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1.
Diabet Med ; 36(11): 1417-1423, 2019 11.
Article in English | MEDLINE | ID: mdl-30972797

ABSTRACT

AIMS: To estimate progression rates, evaluate risk factors for progression, and study rate ratios for progression among people with a healed diabetic foot ulcer according to whether the healed ulcer was neuropathic, neuro-ischaemic or critically ischaemic. METHODS: We conducted a retrospective cohort study in all individuals with a healed diabetic foot ulcer treated at the Steno Diabetes Centre Copenhagen foot clinic in the period 2010 to 2016. The outcome of interest was recurrent/other new diabetic foot ulcers. RESULTS: A total of 780 people had a healed diabetic foot ulcer in the study period (2010-2016). The participants were followed for 1249 person-years [median (Q1-Q3) 1.04 (0.38-2.46) person-years] in total. One-third (33.1%) developed a recurrent/other new diabetic foot ulcer per year. Male gender, people with Type 2 diabetes and smokers had a statistically significantly higher risk of progression to a recurrent/other new diabetic foot ulcer compared to participants without these risk factors. Participants with neuro-ischaemic or critically ischaemic diabetic foot ulcers had statistically significantly higher progression rates than participants with neuropathic diabetic foot ulcers. CONCLUSIONS: Focus should be on preventing future recurrent/other new diabetic foot ulcers especially in people with ischaemia.


Subject(s)
Diabetic Angiopathies/physiopathology , Diabetic Foot/physiopathology , Ischemia/physiopathology , Wound Healing/physiology , Aged , Diabetic Angiopathies/epidemiology , Diabetic Foot/epidemiology , Disease Progression , Female , Humans , Incidence , Ischemia/complications , Male , Middle Aged , Predictive Value of Tests , Recurrence , Retrospective Studies , Secondary Prevention
2.
Acta Endocrinol (Copenh) ; 121(1): 136-40, 1989 Jul.
Article in English | MEDLINE | ID: mdl-2662694

ABSTRACT

It is hypothesized that interleukin 1 induces toxic free radical formation in pancreatic beta-cells leading to beta-cell degeneration and destruction. Therefore, isolated rat pancreatic islets were examined for interleukin 1 and heat shock induced proteins. Afer exposure to human interleukin 1 beta (0.015 to 10 micrograms/1) or heat (40 degrees C) for up to 24 h, islets were labelled with 35S-methionine and solubilized. Islets proteins were analysed by SDS-polyacrylamide gel electrophoresis. By autoradiography it was shown that both interleukin 1 and heat exposure induced the formation of a 70 kD protein. Further, interleukin 1 induced the formation of two proteins of 32 and 80 kD, respectively, which was not seen after heat exposure. Possibly, the 70 kD protein is a member of the heat shock protein 76 family, participating in unspecific cellular defence and maybe free radical scavenging. Other candidates are the superoxide radical scavenging enzyme manganous superoxidedismutase, MHC class II molecules, and heme oxygenase.


Subject(s)
Heat-Shock Proteins/biosynthesis , Interleukin-1/pharmacology , Islets of Langerhans/metabolism , Animals , Cells, Cultured , Rats , Rats, Inbred Strains
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