Nevin Manimala

Neurol Sci. 2023 Apr 17. doi: 10.1007/s10072-023-06793-x. Online ahead of print.

ABSTRACT

INTRODUCTION: The symptom of constipation has been confirmed as an early diagnose criteria for Parkinson’s disease (PD). Furthermore, evidences suggest that pathogenesis of PD initiates in gut, rather than brain. If so, identifying biomarkers for constipation in PD might have potentials to assist early diagnosis and initial treatment.

METHOD: We first identified that microRNA 29c (miR-29c) was dysregulated both in PD and constipation patients through bioinformatics analysis. Then, serological analysis of the expression of miR-29c in 67 PD patients with constipation (PD-C), 51 PD patients without constipation (PD-NC), and 50 healthy controls (HC) was carried out by qPCR. Demographic and clinical features were also compared. Patients in PD-C group were further classified into two groups: those with prodromal stage constipation (PD-C-Pro) (n = 36) and those with clinical stage constipation (PD-C-Clinic) (n = 31), to explore their different characteristics.

RESULTS: The levels of miR-29c in PD-C group were higher than that in PD-NC group, both higher than HC group. PD-C-Pro group’s miR-29c levels were statistically higher compared with PD-C-Clinic group’s. What is more, PD-C group had higher scores of MDS-UPDRS-I, NMSS, NMSS3, NMSS4, NMSS6, NMSS9, SCOPA-AUT, HAMD, HAMA, RBDSQ, CSS, and PACQOL compared with PD-NC party. Relative to the PD-C-Clinic, patients in PD-C-Pro group had higher MDS-UPDRS-I, NMSS, NMSS3, HAMD, and HAMA scores, and were more likely to have RBD.

CONCLUSION: Our results indicated that miR-29c seems to be an underlying cause for developing constipation in patients with PD and PD-C identifies a group of patients with more severe non-motor impairment, prominent neuropsychiatric disorders, and possible RBD conversion as well as a substandard quality of life. We further confirmed that there is a close relationship between symptoms representing the same pathological origin, especially constipation and RBD.

PMID:37067722 | DOI:10.1007/s10072-023-06793-x

Biol Trace Elem Res. 2023 Apr 17. doi: 10.1007/s12011-023-03664-6. Online ahead of print.

ABSTRACT

Polycystic ovary syndrome (PCOS) is a heterogeneous endocrinological syndrome characterized by hyperandrogenism of ovarian origin and is often considered a predisposing factor for metabolic disorders. The objective of the study was to investigate serum levels of (a) trace elements (copper (Cu), zinc (Zn), magnesium (Mg), selenium (Se), iron (Fe), chromium (Cr), and manganese (Mn)); and (b) biochemical parameters (glucose, cholesterol, triglycerides, high-density lipoprotein (HDL-C), low-density lipoprotein (LDL-C), albumin, total protein, creatinine, and C-reactive protein (CRP) with risk of PCOS. Another objective was to explore the relationship between serum trace elements and biochemical variables. Serum trace elements were estimated by inductively coupled plasma mass spectrometry (ICP-MS) and biochemical parameters were estimated by colorimetric methods in 99 PCOS cases and 82 controls. Linear and non-linear associations of serum variables with PCOS risk were studied under logistic, probit, GAM, and BKMR model. Statistical analyses were performed using IBM SPSS 22.0 and R package version 4.2.1. All studied serum trace elements (except Zn) are significantly associated with PCOS. Combined effect analysis revealed Mg-Se and Fe-Cu association with PCOS risk. A significant association of cholesterol, HDL-C, LDL-C, CRP, and albumin was observed. Furthermore, linear regression analysis suggests an association between Mg-Cu and Mg-Fe-Mn with HDL-C; Fe and Cr-Cu with albumin; and Cu-Se with cholesterol and LDL-C both.

PMID:37067720 | DOI:10.1007/s12011-023-03664-6

Environ Sci Pollut Res Int. 2023 Apr 17. doi: 10.1007/s11356-023-26866-w. Online ahead of print.

