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Katta J, Jin Z, Ingham E, Fisher J. Effect of nominal stress on the long term friction, deformation and wear of native and glycosaminoglycan deficient articular cartilage. Osteoarthritis Cartilage 2009; 17:662-8. [PMID: 19028431 DOI: 10.1016/j.joca.2008.10.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2008] [Accepted: 10/18/2008] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Earlier in vitro studies have shown that the coefficient of friction (COF) of cartilage decreases with increasing load at the lower end of the physiological loading spectrum. At these lower load levels, depletion of glycosaminoglycans (GAGs) from native cartilage has been shown to elevate the COF levels. The current study evaluated the long-term friction, deformation and wear of native and GAG deficient cartilage at a wide range of physiological stress levels in vitro. METHODS A pin-on-plate machine (sliding velocity: 4 mm/s and stroke length: 4 mm) was used to measure the COF of native and GAG deficient cartilage at applied contact stress levels of 0.5 MPa, 2 MPa, and 3.15 MPa in 7h long friction tests with phosphate buffered saline (PBS) lubrication. The resultant deformation and wear of the cartilage samples due to the friction tests were measured using a height vernier apparatus and lubricant analysis respectively. RESULTS AND CONCLUSIONS An increase in contact stress from 0.5 MPa to 3.15 MPa resulted in an increase in the COF and wear of native cartilage samples, due to cartilage tissue's inability to rehydrate itself completely and maintain a high fluid load support at the 4 mm stroke length under high contact stress levels. There was no effect of increasing contact stress levels on the COF and wear of GAG deficient cartilage samples due to the very high deformations observed in these samples and the smoothening of their surfaces under the higher loads, leading to the development of conforming surfaces during articulation.
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Wang K, Jin Z, Du Y, Chen J, Zhan X, Wang L, Li Z, Zou D, Liu Y. Evaluation of endoscopic-ultrasound-guided celiac ganglion irradiation with iodine-125 seeds: a pilot study in a porcine model. Endoscopy 2009; 41:346-51. [PMID: 19340740 DOI: 10.1055/s-0028-1119588] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS Implantation of iodine-125 ( (125)I) seeds under the guidance of endoscopic ultrasonography (EUS) has been proved to be a safe alternative treatment option for advanced pancreatic cancer. The main purpose of this study was to evaluate the feasibility and safety of EUS-guided radiation of the celiac ganglia with (125)I seeds in a porcine model. METHODS Twelve domestic pigs were randomly divided into three groups. The pigs in group A had blank seeds implanted, and groups B and C had 0.4 mCi and 0.8 mCi (125)I seeds implanted, respectively. Enhanced CT scan and 3-D vascular remodeling were used to check the location of the seeds. All animals were killed and celiac ganglia were checked at 14 and at 60 days after procedure. Necrosis and apoptosis in celiac ganglia and adjacent vessels and organs were also observed. RESULTS EUS-guided implantations of (125)I seeds in celiac plexus were successful at first procedure in 10 animals. The remaining two animals were implanted successfully the next day. No severe complications occurred in any animal and no damage was found in the surrounding organs. At day 60 after operation, the apoptotic index in the ganglia was 0.53 in the 0.4 mCi group and 0.94 in the 0.8 mCi group. No apoptotic cells were found in the control group implanted with blank seeds. Damage to vessels and surrounding organs by radioactive seeds was observed in only one pig at each time point. CONCLUSION EUS-guided implantation of (125)I seeds beside the celiac ganglia is a safe procedure and can induce apoptosis of local neurons. This new method may lead to an alternative treatment for pain accompanying pancreatic diseases in human.
