bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sedation Practices for Routine Gastrointestinal Endoscopy: A Systematic Review of Recommendations
Authors: Dossa Fahima , Megetto Olivia , Yakubu Mafo , Zhang David D.Q. , Baxter Nancy N. 
Published: December 2020

Abstract
Background: Sedation is commonly used in gastrointestinal endoscopy; however, considerable variability in sedation practices has been reported. The objective of this review was to identify and synthesize existing recommendations on sedation practices for routine gastrointestinal endoscopy procedures. Methods: We systematically reviewed guidelines and position statements identified through a search of PubMed, guidelines databases, and websites of relevant professional associations from January 1, 2005 to May 10, 2019. We included English-language guidelines/position statements with recommendations relating to sedation for adults undergoing routine gastrointestinal endoscopy. Documents with guidance only for complex endoscopic procedures were excluded. We extracted and synthesized recommendations relating to: 1) choice of sedatives, 2) sedation administration, 3) personnel responsible for monitoring sedated patients, 4) skills and training of individuals involved in sedation, and 5) equipment required for monitoring sedated patients. We assessed the quality of included documents using the Appraisal of Guidelines for Research & Evaluation (AGREE) II tool. Results: We identified 19 guidelines and 7 position statements meeting inclusion criteria. Documents generally agreed that a single, trained registered nurse can administer moderate sedation, monitor the patient, and assist with brief, interruptible tasks. Documents also agreed on the routine use of pulse oximetry and blood pressure monitoring during endoscopy. However, recommendations relating to the drugs to be used for sedation, the healthcare personnel capable of administering propofol and monitoring patients sedated with propofol, and the need for capnography when monitoring sedated patients varied. Only 9 documents provided a grade or level of evidence in support of their recommendations. Conclusions: Recommendations for sedation practices in routine gastrointestinal endoscopy differ across guidelines/position statements and often lack supporting evidence with potential implications for patient safety and procedural efficiency. Registration Number CRD42019141076
Can the physical act of sexual intercourse before frozen embryo transfer improve IVF treatment outcome? A&nbsp;Randomized Clinical Trial
Authors: Yuan Li Hua , Cao Xian Ling , Sun Zhen-Gao 
Published: December 2020

Abstract
Background: Exposure of the female reproductive tract to either seminal plasma or fluid component of the ejaculate is beneficial to achieving successful embryo implantation and normal embryo development. But whether the "physical" component of of sexual intercourse during the peri-transfer period have any influence on FET pregnancy outcome is not clear.Methods: We conducted a randomized trial that included 223 patients undergoing IVF treatment at a University-affiliated reproductive center from 19 June to 20 August 2018. Enrolled patients undergoing IVF treatment were randomized either to engage sexual intercourse using the barrier contraception (n=116) or to abstain (n=107) one night before FET. The follow-up parameters included biochemical pregnancy, clinical pregnancy, early abortion and implantation rate.Results: Patients having intercourse had higher clinical pregnancy rate (51.72% vs. 37.07%, P=0.045) and implantation rate (38.31% vs. 24.77%, P=0.005) compared to those did not engage intercourse. However, there was no significant difference of the spontaneous abortion rate between two groups (11.67% 33 vs. 14.63%, P=0.662).Conclusions: Sexual intercourse before the day of embryo transfer may improve the clinical pregnancy and implantation rates during the frozen- thawed embryo transfer (FET) cycle. However, it should be noted that patients choose only one time for sexual intercourse, that is, the night before embryo transfer. TRIAL REGISTRATION NUMBER: This study was registered at the China Clinical Trial Registration Center, with the registration number ChiCTR1800017209.
HANDY: a device for assessing resistance to mechanical crushing of maize kernel
Authors: Su Yuan , Xu Yang , Cui Tao , Gao Xiaojun , Xia Guoyi , Li Yibo , Qiao Mengmeng , Yu Yingbo 
Published: December 2020

