Inappropriate initial urinary catheter placement among older Chinese hospital inpatients: An observational study.

AIM: The aim of this study is to evaluate incidences of inappropriate initial urinary catheter placements within an older inpatient cohort. METHODS: A total of 200 inpatients that received urinary catheterizations within 24 hours of admission were recruited for this observational study. The key demographic and clinical factors were recorded. Adverse outcomes were assessed by examining incidences of catheter-associated urinary tract infection (CAUTI) during hospitalization, after transfer to skilled nursing facilities, second, duration of hospital stay and by scoring changes on the Katz Index of Independence in Activities of Daily Living. Correlative relationships between demographic data and clinical factors with adverse outcomes were analyzed. RESULTS: Inappropriate initial urinary catheterization in our cohort was approximately 39%. This was associated with elevated Charlson comorbidity index scores and increased dependency, with correlations to medical diagnosis. We also observed that the primary rationale for the procedure (inappropriate catheterization) was for neurogenic bladder (where intermittent catheterization was indicated) and in 'convenience-of-care' catheterizations. Inappropriate catheter placement was ultimately associated with an elevated CAUTI at point of discharge, with transfers to skilled nursing facilities and also with an increased duration of hospital stay. CONCLUSIONS: Inappropriate catheter placement was prevalence in southwestern China and associated with adverse outcomes.

Evaluation of Uracil, Sodium Ascorbate, and Rosiglitazone as Promoters of Urinary Bladder Transitional Cell Carcinomas in Male Sprague-Dawley Rats.

The purpose of this study was to establish a 2-stage model of urinary bladder carcinogenesis in male Sprague-Dawley rats to identify tumor promoters. In phase 1 of the study, rats ( n = 170) were administered 100 mg/kg of the tumor initiator, N-butyl-N-(4-hydroxybutyl)-nitrosamine (BBN), twice weekly by oral gavage (po) for a period of 6 weeks. Phase 2 consisted of dividing rats into 4 groups ( n = 40 per group) and administering one of the following for 26 weeks to identify putative tumor promoters: (1) vehicle po, (2) 25 mg/kg/day rosiglitazone po, (3) 5% dietary sodium l-ascorbate, and (4) 3% dietary uracil. Rats were necropsied after 7.5 months, and urinary bladders were evaluated by histopathology. BBN/vehicle treatments induced the development of urothelial hyperplasia (83%) and papillomas (15%) but no transitional cell carcinomas (TCCs). Rosiglitazone increased the incidence and severity of papillomas (93%) and resulted in TCC in 10% of treated rats. Uracil was the most effective tumor promoter in our study and increased the incidence of papillomas (90%) and TCC (74%). Sodium ascorbate decreased the incidence of urothelial hyperplasia (63%) and did not increase the incidence of urothelial papillomas or TCC. These data confirm the capacity of our 2-stage model to identify urinary bladder tumor promoters.

Dual Inhibition of Interleukin-23 and Interleukin-17 Offers Superior Efficacy in Mouse Models of Autoimmunity.

Therapies targeting either interleukin (IL)-23 or IL-17 have shown promise in treating T helper 17 (Th17)-driven autoimmune diseases. Although IL-23 is a critical driver of IL-17, recognition of nonredundant and independent functions of IL-23 and IL-17 has prompted the notion that dual inhibition of both IL-23 and IL-17 could offer even greater efficacy for treating autoimmune diseases relative to targeting either cytokine alone. To test this hypothesis, we generated selective inhibitors of IL-23 and IL-17 and tested the effect of either treatment alone compared with their combination in vitro and in vivo. In vitro, using a novel culture system of murine Th17 cells and NIH/3T3 fibroblasts, we showed that inhibition of both IL-23 and IL-17 completely suppressed IL-23-dependent IL-22 production from Th17 cells and cooperatively blocked IL-17-dependent IL-6 secretion from the NIH/3T3 cells to levels below either inhibitor alone. In vivo, in the imiquimod induced skin inflammation model, and in the myelin oligodendrocyte glycoprotein peptide-induced experimental autoimmune encephalomyelitis model, we demonstrated that dual inhibition of IL-17 and IL-23 was more efficacious in reducing disease than targeting either cytokine alone. Together, these data support the hypothesis that neutralization of both IL-23 and IL-17 may provide enhanced benefit against Th17 mediated autoimmunity and provide a basis for a therapeutic strategy aimed at dual targeting IL-23 and IL-17.

Effect of kinesiotaping on pain relief and upper limb function in stroke survivors: a systematic review and meta-analysis.

