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Xu Y, Wang Z, Qin Z, Yan S, Shi B. Effects of chitosan addition on growth performance, diarrhoea, anti-oxidative function and serum immune parameters of weaned piglets. S AFR J ANIM SCI 2018. [DOI: 10.4314/sajas.v48i1.16] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zhang J, Qin Z, Yao K. Pyridine “alligator-clip” as molecular negative differential resistor predicted by first-principles study. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.09.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Qin Z, Balimunkwe RM, Quan T. Age-related reduction of dermal fibroblast size upregulates multiple matrix metalloproteinases as observed in aged human skin in vivo. Br J Dermatol 2017; 177:1337-1348. [PMID: 28196296 DOI: 10.1111/bjd.15379] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Fragmentation of collagen fibrils, the major structure protein in skin, is a hallmark of dermal ageing. Matrix metalloproteinases (MMPs) are largely responsible for the fragmentation of collagen fibrils. OBJECTIVES To quantify gene expression of all 23 known mammalian MMPs in sun-protected young and aged human skin in vivo and to investigate the potential mechanism underlying age-related alteration of multiple MMPs. METHODS MMP mRNA expression levels and MMP activity in sun-protected young and aged human skin in vivo were determined by real-time reverse transcription polymerase chain reaction (RT-PCR) and in situ zymography, respectively. The relative contributions to elevated MMPs in epidermis and dermis were quantified by laser capture microdissection coupled real-time RT-PCR. Dermal fibroblast morphology and collagen fibril fragmentation in human skin in vivo were assessed by second-harmonic generation microscopy and atomic force microscopy, respectively. In vitro cell morphology was assessed by CellTracker® fluorescent dye (Molecular Probes, Eugene, OR, U.S.A.) and phalloidin staining. Protein levels were determined by ProteinSimple capillary electrophoresis immunoassay (ProteinSimple, Santa Clare, CA, U.S.A.). RESULTS Multiple MMPs are elevated in aged human skin dermis. Increased MMP activity and collagen fibril fragmentation were observed in aged skin dermis. As dermal fibroblasts are the major MMP-producing cells in the dermis, reduction of dermal fibroblast size, which is observed in aged human skin, contributes to the elevation of age-related multiple MMPs. Reduction of fibroblast size upregulates c-Jun/c-Fos and activates AP-1. CONCLUSIONS Combined actions of the wide variety of MMPs that are constitutively elevated in aged dermis may be involved in the progressive degradation of dermal collagen fibrils. Age-related elevations of multiple MMPs are likely to be a result of the reduction of fibroblast size via activation of AP-1.
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Yao Z, Qin Z, Lin P, Hong X, Wang L, Dai Y, Yao X. Case study of Allii Macrostemonis Bulbus: From chemical and metabolic profile to quality control by UPLC/Q-TOF-MS. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Meniawy T, Richardson G, Townsend A, Desai J, Gan H, Friedlander M, Horvath L, Jameson M, Sandhu S, Wu Z, Qin Z, Kang K, Markman B. Preliminary results from a subset of patients (pts) with advanced ovarian cancer (OC) in a dose-escalation/expansion study of BGB-A317, an anti-PD-1 monoclonal antibody (mAb). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx367.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Anderson K, Barback C, Qin Z, Hoh C, Vera D, Plaxe S, McHale M. Sentinel lymph node mapping using a novel fluorescent modification of the molecular imaging agent tilmanocept. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dai L, Lin Z, Qiao J, Chen Y, Flemington EK, Qin Z. Ribonucleotide reductase represents a novel therapeutic target in primary effusion lymphoma. Oncogene 2017; 36:5068-5074. [PMID: 28459467 PMCID: PMC5578886 DOI: 10.1038/onc.2017.122] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/16/2017] [Accepted: 03/24/2017] [Indexed: 12/15/2022]
Abstract
Primary effusion lymphoma (PEL) is a highly aggressive B-cell malignancy that is closely associated with one of oncogenic viruses infection, Kaposi's sarcoma-associated herpesvirus (KSHV). PEL prognosis is poor and patients barely survive more than 6 months even following active chemotherapy interventions. There is therefore an urgent need to discover more effective targets for PEL management. We recently found that the ribonucleotide reductase (RR) subunit M2 is potentially regulated by the key oncogenic HGF/c-MET pathway in PEL (Dai et al., Blood. 2015;126(26):2821-31). In the current study, we set to investigate the role of RR in PEL pathogenesis and to evaluate its potential as a therapeutic target. We report that the RR inhibitor 3-AP actively induces PEL cell cycle arrest through inhibiting the activity of the NF-κB pathway. Using a xenograft model, we found that 3-AP effectively suppresses PEL progression in immunodeficient mice. Transcriptome analysis of 3-AP treated PEL cell lines reveals altered cellular genes, most of whose roles in PEL have not yet been reported. Taken together, we propose that RR and its signaling pathway may serve as novel actionable targets for PEL management.