Abstract
Background: How to control the physical damage during maize kernel harvesting is a major problem for both mechanical designers and plant breeders. A limitation of addressing this problem is lacking a reliable method and model for assessing the relation between kernel damage susceptibility and threshing quality. The design, construction, and testing of a portable tool called “HANDY”, which can assess the resistance to mechanical crushing in maize kernel. HANDY can impact the kernel with a special accelerator at a given rotating speed and then cause measurable damage to the kernel. These factors are varied to determine the ideal parameters for operating the HANDY. Results: Baseline testing of the HANDY is performed to determine the initial range of testing parameters. The result shows that the optimum number of test times is one. Breakage index (BI, target index of HANDY), decreased as the moisture content of kernel increased or the rotating speed decreased within the tested range. Furthermore, the HANDY exhibited a greater sensitivity in testing kernels at higher moisture level influence on the susceptibility of damage kernel than that in Breakage Susceptibility tests, particularly when the centrifugation speed is about 1800 r/min and the centrifugal disc type is curved. Considering that the mechanical properties of kernels vary greatly as the moisture content changes, a subsection linear (average goodness of fit is 0.9) to predict the threshing quality is built by piecewise function analysis, which is divided by kernel moisture. Specifically, threshing quality is regarded as a function of the measured result of the HANDY. Five maize cultivars are identified with higher damage resistance among 21 tested candidate varieties. Conclusions: The HANDY provides a quantitative assessment of the mechanical crushing resistance of maize kernel. The BI is demonstrated to be a more robust index than breakage susceptibility (BS) when evaluating threshing quality in harvesting in terms of both reliability and accuracy. This study also offers a new perspective for evaluating the mechanical crushing resistance of grains and provides technical support for breeding and screening maize varieties that are suitable for mechanical harvesting.
Neural progenitor cell-derived nanovesicles promote hair follicle growth via miR-100
Authors: Cao Lei , Tian Tian , Huang Yuanbo , Tao Shiqin , Zhu Xiaohong , Yang Mifang , Gu Jing , Feng Guangdong , Ma Yinni , Xia Rushan , Xu Wenrong , Wang Lei 
Published: December 2020

Abstract
Background: Accumulating evidence shows that mesenchymal stem cell-derived extracellular vesicles (EVs) hold great promise to promote hair growth. However, large-scale production of EVs is still a challenge. Recently, exosome-mimetic nanovesicles (NV) prepared by extruding cells have emerged as an alternative strategy for clinical-scale production. Here, ReNcell VM (ReN) cells, a neural progenitor cell line was serially extruded to produce NV. Results: The ReN-NV were found to promote dermal papilla cell (DPC) proliferation. In addition, in a mouse model of depilation-induced hair regeneration, ReN-NV were injected subcutaneously, resulting in an acceleration of hair follicle (HF) cycling transition at the site. The underlying mechanism was indicated to be the activation of Wnt/β-catenin signaling pathway. Furthermore, miR-100 was revealed to be abundant in ReN-NV and significantly up-regulated in DPCs receiving ReN-NV treatment. miR-100 inhibition verified its important role in ReN-NV-induced β-catenin signaling activation. Conclusion: These results provide an alternative agent to EVs and suggest a strategy for hair growth therapy.
NOX1 inhibition attenuates the development of a pro-tumorigenic environment in experimental hepatocellular carcinoma
Authors: Vandierendonck Astrid , Degroote Helena , Vanderborght Bart , Verhelst Xavier , Geerts Anja , Devisscher Lindsey , Vlierberghe Hans Van 
Published: December 2020