OBJECTIVES: To explore the effects of kinesiotaping in the treatment of shoulder pain and upper limb function in stroke survivors. METHODS: PubMed, EMBASE and the Cochrane Central Register of Controlled Trials were electronically and manually searched to identify relevant publications from inception to March 1, 2022. Full-text qualitative studies that explored the effects of kinesiotaping on hemiplegic shoulder pain and poststroke upper limb spasticity were included in the analysis. Data synthesis with a thematic approach was performed to generate descriptive and analytical themes. RESULTS: Nine randomized controlled trials with 253 participants were included. The meta-analysis showed that kinesiotaping significantly reduced poststroke shoulder pain (mean difference (MD) = -1.59, 95% confidence interval (CI): -3.21 to -0.02, P = 0.05), enhanced range of motion (ROM) (MD = 7.00, 95% CI: 2.3 to 11.7, P = 0.004), reduced Modified Ashworth scale (MAS) scores (MD = -0.26, 95% CI: -0.51 to -0.01, P = 0.04), and decreased the magnitude of shoulder subluxation (MD = -0.42, 95% CI: -0.76 to -0.08, P = 0.02). However, outcomes, such as the Fugl-Meyer score and Barthel index, did not differ between the kinesiotaping and control groups. CONCLUSIONS: Kinesiotaping effectively relieved shoulder pain, improved upper limb spasticity and ROM, and reduced shoulder subluxation in stroke survivors. However, the effects of kinesiotaping on upper limb function in terms of FMA-UE scores and independence in activities of daily living were not verified. High-quality RCTs designed with large sample sizes are still required in the future.

Gram-negative multidrug-resistant organisms were dominant in neurorehabilitation ward patients in a general hospital in southwest China.

This study aimed to investigate the prevalence of and risk factors for multidrug-resistant organism (MDRO) infection in the rehabilitation ward of a general hospital in Southwest China. We analyzed rehabilitation patients with nosocomial infections caused by MDROs from June 2016 to June 2020. MDRO infection pathogens and associated antibiotic resistance were calculated. Possible risk factors for MDRO-related infection in the neurorehabilitation ward were analyzed using chi-square, and logistic regression. A total of 112 strains of MDRO were found positive from 96 patients. The MDRO test-positive rate was 16.70% (96/575). Ninety-five MDRO strains were detected in sputum, of which 84.82% (95/112) were gram-negative bacteria. Acinetobacter baumannii (A. Baumannii), Pseudomonas aeruginosa (P. aeruginosa), and Klebsiella pneumonia (K. pneumonia) were the most frequently isolated MDRO strains. The logistic regression model and multifactorial analysis showed that long-term (≥ 7 days) antibiotic use (OR 6.901), history of tracheotomy (OR 4.458), and a low albumin level (< 40 g/L) (OR 2.749) were independent risk factors for the development of MDRO infection in patients in the rehabilitation ward (all P < 0.05). Gram-negative MRDOs were dominant in rehabilitation ward patients. Low albumin, history of a tracheostomy, and long-term use of antibiotics were independent risk factors for MRDO infection and are worthy of attention.

Effectiveness of repetitive transcranial magnetic stimulation against poststroke urinary incontinence: a study protocol for a randomized controlled trial.

BACKGROUND AND PURPOSE: Poststroke urinary incontinence (PSI) is prevalent in stroke survivors, and high-quality evidence is required to guide clinical practice. Previous studies have demonstrated the curative effect of repetitive transcranial magnetic stimulation (rTMS) for urinary incontinence in individuals with multiple sclerosis (MS), Parkinson's disease (PD), and spinal cord injury (SCI). Here, we describe the protocol for a randomized controlled trial to evaluate the efficacy and safety of low-frequency rTMS on the contralesional primary motor cortex (M1) for the treatment of PSI. METHODS AND ANALYSIS: In this single-centre randomized controlled trial for poststroke urinary incontinence, a total of 140 eligible patients will be randomly allocated into two groups. The rTMS group (n = 70) will receive low-frequency rTMS at the M1 along with routine medical care, while the control group will receive sham rTMS along with routine medical care. All participants will undergo 20 treatment sessions, five times a week for 4 weeks. The primary outcome measures will be the changes in the urodynamic test at baseline versus 4 weeks after intervention. The secondary outcomes include the International Consultation on Incontinence Questionnaire Urinary Incontinence Short Form (ICIQ-UI SF), Overactive Bladder Symptom Score (OABSS), and pelvic floor muscle function. ETHICS AND DISSEMINATION: The Institutional Review Board and Hospital Research Ethics Committee of the Second Affiliated Hospital of Chongqing Medical University approved this trial, and the approval number is No. 2020-153. All methods will be carried out in accordance with the principles of the Declaration of Helsinki and relevant ethical guidelines covering informed consent, confidentiality, and data storage. After the study had been thoroughly described to the participants by a physician, all participants will provide written informed consent indicating their willingness to participate. The results will be disseminated to most of the population, including participants, researchers, healthcare providers, and sponsors. TRIAL REGISTRATION: URL: https://www.chictr.org.cn ; Unique identifier: ChiCTR2100042688. Date of Registration: 2021-01-26.