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Quan T, Qin Z, Voorhees J, Fisher G. 120 Novel mouse model of skin aging: Expression of CCN1 in dermal fibroblasts drives dermal aging and promotes skin cancer development. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Dong Y, Yang C, Wang Z, Qin Z, Cao J, Chen Y. The injury of serotonin on intestinal epithelium cell renewal of weaned diarrhoea mice. Eur J Histochem 2016; 60:2689. [PMID: 28076934 PMCID: PMC5381531 DOI: 10.4081/ejh.2016.2689] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 10/30/2016] [Accepted: 12/06/2016] [Indexed: 02/08/2023] Open
Abstract
Diarrhoea is a common cause of death in children and weaned animals. Recent research has found that serotonin (5-HT) in the gastrointestinal tract plays an important role in regulating growth and the maintenance of mucosa, which protect against diarrhoea. To determine the influence of 5-HT on intestinal epithelium cell renewal under weaned stress diarrhoea, a weaned-stress diarrhoea mouse model was established with senna infusion (15 mL/Kg) via intragastric administration and stress restraint (SR). Mice with an increase in 5-HT were induced by intraperitoneal injection with citalopram hydrobromide (CH, 10 mg/Kg). The results demonstrated that compared with the control animals, diarrhoea appeared in weaned stress mice and the 5-HT content in the small intestine was significantly increased (P<0.05). Further, the caspase-3 cells and cells undergoing apoptosis in the small intestine were significantly increased, but the VH (villus height), V/C (villus height /crypt depth), and PCNA-positive rate significantly decreased. Compared with the control animals, CH increased the intestinal 5-HT content, caspase-3 cells and cells undergoing apoptosis but decreased the VH and V/C. Compared with both control and weaned stress animals, weaned stress animals that were pre-treated with CH showed higher 5-HT concentrations, positive caspase-3 cells and cells undergoing apoptosis but lower VH, V/C and PCNA-positive rate. In vitro, a low concentration of 5-HT inhibit, IEC-6 cell line apoptosis but a higher concentration of 5-HT promoted it. Therefore, weaned stress diarrhoea mice were accompanied by a 5-HT increase in the small intestine and vice versa, and the increase in 5-HT induced by CH caused diarrhoea. In brief, 5-HT and diarrhoea slowed the intestinal epithelium cell renewal and injured the abortion function and mucosal barrier by decreasing VH, V/C and proliferation and increasing epithelium cell apoptosis.
