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Bai J, Ji AP, Huang MW. Submental cutaneous sinus tract of mandibular second molar origin. Int Endod J 2014; 47:1185-91. [PMID: 24697494 DOI: 10.1111/iej.12266] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 02/06/2014] [Indexed: 12/01/2022]
Abstract
AIM To report a case in which a submental cutaneous sinus tract resulted from apical periodontitis associated with a mandibular second molar. SUMMARY A 53-year-old man presented with a chronic cutaneous sinus tract in the submental region, which had previously been misdiagnosed as a thyroglossal fistula. The origin of the sinus tract was shown by sinus tract angiography to be the left mandibular second molar (tooth 37), which had apical periodontitis. The sinus tract healed after extraction of the tooth and partial excision of the lesion from an extraoral approach. Histological examination confirmed that the tract was lined with granulation tissue and not with epithelial tissue. A submental sinus tract drainage pathway was observed. Prompt dental evaluation, especially of all mandibular teeth, should be considered when assessing cases of submental cutaneous sinus tracts. KEY LEARNING POINTS An odontogenic origin should be part of the differential diagnosis for orofacial skin lesions. Cutaneous sinus tracts of mandibular molar origin are complex and thus a comprehensive examination should be stressed. It is necessary to examine all mandibular teeth in cases of odontogenic submental cutaneous sinus tracts. Sinus tract angiography can be used to identify the sinus tract pathway and to confirm the associated teeth. The treatment of an odontogenic cutaneous sinus tract requires the elimination of the source of infection.
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Agga GE, Scott HM, Amachawadi RG, Nagaraja TG, Vinasco J, Bai J, Norby B, Renter DG, Dritz SS, Nelssen JL, Tokach MD. Effects of chlortetracycline and copper supplementation on antimicrobial resistance of fecal Escherichia coli from weaned pigs. Prev Vet Med 2014; 114:231-46. [PMID: 24655578 DOI: 10.1016/j.prevetmed.2014.02.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/28/2014] [Accepted: 02/22/2014] [Indexed: 11/26/2022]
Abstract
Feed-grade chlortetracycline (CTC) and copper are both widely utilized in U.S. pig production. Cluster randomized experiment was conducted to evaluate the effects of CTC and copper supplementation in weaned pigs on antimicrobial resistance (AMR) among fecal Escherichia coli. Four treatment groups: control, copper, CTC, or copper plus CTC were randomly allocated to 32 pens with five pigs per pen. Fecal samples were collected weekly from three pigs per pen for six weeks. Two E. coli isolates per fecal sample were tested for phenotypic and genotypic resistance against antibiotics and copper. Data were analyzed with multilevel mixed effects logistic regression, multivariate probit analysis and discrete time survival analysis. CTC-supplementation was significantly (99% [95% CI=98-100%]) associated with increased tetracycline resistance compared to the control group (95% [95% CI=94-97%]). Copper supplementation was associated with decreased resistance to most of the antibiotics tested, including cephalosporins, over the treatment period. Overall, 91% of the E. coli isolates were multidrug resistant (MDR) (resistant to ≥3 antimicrobial classes). tetA and blaCMY-2 genes were positively associated (P<0.05) with MDR categorization, while tetB and pcoD were negatively associated with MDR. tetA and blaCMY-2 were positively associated with each other and in turn, these were negatively associated with both tetB and pcoD genes; which were also positively associated with one another. Copper minimum inhibitory concentration was not affected by copper supplementation or by pcoD gene carriage. CTC supplementation was significantly associated with increased susceptibilities of E. coli to copper (HR=7 [95% CI=2.5-19.5]) during treatment period. In conclusion, E. coli isolates from the nursery pigs exhibited high levels of antibiotic resistance, with diverse multi-resistant phenotypic profiles. The roles of copper supplementation in pig production, and pco-mediated copper resistance among E. coli in particular, need to be further explored since a strong negative association of pco with both tetA and blaCMY-2 points to opportunities for selecting a more innocuous resistance profile.
