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https://www.readbyqxmd.com/read/29793095/sex-hormones-affect-acute-and-chronic-stress-responses-in-sexually-dimorphic-patterns-consequences-for-depression-models
#1
Lei Guo, Yi-Xi Chen, Yu-Ting Hu, Xue-Yan Wu, Yang He, Juan-Li Wu, Man-Li Huang, Matthew Mason, Ai-Min Bao
BACKGROUND: Alterations in peripheral sex hormones may play an important role in sex differences in terms of stress responses and mood disorders. It is not yet known whether and how stress-related brain systems and brain sex steroid levels fluctuate in relation to changes in peripheral sex hormone levels, or whether the different sexes show different patterns. We aimed to investigate systematically, in male and female rats, the effect of decreased circulating sex hormone levels following gonadectomy on acute and chronic stress responses, manifested as changes in plasma and hypothalamic sex steroids and hypothalamic stress-related molecules...
May 21, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29793087/skin-allografting-activates-anti-tumor-immunity-and-suppresses-growth-of-colon-cancer-in-mice
#2
Xiang Li, Xu Lan, Grace Wang, Yi Liu, Ke Zhao, Shan-Zheng Lu, Xiao-Xi Xu, Gang-Gang Shi, Kui Ye, Bao-Ren Zhang, Yi-Ming Zhao, Hong-Qiu Han, Cai-Gan Du, Thomas E Ichim, Hao Wang
INTRODUCTION: The tumor cells could escape from the immune elimination through the immunoediting mechanisms including the generation of immunosuppressive or immunoregulative cells. By contrast, allograft transplantation could activate the immune system and induce a strong allogenic response. The aim of this study was to investigate the efficacy of allogenic skin transplantation in the inhibition of tumor growth through the activation of allogenic immune response. METHODS: Full-thickness skin transplantation was performed from C57BL/6 (H-2b ) donors to BALB/c (H-2d ) recipients that were receiving subcutaneous injection of isogenic CT26 colon cancer cells (2 × 106 cells) at the same time...
May 21, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29792573/inherent-resistance-to-14%C3%AE-demethylation-inhibitor-fungicides-in-colletotrichum-truncatum-is-likely-linked-to-cyp51a-and-or-cyp51b-gene-variants
#3
Shuning Chen, Yunyun Wang, Guido Schnabel, Congyue Annie Peng, Satyanarayana Lagishetty, Kerry Smith, Chao-Xi Luo, Huizhu Yuan
Anthracnose disease, caused by Colletotrichum truncatum, affects marketable yield during preharvest production and postharvest storage of fruits and vegetables worldwide. Demethylation inhibitor fungicides (DMIs) are among the very few chemical classes of single-site mode of action fungicides that are effective in controlling anthracnose disease. However, some species are inherently resistant to DMIs and more information is needed to understand this phenomenon. Isolates of C. truncatum were collected from the USA and China from peach, soybean, citrus, and begonia and sensitivity to six DMIs (difenoconazole, propiconazole, metconazole, tebuconazole, flutriafol and fenbuconazole) was determined...
May 24, 2018: Phytopathology
https://www.readbyqxmd.com/read/29792376/somatic-ace-regulates-self-renewal-of-mouse-spermatogonial-stem-cells-via-the-mapk-signaling-pathway
#4
Tingting Gao, Xin Zhao, Chenchen Liu, Binbin Shao, Xi Zhang, Kai Li, Jinyang Cai, Su Wang, Xiaoyan Huang
Spermatogonial stem cell (SSC) self-renewal is an indispensable part of spermatogenesis. Angiotensin I-converting enzyme (ACE) is a zinc dipeptidyl carboxypeptidase that plays a critical role in regulation of the renin-angiotensin system. Here, we used RT-PCR and Western blot analysis to confirm that somatic ACE (sACE) but not testicular ACE (tACE) is highly expressed in mouse testis before postpartum day 7 and in cultured SSCs. Our results revealed that sACE is located on the membrane of SSCs. Treating cultured SSCs with the ACE competitive inhibitor captopril was found to inhibit sACE activity, and significantly reduced the proliferation rate of SSCs...
