Tag: pubmed

Acta Med Acad. 2022 Aug;51(2):85-91. doi: 10.5644/ama2006-124.376.

ABSTRACT

OBJECTIVES: Superficial benign parotid tumors are a common neoplasm of the salivary glands. Different surgical procedures have been applied for partial superficial parotidectomy (PSP) and extracapsular dissection (ECD), which are the two predominant surgical techniques. Our study aimed to evaluate PSP versus ECD for benign parotid tumors, in relation to post-operative complications and recurrence rates.

MATERIALS AND METHODS: 266 patients who underwent parotidectomies of benign superficial parotid tumors were evaluated retrospectively. The first group (PSP group) was composed of 143 patients who underwent PSP, and the second group (ECD group) was composed of 123 patients who underwent ECD.

RESULTS: In the ECD group the rate of patients presenting with total postoperative permanent facial nerve paralysis, House-Brackmann grade III, was 0.8%, whereas in the PSP group it was 1.4%. Frey’s syndrome was only reported in the PSP group. Salivary fistula occurred in both groups at similar rates. Sensation dysfunction due to greater auricular nerve division occurred in 72% patients in the PSP group and 10.6% in the ECD group. No statistical difference regarding recurrence rates was found between the two groups.

CONCLUSIONS: Both ECD and PSP procedures are safe surgical options for superficial parotidectomy in the treatment of benign tumors, with similar recurrence rates and post-surgical complications, apart from sensation abnormalities due to more extensive auricular nerve division.

PMID:36318000 | DOI:10.5644/ama2006-124.376

Br J Math Stat Psychol. 2022 Nov 1. doi: 10.1111/bmsp.12290. Online ahead of print.

ABSTRACT

Response process data collected from human-computer interactive items contain detailed information about respondents’ behavioural patterns and cognitive processes. Such data are valuable sources for analysing respondents’ problem-solving strategies. However, the irregular data format and the complex structure make standard statistical tools difficult to apply. This article develops a computationally efficient method for exploratory analysis of such process data. The new approach segments a lengthy individual process into a sequence of short subprocesses to achieve complexity reduction, easy clustering and meaningful interpretation. Each subprocess is considered a subtask. The segmentation is based on sequential action predictability using a parsimonious predictive model combined with the Shannon entropy. Simulation studies are conducted to assess the performance of the new method. We use a case study of PIAAC 2012 to demonstrate how exploratory analysis for process data can be carried out with the new approach.

PMID:36317951 | DOI:10.1111/bmsp.12290

Turk J Pharm Sci. 2022 Oct 31;19(5):583-588. doi: 10.4274/tjps.galenos.2021.09216.

ABSTRACT

OBJECTIVES: Gomphandra tetrandra (Wall.) Sleumer (leaves) belonging to the family Stemonuraceae was investigated for preliminary phytochemical screening and evaluating their pharmacological activities in various pharmacological models.

MATERIALS AND METHODS: The crude methanolic extract was screened with different chemical reagents for the qualitative detection of different phytochemical groups. The peripheral analgesic function was determined using the acetic acid-induced writhing procedure and sedative-hypnotic behaviors were assessed using hole-board, open field, and hole-cross tests using different doses of the extract (200 mg/kg and 400 mg/kg body weight).

RESULTS: Phytochemical screening revealed that methanolic extract of G. tetranda leaves contains steroids, gums, mucilages, phytosterols, carbohydrates, and flavonoids. The crude methanolic extract at 200 mg/kg and 400 mg/kg doses showed statistically significant activity in acetic acid-induced writhing inhibition test with 60% (p<0.01) and 76.47% (p<0.01) inhibition, respectively, compared to control. The extract also had dose-dependent substantial (p<0.01) sedative-hypnotic activities compared with diazepam in the hole-board, open field, and hole-cross tests.

CONCLUSION: It may be assumed that the methanolic leaf extract of G. tetrandra possesses a strong possibility of having analgesic and sedative-hypnotic activity due to the presence of bioactive compounds in its leaves. Moreover, observed results have opened a new era of in-depth research to discover the possible mechanism of analgesic and sedative-hypnotic activity.

