%0 Journal Article %~ PubMed %A Tian, Xinrui %A Zhang, Jianlin %A Tan, Thian Kui %A Lyons, J Guy %A Zhao, Hong %A Niu, Bo %A Lee, So Ra %A Tsatralis, Tania %A Zhao, Ye %A Wang, Ya %A Cao, Qi %A Wang, Changqi %A Wang, Yiping %A Lee, Vincent W S %A Kahn, Michael %A Zheng, Guoping %A Harris, David C H %T Association of β-catenin with P-Smad3 but not LEF-1 dissociates in vitro profibrotic from anti-inflammatory effects of TGF-β1. %B Journal of Cell Science %D 2013 %C United Kingdom %I The Company of Biologists Ltd. %V 126 %N Pt 1 %P 67-76 %@ 1477-9137 %X %Z FOR Codes: 601 %0 Journal Article %~ PubMed %A Wang, Ya %A Wang, Yuan Min %A Wang, Yiping %A Zheng, Guoping %A Zhang, Geoff Yu %A Zhou, Jimmy Jianheng %A Tan, Thian Kui %A Cao, Qi %A Hu, Min %A Watson, Debbie %A Wu, Huiling %A Zheng, Dong %A Wang, Changqi %A Lahoud, Mireille H %A Caminschi, Irina %A Harris, David C %A Alexander, Stephen I %T DNA vaccine encoding CD40 targeted to dendritic cells in situ prevents the development of Heymann nephritis in rats. %B Kidney International %D 2013 %C United Kingdom, United States %I Nature Publishing Group %V 83 %N 2 %P 223-232 %@ 0085-2538 %X %Z FOR Codes: 110703 %0 Journal Article %~ PubMed %A Wang, Yuan Min %A Zhang, Geoff Yu %A Hu, Min %A Polhill, Tania %A Sawyer, Andrew %A Zhou, Jimmy Jianheng %A Saito, Mitsuru %A Watson, Debbie %A Wu, Huiling %A Wang, Ya %A Wang, Xin Maggie %A Wang, Yiping %A Harris, David C H %A Alexander, Stephen I %T CD8+ Regulatory T Cells Induced by T Cell Vaccination Protect Against Autoimmune Nephritis. %B Journal of the American Society of Nephrology %D 2012 %C United States %I Ovid %V 23 %N 6 %P 1058-1067 %@ 1533-3450 %X Autoreactive T cells play a pivotal role in the pathogenesis of autoimmune kidney disease. T cell vaccination (TCV) may limit autoimmune disease and induce CD8+ regulatory T cells (Tregs). We used Heymann nephritis (HN), a rat model of human membranous nephritis, to study the effects of TCV on autoimmune kidney disease. We harvested CD4+ T cells from renal tubular antigen (Fx1A) -immunized rats and activated these cells in vitro to express the MHC Class Ib molecule Qa-1. Vaccination of Lewis rats with these autoreactive Fx1A-induced T cells protected against HN, whereas control-primed T cells did not. Rats that underwent TCV had lower levels of proteinuria and serum creatinine and significantly less glomerulosclerosis, tubular damage, and interstitial infiltrates. Furthermore, these rats expressed less IFN-?? and IL-6 in splenocytes, whereas the numbers of Tregs and the expression of Foxp3 were unchanged. In vitro cytotoxicity assays showed CD8+ T cell-mediated elimination of Qa-1-expressing CD4+ T cells. In vivo, TCV abrogated the increase in Qa-1-expressing CXCR5+ TFH cells observed in HN compared with controls. Taken together, these results suggest that TCV protects against autoimmune kidney disease by targeting Qa-1-expressing autoreactive CD4+ cells. %Z FOR Codes: 110703 %0 Journal Article %~ PubMed %A Zhou, Jimmy Jianheng %A Wang, Yuan Min %A Lee, Vincent Ws %A Phoon, Richard Ks %A Zhang, Geoff Yu %A Wang, Ya %A Tan, Thian Kui %A Hu, Min %A Wang, Lucy Dongwei %A Saito, Mitsuru %A Sawyer, Andrew %A Harris, David C H %A Alexander, Stephen I %A Durkan, Anne M %T DEC205-DC targeted DNA vaccines to CX3CR1 and CCL2 are potent and limit macrophage migration. %B International Journal of Clinical and Experimental Medicine %D 2012 %C United States %I E-Century Publishing Corporation %V 5 %N 1 %P 24-33 %@ 1940-5901 %X Monocytes utilise a variety of chemokines to traffic to atherosclerotic plaques. CX3C chemokine ligand 1 (CX3CL1 & Fractalkine) and its receptor CX3CR1 and monocyte chemoattractant