May 24, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29792334/chemical-constituents-from-dendrobium-hainanense
#5
You-Yuan Zhang, Pei Wang, Xi-Qiang Song, Wen-Jian Zuo, Hao Wang, Liang-Liang Chen, Wen-Li Mei, Hao-Fu Dai
A new phenolic derivative (1) and a new dihydrophenanthrene (2) were isolated from the aerial part of Dendrobium hainanense rofe, along with 12 known compounds. The structures of the new compounds were elucidated by spectroscopic analysis,and the relative configuration of compound 1 was determined by J-based configuration analysis (JBCA) method. Bioassay result indicated that compound 1 exhibited weak antibacterial activity against Canidia albicans and Ralstonia solanaceanum.
May 24, 2018: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/29792213/rate-of-presence-of-11-thoracic-vertebrae-and-6-lumbar-vertebrae-in-asymptomatic-chinese-adult-volunteers
#6
Ying-Zhao Yan, Qing-Ping Li, Cong-Cong Wu, Xiang-Xiang Pan, Zhen-Xuan Shao, Shao-Qing Chen, Ke Wang, Xi-Bang Chen, Xiang-Yang Wang
BACKGROUND: An increasing number of studies on spinal morphology in asymptomatic Asian and Western patients have been reported. Variation in spinal anatomy among patients is considered as the cause of wrong-level surgery in up to 40% of cases. The present study examined the rate of presence of 11 thoracic vertebrae and 6 lumbar vertebrae in 293 asymptomatic Chinese adult volunteers. METHODS: From May 27, 2016, to November 11, 2017, a cohort of 325 asymptomatic Chinese adults meeting the study exclusion criteria was recruited...
May 23, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29792187/carbonic-anhydrase-related-protein-expression-in-astrocytomas-and-oligodendroglial-tumors
#7
Sini L Karjalainen, Hannu K Haapasalo, Ashok Aspatwar, Harlan Barker, Seppo Parkkila, Joonas A Haapasalo
BACKGROUND: Carbonic anhydrase related proteins (CARPs) VIII, X and XI functionally differ from the other carbonic anhydrase (CA) enzymes. Structurally, they lack the zinc binding residues, which are important for enzyme activity of classical CAs. The distribution pattern of the CARPs in fetal brain implies their role in brain development. In the adult brain, CARPs are mainly expressed in the neuron bodies but only weaker reactivity has been found in the astrocytes and oligodendrocytes...
May 23, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29791486/involvement-of-the-renin-angiotensin-system-in-the-progression-of-severe-hand-foot-and-mouth-disease
#8
Chao Zhang, Shuaiyin Chen, Guangyuan Zhou, Yuefei Jin, Rongguang Zhang, Haiyan Yang, Yuanlin Xi, Jingchao Ren, Guangcai Duan
BACKGROUND: Hand-foot-and-mouth disease (HFMD) is generally considered as a mild exanthematous disease to infants and young children worldwide. HFMD cases are usually mild and self-limiting but for few cases leads to complicated severe clinical outcomes, and even death. Previous studies have indicated that serum Ang II levels in patients with H7N9 infection were related to the severity of infection. However, the mechanisms underlying the pathogenesis of severe HFMD remain unclear. This study was undertaken to clarify the role of the renin-angiotensin system (RAS) in the progression of severe HFMD...
2018: PloS One
https://www.readbyqxmd.com/read/29791135/optically-active-cdse-dot-cds-rod-nanocrystals-with-induced-chirality-and-circularly-polarized-luminescence
#9
Jiaji Cheng, Junjie Hao, Haochen Liu, Jiagen Li, Junzi Li, Xi Zhu, Xiaodong Lin, Kai Wang, Tingchao He
Ligand-induced chirality in semiconductor nanocrystals (NCs) has attracted attention because of the tunable optical properties of the NCs. Induced circular dichroism (CD) has been observed in CdX (X = S, Se, Te) NCs and their hybrids, but circularly polarized luminescence (CPL) in these fluorescent nanomaterials has been seldom reported. Herein, we describe the successful preparation of L- and D-cysteine-capped CdSe-dot/CdS-rods (DRs) with tunable CD and CPL behaviors and a maximum anisotropic factor (glum) of 4...
May 23, 2018: ACS Nano
https://www.readbyqxmd.com/read/29790665/long-noncoding-rna-ufc1-is-activated-by-e2f1-and-exerts-oncogenic-properties-by-functioning-as-a-cerna-of-foxp3
#10
Jie Xi, Jing Feng, Saitian Zeng, Ping Huang
Cervical cancer is one of the most common gynecologic cancers around the world. Long noncoding RNAs (lncRNAs) are considered to be important regulators of some biological processes. Recently, it has been reported that linc-UFC1 is a putative oncogene in some cancers. However, the functional roles of linc-UFC1 have not been investigated in cervical cancer. Here, it was demonstrated that linc-UFC1 expression was significantly increased in cervical cancer tissues, and its overexpression was associated with the poor survival of patients with cervical cancer...