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Eichler R, Asai M, Brand H, Chiera N, Di Nitto A, Dressler R, Düllmann C, Even J, Fangli F, Goetz M, Haba H, Hartmann W, Jäger E, Kaji D, Kanaya J, Kaneya Y, Khuyagbaatar J, Kindler B, Komori Y, Kraus B, Kratz J, Krier J, Kudou Y, Kurz N, Miyashita S, Morimoto K, Morita K, Murakami M, Nagame Y, Ooe K, Piguet D, Sato N, Sato T, Steiner J, Steinegger P, Sumita T, Takeyama M, Tanaka K, Tomitsuka T, Toyoshima A, Tsukada K, Türler A, Usoltsev I, Wakabayashi Y, Wang Y, Wiehl N, Wittwer Y, Yakushev A, Yamaki S, Yano S, Yamaki S, Qin Z. Complex chemistry with complex compounds. EPJ WEB OF CONFERENCES 2016. [DOI: 10.1051/epjconf/201613107005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Huang H, Shen H, Qin Z, Jiang DD, Han JL, Wang L, Wang W. [The analysis of pattern visual evoked potential in obstructive sleep apnea syndrome]. ZHONGHUA JIE HE HE HU XI ZA ZHI = ZHONGHUA JIEHE HE HUXI ZAZHI = CHINESE JOURNAL OF TUBERCULOSIS AND RESPIRATORY DISEASES 2016; 39:709-13. [PMID: 27600421 DOI: 10.3760/cma.j.issn.1001-0939.2016.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To objectively evaluate visual function by pattern visual evoked potential (PVEP) and its related factors in patients with obstructive sleep apnea syndrome (OSAS)without any ocular symptoms. METHODS Eighty-three newly diagnosed OSAS and 18 normal subjects were enrolled in the study. The OSAS patients were divided into mild (n=11), moderate(n=17) and severe (n=55) groups based on the apnea-hypopnea index(AHI). Before the polysomnography(PSG) test, all participants underwent a PVEP examination measuring the latency and amplitude of P100. RESULTS Compared to healthy controls, the latency of P100 was significantly increased in OSAS patients [controls group: 97(95-100) ms, mild OSAS group: 101(98-103) ms, moderate OSAS group: 101(98-105) ms, severe OSAS group: 105(101-108) ms, all P<0.05], and the amplitude of P100 was significantly reduced [controls group: 9(8-10) μV, mild OSAS group: 7(5-8) μV, moderate OSAS group: 6(5-7) μV, severe OSAS group: 6(4-7) μV, all P<0.05]. The severe group showed significantly longer latency of P100 when compared with mild and moderate groups(P<0.05). In the OSAS patients, univariate analysis showed that, the latency of P100 was correlated with ODI, T90, AHI, sleep efficiency, minimum SaO2, and mean SaO2, and the amplitude of P100 was statistically associated with sleep efficiency .But the stepwise multiple linear regression analysis revealed that only AHI was significantly correlated with the latency of P100 (r=0.275, P<0.01). CONCLUSION Abnormal PVEP was found in patients with OSAS without any clinical manifestations of the optic neuropathy. The dysfunction of optic nerve was significantly associated with AHI and sleep efficiency.
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Han JL, Wang W, Jiang ZS, Kong DL, Shen H, Qin Z, Wang L, Huang H, Jiang DD, Kang J. [The expression of serum endoplasmic reticulum stress protein-78 in obstructive sleep apnea patients]. ZHONGHUA NEI KE ZA ZHI 2016; 55:298-301. [PMID: 27030619 DOI: 10.3760/cma.j.issn.0578-1426.2016.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE This study aimed to detect serum level of glucose regulated protein 78(GRP78) in patients with obstructive sleep apnea(OSA) and explore the relationship between endoplasmic reticulum stress and the pathophysiology of OSA. METHODS A total of 91 patients with OSA were enrolled in this study, including 30 mild, 28 moderate and 33 severe. The other 27 obese subjects were of age, gender and BMI matched group. Eleven moderate or severe OSA patients were administrated with continuous positive airway pressure (CPAP) treatment for 24 hours. Polysomnography, apnea hypopnea index (AHI), lowest arterial oxygen saturation(SaO2) and percentage of time spent at SaO2 below 90% (SIT90) were measured before and after sleep. Serum GRP78 was measured by ELISA. RESULTS The expression of GRP78 in mild(3.42±0.97)μg/L, moderate(2.67±1.14)μg/L and severe(2.62±1.11)μg/L OSA groups was significantly higher than in control group(1.75±0.41)μg/L (P<0.05). The GRP78 level in mild OSA group was significantly higher than either moderate or severe OSA group (P<0.05). After 24 h treatment of CPAP, serum GRP78 level decreased significantly [(1.77±0.39)μg/L vs(2.84±0.39)μg/L; P<0.05]. CONCLUSIONS Endoplasmic reticulum stress involves in the pathophysiology of patients with OSA. Higher GRP78 level in mild OSA patients suggests that endoplasmic reticulum related protein GRP 78 might rise then fall during exacerbation of OSA.