PMID:36317941 | DOI:10.4274/tjps.galenos.2021.09216

Heart Surg Forum. 2022 Sep 12;25(5):E638-E644. doi: 10.1532/hsf.4815.

ABSTRACT

BACKGROUND: Ventricular septal defect (VSD) and atrial septal defect (ASD) are congenital heart diseases. The techniques of transthoracic closure (TC) and percutaneous closure (PC) for the treatment of VSD and ASD have continuously improved and matured. This study aimed to retrospectively analyze the therapeutic effects of TC and PC on VSD and ASD patients.

METHODS: We retrospectively reviewed 928 patients (552 VSD and 376 ASD) who had undergone TC or PC guided by transesophageal ultrasound at the Department of Cardiac Macrovascular Surgery of the First Affiliated Hospital of Nanchang University between August 2010 and August 2020. We collected and evaluated the clinical data of the patients, including age, gender, weight, inlet and outlet diameters of defect, and the operation results of TC and PC. Descriptive statistics were used to analyze means and standard deviations (SD), and the Chi-square test was used to evaluate the difference between groups.

RESULTS: Among the 928 patients who were treated with the closure operation, there were no casualties, with 907 patients (97.7%) showing successful closure. Among the 552 VSD patients who were treated with TC, 540 showed successful close, while 12 cases required extracorporeal circulation after the failure of TC. Among the 376 patients with ASD, 256 patients were treated with TC, of which 251 were successful, and five were failures, including three shedding cases. In addition, among the 120 patients who were treated with PC, 116 were successful, and four were failures, including two shedding cases. Postoperative follow up for patients with successful closure operations demonstrated that the complications of aortic and tricuspid regurgitation, hydro-pericardium, III° atrioventricular block, shedding of closure umbrella, hemolysis, and thrombosis had not occurred.

CONCLUSION: Closure operation of VSD and ASD by esophageal ultrasound has the advantages of lower trauma and blood loss, shorter hospital stay, simple operation, fewer postoperative complications, and significant therapeutic efficacy.

PMID:36317916 | DOI:10.1532/hsf.4815

Heart Surg Forum. 2022 Sep 28;25(5):E709-E714. doi: 10.1532/hsf.4825.

ABSTRACT

OBJECTIVE: This study aimed to evaluate the efficacy and safety of high-frequency oscillation ventilation combined with volume guarantee (HFOV-VG) in preterm infants with acute hypoxemic respiratory failure (AHRF) after patent ductus arteriosus ligation.

METHODS: We retrospectively analyzed the clinical data of 41 preterm infants, who were ventilated for AHRF after patent ductus arteriosus ligation between January 2020 and January 2022. HFOV alone was used in 20 of the 41 infants, whereas HFOV-VG was used in the other 21 infants.

RESULTS: There was no statistically significant difference in the demographic information and baseline characteristics of preterm infants included in the study. The average frequency tidal volume (VThf) of the HFOV-VG group was lower than that of the HFOV group (2.6 ± 0.6 mL versus 1.9 ± 0.3 mL, P < .001). In addition, the incidence of hypocapnia and hypercapnia in infants supported with HFOV-VG was significantly lower (15 versus 8, P < .001; 12 versus 5, P < .001). Furthermore, the duration of invasive ventilation in the HFOV-VG group also was lower than in the HFOV group (3.7 ± 1.2 days versus 2.1 ± 1.0 days, P < .01).

CONCLUSION: Compared with HFOV alone, HFOV-VG decreases VThf levels and reduces the incidence of hypercapnia and hypocapnia in preterm infants with acute hypoxic respiratory failure after patent ductus arteriosus ligation.

PMID:36317914 | DOI:10.1532/hsf.4825

Turk J Pharm Sci. 2022 Oct 31;19(5):543-551. doi: 10.4274/tjps.galenos.2021.96603.

ABSTRACT

OBJECTIVES: Drug information systems are commonly used by professionals to assist in the identification of drug interactions and to ensure the safe use of medications. Real-world evidence about the comparison of different drug interaction sources is scarce. We aimed to compare two drug interaction databases to identify interactions in a population-based survey.

