bile acid metabolism were measured in the colon, white adipose tissue (WAT), and liver, respectively. Administration of XN derivatives decreases intestinal microbiota diversity and abundance-specifically Bacteroidetes and Tenericutes-alters bile acid metabolism, and reduces inflammation. In WAT, TXN supplementation decreases pro-inflammatory gene expression by suppressing macrophage infiltration. Transkingdom network analysis connects changes in the microbiota to improvements in MetS in the host. Changes in the gut microbiota and bile acid metabolism may explain, in part, the improvements in obesity and MetS associated with administration of XN and its derivatives.

To prospectively examine the changes in microbiota within the urinary tract after transrectal prostate biopsy. Data, urine, and fecal samples prospectively collected from 30 patients before and after transrectal biopsy of the prostate. DNA was extracted from urine collected after a prostate massage before and after prostate biopsy, and from fecal samples collected before the biopsy. We sequenced DNA using the bacterial 16S rRNA high-throughput next-generation sequencing and analyzed changes in microbial profiles for taxonomy comparison between samples. Pre-biopsy urinary microbial profiles contained Lactobacillus and Staphylococcus bacteria. Post-biopsy urinary microbial profiles included lower levels of Lactobacillus and higher levels of Prevotella bacteria. Bacteroides bacteria were predominant in fecal samples. We identified two clustering patterns containing both pre- and post-biopsy urine samples. Cluster 1 had a urine cluster pattern that was distinct from fecal, whereas cluster 2 was similar to fecal. We observed two different modes of microbial changes, 11 patients had both of their urine (pre and post) samples associated with a particular cluster group, whereas others (n = 15) had movement between clusters 1 and 2 following the biopsy procedure. Four patient's post-biopsy urine microbial profiles clustered very tightly to the fecal microbial profile. We describe two models of change in the urinary tract microbiota after prostate biopsy using 16S RNA gene analysis. Further research to determine what controls changes in the urinary microbiota after prostate biopsy can help us understand why some patients are more susceptible to develop post-biopsy infections.