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Qin Z, Zeng Z. Anaphylaxis to chlorhexidine in a chlorhexidine-coated central venous catheter during general anaesthesia. Anaesth Intensive Care 2016; 44:297-298. [PMID: 27029667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Qin Z, Li X, Cai X, Li J, Zhu H, Ma Y, Wu S, Liu D, Li X. Periostin: a novel biomarker for chronic rhinosinusitis. B-ENT 2016; 12:305-313. [PMID: 29709135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023] Open
Abstract
UNLABELLED Periostin: a novel biomarker for chronic rhinosinusitis. OBJECTIVES Rhinosinusitis is characterized by inflammation of the sinuses, resulting in particular symptoms. This study aims to investigate the feasibility of periostin as a biomarker for chronic rhinosinusitis. METHODOLOGY The mucosal tissues of the ethmoid sinus were sampled from 12 patients with chronic rhinosinusitis without nasal polyps (CRsNP) and 25 with chronic rhinosinusitis with nasal polyps (CRwNP). Inferior turbinate biopsy was performed in 15 patients with a deviation of the nasal septum (DNS). Immunohistochemical (IHC) staining was performed to assess the distribution of periostin. Quantitative reverse transcription-polymerase chain reaction (RT-PCR) was conducted to detect the expression of periostin mRNA in nasal tissue specimens. The serum concentration of periostin was measured using enzyme-linked immunosorbent assay (ELISA). Correlation analysis among periostin mRNA in nasal mucosa, IHC staining score of periostin, serum concentration of periostin and proportion of blood eosinophils was performed. RESULTS The serum concentration of periostin and the IHC staining score of nasal mucosa from CRSsNP and CRSwNP patients were significantly higher than those in DNS counterparts (both P <0.01). The levels of periostin mRNA in CRSsNP and CRSwNP patients were slightly increased, but did not significantly differ from that in the DNS group (both P >0.05). The IHC staining score and serum concentration of periostin were correlated with the proportion of eosinophils in blood (P<0.05 and P <0.0 1). CONCLUSION Periostin can be used as a novel biomarker for chronic rhinosinusitis, which provides a potential target for individualized therapy of chronic rhinosinusitis.
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Liu S, Li Y, Qin Z, Geng X, Bao L, Kaltenboeck L, Kucuktas H, Dunham R, Liu Z. High-density interspecific genetic linkage mapping provides insights into genomic incompatibility between channel catfish and blue catfish. Anim Genet 2015; 47:81-90. [PMID: 26537786 DOI: 10.1111/age.12372] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2015] [Indexed: 02/01/2023]
Abstract
Catfish is the leading aquaculture species in the United States. The interspecific hybrid catfish produced by mating female channel catfish with male blue catfish outperform both of their parent species in a number of traits. However, mass production of the hybrids has been difficult because of reproductive isolation. Investigations of genome structure and organization of the hybrids provide insights into the genetic basis for maintenance of species divergence in the face of gene flow, thereby helping develop strategies for introgression and efficient production of the hybrids for aquaculture. In this study, we constructed a high-density genetic linkage map using the hybrid catfish system with the catfish 250K SNP array. A total of 26,238 SNPs were mapped to 29 linkage groups, with 12,776 unique marker positions. The linkage map spans approximately 3240 cM with an average intermarker distance of 0.25 cM. A fraction of markers (986 of 12,776) exhibited significant deviation from the expected Mendelian ratio of segregation, and they were clustered in major genomic blocks across 15 LGs, most notably LG9 and LG15. The distorted markers exhibited significant bias for maternal alleles among the backcross progenies, suggesting strong selection against the blue catfish alleles. The clustering of distorted markers within genomic blocks should lend insights into speciation as marked by incompatibilities between the two species. Such findings should also have profound implications for understanding the genomic evolution of closely related species as well as the introgression of hybrid production programs in aquaculture.