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Yang YX, Guo J, Jin Z, Yoon SY, Choi JY, Piao XS, Wang MH, Ohh SJ, Kim BW, Chae BJ. Effects of metabolizable energy and lysine restrictions on growth performance, blood profiles, and expression of myostatin and leptin genes in broilers. CANADIAN JOURNAL OF ANIMAL SCIENCE 2009. [DOI: 10.4141/cjas08042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To investigate the effects of metabolizable energy and lysine restriction on performance, and gene expression of leptin and myostatin, three hundred twenty day-old Ross broiler chicks were randomly allotted to four treatments. Birds were subjected to their respective diets comprising two levels of ME (3200; 2880 kcal kg-1) and two levels of lysine (1.10; 0.88%) during days 8 to 21. The dietary crude protein levels were reduced with the proportion to the lysine levels, while ratios of essential amino acids relative to lysine were similar for all diets. During restriction, weight gain, breast muscle and abdominal fat yield were lower in birds fed lysine-restricted diets. Relative myostatin mRNA abundance was increased in breast muscle of lysine-restricted birds, while expression of leptin mRNA in abdominal fat was downregulated by energy and lysine restriction. During realimentation, birds previously fed with energy and/or lysine-restricted diets had comparable performance as birds fed unrestricted diets. At day 42, energy and lysine restriction increased relative myostatin mRNA expression in breast muscle and birds previously fed diet restricted in both energy and lysine had the highest relative myostatin mRNA expression (energy × lysine interaction, P < 0.001). The relative leptin mRNA abundance was significantly lower in birds previously fed energy-restricted diets. These results indicated that early energy and lysine restriction from day 8 to 21 exhibited growth compensation during realimentation. In addition, myostatin and leptin mRNA expression in breast muscle and abdominal fat were modulated by nutritional treatments and were closely associated with changes in breast muscle yield and abdominal fat deposition. Key words: Metabolizable energy, lysine, myostatin, leptin, broiler
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Ohtani H, Jin Z, Takegawa S, Nakayama T, Yoshie O. Abundant expression of CXCL9 (MIG) by stromal cells that include dendritic cells and accumulation of CXCR3+ T cells in lymphocyte-rich gastric carcinoma. J Pathol 2009; 217:21-31. [PMID: 18980207 DOI: 10.1002/path.2448] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The neoplastic environment is generally regarded as an immunosuppressive milieu. However, a group of cancers are characterized by the abundance of tumour-infiltrating lymphocytes (TILs). Here we examined the possible roles of chemokines in the formation of lymphoid stroma in lymphocyte-rich gastric carcinomas (GCs), including EBV(+) cases and conventional GCs. Regardless of EBV positivity, TILs in lymphocyte-rich GCs predominantly expressed CXCR3, while its ligand CXCL9 was abundantly expressed by stromal cells and a portion of cancer cells. CXCL9(+) stromal cells were judged to include dendritic cells, because they partly co-expressed fascin, DC-sign, CD83, DC-lamp or HLA-DR. T cells in close contact with CXCL9(+) cells showed frequent labelling of Ki-67 (approximately 10%), suggesting the immunostimulatory activity of CXCL9(+) stromal cells. The T-cell zone of the regional lymph nodes of lymphocyte-rich GCs also abounded with CXCR3(+) T cells and CXCL9(+) stromal cells. This indicated a close similarity between cancer stroma and regional lymph nodes of lymphocyte-rich GCs. Quantitative RT-PCR also confirmed the strong expression of CXCR3, CXCL9 and IFNgamma in lymphocyte-rich GCs. In contrast, conventional GCs contained less abundant CXCR3(+) T cells and few CXCL9(+) stromal cells. Collectively, the CXCL9-CXCR3 axis plays a pivotal role in the formation of lymphoid stroma in lymphocyte-rich GCs. Given similar findings in the regional lymph nodes, the lymphoid stroma of lymphocyte-rich GCs may represent a tertiary lymphoid tissue with predominantly Th1-shifted immune responses.
