526
|
Liu HW, Li K, Zhao JS, Deng W. Effects of chestnut tannins on intestinal morphology, barrier function, pro-inflammatory cytokine expression, microflora and antioxidant capacity in heat-stressed broilers. J Anim Physiol Anim Nutr (Berl) 2017; 102:717-726. [PMID: 29119618 DOI: 10.1111/jpn.12839] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 10/09/2017] [Indexed: 01/01/2023]
Abstract
A study was conducted to evaluate the effects of chestnut tannins (CT) on intestinal morphology, barrier function, pro-inflammatory cytokine expression, microflora and antioxidant capacity in heat-stressed broilers. Four hundred 28-day-old male Ross 308 broilers were randomly assigned into four groups, with 10 replicates per group and 10 broilers per replicate. The broilers in the normal (NOR) group were kept at 22 ± 1°C and fed the basal diet, and each of the other three groups were treated with cyclic heat (33 ± 1°C from 0800 to 1800 and 22 ± 1°C from 1800 to 0800) and fed the basal diet with 0 (HT), 1 (CT1) or 2 (CT2) g of CT/kg of diet. The experiment lasted for 14 days. Compared with the HT group, broilers in the NOR and CT2 groups had higher (p < .05) average daily gain and villus height in the jejunum and lower serum d-lactate (p < .001) and diamine oxidase (p < .01) levels. The addition of 2 g CT/kg of diet increased the total antioxidant capacity (p < .001) and superoxide dismutase activities (p < .05) and zonula occludens-1 mRNA expression level (p < .05) and decreased the malondialdehyde concentration (p < .01) and mRNA expression levels of interleukin-6 (p < .001) and nuclear factor kappa B (p < .001) in the jejunal mucosa of heat-stressed broilers. The populations of Escherichia coli and Clostridium in the jejunum (p < .01) and caecum (p < .05) of broilers in the HT group were higher than those in the NOR and CT2 groups. In conclusion, the addition of 2 g CT/kg of diet seemed to be a feasible means of alleviating the negative effects of heat stress on the growth performance and intestinal function of broilers.
Collapse
|
527
|
Yang H, Li J, Xiao Y, Gu Y, Liu H, Liang Y, Liu X, Hu J, Meng D, Yin H. An Integrated Insight into the Relationship between Soil Microbial Community and Tobacco Bacterial Wilt Disease. Front Microbiol 2017; 8:2179. [PMID: 29163453 PMCID: PMC5681905 DOI: 10.3389/fmicb.2017.02179] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 10/24/2017] [Indexed: 12/01/2022] Open
Abstract
The soil microbial communities play an important role in plant health, however, the relationship between the below-ground microbiome and above-ground plant health remains unclear. To reveal such a relationship, we analyzed soil microbial communities through sequencing of 16S rRNA gene amplicons from 15 different tobacco fields with different levels of wilt disease in the central south part of China. We found that plant health was related to the soil microbial diversity as plants may benefit from the diverse microbial communities. Also, those 15 fields were grouped into ‘healthy’ and ‘infected’ samples based upon soil microbial community composition analyses such as unweighted paired-group method with arithmetic means (UPGMA) and principle component analysis, and furthermore, molecular ecological network analysis indicated that some potential plant-beneficial microbial groups, e.g., Bacillus and Actinobacteria could act as network key taxa, thus reducing the chance of plant soil-borne pathogen invasion. In addition, we propose that a more complex soil ecology network may help suppress tobacco wilt, which was also consistent with highly diversity and composition with plant-beneficial microbial groups. This study provides new insights into our understanding the relationship between the soil microbiome and plant health.
