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Nie CY, Han T, Zhang L, Li Y, Liu H, Xiao SX, Li Y, Kang H, Liu SY. Cross-sectional and dynamic change of serum metabolite profiling for Hepatitis B-related acute-on-chronic liver failure by UPLC/MS. J Viral Hepat 2014; 21:53-63. [PMID: 24329857 DOI: 10.1111/jvh.12122] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 04/10/2013] [Indexed: 12/11/2022]
Abstract
Summary Acute-on-chronic liver failure(ACLF) is an increasingly recognized entity encompassing an acute deterioration of liver function and results in the failure of one or more organs with high short-term mortality. The focus of this study was to discover noninvasive and reliable biomarkers for the diagnosis and prognosis of hepatitis B-related ACLF. Ultra-performance liquid chromatography-mass spectrometry (UPLC/MS) was used to analyse serum metabolites of 28 patients with hepatitis B-related ACLF, 35 patients with Child-Pugh A cirrhosis, 30 patients with chronic hepatitis B and 35 healthy volunteers (HS). Characteristic metabolites were screened, identified and dynamically tracked to investigate their value for diagnosis and prognosis. After comparing serum metabolic profile of hepatitis B-related ACLF and Child-Pugh A cirrhosis, 99 characteristic metabolites were selected, and 38 of them were identified. Dynamic tracking model demonstrated that 17 metabolites were related to prognosis of hepatitis B-related ACLF, and there were also 11 metabolites which improved with treatment in the survival group. The correlations between these characteristic metabolites and the model for end-stage liver disease score were strong. These observations contributed to the investigation of the mechanisms of hepatitis B-related ACLF manifestation and progression on the metabolic level, and they provided information for the identification of biomarkers for the diagnosis and prognosis of hepatitis B-related ACLF.
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Nie XH, Han T, Ha FU, Liang N, Wang SH, Zhu ZY, Xiang HL. Comparison of the effects of the pretreatment and treatment with RhIL-11 on acute liver failure induced by D-galactosamine. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2014; 18:1142-1150. [PMID: 24817287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To compare the effects of the pretreatment and treatment with recombinant human interleukin-11 (rhIL-11) on acute liver failure induced by D-galactosamine (D-GalN). METHODS The Sprague Dawley (SD) male rats were randomly divided into five groups: control, model, pretreatment, treatment and repeated treatment groups. The acute liver failure model was established by intraperitoneal injections with D-GalN (1400 mg/kg). The pretreatment, treatment and repeated treatment groups were injected subcutaneously with rhIL-11 (500 µg/kg). The rats were killed 24, 48, or 72 h after the D-GalN injection. The symptoms and survival rate of the rats were analysed. Liver injury was assessed by serum ALT and AST levels and by histological analysis. The percentage of Proliferating Cell Nuclear Antigen (PCNA+) cells in the liver tissue was evaluated by immunohistochemistry. RESULTS Compared with the model group, the survival rate of the pretreatment group improved markedly, and these rats were protected from severe hepatic injury, as shown by the decreased serum ALT and AST levels and improved histological results. In the pretreatment group, the percentage of PCNA+ cells was significantly increased in the late stage. In contrast, the treatment and repeated treatment groups did not show improved survival rates or the prevention of severe hepatic injury, as shown by the absence of any decrease in the serum ALT and AST levels and the lack of any improvement in the histological results.The treatment and repeated treatment groups also have a significant increase in the percentage of PCNA+ cells in the late stage. CONCLUSIONS The pretreatment with rhIL-11 can reduce acute liver failure and protect the liver. In contrast, the treatment with rhIL-11 cannot reduce acute liver failure or protect the liver.
