Tag: pubmed

Parasit Vectors. 2024 Nov 20;17(1):480. doi: 10.1186/s13071-024-06561-6.

ABSTRACT

BACKGROUND: One bioassay for detecting acaricide resistance in livestock ticks is the adult immersion test (AIT), wherein engorged ticks are briefly immersed into a solution of a particular acaricidal compound and examined for mortality, their egg-laying capacity and offspring hatchability in vitro. Usually, the recommended label dose or an established discriminating dose of an acaricide is used to determine high mortality (≥ 95%) of susceptible tick strains. Such a test intends to detect the presence of resistance in a tick population. However, the adult immersion test does not directly translate the bioassay results to the predicted efficacy in the field. In this paper, we used the AIT as an initial screening bioassay supplemented with the resistance intensity test (RIT), a novel larval-based bioassay, wherein the resistance level can be determined and translated to the expected field efficacy. This was done by adopting World Health Organisation (WHO) guidelines for resistance detection in mosquitoes, which combines a 1 × recommended dose with 5 × and 10 × concentrated doses to reveal low, moderate and high resistance intensity, respectively.

METHODS: Engorged Rhipicephalus microplus ticks were collected from cattle at six different ranches across Rio Grande do Sul, Brazil, as part of the state’s acaricide resistance surveillance program. Groups of adult ticks from each field collection were subjected to the AIT from each field sample. Additionally, engorged female ticks from each ranch were allowed to lay eggs, and their larval progeny aged 14 to 28 days were then used in the RIT. Deltamethrin and a combination of cypermethrin, chlorpyrifos and piperonyl butoxide were used in both tests, and the results were statistically analysed.

RESULTS: The in vitro efficacy of deltamethrin against adult ticks in the AIT ranged between 8.74% and 25.38%. The corresponding RIT results on their larval progeny indicated a high resistance level. In the immersion test, the in vitro efficacy of the combination of cypermethrin, chlorpyrifos, and piperonyl butoxide against adult ticks ranged between 49.31% and 100%. The corresponding RIT results on their larval progeny indicated a similar response ranging from fully susceptible to low or moderate resistance. The Pearson correlation coefficient (r = 0.883) showed a high correlation between tick mortality at the 1 × recommended concentrations of acaricides in both tests.

CONCLUSIONS: The resistance intensity test is a valuable addition to the range of bioassays currently available for detecting acaricide resistance by determining the level of acaricide resistance. This is relevant to whether or not to continue using a particular acaricidal class for controlling cattle ticks.

PMID:39568084 | DOI:10.1186/s13071-024-06561-6

Nutr Metab (Lond). 2024 Nov 20;21(1):96. doi: 10.1186/s12986-024-00864-2.

ABSTRACT

BACKGROUND: Numerous studies indicate that visceral adipose tissue (VAT) significantly contribute to metabolic syndrome (MetS) development. This study aims to assess the distinguishing value of novel obesity markers, specifically lipid accumulation products (LAP) and cardiometabolic index (CMI), in relation to MetS. Considering the gender disparity in MetS prevalence, it is essential to explore whether LAP and CMI exhibit differential distinguishing capabilities by gender.

METHOD: The investigation included a total of 11,687 qualified individuals who participated in the NHANES survey spanning a 14-year period from 2005 to 2018. Biochemical analysis of blood and body measurements were utilized to determine LAP and CMI values for each participant. Inclusion of gender as a variable was a key factor in the examination of all data. Restricted cube plots (RCS) were utilized to analyze the strength of the relationship between LAP, CMI, and MetS. The study delved into potential connections between LAP and CMI with MetS, all-cause and cardiovascular mortality using various statistical models such as multivariate logistic regression and Cox regression.