TGFß2 and TGFß3 mediate appropriate context-dependent phenotype of rat valvular interstitial cells.

This study focused on characterizing the potential mechanism of valvular toxicity caused by TGFß receptor inhibitors (TGFßRis) using rat valvular interstitial cells (VICs) to evaluate early biological responses to TGFßR inhibition. Three TGFßRis that achieved similar exposures in the rat were assessed. Two dual TGFßRI/-RII inhibitors caused valvulopathy, whereas a selective TGFßRI inhibitor did not, leading to a hypothesis that TGFß receptor selectivity may influence the potency of valvular toxicity. The dual valvular toxic inhibitors had the most profound effect on altering VIC phenotype including altered morphology, migration, and extracellular matrix production. Reduction of TGFß expression demonstrated that combined TGFß2/ß3 inhibition by small interfering RNA or neutralizing antibodies caused similar alterations as TGFßRis. Inhibition of TGFß3 transcription was only associated with the dual TGFßRis, suggesting that TGFßRII inhibition impacts TGFß3 transcriptional regulation, and that the potency of valvular toxicity may relate to alteration of TGFß2/ß3-mediated processes involved in maintaining proper balance of VIC phenotypes in the heart valve.

Azatricyclic Inverse Agonists of RORγt That Demonstrate Efficacy in Models of Rheumatoid Arthritis and Psoriasis.

Structure-activity relationship studies directed toward the replacement of the fused phenyl ring of the lead hexahydrobenzoindole RORγt inverse agonist series represented by 1 with heterocyclic moieties led to the identification of three novel aza analogs 5-7. The hexahydropyrrolo[3,2-f]quinoline series 5 (X = N, Y = Z=CH) showed potency and metabolic stability comparable to series 1 but with improved in vitro membrane permeability and serum free fraction. This structural modification was applied to the hexahydrocyclopentanaphthalene series 3, culminating in the discovery of 8e as a potent and selective RORγt inverse agonist with an excellent in vitro profile, good pharmacokinetic properties, and biologic-like in vivo efficacy in preclinical models of rheumatoid arthritis and psoriasis.

Safety and efficacy of anti-PD-L1 therapy in the woodchuck model of HBV infection.

Immune clearance of Hepatitis B virus (HBV) is characterized by broad and robust antiviral T cell responses, while virus-specific T cells in chronic hepatitis B (CHB) are rare and exhibit immune exhaustion that includes programmed-death-1 (PD-1) expression on virus-specific T cells. Thus, an immunotherapy able to expand and activate virus-specific T cells may have therapeutic benefit for CHB patients. Like HBV-infected patients, woodchucks infected with woodchuck hepatitis virus (WHV) can have increased hepatic expression of PD-1-ligand-1 (PD-L1), increased PD-1 on CD8+ T cells, and a limited number of virus-specific T cells with substantial individual variation in these parameters. We used woodchucks infected with WHV to assess the safety and efficacy of anti-PD-L1 monoclonal antibody therapy (αPD-L1) in a variety of WHV infection states. Experimentally-infected animals lacked PD-1 or PD-L1 upregulation compared to uninfected controls, and accordingly, αPD-L1 treatment in lab-infected animals had limited antiviral effects. In contrast, animals with naturally acquired WHV infections displayed elevated PD-1 and PD-L1. In these same animals, combination therapy with αPD-L1 and entecavir (ETV) improved control of viremia and antigenemia compared to ETV treatment alone, but with efficacy restricted to a minority of animals. Pre-treatment WHV surface antigen (sAg) level was identified as a statistically significant predictor of treatment response, while PD-1 expression on peripheral CD8+ T cells, T cell production of interferon gamma (IFN-γ) upon in vitro antigen stimulation (WHV ELISPOT), and circulating levels of liver enzymes were not. To further assess the safety of this strategy, αPD-L1 was tested in acute WHV infection to model the risk of liver damage when the extent of hepatic infection and antiviral immune responses were expected to be the greatest. No significant increase in serum markers of hepatic injury was observed over those in infected, untreated control animals. These data support a positive benefit/risk assessment for blockade of the PD-1:PD-L1 pathway in CHB patients and may help to identify patient groups most likely to benefit from treatment. Furthermore, the efficacy of αPD-L1 in only a minority of animals, as observed here, suggests that additional agents may be needed to achieve a more robust and consistent response leading to full sAg loss and durable responses through anti-sAg antibody seroconversion.