Abstract
Background The poor prognosis of advanced HCC and limited efficacy of current systemic treatments emphasize the need for new or combined targeted therapies. The development of HCC is a multistage process in which liver injury appears in a complex microenvironment associated with oxidative stress. NOX enzymes are the main source of ROS during hepatocarcinogenesis and NOX1 in particular has shown correlation with poor prognosis of HCC patients. This study evaluates the effect of pharmacological NOX1 inhibition on the development and progression of HCC and its effect on the tumor microenvironment.Methods The in vitro cytotoxic effects of the NOX1 inhibitor GKT771 (Genkyotex) on human Huh7 and Hep3B and murine Hepa1-6 HCC cell lines, the human THP1 monocyte cell line and mouse macrophages were evaluated via MTT, LDH activity and CaspGlo® assays. In order to induce in vivo HCC, male SV129 wild-type mice received weekly IP injections of diethylnitrosamine (DEN) (35 mg/kg) for 20-25 weeks. Mice were treated with vehicle or GKT771 (30 mg/kg) via oral gavage, daily or twice daily, in preventive and therapeutic studies. The liver damage was evaluated for inflammation, angiogenesis, fibrosis and HCC development via histology, RT-qPCR, multiplex analyses and ROS levels. Results A concentration-dependent reduction in cellular activity of the human HCC cell lines without cytotoxicity was observed. GKT771 treatment reduced LPS-induced pro-inflammatory bone-marrow derived macrophage polarization. DEN injections resulted in 100% tumor formation and the induction of HCC markers which could be reduced by twice daily dosing of GKT771 at early onset of advanced HCC. DEN-induced HCC resulted in an upregulation of pro-inflammatory, angiogenic and fibrotic markers which was less pronounced in GKT771 treated mice in all treatment regimens. In line, liver fibrosis was induced in HCC mice and this to a lesser extend upon GKT771 treatment.Conclusion NOX1 inhibition showed to be safe and well tolerated and was able to attenuate the induction of a pro-inflammatory, angiogenic and pro-fibrotic microenvironment suggesting that this might be a promising adjuvant therapeutic strategy in the treatment of advanced HCC.
High frequency jet ventilation through mask contribute to oxygen therapy among patients undergoing bronchoscopic intervention under deep sedation
Authors: Yang Mingyuan , Wang Bin , Hou Qingwu , Zhou Yunzhi , Li Na , Wang Hongwu , Li Lei , Cheng Qinghao 
Published: December 2020

Abstract
Background: High frequency jet ventilation (HFJV) is an open ventilating technique to maintain ventilation for emergency or difficult airway. However, whether jet ventilation or conventional oxygen therapy (COT) is more effectively and safe in maintaining adequate oxygenation, is unclear among patients with airway stenosis during bronchoscopic intervention (BI) under deep sedation.Methods: A prospective randomized cohort study was conducted to compare HFJV with normal frequency jet ventilation (NFJV) and COT (high flow oxygen) in oxygen supplementation during BI under deep sedation from March 2020 to August 2020. Patients receiving BI under deep sedation were randomly divided into 3 parallel groups of 50 patients each: the COT group (fractional inspired oxygen (FiO2) of 1.0, 12 L/min), the NFJV group (FiO2 of 1.0, driving pressure of 0.1MPa, and respiratory rate (RR) 15bpm) and the HFJV Group (FiO2 of 1.0, driving pressure of 0.1MPa, and RR of 1200bpm). Pulse oxygen saturation (SpO2), mean blood pressure and heart rate were recorded during the whole procedure. Arterial blood gas was examined and recorded 15 minutes after the procedure was initiated. The procedure duration, dose of anesthetics, and adverse events during BI in the three groups were also recorded.Results: A total of 161 patients were enrolled, with 11 patients excluded. The clinical characteristics were similar among the three groups. The PaO2 of the HFJV group was significantly higher than that of the COT and NFJV groups (P<0.001). PaO2 was significantly correlated with ventilation mode (P<0.001), body mass index (BMI) (P=0.019) and procedure duration (P=0.001). Multiple linear regression showed that only BMI and procedure duration were independent influencing factors of arterial blood gas PaO2 (P=0.040 and P=0.002, respectively). The location of airway lesions and the severity of airway stenosis were not statistically correlated with PaCO2 and PaO2.Conclusions: HFJV could effectively and safely improve the intra-operative PaO2 among patients with airway stenosis during BI in deep sedation, and it did not increase the intra-operative PaCO2 and the risk of hypercapnia. The location of airway lesions and the severity of airway stenosis may not affect oxygenation maintenance during basic and some advanced BI.
Knowledge translation in Africa: Are the structures in place?
Authors: Asamani James Avoka , Nabyonga-Orem Juliet 
Published: December 2020