RESULTS: The findings revealed a significant nonlinear association between CMI, LAP, and MetS (P-non-linear < 0.001), irrespective of gender, with all models exhibiting a J-shaped trend. The multivariable logistic regression analysis considered both LAP and CMI as continuous variables or tertiles, revealing significant associations with MetS in male, female, and general populations (All the P < 0.001). Although males displayed a higher risk of MetS, no gender differences were observed in the area under the curve (AUC) values of LAP and CMI for distinguishing (P > 0.005) MetS. Impressively, LAP and CMI were identified as the primary predictors of MetS in both genders from AUC (P < 0.005). More specifically, the cutoff points for distinguishing MetS in females were LAP = 49.87 or CMI = 0.56, while for males, they were LAP = 52.76 or CMI = 0.70. Additionally, the Cox regression analysis revealed that LAP and CMI were correlated with all-cause mortality in both general population and females (P < 0.005), but not in males.

CONCLUSION: In comparison to other measures of obesity, LAP and CMI demonstrated superior diagnostic accuracy for MetS in both males and females. Additionally, LAP and CMI were found to be predictive of all-cause mortality in both general population and females. These markers are cost-effective, easily accessible, and widely applicable for the early identification and screening of MetS in clinical settings.

PMID:39568067 | DOI:10.1186/s12986-024-00864-2

J Orthop Surg Res. 2024 Nov 20;19(1):776. doi: 10.1186/s13018-024-05278-7.

ABSTRACT

OBJECTIVE: This study aims to assess the significance of monitoring temperature change trends at various wound sites in the healing process of diabetic foot ulcers after microcirculation reconstruction surgery.

METHODS: A retrospective analysis was conducted on individuals with diabetic foot ulcers who had been admitted to the Department of Orthopedics at the Second Hospital of Shanxi Medical University between July 2020 and February 2022. Temperature changes were regularly monitored at the center of the wound and the distal tibia of the ipsilateral lower leg to assess microcirculatory blood perfusion. Wound, ischemia, and foot infection (WIFi) grading was performed at admission and the final follow-up was to determine the value of temperature monitoring at various sites. Additionally, the formation of collateral microarterial vessels was monitored to determine their consistency with the observed trends in temperature differences. Follow-up assessments included the recurrence of ulcers, development of ulcers at different locations, re-amputation of the toe or limb, and diabetes-related mortality.

RESULTS: A total of 29 patients were included in the follow-up, with an average age of 57.14 ± 14.75 years and a follow-up period of 9.79 ± 4.13 months. Following microcirculation reconstruction surgery, as the microvascular network formed, the temperature difference between the center of the wound and the distal tibia on the same side gradually decreased, with no statistical difference observed at 4 weeks postoperatively. At both admission and the final follow-up, there was a significant reduction in the wound (W) and ischemia (I) grades within the WIFi classification. The temperature at the wound center showed progressive improvement as collateral microarterial vessels developed. During the follow-up period, there were 2 cases of ulcer recurrence, 1 case of an ulcer appearing at a different location, no cases of re-amputation of the toe or limb, and 2 diabetes-related fatalities.

CONCLUSION: Skin temperature monitoring offers a direct and reliable indication of microcirculatory blood perfusion. Its simplicity and cost-effectiveness make it a valuable tool for widespread use in evaluating wound healing following microcirculation reconstruction surgery.

PMID:39568046 | DOI:10.1186/s13018-024-05278-7

BMC Psychol. 2024 Nov 20;12(1):679. doi: 10.1186/s40359-024-02187-6.

ABSTRACT

Despite the pervasive influence of humor in society, comprehensive quantitative studies exploring its dimensions and societal reception are scarce. This study advances the field by analyzing stand-up comedy specials, linking linguistic elements to humor theories and audience ratings, using the Linguistic Inquiry and Word Count (LIWC-22). The analysis explored the presence and association of Affect, Social, and Cognitive dimensions with ratings of standup comedy shows. Statistical analyses entailed using linear mixed models, incorporating comedians as random effects. Female comedians consistently received lower ratings than males, reflecting historical gender biases, while recent shows received lower ratings than older ones, suggesting the challenge of surpassing pioneering works. Negative emotion positively influenced ratings, while negative mood words had a detrimental effect, highlighting the delicate balance in comedic narratives. Social markers significantly predicted ratings, with moralization negatively impacting them, while the use of social referents, particularly female pronouns, improved ratings. These findings offer valuable insights into the linguistic dynamics of stand-up comedy, informing future research and practice in the comedy industry.