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Zhang Y, Zhang WL, Huang DS, Hong L, Wang YZ, Zhu X, Hu HM, Zhang PW, Yi Y, Han T. Clinical effectiveness of multimodality treatment on advanced pediatric hepatoblastoma. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2014; 18:1018-1026. [PMID: 24763882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVES To investigate the effect of multimodality treatment of advanced paediatric hepatoblastoma and the factors affecting the prognosis. PATIENTS AND METHODS 35 childhood patients were treated with multimodality treatments consisting of chemotherapy, surgery, interventional therapy, and autologous peripheral blood stem cell transplantation. Patients were followed up every month. RESULTS 33 patients completed the follow-up, of which 17 were in complete remission, 5 were in partial remission, 1 case got worse, and 10 died. The remission rate was 66.7% (22/33), and the overall survival rate was 69.7% (23/33). 1 patient with advanced hepatoblastoma got high-dose chemotherapy combined with autologous peripheral blood stem cell transplantation (APBSCT) treatment, and a primary lesion by 18 x 15 x 9 cm reduced to 10 x 8 x 4 cm. Remote metastases significantly alleviated, and partial remission reached six months. The overall survival was 9 months after transplantation. Patients with the mixed phenotype of hepatoblastoma had a worse prognosis than with the epithelial phenotype (p < 0.001), and patients in stage IV had a lower survival rate than in stage III (p < 0.001). CONCLUSIONS Multimodality treatment can effectively improve remission rate and prolong the survival of children with the advanced hepatoblastoma. In addition, alpha-fetoprotein (AFP), hepatoblastoma pathological classification and staging are of great use in prediction of prognosis.
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Lim Y, Han T, Kim I. Hypofractionated Chemoradiation Therapy With Temozolomide for Glioblastoma Patients With Poor Prognostic Features. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Han T, Zeng F, Li Z, Liu L, Wei M, Guan Q, Liang X, Peng Z, Liu M, Qin J, Zhang S, Jia B. Biochemical characterization of a recombinant pullulanase from Thermococcus kodakarensis
KOD1. Lett Appl Microbiol 2013; 57:336-43. [DOI: 10.1111/lam.12118] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 06/10/2013] [Accepted: 06/10/2013] [Indexed: 11/27/2022]
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Depré M, Macleod C, Palcza J, Behm M, de Lepeleire I, Han T, Panebianco D, Smith W, Blanchard R, Chodakewitz J, Murphy M, de Hoon J. Lack of hemodynamic interaction between CGRP-receptor antagonist telcagepant (MK-0974) and sumatriptan: results from a randomized study in patients with migraine. Cephalalgia 2013; 33:1292-301. [PMID: 23798725 DOI: 10.1177/0333102413494272] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The objective of this article is to assess the effects of sumatriptan monotherapy, telcagepant monotherapy, and their combination on blood pressure (BP) in migraine patients during a headache-free period. METHODS A double-blind, placebo-controlled, four-period, single-dose, randomized crossover study in 24 migraine patients was conducted. In each period, patients received a single oral dose of sumatriptan 100 mg alone, telcagepant 600 mg alone, sumatriptan 100 mg coadministered with telcagepant 600 mg, or placebo. Semi-recumbent BP was measured pre-dose and at seven post-dose time points over a period of six hours. Individual time-weighted averages in mean arterial pressure (MAP) were evaluated using a linear mixed-effects model. The pharmacokinetics of sumatriptan alone and in the presence of telcagepant were also evaluated using limited sampling times. RESULTS The mean difference in time-weighted (0-2.5 h) MAP (90% confidence interval) was 1.2 mmHg (-0.2, 2.7) between telcagepant and placebo, 4.0 mmHg (2.5, 5.5) between sumatriptan and placebo, and 1.5 mmHg (0.0, 3.0) between telcagepant with sumatriptan vs sumatriptan alone. When coadministered with telcagepant, the AUC0-6h and C(max) of sumatriptan were increased by 23% and 24%, respectively. The small MAP increases observed after coadministration could possibly be associated with the slight elevations in sumatriptan levels. CONCLUSION Telcagepant does not elevate mean MAP, and coadministration of telcagepant with sumatriptan results in elevations in MAP similar to those observed following administration of sumatriptan alone in migraineurs during the interictal period. When coadministered, telcagepant slightly increases the plasma levels of sumatriptan, but without an apparent clinically meaningful effect.