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Militano O, Bhatia M, Jin Z, Figurski M, Shaw L, Moore V, Morris E, Tallamy B, van de Ven C, Ayello J, Baxter-Lowe L, Satwani P, George D, Garvin J, Cairo M. Pharmacokinetics (PK) Of IV And Po Mycophenolate Mofetil (MMF) In Age Adjusted Pediatric And Adolescent Allogeneic Stem Cell Transplant (AlloSCT) Recipients: Significantly Higher CLss AND Vss IN PATIENTS <6 YEARS OF AGE. Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Satwani P, Tallamy B, Jin Z, Kohl V, Garvin J, Bhatia M, George D, Bradley B, van de Ven C, Reichman L, Morris E, Fearon N, Harrison L, Shonfeld T, Baxter-Lowe L, Schwartz J, Hawks R, Foley S, Cairo M. Reduced Intensity Conditioning (RIC) Allogeneic Stem Cell Transplantation (AlloSCT) In Children and Adolescent Recipients is Associated With Very Low Regimen Related and Non-Relapse Mortality (NRM): However, Chemonaive Patients Following Umbilical Cord Blood Transplant (UCBT) have a Higher Incidence of Primary Graft Failure (PGF). Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tullio M, Homma S, Jin Z. Aortic Atherosclerosis, Hypercoagulability, and Stroke: The APRIS (Aortic Plaque and Risk of Ischemic Stroke) Study. J Vasc Surg 2009. [DOI: 10.1016/j.jvs.2008.11.119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Xie T, Song X, Jin Z, Pan L, Weng C, Chen S, Zhang N. Interactions between stem cells and their niche in the Drosophila ovary. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 2008; 73:39-47. [PMID: 19022749 DOI: 10.1101/sqb.2008.73.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The Drosophila ovary contains at least three types of active stem cells, namely, germ-line stem cells (GSCs), escort stem cells (ESCs), and follicular stem cells (FSCs), which work together to efficiently assemble egg chambers. Among the three stem cell types, the GSC is among the first shown to be controlled by the niche due to its easy identification and welldefined surrounding cells. We have shown that the niche controls GSC self-renewal, anchorage, aging, and competition, and the GSC also signals back to the niche for its maintenance. The FSC is an attractive model for studying epithelial stem cell regulation and signal integration because we have shown that it resembles mammalian epithelial stem cells and requires multiple signaling pathways for its self-renewal. In this chapter, we have highlighted the findings of our studies on interactions between Drosophila ovarian stem cells and their niches during normal development and aging and on stem cell competition for niche occupancy. We further discuss their implications in general stem cell biology and future directions in this exciting area.
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Zhang WX, Chen B, Jin Z, Yu Z, Wang X, Chen H, Mao A, Cai W. Influence of uridine diphosphate (UDP)-glucuronosyltransferases and ABCC2 genetic polymorphisms on the pharmacokinetics of mycophenolic acid and its metabolites in Chinese renal transplant recipients. Xenobiotica 2008; 38:1422-36. [DOI: 10.1080/00498250802488585] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Jin Z, Akao N, Nobuta T, Ohta N. An Improved Method for Recovery of Muscle-Stage Larvae From Mice Infected with Toxocara canis. J Parasitol 2008; 94:1164-5. [DOI: 10.1645/ge-1522.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2007] [Accepted: 01/11/2008] [Indexed: 11/10/2022] Open
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Jin Z, Xia L, Du YP. Reduction of artifacts in susceptibility-weighted MR venography of the brain. J Magn Reson Imaging 2008; 28:327-33. [PMID: 18666154 DOI: 10.1002/jmri.21447] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
PURPOSE To reduce the off-resonance artifact in susceptibility-weighted imaging (SWI)-based MR venography (MRV) in the brain regions with severe field inhomogeneity and to reduce the signal loss in the minimum-intensity projection (mIP) display of the 3D MRV. MATERIALS AND METHODS A novel postprocessing approach was presented to map the local field gradients (LFGs) using the 3D SWI data without phase-unwrapping. LFG measurements were used to assess the severity of field inhomogeneity and suppress the residual phase in the phase mask induced by the off-resonance effect. Volume segmentation of brain tissue was used to reduce the signal loss in the peripheral regions of the brain in the through-plane mIP images and enable in-plane mIP display of MRV. RESULTS Off-resonance artifact in the brain regions with severe field inhomogeneity was effectively reduced by the LFG-based phase suppression approach. Signal loss was reduced in the through-plane mIP of MRV using volume segmentation of brain tissue prior to projection. In-plane mIP of MRV also became feasible with volume segmentation. CONCLUSION Off-resonance artifacts and signal loss in mIP display of MRV can be effectively reduced through postprocessing.