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178
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Jacob ME, Bai J, Renter DG, Rogers AT, Shi X, Nagaraja TG. Comparing real-time and conventional PCR to culture-based methods for detecting and quantifying Escherichia coli O157 in cattle feces. J Food Prot 2014; 77:314-9. [PMID: 24490927 DOI: 10.4315/0362-028x.jfp-13-304] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Detection of Escherichia coli O157 in cattle feces has traditionally used culture-based methods; PCR-based methods have been suggested as an alternative. We aimed to determine if multiplex real-time (mq) or conventional PCR methods could reliably detect cattle naturally shedding high (≥10(4) CFU/g of feces) and low (∼10(2) CFU/g of feces) concentrations of E. coli O157. Feces were collected from pens of feedlot cattle and evaluated for E. coli O157 by culture methods. Samples were categorized as (i) high shedders, (ii) immunomagnetic separation (IMS) positive after enrichment, or (iii) culture negative. DNA was extracted pre- and postenrichment from 100 fecal samples from each category (high shedder, IMS positive, culture negative) and subjected to mqPCR and conventional PCR assays based on detecting three genes, rfbE, stx1, and stx2. In feces from cattle determined to be E. coli O157 high shedders by culture, 37% were positive by mqPCR prior to enrichment; 85% of samples were positive after enrichment. In IMS-positive samples, 4% were positive by mqPCR prior to enrichment, while 43% were positive after enrichment. In culture-negative feces, 7% were positive by mqPCR prior to enrichment, and 40% were positive after enrichment. The proportion of high shedder-positive and culture-positive (high shedder and IMS) samples were significantly different from mqPCR-positive samples before and after enrichment (P < 0.01). Similar results were observed for conventional PCR. Our data suggest that mqPCR and conventional PCR are most useful in identifying high shedder animals and may not be an appropriate substitute to culture-based methods for detection of E. coli O157 in cattle feces.
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179
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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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180
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Li P, Lu Y, Du S, Bai J, Liu H, Guo Q, Guo Y. Extraction and Purification of Flavonoids from Radix Puerariae. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v12i6.9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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181
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Blot K, Kimura SI, Bai J, Kemp A, Manahan-Vaughan D, Giros B, Tzavara E, Otani S. Modulation of Hippocampus-Prefrontal Cortex Synaptic Transmission and Disruption of Executive Cognitive Functions by MK-801. Cereb Cortex 2013; 25:1348-61. [DOI: 10.1093/cercor/bht329] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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182
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Hou P, Zhao L, Li Y, Luo F, Wang S, Song J, Bai J. Comparative expression of thioredoxin-1 in uterine leiomyomas and myometrium. Mol Hum Reprod 2013; 20:148-54. [DOI: 10.1093/molehr/gat069] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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183
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Wang S, He MF, Chen YH, Wang MY, Yu XM, Bai J, Zhu HY, Wang YY, Zhao H, Mei Q, Nie J, Ma J, Wang JF, Wen Q, Ma L, Wang Y, Wang XN. Rapid reuptake of granzyme B leads to emperitosis: an apoptotic cell-in-cell death of immune killer cells inside tumor cells. Cell Death Dis 2013; 4:e856. [PMID: 24113190 PMCID: PMC3824662 DOI: 10.1038/cddis.2013.352] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/07/2013] [Accepted: 08/05/2013] [Indexed: 01/17/2023]
Abstract
A cell-in-cell process refers to the invasion of one living cell into another homotypic or heterotypic cell. Different from non-apoptotic death processes of internalized cells termed entosis or cannibalism, we previously reported an apoptotic cell-in-cell death occurring during heterotypic cell-in-cell formation. In this study, we further demonstrated that the apoptotic cell-in-cell death occurred only in internalized immune killer cells expressing granzyme B (GzmB). Vacuole wrapping around the internalized cells inside the target cells was the common hallmark during the early stage of all cell-in-cell processes, which resulted in the accumulation of reactive oxygen species and subsequent mitochondrial injury of encapsulated killer or non-cytotoxic immune cells. However, internalized killer cells mediated rapid bubbling of the vacuoles with the subsequent degranulation of GzmB inside the vacuole of the target cells and underwent the reuptake of GzmB by killer cells themselves. The confinement of GzmB inside the vacuole surpassed the lysosome-mediated cell death occurring in heterotypic or homotypic entosis processes, resulting in a GzmB-triggered caspase-dependent apoptotic cell-in-cell death of internalized killer cells. On the contrary, internalized killer cells from GzmB-deficient mice underwent a typical non-apoptotic entotic cell-in-cell death similar to that of non-cytotoxic immune cells or tumor cells. Our results thus demonstrated the critical involvement of immune cells with cytotoxic property in apoptotic cell-in-cell death, which we termed as emperitosis taken from emperipolesis and apoptosis. Whereas entosis or cannibalism may serve as a feed-on mechanism to exacerbate and nourish tumor cells, emperitosis of immune killer cells inside tumor cells may serve as an in-cell danger sensation model to prevent the killing of target cells from inside, implying a unique mechanism for tumor cells to escape from immune surveillance.