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Ma J, Duan Y, Qin Z, Wang J, Liu W, Xu M, Zhou S, Cao X. Overexpression of αCaMKII impairs behavioral flexibility and NMDAR-dependent long-term depression in the medial prefrontal cortex. Neuroscience 2015; 310:528-40. [PMID: 26415772 DOI: 10.1016/j.neuroscience.2015.09.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 09/02/2015] [Accepted: 09/20/2015] [Indexed: 01/24/2023]
Abstract
The medial prefrontal cortex (mPFC) participates in the behavioral flexibility. As a major downstream molecule in the NMDA receptor signaling, alpha-Ca(2+)/calmodulin-dependent protein kinase II (αCaMKII) is crucial for hippocampal long-term potentiation (LTP) and hippocampus-related memory. However, the role of αCaMKII in mPFC-related behavioral flexibility and mPFC synaptic plasticity remains elusive. In the present study, using chemical-genetic approaches to temporally up-regulate αCaMKII activity, we found that αCaMKII-F89G transgenic mice exhibited impaired behavioral flexibility in Y-water maze arm reversal task. Notably, in vitro electrophysiological analysis showed normal basal synaptic transmission, LTP and depotentiation, but selectively impaired NMDAR-dependent long-term depression (LTD) in the mPFC of αCaMKII-F89G transgenic mice. In accordance with the deficit in NMDAR-dependent LTD, αCaMKII-F89G transgenic mice exhibited impaired AMPAR internalization during NMDAR-dependent chemical LTD expression in the mPFC. Furthermore, the above deficits in behavioral flexibility, NMDAR-dependent LTD and AMPAR internalization could all be reversed by 1-naphthylmethyl (NM)-PP1, a specific inhibitor of exogenous αCaMKII-F89G activity. Taken together, our results for the first time indicate that αCaMKII overexpression in the forebrain impairs behavioral flexibility and NMDAR-dependent LTD in the mPFC, and supports the notion that there is a close relationship between NMDAR-dependent LTD and behavioral flexibility.
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Wang Y, Qin Z, Shen S, Xiang N, Liu J, Lin X, Bai Z, Wu Z. A novel fibrinogenase from Agkistrodon acutus venom protects against LPS-induced endotoxemia via regulating NF-κB pathway. Immunopharmacol Immunotoxicol 2015; 37:413-20. [PMID: 26369367 DOI: 10.3109/08923973.2015.1059440] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Endotoxins including lipopolysaccharide (LPS) could cause endotoxemia which often results in excessive inflammation, organ dysfunction, sepsis, disseminated intravascular coagulation (DIC) or even death. Previously, a novel fibrinogenase (FII) showed protective effects on LPS-induced DIC via activating protein C and suppressing inflammatory cytokines. OBJECTIVE To evaluate whether FII has protective effect on LPS-induced endotoxemia in mice and learn about the role of NF-κB pathway in TNF-α producing process. METHODS BALB/C mice were intraperitoneally injected (i.p.) with (a) 30 mg/kg LPS, (b) LPS + 0.3 mg/kg FII, (c) LPS + 1.0 mg/kg FII, (d) LPS + 3.0 mg/kg FII or (e) saline. Both survival rate and organ function were tested, including alanine aminotransferase (ALT), blood urine nitrogen (BUN) and tissue section, and TNF-α was examined by ELISA. RAW 264.7 macrophage was administered with (a) LPS, (b) LPS + FII, (c) FII alone or (d) saline, and TNF-α and phosphorylation (P)-NF-κB (P65) were determined by Western blot. RESULTS The administration of LPS led to 65% mortality rate, a rise of serum TNF-α, BUN and ALT levels, and both liver and renal tissue damage were observed. While FII treatment significantly increased the survival rate of LPS-induced endotoxemia mice model, histopathology and protein analysis results also revealed that FII remarkably protected liver and renal from LPS damage as well as decreasing TNF-α level. In vitro, FII significantly decreased LPS-induced TNF-α production and the expression of P-NF-κB (P65). CONCLUSIONS Our findings suggested that FII had protective effect on LPS-induced endotoxemia and organ injuries by suppressing the activation of NF-κB which decreased TNF-α level.