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Rose J, Chen L, Fu ZQ, Swindell II J, Zhu J, Chrzas J, Gonczy J, Fait J, Jin Z, Wang BC. Pushing the envelop of sulfur SAS structure determination at UGA/SER-CAT. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308094282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Fu ZQ, Chrzas J, Fait J, Jin Z, Howard A, Gonczy J, Rose J, Wang BC. Applying parallel computing for a faster and better structure solution. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308093021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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189
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Du YP, Jin Z. Simultaneous acquisition of MR angiography and venography (MRAV). Magn Reson Med 2008; 59:954-8. [PMID: 18429022 DOI: 10.1002/mrm.21581] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A dual-echo pulse sequence for simultaneous acquisition of MR angiography and venography (MRAV) is developed. Data acquisition of the second echo for susceptibility-weighted imaging-based MR venography is added to the conventional three-dimensional (3D) time-of-flight (TOF) MRA pulse sequence. Using this dual-echo acquisition approach, the venography data can be acquired without increasing the repetition time, and, therefore, the scan duration of routine TOF MRA scans is maintained. The feasibility of simultaneous acquisition of MRAV is presented in brain scans at different spatial resolutions. The effect of spatial resolution on vein-to-background contrast is also demonstrated. Venous contrast is improved in high-resolution (0.52 x 0.52 x 1.6 mm(3)) images compared to that in standard-resolution (0.78 x 0.78 x 1.6 mm(3)) images. This MRAV technique enables the acquisition of MR venography without the need of an extra scan or injection of contrast agent in routine clinical brain exams at 3T.
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Heo S, Yang YX, Jin Z, Park MS, Yang BK, Chae BJ. Effects of dietary energy and lysine intake during late gestation and lactation on blood metabolites, hormones, milk compositions and reproductive performance in primiparous sows. CANADIAN JOURNAL OF ANIMAL SCIENCE 2008. [DOI: 10.4141/cjas07060] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The effects of energy and lysine intake during late gestation and lactation on the reproductive performance of primiparous sows were evaluated using 36 gilts. Sows were allocated to six dietary treatments according to a 3 × 2 factorial arrangement and each treatment had six replicates. Three energy levels [low (EL), medium (EM) and high (EH)] and two lysine levels [low (LL) and high (HL)] were used. Gilts with HL intake had more weight (P = 0.004) and backfat thickness (P = 0.047) gain during gestation. Similar changes in sow body conditions were observed during lactation. HL intake resulted in higher litter birth weight (P = 0.001), weaning weight (P < 0.001) and growth rate (P < 0.001) and shortened wean-to-estrus interval (P= 0.001). Energy intake influenced the fat and lactose content while lysine intake influenced the total solids and protein content in milk and colostrum. Gilts with HL had higher insulin and lower creatinine levels during post farrowing and weaning, while triglyceride concentration at weaning increased with increasing of energy intake. The basal and pulses of LH were also influenced by lysine intake. In conclusion, higher lysine intake than those recommended by National Research Council (1998) could improve performance during late gestation and lactation in primiparous sows. Key words: Energy, lysine, gestation, lactation, sows
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Satwani P, Waxman I, Bhatia M, Jin Z, Kohl V, Baldinger L, Garvin J, George D, Bradley MB, Guerra J, Cairo MS. Preliminary results of gemtuzumab ozogamicin (GO) during myeloablative conditioning for allogeneic stem cell transplantation (AlloSCT) or following reduced intensity alloSCT (RI-AlloSCT) in children with AML. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.7038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Yang YX, Heo S, Jin Z, Yun JH, Choi JY, Yoon SY, Park MS, Yang BK, Chae BJ. Effects of lysine intake during late gestation and lactation on blood metabolites, hormones, milk composition and reproductive performance in primiparous and multiparous sows. Anim Reprod Sci 2008; 112:199-214. [PMID: 18547756 DOI: 10.1016/j.anireprosci.2008.04.031] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2007] [Revised: 04/08/2008] [Accepted: 04/17/2008] [Indexed: 11/15/2022]
