bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evidence That the Central Nervous System Can Induce a Modification at the Neuromuscular Junction That Contributes to the Maintenance of a Behavioral Response
Authors: Hoy Kevin C. , Strain Misty M. , Turtle Joel D. , Lee Kuan H. , Huie J. Russell , Hartman John J. , Tarbet Megan M. , Harlow Mark L. , Magnuson David S.K. , Grau James W. 
Published: October 2020

Neurons within the spinal cord are sensitive to environmental relations and can bring about a behavioral modification without input from the brain. For example, rats that have undergone a thoracic (T2) transection can learn to maintain a hind leg in a flexed position to minimize exposure to a noxious electrical stimulation (shock). Inactivating neurons within the spinal cord with lidocaine, or cutting communication between the spinal cord and the periphery (sciatic transection), eliminates the capacity to learn, which implies that it depends on spinal neurons. Here we show that these manipulations have no effect on the maintenance of the learned response, which implicates a peripheral process. EMG showed that learning augments the muscular response evoked by motoneuron output and that this effect survives a sciatic transection. Quantitative fluorescent imaging revealed that training brings about an increase in the area and intensity of ACh receptor labeling at the neuromuscular junction (NMJ). It is hypothesized that efferent motoneuron output, in conjunction with electrical stimulation of the tibialis anterior muscle, strengthens the connection at the NMJ in a Hebbian manner. Supporting this, paired stimulation of the efferent nerve and tibialis anterior generated an increase in flexion duration and augmented the evoked electrical response without input from the spinal cord. Evidence is presented that glutamatergic signaling contributes to plasticity at the NMJ. Labeling for vesicular glutamate transporter is evident at the motor endplate. Intramuscular application of an NMDAR antagonist blocked the acquisition/maintenance of the learned response and the strengthening of the evoked electrical response.SIGNIFICANCE STATEMENTThe neuromuscular junction (NMJ) is designed to faithfully elicit a muscular contraction in response to neural input. From this perspective, encoding environmental relations (learning) and the maintenance of a behavioral modification over time (memory) are assumed to reflect only modifications upstream from the NMJ, within the CNS. The current results challenge this view. Rats were trained to maintain a hind leg in a flexed position to avoid noxious stimulation. As expected, treatments that inhibit activity within the CNS, or disrupt peripheral communication, prevented learning. These manipulations did not affect the maintenance of the acquired response. The results imply that a peripheral modification at the NMJ contributes to the maintenance of the learned response.
Women's experience of psychological birth trauma in China: a qualitative study
Authors: Zhang Ke , Dai Ling , Wu Meiliyang , Zeng Tieying , Yuan Mengmei , Chen Ye 
Published: October 2020

Abstract
Background: The psychological birth trauma is a universal phenomenon in childbearing women. The influences could extend in a wide range, which includes the mothers' health, mother-infant relationship, partner relationship. The medical staff could even choose to quit playing their part in the birthing process. The phenomenon has gradually garnered attention around the world. However, it has rarely been discussed under Chinese special conditions. The study was to explore Chinese women's lived experiences of psychological birth trauma during labor and birth.Methods: A descriptive phenomenological approach was adopted in this study. Twenty-four women were recruited, who reported having experienced psychological birth trauma. In-depth interviews were conducted within one week after birth. Colaizzi's method was used to analyze the data.Results: Twenty-four women participated in the study. Four themes emerged to describe the women's experience of psychological birth trauma: "How am I supposed to relieve the endless pain?" " Can't I be weak?" "Am I not important?" " What uncertainties are waiting for me?"Conclusions: The findings provide deep insight into Chinese women's unique experience of psychological birth trauma. The social and health system could prevent psychological harm during birth and promote maternal health by measures of pain management, thoughtful attention, adequate caring, and prenatal preparation.
Characteristics of HIV-1 molecular transmission networks and drug resistance among men who have sex with men in Tianjin, China (2014-2018)
Authors: Zheng Minna , Yu Maohe , Chen Shaohui , Zhou Ning , Ning Tielin , Li Long , Zhao Fangning , Zhao Xuan , Zhu Jingjin , Jiang Guohong 
Published: October 2020