ABSTRACT

As a typical carbamate pesticide, methomyl was once widely used in agriculture for its excellent broad-spectrum insecticidal effect. However, due to its high toxicity, long half-life, and difficult degradation properties, it poses a serious challenge to water environment pollution. In this study, an electrode-free discharge microwave-induced plasma technology was used to rapidly and efficiently degrade methomyl in aqueous solution. In this experiment, the statistical design of experiments (DOE) was adopted to optimize the plasma degradation parameters. Under the optimized parameters (P = 140 W, D = 0 mm, R = 0.5 L/min), 78.4% removal of 50 mg/L of methomyl was achieved after 8 min. The optical emission spectrometry and free radical detection experiments showed that the active substances generated by the collision reaction between plasma and water molecules occurring at the gas-liquid interface were the key factors to exert the degradation effect. The degradation rate of methomyl decreased by 73.2% after the addition of tert-butanol (OH burster), while it decreased by only about 12.0% after the addition of peroxidase. These implied that ∙OH was largely responsible for methomyl degradation. In addition, based on the detected intermediates, possible degradation mechanisms and pathways were analyzed.

PMID:37067709 | DOI:10.1007/s11356-023-26866-w

Environ Sci Pollut Res Int. 2023 Apr 17. doi: 10.1007/s11356-023-26381-y. Online ahead of print.

ABSTRACT

The present work aimed to study, predict and understand benzene migration that occurred during an industrial spill using numerical simulation by computational fluid dynamics. Advection, diffusion and adsorption were the main mechanisms considered that governed the spill incident. The incident occurred due to a fracture under a fuel oil storage tank. The tank was located on a hill 18 m high, and the initial value of benzene concentration (soil saturation) was 60 ppm. When the spill was discovered, samples in the affected zone were taken using an experimental design. Many samples showed a greater concentration of benzene than allowed by Mexican Official Standards (MOSs) (15 ppm). The concentrations found 100 m away from the spill were around 60 to 15 ppm. Due to the spill being under the tank, it was difficult to discover. The numerical simulation provided an estimate that the spill started around 2 years ago. The type of soil in the afflicted zone is rocky, and, consequently, it is difficult to estimate how long it will take to reach the concentration allowed by the MOSs, but the numerical simulation predicts that this concentration will be reached in 14 years. Experimental values of the spill contaminant concentration were statistically similar to the CFD estimated data (p < 0.05).

PMID:37067704 | DOI:10.1007/s11356-023-26381-y

J Robot Surg. 2023 Apr 17. doi: 10.1007/s11701-023-01600-3. Online ahead of print.

ABSTRACT

As life expectancy continues to rise, there is a growing cohort of octogenarians that can have oncologic benefit from a partial nephrectomy. This study aims to analyze a large national dataset to compare the safety and outcomes in octogenarians receiving a nephrectomy. The American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database was utilized. All subjects 80-89 years old who received a minimally invasive partial nephrectomy (CPT: 50543) or radical nephrectomy (CPT: 50545, 50546) from 2016 to 2020 were included. Baseline characteristics, comorbidities, and postoperative complications were compared. Chi-square analysis and student t-tests were used to analyze categorical and continuous variables, respectively. 1765 procedures were performed on octogenarians, of which 1299 (73.6%) received a radical nephrectomy and 466 (26.4%) received a partial nephrectomy. When comparing preoperative comorbidities, octogenarians undergoing partial nephrectomy had lower rates of dyspnea at exertion (7.3 vs. 10.6%, p = 0.04), COPD (2.8 vs. 5.9%, p = 0.01), and chronic steroid use (1.5 vs. 3.3%, p = 0.04). No statistically significant differences were seen in any minor (Clavien 1/2) or major post-operative complications (Clavien 3/4). Readmissions were higher in those who received a partial nephrectomy (10.5 vs. 6.5%, p = 0.01); however, there were no significant differences in reoperation (2.4 vs. 1.7%, p = 0.36) or mortality (1.3 vs. 1.8%, p = 0.48). Partial nephrectomy is a safe and feasible operation in octogenarians. Preoperative counseling and appropriate patient selection remain imperative.