Abstract
Modern genotype primiparous and multiparous sows (Yorkshire x Landrace, n=48) were used to evaluate effects of dietary lysine intake during late gestation and lactation, and their interaction on reproductive performance. Sows were randomly allotted to two gestation lysine (G, 0.6% or 0.8% lysine) treatments based on parity in a 2 x 2 factorial arrangement, and each treatment had 12 replicates comprising 1 sow. Then all the sows were assigned to two lactation lysine (L, 1.0% or 1.3% lysine) treatments within parity and gestation treatments in a 2 x 2 x 2 factorial design, and each treatment comprised six replicates with 1 sow/replicate during lactation. Feeding higher lysine level during gestation increased sow body weight and backfat thickness (P=0.001) and body condition was better (P=0.001) in multiparous than that of primiparous sows. Both of the lysine levels during lactation and parity influenced sow body condition and reproductive performance (P<0.05). Higher lysine intake during lactation increased the concentrations of total solids (P=0.024), protein (P=0.001) and solids not-fat (P=0.042) in colostrum and total solids (P=0.001), protein (P=0.001), fat (P=0.001) and solids not-fat (P=0.005) in milk. Protein concentration of milk was greater (P=0.001) in multiparous sows than that of primiparous sows. Feeding of high lysine diets resulted in an increment of plasma urea N (P=0.010; P=0.047) and a decrease of creatinine (P=0.045; P=0.002) on the day of postfarrowing and weaning, respectively. Furthermore, as lysine intake increased, the secretions of insulin, FSH, and LH were increased (P<0.05) and multiparous sows showed higher (P<0.05) concentrations of FSH and LH pulses on the day of postfarrowing and weaning, respectively. These results indicated that higher lysine intake than that recommended by NRC [NRC, 1998. Nutrient Requirements of Swine, 10th ed. National Academy Press, 458 Washington, DC] could improve sow performance during late gestation and lactation. Furthermore primiparous sows need higher lysine intake than multiparous sows. Moreover, nutritional impacts on reproduction may be mediated in part through associated effects on circulating LH concentration.
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Jin Z, Du Y, Li Z, Jiang Y, Chen J, Liu Y. Endoscopic ultrasonography-guided interstitial implantation of iodine 125-seeds combined with chemotherapy in the treatment of unresectable pancreatic carcinoma: a prospective pilot study. Endoscopy 2008; 40:314-20. [PMID: 18283622 DOI: 10.1055/s-2007-995476] [Citation(s) in RCA: 151] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND STUDY AIMS Intraoperative and transdermal ultrasonography-mediated brachytherapy has been proved to be effective in postponing the development of abdominal carcinomas. The main purpose of this study was to evaluate the clinical efficacy and safety of endoscopic ultrasonography (EUS)-guided interstitial implantation of radioactive iodine 125 seeds in advanced pancreatic cancer. PATIENTS AND METHODS In total, 22 patients with advanced pancreatic cancer and positive fine-needle aspiration results underwent EUS-guided interstitial implantation of iodine seeds. All enrolled patients received routine gemcitabine-based 5-fluorouracil chemotherapy 1 week after brachytherapy. RESULTS All 22 patients were successfully implanted with 125I seeds via EUS, with a median of 10 seeds and a maximum of 30 seeds per procedure. The median follow-up time of patients was 9.3 months, and the estimated median survival time was 9.0 months (95 % confidence interval 6.7 - 11.3 months). Partial remission was achieved in three cases (13.6 %) during the 4-week period, and disease in 10 patients (45.5 %) remained stable. Cancer finally progressed in 20 patients, all of whom died during 2 years of follow-up. Visual analog scale pain score dropped from 5.07 +/- 2.63 to 1.73 +/- 1.91 ( P< 0.01) 1 week after brachytherapy but increased again to 3.53 +/- 1.51 1 month later ( P< 0.05 vs. baseline). There were no obvious complications following therapy. CONCLUSIONS EUS-guided interstitial implantation of 125I seeds may represent a safe alternative treatment option for locally advanced pancreatic cancer. Our preliminary data suggest improvement in pain, but no long-term survival benefit.