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Dai L, Cao Y, Chen Y, Parsons C, Qin Z. P0157 Role of HERV-K NP9 protein transactivation in AIDS-related Kaposi’s sarcoma. Eur J Cancer 2015. [DOI: 10.1016/j.ejca.2015.06.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wei N, Wang Y, Wang X, He Z, Zhang M, Zhang X, Pan Y, Zhang J, Qin Z, Zhang K. The different effects of high-frequency stimulation of the nucleus accumbens shell and core on food consumption are possibly associated with different neural responses in the lateral hypothalamic area. Neuroscience 2015; 301:312-22. [PMID: 26071960 DOI: 10.1016/j.neuroscience.2015.06.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 05/31/2015] [Accepted: 06/03/2015] [Indexed: 11/16/2022]
Abstract
Obesity may result from dysfunction of the reward system, especially in the nucleus accumbens (Acb). Based on this hypothesis, many researchers have tested the effect of high-frequency stimulation (HFS) of the Acb shell (Acb-Sh) and/or core (Acb-Co) on ingestive behaviors, but few studies have explored the possible mechanisms involved in the differences between the Acb-Sh and Acb-Co. The present study tested effects of HFS of the Acb-Sh and Acb-Co on high-fat food (HFF) consumption in rats after 24h of food deprivation. Microdialysis and electrophysiological experiments were carried out in awake rats to explore potential mechanisms. The results showed that the Acb-Sh decreased HFF consumption after food deprivation both during and post-HFS. However, HFS of the Acb-Co did not induce similar changes in food consumption. HFS of the Acb-Sh (Sh-HFS) induced an increase in GABA level in the lateral hypothalamic area (LHA) during both phases, whereas HFS of the Acb-Co (Co-HFS) did not exhibit similar effects. The electrophysiological experiment showed that nearly all the LHA neurons were inhibited by Sh-HFS, and the mean firing rate decreased significantly both during and post-HFS. In contrast, the mean firing rate of the LHA neurons did not exhibit clear changes during Co-HFS, although some individual neurons appeared to exhibit responses to Co-HFS. Considering all the data, we postulated that Sh-HFS, rather than Co-HFS, might inhibit palatable food consumption after food deprivation by decreasing the reward value of that food, which suggested that it might also disturb the process of developing obesity. The mechanisms involved in the different effects of Sh-HFS and Co-HFS on food consumption may be associated with different neural responses in the LHA. The Acb-Sh has abundant GABAergic projections to the LHA, whereas the Acb-Co has few or no GABAergic innervations to the LHA. Thus, neural activity in the LHA exhibits different responses to Sh-HFS and Co-HFS.
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Zhou R, Liu B, Lin K, Wang R, Qin Z, Liao R, Qiu Y. ECMO support for right main bronchial disruption in multiple trauma patient with brain injury--a case report and literature review. Perfusion 2014; 30:403-6. [PMID: 25300436 DOI: 10.1177/0267659114554326] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Extracorporeal membrane oxygenation (ECMO) may offer life-saving treatment in severe pulmonary contusion or acute respiratory distress syndrome when conventional treatments have failed. However, because of the bleeding risk of systemic anticoagulation, ECMO should be performed only as a last resort in multiple trauma victims. Here, we report ECMO as a bridge for right main bronchus reconstruction and recovery of traumatic wet lung in a 31-year-old male multi-trauma patient with right main bronchial disruption, bilateral pulmonary contusion, cerebral contusion and long bone fracture. The patient was discharged without any obvious complication. ECMO support in a traumatic brain injured patient with severe hypoxemia caused by lung contusion and/or tracheal bronchus disruption is not an absolute contraindication.
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Even J, Yakushev A, Düllmann CE, Haba H, Asai M, Sato TK, Brand H, Di Nitto A, Eichler R, Fan FL, Hartmann W, Huang M, Jäger E, Kaji D, Kanaya J, Kaneya Y, Khuyagbaatar J, Kindler B, Kratz JV, Krier J, Kudou Y, Kurz N, Lommel B, Miyashita S, Morimoto K, Morita K, Murakami M, Nagame Y, Nitsche H, Ooe K, Qin Z, Schädel M, Steiner J, Sumita T, Takeyama M, Tanaka K, Toyoshima A, Tsukada K, Türler A, Usoltsev I, Wakabayashi Y, Wang Y, Wiehl N, Yamaki S. Nuclear chemistry. Synthesis and detection of a seaborgium carbonyl complex. Science 2014; 345:1491-3. [PMID: 25237098 DOI: 10.1126/science.1255720] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Experimental investigations of transactinoide elements provide benchmark results for chemical theory and probe the predictive power of trends in the periodic table. So far, in gas-phase chemical reactions, simple inorganic compounds with the transactinoide in its highest oxidation state have been synthesized. Single-atom production rates, short half-lives, and harsh experimental conditions limited the number of experimentally accessible compounds. We applied a gas-phase carbonylation technique previously tested on short-lived molybdenum (Mo) and tungsten (W) isotopes to the preparation of a carbonyl complex of seaborgium, the 106th element. The volatile seaborgium complex showed the same volatility and reactivity with a silicon dioxide surface as those of the hexacarbonyl complexes of the lighter homologs Mo and W. Comparison of the product's adsorption enthalpy with theoretical predictions and data for the lighter congeners supported a Sg(CO)6 formulation.
