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Objective: To achieve a consensus-based definition of Low Disease Activity (LDA) for use in cSLE trials. Methods: The International cSLE T2T Task Force, comprising of paediatric rheumatologists/nephrologists, and adult rheumatologists undertook a series of Delphi surveys/consensus meetings to discuss, refine, and vote upon cSLE LDA criteria. Results: The Task Force agreed that LDA should be based upon the adult-SLE Lupus Low Disease Activity State definition (LLDAS), with modifications to make it applicable to cSLE (cLLDAS). They agreed upon five cLLDAS criteria: (1) SLE Disease Activity Index (SLEDAI)-2 K ≤4, with no activity in major organ systems; (2) no new features of lupus disease activity compared with the last assessment; (3) Physician Global Assessment score of ≤1 (0–3 scale); (4) prednisolone dose of ≤0.15 mg/kg/day, 7.5 mg/day/maximum; while on (5) stable antimalarials, immunosuppressives, and biologics. Conclusions: A cSLE-appropriate definition of cLLDAS has been generated, maintaining alignment with the adult-SLE definition to promote life-course research.

Theoretically there are several ways to prevent pyelonephritis and renal scarring caused by P-fimbriated Escherichia coli. Screening for individuals at risk, e.g. those carrying P-fimbriated pyelonephritogenic E. coli or those with high receptor density on their uroepithelial cells, could perhaps define a population where prophylaxis with a receptor analogue or vaccination with P-fimbriae may be relevant. Epidemiological measures in neonatal and maternity wards may prevent the nosocomial spread of virulent bacteria and reduce the number of colonized infants. However, no such methods have so far had any proven clinical relevance, and today, the important concern is still to try by conventional means--as we have always done--to get an early diagnosis and to treat the patient without delay.

PubMedID: 25145936 Urofacial syndrome (UFS) is an autosomal recessive congenital disease featuring grimacing and incomplete bladder emptying. Mutations of HPSE2, encoding heparanase 2, a heparanase 1 inhibitor, occur in UFS, but knowledge about the HPSE2 mutation spectrum is limited. Here, seven UFS kindreds with HPSE2 mutations are presented, including one with deleted asparagine 254, suggesting a role for this amino acid, which is conserved in vertebrate orthologs. HPSE2 mutations were absent in 23 non-neurogenic neurogenic bladder probands and, of 439 families with nonsyndromic vesicoureteric reflux, only one carried a putative pathogenic HPSE2 variant. Homozygous Hpse2 mutant mouse bladders contained urine more often than did wild-type organs, phenocopying human UFS. Pelvic ganglia neural cell bodies contained heparanase 1, heparanase 2, and leucine-rich repeats and immunoglobulin-like domains-2 (LRIG2), which is mutated in certain UFS families. In conclusion, heparanase 2 is an autonomic neural protein implicated in bladder emptying, but HPSE2 variants are uncommon in urinary diseases resembling UFS. Copyright © 2015 by the American Society of Nephrology. Kidney Research UK Wellcome Trust: 066647 Medical Research Council: G0600040 Medical Research Council: MR/L002744/1

The importance of fecal colonization with P-fimbriated Escherichia coli for the later development of pyelonephritis was studied among infants before the age of 11 months. In contrast to previous studies, the fecal colonization with a P-fimbriated E. coli strain did not increase the incidence of acute pyelonephritis.