Collapse
|
528
|
Chen C, Cui L, Chen Y, Zhang H, Liu P, Wu P, Qiu D, Zou J, Yang D, Yang L, Liu H, Zhou Y, Li H. Transcriptional responses of wheat and the cereal cyst nematode Heterodera avenae during their early contact stage. Sci Rep 2017; 7:14471. [PMID: 29101332 PMCID: PMC5670130 DOI: 10.1038/s41598-017-14047-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 10/04/2017] [Indexed: 01/22/2023] Open
Abstract
Cereal cyst nematode (Heterodera avenae) is attracted to and aggregated around wheat roots to initiate infection, but this interaction between wheat and the nematode is not fully understood. The transcriptional responses of both wheat and H. avenae were examined during their early contact stage by mRNA sequencing analysis; certain numbers of the differentially expressed genes (DEGs) were validated using quantitative real-time PCR. The immobile host wheat root only had 93 DEGs (27 up-regulated and 66 down-regulated), while the mobile plant parasitic nematode reacted much more actively with 879 DEGs (867 up-regulated and 12 down-regulated). Among them, a number of wheat DEGs (mostly down-regulated) were involved in biotic stress pathways, while several putative effector genes were up-regulated in the nematode DEGs. One putative chitinase-like effector gene of H. avenae was able to suppress BAX-triggered programmed cell death in Nicotiana benthamiana. Results of these experiments demonstrated that nematode responded more actively than wheat during the contact stage of parasitism. The parasite's responses mainly involved up-regulation of genes including at least one anti-plant-defence effector gene, whereas the host responses mainly involved down-regulation of certain defence-related genes.
Collapse
|
529
|
Liu H, Frank Cheng Y. Mechanism of microbiologically influenced corrosion of X52 pipeline steel in a wet soil containing sulfate-reduced bacteria. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.089] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
530
|
Han J, Liu C, Li L, Zhou H, Liu L, Bao L, Chen Q, Song F, Zhang L, Li E, Liu L, Pei Y, Jin C, Xue Y, Yin W, Ma Y, Liu H. Decalin-Containing Tetramic Acids and 4-Hydroxy-2-pyridones with Antimicrobial and Cytotoxic Activity from the Fungus Coniochaeta cephalothecoides Collected in Tibetan Plateau (Medog). J Org Chem 2017; 82:11474-11486. [DOI: 10.1021/acs.joc.7b02010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
531
|
Wei L, Karahan HE, Zhai S, Liu H, Chen X, Zhou Z, Lei Y, Liu Z, Chen Y. Amorphous Bimetallic Oxide-Graphene Hybrids as Bifunctional Oxygen Electrocatalysts for Rechargeable Zn-Air Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701410. [PMID: 28804931 DOI: 10.1002/adma.201701410] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 04/28/2017] [Indexed: 05/20/2023]
Abstract
Metal oxides of earth-abundant elements are promising electrocatalysts to overcome the sluggish oxygen evolution and oxygen reduction reaction (OER/ORR) in many electrochemical energy-conversion devices. However, it is difficult to control their catalytic activity precisely. Here, a general three-stage synthesis strategy is described to produce a family of hybrid materials comprising amorphous bimetallic oxide nanoparticles anchored on N-doped reduced graphene oxide with simultaneous control of nanoparticle elemental composition, size, and crystallinity. Amorphous Fe0.5 Co0.5 Ox is obtained from Prussian blue analog nanocrystals, showing excellent OER activity with a Tafel slope of 30.1 mV dec-1 and an overpotential of 257 mV for 10 mA cm-2 and superior ORR activity with a large limiting current density of -5.25 mA cm-2 at 0.6 V. A fabricated Zn-air battery delivers a specific capacity of 756 mA h gZn-1 (corresponding to an energy density of 904 W h kgZn-1 ), a peak power density of 86 mW cm-2 and can be cycled over 120 h at 10 mA cm-2 . Other two amorphous bimetallic, Ni0.4 Fe0.6 Ox and Ni0.33 Co0.67 Ox , are also produced to demonstrate the general applicability of this method for synthesizing binary metal oxides with controllable structures as electrocatalysts for energy conversion.
