Leukocyte dysfunction in diabetic foot infections

NewsBot · Jul 11, 2006

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Effect of the function of polymorphonuclear leukocytes and interleukin-1 beta on wound healing in patients with diabetic foot infections.
J Infect. 2006 Jul 6;

OBJECTIVES: This study was carried out prospectively to determine the effect on prognosis of phagocytic activity index (PAI) and intracellular killing activity (IKA) of polymorphonuclear leukocytes (PMNL), and the levels of interleukin-1 beta (IL-1beta) on prognosis in patients with diabetic foot infection (DFI).

METHODS: The evaluation of PAI and IKA in PMNL and the levels of IL-1beta were performed at the beginning and in the second and fourth weeks of therapy in all diabetic patients, who were categorized into a healing group (HG) and a non-healing group (NHG) on the basis of therapy results.

RESULTS: Sixty-six cases (38 diabetic patients and 28 non-diabetic controls) were included in the study. Full recovery was observed in 23 HG patients, whereas 15 (NHG) patients were unresponsive to treatment and nine patients were subjected to amputation at the end. At the baseline, PAI, IKA and IL-1beta levels in HG were not significantly different compared to those of NHG, but at weeks 2 and 4, PAI and IKA levels were significantly higher and IL-1beta levels were significantly lower than those in NHG. On the other hand, at the baseline, PAI and IKA values in HG were significantly lower and IL-1beta levels were significantly higher in comparison with the controls. However, no significant difference was observed at week 2 or 4.

CONCLUSION: Our results suggest that the PMNL functions and IL-1beta regulation deteriorated in patients with DFI, and that such deteriorations might indicate inefficient therapeutic responses in patients with diabetes mellitus.
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NewsBot · Apr 6, 2018

Assessment of telomerase activity in leukocytes of type 2 diabetes mellitus patients having or not foot ulcer: Possible correlation with other clinical parameters.
Baltzis D et al
Exp Ther Med. 2018 Apr;15(4):3420-3424.

Telomerase is the enzyme that maintains telomere length by adding telomeric repeats after each cell division. Numerous metabolic factors such as obesity, insulin resistance or physical inactivity have been associated with shortened telomeres. In the present study, we assessed telomerase activity in diabetic patients having or not foot ulcer. A total of 90 adult patients with type 2 diabetes mellitus (T2DM) were studied. Patients were allocated into two groups according to the absence or presence of active foot ulcers as follows: Νon-ulcer group (N=58) and ulcer group (N=32). Our data revealed that the patients with diabetic ulcers had significantly greater waist circumference and neuropathy disability score, while exhibiting lower telomerase activity, indicating the possible existence of a common clinical profile among ulcer-bearing diabetic patients. Validation of our findings by extending the study in larger patient groups may contribute to the understanding of T2DM pathophysiology and its main clinical implications.
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