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Brannan T, Qin Z, MacRae A, Lvovsky AI. Generation and tomography of arbitrary optical qubits using transient collective atomic excitations. OPTICS LETTERS 2014; 39:5447-5450. [PMID: 26466294 DOI: 10.1364/ol.39.005447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrate the preparation of heralded Fock-basis qubits (a|0〉+b|1〉) from transient collective spin excitations in a hot atomic vapor. The preparation event is heralded by Raman-scattered photons in a four-wave mixing process seeded by a weak coherent optical excitation. The amplitude and phase of the seed field allow arbitrary control over the qubit coefficients. The qubit state is characterized using balanced homodyne tomography.
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Hosseini A, Baker J, Tokin C, Qin Z, Wallace A, Vera D. Dendritic Cell Receptor-Specific Binding Properties of [99mTc] -Cy7-Tilmanocept and its use as a Multi-reporter Probe in Tumor Margin Analysis. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Wang Y, Qin Z, Fan FL, Fan FY, Cao SW, Wu XL, Zhang X, Bai J, Yin XJ, Tian LL, Zhao L, Tian W, Li Z, Tan CM, Guo JS, Gäggeler H. Gas-phase chemistry of Mo, Ru, W, and Os metal carbonyl complexes. RADIOCHIM ACTA 2014. [DOI: 10.1515/ract-2014-2157] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Metal carbonyl complexes were used for studying the gas-phase chemical behavior of Mo, Ru, W and Os isotopes with an on-line low
temperature isothermal gas chromatography apparatus. Short-lived Mo and Ru isotopes were produced by a 252Cf spontaneous
fission source. Short-lived nuclides of W and Os were produced using the heavy ion reactions 19F +159Tb and
165Ho, respectively. Short-lived products were thermalized in a recoil chamber filled with a gas mixture of helium and
carbon monoxide. The carbonyls formed were then transported through capillaries to an isothermal chromatography column for study of the
adsorption behavior as a function of temperature. On-line isothermal chromatography (IC) experiments on Teflon (PTFE) and quartz
surfaces showed that short-lived isotopes of the listed elements can form carbonyl complexes which are very volatile and interact most
likely in physical sorption processes. Deduced adsorption enthalpies of Mo and Ru carbonyls were − 38 ± 2 kJ/mol and
− 36 ± 2 kJ/mol, respectively. These values are in good agreement with literature data, partly obtained with different
chromatographic techniques. A validation of the applied Monte Carlo model to deduce adsorption enthalpies with Mo isotopes of different
half-lives proved the validity of the underlying adsorption model. The investigations using a gas-jet system coupled to a heavy ion
accelerator without any preseparator clearly showed the limitations of the approach. The He and CO gas mixture, which was directly
added into the chamber, will result in decomposition of CO gas and produce some aerosol particles. After the experiment of
173W and 179Os in the heavy ion experiments, the Teflon column was covered by a yellowish deposit; the
adsorption enthalpy of W and Os carbonyls could therefore not be properly deduced using Monte Carlo simulations.
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Breitwieser R, Marsault M, Repain V, Lagoute J, Chacon C, Girard Y, Rousset S, Qin Z, Battaglini N, Zrig S, Lang P. Long-range ordered nanodomains of grafted electroactive molecules. J Chem Phys 2013; 139:204703. [PMID: 24289365 DOI: 10.1063/1.4830402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We demonstrate the capability to build zero and one-dimensional electroactive molecular nanostructures ordered over a macroscopic scale and stable under ambient conditions. To realize these arrays, we use the selective grafting of functionalized thiols (juglon and terthiophene based) on a self-organized metallic template. The nanoscale patterning of the molecular conductance is demonstrated and analyzed by scanning tunneling spectroscopy. Finally, the influence of the nanostructuring on electro-chemical properties is measured, paving the way to an all-bottom-up fabrication of nanostructured templates for nanosciences.
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