Collapse
|
532
|
Zhang C, Wang Y, Liu H, Hao A, Xun J, Meng Q. [Comparative study for effects of bare-handed CPR with Thumper cardiopulmonary resuscitator CPR in emergency department based on "the Utstein style"]. ZHONGHUA WEI ZHONG BING JI JIU YI XUE 2017; 29:937-939. [PMID: 29017657 DOI: 10.3760/cma.j.issn.2095-4352.2017.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To objectively and standardly compare the bare-handed CPR and Thumper cardiopulmonary resuscitation CPR recovery effect based on cardiopulmonary resuscitation (CPR) Utstein model. METHODS A retrospective study was conducted. CPR adult patients admitted to the Emergency Room of First Hospital of Qinhuangdao in Hebei Province from January 2015 to January 2017 were enrolled. Seventy patients who underwent CPR using the Thumper cardiopulmonary resuscitator were included in the Thumper CPR group; 80 patients who underwent manual hand-held CPR were included in the bare-handed CPR group. Return of spontaneous circulation (ROSC) and return of spontaneous breathing, and blood gas analysis indexes of recovery for 5 minutes and 15 minutes [arterial oxygen partial pressure (PaO2), arterial blood carbon dioxide partial pressure (PaCO2), arterial blood oxygen saturation (SaO2), blood lactic acid (Lac)] were collected. RESULTS There was no significant difference in gender, age and cardiac arrest (CA) causes between the two groups. Compared with the bare-handed CPR group, the ROSC rate in the Thumper CPR group was significantly increased [68.57% (48/70) vs. 51.25% (41/80), χ2 = 4.642, P = 0.031], but there was no significant difference in return of spontaneous breathing rate [48.57% (34/70) vs. 47.50% (38/80), χ2 = 0.017, P = 0.896]. There was no significant difference in blood gas index between the two groups after 5 minutes of recovery. The PaO2 and SaO2 in the Thumper CPR group were significantly higher than those in the bare-handed CPR group [PaO2 (mmHg, 1 mmHg = 0.133 kPa): 88.13±5.06 vs. 84.26±5.53, SaO2: 0.828±0.068 vs. 0.766±0.031, both P < 0.05), PaCO2 and Lac were significantly lower than those in the bare-handed CPR group [PaCO2 (mmHg): 34.04±4.62 vs. 40.43±5.29, Lac (mmol/L): 6.90±2.07 vs. 8.50±2.12, both P < 0.05]. CONCLUSIONS In the process of emergency rescue, Thumper cardiopulmonary resuscitator is more successful than bare-handed CPR. The recovery rate of Thumper cardiopulmonary resuscitator is more conducive to save manpower and obtain better metabolic effect, which is worthy of clinical promotion and application.
Collapse
|
533
|
Feng S, Ng CWW, Leung AK, Liu HW. Numerical modelling of methane oxidation efficiency and coupled water-gas-heat reactive transfer in a sloping landfill cover. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 68:355-368. [PMID: 28545891 DOI: 10.1016/j.wasman.2017.04.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 03/16/2017] [Accepted: 04/24/2017] [Indexed: 06/07/2023]
Abstract
Microbial aerobic methane oxidation in unsaturated landfill cover involves coupled water, gas and heat reactive transfer. The coupled process is complex and its influence on methane oxidation efficiency is not clear, especially in steep covers where spatial variations of water, gas and heat are significant. In this study, two-dimensional finite element numerical simulations were carried out to evaluate the performance of unsaturated sloping cover. The numerical model was calibrated using a set of flume model test data, and was then subsequently used for parametric study. A new method that considers transient changes of methane concentration during the estimation of the methane oxidation efficiency was proposed and compared against existing methods. It was found that a steeper cover had a lower oxidation efficiency due to enhanced downslope water flow, during which desaturation of soil promoted gas transport and hence landfill gas emission. This effect was magnified as the cover angle and landfill gas generation rate at the bottom of the cover increased. Assuming the steady-state methane concentration in a cover would result in a non-conservative overestimation of oxidation efficiency, especially when a steep cover was subjected to rainfall infiltration. By considering the transient methane concentration, the newly-modified method can give a more accurate oxidation efficiency.
Collapse
|
534
|
Wang B, An N, Shaikh AS, Wang H, Xiao L, Liu H, Li J, Zhao D. Hyperosmolarity evokes histamine release from ileum mucosa by stimulating a cholinergic pathway. Biochem Biophys Res Commun 2017; 493:1037-1042. [PMID: 28939039 DOI: 10.1016/j.bbrc.2017.09.093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/17/2017] [Indexed: 12/18/2022]
Abstract
Changes in extracellular osmolarity lead to alteration in cellular volume. In the study, we examined the effects of hyperosmolarity on short-circuit currents (Isc) in the rat ileum using the Ussing chamber technique. Mucosal exposure to 20 mM glucose evoked a decrease of ISC in the rat ileum, which was antagonized by the stretch-activated channel blocker GdCl3, TTX and atropine, respectively. In contrast, it was not blocked by phlorizin, a Na+-glucose cotransporter SGLT1 inhibitor. Furthermore, the unabsorbed substances, such as sucrose, lactulose or urea, also induced a decrease of ISC in rat ileum. ELISA results revealed that 20 mM glucose stimulated the release of histamine from rat ileum mucosa, which was attenuated by TTX. In addition, the glucose-induced ISC was depressed by pyrilamine, a histamine H1 receptor blocker (H1 antagonist) whereas it was not affected by ranitidine (H2 antagonist), clobenpropit (H3 antagonists) or JNJ7777120 (H4 antagonist), respectively. The ion substitution experiments suggest that the changes of Na+ and HCO3- ion flux underlie the glucose-induced ISC. In conclusion, osmotic stimulus decreased the basal ISC of rat ileum by evoking histamine release from ileum mucosa. The changes of Na+ and HCO3- ion transport are involved in the glucose-evoked decrease of basal ISC.