Abstract
Background In Tianjin, China, there is a relatively high prevalence of HIV in men who have sex with men (MSM). The number of HIV cases in Tianjin is also increasing. We investigated the HIV molecular transmission network, genetic tropisms, and drug resistance mutations in Tianjin. Methods Blood samples were collected from 510 newly diagnosed antiretroviral therapy (ART)-naïve HIV-1-infected subjects among MSM in Tianjin. Partial pol and env genes were sequenced and used for phylogenetic, genetic tropism, and genotypic drug resistance analyses. Molecular clusters were identified with 1.5% genetic distance and 90% bootstrap support.Results Among the 436 HIV-1 pol sequences obtained from the study participants, various genotypes were identified, including CRF01_AE (56.9%), CRF07_BC (27.8%), B (7.3%), CRF55_01B (4.1%), unique recombinant forms (URFs) (3.7%), and CRF59_01B (0.2%). A higher prevalence of X4 viruses was observed in individuals infected with CRF55_01B (56.3%) and CRF01_AE (46.2%) than with other subtypes. Of all 110 sequences in the 36 clusters, 62 (56.4%) were observed in 23 CRF01_AE clusters and 18 (16.4%) in four CRF07_BC clusters. Eight sequences clustered with at least one other shared the same drug resistance mutation (DRM). In different cluster sizes, the distributions of individuals by age, presence of sexually transmitted disease, and presence of DRMs, were significantly different. Conclusion We revealed the characteristics of HIV molecular transmission, tropism, and DRMs of ART-naïve HIV-infected individuals among the MSM population in Tianjin. Identifying infected persons at risk of transmission is necessary for proposing counseling and treating these patients to reduce the risk of HIV transmission.
A genome-wide screening for RNAi pathway proteins in Acari
Authors: Nganso Beatrice T , Sela Noa , Soroker Victoria 
Published: October 2020

Abstract
Background: RNA interference (RNAi) is a highly conserved, sequence-specific gene silencing mechanism present in Eukaryotes. Three RNAi pathways are known, namely micro-RNA (miRNA), piwi-interacting RNA (piRNA) and short interfering RNA (siRNA). However, little knowledge exists about the proteins involved in these pathways in Acari. Moreover, variable successes has been obtained in gene knockdown via siRNA pathway in their functional genomics and management. We hypothesized that the clue may be in the variability of the composition and the efficacy of siRNA machinery among Acari.Results: Both comparative genomic analyses and domain annotation suggest that all the analyzed species have homologs of putative core proteins that mediate cleaving of targeted genes via the three RNAi pathways. We identified putative homologs of Caenorhabditis elegans RNA-dependent RNA polymerase (RdRP) protein in all species though no secondary Argonaute homologs that operate with this protein in siRNA amplification mechanism were found, suggesting that the siRNA amplification mechanism present in Acari may be distinct from that described in C. elegans. Moreover, the genomes of these species do not encode homologs of C. elegans systemic RNAi defective-1 (Sid-1) protein that mediate silencing of the mRNA target throughout the treated organisms suggesting that the phenomena of systemic RNAi that has been reported in some Acari species probably occur through a different mechanism. However, homologs of putative RNAi spreading defective-3 (Rsd-3) protein and scavenger receptors namely Eater and SR-CI that mediate endocytosis cellular update of dsRNA in C. elegans and Drosophila melanogaster were found in Acari genomes. This result suggests that cellular dsRNA uptake in Acari is endocytosis-dependent. Detailed phylogenetic analyses of core RNAi pathway proteins in the studied species revealed that their evolution is compatible with the proposed monophyletic evolution of this group.Conclusions: Our analyses have revealed the potential activity of all three pathways in Acari. Still, much experimental work remains to be done to confirm the mechanisms behind these pathways in particular those that govern systemic/parental RNAi and siRNA amplification in Acari. Disclosure of these mechanisms will facilitate the development of new and specific management tools for the harmful species and enrichment of the beneficial species.
Upfront brain radiotherapy improves intracranial progression-free survival but not overall survival in lung adenocarcinoma patients with brain metastases: a retrospective, single-institutional analysis from China
Authors: Jiang Aijun , Ni Meng , Li Li , Zhao Fen , Yao Yuanhu , Ding Xin , Yu Qingxi , Zhang Longzhen , Yuan Shuanghu 
Published: October 2020

