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G G Mamaeva

Publications and source records attributed to G G Mamaeva.

At least 19 recordsLinked to original sources
PubMed2002

[Polymorphic locus D6S392 near the Mn-dependent superoxide dismutase gene is associated with diabetes mellitus in the Moscow population].

AIM: Distribution of alleles of tetranucleotide microsatellite D6S392 located nearby the gene of Mn-dependent superoxide dismutase (SOD2) was studied in healthy donors (n = 143), patients with insulin-dependent (n = 166) and insulin-independent (n = 101) diabetes mellitus (IDDM and IIDM). MATERIALS AND METHODS: Alleles of the polymorphic locus D6S392 were amplified using polymerase chain reaction (PCR) on the basis of genome DNA isolated from the venous blood of the examinees. PCR products were analysed with gel-electrophoresis in polyacrylamide gel. Significance of differences of allele and genotypes distribution in the population control and patients were assessed with Fisher's criterion and Bonferroni's corrections. RESULTS: Locus D6S392 contains 31 allele from 210 to 330 pn in length and 37 to 67 tandem repeats. Compared to controls, IDDM patients had less frequent incidence of low molecular allele 41 and 42 as well as allele 62. CONCLUSION: Polymorphic locus D6S392 is closely associated with development of DM in Moscow population. This may indicate possible participation of the gene SOD2 in development of this pathology.

Adolescent↗
PubMed2000

[Analysis of polymorphism of the D11S2008 locus of the catalase gene in patients with hypertension and ischemic heart disease in non-insulin-dependent diabetes mellitus in the Muscovite population].

The allele and genotype frequency distributions of the D11S2008 tetranucleotide microsatellite linked with the catalase (CAT) gene were compared between patients with insulin-dependent diabetes mellitus (IDDM) with (N = 72) and without (N = 82) coronary heart disease (CHD), and between IDDM patients with normal arterial tension (N = 82) and with arterial hypertension (N = 42). In total, eight alleles were found. The alleles varied in length from 120 to 148 bp and included from 15 to 22 tetranucleotide repeats. The groups did not differ in D11S2008 allele and genotype frequencies; the only exception was that the frequency of genotype 18/19 in patients with CHD (31.9%) was significantly higher than in the controls (18.3%). Thus, the D11S2008 polymorphic locus located in proximity to the catalase gene proved to be weakly associated with CHD, but not associated with arterial hypertension, in IDDM patients. Genotype 18/19 was associated with a higher risk of CHD.

Base Sequence↗
PubMed1998

[Polymorphism of the angiotensin I-converting enzyme gene in diabetic retinopathy patients and type 2 diabetes mellitus patients with myocardial infarction].

The insertion/deletion polymorphism (I/D) of the angiotensin I-converting enzyme gene (ACE) was examined in type I diabetes mellitus patients (DM) with (n = 31), or without (n = 33) retinopathy, and in type 2 DM patients with either myocardial infarction (MI; n = 75), or with (n = 37), or without (n = 178) retinopathy. No association between the ACE gene and retinopathy in type 1 and type 2 DM patients was revealed. In the type 2 DM patients with MI, a statistically significant (P < 0.05) elevation of the D allele frequency (64%) compared to that without MI (55.3%), together with statistically nonsignificant prevalence of the DD homozygotes (41% versus 30.6%) was observed. Our data indicate that the D allele (RR 1.43) and DD genotype (RR 1.75) are risk factors for myocardial infarction in the type 2 DM patients.

Adult↗
PubMed1995

[Kidney lesions in non-insulin dependent diabetes mellitus].

Because little is known about disordered metabolism of uric acid as a pathogenetic mechanism of renal damage in non-insulin-dependent diabetes mellitus (NIDDM) it was studied in 75 NIDDM and 48 IDDM patients. Clinical examination of the patients included evaluation of purin metabolism according to serum uric acid, diurnal urine excretion, uric acid clearance. Hyperuricemia occurred more frequently in NIDDM. Positive correlation was observed between hyperuricosuria and the severity of diabetic nephropathy which was more pronounced in IDDM.

Adult↗
PubMed1989

[Early detection of nephroangiopathy in patients with diabetes mellitus and approaches to its correction].

Patients with types I and II diabetes mellitus without the clinical signs of nephroangiopathy were subjected to a comprehensive study of renal function. Using the method for determination of endogenous creatinine clearance (140 patients), radionuclide methods (in 350 patients) and beta-2-microtest (in 130 patients) the impairment of renal filtration function was established in 30.8, 67.6 and in 52% of the patients, respectively. In 16.3% of the patients, there was an impairment of the proximal part of the canaliculi. The determination of proteinuria selectivity in polyacrylamide gel revealed latent proteinuria in 70% of the patients and enabled one to specify the spectrum of uroproteins. The informative value of the methods suggested was supported by the results of morphologic studies of biopsy specimens of the kidneys and skin. The importance of the specification of the preclinical stage of diabetic nephroangiopathy was determined by the possibility of the reverse development of the pathological alterations at the given stage. The authors describe the experience gained with the correction of functional disorders by means of programmed administration of insulin using the apparatus Biostator, application of diamicron and angioprotectors.

Creatine↗
PubMed1987

[Use of high-purity insulins in the treatment of patients with diabetes mellitus].

A total of 43 patients aged 16-62 with moderately severe and severe type I diabetes mellitus of 2-27 years duration were observed. The patients were admitted to hospital with decompensation of metabolic processes. In order to achieve compensation monocomponent insulins were administered in an individual dose depending on the levels of glycemia and glucosuria and a scheme of drug administration (2 times continuously, i.v. using the Biostator apparatus). The duration of therapy was 4 months. A hypoglycemic effect in relation to immunological and hemorheological indices was assessed. A hypoglycemic effect was noted in all the patients. A positive effect of high-purity insulins on immunological and hemorheological indices was revealed. These insulins can be used for prevention of diabetic angiopathies.

Adolescent↗
PubMed1985

[Clinico-morphological characteristics of diabetic nephroangiopathy in insulin-dependent diabetes mellitus].

The clinicofunctional characteristics of the kidneys were estimated, biopsy of the kidney and skin with an immunohistochemical study was performed and some immunity values considered in 17 patients with type I diabetes mellitus. The study was performed with respect to the degree of expression of the clinical signs of nephropathy including the preclinical stage, too. Three types of morphological changes in the kidney and skin were singled out. Initial tubuloglomerular disorders occurred at the preclinical stage of nephroangiopathy. The nature of changes in the skin coincided mostly with changes in the kidney lagging behind in some cases. The results confirmed the leading role of metabolic derangements in the genesis of microangiopathies and a necessity of a good compensation of diabetes for its prevention. The immunohistochemical and immunological findings did not make it possible to exclude the immune mechanisms in the development of diabetic nephroangiopathy.

Adolescent↗