Collapse
|
535
|
Pedersen NC, Kim Y, Liu H, Galasiti Kankanamalage AC, Eckstrand C, Groutas WC, Bannasch M, Meadows JM, Chang KO. Efficacy of a 3C-like protease inhibitor in treating various forms of acquired feline infectious peritonitis. J Feline Med Surg 2017; 20:378-392. [PMID: 28901812 PMCID: PMC5871025 DOI: 10.1177/1098612x17729626] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Objectives The safety and efficacy of the 3C-like protease inhibitor GC376 was tested on
a cohort of client-owned cats with various forms of feline infectious
peritonitis (FIP). Methods Twenty cats from 3.3–82 months of age (mean 10.4 months) with various forms
of FIP were accepted into a field trial. Fourteen cats presented with wet or
dry-to-wet FIP and six cats presented with dry FIP. GC376 was administered
subcutaneously every 12 h at a dose of 15 mg/kg. Cats with neurologic signs
were excluded from the study. Results Nineteen of 20 cats treated with GC376 regained outward health within 2 weeks
of initial treatment. However, disease signs recurred 1–7 weeks after
primary treatment and relapses and new cases were ultimately treated for a
minimum of 12 weeks. Relapses no longer responsive to treatment occurred in
13 of these 19 cats within 1–7 weeks of initial or repeat treatment(s).
Severe neurologic disease occurred in 8/13 cats that failed treatment and
five cats had recurrences of abdominal lesions. At the time of writing,
seven cats were in disease remission. Five kittens aged 3.3–4.4 months with
wet FIP were treated for 12 weeks and have been in disease remission after
stopping treatment and at the time of writing for 5–14 months (mean 11.2
months). A sixth kitten was in remission for 10 weeks after 12 weeks of
treatment, relapsed and is responding to a second round of GC376. The
seventh was a 6.8-year-old cat with only mesenteric lymph node involvement
that went into remission after three relapses that required progressively
longer repeat treatments over a 10 month period. Side effects of treatment
included transient stinging upon injection and occasional foci of
subcutaneous fibrosis and hair loss. There was retarded development and
abnormal eruption of permanent teeth in cats treated before 16–18 weeks of
age. Conclusions and relevance GC376 showed promise in treating cats with certain presentations of FIP and
has opened the door to targeted antiviral drug therapy.
Collapse
|
536
|
Zhang X, Miao J, Hu BX, Liu H, Zhang H, Ma Z. Hydrogeochemical characterization and groundwater quality assessment in intruded coastal brine aquifers (Laizhou Bay, China). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:21073-21090. [PMID: 28730358 DOI: 10.1007/s11356-017-9641-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 06/26/2017] [Indexed: 06/07/2023]
Abstract
The aquifer in the coastal area of the Laizhou Bay is affected by salinization processes related to intense groundwater exploitation for brine resource and for agriculture irrigation during the last three decades. As a result, the dynamic balances among freshwater, brine, and seawater have been disturbed and the quality of groundwater has deteriorated. To fully understand the groundwater chemical distribution and evolution in the regional aquifers, hydrogeochemical and isotopic studies have been conducted based on the water samples from 102 observation wells. Groundwater levels and salinities in four monitoring wells are as well measured to inspect the general groundwater flow and chemical patterns and seasonal variations. Chemical components such as Na+, K+, Ca2+, Mg2+, Sr2+, Cl-, SO42-, HCO3-, NO3-, F-, and TDS during the same period are analyzed to explore geochemical evolution, water-rock interactions, sources of salt, nitrate, and fluoride pollution in fresh, brackish, saline, and brine waters. The decreased water levels without typical seasonal variation in the southeast of the study area confirm an over-exploitation of groundwater. The hydrogeochemical characteristics indicate fresh-saline-brine-saline transition pattern from inland to coast where evaporation is a vital factor to control the chemical evolution. The cation exchange processes are occurred at fresh-saline interfaces of mixtures along the hydraulic gradient. Meanwhile, isotopic data indicate that the brine in aquifers was either originated from older meteoric water with mineral dissolution and evaporation or repeatedly evaporation of retained seawater with fresher water recharge and mixing in geological time. Groundwater suitability for drinking is further evaluated according to water quality standard of China. Results reveal high risks of nitrate and fluoride contamination. The elevated nitrate concentration of 560 mg/L, which as high as 28 times of the standard content in drinking water is identified in the south region. In addition, the nitrate and ammonia data of the Wei River suggests decreasing nitrification rate in the study area from inland to estuary. High fluoride concentration, larger than 1 mg/L, is also detected in an area of about 50% of the study region. The saltwater intrusion is analyzed to be responsible for part of dissolution of minerals containing fluoride. Therefore, water treatment before drinking is needed in urgent to reduce the health expose risk.