protein 1 (CCL2) have been identified as chemokines/receptors that have an important role in the migration and recruitment of monocytes during the pathogenesis of several inflammatory diseases including atherosclerosis. DNA vectors containing single chain variable region fragment (scFv) for DC-targeted receptor DEC205 were cloned with mouse CX3CR1 and CCL2 genes respectively, and vaccinated into C57/BL6 mice weekly for 3 weeks. Induced anti-CX3CR1 and anti-CCL2 in vaccinated mice was examined by ELISA and Western Blot analysis, while the cellular response was examined by ELISPOT. The inhibition of chemotaxis of J774 macrophages to Py-4-1 endothelial cells was examined by in vitro transwell migration assay using serum collected from vaccinated mice. All vaccinated mice generated anti-CX3CR1 and anti-CCL2 Ab and cellular response by 8 weeks after DNA vaccination. Macrophage migration towards TNF-? activated endothelial cells was significantly inhibited by serum containing both anti-CX3CR1 or anti-CCL2 Ab from vaccinated mice. These results demonstrate that DC-targeting of DNA vaccines to self-antigens generates functional immune responses which can inhibit specific key chemotactic targets. This suggests a potential therapeutic role for chemokine/receptor DNA vaccination in atherosclerosis, where chemotaxis has a pivotal role in the inflammatory process. %Z FOR Codes: 110704 111601 110705 %0 Journal Article %~ PubMed %A Johnson, David W %A Wong, Muh Geot %A Cooper, Bruce A %A Branley, Pauline %A Bulfone, Liliana %A Collins, John F %A Craig, Jonathan C %A Fraenkel, Margaret B %A Harris, Anthony %A Kesselhut, Joan %A Li, Jing Jing %A Luxton, Grant %A Pilmore, Andrew %A Tiller, David J %A Harris, David C %A Pollock, Carol A %T Effect of timing of dialysis commencement on clinical outcomes of patients with planned initiation of peritoneal dialysis in the ideal trial. %B Peritoneal Dialysis International %D 2012 %C Canada %I Multimed, Inc. %V 32 %N 6 %P 595-604 %@ 1718-4304 %X %Z FOR Codes: 110312 %0 Journal Article %~ PubMed %A Polhill, Tania %A Zhang, Geoff Yu %A Hu, Min %A Sawyer, Andrew %A Zhou, Jimmy Jianheng %A Saito, Mitsuru %A Webster, Kylie E %A Wang, Ya %A Wang, Yiping %A Grey, Shane T %A Sprent, Jonathan %A Harris, David C H %A Alexander, Stephen I %A Wang, Yuan Min %T IL-2/IL-2Ab Complexes Induce Regulatory T Cell Expansion and Protect against Proteinuric CKD. %B Journal of the American Society of Nephrology %D 2012 %C United States %I Ovid %V 23 %N 8 %P 1303-1308 %@ 1533-3450 %X Regulatory T cells (Tregs) help protect against autoimmune renal injury. The use of agonist antibodies and antibody/cytokine combinations to expand Tregs in vivo may have therapeutic potential for renal disease. Here, we investigated the effects of administering IL-2/IL-2Ab complexes in mice with adriamycin nephropathy, a model of proteinuric kidney disease that resembles human focal segmental glomerulosclerosis. Injecting IL-2/IL-2Ab complexes before or, to a lesser extent, after induction of disease promoted expansion of Tregs. Furthermore, administration of this complex was renoprotective, evidenced by improved renal function, maintenance of body weight, less histologic injury, and reduced inflammation. IL-2/IL-2Ab reduced serum IL-6 and renal expression of IL-6 and IL-17 but enhanced expression of IL-10 and Foxp3 in the spleen. In vitro, the addition of IL-2/IL-2Ab complexes induced rapid STAT-5 phosphorylation in CD4 T cells. In summary, these data suggest that inducing the expansion of Tregs by administering IL-2/IL-2Ab complexes is a possible strategy to treat renal disease. %Z FOR Codes: 110703 %0 Journal Article %~ PubMed %A Zheng, Dong %A Cao, Qi %A Lee, Vincent W S %A Wang, Ya %A Zheng, Guoping %A Wang, Yuanmin %A Tan, Thian Kui %A Wang, Changqi %A Alexander, Stephen I %A Harris, David C H %A Wang, Yiping %T Lipopolysaccharide-pretreated plasmacytoid dendritic cells ameliorate experimental chronic kidney disease. %B Kidney International %D 2012 %C United Kingdom, United States %I Nature Publishing Group %V 81 %N 9 %P 892-902 %@ 0085-2538 %X Plasmacytoid dendritic cells play important roles in inducing immune tolerance, preventing allograft rejection, and regulating immune responses in both autoimmune disease and graft-versus-host disease. In order to evaluate a possible protective effect of plasmacytoid dendritic cells against renal inflammation and injury, we purified these cells from mouse spleens and adoptively transferred lipopolysaccharide (LPS)-treated cells, modified ex vivo, into mice with adriamycin nephropathy. These LPS-treated cells localized to the kidney cortex and the lymph nodes draining the kidney, and protected the kidney from injury during adriamycin nephropathy. Glomerulosclerosis, tubular atrophy, interstitial expansion, proteinuria, and creatinine clearance were significantly reduced in mice with adriamycin nephropathy subsequently treated with LPS-activated plasmacytoid dendritic cells as compared to the kidney injury in mice given naive plasmacytoid dendritic cells. In addition, LPS-pretreated cells, but not naive plasmacytoid dendritic cells, convert CD4+CD25- T cells into Foxp3+ regulatory T cells and suppress the proinflammatory cytokine production of endogenous renal macrophages. This may explain their ability to protect against renal injury in adriamycin nephropathy.Kidney International advance online publication, 8 February 2012; doi:10.1038/ki.2011.471. %Z FOR Codes: 110704 111601 110707 %0 Book Section %A Zheng, Guoping %A Zhang, Jianlin %A Tan, Thian Kui %A Hsu, Tzu-Ting %A Tian, Xinrui %A Niu, Bo %A Harris, David %T Matrix Metalloproteinases (MMPs) in Renal Fibrosis %B Matrix Metalloproteinases: Biology, Functions and Clinical Implications %D 2012 %C United States %I Nova Science Publishers %V %N %P 171-188 %@ 9781621007890 %X %Z FOR Codes: 110106 %0 Journal Article %~ PubMed %A Wang, Yuan Min %A McRae, Jennifer L %A Robson, Simon C %A Cowan, Peter J %A Zhang, Geoff Yu %A Hu, Min %A Polhill, Tania %A Wang, Yiping %A Zheng, Guoping %A Wang, Ya %A Lee, Vincent W S %A Unwin, Robert J %A Harris, David C H %A Dwyer, Karen M %A Alexander, Stephen I %T Regulatory T cells participate in CD39-mediated protection from renal injury. %B European Journal of Immunology %D 2012 %C Germany %I Wiley - VCH Verlag GmbH & Co. KGaA %V 42 %N 9 %P 2441-2451 %@ 0014-2980 %X CD39 is an ecto-enzyme that degrades extracellular nucleotides, such as ATP, and is highly expressed on by the vasculature and circulating cells including Foxp3+ regulatory T (Treg) cells. To study the role of purinergic regulation in renal disease, we used the adriamycin nephropathy (AN) mouse model of chronic renal injury, using human CD39-transgenic (hCD39Tg) and wild-type (WT) BALB/c mice. Effects of CD39 expression by Treg cells were assessed in AN by adoptive transfer of CD4+CD25+ and CD4+CD25- T cells isolated from hCD39Tg and WT. hCD39Tg mice were protected from renal injury in AN with decreased urinary protein and serum creatinine, and significantly less renal injury compared with WT. While WT CD25+ and hCD39Tg CD25- T cells conferred some protection against AN, hCD39Tg CD25+ Treg cells offered greater protection. In vitro studies showed direct pro-apoptotic effects of ATP on renal tubular cells. In conclusion, hCD39 expressed by circulating leukocytes and intrinsic renal cells limits