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184
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Li H, Bai J, Abu Hejle T, Wu X, Bhatia S, Kim Y. Automated Cosegmentation of Tumor Volume and Metabolic Activity Using PET-CT in Non-Small Cell Lung Cancer (NSCLC). Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1396] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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185
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Smith R, Liu B, Bai J, Wang T. Hybrid III-nitride/organic semiconductor nanostructure with high efficiency nonradiative energy transfer for white light emitters. NANO LETTERS 2013; 13:3042-3047. [PMID: 23795609 DOI: 10.1021/nl400597d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A novel hybrid inorganic/organic semiconductor nanostructure has been developed, leading to very efficient nonradiative resonant-energy-transfer (RET) between blue emitting InGaN/GaN multiple quantum wells (MQWs) and a yellow light emitting polymer. The utilization of InGaN/GaN nanorod arrays allows for both higher optical performance of InGaN blue emission and a minimized separation between the InGaN/GaN MQWs and the emitting polymer as a color conversion medium. A significant reduction in decay lifetime of the excitons in the InGaN/GaN MQWs of the hybrid structure has been observed as a result of the nonradiative RET from the nitride emitter to the yellow polymer. A detailed calculation has demonstrated that the efficiency of the nonradiative RET is as high as 73%. The hybrid structure exhibits an extremely fast nonradiative RET with a rate of 0.76 ns(-1), approximately three times higher than the InGaN/GaN MQW nonradiative decay rate of 0.26 ns(-1). It means that the RET dominates the nonradiative processes in the nitride quantum well structure, which can further enhance the overall device performance.
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186
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Bai J, Dong L, Song Z, Ge H, Cai X, Wang G, Liu P. The role of melatonin as an antioxidant in human lens epithelial cells. Free Radic Res 2013; 47:635-42. [DOI: 10.3109/10715762.2013.808743] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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187
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Paddock ZD, Bai J, Shi X, Renter DG, Nagaraja TG. Detection of Escherichia coli O104 in the feces of feedlot cattle by a multiplex PCR assay designed to target major genetic traits of the virulent hybrid strain responsible for the 2011 German outbreak. Appl Environ Microbiol 2013; 79:3522-5. [PMID: 23542615 PMCID: PMC3648041 DOI: 10.1128/aem.00246-13] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 03/22/2013] [Indexed: 01/22/2023] Open
Abstract
A multiplex PCR was designed to detect Escherichia coli O104:H4, a hybrid pathotype of Shiga toxigenic and enteroaggregative E. coli, in cattle feces. A total of 248 fecal samples were tested, and 20.6% were positive for serogroup O104. The O104 isolates did not carry genes characteristic of the virulent hybrid strain.