Abstract
Aims: The optimal timing of brain radiotherapy (BRT) for lung adenocarcinoma patients with brain metastases (BM) remains controversial. In this retrospective study, we performed a retrospective review to investigate the differential benefit of upfront versus deferred BRT for lung adenocarcinoma patients with BM.Methods: A total of 354 lung adenocarcinoma patients with BM treated in the Affiliated Cancer Hospital of Shandong University met the inclusion criteria for the study. Patients were divided into two groups: upfront BRT and deferred BRT. Intracranial progression-free survival (iPFS) and overall survival (OS) were measured from the date of brain metastases. Subgroup analyses according to gene mutation status were also performed.Results: Among the entire cohort, the median iPFS with upfront BRT (16.3 months) was longer than that with deferred BRT (11.3 months, p=0.001). However, the median OS did not differ significantly between patients who received upfront BRT and deferred BRT (27.6 and 31.5 months, respectively, p=0.813). Subgroup analyses indicated that upfront BRT yielded a significantly longer iPFS than deferred BRT (p=0.003) only for patients without EGFR gene mutation. In all subgroups, the median OS showed no significant difference between upfront BRT and deferred BRT.Conclusion: This single-institutional retrospective study showed that in patients with lung adenocarcinoma and BM, upfront BRT was associated with a significantly longer iPFS but no improvement in OS compared with deferred BRT. Considering the neurocognitive toxicities of BRT previously reported in the literature, deferred BRT might be considered as an acceptable therapeutic option for the treatment of patients with lung adenocarcinoma and BM.
Pediatric Tuina for the Treatment of Attention Deficit Hyperactivity Disorder (ADHD) Symptoms in Preschool Children: Study Protocol for a Pilot Randomized Controlled Trial
Authors: Chen Shu Cheng , Yu Juan , Suen Lorna Kwai-Ping , Sun Yan , Pang Ya Zheng , Wang Dong Dong , Zhao Wen Xia , Yeung Jerry Wing Fai 
Published: October 2020

Abstract
Background: Medication and behavior therapy are the conventional treatments for attention deficit hyperactivity disorder (ADHD), but they have limitations for preschool children. Evidence suggests that pediatric tuina, which is a modality of traditional Chinese medicine, might have beneficial effects on this condition.Objective: To assess the feasibility of conducting an RCT in terms of recruitment, use and acceptability of the parent-administered pediatric tuina for ADHD symptoms in preschoolers.Methods: It is a single-center, two-arm, parallel, open-label, pilot randomized controlled trial (RCT). Sixty children with pre-specified ADHD symptoms (hyperactivity, anxiety, and sleep disturbance) together with one of their parents will be recruited and randomized into two groups at a 1: 1 ratio. Parents in the parent-administered tuina group (intervention group, n=30) will attend an online training program to learn pediatric tuina skills for ADHD symptoms and conduct this treatment on their children at home. Parents in the parent-child interaction group (comparison group, n=30) will attend an online training about progressive muscle relaxation exercise and do this exercise with their children at home. Additional teaching materials will be provided to the participants in both groups. Both interventions should be carried out every other day during a 2-month treatment period, with each time around 20 minutes. Assessment will be performed at baseline, week4, and week 8. The primary outcome measure is the Swanson, Nolan and Pelham Parent Scale; the secondary outcomes include Preschool Anxiety Scale, Children's Sleep Habits Questionnaire, and Parental Stress Scale. A process evaluation embedded within the outcome evaluation will be performed. Differences in the scale scores and test parameters between groups will be examined using a linear mixed-effects model. Qualitative data will be analyzed using thematic content analysis, facilitated by QSR NVivo.Discussion: This study will provide evidence on the acceptability and feasibility of pediatric tuina for ADHD in preschool children. The process evaluation will help to better understand the facilitators and barriers of the intervention functioning.Trial registration: The study was registered at ClinicalTrials.gov (Identifier: NCT04237259) on 14 February 2020.Protocol version: 2, date June 23, 2020
Regional binding of tau and amyloid PET tracers in Down Syndrome autopsy brain tissue
Authors: Lemoine Laetitia , Ledreux Aurelie , Mufson Elliott J , Perez Sylvia E , Simic Goran , Doran Eric , Lott Ira , Carroll Steven , Bharani Krishna , Thomas Sarah , Gilmore Anah , Hamlett Eric D , Nordberg Agneta , Granholm Ann-Charlotte 
Published: October 2020