MATERIALS AND METHODS: This is a cross-sectional study based on a previous survey performed in the city of Manaus, Brazil, in 2019. We included adults aged 18 years and over, who used two or more medicines 15 days before the interview. To assess potential drug interactions, we searched Micromedex and UpToDate databases. The primary outcome was the prevalence of potential drug interactions in each database. Weighted Kappa statistics were calculated to assess agreement on the presence of drug interaction, documentation and severity.

RESULTS: A total of 752 participants were included in the study. The prevalence of drug interactions was 43.8% [95% confidence interval (CI): 40.2, 47.3%] in UpToDate and 30.2% (95% CI: 26.9, 33.5%), in Micromedex. The agreement related to drug interactions between the two databases was fair (Kappa: 0.631). For severity (Kappa: 0.398) and documentation (Kappa: 0.311), the agreement was poor.

CONCLUSION: Agreement among compared databases was sub-optimal. Better quality and transparency of evidence available in drug interaction sources are needed to support informed healthcare professionals’ decision.

PMID:36317874 | DOI:10.4274/tjps.galenos.2021.96603

Gut Liver. 2022 Nov 1. doi: 10.5009/gnl220025. Online ahead of print.

ABSTRACT

BACKGROUND/AIMS: Endoscopic submucosal dissection is a widely used treatment for gastric epithelial neoplasms. Accurate delineation of the horizontal margins is necessary for the complete resection of gastric epithelial neoplasms. Recently, image-enhanced endoscopy has been used to evaluate horizontal margins of gastric epithelial neoplasms. The aim of this study was to investigate whether I-SCAN-optical enhancement (I-SCAN-OE) is superior to chromoendoscopy in evaluating the horizontal margin of gastric epithelial neoplasms.

METHODS: This was a multicenter, prospective, and randomized trial. The participants were divided into two groups: I-SCAN-OE and chromoendoscopy. For both groups, we first evaluated the horizontal margins of early gastric cancer or high-grade dysplasia using white-light imaging, and then evaluated, the horizontal margins using I-SCAN-OE or chromoendoscopy. We devised a unique scoring method based on the pathological results obtained after endoscopic submucosal dissection to accurately evaluate the horizontal margins of gastric epithelial neoplasms. The delineation scores of both groups were compared, as were the ratios of positive/negative horizontal margins.

RESULTS: In total, 124 patients were evaluated for gastric epithelial neoplasms, of whom 112 were enrolled in the study. A total of 112 patients participated in the study, and 56 were assigned to each group (1:1). There was no statistically significant difference in the delineation scores between the groups (chromoendoscopy, 7.80±1.94; I-SCAN-OE, 8.23±2.24; p=0.342).

CONCLUSIONS: I-SCAN-OE did not show superiority over chromoendoscopy in delineating horizontal margins of gastric epithelial neoplasms.

PMID:36317515 | DOI:10.5009/gnl220025

Gut Liver. 2022 Nov 1. doi: 10.5009/gnl220104. Online ahead of print.

ABSTRACT

BACKGROUND/AIMS: The incidence and prognosis of gastric cancer (GC) shows sex difference. This study aimed to evaluate the effect of body mass index (BMI) on GC survival depending on sex.

METHODS: The sex, age, location, histology, TNM stages, BMI, and survival were analyzed in GC patients from May 2003 to February 2020 at the Seoul National University Bundang Hospital.

RESULTS: Among 14,688 patients, there were twice as many males (66.6%) as females (33.4%). However, under age 40 years, females (8.6%) were more prevalent than males (3.1%). Cardia GC in males showed a U-shaped distribution for underweight (9.6%), normal (6.4%), overweight (6.1%), obesity (5.6%), and severe obesity (9.3%) but not in females (p=0.003). Females showed decreased proportion of diffuse-type GC regarding BMI (underweight [59.9%], normal [56.8%], overweight [49.5%], obesity [44.8%], and severe obesity [41.7%]), but males did not (p<0.001). Both sexes had the worst prognosis in the underweight group (p<0.001), and the higher BMI, the better prognosis in males, but not females. Sex differences in prognosis according to BMI tended to be more prominent in males than in females in subgroup analysis of TNM stages I, II, and III and the operative treatment group.