May 23, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29789847/streamlined-chemoenzymatic-total-synthesis-of-prioritized-ganglioside-cancer-antigens
#11
Hai Yu, Abhishek Santra, Yanhong Li, John B McArthur, Tamashree Ghosh, Xiaoxiao Yang, Peng G Wang, Xi Chen
A highly efficient streamlined chemoenzymatic strategy for total synthesis of four prioritized ganglioside cancer antigens GD2, GD3, fucosyl GM1, and GM3 from commercially available lactose and phytosphingosine is demonstrated. Lactosyl sphingosine (LacβSph) was chemically synthesized (on a 13 g scale), subjected to sequential one-pot multienzyme (OPME) glycosylation reactions with facile C18-cartridge purification, followed by improved acylation conditions to form target gangliosides, including fucosyl GM1 which has never been synthesized before...
May 23, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29789833/zinc-catalyzed-reaction-of-isoxazoles-with-thioynol-ethers-involving-an-unprecedented-1-2-sulfur-migration
#12
Xin-Qi Zhu, Qing Sun, Zhi-Xin Zhang, Bo Zhou, Pei-Xi Xie, Wen-Bo Shen, Xin Lu, Jin-Mei Zhou, Long-Wu Ye
A novel zinc-catalyzed reaction of isoxazoles with thioynol ethers involving an unprecedented 1,2-sulfur migration has been developed, which represents the first example of a non-noble metal-catalyzed reaction between isoxazoles and alkynes. This method allows the facile and atom-economical synthesis of a range of valuable β-keto enamides. Moreover, the computational study provides further evidence for the feasibility of the proposed reaction mechanism.
May 23, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29789796/removal-of-nitrate-in-simulated-water-at-low-temperature-by-a-novel-psychrotrophic-and-aerobic-bacterium-pseudomonas-taiwanensis-strain-j
#13
Tengxia He, Qing Ye, Quan Sun, Xi Cai, Jiupai Ni, Zhenlun Li, Deti Xie
Low temperatures and high pH generally inhibit the biodenitrification. Thus, it is important to explore the psychrotrophic and alkali-resisting microorganism for degradation of nitrogen. This research was mainly focused on the identification of a psychrotrophic strain and preliminary explored its denitrification characteristics. The new strain J was isolated using the bromothymol blue solid medium and identified as Pseudomonas taiwanensis on the basis of morphology and phospholipid fatty acid as well as 16S rRNA gene sequence analyses, which is further testified to work efficiently for removing nitrate from wastewater at low temperature circumstances...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29789664/the-bet-bromodomain-inhibitor-apabetalone-induces-apoptosis-of-latent-hiv-1-reservoir-cells-following-viral-reactivation
#14
Xuan-Xuan Zhang, Jian Lin, Tai-Zhen Liang, Heng Duan, Xing-Hua Tan, Bao-Min Xi, Lin Li, Shu-Wen Liu
The persistence of latent HIV-1 reservoirs throughout combination antiretroviral therapy (cART) is a major barrier on the path to achieving a cure for AIDS. It has been shown that bromodomain and extra-terminal (BET) inhibitors could reactivate HIV-1 latency, but restrained from clinical application due to their toxicity and side effects. Thus, identifying a new type of BET inhibitor with high degrees of selectivity and safety is urgently needed. Apabetalone is a small-molecule selective BET inhibitor specific for second bromodomains, and has been evaluated in phase III clinical trials that enrolled patients with high-risk cardiovascular disorders, dyslipidemia, and low HDL cholesterol...