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Han T, Tailor R, Melancon A, Howell R, Mourtada F, Salehpour M. SU-C-137-07: A Comprehensive Investigation of Dosimetric Uncertainties in Junction Region of Breast Superclavicular and Tangential Fields. Med Phys 2013. [DOI: 10.1118/1.4813938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Han T, Li XL, Cai DL, Zhong Y, Geng SS. Effects of glutamine-supplemented enteral or parenteral nutrition on apoptosis of intestinal mucosal cells in rats with severe acute pancreatitis. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2013; 17:1529-1535. [PMID: 23771542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Hhigh mortality of the severe acute pancreatitis (SAP) is caused by the damage of intestinal mucosal barrier. Glutamine (Gln) has been used to protect the intestinal mucosal barrier in the treatments of many severe diseases. AIM To explore the impact of glutamine on the apoptosis of intestinal mucosa and Bax expression in rats with SAP. MATERIALS AND METHODS Eighty male SD rats were randomly divided into five groups: sham-operated group, SAP + parenteral nutrition (PN) group, SAP + enteral nutrition (EN) group, SAP + EN + Gln group, and SAP + PN + Gln group. Rats were sacrificed 4 days and 7 days after nutritional support. The intestinal epithelial apoptosis and the expression of Bax were examined by TUNEL assay and immunohistochemical staining, respectively. RESULTS The apoptotic index (AI) of SAP groups was higher than that of sham-operated group. After 7 days treatment, the AI of SAP + EN + Gln group was significantly lower than that of the SAP + EN or SAP + PN group. In addition, the AI of the SAP groups after 7 days treatment was significantly lower than that of the same groups at 4 days after treatment. Furthermore, the Bax expression of SAP + EN + Gln group was significantly lower than that in the SAP + EN or SAP + PN group. However, no significant differences were observed between SAP + EN + Gln group and SAP + PN + Gln group in AI and Bax expression. CONCLUSIONS Combination of Gln and parenteral nutrition or enteral nutrition inhibits the apoptosis of intestinal epithelial cells and maintains the integrity of the intestinal mucosal barrier.
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Mainelis G, Seshadri S, Garbuzenko OB, Han T, Wang Z, Minko T. Characterization and application of a nose-only exposure chamber for inhalation delivery of liposomal drugs and nucleic acids to mice. J Aerosol Med Pulm Drug Deliv 2013; 26:345-54. [PMID: 23530772 DOI: 10.1089/jamp.2011-0966] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND A small nose-only exposure chamber was evaluated for inhalation delivery of drug carrier systems (DCSs) to mice for the treatment of lung cancer. The chamber then was used for inhalation delivery of an anticancer drug, antisense oligonucleotides (ASO), and small interfering RNA (siRNA) directly to the cancerous lungs of mice. METHODS The uniformity of particle delivery across the ports of the exposure chamber and stability of the DCS (liposomes) during continuous aerosolization by a Collison nebulizer were examined. The mean produced particle size by number was approximately 130 nm, and the mass median diameter was approximately 270 nm. The system was then used to deliver DCS containing doxorubicin (DOX) and ASO or siRNA targeted to multidrug resistance-associated protein 1 (MRP1) mRNA as suppressors of cancer cell resistance. The retention of the drug in the lungs and the effect on tumor size were compared after inhalation delivery and intravenous injection in a nu/nu mouse model of lung cancer. RESULTS The aerosol mass across the four inhalation ports had a coefficient of variation of less than 12%, and approximately 1.4% of the nebulized mass was available for inhalation at each port. The mean size of 130 nm of liposomal DCS did not change significantly during continuous 60-min aerosolization. For inhalation delivery of DCS with DOX+ASO/siRNA, the amount of drugs available for inhalation was lower compared with intravenous injection of DOX; however, the observed lung dose and the retention time were significantly higher. The delivery of DOX+ASO/siRNA via inhalation resulted in tumor volume reduction of more than 90%, whereas only about 40% reduction was achieved after intravenous injection of DOX. CONCLUSIONS The investigated exposure system is suitable for inhalation delivery of complex DCS, and its use to deliver DCS containing anticancer drugs and resistance suppressors via inhalation offered a superior method for lung cancer treatment in mice compared with intravenous injections.