A novel function of CXCL10 in mediating monocyte production of proinflammatory cytokines.

IFN-γ-inducible protein 10 (CXCL10), a chemokine that is abundantly secreted in response to inflammatory stimuli, has been implicated in the pathogenesis of multiple inflammatory diseases, such as inflammatory bowel disease. Whereas CXCL10 is traditionally recognized for recruiting pathogenic T cells to inflamed sites, its nonchemotactic role during inflammation remains poorly defined. In this report, we identified a novel function of CXCL10 in the regulation of the inflammatory potential of human monocytes to produce cytokines. We found that CXCL10 was necessary and sufficient for IFN-γ-primed human monocytes to induce a robust production of proinflammatory cytokines, such as IL-12 and IL-23. CXCL10-induced monocyte production of these cytokines depended on CXCR3 receptor engagement as well as on the Iκ B kinase and p38 MAPK signaling pathways. By using an innate-mediated murine colitis model, we demonstrated that anti-CXCL10 Ab treatment robustly suppressed the local production of myeloid-derived inflammatory cytokines and intestinal tissue damage. Together, our data unravel a previously unappreciated role of CXCL10 in the amplification of myeloid cell-mediated inflammatory responses. Targeting CXCL10 is therefore an attractive approach to treating inflammatory diseases that are driven by innate and adaptive immunity.

Acute coronary artery injury in dogs following administration of CI-1034, an endothelin A receptor antagonist.

The objective of this study was to characterize acute coronary artery injury evoked by the endothelin A receptor (ETAR) antagonist, CI-1034. Male dogs (n = 5) were intravenously administered CI-1034 at 120 mg/kg for 4 d. Control animals (n = 3) received vehicle. Macroscopically, drug-related hemorrhage was observed in the right coronary groove and atrium. Histologically, drugrelated coronary changes were characterized as medial hemorrhage and necrosis, with mixed inflammatory-cell infiltrates in the adventitia and media. Immunohistochemistry staining indicated increased expression of inducible nitric oxide synthase (iNOS), cleaved caspase-3, and S100A8/A9 (within in monocytes and neutrophils) proteins in coronary arteries of CI-1034-treated animals. However, there were similar expression levels of endothelial nitric oxide synthase (eNOS) among control and CI-1034-treated animals. Significant drug-related nitric oxide (NO) accumulation occurred on days 1 through 4 in serum. Increased interleukin (IL)-6 and fibrinogen in plasma and serum amyloid A (SAA) occurred on days 2 through 5 in CI-1034-treated animals. Increased levels of NO accumulation in serum; increased IL-6 and fibrinogen levels in plasma; increased SAA levels; and increased expressions of iNOS, cleaved caspase-3, and S100A8/A9 complex appear to be characteristic of CI-1034-induced acute vascular injury in dogs.

Apoptosis and nitrative stress associated with phosphodiesterase inhibitor-induced mesenteric vasculitis in rats.

Nitric oxide may play a role in phosphodiesterase (PDE) inhibitor-induced rat mesenteric vasculitis. The present study was conducted to identify cellular sources of iNOS, determine the distribution of nitrotyrosine (NT) residues as a footprint of peroxynitrite (ONOO-) production, and evaluate their association with vascular apoptosis. To dissociate primary events from secondary changes associated with the inflammatory response, rats were given the PDE IV inhibitor CI-1018 orally at 750 mg/kg alone or concurrently with dexamethasone (DEX) intraperitoneally at 1 mg/kg for 4-5 days. Neutrophil (PMN) involvement in apoptosis was investigated in CI-1018 treated rats dosed with rabbit anti-rat PMN serum (APS). iNOS expression, NT residues, and caspase-3 were detected by immuno-histochemistry. Apoptosis was evaluated by TUNEL assay. CI-1018 induced vascular lesions were associated with iNOS expression in endothelial cells and inflammatory infiltrates; NT was evident only in the latter. Caspase-3 and TUNEL-positive staining were prominent only in medial smooth muscle cells (SMC) from CI-1018-treated rats and only when associated with active inflammation. iNOS- and NT-positive inflammatory cells were present in close proximity to SMC with caspase-3 staining. Inflammatory infiltrates were absent in rats given DEX with minimal SMC necrosis and hemorrhage remained. DEX eliminated apoptosis and immunoreactivity associated with caspase-3, iNOS, and NT. APS depletion of PMNs decreased the incidence and severity of vasculitis but failed to abolish completely caspase-3 immunoreactivity. Expression patterns for caspase-3, iNOS, and NT demonstrated that nitrative stress is a prominent feature of PDE inhibitor-induced vasculitis, with a possible role in medial SMC apoptosis. Further, medial SMC apoptosis may not be a primary event, but instead may be secondary to the inflammatory response.