While podocyte depletion has been linked to the development of glomerulosclerosis, there is very limited information in human pre-disease stages. Methods: Kidneys from 14 adult male Caucasian Americans without renal disease were collected at autopsy in Mississippi, USA. Age and history of hypertension were obtained from medical records. Nglom, podocyte number and density were estimated using unbiased stereology. Age was dichotomized into younger and older (cut-off: 40 years), and Nglom as normal and low (cut-off: 0.6 million). Data is presented as median and inter quartile range (IQR). Results: Median age was

39 (IQR: 21–50 years) with 31% of subjects categorized as hypertensive. Median Nglom was SCH772984 mouse 0.95 (IQR: 0.61–1.3 million nephrons). Podocyte number

in younger (433; IQR: 386–512), normotensive (424; IQR: 358–506) and normal Nglom subjects (424; IQR: 356–493) was higher than in older (357; IQR: 317–425; P < 0.001), hypertensive (359; IQR: 315–433; P < 0.05) and low Nglom subjects (358; IQR: 301–409; P < 0.05). Similarly, podocyte density (podocytes per 106 μm3 of glomerular Tyrosine Kinase Inhibitor Library tuft) was lower in subjects who were older (195; IQR: 139–241), hypertensive (194; IQR: 94–241) and with low Nglom (121; IQR: 71–266) compared to subjects who were younger (275; IQR: 216–318; P < 0.0001), normotensive (260; IQR: 194–295; P < 0.001) and with normal Nglom (240; IQR: 194–289; P < 0.01). Discussion: This preliminary report suggests that older age, hypertension and low Nglom are associated with podocyte depletion in adults without kidney disease, raising questions about the limit for podocyte depletion before the

development of glomerulosclerosis. 187 SAFETY AND EFFICACY OF RAPID IRON POLYMALTOSE INFUSION IN NON DIALYSIS DEPENDENT CHRONIC KIDNEY DISEASE STAGE III A – STAGE Glycogen branching enzyme V PATIENTS M GUPTA, G HARRIS, C HOLMES Bendigo Hospital, Bendigo, Australia Aim: Assess safety and efficacy of a rapid iron polymaltose infusion in Non Dialysis dependent Chronic Kidney Disease patients stage IIIA-V. Background: Hypo-responsiveness to erythropoiesis stimulating agents ESAs and Iron deficiency is a common cause of anaemia in Dialysis and Non Dialysis dependent Chronic Kidney Disease patients stage IIIA-V (ND-CKD SIIIA-V). Across many Australian hospitals Iron polymaltose. (1 gram) IP infused slowly over 4 hours and 50 minutes. In last 4 months experience gained with rapid IP infusion over 73 minutes. Data is lacking on rapid IP infusion in ND-CKD SIIIA-V patients. Methods: We studied 63 (39 Male, 24 Female) ND-CKD SIIIA-V patients from January 2013 to Mid-March 2014, 34 patients mean age 73.