innate AN injury. Specifically CD39 expression by Treg cells contributes to its protective role in renal injury. These findings suggest that extracellular nucleotides mediate AN kidney injury and that CD39, expressed by Treg cells and other cells, is protective in this model. %Z FOR Codes: 110703 %0 Journal Article %~ PubMed %A Myint, Thida M M %A Cooper, Bruce A %A Pollock, Carol A %A Harris, David C H %T Starting Dialysis Early: No Survival, Quality of Life, or Cost Advantages. %B Seminars in Dialysis %D 2012 %C United States %I Wiley-Blackwell Publishing, Inc. %V 25 %N 5 %P 522-523 %@ 1525-139X %X %Z FOR Codes: 110312 %0 Journal Article %A Harris, David %A Dupuis, Sophie %A Couser, William G %A Feehally, John %T Training nephrologists from developing countries: does it have a positive impact? %B Kidney International Supplements %D 2012 %C United States %I Nature Publishing Group %V 2 %N %P 275-278 %@ 2157-1724 %X %Z FOR Codes: 130209 110312 %0 Journal Article %~ PubMed %A Pollock, Carol A %A Cooper, Bruce A %A Harris, David C %T When should we commence dialysis? The story of a lingering problem and today's scene after the IDEAL study. %B Nephrology, Dialysis, Transplantation %D 2012 %C United Kingdom %I Oxford University Press %V 27 %N 6 %P 2162-2166 %@ 1460-2385 %X Over the last 15-20 years, there has been an increasing trend for dialysis to be commenced earlier in the development of chronic kidney disease (CKD). The drivers for initiation of dialysis at higher levels of renal function are complex but were primarily based on the assumption that by improving solute and water clearances with earlier dialysis, morbidity, mortality and quality of life would be improved. The Initiating Dialysis Early and Late (IDEAL) trial definitively demonstrated that elective earlier initiation of dialysis was not associated with improved clinical outcomes or quality of life. Indeed, no subset of patients was found to benefit from earlier dialysis. Observational data suggests that patients who commence dialysis with higher levels of renal function are more likely to have significant comorbidity that results in higher mortality rates compared to patients who remain clinically well and biochemically stable and are able to defer the initiation of dialysis till later in the course of CKD. However, patients who are able to defer dialysis should have appropriate access created so as to avoid the use of temporary catheters and to facilitate initiation using the preferred dialysis modality. Estimates of glomerular filtration rates in Stage 5 CKD have been poorly validated and should not be used as the key determinant influencing the commencement of dialysis. The results of the IDEAL trial have influenced guidelines internationally and provide clinicians, patients and health care providers with important information to drive clinical decision making and rational service planning. %Z FOR Codes: 110312 111717 %0 Journal Article %~ PubMed %A Harris, David %T A new admiral for the flagship. %B Kidney International %D 2011 %C United Kingdom, United States %I Nature Publishing Group %V 80 %N 9 %P 899 %@ 0085-2538 %X %Z FOR Codes: 110312 %0 Journal Article %~ PubMed %A Lee, Vincent Ws %A Harris, David Ch %T Adriamycin nephropathy: A model of focal segmental glomerulosclerosis. %B Nephrology %D 2011 %C Australia %I Wiley-Blackwell Publishing Asia %V 16 %N 1 %P 30-38 %@ 1440-1797 %X Adriamycin nephropathy (AN) is a rodent model of chronic kidney disease that has been studied extensively and has enabled a greater understanding of the processes underlying the progression of chronic proteinuric renal disease. AN is characterized by podocyte injury followed by