PMID:37067699 | DOI:10.1007/s11701-023-01600-3

Int Ophthalmol. 2023 Apr 17. doi: 10.1007/s10792-023-02702-5. Online ahead of print.

ABSTRACT

PURPOSE: To compare characteristics of unilateral vs. bilateral thyroid eye disease (TED).

METHODS: This retrospective analytical cross-sectional study was conducted on patients with TED who were evaluated at an academic referral center over a 6-year period. We compared demographics, activity (clinical activity score) and severity (EUGOGO classification) of TED, thyroid disease duration, TED duration, the time interval between thyroid and eye involvement, thyroid function status, and clinical signs between bilateral and unilateral TED.

RESULTS: Three hundred eighty-three patients including 213 females (55.6%), who had a mean age of 40.23 ± 13.72 years, were enrolled. Active TED was seen in 8.8% of bilateral and none of unilateral cases (P = 0.04). Bilateral TED patients had more severe disease (P = 0.001). The distribution of hyperthyroidism, hypothyroidism, and euthyroidism was significantly different between unilateral and bilateral groups (P = 0.001). Abnormal ocular motility was present in 26.3% versus 2.3% of bilateral and unilateral ones, respectively (P = 0.001). Proptosis was more prevalent in bilateral than unilateral cases (P = 0.001). We did not observe any statistically significant difference between the two groups in others variables.

CONCLUSION: Bilateral TED patients present with more severity, activity, movement abnormality, proptosis, and hyperthyroidism.

PMID:37067696 | DOI:10.1007/s10792-023-02702-5

ACS Synth Biol. 2023 Apr 17. doi: 10.1021/acssynbio.2c00662. Online ahead of print.

ABSTRACT

Oxygen-independent, flavin mononucleotide-based fluorescent proteins (FbFPs) are promising alternatives to green fluorescent protein in anaerobic contexts. Deep mutational scanning performs systematic profiling of protein sequence-function relationships but has not been applied to FbFPs. Focusing on CreiLOV from Chlamydomonas reinhardtii, we created and analyzed two comprehensive mutant collections: (1) single-residue, site-saturation mutagenesis libraries covering all 118 residues; and (2) a full combinatorial metagenesis library among 20 mutations at 15 residues, where mutation and residue selection was based on single-site mutagenesis results. Notably, the second type of library is indispensable to study higher-order epistasis but underrepresented in the literature. Using optimized FACS-seq assays, 2,185 (>92.5%) out of 2,360 possible single-site mutants and 165,428 (>89.7%) out of 184,320 possible combinatorial mutants were reliably assigned with fitness values. We constructed statistical and machine-learning models to analyze the CreiLOV data set, enabling accurate fitness prediction of higher-order mutants using lower-order mutagenesis data. In addition, we successfully isolated CreiLOV variants with improved fluorescence quantum yield and thermostability. This work provides new empirical data and design rules to engineer combinatorial protein variants.

PMID:37066862 | DOI:10.1021/acssynbio.2c00662

Biometrics. 2023 Apr 17. doi: 10.1111/biom.13870. Online ahead of print.

ABSTRACT

Finite mixture of regressions (fmr) are commonly used to model heterogeneous effects of covariates on a response variable in settings where there are unknown underlying subpopulations. fmrs, however, cannot accommodate situations where covariates’ effects also vary according to an “index” variable-known as finite mixture of varying coefficient regression (fm-vcr). Although complex, this situation occurs in real data applications: the osteocalcin (OCN) data analyzed in this manuscript presents a heterogeneous relationship where the effect of a genetic variant on OCN in each hidden subpopulation varies over time. Oftentimes, the number of covariates with varying coefficients also presents a challenge: in the OCN study, genetic variants on the same chromosome are considered jointly. The relative proportions of hidden subpopulations may also change over time. Nevertheless, existing methods cannot provide suitable solutions for accommodating all these features in real data applications. To fill this gap, we develop statistical methodologies based on regularized local-kernel likelihood for simultaneous parameter estimation and variable selection in sparse fm-vcr models. We study large-sample properties of the proposed methods. We then carry out a simulation study to evaluate the performance of various penalties adopted for our regularized approach and ascertain the ability of a bic-type criterion for estimating the number of subpopulations. Finally, we applied the fm-vcr model to analyze the OCN data and identified several covariates, including genetic variants, that have age-dependent effects on osteocalcin. This article is protected by copyright. All rights reserved.