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Bai J, Yong HM, Chen FF, Mei PJ, Liu H, Li C, Pan ZQ, Wu YP, Zheng JN. Cullin1 is a novel marker of poor prognosis and a potential therapeutic target in human breast cancer. Ann Oncol 2013; 24:2016-22. [PMID: 23592700 DOI: 10.1093/annonc/mdt147] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND To investigate the role of Cullin1 (Cul1) in the development of breast cancer, we examined the expression of Cul1 in breast cancer tissues and analyzed the correlation between Cul1 expression and clinicopathologic variables and patients survival. PATIENTS AND METHODS We evaluated the Cul1 expression by immunohistochemistry using a tissue microarray (TMA) which includes 393 breast cancer tissues. We also studied the role of Cul1 in breast cancer cell proliferation, migration and invasion by carrying out CCK8 cell proliferation assay, cell migration and invasion assay. RESULTS The Cul1 expression was significantly correlated with breast cancer histology grade (P = 0.000), estrogen receptor status (P = 0.001), progesterone receptor status (P = 0.001) and human epidermal growth factor receptor 2 status (P = 0.002). Furthermore, we showed a strong correlation between high Cul1 expression and worse 5-year overall and disease-specific survival rates in breast cancer patients (P = 0.026 and P = 0.015, respectively). Finally, we found that Cul1 knockdown inhibits cell proliferation, migration and invasion abilities. CONCLUSIONS Cul1 overexpression is significantly correlated with breast cancer progression and predicts worse survival. Cul1 regulates breast cancer cell proliferation, migration and invasion.
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189
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Bai S, Wu A, Ding X, Lei Y, Bai J, Zhang K, Chio J. Effects of probiotic-supplemented diets on growth performance and intestinal immune characteristics of broiler chickens. Poult Sci 2013; 92:663-70. [DOI: 10.3382/ps.2012-02813] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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190
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Jiang F, He M, Liu YJ, Wang ZB, Zhang L, Bai J. High intensity focused ultrasound ablation of goat liver in vivo: Pathologic changes of portal vein and the "heat-sink" effect. ULTRASONICS 2013; 53:77-83. [PMID: 22583752 DOI: 10.1016/j.ultras.2012.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 04/08/2012] [Accepted: 04/08/2012] [Indexed: 05/31/2023]
Abstract
The purpose of this study was to evaluate pathological changes of the portal vein (PV) and the effects on main branches of the hepatic PV during HIFU (high-intensity focused ultrasound) sonication when liver tissue adjacent to the main branches of hepatic PV was ablated. Normal liver tissue at 0mm, 5mm, 10mm away from the hepatic portal vein in 50 healthy goats was ablated with magnetic resonance image-guided HIFU (MRgHIFU). MRI showed a non-perfusion region at the target area but did not show any significant changes of the PV immediately after HIFU. The histological examination 1 day after HIFU showed coagulative necrosis at the target area, revealed deep-dyed swelling collagen (CS) fibers and vessel wall fracture (VWF) in the PV adjacent to the target area; however, no CS or VWF was observed in the PV 1 week after HIFU ablation. The energy required to ablate the foci at 0mm was 21% more than that at 10mm from the PV (p<0.05); the energy needed to ablate foci 5mm away from the PV was 10% more than that at 10mm from the PV (p<0.05). We concluded that minor injury of the hepatic portal vein may occur when ablating the adjacent liver tissue, and the acoustic energy deposition is related to the distance to the portal vein.
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191
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Ma XY, Jin Y, Sun HM, Yu L, Bai J, Chen F, Fu SB. CXCL12 G801A polymorphism contributes to cancer susceptibility: a meta-analysis. Cell Mol Biol (Noisy-le-grand) 2012; 58 Suppl:OL1702-OL1708. [PMID: 22762525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 06/23/2012] [Indexed: 06/01/2023]
Abstract
CXCL12 is an important alpha-chemokine that regulates many essential biological processes including tumor development and metastasis. The CXCL12 G801A polymorphism is associated with multiple kinds of malignant cancer, but the associations are inconsistent. To derive a more precise estimation of the relationship, we conducted a meta-analysis of 16 publications with 2,888 cases and 3,611 controls. We used the odds ratio (OR) corresponding to 95% confidence interval (CI) to estimate the strength of association. The increased risk of overall cancer was found in the homozygote comparison (AA vs. GG, OR=1.43, 95℅CI=1.07-1.91), the recessive model (AA vs. GG+GA, OR=1.26, 95℅CI=1.03-1.54), and the dominant model (GA+AA vs. GG, OR=1.35, 95℅CI=1.15-1.58). In the stratified analyses, the associations were significant in breast cancer, Asians and hospital-based controls. In conclusion, this meta-analysis suggests that the CXCL12 G801A polymorphism may be a risk factor of cancer, especially in the subgroups of breast cancer, Asians and hospital-based controls.
