Conectar
by Kaylee R. Jacobs, Caleb M. Ardizzone, Arkaprabha Banerjee, Evelyn Toh, Xiaoli Zhang, David E. Nelson
Chlamydia are obligate intracellular bacterial pathogens that infect a wide range of vertebrate hosts. Despite having highly conserved genomes, closely related Chlamydia species can exhibit distinct host and tissue tropisms. The host tropisms of the human pathogen Chlamydia trachomatis and the closely related mouse pathogen Chlamydia muridarum are influenced by their ability to evade host immune responses, particularly those mediated by interferon gamma. However, there is evidence that tissue tropism is driven by additional poorly understood host and Chlamydia factors. In this study, we used a forward genetic approach to investigate the mechanisms that mediate C. muridarum tissue tropism. We conducted a tropism screen using a randomly mutagenized C. muridarum library and murine cell lines representing different tissues. We identified a mutant isolate whose growth was restricted in murine rectal and oviduct epithelial cells in an interferon gamma-independent manner. This phenotype was mapped to a missense mutation in tc0237, a gene that mediates the affinity of C. muridarum for cultured human epithelial cells. Our analysis of growth dynamics showed that the tc0237 mutant exhibits a developmental delay in rectal epithelial cells. Together, these results suggest that TC0237 plays a role in C. muridarum tissue tropism.Diabetic foot wounds (DFW) are notoriously difficult to treat owing to poor vascularity, delayed healing and higher rates of infection. Human-derived acellular dermal matrices (ADM) have been used in DFW treatment, utilizing a matrix scaffold for new tissue generation. We investigate the efficacy of a micronized injectable human-derived ADM in the treatment of DFW. We retrospectively recruited 13 patients with diabetic foot wounds. Wounds were adequately debrided, and a micronized injectable ADM was applied. Wound sizes were recorded prior to treatment, at 2 and 4 weeks post-treatment. The mean defect of wounds treated was 19.21 cm3. Our results showed a statistically significant reduction in wound size of 45% and 59% at 2 and 4 weeks post-treatment, respectively (p < 0.01). ADM was also effective in infected DFW as 84% of our wounds had positive tissue cultures at the time of application. Micronized injectable ADM has proven to be an effective treatment for DFW. Advantages include a ready-to-use injectable, single-stage treatment, minimal pain, mouldable matrix to fit any wound shape, allows for outpatient treatment and simple wound dressings.
This study aimed to evaluate assistant nurses' knowledge of and attitudes towards pressure injuries in a clinical setting. It employed a cross-sectional design, using two validated surveys: PUKAT 2.0 and APUP, alongside open-ended questions. A convenience sample of 88 assistant nurses from five wards across two departments at a 600-bed university hospital in Sweden participated. Participants answered the questionnaire and open-ended questions, followed by a learning seminar led by the study leader covering PUKAT 2.0 knowledge questions. The seminar ended with an evaluation of this training approach. Results revealed a significant knowledge gap in pressure injury prevention among assistant nurses, with a mean PUKAT 2.0 knowledge score of 33.8 and a standard deviation of ±11.7 (a score of 60 is deemed satisfactory). Only 3.4% (n = 3) of participants achieved a satisfactory knowledge score. However, attitudes towards pressure injury prevention, assessed by the APUP tool, were generally positive among the majority of the participants. Open-ended questions and evaluations of the seminar showed assistant nurses' desire for pressure injury prevention training and their appreciation for the seminar format. Further studies need to evaluate recurrent training procedures and departmental strategies aimed at reducing the knowledge gap among healthcare staff.