PMID:39568045 | DOI:10.1186/s40359-024-02187-6

J Gastroenterol Hepatol. 2024 Nov 20. doi: 10.1111/jgh.16830. Online ahead of print.

ABSTRACT

BACKGROUND: Bowel colonization with antimicrobial-resistant bacteria has been associated with worse clinical outcomes in patients with cirrhosis; however, it has not been studied in patients with acute-on-chronic liver failure (ACLF). We evaluated whether fecal isolation of carbapenem-resistant gram-negative bacteria (CR-GNB) among patients with ACLF affects short-term outcomes.

METHODS: Patients of APASL-ACLF (n = 339) were screened between June 2020 and December 2021, and 150 were included. Stool cultures were carried out at baseline and every 5 days thereafter until discharge or death. All surviving patients were followed until 60 days after discharge.

RESULTS: Mean age was 44.8 (8.8) years, with 86% males and alcohol as etiology in 66%. CR-GNB organisms were isolated from stool in 42% of hospitalized ACLF patients, with E. coli and Klebsiella pneumoniae as the most common species. Patients with CR-GNB fecal carriage were associated with higher CTP, MELD, and DF scores but not with recent antibiotics, proton pump inhibitors, or lactulose use. Extraintestinal infections developed in 59.3% overall, most commonly UTI, pneumonia, and SBP. Infectious complications developed in 57.3% and 19.7% with and without CR-GNB in the stool (RR: 5.5; p < 0.001). Peripheral cultures were positive in 60.7% with infections, with species concordant with the fecal isolates found in 90.7%. Isolation of CR-GNB from stool and high bilirubin were independently associated with both in-hospital mortality and 60-day mortality (p = 0.05).

CONCLUSIONS: Hospitalized ACLF patients with CR-GNB in the stool have a significantly higher risk of extraintestinal infections, in-hospital mortality, and short-term mortality up to 60 days.

TRIAL NUMBER: [NCT04383106].

PMID:39568042 | DOI:10.1111/jgh.16830

Arch Public Health. 2024 Nov 20;82(1):218. doi: 10.1186/s13690-024-01442-x.

ABSTRACT

BACKGROUND: High-need, high-cost (HNHC) patients are a major focus of international healthcare reform. However, research on HNHC children in China remains limited. This study aims to classify HNHC pediatric patients, analyze the differences among groups, and explore the factors influencing HNHC status.

METHODS: Data were obtained from a retrospective observational cohort of hospitalized children in Shanghai, China from 2017 to 2023. K-means clustering, one of the unsupervised learning algorithms, was employed to classify patients according to their HNHC status. Descriptive statistical analysis and the Kruskal-Wallis H test were used to describe and test the differences among different groups, with the logit regression models to analyze the predictors.

RESULTS: 688,131 hospitalized children were classified into three groups: 1,871 persistent HNHC, 32,539 episodic HNHC, and 653,721 non-HNHC. Significant differences were observed among these groups. Persistent HNHC patients have significantly higher costs and longer HNHC durations compared to episodic and non-HNHC patients, who were more likely to be aged 30 days to 1 year or 13-18 years, female with only one type of health insurance, and leukemia was the most prevalent and costly disease. They exhibited distinct healthcare utilization patterns, including emergency admissions, higher surgery rates, longer hospital stays, more frequent hospitalizations, and a preference for tertiary and specialized hospitals in city centers. Multiple influencing factors of persistent HNHC versus episodic HNHC and non-HNHC were identified.