Collapse
|
537
|
Li J, Kang S, Fu R, Wu L, Wu W, Liu H, Gregor D, Zuo W, Bekker A, Ye JH. Inhibition of AMPA receptor and CaMKII activity in the lateral habenula reduces depressive-like behavior and alcohol intake in rats. Neuropharmacology 2017; 126:108-120. [PMID: 28865912 DOI: 10.1016/j.neuropharm.2017.08.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 08/24/2017] [Accepted: 08/28/2017] [Indexed: 10/18/2022]
Abstract
Depression is a well-known risk factor for developing relapse drinking, but the neuronal mechanisms underlying the interactions between depression and alcohol use disorders remain elusive. Accumulating evidence has associated depression with hyperactivity of the lateral habenula (LHb), an epithalamic structure in the brain that encodes aversive signals. Glutamate receptors contribute substantially to the excitability of LHb neurons. Glutamatergic synapses in LHb neurons largely express GluA1-containing α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (AMPAR) that can be modulated by Ca2+/calmodulin-dependent protein II (CaMKII). In the current study, we tested the hypothesis that withdrawal from repeated cycles of ethanol drinking triggers an increase in LHb AMPAR and CaMKII activity concomitant with depression-like symptoms, and their inhibitions bring a reduction in depressive-like behaviors and alcohol consumption. Western blotting revealed a higher level of phosphorylated AMPAR GluA1 subunit at a CaMKII locus (GluA1-Ser831) in the LHb of ethanol-withdrawn rats than that of age-matched naïve counterparts. In ethanol-withdrawn rats, pharmacological inhibition of LHb AMPAR activity significantly mitigated the depressive-like behavior and ethanol drinking and seeking behaviors, but affected neither sucrose intake nor locomotor activity; and inhibition of LHb CaMKII activity, or chemogenetic inhibition of LHb activity produced similar effects. Conversely, activation of LHb AMPARs induced depressive-like behaviors in ethanol-naïve rats. These results demonstrate that CaMKII-AMPAR signaling in the LHb exemplifies a molecular basis for depressive-like symptoms during ethanol withdrawal and that inhibition of this signaling pathway may offer a new therapeutic approach to address the comorbidity of alcohol abuse and depression.
Collapse
|
538
|
Zheng Y, Ma K, Lyu H, Huang Y, Liu H, Liu L, Che Y, Liu X, Zou H, Yin WB. Genetic Manipulation of the COP9 Signalosome Subunit PfCsnE Leads to the Discovery of Pestaloficins in Pestalotiopsis fici. Org Lett 2017; 19:4700-4703. [DOI: 10.1021/acs.orglett.7b02346] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
539
|
Zhang Z, Guo W, Zhang Y, Wang X, Liu H, Xu S, Zhao Z, Chen D. Changes in the expression of Col IV, gelatinase and TIMP-1 in oral leukoplakia. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:8535-8543. [PMID: 31966707 PMCID: PMC6965367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 06/05/2017] [Indexed: 06/10/2023]
Abstract
Type IV collagen (Col IV) is an important protein in the basement membrane (BM), which can regulate the attachment of epithelium and the lamina propria. To test the hypothesis that Col IV may play a significant role in the progression of oral leukoplakia, we have observed the morphology and distribution of Col IV in 40 patients with oral leukoplakia (epithelial hyperplasia and dysplasia). The results showed that the expression of Col IV in the BM was continuous in normal oral mucosa, while it was non-continuous or fragmented in epithelial dysplasia by immunofluorescent staining. Consequently, to analyze the correlated factors of the Col IV destruction, the expressions of gelatinase (MMP-2 and MMP-9) and tissue inhibitor of metalloproteinases -1 (TIMP-1) were detected in oral leukoplakia tissues by immunochemical staining. Then statistical analyses were performed to determine their correlations with Col IV levels. The statistics showed that the decreasing of Col IV was closely related to the increasing of MMP-9 in both epithelial hyperplasia and dysplasia (P < 0.05), while MMP-2 expression was closely related to the increasing of Col IV expression in epithelial dysplasia (P < 0.05). Therefore, monitoring changes in the expression of Col IV, gelatinase and TIMP-1 is a useful technique for assessing prognosis of oral leukoplakia.