glomerulosclerosis, tubulointerstitial inflammation and fibrosis. Genetic studies have demonstrated a number of loci that alter both risk and severity of renal injury induced by Adriamycin. Adriamycin-induced renal injury has been shown in numerous studies to be modulated by both non-immune and immune factors, and has facilitated further study of mechanisms of tubulointerstitial injury. This review will outline the pharmacological behaviour of Adriamycin, and describe in detail the model of AN, including its key structural characteristics, genetic susceptibility and pathogenesis. %Z FOR Codes: 111699 110704 %0 Journal Article %~ PubMed %A Li, Philip Kam-Tao %A Chow, Kai Ming %A Matsuo, Seiichi %A Yang, Chih Wei %A Jha, Vivekanand %A Becker, Gavin %A Chen, Nan %A Sharma, Sanjib Kumar %A Chittinandana, Anutra %A Chowdhury, Shafiqul %A Harris, David Ch %A Hooi, Lai Seong %A Imai, Enyu %A Kim, Suhnggwon %A Kim, Sung Gyun %A Langham, Robyn %A Padilla, Benita S %A Teo, Boon Wee %A Togtokh, Ariunaa %A Walker, Rowan G %A Wang, Hai Yan %A Tsukamoto, Yusuke %T Asian Chronic Kidney Disease (CKD) Best Practice Recommendations - Positional Statements for Early Detection of CKD from Asian Forum for CKD Initiatives (AFCKDI). %B Nephrology (Carlton, Vic.) %D 2011 %C Australia %I Wiley-Blackwell Publishing Asia %V 16 %N 7 %P 633-41 %@ 1440-1797 %X %Z FOR Codes: 1103 %0 Journal Article %~ PubMed %A Gopinath, Bamini %A Harris, David C %A Flood, Victoria M %A Burlutsky, George %A Brand-Miller, Jennie %A Mitchell, Paul %T Carbohydrate nutrition is associated with the 5-year incidence of chronic kidney disease. %B Journal of Nutrition %D 2011 %C United States %I American Society for Nutrition %V 141 %N 3 %P 433-439 %@ 1541-6100 %X It has been shown that dietary glycemic index (GI) and fiber could have a role in the development of chronic diseases; however, the link between carbohydrate nutrition and development of chronic kidney disease (CKD) is unclear. We aimed to determine whether cross-sectional and longitudinal associations exist between carbohydrate nutrition (mean dietary GI, dietary intakes of carbohydrate, sugar, starch, and fiber) and CKD. Data included 2600 Blue Mountains Eye Study (1997-1999) participants aged ???50 y. Baseline biochemistry including serum creatinine was measured. Moderate CKD was defined as estimated glomerular filtration rate (eGFR) < 60 mL??min(-1)??1.73 m(-2). Dietary data were collected in a semiquantitative FFQ. Cross-sectionally, participants in the 4th quartile of mean dietary GI intake compared with those in the first quartile (reference) had a 55% increased likelihood of having eGFR < 60 mL??min(-1)??1.73 m(-2) [multivariable-adjusted OR = 1.55 (95% CI = 1.07-2.26); P-trend = 0.01]. After multivariable adjustment, participants in the 4th quartile of dietary cereal fiber intake compared with those in the first quartile (reference) had a 50% reduced risk of incident moderate CKD (P-trend = 0.03). Higher baseline consumption of energy-dense, nutrient-poor sources of carbohydrate (e.g. cookies) yielded a 3-fold higher risk of incident CKD (P-trend = 0.01). In summary, we observed a novel link between high cereal fiber intake and reduced incidence of moderate CKD and this was supported by the cross-sectional association with dietary GI. Conversely, our data suggest that higher intake of energy-dense, nutrient-poor sources of carbohydrate, potentially through acute hyperglycemia, could impair renal function. %Z FOR Codes: 111101 110312 %0 Journal Article %~ PubMed %A Gopinath, Bamini %A Harris, David C %A Flood, Victoria M %A Burlutsky, George %A Mitchell, Paul %T Consumption of long-chain n-3 PUFA, α-linolenic acid and fish is associated with the prevalence of chronic kidney disease. %B British Journal of Nutrition %D 2011 %C United Kingdom %I Cambridge University Press %V 105 %N 9 %P 1361-1368 %@ 0007-1145 %X Due to the anti-inflammatory properties of PUFA, it has been suggested that they may protect against kidney damage in adults. However, relatively few epidemiological studies have examined this hypothesis in human subjects. We investigated the association between dietary intakes of PUFA (n-3, n-6 and ??