CONCLUSION: This study provides valuable insights into the classification, characteristics, and influencing factors of persistent, episodic, and non-HNHC hospitalized children in China. Persistent HNHC patients warrant targeted interventions to improve health outcomes and reduce healthcare costs. Enhanced medical coverage for key diseases, high-quality healthcare services tailored to their needs, and early interventions are crucial.

PMID:39568040 | DOI:10.1186/s13690-024-01442-x

Thromb J. 2024 Nov 20;22(1):104. doi: 10.1186/s12959-024-00673-w.

ABSTRACT

This critique evaluates a retrospective observational study on the impact of extracorporeal membrane oxygenation (ECMO) treatments on acquired von Willebrand syndrome (AVWS) in patients with out-of-hospital cardiac arrest (OHCA). The study is praised for its detailed observational methodology, robust statistical analyses, and comprehensive overview of patient outcomes. These strengths enhance the applicability of the results to real-world clinical practice. However, the study’s retrospective design poses inherent risks of bias and confounding factors, which the authors acknowledge but do not extensively address. The absence of a control group of OHCA patients who did not receive ECMO is a significant limitation, as it weakens the ability to isolate the impact of ECMO on AVWS development. Additionally, a more in-depth exploration of the mechanisms by which ECMO contributes to AVWS is needed. Despite these limitations, the study contributes valuable insights into ECMO-related complications and underscores the necessity for vigilant management strategies to mitigate AVWS risks in this high-risk population. The critique concludes by calling for future prospective studies and the development of preventative protocols to improve patient outcomes in ECMO-treated OHCA patients.

PMID:39568032 | DOI:10.1186/s12959-024-00673-w

Knee Surg Relat Res. 2024 Nov 20;36(1):35. doi: 10.1186/s43019-024-00244-3.

ABSTRACT

BACKGROUND: The ascending or descending extended biplanar tibial cut in open wedge high tibial osteotomy (owHTO) not only changes the lower limb anatomy in the coronal plane but also leads to different three-dimensional (3D) changes in the patellofemoral joint. This study aimed to perform a comprehensive analysis of the dynamic biomechanical changes in the knee joint using a multibody simulation model.

METHODS: Thirteen 3D computer models derived from lower limb computer tomography scans were used for owHTO. Osteotomies with ascending or descending biplanar cut were simulated for each wedge height from 6 to 12 mm (in 1-mm intervals). Multibody simulation was used to analyze differences in patellar shift, patellar tilt, mediolateral patellar rotation, and tibiofemoral rotation during a squat simulation from 5° to 100° knee flexion.

RESULTS: The main effects of an ascending compared with a descending extended biplanar cut in owHTO were characterized by an increase in lateralization of the patella and rotation, along with reduced tilt. Linear mixed models revealed statistically significant effects of both wedge height and cut variant on knee kinematics at 100° knee flexion, with the influence of the cut variant (ascending/descending) being higher on all analyzed kinematic parameters.

CONCLUSIONS: Significant differences in the changes in patellofemoral shift, tilt, rotation, and tibiofemoral rotation were observed when performing owHTO with an ascending versus a descending biplanar cut. Apart from tibiofemoral rotation, the resulting kinematic changes were greater with an ascending cut.

PMID:39568030 | DOI:10.1186/s43019-024-00244-3

Scand J Trauma Resusc Emerg Med. 2024 Nov 20;32(1):117. doi: 10.1186/s13049-024-01292-0.

ABSTRACT

BACKGROUND: Procedural sedation and analgesia is an important part of pediatric emergency care, safe and clinically useful alternatives for adequate management are necessary. The objective of this clinical trial was to evaluate the non-inferiority of intranasal dexmedetomidine to nitrous oxide with respect to analgesia for a painful procedure in children 3-15 years of age.

METHODS: This prospective, equally randomized, open-label, non-inferiority trial was conducted at a Pediatric Emergency Department. Previously healthy children 3-15 years of age, with an extremity fracture or luxation or a burn and requiring procedural sedation and analgesia were eligible. Patients were randomized to receive either intranasal dexmedetomidine or inhaled nitrous oxide. The primary outcome measure was highest pain level during the procedure, assessed with Face, Legs, Activity, Cry, Consolability scale (FLACC). Mann-Whitney U test (continuous variables) and Fisher’s test (categorical variables) were used for statistical analysis.