Complex fractures present significant challenges in orthopaedic surgery, particularly in terms of postoperative wound healing. Nutritional status plays a crucial role in the recovery process, with early nutritional support potentially influencing wound healing outcomes. This meta-analysis aimed to assess the impact of early nutritional interventions on postoperative wound healing and scar formation in patients with complex fractures. From an initial pool of 1742 articles, 7 studies were selected for analysis. The results revealed that preoperative nutritional support significantly improved early wound healing, as indicated by lower REEDA scores (SMD = −14.06, 95% CI: [−16.79, −11.32], p < 0.01) 1 week post-surgery. Furthermore, there was a notable reduction in scar formation, as demonstrated by lower Manchester Scar Scale scores (SMD = −25.03, 95% CI: [−30.32, −19.74], p < 0.01) 3 months post-surgery. These findings highlight the importance of incorporating nutritional strategies into the management of complex fractures to optimize postoperative recovery.
To investigate the preventive effect of different dressings on pressure injuries related to non-invasive ventilation equipment and to screen the efficacy of dressings. Systematic review and network meta-analysis. PubMed, the Cochrane Library, Web of Science, EMBASE, Cumulative Index to Nursing & Allied Health Literature (CINAHL), China Knowledge Resource Integrated Database (CNKI), Wanfang Database, Chinese Biomedical Database (CBM) and Weipu Database (VIP) were used for the search from the date of inception of each database to 15 October 2023. The quality of the data was assessed using the Cochrane Risk of Bias tool. Stata 16.0 Software was used to analysis and ranking of different types of dressings. A total of 23 randomized controlled trials on 7 interventions were included in the final analysis. The effectiveness of these in preventing the overall incidence of pressure injuries is ranked from best to worst as follows: hydrogel dressing > foam dressing > petroleum jelly gauze dressing > hydrocolloid dressing > film dressing > clean gauze dressing > sterile gauze. Sixteen studies reported the incidence of Stage I pressure injuries, the effectiveness in preventing the incidence of Stage I pressure injuries was ranked from best to least effective: foam dressing > hydrogel dressing > petroleum jelly gauze dressing > hydrocolloid dressing > film dressing > clean gauze dressing > sterile gauze dressing. Fourteen studies reported the incidence of Stages I/II pressure injuries, the effective in preventing the incidence of Stages I and II pressure injuries was ranked from best to least effective: foam dressing > hydrogel dressing > petroleum jelly gauze dressing > hydrocolloid dressing > clean gauze dressing > sterile gauze dressing. Considering the advantages and disadvantages of different dressings, both hydrogel and foam dressings are effective in preventing pressure injuries related to non-invasive ventilation equipment.
A randomized, controlled clinical trial was conducted from 2022 to 2023 at a hospital specializing in Traditional Chinese Medicine in Shanghai. A total of 564 participants were allocated into control and intervention groups in order to determine the effectiveness of Shujing Tongdu massage on patients with chronic lesions or spinal disorders. No significant differences were observed in baseline characteristics between the groups; age, gender and condition type were all distributed in a comparable manner. Following the implementation of Shujing Tongdu massage therapy twice weekly for the duration of 12 weeks, intervention group exhibited noteworthy enhancements. Significantly, rate of lesion healing achieved in the intervention group increased by 30%, while it merely improved by 10% in the control group. The intervention group exhibited decrease in pain intensity from 6.5 to 4.2, whereas control group demonstrated comparatively smaller reduction from 6.7 to 6.0. Range of motion in the intervention group increased substantially from 45 to 60 degrees, whereas it increased from 44 to 46 degrees in the control group. In the intervention group, Quality of Life scores increased from 50 to 75, exceeding the increase of 58 in the control group. There was significant rise in the Mental Well-being Index for intervention group, from 60 to 80, in contrast to rise of 64 from 62 in the control group. Statistically significant outcomes were determined, establishing the massage therapy's efficacy. Mild discomfort and muscle soreness were the most frequent adverse effects in the intervention group, whereas vertigo was more prevalent in the control group. Based on the findings of this research, Shujing Tongdu massage therapy effectively promoted wound healing and mitigated symptoms associated with spinal disorders, indicating its potential as the supplementary therapeutic modality in clinical environments.
The aims of this study were to (i) compare the prevalence of multidimensional frailty in middle-aged and older people with stroke and to (ii) explore the relationship between multidimensional frailty and quality of life (QoL) in this patient population.