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Jin Z, Yang YX, Choi JY, Shinde PL, Yoon SY, Hahn TW, Lim HT, Park Y, Hahm KS, Joo JW, Chae BJ. Potato (Solanum tuberosum L. cv. Gogu valley) protein as a novel antimicrobial agent in weanling pigs. J Anim Sci 2008; 86:1562-72. [PMID: 18344303 DOI: 10.2527/jas.2007-0414] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A total of 280 weaned pigs (Landrace x Yorkshire x Duroc) were used in a 28-d growth study to investigate the effect of feeding different levels of potato proteins on growth performance, nutrient digestibility, immune response, small intestinal morphology, and bacterial populations in feces and large intestine. Pigs (initially 6.42 +/- 0.74 kg of BW and 23 +/- 3 d of age) were randomly allotted to 5 treatments on the basis of BW, each treatment composed of 4 pens, each pen having 14 pigs. Dietary treatments included positive control (PC; basal diet + 150 mg/kg apramycin and 10 mg/ kg colistin sulfate); and potato protein (PP), consisting of the basal diet with 0, 0.25, 0.50, or 0.75% of potato protein. Diets were fed in 2 phases: phase I (d 0 to 14 postweaning) and phase 2 (d 14 to 28 postweaning). Potato protein was extracted from a value-added type of the new potato variety, Solanum tuberosum L. cv. Gogu valley, and was shown to have a minimum inhibitory concentration of 300 to 500 mug/mL. Performance of PC was compared with 0.25 to 0.75% PP, whereas linear and quadratic trends of increasing PP (0 to 0.75% PP) were tested. Over the 28-d trial, pigs fed the PC diets showed improved overall ADG (P < 0.05) and G:F (P = 0.090) compared with pigs fed PP, whereas increasing levels of PP linearly improved ADG (P < 0.05), ADFI (P = 0.052), and G:F (P = 0.098). The digestibility of DM and CP in both the phases was greater in PC than PP, and feeding of PP linearly improved the DM digestibility (P < 0.05) in phase II. The bacterial populations in the feces of pigs fed PC and PP were comparable, except for total bacteria and coliform bacteria in the feces at d 14 and 28, which were decreased in PC; and feeding of PP was effective in linearly reducing the populations of microbes in feces and contents of cecum, colon, and rectum. There was linear increase (P < 0.10) in skin-fold thickness in response to phytohemagglutinin with an increase in PP levels. Haemagglutinin titers on d 21 were greater (P = 0.054) in PC, and at d 28 the haemagglutinin titers were quadratically affected in pigs fed PP (P = 0.070). There was a trend toward a decrease in crypt depth (P = 0.068) and a greater villus height:crypt depth ratio (P = 0.082) of ileum in PC compared with PP. These results suggest that PP may be an alternative to medicated feed with antibiotics because it showed antimicrobial activity by effectively reducing the population of coliform bacteria and also improved the performance of weanling pigs.
