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This study evaluated the association of transthyretin (TTR) gene variant, in which isoleucine substitutes for valine at position 122 (V142I), with cardiac structure, function, and heart failure (HF) risk among middle-aged Black adults.
The valine-to-isoleucine substitution in the TTR protein is prevalent in Black individuals and causes cardiac amyloidosis.
Jackson Heart Study participants without HF at baseline who had available data on the TTR V142I variant were included. The association of the TTR V142I variant with baseline echocardiographic parameters and repeated measures of high-sensitivity cardiac troponin-I (hs-cTnI) was assessed using adjusted linear regression models and linear mixed models, respectively. https://www.selleckchem.com/products/bromopyruvic-acid.html Adjusted Cox models, restricted mean survival time analysis, and Anderson-Gill models were constructed to determine the association of TTR V142I variant with the risk of incident HF, survival free of HF, and total HF hospitalizations.
A total of 119 of 2,960 participants (4%) were heterozygns.
This study assessed changes in B-type natriuretic peptide (BNP) among patients with heart failure with reduced ejection fraction (HFrEF) treated with sacubitril/valsartan (Sac/Val) according to standard prescribing information.
Through inhibition of neprilysin, Sac/Val may increase BNP concentrations.
In an individual patient analysis from the EVALUATE-HF (Study of Effects of Sacubitril/Valsartan vs. Enalapril on Aortic Stiffness in Patients With Mild to Moderate HF With Reduced Ejection Fraction) (n=221) and the PROVE-HF (Effects of Sacubitril/Valsartan Therapy on Biomarkers, Myocardial Remodeling and Outcomes) (n=146) studies, we examined changes in BNP, N-terminal pro-BNP (NT-proBNP), and urinary cyclic guanosine monophosphate (ucGMP) from baseline to week 4 and week12.
Median (IQRs) concentration of BNP at baseline, week 4, and week 12 were 145 [IQR 55-329], 136 [IQR 50-338], and 135 [IQR 51-299] ng/L, respectively. There was no significant change from baseline to week 4 (0% [-30% to+41%]; P = 0.3LUATE-HF]; NCT02874794) (Effects of Sacubitril/Valsartan Therapy on Biomarkers, Myocardial Remodeling and Outcomes [PROVE-HF]; NCT02887183).
In this pooled analysis of patients with HFrEF with standard indications for Sac/Val treatment, there was no significant overall increase in BNP concentrations, and patients demonstrated increase in ucGMP regardless of the trajectory of BNP change. (Study of Effects of Sacubitril/Valsartan vs. Enalapril on Aortic Stiffness in Patients With Mild to Moderate HF With Reduced Ejection Fraction [EVALUATE-HF]; NCT02874794) (Effects of Sacubitril/Valsartan Therapy on Biomarkers, Myocardial Remodeling and Outcomes [PROVE-HF]; NCT02887183).
The authors sought to examine the effect of dapagliflozin across the spectrum of risk in patients enrolled in DAPA-HF.
In the DAPA-HF (Dapagliflozin And Prevention of Adverse-outcomes in HeartFailure) trial, the sodium-glucose cotransporter 2 inhibitor dapagliflozin decreased the risk of worsening HF events and cardiovascular death in patients with HF and reduced ejection fraction.
The MAGGIC (Meta-analysis Global Group in Chronic HeartFailure) and the PARADIGM-HF (Prospective comparison of ARNI with ACEI to Determine Impact on Global Mortality and morbidity in HeartFailure) PREDICT-HF (Risk of Events and Death in the Contemporary Treatment of HeartFailure) risk models were used to categorize patients according to risk score quintiles. The authors analyzed rates of the primary composite outcome of a worsening HF event or cardiovascular death, its components, and all-cause mortality according to risk quintile and whether risk modified the effect of dapagliflozin.
The MAGGIC score was available for 4,740 of 4,744 patients in DAPA-HF (median score 22 [IQR 18-25]). A1-point increase was associated with an 8.2% (95%CI 6.9%-9.4%) higher relative risk of the primary endpoint (P<0.001). The benefit of dapagliflozin over placebo for the primary endpoint was similar across the spectrum of MAGGIC risk score (interaction P = 0.71). Applying the overall relative risk reduction (26%) with dapagliflozin added to standard therapy resulted in 7 fewer patients in the highest MAGGIC risk quintile experiencing a primary outcome, compared with 2 in the lowest quintile, per 100 person-years of treatment. The findings with PREDICT-HF were similar, although this model led to better risk discrimination.
The benefits of dapagliflozin were consistent across the broad spectrum of baseline risk in DAPA-HF.
The benefits of dapagliflozin were consistent across the broad spectrum of baseline risk in DAPA-HF.Functional neurological disorders are characterized by neurologic symptoms not consistent with a primary neurologic pathology. Although neurological disorders are commonly associated with poor sleep, alpha intrusion of slow-wave sleep is not described in cases of functional neurological disorder. We describe a case demonstrating an alpha-delta sleep pattern in a patient presenting with a functional neurological disorder and no perception of sleep. Although alpha-delta sleep is more commonly associated with fibromyalgia, this pattern may be a potential biomarker for the physiology of sleep misperception and potentially functional neurologic symptoms disorder. It is important to recognize this pattern via close sleep electroencephalogram or spectral analysis for patients with concerning clinical histories.
Christian F, Pollak A, Sullivan L. Alpha-delta sleep pattern in an acute functional neurological patient with no perception of sleep.