In recent years, stroke patients have become increasingly younger. As an important risk factor for stroke patients, frailty has gradually drawn research attention because of its multidimensional nature.
This study used a cross-sectional design.
The study included 234 stroke patients aged 45 and older. Multidimensional frailty was defined as a holistic condition in which a person experiences losses in one or more domains of human functioning (physical, psychological and social) based on the Tilburg Frailty Indicator, and QoL was based on the short version of the Stroke-Specific Quality of Life Scale. Hierarchical regression was used to analyse the correlation factors of QoL. STROBE checklist guides the reporting of the manuscript.
A total of 128 (54.7%) participants had multidimensional frailty, 48 (44.5%) were middle aged and 80 (63.5%) were older adults. The overall QoL mean score of the participants was 47.86 ± 9.04. Multidimensional frailty was negatively correlated with QoL. Hierarchical regression analysis showed that multidimensional frailty could independently explain 14.6% of the variation in QoL in stroke patients.
Multidimensional frailty was prevalent in middle-aged and older people with stroke, and it was a significant factor associated with QoL in stroke patients.
This study emphasises the importance of the early identification of multidimensional frailty. And targeted interventions should be studied to prevent the occurrence of multidimensional frailty and thereby improve the QoL of patients.
There are no patient or public contributions to this study.
This meta-analysis evaluated the role of evidence-based nursing interventions in preventing pressure ulcers in patients with stroke. Computer systems were used to retrieve randomised controlled trials (RCTs) on evidence-based nursing interventions for patients with stroke and comorbid pressure ulcers from PubMed, EMBASE, Scopus, Cochrane Library, China National Knowledge Infrastructure, Chinese Biomedical Literature Database and Wanfang Data from database inception until April 2023. Two researchers independently screened the literature, extracted the data and evaluated the quality of the included studies according to the inclusion and exclusion criteria. RevMan 5.4 software was used for the meta-analysis. A total of 23 articles with results on 2035 patients were included, with 1015 patients in the evidence-based nursing group and 1020 patients in the routine nursing group. The meta-analysis results showed that evidence-based nursing interventions significantly reduced the incidence of pressure ulcers in patients with stroke (5.22% vs. 22.84%, odds ratio [OR]: 0.18, 95% confidence interval [CI]: 0.13–0.24, p < 0.001), delayed the onset of pressure ulcers (standardised mean difference [SMD]: 3.41, 95% CI: 1.40–5.42, p < 0.001) and improved patient quality of life (SMD: 2.95, 95% CI: 2.35–3.56, p < 0.001). Evidence-based nursing interventions are effective at preventing pressure ulcers in patients with stroke, delaying the onset of pressure ulcers and improving their quality of life. Evidence-based nursing should be promoted for patients with stroke. However, owing to differences in sample size between studies and the methodological inadequacies of some studies, these results should be verified by large, high-quality RCTs.
In a meta-analysis, we assessed the impact of different surgical approaches on the outcome of hepatectomy with hepatocellular carcinoma. Four databases, including PubMed, Embase, Cochrane Library, and the Web of Science, have been critically reviewed through the full literature through June 2023. Eleven related trials were examined once they had met the trial's classification and exclusion criteria, as well as the assessment of the quality. A random effects approach was applied to analysis of operative organ infections, and a fixed-effect model was applied to determine the 95% CI and OR. Analysis of the data was done with RevMan 5.3. Our findings indicated that patients undergoing minimally invasive liver cancer surgery had significantly lower risks of surgical organ infection (OR, 0.35; 95% CI, 0.16–0.77; p = 0.009) and wound infection (OR, 0.19; 95% CI, 0.13–0.28; p < 0.001) compared to those undergoing open surgery. There was no heterogeneity observed between the two groups (I 2 = 0) in wound infection. Nevertheless, because of the limited number of randomised controlled trials in this meta-analysis, care should be taken and carefully considered in the treatment of these values. Further high-quality studies involving a large number of samples are needed to validate and reinforce the results.
FreshRSS 