Krzysztof Strojek

Prof. Dr. Krzysztof Strojek


Research Focus & Metrics

Academic Career Length

35Years (1992-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
6 September 2011 in Diabetes, Obesity and Metabolism
Verified
Journal Article
Closed access
PDF file
KSKrzysztof Strojek
Krzysztof Strojek
KYK. H. Yoon
K. H. Yoon
VHV. Hruba
V. Hruba
MEM. Elze
M. Elze
ALA. M. Langkilde
A. M. Langkilde
SPS. Parikh
S. Parikh

1 March 2009 in Diabetes Care
Verified
Journal Article
Open access
IRItamar Raz
Itamar Raz
PWPeter W.F. Wilson
Peter W.F. Wilson
KSKrzysztof Strojek
Krzysztof Strojek
IKIrina Kowalska
Irina Kowalska
VBVelimir Bozikov
Velimir Bozikov
SJScott J. Jacober
Scott J. Jacober
OBJECTIVE—Hyperglycemia and Its Effect After Acute Myocardial Infarction on Cardiovascular Outcomes in Patients With Type 2 Diabetes Mellitus (HEART2D) is a multinational, randomized, controlled trial designed to compare the effects of prandial versus fasting glycemic control on risk for cardiovascular outcomes in patients with type 2 diabetes after acute myocardial infarction (AMI). RESEARCH DESIGN AND METHODS—Patients (type 2 diabetes, aged 30–75 years) were randomly assigned within 21 days after AMI to the 1) prandial strategy (PRANDIAL) (three premeal doses of insulin lispro targeting 2-h postprandial blood glucose <7.5 mmol/l) or the 2) basal strategy (BASAL) (NPH twice daily or insulin glargine once daily targeting fasting/premeal blood glucose <6.7 mmol/l). RESULTS—A total of 1,115 patients were randomly assigned (PRANDIAL n = 557; BASAL n = 558), and the mean patient participation after randomization was 963 days (range 1–1,687 days). The trial was stopped for lack of efficacy. Risks of first combined adjudicated primary cardiovascular events in the PRANDIAL (n = 174, 31.2%) and BASAL (n = 181, 32.4%) groups were similar (hazard ratio 0.98 [95% CI 0.8–1.21]). Mean A1C did not differ between the PRANDIAL and BASAL groups (7.7 ± 0.1 vs. 7.8 ± 0.1%; P = 0.4) during the study. The PRANDIAL group showed a lower daily mean postprandial blood glucose (7.8 vs. 8.6 mmol/l; P < 0.01) and 2-h postprandial blood glucose excursion (0.1 vs. 1.3 mmol/l; P < 0.001) versus the BASAL group. The BASAL group showed lower mean fasting blood glucose (7.0 vs. 8.1 mmol/l; P < 0.001) and similar daily fasting/premeal blood glucose (7.7 vs. 7.3 mmol/l; P = 0.233) versus the PRANDIAL group. CONCLUSIONS—Treating diabetic survivors of AMI with prandial versus basal strategies achieved differences in fasting blood glucose, less-than-expected differences in postprandial blood glucose, similar levels of A1C, and no difference in risk for future cardiovascular event rates.

1 March 2001 in Journal of the American Society of Nephrology
Verified
Journal Article
Closed access
PDF file
KSKrzysztof Strojek
Krzysztof Strojek
Wladyslaw GrzeszczakWladyslaw Grzeszczak
Wladyslaw Grzeszczak
JGJuta Górska
Juta Górska
MLMonika I. Leschinger
Monika I. Leschinger
EREberhard Ritz
Eberhard Ritz
: There is convincing evidence for a specific BP-independent effect of angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers on albuminuria in glomerular disease. Because progression of glomerular disease is not consistently halted by these agents, there is a need to explore potential renoprotective effects of other drugs. Recent animal work documented that nonhypotensive doses of moxonidine, a sympathicoplegic agent, reduce albuminuria and development of glomerulosclerosis in a BP-independent manner. A randomized, crossover design was used to assess the human relevance of the experimental data in 15 normotensive, nonsmoking type 1 diabetic mellitus patients with good glycemic control (age, 37.3 ± 6.6 yr; 9 men/6 women; duration of diabetes, 23.6 ± 5.1 yr) with baseline urinary albumin excretion rates (AER) >20 μg/min in the run-in phase. AER was assessed in overnight timed urine collections. The patients were assigned to a 3-wk placebo and a 3-wk moxonidine (0.2 mg twice a day) period, respectively, in random order. This dose causes modest BP lowering in hypertensive individuals but does not affect BP in normotensive individuals. There was no significant effect on ambulatory BP (mean arterial pressure, 91.8 ± 7.1 mmHg in the third week of placebo and 91.1 ± 8.7 mmHg on moxonidine). There was a significant (P < 0.006) difference of the treatment effects between placebo and moxonidine, respectively, on AER; median AER at the end of the placebo period was 39.8 μg/min (range, 15.9 to 117 μg/min) versus 29.0 (range, 9.03 to 85.8 μg/min) at the end of the moxonidine period. The data document an antialbuminuric effect of nonhypotensive doses of moxonidine. Diminished sympathetic traffic to the kidney is the most plausible explanation for the finding.