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192
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Gao FS, Bai J, Zhang XH, Zhang WJ, Guo D, Zhang S. Molecular characteristics of the SLA-2 gene from Chinese Hebao pigs. RUSS J GENET+ 2012. [DOI: 10.1134/s1022795412010073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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193
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Gao FS, Bai J, Zhang XH, Zhang WJ, Guo D, Zhang S. Molecular characteristics of the SLA-2 gene from Chinese Hebao pigs. GENETIKA 2012; 48:253-259. [PMID: 22568003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
To study the molecular characteristics of swine leukocyte antigen (SLA) class I from the Hebao pig, a rare inbreed in China, a pair of primers was designed to amplify the SLA-2 gene (SLA-2-HB) and then the molecular characteristics of the gene were analyzed by computer. After cloning, sequencing and computer analysis, four SLA-2-HB alleles were found, all of 1119 bp. Sites 3-1097 were an open reading frame encoding 364 amino acids with two sets of intra-chain disulfide bonds comprising four cysteines situated in sites 125, 188, 227 and 283. By alignment of SLA-2-HB sequences with other SLA-2 alleles in the DNA Data Bank of Japan/European Molecular Biology Laboratory/GenBank database, nine key variable amino acid sites were found in the extracellular domain of the SLA-2-HB alleles at sites 23(F), 24(I), 43(A), 44(K), 50(Q), 73(N), 95(I), 114(R) and 216(S), which could be used to differentiate other SLA-2 alleles. The amino acid identities between SLA-2-HB and other SLA-2, SLA-3 and SLA-1 alleles were 87.1-97.0%, 85.0-93.9% and 83.3- 88.6%, respectively. The phylogenetic tree of SLA-2-HB showed that it was relatively independent of the other SLA-2 genes. Furthermore, the SLA-2-HB alleles were similar to HLA-B15 and HLA-A2 functional do- mains and preserved some functional sites of HLA-A2. It was concluded that SLA-2-HB is an allele of SLA-2 and that the Hebao pig might have evolved independently in China.
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Wu C, Dai R, Bai J, Chen Y, Yu Y, Meng W, Deng Y. Effect of Elaeagnus Conferta Roxb (Elaeagnaceae) Dry Fruit on the Activities of Hepatic Alcohol Dehydrogenase and Aldehyde Dehydrogenase in Mice. TROP J PHARM RES 2011. [DOI: 10.4314/tjpr.v10i6.9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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195
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Bai J, Khaldi S, Gargala G, Baishanbo A, François A, Ballet JJ, Ducrotté P, Fioramonti J, Favennec L, Le Goff L. Effects of octreotide on jejunal hypersensitivity triggered by Cryptosporidium parvum intestinal infection in an immunocompetent suckling rat model. Neurogastroenterol Motil 2011; 23:1043-50, e499. [PMID: 21320238 DOI: 10.1111/j.1365-2982.2011.01680.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Similar to other bacterial or protozoan infections, human cryptosporidiosis may trigger postinfectious irritable bowel syndrome (IBS)-like symptoms, a condition in which enhanced visceral perception of pain during intestinal distension plays a pivotal role. In an immunocompetent suckling rat model which mimicks features of postinfectious IBS, Cryptosporidium parvum infection induces long-lasting jejunal hypersensitivity to distension in association with intestinal activated mast cell accumulation. The aim of the present study was to explore in this model whether octreotide, a somatostatin agonist analog, could prevent the development of jejunal hypersensitivity and intestinal mast cell/nerve fiber accumulation. METHODS Five-day-old Sprague-Dawley rats were infected with C. parvum and treated 10 days later with octreotide (50 g kg(-1) day(-1), i.p.) for 7 days. KEY RESULTS Compared with untreated infected rats, octreotide treatment of infected rats resulted in increased weight gain [day 23 postinfection (PI)], decreased food intake (day 16 PI), and a reduction in jejunal villus alterations (day 14 PI), CD3(+) IEL (day 37 PI) and mast cell (days 37 and 50 PI) accumulations, nerve fiber densities (day 50 PI), and hypersensitivity to distension (day 120 PI). In uninfected rats, the effects of octreotide treatment were limited to higher weight gain (days 16 and 23 PI) and decreased food intake (day 23 PI) compared with uninfected-untreated rats. CONCLUSIONS & INFERENCES Data confirms the relevance of the present rat model to postinfectious IBS studies and prompt further investigation of somatostatin-dependent regulatory interactions in cryptosporidiosis.