CONCLUSIONS: GC-specific survival was affected by BMI in a sex-dependent manner. These differences may be related to genetic, and environmental, hormonal factors; body composition; and muscle mass (Trial registration number: NCT04973631).

PMID:36317512 | DOI:10.5009/gnl220104

Phys Chem Chem Phys. 2022 Nov 1. doi: 10.1039/d2cp03948f. Online ahead of print.

ABSTRACT

The emergence and development of radical luminescent materials is a huge breakthrough toward high-performance organic light-emitting diodes (OLEDs) without spin-statistical limits. Herein, we design a series of radicals based on tris(2,4,6-trichlorophenyl)methyl (TTM) by combining skeleton-engineering and periphery-engineering strategies, and present some insights into how different chemical modifications can modulate the chemical stability and luminescence properties of radicals by quantum chemistry methods. Firstly, through the analysis of the geometric structure changes from the lowest doublet excited state (D₁) to the doublet ground state (D₀) states, the emission energy differences between the BN orientation isomers are explained, and it is revealed that the radical with a smaller dihedral angle difference can more effectively suppress the geometric relaxation of the excited states and bring a higher emission energy. Meanwhile, a comparison of the excited state properties in different radicals can help us to disclose the luminescence behavior, that is, the enhanced luminescent intensity of the radical is caused by the intensity borrowing between the charge transfer (CT) state and the dark locally excited (LE) state. In addition, an efficient algorithm for calculating the internal conversion rate (k_IC) is introduced and implemented, and the differences in k_IC values between designed radicals are explained. More specifically, the delocalization of hole and electron wave functions can reduce nonadiabatic coupling matrix elements (NACMEs), thus hindering the non-radiative decay process. Finally, the double-regulation of chemical stability and luminescence properties was realized through the synergistic effect of skeleton-engineering and periphery-engineering, and to screen the excellent doublet emitter (BN-41-MPTTM) theoretically.

PMID:36317503 | DOI:10.1039/d2cp03948f

Am J Clin Pathol. 2022 Nov 1:aqac129. doi: 10.1093/ajcp/aqac129. Online ahead of print.

ABSTRACT

OBJECTIVES: With a substantial number of patients with multiple myeloma (MM) experiencing disease relapse, the quest for more sensitive methods to assess deeper responses indicative of cure continues.

METHODS: In this prospective analysis of 170 patients with MM at day 100 after autologous stem cell transplant, we evaluated the predictive value of conventional response, measurable residual disease (MRDTOTAL: the aberrant percentage of plasma cells [PC%] among total bone marrow cells), and neoplastic plasma cell index scores (NPCI: the aberrant PC% of total PCs).

RESULTS: Significantly better progression-free survival (PFS) and overall survival (OS) were observed with deepening conventional response. Conventional response-based stratification within the MRD-positive and MRD-negative subgroups showed a significantly higher PFS (hazard ratio [HR], 3.11; P < .005) and OS (HR, 3.08; P = .01) in the conventional response-positive/MRD-positive group compared with the conventional response-negative/MRD-positive group. Using K-adaptive partitioning to find the optimum threshold for MRD, patients achieving less than 0.001% MRDTOTAL had superior PFS (MRDTOTAL 0.001% to <0.1%: HR, 6.66, P < .005; MRDTOTAL ≥0.1%: HR, 11.52, P < .005) and OS (MRDTOTAL 0.001% to <0.1%: HR, 5.3, P < .05; MRDTOTAL ≥0.1%: HR = 9.21, P < .005). The C index and Akaike information criterion metrics demonstrated the superior performance of the NPCI compared with MRDTOTAL in predicting treatment outcome.

CONCLUSIONS: Progressive deepening of response, conventional as well as MRD, correlates with superior survival outcomes. The NPCI proved to be a superior determinant of survival and can be explored as a better statistic than MRD.

PMID:36317501 | DOI:10.1093/ajcp/aqac129