Collapse
|
540
|
Wang H, Liu H, Cai L, Wang C, Lv Q. Using the multi-objective optimization replica exchange Monte Carlo enhanced sampling method for protein-small molecule docking. BMC Bioinformatics 2017; 18:327. [PMID: 28693470 PMCID: PMC5504647 DOI: 10.1186/s12859-017-1733-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 06/15/2017] [Indexed: 12/30/2022] Open
Abstract
Background In this study, we extended the replica exchange Monte Carlo (REMC) sampling method to protein–small molecule docking conformational prediction using RosettaLigand. In contrast to the traditional Monte Carlo (MC) and REMC sampling methods, these methods use multi-objective optimization Pareto front information to facilitate the selection of replicas for exchange. Results The Pareto front information generated to select lower energy conformations as representative conformation structure replicas can facilitate the convergence of the available conformational space, including available near-native structures. Furthermore, our approach directly provides min-min scenario Pareto optimal solutions, as well as a hybrid of the min-min and max-min scenario Pareto optimal solutions with lower energy conformations for use as structure templates in the REMC sampling method. These methods were validated based on a thorough analysis of a benchmark data set containing 16 benchmark test cases. An in-depth comparison between MC, REMC, multi-objective optimization-REMC (MO-REMC), and hybrid MO-REMC (HMO-REMC) sampling methods was performed to illustrate the differences between the four conformational search strategies. Conclusions Our findings demonstrate that the MO-REMC and HMO-REMC conformational sampling methods are powerful approaches for obtaining protein–small molecule docking conformational predictions based on the binding energy of complexes in RosettaLigand.
Collapse
|
541
|
Cheng Z, Wang B, Lai H, Liu P, Zhang D, Tian D, Liu H, Yu X, Sun B, Sun K. Janus Copper Mesh Film with Unidirectional Water Transportation Ability toward High Efficiency Oil/Water Separation. Chem Asian J 2017; 12:2085-2092. [DOI: 10.1002/asia.201700488] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 04/23/2017] [Indexed: 01/06/2023]
|
542
|
Chen B, Tian J, Zhang J, Wang K, Liu L, Yang B, Bao L, Liu H. Triterpenes and meroterpenes from Ganoderma lucidum with inhibitory activity against HMGs reductase, aldose reductase and α-glucosidase. Fitoterapia 2017; 120:6-16. [DOI: 10.1016/j.fitote.2017.05.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 05/11/2017] [Accepted: 05/16/2017] [Indexed: 12/17/2022]
|
543
|
Zhang M, Wang J, Liu H. The Probabilistic Profitable Tour Problem. INTERNATIONAL JOURNAL OF ENTERPRISE INFORMATION SYSTEMS 2017. [DOI: 10.4018/ijeis.2017070104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A new routing problem is introduced and named as the probabilistic profitable tour problem in this paper. The problem is defined on a complete graph where profits are associated with the vertices and travel costs are associated with the edges. Each vertex (customer) has a probability of requiring a visit on a given day. The tour starts and ends at a fixed vertex, and each vertex can never be visited more than one time. Once a vertex is visited, an associated profit is collected and the corresponding travel cost occurs. The objective is to find a subset of vertices and an a priori tour through those vertices that maximizes the difference between the expected profits and the expected travel costs. The problem is confronted by some big e-tailing companies who need to determine, among the set of all potential customers, the customers to be served by themselves and outsource the unselected customers. The problem under study is shown to be NP-hard in this paper. The authors provide a non-linear mathematical formulation for it. Consequently, a genetic algorithm is developed to solve this problem. The computational experiments carried out on small- and moderate-size instances show a good performance of the proposed algorithm.