Abstract
Background: Contextualised evidence to generate local solutions on the progressive path to universal health coverage is essential. However, this evidence must be translated into action. Knowledge translation (KT) experts have highlighted plausible mechanisms to foster the uptake of evidence. The objective of this study was to assess the extent to which structures are in place to boost uptake of evidence, in countries of the WHO African Region.Methods: Employing a cross-sectional survey, we collected data on the availability of structures to foster the uptake of evidence into policy in 35 out of the 47 member states of the WHO African region. Data were analysed using a simple counting of the presence or absence of such structures.Results: Less than half of the countries had evidence collation and synthesis mechanisms. The lack of such mechanisms presents a missed opportunity to identify comprehensive solutions that can respond to health sector challenges. Close to 50% of countries had KT platforms in place. However, the availability of these was in several forms, as an institution-based platform, as an annual event to disseminate evidence and as a series of conferences at the national level. In some countries, KT was mainstreamed into routine health sector performance review processes. Several challenges impacted the functionality of the KT platforms including, inadequate funding and lack of dedicated personnel. Regarding dissemination of evidence, sharing reports, scientific publications and one-off presentations in meetings were the main approaches employed.Conclusion: The availability of KT platforms in the WHO African countries can be described as suboptimal at best and non-existent at the worst. The current structures, where these exist, cannot adequately foster KT. Knowledge translation platforms need to be viewed as sector-wide platforms and mainstreamed in routine health sector performance reviews and policymaking processes. Funds for their functionality must be planned for as part of the health sector budget. Dissemination of evidence needs to be viewed differently to embrace the concept of “disseminate for impact”. Further, funding for dissemination activities needs to be planned for as part of the evidence generation plan.
Microbiological findings in early and late implant loss: an observational clinical cohort study
Authors: Korsch Michael , Prechtl Christopher , Marten Silke-Mareike , Stoll Dominic , Dötsch Andreas 
Published: December 2020

Abstract
BackgroundImplants are a predictable and well-established treatment method in dentistry. Nevertheless, early and late loss must be distinguished when examining possible failures of dental implants. The aim of the study was to report microbiological findings on the surface of implants with severe peri-implantitis, which had to be explanted.MethodsFifty-three specimens of implants from 48 patients without severe general illnesses were examined. The groups investigated were implants that had to be removed in the period of osseointegration (early loss, 13 patients with 14 implants) or after the healing period (late loss, 14 patients with 17 implants). Implant losses were compared with two control groups (implants with no bone loss directly after complete osseointegration, two to four months after implant placement (17 patients with 17 implants) and implants with no bone loss and prosthetic restoration for more than three years (5 patients with 5 implants)). Data for the bacteria located in the peri-implant sulcus were collected using amplification and high-throughput sequencing of the 16S rRNA gene.ResultsThe biofilm composition differed substantially between individuals. In both early and late implant loss, Fusobacterium nucleatum and Porphyromonas gingivalis were found to be abundant. Late-loss implants showed higher bacterial diversity and higher abundances of Treponema, Fretibacterium, Pseudoramibacter and Desulfobulbus, while microbial communities of early-loss implants were very heterogeneous and showed no significantly more abundant bacterial taxa.ConclusionsSpecific peri-implant pathogens were found around implants that were lost after a primarily uneventful osseointegration. P. gingivalis and F. nucleatum frequently colonized the implant in early and late losses and may therefore be a general characteristic of implant loss. The reasons for early losses seem to be multifactorial, with bacterial infection being one potential risk factor, while peri-implant infections are known to be a major risk among other aspects, such as overload or mechanical complications.
CircRNA_0000392 promotes colorectal cancer progression through the miR-193a-5p/PIK3R3/AKT axis
Authors: Xu Hanchen , Liu Yujing , Cheng Peiqiu , Wang Chunyan , Liu Yang , Zhou Wenjun , Xu Yangxian , Ji Guang 
Published: December 2020