May 22, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29789589/characterization-of-different-bubble-formulations-for-blood-brain-barrier-opening-using-a-focused-ultrasound-system-with-acoustic-feedback-control
#15
Chenchen Bing, Yu Hong, Christopher Hernandez, Megan Rich, Bingbing Cheng, Imalka Munaweera, Debra Szczepanski, Yin Xi, Mark Bolding, Agata Exner, Rajiv Chopra
Focused ultrasound combined with bubble-based agents serves as a non-invasive way to open the blood-brain barrier (BBB). Passive acoustic detection was well studied recently to monitor the acoustic emissions induced by the bubbles under ultrasound energy, but the ability to perform reliable BBB opening with a real-time feedback control algorithm has not been fully evaluated. This study focuses on characterizing the acoustic emissions of different types of bubbles: Optison, Definity, and a custom-made nanobubble...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29788530/need-for-long-term-care-in-children-is-increasingly-caused-by-disorders-of-psychological-development-changes-in-the-care-causing-diagnoses-according-to-german-social-code-sgb-xi-between-2009-2014
#16
Julia Christiane Beck-Ripp, Holger Dressel
AIM OF THE STUDY: There is an ongoing discussion on the increasing number of children with mental and developmental disorders, with some even needing long-term care according to the German Social Code XI. This study was performed to identify the main diagnoses justifying such care in children and to analyse their prevalence over time. METHODS: The diagnoses justifying long-term care were evaluated using care assessments of Bavarian children and adolescents between 2009 to 2014 by the medical service of statutory health insurance...
May 22, 2018: Das Gesundheitswesen
https://www.readbyqxmd.com/read/29788281/a-method-for-cranial-nerve-xi-silencing-during-surgery-of-the-foramen-magnum-region-technical-case-report
#17
Derek G Southwell, Jonathan D Breshears, William R Lyon, Michael W McDermott
BACKGROUND AND IMPORTANCE: Skull base surgery involves the microdissection and intraoperative monitoring of cranial nerves, including cranial nerve XI (CN XI). Manipulation of CN XI can evoke brisk trapezius contraction, which in turn may disturb the surgical procedure and risk patient safety. Here we describe a method for temporarily silencing CN XI via direct intraoperative application of 1% lidocaine. CLINICAL PRESENTATION: A 41-yr-old woman presented with symptoms of elevated intracranial pressure and obstructive hydrocephalus secondary to a hemangioblastoma of the right cerebellar tonsil...
May 18, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29788096/pnaktide-ameliorates-renal-interstitial-fibrosis-through-inhibition-of-sodium-potassium-adenosine-triphosphatase-mediated-signaling-pathways-in-unilateral-ureteral-obstruction-mice
#18
Xi Cheng, Yi Song, Yu Wang
Background: Sodium-potassium adenosine triphosphatase (Na/K-ATPase) has been shown to regulate Src activity by combining with Src to keep it in an inactive form. We previously reported that Na/K-ATPase was downregulated in unilateral ureteral obstruction (UUO) animals. In this study, we examined whether inhibition of Na/K-ATPase-mediated Src signaling pathways ameliorated renal interstitial fibrosis induced by UUO. Methods: UUO was performed on male C57BL/6J mice...
May 17, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29788053/reversing-ongoing-chronic-intestinal-inflammation-and-fibrosis-by-sustained-block-of-il-12-and-il-23-using-a-vaccine-in-mice
#19
Qingdong Guan, Carolyn R Weiss, Shuhe Wang, Gefei Qing, Xi Yang, Richard J Warrington, Charles N Bernstein, Zhikang Peng
Interleukin (IL)-12 and IL-23 that share subunit p40 are important cytokines in the pathogenesis of inflammatory bowel disease. We reported that mouse p40 peptide-based vaccines ameliorated intestinal inflammation in the prevention of trinitrobenzene sulfonic acid (TNBS)-induced murine colitis model. Here, we evaluated whether administration of the vaccine after establishment of colitis would be effective in modifying both TNBS-induced and dextran sulfate sodium (DSS)-induced chronic colitis and the underlying immune mechanisms...
May 17, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29787993/systematic-screening-and-characterization-of-qi-li-qiang-xin-capsule-related-xenobiotics-in-rats-by-ultra-performance-liquid-chromatography-coupled-with-quadrupole-time-of-flight-tandem-mass-spectrometry
#20
Wei-Jing Yun, Zhi-Hong Yao, Cai-Lian Fan, Zi-Fei Qin, Xi-Yang Tang, Meng-Xue Gao, Yi Dai, Xin-Sheng Yao
Qi-Li-Qiang-Xin capsule (QLQX), a well-known traditional Chinese medicine prescription (TCMP), is consisted of eleven commonly used herbal medicines, has been widely used for the treatment of chronic heart failure (CHF). However, the absorbed components and related metabolites after oral administration of QLQX are still remaining unknown. In the present work, a reliable and effective method using ultra performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry (UPLC/Q-TOF-MS) was established to identify QLQX-related xenobiotics in rats...
May 12, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
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