RESULTS: The highest FLACC was median 4 (IQR 3-6) with intranasal dexmedetomidine and median 4 (IQR 2-6) with nitrous oxide. The median of the difference between samples from each group for FLACC was 0 with 95%CI (0-1), thus intranasal dexmedetomidine was not inferior to nitrous oxide with respect to the level of pain during the procedure. The same method for procedural sedation and analgesia would be accepted by 52/74 (82.5%) children and 65/74 (91.5%) parents in the intranasal dexmedetomidine group respectively 59/74 (88.1%) versus 70/74 (94.6%) with nitrous oxide. No serious adverse events were reported.

CONCLUSIONS: The results of this trial support that intranasal dexmedetomidine is not inferior to 50% nitrous oxide in providing analgesia for a painful procedure in children 3-15 years of age and can be considered as an alternative to 50% nitrous oxide for procedural sedation and analgesia.

TRIAL REGISTRATION: EudraCT 201,600,377,317, April 20, 2017. https://eudract.ema.europa.eu/ .

PMID:39568028 | DOI:10.1186/s13049-024-01292-0

J Transl Med. 2024 Nov 20;22(1):1048. doi: 10.1186/s12967-024-05846-9.

ABSTRACT

BACKGROUND: While high-grade serous ovarian cancer (HGSC) has proven largely resistant to immunotherapy, sporadic incidents of partial and complete response have been observed in clinical trials and case reports. These observations suggest that a molecular basis for effective immunity may exist within a subpopulation of HGSC. Herein, we developed an algorithm, CONSTRU (Computing Prognostic Marker Dependencies by Successive Testing of Gene-Stratified Subgroups), to facilitate the discovery and characterization of molecular backgrounds of HGSC that confer resistance or susceptibility to protective anti-tumor immunity.

METHODS: We used CONSTRU to identify genes from tumor expression profiles that influence the prognostic power of an established immune cytolytic activity signature (CYTscore). From the identified genes, we developed a stratification signature (STRATsig) that partitioned patient populations into tertiles that varied markedly by CYTscore prognostic power. The tertile groups were then analyzed for distinguishing biological, clinical and immunological properties using integrative bioinformatics approaches.

RESULTS: Patient survival and molecular measures of immune suppression, evasion and dysfunction varied significantly across STRATsig tertiles in validation cohorts. Tumors comprising STRATsig tertile 1 (S-T1) showed no immune-survival benefit and displayed a hyper-immune suppressed state marked by activation of TGF-β, Wnt/β-catenin and adenosine-mediated immunosuppressive pathways, with concurrent T cell dysfunction, reduced potential for antigen presentation, and enrichment of cancer-associated fibroblasts. By contrast, S-T3 tumors exhibited diminished immunosuppressive signaling, heightened antigen presentation machinery, lowered T cell dysfunction, and a significant CYTscore-survival benefit that correlated with mutational burden in a manner consistent with anti-tumor immunoediting. These tumors also showed elevated activity of DNA damage/repair, cell cycle/proliferation and oxidative phosphorylation, and displayed greater proportions of Th1 CD4 + T cells. In these patients, but not those of S-T1 or S-T2, validated predictors of immunotherapy response were prognostic of longer patient survival. Further analyses showed that STRATsig tertile properties were not explained by known HGSC molecular or clinical subtypes or singular immune mechanisms.

CONCLUSIONS: STRATsig is a composite of parallel immunoregulatory pathways that mirrors tumor immunogenic potential. Approximately one-third of HGSC cases classify as S-T3 and display a hypo-immunosuppressed and antigenic molecular composition that favors immunologic tumor control. These patients may show heightened responsiveness to current immunotherapies.

PMID:39568014 | DOI:10.1186/s12967-024-05846-9