Effects of parathyroid hormone on cortical porosity, non-enzymatic glycation and bone tissue mechanics in rats with type 2 diabetes mellitus

Bone ◽  
2016 ◽  
Vol 82 ◽  
pp. 116-121 ◽  
Author(s):  
G.M. Campbell ◽  
S. Tiwari ◽  
C. Hofbauer ◽  
A.-K. Picke ◽  
M. Rauner ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Parathyroid Hormone ◽  
Bone Tissue ◽  
Tissue Mechanics ◽  
Cortical Porosity

scholarly journals STATE OF PARADONT IN RATS AFTER IMPLANTOLOGICAL OPERATION ON THE BACKGROUND OF SUGAR DIABETES 2 TYPE

2017 ◽  
Vol 21 (6) ◽  
pp. 313-316
Author(s):  
Svetlana Aleksandrovna Dem'yanenko ◽  
M. G Drobyazko ◽  
P. D Rozhko
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Alkaline Phosphatase ◽  
Type 2 Diabetes Mellitus ◽  
Acid Phosphatase ◽  
Bone Tissue ◽  
Pathological Condition ◽  
Dental Implantation

In rats with experimental (protamine) type 2 diabetes mellitus (DM2), the level of lysozyme and catalase decreases, the activity of urease, the degree of dysbiosis and the activity of elastase increase. Dental implantation on the background of CD2 aggravates the pathological condition of the gums. In the periodontal bone tissue of rats with CD2, a decrease in the activity of alkaline phosphatase (ACF) and an increase in the activity of acid phosphatase (CF), which reduces the mineralizing index (FF/CF) by more than 2.5 times. An increase in the activity of elastase in bone tissue by 36% indicates the development of inflammation. Dental implantation on the background of CD2 does not improve the condition of the periodontal bone tissue.

scholarly journals Condition of bone tissue in postmenopausal women with type 2 diabetes mellitus of Buryat population

2020 ◽  
Vol 22 (5) ◽  
pp. 436-443
Author(s):  
Tatiana P. Bardymova ◽  
Maksim V. Mistiakov ◽  
Galina P. Yagelskaya
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Postmenopausal Women ◽  
Bone Tissue ◽  
Bone Remodeling ◽  
Comparison Group ◽  
Russian Population ◽  
Type 2 Dm

BACKGROUND: In most countries, there is a rapid increase in the population of patients with type 2 Diabetes Mellitus (DM). Bone changes in postmenopausal women with type 2 DM are associated with increased bone mineral density (BMD). The study of metabolic processes in bone tissue in comorbid pathology in different ethnic groups is continuing. AIMS: To study the concentration of markers of bone remodeling and indicators of BMD in postmenopausal women with type 2 DM of the Buryat population. MATERIALS AND METHODS: Thirty-nine postmenopausal women with type 2 DM (22 Russian population and 17 Buryat population) were examined. The comparison group consisted of 42 postmenopausal women (21 Russian population and 21 - Buryat population). The study of BMD in the lumbar spine (L1-L4), the femoral neck (Neck), and the proximal femur (Total hip) was performed using dual-energy X-ray absorptiometry. Parameters of osteocalcin (OC), type 1 N-terminal procollagen propeptide (P1NP), C-terminal telopeptides of type I collagen (-Cross laps), 25(OH) vitamin D and ionized calcium were evaluated. RESULTS: The presented study revealed a simultaneous increase in osteosynthesis: ОС (p=0.048) and P1NP (p=0.016) and in the bone resorption marker -Cross laps (p=0.020) accompanied by the absence of changes in BMD in women with type 2 DM in the postmenopausal period of the Buryat population relative to women with type 2 DM in the postmenopausal state of the Russian population. A decrease in osteosynthesis parameters (ОC, p=0.021; P1NP, p=0.029) with an increase in BMD L1-L4 (p=0.024) and BMD Total hip (p=0.039) in postmenopausal women with type 2 DM of the Buryat population was found relative to the women of the Buryat population in comparison group. CONCLUSIONS: The state of bone tissue in postmenopausal women with type 2 DM of the Buryat population is characterized by the activation of bone remodeling processes.

scholarly journals EXPERIMENTAL SUBSTANTIATION OF PARODONTROTECTOR EFFICIENCY OF THE COMPLEX OF DRUGS IN RATS WITH TYPE 2 DIABETES DURING ORTHODONTIC TEETH RELOCATION