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Jiang M, Mou CZ, Han T, Wang M, Yang W. Thrombospondin-1 and transforming growth factor-β1 levels in prolactinoma and their clinical significance. J Int Med Res 2013; 40:1284-94. [PMID: 22971480 DOI: 10.1177/147323001204000407] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate the roles of angiogenesis, thrombospondin-1 (TSP-1) and transforming growth factor-β1 (TGF-β1) in invasive and noninvasive prolactinoma. METHODS TSP-1 and TGF-β1 protein were examined using immunohistochemistry and Western blotting in 81 prolactinomas. Angiogenesis was assessed by measuring microvessel density via CD34 immunostaining. RESULTS Microvessel density was significantly higher in invasive prolactinomas than in noninvasive prolactinomas. Immunohistochemistry demonstrated that significantly fewer invasive prolactinomas were positive for TSP-1 compared with noninvasive prolactinomas (17.9% versus 50.0%, respectively), and significantly higher numbers of invasive prolactinomas were positive for TGF-β1 compared with noninvasive prolactinomas (82.1% versus 42.9%, respectively). Microvessel density was significantly lower in TSP-1-positive prolactinomas than in TSP-1-negative prolactinomas, and significantly higher in TGF-β1-positive prolactinomas than in TGF-β1-negative prolactinomas. CONCLUSIONS These results suggest a close relationship between angiogenesis and tumour invasiveness in prolactinoma. TSP-1 and TGF-β1 may play important roles in the progression of prolactinoma, by affecting angiogenesis.
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Han T, Tailor R, LaNeave S, Howell R, Mourtada F, Salehpour M. SU-E-T-528: Appraisal of Acorus XB and Convolution Dose Algorithms in Field Junction of Breast Tangential/superclavicular Fields. Med Phys 2012; 39:3827. [DOI: 10.1118/1.4735617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Han T, Mourtada F, Repchak R, Tonigan J, Mikell J, Howell R, Salehpour M, Molineu A, Followill D. SU-E-T-519: Experimental Evaluation of Deterministic Acuros XB Radiation Transport Algorithm for Heterogeneity Dose Calculation Using the Radiological Physics Center's Lung Phantom. Med Phys 2012; 39:3825. [DOI: 10.1118/1.4735608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Li S, Wang Z, Liu Y, Han T, Wu Z, Wei C, Wei H, Li J, Tong W. Bending sensor based on intermodal interference properties of two-dimensional waveguide array fiber. OPTICS LETTERS 2012; 37:1610-1612. [PMID: 22627512 DOI: 10.1364/ol.37.001610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We propose a highly sensitive bending sensor based on the intermodal interference properties of a strongly coupled two-dimentional waveguide array fiber (WAF). The interference resonance peaks formed by the SMF-WAF-SMF Mach-Zehnder interferometer are intrinsically the result of interference between the LP(01)-like supermode and other higher order supermodes, displaying supernormal sensitivity to bending in a wide curvature range. The bending sensitivity of the intermodal MZI is a quadratic function of curvature, and the resonance wavelength shift is up to 100 nm within a curvature range 0-10 m(-1). The fabrication reveals briefness, and temperature response shows little impact on the bend sensing precision. The high bending sensitivity and wide sensing range can make this device a candidate for bending discrimination and measurement in widespread areas.
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Milne LM, Lamagni T, Efstratiou A, Foley C, Gilman J, Lilley M, Guha S, Head F, Han T. Streptococcus pyogenes cluster in a care home in England April to June 2010. Euro Surveill 2011. [DOI: 10.2807/ese.16.47.20021-en] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Two fatal cases of Streptococcus pyogenes emm st22.6 bacteraemia occurred in a care home in England during April and June 2010, initiating a cluster investigation. The first case had left the home 13 days before the second case took up residence. We sought further cases and carriers. We swabbed throat and chronic skin lesions from residents and staff and examined these specimens for the presence of S. pyogenes. 61 specimens were taken from 18 of 19 residents and 39 of 39 staff. All results from swabbing were culture negative. We observed infection control practices and the environment at the care home for deficiencies. Issues were identified relating to the correct use of personal protective equipment, hand hygiene, clinical waste and laundry. Infection control practices were improved and training given. Infection control practices and the environment at a care home should be examined as part of the investigation of a S. pyogenes cluster. Screening for carriage of S. pyogenes should be done before antibiotic chemoprophylaxis is issued to care home residents and staff.