-linolenic acid), fish and the prevalence of chronic kidney disease (CKD). A total of 2600 Blue Mountains Eye Study (1997-9) participants aged ?????50 years were analysed. Dietary data were collected using a semi-quantitative FFQ, and PUFA and fish intakes were calculated. Baseline biochemistry including serum creatinine was measured. Moderate CKD was defined as an estimated glomerular filtration rate of or= 100 g/L during the evaluation period (weeks 21-33). RESULTS: Sixty-six subjects were enrolled in the study and all received at least one dose of darbepoetin alfa; 55 (83%) had mean Hb >or= 100 g/L during evaluation. Mean (SD) Hb concentrations at baseline and during the evaluation period were 119 (8.7) g/L and 114 (9.8) g/L, respectively. The median QM darbepoetin alfa dose at baseline and during the evaluation period was 80 microg. Darbepoetin alfa was considered to be well-tolerated. CONCLUSION: Patients with CKD not receiving dialysis who are receiving darbepoetin alfa Q2W can be safely and effectively extended to darbepoetin alfa QM. Dosing QM may simplify anaemia management for patients and health-care providers. %Z FOR Codes: 110312 110312 %0 Journal Article %~ PubMed %A Wu, Huiling %A Wang, Yuan Min %A Wang, Yiping %A Hu, Min %A Zhang, Geoff Yu %A Knight, John F %A Harris, David C H %A Alexander, Stephen I %T Depletion of gammadelta T cells exacerbates murine adriamycin nephropathy. %B Journal of the American Society of Nephrology : JASN %D 2007 %C US %I Lippincott Williams & Wilkins %V 18 %N 4 %P 1180-1189 %@ 1046-6673 %X It has been reported that the presence of gammadelta T cells in kidney is associated with kidney damage in human IgA nephropathy and in rat models of chronic renal injury, including Adriamycin nephropathy (AN), but the functional role of gammadelta T cells in this setting is unknown. This study examined the functional role of gammadelta T cells in tissue injury in a murine model of AN. Murine AN was induced in BALB/c mice by a single injection of Adriamycin. gammadelta T cells as a proportion of CD3(+) T cells were significantly increased in AN kidneys (16.8 +/- 3.9%) but not in lymph nodes (1.3 +/- 0.8%; P < 0.001). The proportion of gammadelta T cells in AN kidney correlated positively with serum creatinine and glomerular sclerosis. The Vgammadelta T cell receptor (TCR) repertoire in kidney showed expansion of a subset of cells that expressed Vgamma6/Vdelta1 genes and that used canonical TCR Vgamma6/Vdelta1 sequences in the CDR3 region of the TCR. gammadelta T cells that were sorted from the kidneys expressed TGF-beta but not IL-4, IL-10, or IFN-gamma. gammadelta T cells also expressed the activating receptor NKG2D and the NKG2D adaptor molecule DAP12. RAE-1, a ligand of NKG2D, was upregulated in AN kidney. Depletion of gammadelta T cells using anti-TCR gammadelta antibody resulted in worsening of serum creatinine, glomerulosclerosis, and interstitial inflammation. These studies indicate the involvement of the gammadelta T cell in innate recognition and regulation of inflammation in AN. %Z FOR Codes: 110704 110312 %0 Journal Article %~ PubMed %A Pollock, Carol A %A Cooper, Bruce A %A Harris, David C %T Early start