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Li L, Luo G, Chen X, Li Y, Xu G, Xu H, Bai J. Modelling evapotranspiration in a Central Asian desert ecosystem. Ecol Modell 2011. [DOI: 10.1016/j.ecolmodel.2011.09.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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197
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Bai J, Zeng X, Koga K, Tanaka H. Formation of Quasi Two-dimensional Bilayer Ice in Hydrophobic Slits: A Possible Candidate for Ice XIII? MOLECULAR SIMULATION 2011. [DOI: 10.1080/0892702031000103158] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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198
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Xu L, Li Y, Zhang X, Sun H, Sun D, Jia X, Shen C, Zhou J, Ji G, Liu P, Guan R, Yu Y, Jin Y, Bai J, Sun D, Yu J, Fu S. Deletion of
LCE3C
and
LCE3B
genes is associated with psoriasis in a northern Chinese population. Br J Dermatol 2011; 165:882-7. [DOI: 10.1111/j.1365-2133.2011.10485.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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199
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Bai J, Wang L, Weng X, He S. The efficiency of searching for Chinese character in Pseudo characters, false characters and stroke combinations. J Vis 2011. [DOI: 10.1167/11.11.1307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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200
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Zhang T, Luo Z, Wang D, Han D, Bai J, Meng X, Shen B. Radiation dose in coronary artery angiography with 320-detector row CT and its diagnostic accuracy: comparison with 64-detector row CT. Minerva Med 2011; 102:249-259. [PMID: 21959699] [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]
Abstract
AIM The aim of this study was the comparison of image quality, diagnostic accuracy and radiation dose of ECG-gated volume scan mode of 320-detector row CT with 64-detector row CT. METHODS A hundred and twenty patients receiving coronary artery CT angiography (CTA) were divided into two groups. Sixty patients in Group A underwent 64-detector row CTA; for the remainder, Group B, 320-detector row CT was used. Conventional coronary angiography was then performed in all patients. In Group B, patients with a pulse <65 beat/min underwent a prospective ECG-gated volume scan using a 70-80% R-R phase window and 1-beat, whereas a 30-80% R-R phase window, 2-beat CT was performed in patients with a pulse >65 beat/min. RESULTS In Group A, 247 vessels and 920 segments were assessed; in Group B, 242 and 906. In 320-detector row CTA, the coronary stenosis diagnosis' specificities were 98%, 96%, and 95% at the segmental, vessel, and patient levels, respectively (98%, 94%, and 92% in 64-detector row CTA); the negative predictive values were 99%, 98%, and 100% (98%, 97%, and 95% in 64-detector row CTA). There was no significant difference in specificity or negative predictive values between the groups. The average effective radiation dose in Group B was lower than in Group A (P<0.001). In Group B, the dose for 48 patients with 70-80% R-R phase window, 1-beat scan, was lower than for the remaining 12 patients (30-80% R-R phase window, 2-beat) (P<0.001). CONCLUSION The 320-detector CT reduces the radiation exposure by approximately 80% compared with 64-detector CT, with similar diagnostic accuracy and image quality.
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