29 October 2008 in Diabetes, Obesity and Metabolism
Verified
Journal Article
Closed access
PDF file
ABAnthony Barnett
Anthony Barnett
AKA. J. Krentz
A. J. Krentz
KSKrzysztof Strojek
Krzysztof Strojek
JSJ. Sieradzki
J. Sieradzki
FAF. Azizi
F. Azizi
GWG. Winkler
G. Winkler

12 October 2009 in Current Medical Research and Opinion
Verified
Journal Article
Closed access
KSKrzysztof Strojek
Krzysztof Strojek
WBWan M.W. Bebakar
Wan M.W. Bebakar
DKDuma T. Khutsoane
Duma T. Khutsoane
MPMilica Pesic
Milica Pesic
AŠAlena Šmahelová
Alena Šmahelová
SKSanjay Kalra
Sanjay Kalra
To assess the efficacy and safety of biphasic insulin aspart 70/30 (BIAsp 30) and insulin glargine, administered once daily in subjects with type 2 diabetes inadequately controlled with oral anti-diabetic drugs. In this 26-week, open-labeled, randomized, parallel-group, multinational, treat-to-target trial, 480 insulin-naïve subjects were randomized to receive either BIAsp 30 before dinner or insulin glargine at bedtime, both in combination with metformin and glimepiride. NCT00469092, ClinicalTrials.gov. A total of 433 subjects completed the trial. Estimated mean reduction in HbA(1c) from baseline to end of treatment was -1.41% with BIAsp 30 and -1.25% with insulin glargine (BIAsp 30 - insulin glargine = -0.16%, 95% CI [-0.30; -0.02], p = 0.029). At the end of treatment, mean HbA(1c) was 7.1% and 7.3% for BIAsp 30 and insulin glargine, respectively. Significantly lower plasma glucose levels were observed with BIAsp 30 post-dinner (BIAsp 30 - insulin glargine = -0.52 mmol/L, 95% CI [-1.02; -0.03], p = 0.04) and at bedtime (BIAsp 30 - insulin glargine = -0.78 mmol/L, 95% CI [-1.25; -0.31], p < 0.01). The relative risk (RR) of experiencing a nocturnal hypoglycemic episode (00:00-06.00 a.m.) was significantly higher with BIAsp 30 than with insulin glargine (1.1 versus 0.5 episodes/year, RR = 2.41, 95% CI [1.34; 4.34], p = 0.003), but overall hypoglycemia rates were low. There were three major hypoglycemic episodes in each group. With respect to HbA(1c), BIAsp 30 fulfilled the statistical criteria for non-inferiority and superiority to insulin glargine and, according to pre-defined criteria, the improvements in HbA(1c) are considered clinically equivalent. Subjects had an increased risk of minor nocturnal hypoglycemia with BIAsp 30. There were no differences in treatment satisfaction between the two groups.

1 May 2001 in Otology & Neurotology
Verified
Journal Article
Closed access
GLGrażyna Lisowska
Grażyna Lisowska
GNGrzegorz Namysłowski
Grzegorz Namysłowski
KMKrzysztof F. Morawski
Krzysztof F. Morawski
KSKrzysztof Strojek
Krzysztof Strojek
Objective The aim of this study was to evaluate the cochlear micromechanics and central auditory function in patients with type 1 diabetes mellitus and to identify the site of possible dysfunction. Methods Cochlear activity was evaluated by recording distortion product otoacoustic emissions (DPOAEs). DPOAEs were performed using an ILO 92 Otodynamics Analyser. Functional changes in the retrocochlear auditory pathway were evaluated by auditory brainstem responses (ABRs). DPOAEs and ABRs were measured in 42 normally hearing patients with type 1 diabetes mellitus aged 21 to 42 years, and 33 age-and sex-matched nondiabetic control subjects. Results Both of the groups (diabetic and control) had normal and undifferentiated results in tonal and impedance audiometry. ABR peripheral transmission time (wave I) and central transmission time (interpeak latencies I–V) were significantly delayed in the diabetic compared with normal subjects, and the mean amplitudes of various DPOAEs were significantly reduced in the diabetic patients compared with the control subjects. Conclusions Combined use of different procedures for monitoring central and peripheral portions of the auditory pathway in diabetic patients showed alterations in cochlear micromechanics and the retrocochlear auditory pathway. Hearing impairment in diabetic patients is usually mild and subclinical, and can be detected early by accurate and objective audiometric methods.