Abstract
INTRODUCTION: Tau pathology is a major age-related event in Down syndrome with Alzheimer’s disease (DS-AD). Although recently, several different Tau PET tracers have been developed as biomarkers for AD, these tracers showed different binding properties in Alzheimer disease and other non-AD tauopathies. They have not been yet investigated in tissue obtained postmortem for DS-AD cases. Here, we evaluated the binding characteristics of two Tau PET tracers (3H-MK6240 and 3H-THK5117) and one amyloid (3H-PiB) ligand in the medial frontal gyrus (MFG) and hippocampus (HIPP) in tissue from adults with DS-AD and DS cases with mild cognitive impairment (MCI) compared to sporadic AD. METHODS: Tau and amyloid autoradiography were performed on paraffin-embedded sections. To confirm respective ligand targets, adjacent sections were immunoreacted for phospho-Tau (AT8) and stained for amyloid staining using Amylo-Glo. RESULTS: The two Tau tracers showed a significant correlation with each other and with AT8, suggesting that both tracers were binding to Tau deposits. 3H-MK6240 Tau binding correlated with AT8 immunostaining but to a lesser degree than the 3H-THK5117 tracer, suggesting differences in binding sites between the two Tau tracers. 3H-THK5117, 3H-MK6240 and 3H-PIB displayed dense laminar binding in the HIPP and MFG in adult DS brains. A regional difference in Tau binding between adult DS and AD was observed suggesting differential regional Tau deposition in adult DS compared to AD, with higher THK binding density in the MFG in adult with DS compared to AD. No significant correlation was found between 3H-PiB and Amylo-Glo staining in adult DS brains suggesting that the amyloid PIB tracer binds to additional sites. CONCLUSIONS: This study provides new insights into the regional binding distribution of a first-generation and a second-generation Tau tracer in limbic and neocortical regions in adults with DS, as well as regional differences in Tau binding in adult with DS vs. those with AD. These findings provide new information about the binding properties of two Tau radiotracers for the detection of Tau pathology in adults with DS in vivo and provide valuable data regarding Tau vs. amyloid binding in adult DS compared to AD.
Extraction and quality evaluation of exosomes from joint effusion
Authors: Ruan Anmin , Yin Yueshan , Chen Pu , Zhou Jun , Zhang Xiaozhe , Ma Yufeng , Wang Qingfu 
Published: October 2020

Abstract
Objective: The aim of this study was to compare the quality and efficiency of exosomes extracted from knee joint effusion by different methods, laying a foundation for further research on exosomes from knee joint effusion. Methods:To separate and extract joint exosomes by 8% polyethylene glycol (PEG) precipitation method, ultracentrifugation method (UC) and ultrafiltration with exclusion chromatography (SECF). Transmission electron microscopy (TEM) and nanoparticle tracing technology (NTA) were used to detect particle morphology and particle size, and Western Blot (WB) was used to detect marker proteins of granule surface (CD9, CD63, Flotillin-1 and calnexin).Results: Three methods separated vesicle-like round particles from joint effusion successfully. The results of TEM show that the particles obtained by the three extraction methods are round or oval vesicles, the plasma membrane is intact, the size is different, and the diameter is distributed between 30 and 150 nm. Compared with SECF group, PEG group had more background particle impurities. and the broken vesicle fragments can be seen in the UC group; The results of NTA show that the main peaks of the three groups of particles are between 100-120nm, and the particle concentration is greater than 1×1010/ml; The results of WB show that the protein expressions of CD9, CD63 and Flotillin-1 in the suspension extracted by the three methods were higher, the expression of calnexin protein in the PEG group was higher than the UC group and SECF group.Conclusion: The three extraction methods can extract the exosomes of joint effusion successfully. The quality of exosomes obtained by the SECF method is relatively high, while the PEG precipitation method contains a small amount of impurity particles. UC method does not guarantee the integrity of exosomes. In summary, we recommend the SECF method to extract and isolate joint effusion exudates-derived exosomes when further studying the role of exosomes in the pathogenesis of knee osteoarthritis.
Favorable short-term oncologic outcomes following laparoscopic surgery for small T4 colon cancer : a multicenter comparative study
Authors: Park Sung Sil , Lee Joon Sang , Park Hyoung-Chul , Park Sung Chan , Sohn Dae Kyung , Oh Jae Hwan , Han Kyung Su , Lee Dong-Won , Lee Dong-Eun , Kang Sung-Bum , Park Kyu Joo , Jeong Seung‑Yong 
Published: October 2020