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Milne LM, Lamagni T, Efstratiou A, Foley C, Gilman J, Lilley M, Guha S, Head F, Han T. Streptococcus pyogenes cluster in a care home in England April to June 2010. Euro Surveill 2011; 16:20021. [PMID: 22152707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Two fatal cases of Streptococcus pyogenes emm st22.6 bacteraemia occurred in a care home in England during April and June 2010, initiating a cluster investigation. The first case had left the home 13 days before the second case took up residence. We sought further cases and carriers. We swabbed throat and chronic skin lesions from residents and staff and examined these specimens for the presence of S. pyogenes. 61 specimens were taken from 18 of 19 residents and 39 of 39 staff. All results from swabbing were culture negative. We observed infection control practices and the environment at the care home for deficiencies. Issues were identified relating to the correct use of personal protective equipment, hand hygiene, clinical waste and laundry. Infection control practices were improved and training given. Infection control practices and the environment at a care home should be examined as part of the investigation of a S. pyogenes cluster. Screening for carriage of S. pyogenes should be done before antibiotic chemoprophylaxis is issued to care home residents and staff.
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Han T, Mikell J, Salehpour M, Mourtada F. MO-F-BRB-02: Dosimetric Comparison of Acuros XB Deterministic Radiation Transport Method with Monte Carlo and Model-Based Convolution Methods in Heterogeneous Media. Med Phys 2011. [DOI: 10.1118/1.3613003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Pei Y, Han T, Ma X, Li Y, Xing J, Song Z. PP-124 The variation of HBsAg titre in patients with chronic hepatitis B, HBV-related liver cirrhosis and hepatocellular carcinoma. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60276-2] [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] Open
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Han T, Mourtada F, Kisling K, Mikell J, Followill D, Howell R. SU-E-T-720: Dosimetric Verification of Deterministic Acuros XB Radiation Transport Algorithm for IMRT and VMAT Plans with the RPC H&N Phantom. Med Phys 2011. [DOI: 10.1118/1.3612682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Han T, Gray N, Vasquez MM, Zou LP, Shen K, Duncan B. Comparison of the GMFM-66 and the PEDI Functional Skills Mobility domain in a group of Chinese children with cerebral palsy. Child Care Health Dev 2011; 37:398-403. [PMID: 20825421 DOI: 10.1111/j.1365-2214.2010.01149.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Previous research has suggested there is a high level of comparability between the Gross Motor Function Measure-66 (GMFM-66) and the Pediatric Evaluation of Disability Inventory (PEDI) Functional Skills Mobility domain. However, there are only a few studies that have examined the correlations between these instruments. The purpose of this study was to determine the correlation between the GMFM-66 and the PEDI Functional Skills Mobility domain scaled scores in a group of Chinese children with spastic cerebral palsy, at the ages of 12-70 months, in order to explore the feasibility of using them interchangeably. METHODS Secondary data analysis was conducted of data collected during a prospective international collaborative study that used the GMFM-66 and the PEDI to examine the impact of treatment. This study examined the Pearson correlations between the GMFM-66 and the PEDI Functional Skills Mobility domain at six time points over the course of 28 consecutive weeks for 115 Chinese children who participated at baseline. RESULTS Pearson correlations between the GMFM-66 and the PEDI Functional Skills Mobility domain ranged from 0.83 to 0.90 for the six time points of data collection, with statistically significant P-values <0.0001 for each correlation. CONCLUSIONS These results support previous research that the GMFM-66 and the PEDI Functional Skills Mobility domain are complementary assessments that may be used interchangeably when it is not possible to administer both.
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Han T, Nazarenko Y, Lioy PJ, Mainelis G. Collection efficiencies of an electrostatic sampler with superhydrophobic surface for fungal bioaerosols. INDOOR AIR 2011; 21:110-20. [PMID: 21204982 PMCID: PMC4027968 DOI: 10.1111/j.1600-0668.2010.00685.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
UNLABELLED We recently developed an electrostatic precipitator with superhydrophobic surface (EPSS), which collects particles into a 10- to 40-μl water droplet allowing achievement of very high concentration rates (defined as the ratio of particle concentration in the collection liquid vs. the airborne particle concentration per time unit) when sampling airborne bacteria. Here, we analyzed the performance of this sampler when collecting three commonly found fungal spores--Cladosporium cladosporioides, Penicillium melinii, and Aspergillus versicolor--under different operating conditions. We also adapted adenosine triphosphate (ATP)-based bioluminescence for the analysis of collection efficiency and the concentration rates. The collection efficiency ranged from 10 to 36% at a sampling flow rate of 10 l/min when the airborne fungal spore concentration was approximately 10(5)-10(6) spores/m(3) resulting in concentration rates in the range of 1 × 10(5)-3 × 10(5)/min for a 10-μl droplet. The collection efficiency was inversely proportional to the airborne spore concentration and it increased to above 60% for common ambient spore concentrations, e.g., 10(4)-10(5) spores/m(3). The spore concentrations determined by the ATP-based method were not statistically different from those determined by microscopy and allowed us to analyze spore concentrations that were too low to be reliably detected by microscopy. PRACTICAL IMPLICATIONS The new electrostatic precipitator with superhydrophobic surface (EPSS) collects airborne fungal spores into small water droplets (10 and 40 μl) allowing achievement of concentration rates that are higher than those of most currently available bioaerosol samplers. Biosamplers with high concentration rates enable detection of low ambient aerial bioaerosol concentrations in various environments, including indoors air, and would be useful for improved exposure assessment. A successful adaptation of the adenosine triphosphate (ATP)-based bioluminescence assay for the quantification of fungal spores from a specific species enables fast sample analysis in laboratory investigations. This rapid assay could be especially useful when investigating the performance of biological samplers as a function of multiple operational parameters.