PMID:37066855 | DOI:10.1111/biom.13870

Int J Dent Hyg. 2023 Apr 17. doi: 10.1111/idh.12681. Online ahead of print.

ABSTRACT

OBJECTIVES: This cross-sectional study was to determine the coronavirus disease 2019 (COVID-19) vaccination intention of clinical dental hygienists in South Korea and the factors that influence vaccination intention.

METHODS: COVID-19 vaccination intention of the 500 participants was confirmed through a survey including the following options: ‘I will vaccinate (VAC)’, ‘I will not vaccinate (NoVAC)’ and ‘I do not know if I should get vaccinated (UNK)’. A Chi-square test was performed to determine whether there were differences in COVID-19 vaccination intention according to the general characteristics of the participants, degree of infection control knowledge (Score-K) and practice (Score-P) in response to COVID-19, fears over COVID-19 (Fear-C) and the level of anxiety before (GAD_Before ) and after (GAD_After ) the COVID-19 pandemic. Multiple logistic regression was performed to identify factors affecting VAC and NoVAC by setting the base category as UNK. The p-values of <0.05 were considered statistically significant.

RESULTS: According to the analysis, 44.8%, 18.8% and 36.4% of participants selected VAC, NoVAC and UNK respectively. There were significant differences in vaccination intention according to age, monthly income, residential area, symptoms related to COVID-19, Score-K, Fear-C and GAD_Before . Compared to UNK, < $2000 monthly income, Score-K and Fear-C variables significantly influenced the opinion of VAC. Compared to the answer UNK, monthly incomes of $2000 to $2360 and $2360 to $2730 in residential areas significantly influenced the opinion of NoVAC.

CONCLUSIONS: The variables influencing vaccination intention were monthly income, residential area, Score-K and Fear-C.

PMID:37066829 | DOI:10.1111/idh.12681

Aesthet Surg J. 2023 Apr 17:sjad100. doi: 10.1093/asj/sjad100. Online ahead of print.

ABSTRACT

BACKGROUND: Infraorbital hollowing can be addressed with hyaluronic acid soft tissue fillers. A prospective, multicenter, evaluator-blinded, randomized, controlled study (NCT03418545) demonstrated the safety and effectiveness of Juvéderm Volbella XC (VYC-15L, Allergan Aesthetics, an AbbVie company, Irvine, CA) in adults seeking correction for infraorbital hollows.

OBJECTIVE: The objective of the current analysis was to examine patient-reported outcomes (PROs) from the clinical study.

METHODS: Participants were randomized 3:1 to the VYC-15L treatment group or the no-treatment control group. Outcome measurements included: evaluating investigator (EI)- and participant-assessed Global Aesthetic Improvement Scale (GAIS) scores, as well as participant responses to the FACE-Q Appraisal of Lower Eyelids, questions on treatment satisfaction, the extent to which they were bothered by dark circles under their eyes, and willingness to recommend treatment to a friend.

RESULTS: The modified intent-to-treat population included 135 participants (median age, 47 years; 91.9% female). At Month 3, the majority of VYC-15L-treated participants showed improvements in the EI- and participant-assessed GAIS. The mean change from baseline to Month 3 score (32.7% increase) showed statistically significant improvement (mean: 17.8, SD: 19.8, p < 0.0001). At Months 3 and 12 post-treatment, most VYC-15L-treated participants reported feeling satisfied with treatment and not feeling moderately or very bothered by dark circles under their eyes, and would recommend treatment to a friend.

CONCLUSIONS: The current analysis demonstrated the effectiveness of VYC-15L treatment to reduce infraorbital hollowing and to improve overall satisfaction using validated PROs. Participant-assessed improvements aligned with EI-assessed outcomes and lasted through 1 year.

PMID:37066828 | DOI:10.1093/asj/sjad100