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Yang YX, Jin Z, Yoon SY, Choi JY, Shinde PL, Piao XS, Kim BW, Ohh SJ, Chae BJ. Lysine restriction during grower phase on growth performance, blood metabolites, carcass traits and pork quality in grower finisher pigs. ACTA AGR SCAND A-AN 2008. [DOI: 10.1080/09064700801959908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hu X, Li T, Bi S, Jin Z, Zhou G, Bai C, Li L, Cui Q, Liu W. Possible role of hydrogen sulfide on the preservation of donor rat hearts. Transplant Proc 2008; 39:3024-9. [PMID: 18089314 DOI: 10.1016/j.transproceed.2007.05.086] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2007] [Accepted: 05/23/2007] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of this study was to observe the preservative effect of hydrogen sulfide (H2S) on donor rat hearts. MATERIALS AND METHODS The hearts of 24 Sprague-Dawley rats were perfused on a Langendorff perfusion column for 30 minutes. We calculated and recorded the left ventricular-developed pressure (LVDP), and positive and negative derivatives of left ventricular systolic pressure (LVSP; +dP/dt and -dP/dt). Hearts were then arrested and stored for 6 hours at 4 degrees C: group 1, Krebs-Henseleit (KH) solution; group 2, KH solution with 1 micromol/L NaHS; group 3, KH solution with 1 micromol/L NaHS and 10 micromol/L glibenclamide; group 4, St. Thomas II solution. Hearts were transferred back to the Langendorff column. After stabilizing for 30 minutes, LV performance was assessed as before. The donor hearts were kept for pathological study including myocardial water ratio, ATP content, and myocyte apoptosis index. RESULTS The recovery rates of +dp/dtmax, -dp/dtmax, and LVDP of groups 2 and 4 were much better than those of groups 1 and 3. The hearts contracted immediately after reperfusion in group 4. Ventricular fibrillation was seen before contraction in the other 3 groups, with the longest duration in group. No significant difference in myocardial water ratio was found. The ATP content was the highest in group 2. Apoptosis was observed in the 4 groups with the lowest apoptosis index in group 2. CONCLUSIONS H2S has a protective effect on rat donor hearts at the concentration of 1 micromol/L. The protective effect is better than that of St. Thomas II solution. The protective effect of H2S can be blocked by glibenclamide.
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Jin Z, Ran M, Man Z. Arsenic trioxide entered cerebrospinal fluid with the help of mannitol overwhelm the meningeal relapse of acute promyelocytic leukemia. Haematologica 2008; 92:e82-4. [PMID: 17768137 DOI: 10.3324/haematol.11826] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Jin Z, Yang Y, Choi J, Shinde P, Yoon S, Hahn TW, Lim H, Park Y, Hahm K, Joo J, Chae B. Effects of potato (Solanum tuberosum L. cv. Golden valley) protein having antimicrobial activity on the growth performance, and intestinal microflora and morphology in weanling pigs. Anim Feed Sci Technol 2008. [DOI: 10.1016/j.anifeedsci.2007.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Li YT, Xu MH, Yuan XH, Wang WM, Chen M, Zheng ZY, Sheng ZM, Yu QZ, Zhang Y, Liu F, Jin Z, Wang ZH, Wei ZY, Zhao W, Zhang J. Effect of target shape on fast electron emission in femtosecond laser-plasma interactions. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2008; 77:016406. [PMID: 18351943 DOI: 10.1103/physreve.77.016406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2007] [Revised: 11/06/2007] [Indexed: 05/26/2023]
Abstract
Fast electron emission from the interaction of femtosecond laser pulses with shaped solid targets has been studied. It is found that the angular distributions of the forward fast electrons are highly dependent upon the target shapes. The important roles played by the electrostatic fields built up at the non-laser-irradiated target surfaces and the collisions in the target are identified. Our two-dimensional particle-in-cell simulations with binary collisions included reproduce the main experimental observations.
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