Collapse
|
544
|
Huang T, Liu H, Liu P, Liu P, Li L, Shen J. Zwitterionic copolymers bearing phosphonate or phosphonic motifs as novel metal-anchorable anti-fouling coatings. J Mater Chem B 2017; 5:5380-5389. [PMID: 32264077 DOI: 10.1039/c7tb01017f] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Developing a facile but efficient anti-fouling surface coating is highly required for metallic implants. Here, we report two kinds of zwitterionic copolymers (both random and block) bearing phosphonic/phosphonate motifs/segments as novel metal anchorable antifouling coatings. Through conventional free radical polymerization and reversible addition-fragmentation chain transfer (RAFT) polymerization, three types of zwitterionic-phosphonic random copolymers with varying mol. ratios (9 : 1, 8 : 2, and 6 : 4) and a phosphonate-zwitterionic block copolymer were precisely prepared based on zwitterionic sulfobetaine methacrylate (SBMA) and phosphonate/phosphonic methacrylate. As evidenced by XPS and water contact angle tests, the two kinds of copolymers with distinguished presenting manners of the metal-anchorable phosphonate/phosphonic motifs were all successfully immobilized on the Ti substrates through a facile one-step post-functionalization. The immobilized copolymers equally exhibited strong inhibition of protein adsorption, platelet adhesion, and bacterial adhesion, endowing significantly improved antifouling ability to the metallic substrates. This work not only provides a novel approach to improve the antifouling ability of Ti substrates, the utilization of phosphonic/phosphonate based copolymers as efficient metal-anchorable coatings may offer a new platform for versatile surface functionalization of many metallic substrates.
Collapse
|
545
|
Zhu H, Ou CX, van den Heuvel W, Liu H. Privacy calculus and its utility for personalization services in e-commerce: An analysis of consumer decision-making. INFORMATION & MANAGEMENT 2017. [DOI: 10.1016/j.im.2016.10.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
546
|
Basnet BB, Liu L, Bao L, Liu H. Current and future perspective on antimicrobial and anti-parasitic activities of Ganoderma sp.: an update. Mycology 2017; 8:111-124. [PMID: 30123634 PMCID: PMC6059132 DOI: 10.1080/21501203.2017.1324529] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 04/25/2017] [Indexed: 10/26/2022] Open
Abstract
Medicinal mushroom Ganoderma sp. is considered to be a key source for the production of therapeutic agents. Our current review indicates that a limited number (<19%; 79 out of >430) of isolated compounds have been tested and known to be active against several microorganisms and parasites. In this review, we aim to summarise all the antimicrobial and anti-parasitic works on Ganoderma sp. displayed on web of science, google scholar and endnote X7 from 1932 to August 2016. We further present and discuss the structure of active compounds against microorganisms and parasites. In addition, we also discuss the possible further research to identify lead compounds from Ganoderma sp. as a novel strategy to combat the potential global emergence of bad bugs and parasites.
Collapse
|
547
|
Zhang X, Liu X, Liang Y, Xiao Y, Ma L, Guo X, Miao B, Liu H, Peng D, Huang W, Yin H. Comparative Genomics Unravels the Functional Roles of Co-occurring Acidophilic Bacteria in Bioleaching Heaps. Front Microbiol 2017; 8:790. [PMID: 28529505 PMCID: PMC5418355 DOI: 10.3389/fmicb.2017.00790] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 04/18/2017] [Indexed: 12/27/2022] Open
Abstract
The spatial-temporal distribution of populations in various econiches is thought to be potentially related to individual differences in the utilization of nutrients or other resources, but their functional roles in the microbial communities remain elusive. We compared differentiation in gene repertoire and metabolic profiles, with a focus on the potential functional traits of three commonly recognized members (Acidithiobacillus caldus, Leptospirillum ferriphilum, and Sulfobacillus thermosulfidooxidans) in bioleaching heaps. Comparative genomics revealed that intra-species divergence might be driven by horizontal gene transfer. These co-occurring bacteria shared a few homologous genes, which significantly suggested the genomic differences between these organisms. Notably, relatively more genes assigned to the Clusters of Orthologous Groups category [G] (carbohydrate transport and metabolism) were identified in Sulfobacillus thermosulfidooxidans compared to the two other species, which probably indicated their mixotrophic capabilities that assimilate both organic and inorganic forms of carbon. Further inspection revealed distinctive metabolic capabilities involving carbon assimilation, nitrogen uptake, and iron-sulfur cycling, providing robust evidence for functional differences with respect to nutrient utilization. Therefore, we proposed that the mutual compensation of functionalities among these co-occurring organisms might provide a selective advantage for efficiently utilizing the limited resources in their habitats. Furthermore, it might be favorable to chemoautotrophs' lifestyles to form mutualistic interactions with these heterotrophic and/or mixotrophic acidophiles, whereby the latter could degrade organic compounds to effectively detoxify the environments. Collectively, the findings shed light on the genetic traits and potential metabolic activities of these organisms, and enable us to make some inferences about genomic and functional differences that might allow them to co-exist.