. 2022;18(6)1711-1715.
Christian F, Pollak A, Sullivan L. Alpha-delta sleep pattern in an acute functional neurological patient with no perception of sleep. J Clin Sleep Med. 2022;18(6)1711-1715.Heat shock proteins (HSP) are significant regulators of cell proliferation, differentiation and apoptosis. HSP participate in ovarian physiology through proliferative and apoptotic mechanisms and the modulation of sex steroid receptor functions. We investigated whether the expression and localisation patterns of HSP in the domestic cat ovary vary with the oestrous cycle stage. Immunohistochemical analysis revealed cell type-specific localisation patterns of HSPD1/HSP60, HSPA/HSP70, HSPC/HSP90 and HSPH/HSP105 in several ovarian cells of the domestic cat, including oocytes, follicular (granulosa and theca cells) and luteal cells, stromal and thecal interstitial cells, stromal cells, and vascular endothelial and smooth muscle cells during the anoestrous, follicular and luteal phases of the oestrous cycle. Western blot results showed that the expression of three HSP (HSPD1/HSP60, HSPA/HSP70 and HSPH/HSP105) varied with the oestrous cycle stage. While the maximal expression of HSPD1/HSP60 and HSPH/HSP105 occurred during the luteal phase, the expression of HSPA/HSP70 was minimal. The expressions of HSPA/HSP70 and HSPH/HSP105 were low during the follicular phase compared to the anoestrous phase. In conclusion, the alterations that occur in the expression of HSP in the domestic cat ovary during the different stages of the oestrous cycle imply that these proteins participate in the regulation of ovarian function under different physiological conditions.The crisis of arsenic (As) accumulation in rhizomes threatens the quality and safety of Panax notoginseng (Burk.) F.H. Chen, which is a well-known traditional Chinese herb with a long clinical history. The uptake of arsenate (AsV) could be suppressed by supplying phosphate (Pi), in which Pi transporters play important roles in the uptake of Pi and AsV. Herein, the P . notoginseng Pi transporter-encoding gene PnPht1;3 was identified and characterised under Pi deficiency and AsV exposure. In this study, the open reading frame (ORF) of PnPht1;3 was cloned according to RNA-seq and encoded 545 amino acids. The relative expression levels revealed that PnPht1;3 was significantly upregulated under phosphate deficiency and AsV exposure. Heterologous expression in Saccharomyces cerevisiae MB192 demonstrated that PnPht1;3 performed optimally in complementing the yeast Pi-transport defect and accumulated more As in the cells. Combined with the subcellular localisation prediction, it was concluded that PnPht1;3 encodes a functional plasma membrane-localised transporter protein that mediates putative high-affinity Pi/H+ symport activity and enhances the uptake of Pi and AsV. Therefore, a better understanding of the roles of the P . notoginseng Pi transporter could provide new insight for solving As accumulation in medicinal plants.
Acute kidney injury is a serious complication that occurs in the context of an acute critical illness or during a postoperative period. Earlier detection of acute kidney injury may facilitate strategies to preserve renal function, prevent further disease progression and reduce mortality. Acute kidney injury diagnosis relies on a rise in serum creatinine levels and/or fall in urine output; however, creatinine is an imperfect marker of kidney function. There is interest in the performance of novel biomarkers used in conjunction with existing clinical assessment, such as NephroCheck
(Astute Medical, Inc., San Diego, CA, USA), ARCHITECT
urine neutrophil gelatinase-associated lipocalin (NGAL) (Abbott Laboratories, Abbott Park, IL, USA), and urine and plasma BioPorto NGAL (BioPorto Diagnostics A/S, Hellerup, Denmark) immunoassays. If reliable, these biomarkers may enable earlier identification of acute kidney injury and enhance management of those with a modifiable disease course.
The objective was to evalul of the role and economic value of these biomarkers and to determine whether or not they provide cost-effective improvements in the clinical outcomes of acute kidney injury patients.
Future studies should evaluate the targeted use of biomarkers among specific patient populations and the clinical impact of their routine use on patient outcomes and management.
This study is registered as PROSPERO CRD42019147039.
This project was funded by the National Institute for Health Research (NIHR) Evidence Synthesis programme and will be published in full in
; Vol. 26, No. 7. See the NIHR Journals Library website for further project information.
This project was funded by the National Institute for Health Research (NIHR) Evidence Synthesis programme and will be published in full in Health Technology Assessment; Vol. 26, No. 7. See the NIHR Journals Library website for further project information.BackgroundAntimicrobial resistance poses a risk for healthcare, both in the community and hospitals. The spread of multidrug-resistant organisms (MDROs) occurs mostly on a local and regional level, following movement of patients, but also occurs across national borders.AimThe aim of this observational study was to determine the prevalence of MDROs in a European cross-border region to understand differences and improve infection prevention based on real-time routine data and workflows.MethodsBetween September 2017 and June 2018, 23 hospitals in the Dutch (NL)-German (DE) cross-border region (BR) participated in the study. During 8 consecutive weeks, patients were screened upon admission to intensive care units (ICUs) for nasal carriage of meticillin-resistant Staphylococcus aureus (MRSA) and rectal carriage of vancomycin-resistant Enterococcus faecium/E. faecalis (VRE), third-generation cephalosporin-resistant Enterobacteriaceae (3GCRE) and carbapenem-resistant Enterobacteriaceae (CRE). All samples were processed in the associated laboratories.