Abstract
Background: Laparoscopic surgery for T4 colon cancer may be safe in selected patients. We hypothesized that small tumor size might preoperatively predict a good laparoscopic surgery outcome. Herein we compared the clinicopathologic and oncologic outcomes of laparoscopic and open surgery in small T4 colon cancer. Methods: In a retrospective multicenter study, we reviewed the data of 449 patients, including 117 patients with tumors ≤ 4.0 cm who underwent surgery for T4 colon cancer between January 2014 and December 2017. We compared the clinicopathologic and 3-year oncologic outcomes between the laparoscopic and open groups. Survival curves were estimated using the Kaplan–Meier method and compared using the log-rank test. Univariate and multivariate analyses were performed using the Cox proportional hazards model . A p < 0.05 was considered statistically significant. Results: Blood loss, length of hospital stay, and postoperative morbidity were lower in the laparoscopic group than in the open group (median [range]: 50 [0–700] vs. 100 [0–4000] mL, p < 0.001; 8 vs. 10 days, p < 0.001; and 18.0 vs. 29.5%, p = 0.005, respectively). There were no intergroup differences in 3-year overall survival or disease-free survival (86.6 vs. 83.2%, p = 0.180 and 71.7 vs. 75.1%, p = 0.720, respectively). Among patients with tumor size ≤4.0 cm, blood loss was significantly lower in the laparoscopic group than in the open group (median [range]: 50 [0–530] vs. 50 [0–1000] mL, p = 0.003). Despite no statistical difference observed in the 3-year overall survival rate (83.3 vs. 78.7%, p = 0.538), the laparoscopic group had a significantly higher 3-year disease-free survival rate (79.2 vs. 53.2%, p = 0.012). Conclusions: Laparoscopic surgery showed similar outcomes to open surgery in T4 colon cancer patients , and may have favorable short-term oncologic outcomes in patients with tumors ≤4.0 cm.
All-arthroscopic repair of Atzei class II and III triangular fibrocartilage complex tears using the FasT-Fix suture device
Authors: Tsai Mengchun , Lin Yi-Hsuan , Chiu Chih-Hao , Cheng Chun-Ying , Chan Yi-Sheng , Chen Alvin Chao-Yu 
Published: October 2020

Abstract
Background The study is aimed to propose an arthroscopic repair technique using a pre-tied suture device for peripheral TFCC (triangular fibrocartilage complex) tear with proximal component involvement. Methods Through a retrospective review in the medical records of patients who underwent unilateral arthroscopic repair for TFCC Palmer IB lesion between 2017 and 2019, 12 patients were arthroscopically diagnosed as proximal component tear and received more than one year follow-up postoperatively. The arthroscope was introduced from 6R portal to discriminate Atzei class II from III lesions by a “visualization test”, and to supervise the repair procedure using pre-tied FasT-Fix suture device from 3-4 portal. Two poly-ether-ether-ketone (PEEK) blocks were further advanced along the device needle to finally seat outside the ulnar joint capsule, followed by gradually tightening the pre-tied suture loop until the TFCC periphery was securely repositioned and held stably. Results Operation time averaged 87 minutes. Hook test and DRUJ arthroscopy confirmed proximal component tear in all 12 wrists.Four patients were diagnosed to be Atzei class II lesion as full thickness tear of distal component was arthroscopically identified from 6R portal while the other 8 exhibited partial thickness tear and were categorized as class III lesion. Follow-up averaged 15 months with a range of 12 to 24 months. Mayo modified wrist score improved from an average of 61.3 preoperatively to 90.4 at the latest visit. Conclusions A modified technique for diagnosis and all-arthroscopic repair in TFCC Atzei class II and III lesions using a pre-tied suture device is a feasible and safe option with promising results.
Nasopharyngeal Metastasis From Colorectal Cancer: A Case Report
Authors: Liu Ye-Huan , Lin Bei-Bei , Lv Shi-Xu 
Published: October 2020

Abstract
Background: Nasopharyngeal metastasis from colorectal cancer has never been reported in the past. Case presentation: In this paper, we establish a case report of a 79-year-old man suffering from adenocarcinoma of the rectum with distant metastases to the liver, lung, and nasopharynx. Over the past 7 years, he received radical surgery for rectal cancer (miles surgery), chemotherapy, hepatectomy, and pneumonectomy. Conclusions: We equally discuss the histopathological and clinical aspects associated with this condition.