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Dhillon R, McKelvie P, Wang Y, Han T, Murphy M. Cystic lesion of the ventriculus terminalis in an adult. J Clin Neurosci 2010; 17:1601-3. [DOI: 10.1016/j.jocn.2010.04.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 03/30/2010] [Accepted: 04/04/2010] [Indexed: 11/28/2022]
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Lai C, Liu X, Zhong Y, Shen Y, Han T, Ge S, Yi Y, You Z, Wang T, Shaw C. WE-A-201B-02: Calcification Visibility in Cone Beam Breast CT: Effects of Under-Sampling and Limited Angle Scans. Med Phys 2010. [DOI: 10.1118/1.3469334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Yi Y, Lai C, Han T, Liu X, Shen Y, Zhong Y, Ge S, You Z, Wang T, Shaw C. SU-GG-I-29: Comparison of Ellipsoidal and Cylindrical Breast Phantoms for Accuracy of Monte Carlo Dose Estimation in Cone Beam Breast CT. Med Phys 2010. [DOI: 10.1118/1.3468062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Han T, Liu H, Yu ZL, Li J, Wang L, Xiao SX, Li Y, Yu ML. Serum peptide profiles during progression of chronic hepatitis B virus infection to liver failure. J Viral Hepat 2010; 17 Suppl 1:18-23. [PMID: 20586930 DOI: 10.1111/j.1365-2893.2010.01267.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Chronic hepatitis B virus (HBV)-infected patients with liver failure have a poor prognosis, and no satisfactory biomarkers are available for diagnosis before the end-stage. We explored serum peptide profiling for diagnosis and prediction of progression to liver failure in HBV-infected patients. Serum samples (164) from healthy subjects (n = 20), or subjects with chronic hepatitis B without cirrhosis and liver failure [chronic hepatitis B subjects without cirrhosis and liver failure (CHB); n = 33], with compensated liver cirrhosis (compensated liver cirrhosis (LC); n = 35), with acute-on-chronic liver failure [acute-on-chronic liver failure (ACLF); n = 38] or with chronic liver failure [chronic liver failure (CLF), n = 38] were applied to ClinProt magnetic beads, and bound peptides/proteins were analyzed by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry. Our classification diagnostic models of liver disease were generated based on the Genetic Algorithm (GA) and Quick Classifier Algorithm (QC). Differentially expressed peptides were found among all test groups, with patterns of difference that readily distinguished between healthy and various HBV-associated liver disease samples. The model generated seven characteristic peptide peaks at 4053 m/z, 3506 m/z, 4963 m/z, 9289 m/z, 2628 m/z, 3193 m/z and 6432 m/z, giving overall predictive capability of 54.27%. Two-way comparisons of LC, ACLF or CLF vs CHB had predictive capabilities of 79.8%, 91.41% and 97.99%, respectively. Comparisons of ACLF or CLF vs LC were predictive at 87.72% and 82.18%, respectively and ACLF vs CLF was predictive at 75.05%. These classification diagnostic models generated by different peptide peaks were further validated in blinded tests with 67-100% accuracy. Serum peptide patterns vary during progression of chronic HBV infection to liver failure and may be used to distinguish different stages of the disease.
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Han T, Chie E, Ha S. Impacts of Surgical Margin Status in Breast-conserving Surgery on Local Recurrence. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.511] [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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