peritoneal dialysis. %B Advances in chronic kidney disease %D 2007 %C United States %I WB Saunders Co. %V 14 %N 3 %P e27-e34 %@ 1548-5595 %X The timing of commencement of dialysis is controversial, as it has an impact on the patient''s lifestyle, the dialysis capacity of renal services, and costs to both the individual and community. In patients with chronic kidney disease, the commencement of dialysis based on clinical features of uremia and laboratory indices that mandate dialysis therapy may not optimize outcomes. Currently reported studies are subject to potential confounding factors, including lead-time bias, the timing of referral, uniform predialysis care, patient age, comorbidity, and compliance. Despite the lack of supporting evidence, national and international expert panels have generally recommended adopting guidelines that support the initiation of dialysis at levels of kidney function that are higher than observed in current practice. No compelling evidence supports the initial use of one modality of dialysis over another, but initiation of peritoneal dialysis will likely preserve residual kidney function to a greater extent than will initiation of hemodialysis. As preservation of endogenous kidney function is an important goal in patients with end-stage kidney disease, this outcome may contribute to the choice of modality. Objective parameters that will guide the initiation of dialysis to maximize survival, reduce morbidity, and inform as to the economic benefit of implementing such practice will be available when the Initiating Dialysis Early and Late (IDEAL) study reports in 2009. %Z FOR Codes: %0 Journal Article %~ PubMed %A Wang, Y %A Wang, Y P %A Zheng, G %A Lee, V W S %A Ouyang, L %A Chang, D H H %A Mahajan, D %A Coombs, J %A Wang, Y M %A Alexander, S I %A Harris, D C H %T Ex vivo programmed macrophages ameliorate experimental chronic inflammatory renal disease. %B Kidney international %D 2007 %C United States %I Blackwell Publishing, Inc. %V 72 %N 3 %P 290-9 %@ 1523-1755 %X Macrophage infiltration of the kidney is a prominent feature associated with the severity of renal injury and progressive renal failure. To determine the influence of macrophages in renal disease models in the absence of endogenous T and B cells, we performed adoptive transfer of macrophages into severe combined immunodeficient (SCID) mice. In this study, macrophages were isolated from the spleens of BALB/c mice and stimulated with lipopolysaccharide to induce classically activated M1 macrophages or with interleukin-4 (IL-4) and IL-13 to induce alternatively activated M2 macrophages. These macrophages were then infused into SCID mice with adriamycin nephropathy; an in vivo model of chronic inflammatory renal disease analogous to human focal segmental glomerulosclerosis. Mice infused with M1 macrophages had a more severe histological and functional injury, whereas M2 macrophage-induced transfused mice had reduced histological and functional injury. Both M1 and M2 macrophages localized preferentially to the area of injury and maintained their phenotypes even after 4 weeks. The protective effect of M2 macrophages was associated with reduced accumulation and possibly downregulated chemokine and inflammatory cytokine expression of the host infiltrating macrophages. Our findings demonstrate that macrophages not only act as effectors of immune injury but can be induced to provide protection against immune injury. %Z FOR Codes: %0 Journal Article %~ PubMed %A Veness, M J %A Harris, D %T Role of radiotherapy in the management of organ transplant recipients diagnosed with non-melanoma skin cancers. %B Australasian radiology %D 2007 %C Australia %I