PMID- 28283275 OWN - NLM STAT- MEDLINE DCOM- 20180219 LR - 20180219 IS - 1578-8989 (Electronic) IS - 0025-7753 (Linking) VI - 148 IP - 8 DP - 2017 Apr 21 TI - Kidney involvement in MELAS syndrome: Description of 2 cases. PG - 357-361 LID - S0025-7753(17)30111-2 [pii] LID - 10.1016/j.medcli.2017.01.029 [doi] AB - INTRODUCTION: MELAS syndrome -myopathy, encephalopathy, lactic acidosis and stroke-like episodes- is a maternally-inherited mitochondrial cytopathy related to several mitochondrial DNA mutations, with the A3243G mutation in tRNA(Leu) gene being the most frequent of them. PATIENTS AND METHODS: Apart from its typical symptomatology, patients usually exhibit a maternally-inherited history of neurosensory deafness and insulin-dependent type 2 diabetes mellitus (T2DM). Recent studies have shown that few patients carrying a A3243G mutation also suffer from renal dysfunction, usually in form of focal segmental glomerulosclerosis (FSGS). RESULTS: In this study we examine kidney involvement in 2 unrelated patients with a A3243G mutation by genetic testing. Both have a maternally-inherited neurosensory deafness and insulin-dependent T2DM. A renal biopsy was performed in both patients. One patient developed nephrotic proteinuria and renal insufficiency, with FSGS findings being observed in the kidney biopsy, whereas the other suffered from mild proteinuria and renal insufficiency, with non-specific glomerular changes. CONCLUSION: The presence of FSGS or other kidney involvement accompanied by hereditary neurosensory deafness and T2DM could be suggestive of a A3243G tRNA(Leu) mutation and should prompt a genetic testing and an evaluation of potential extrarenal involvement. CI - Copyright (c) 2017 Elsevier Espana, S.L.U. All rights reserved. FAU - Alcubilla-Prats, Pau AU - Alcubilla-Prats P AD - Servei de Nefrologia i Trasplantament Renal, Hospital Clinic, Universidad de Barcelona, Barcelona, Espana. FAU - Sole, Manel AU - Sole M AD - Servei de Anatomia Patologica, Hospital Clinic, Universidad de Barcelona, Barcelona, Espana. FAU - Botey, Albert AU - Botey A AD - Servei de Nefrologia i Trasplantament Renal, Hospital Clinic, Universidad de Barcelona, Barcelona, Espana. FAU - Grau, Josep Maria AU - Grau JM AD - Servei de Medicina Interna, Hospital Clinic, Universidad de Barcelona, Barcelona, Espana; Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Hospital Clinic, Universidad de Barcelona, Barcelona, Espana. FAU - Garrabou, Gloria AU - Garrabou G AD - Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), Hospital Clinic, Universidad de Barcelona, Barcelona, Espana; Cellex, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Hospital Clinic, Universidad de Barcelona, Barcelona, Espana. FAU - Poch, Esteban AU - Poch E AD - Servei de Nefrologia i Trasplantament Renal, Hospital Clinic, Universidad de Barcelona, Barcelona, Espana. Electronic address: epoch@clinic.cat. LA - eng LA - spa PT - Case Reports PT - Journal Article TT - Afeccion renal en el sindrome de MELAS: descripcion de 2 casos. DEP - 20170307 PL - Spain TA - Med Clin (Barc) JT - Medicina clinica JID - 0376377 SB - IM CIN - Med Clin (Barc). 2017 Oct 11;149(7):315. PMID: 28602217 CIN - Med Clin (Barc). 2017 Oct 11;149(7):314. PMID: 28647280 MH - Adult MH - Female MH - Glomerulosclerosis, Focal Segmental/diagnosis/*etiology MH - Humans MH - MELAS Syndrome/complications/*diagnosis MH - Male MH - Middle Aged MH - Renal Insufficiency/diagnosis/*etiology OTO - NOTNLM OT - A3243G mutation OT - Chronic kidney disease OT - Citopatia mitocondrial OT - Focal segmental glomerulosclerosis OT - Glomeruloesclerosis focal segmentaria OT - Insuficiencia renal cronica OT - Mitochondrial cythopathy OT - Mutacion A3243G EDAT- 2017/03/12 06:00 MHDA- 2018/02/20 06:00 CRDT- 2017/03/12 06:00 PHST- 2016/10/14 00:00 [received] PHST- 2017/01/18 00:00 [revised] PHST- 2017/01/19 00:00 [accepted] PHST- 2017/03/12 06:00 [pubmed] PHST- 2018/02/20 06:00 [medline] PHST- 2017/03/12 06:00 [entrez] AID - S0025-7753(17)30111-2 [pii] AID - 10.1016/j.medcli.2017.01.029 [doi] PST - ppublish SO - Med Clin (Barc). 2017 Apr 21;148(8):357-361. doi: 10.1016/j.medcli.2017.01.029. Epub 2017 Mar 7.