Collapse
|
548
|
Ning Y, Li K, Fu C, Ren Y, Zhang Y, Liu H, Cui F, Zou Y. Enhanced Functional Connectivity between the Bilateral Primary Motor Cortices after Acupuncture at Yanglingquan (GB34) in Right-Hemispheric Subcortical Stroke Patients: A Resting-State fMRI Study. Front Hum Neurosci 2017; 11:178. [PMID: 28443010 PMCID: PMC5385857 DOI: 10.3389/fnhum.2017.00178] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Accepted: 03/27/2017] [Indexed: 01/09/2023] Open
Abstract
Increasing neuroimaging researches in stroke rehabilitation had revealed the neural mechanisms of rehabilitation therapy. However, little was known about the neural mechanisms of acupuncture therapy in subcortical stroke patients. The aim of this study was to investigate the changes of functional connectivity (FC) between the bilateral primary motor cortices (M1s) after acupuncture intervention in right subcortical stroke patients. Twenty right-hemispheric subcortical stroke patients and 20 healthy subjects were recruited to undergo one functional magnetic resonance imaging (fMRI) scanning. The scanning consisted of resting-state fMRI before and after needling at Yanglinquan (GB34), and task-evoked fMRI. The most significant active point during the left passive thumb-to-index task was chosen as the seed point. The seed-based FC analysis of the bilateral M1s was performed. Stroke patients revealed decreased FC between the bilateral M1s compared with healthy subjects, and the decreased FC was significantly enhanced after acupuncture at GB34. Acupuncture could increase the intrinsically decreased FC between the bilateral M1s which provided further insight into the neural mechanisms of acupuncture for motor function recovery in stroke patients.
Collapse
|
549
|
Lei Y, Li J, Wang Z, Sun J, Chen F, Liu H, Ma X, Liu Z. Atomic-scale investigation of a new phase transformation process in TiO 2 nanofibers. NANOSCALE 2017; 9:4601-4609. [PMID: 28323293 DOI: 10.1039/c6nr08046d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Crystallography of phase transformation combining transmission electron microscopy (TEM) with in situ heating techniques and X-ray diffraction (XRD) can provide critical information regarding solid-state phase transitions and the transition-induced interfaces in TiO2 nanomaterials theoretically and experimentally. Two types of reduced titanium oxides (Ti3O5, Ti6O11) are found during ex situ and in situ heating of TiO2 (B) nanofibers with a specific morphology of the {100} single form (SF) in air and vacuum. The results indicate that the phase transformation process from TiO2 (B) follows the TiO2 (B) → Ti3O5 → Ti6O11 → anatase sequence for the nanofibers with the {100} SF. The occurrence of such a phase transition is selective to the morphology of TiO2 (B) nanofibers. The corresponding orientation relationships (COR) between the four phases are revealed according to the TEM characterization. Four types of coherent interfaces, following the CORs are also found. They are TiO2 (B)/Ti3O5, TiO2 (B)/Ti6O11, Ti6O11/anatase and TiO2 (B)/anatase respectively. The habit plane for the TiO2 (B) to Ti3O5 transition is calculated as the {100}TB by using the invariant line model. The detailed atomic transformation mechanism is elucidated based on the crystallographic features of the four phases.
Collapse
|
550
|
Yang YL, Zhang S, Ma K, Xu Y, Tao Q, Chen Y, Chen J, Guo S, Ren J, Wang W, Tao Y, Yin WB, Liu H. Discovery and Characterization of a New Family of Diterpene Cyclases in Bacteria and Fungi. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700565] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|