Blackwell Publishing Asia %V 51 %N 1 %P 12-20 %@ 1440-1673 %X Organ transplantation has had a major effect on the lives of thousands of patients worldwide. In Australia and New Zealand, over 13 000 patients have become organ transplant recipients (OTR). Following transplantation, patients require lifelong immunosuppression to prevent organ rejection. The loss of immune surveillance results in OTR experiencing a higher incidence of infection and malignancy in comparison with the general (immunocompetent) population. Non-melanoma skin cancer (NMSC) is the most common malignancy worldwide, arising most often on the sun-exposed head and neck. Organ transplant recipients experience a higher incidence of NMSC when compared with the general population and a higher incidence of squamous cell carcinoma compared with basal cell carcinoma. Organ transplant recipients also develop NMSC at a younger age and experience multiple new NMSC. Australians experience the highest incidence of NMSC in the world with a consequence that NMSC arising in OTR can lead to significant morbidity and even mortality. Radiation oncologists treating patients with skin cancer will almost certainly make recommendations in the setting of NMSC arising in OTR. The aim of this article is to discuss the role of radiotherapy in the management of OTR diagnosed with NMSC. The emphasis will be on the treatment of patients with a high-risk NMSC (e.g. squamous cell carcinoma, Merkel cell carcinoma, unfavourable basal cell carcinoma) because this reflects the most common clinical scenario in which a recommendation of radiotherapy, usually adjuvant, may be considered. %Z FOR Codes: %0 Journal Article %~ PubMed %A Li, Xiaomei %A Li, Xiangpei %A Qian, Long %A Wang, Guosheng %A Zhang, Hong %A Wang, Xiaoqiu %A Chen, Ke %A Zhai, Zhimin %A Li, Qing %A Wang, Yiping %A Harris, David C H %T T regulatory cells are markedly diminished in diseased salivary glands of patients with primary Sjögren's syndrome. %B The Journal of rheumatology %D 2007 %C Canada %I Journal of Rheumatology Publishing Co. Ltd. %V 34 %N 12 %P 2438-2445 %@ 0315-162X %X OBJECTIVE: To investigate the abnormalities of T regulatory cells (Treg) in salivary glands and peripheral blood in patients with primary Sjögren''s syndrome (pSS). METHODS: Levels of CD4+CD25+ high T cells of the peripheral blood of 52 patients with pSS were measured by flow-cytometric assay. Lower lip salivary gland biopsies were examined by immunohistochemistry, using monoclonal mouse anti-human antibodies [CD25, CD4, CD8, CD68, forkhead transcription factor (Foxp3)] in 30 patients with pSS. Using real-time polymerase chain reaction, Foxp3 messenger RNA expression was assessed in the salivary glands and CD4+ T cells from peripheral blood. RESULTS: Many inflammatory cells, predominantly CD4+ and CD8+ T cells and macrophages, were found in salivary glands of patients with SS, but CD4+CD25+ Treg numbers and Foxp3 expression were markedly reduced in those biopsy samples. Levels of CD4+CD25+ high T cells and Foxp3 expression in peripheral blood of patients with pSS were significantly lower than in healthy controls. However, the inhibitory function of CD4+CD25+ T cells in pSS was unchanged compared to that of controls. Peripheral CD4+CD25+ high T cell numbers in pSS did not correlate with Schirmer''s test and salivary flow rate, or with the presence or absence of anti-SSA/SSB antibodies and immunoglobulin level. CONCLUSION: The remarkable reduction of Treg numbers in salivary glands and reduction of CD4+CD25+ high T cells in peripheral blood suggests a possible role for absence of Treg in the pathogenesis of salivary gland destruction in pSS. %Z FOR Codes: 110322