Abstract
Background: Circular RNAs (circRNAs), important members of the noncoding RNA family, have been recently revealed to play a role in the pathogenic progression of diseases, particularly in the malignant progression of cancer. With the application of high-throughput sequencing technology, a large number of circRNAs have been identified in tumor tissues, and some circRNAs have been demonstrated to act as oncogenes. In this study, we analyzed the circRNA expression profile in colorectal cancer (CRC) tissues and normal adjacent tissues by high-throughput sequencing. We focused on circRNA_0000392, a circRNA with significantly increased expression in CRCtissues, and further investigated its function in the progression of colorectal cancer.Methods: The expression profile of circRNAs in 6 pairs of CRC tissues and normal adjacent tissues was analyzed by RNA sequencing. We verified the identified differentially expressed circRNAs in additional samples by qRT-PCR and selected circRNA_0000392 to evaluate its associations with clinicopathological features. Then, we knocked down circRNA_0000392 in CRC cells and investigated the in vitro and in vivo effects using functional experiments. Dual luciferase and RNA pull-down assays were performed to further explore the downstream potential molecular mechanisms.Results: CircRNA_0000392 was significantly upregulated in CRC compared with normal adjacent tissues and cell lines. The expression level of circRNA_0000392 was positively correlated with the malignant progression of CRC. Functional studies revealed that reducing the expression of circRNA_0000392 could inhibit the proliferation and invasion of CRC both in vitro and in vivo. Mechanistically, circRNA­_0000392 could act as a sponge of miR-193a-5p and regulate the expression of PIK3R3, affecting the activation of the AKT-mTOR pathway in CRC cells.Conclusions: CircRNA_0000392 functions as an oncogene through the miR-193a-5p/PIK3R3/Akt axis in CRC cells, suggesting that circRNA_0000392 is a potential therapeutic target for the treatment of colorectal cancer and a predictive marker for CRC patients.
Differential Effects of Chronic Immunosuppression on Behavioral, Epigenetic and Alzheimer’s Disease-Associated Markers in 3xtg-AD Mice&nbsp;
Authors: Kapadia Minesh , Mian Firoz M. , Ma Donglai , Hutton Craig P. , Azam Amber , Narkaj Klotilda , Cao Chuanhai , Brown Breanna , Michalski Bernadeta , Morgan David , Forsythe Paul , Zovkic Iva B. , Fahnestock Margaret , Sakic Boris 
Published: December 2020

Abstract
Background: Circulating autoantibodies and sex-dependent discrepancy in prevalence are unexplained phenomena of Alzheimer’s disease (AD). Using the 3xTg-AD mouse model, we reported that adult males show early manifestations of systemic autoimmunity, increased emotional reactivity, enhanced expression of the histone variant macroH2A1 in the cerebral cortex, and loss of plaque/tangle pathology. Conversely, adult females display less severe autoimmunity and retain their AD-like phenotype. This study examines the link between immunity and other traits of the current 3xTg-AD model. Methods: Young 3xTg-AD and wild-type mice drank a sucrose-laced 0.4 mg/ml solution of the immunosuppressant cyclophosphamide on weekends for 5 months. After behavioral phenotyping at 2 and 6 months of age, we assessed organ mass, serologic markers of autoimmunity, molecular markers of early AD pathology and expression of genes associated with neurodegeneration. Results: Chronic immunosuppression prevented hematocrit drop and reduced soluble Aβ in 3xTg-AD males while normalizing the expression of histone variant macroH2A1 in 3xTg-AD females. This treatment also reduced hepatosplenomegaly, lowered autoantibody levels, and increased the effector T cell population while decreasing the proportion of regulatory T cells in both sexes. Exposure to cyclophosphamide, however, neither prevented reduced brain mass and BDNF expression nor normalized increased tau and anxiety-related behaviors. Conclusion: The results suggest that systemic autoimmunity increases soluble Aβ production and affects transcriptional regulation of macroH2A1 in a sex-related manner. Despite the complexity of multisystem interactions, 3xTg-AD mice can be a useful in vivo model for exploring the regulatory role of autoimmunity in the etiology of AD-like neurodegenerative disorders.