2020 ◽  
Vol 16 (3) ◽  
pp. 46-52
Author(s):  
Svetlana Dem'yanenko ◽  
Marina Morozova ◽  
Andrey Morozov ◽  
Anastasiya Denga ◽  
Olga Makarenko
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Bone Tissue ◽  
Tooth Movement ◽  
Orthodontic Tooth Movement ◽  
Protective Effects ◽  
Experimental Animals ◽  
Patients With Diabetes

Introduction. Pathological changes in the periodontium in people with diabetes mellitus, according to some data, are aggravated after orthodontic intervention, which dictates the need to carry out preventive measures, the effectiveness of which will determine the quality of orthodontic treatment. The aim of this study was to study the periodontal protective effect of two domestic antidisbiotic drugs containing plant extracts, vitamins, calcium and phosphorus salts. Methodology. The experiments were carried out on white Wistar rats, divided into 5 groups. The gums and periodontal bone tissue were isolated. The activity of urease, lysozyme and the content of hyaluronic acid was determined in the gingival homogenate, and the degree of dysbiosis was calculated. In the homogenate of the periodontal bone tissue, the activity of alkaline and acid phosphatases was determined, the mineralization index and the degree of mineralization, as well as the content of calcium and protein, were calculated. Results. The obtained results of our study have convincingly proved the pronounced periodontal protection efficacy of antidisbiotic drugs for oral applications of the plates "CM-2" and the drug Enoant polyphenols. The proposed therapeutic and prophylactic complex inhibits inflammation, destruction of bone tissue and the development of dysbiosis, along with the manifestation of pronounced adaptogenic, antimicrobial and periodontal protective effects in experimental animals against the background of the development of type 2 diabetes mellitus and orthodontic tooth movement. Conclusion. The proposed therapeutic and prophylactic complex inhibits inflammation, destruction of bone tissue and the development of dysbiosis in experimental animals against the background of the development of type 2 diabetes mellitus and orthodontic tooth movement. The obtained results of the experimental study serve as the basis for the recommendation of the investigated complex, including the local application of plates with herbal extracts, vitamins, calcium and microelements, along with the systemic use of grape polyphenol concentrate, in an orthodontic clinic for patients with diabetes mellitus.

scholarly journals Immunohistochemical features of the bone tissue of the lower extremities in patients with type 2 diabetes mellitus

2022 ◽  
Vol 24 (5) ◽  
pp. 448-455
Author(s):  
A. Yu. Tokmakova ◽  
E. A. Kogan ◽  
E. L. Zaitseva ◽  
S. A. Demura ◽  
N. V. Zharkov ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Bone Resorption ◽  
Bone Tissue ◽  
Immunohistochemical Study ◽  
Control Group ◽  
Diabetic Neuroosteoarthropathy ◽  
Group 1

Background: Diabetic neuroosteoarthropathy is a serious disabling complication of diabetes mellitus, which, in the absence of timely correct treatment, can lead to high amputations of the affected limb. At present, the reasons and mechanism of the development of Charcot’s foot are not completely clear. It is extremely important to determine the pathophysiological mechanisms of DNOAP formation and to search for reliable markers-predictors of this pathology.Aim: To study the immunohistochemical characteristics of the bone tissue of the lower extremities in patients with diabetic neuroosteoarthropathy in comparison with patients with diabetes mellitus without this pathology.Materials and methods: During the foot surgery, a bone fragment of the foot was harvested for immunohistochemical study of receptor markers for PINP, PIIINP, and RAGE in the group of patients with DNOAP compared with the control group.Results: The study included 20 patients with type 2 diabetes mellitus and were divided into 2 groups: 10 patients with DNOAP made up group 1, 10 patients without DNOAP — group 2.Patients in both groups were comparable in AGE, experience with type 2 diabetes, and glycemic control.During the immunohistochemical study, a significant increase in the staining intensity of receptor markers for PINP, PIIINP, and AGE was recorded in the group of patients with DNOAP compared with the control group (p <0.05).Conclusion: For the first time, an immunohistochemical study of markers of bone resorption and AGE was carried out in persons with DNOAP. The results obtained indicate impaired collagen formation and, as a consequence, impaired bone formation and bone resorption in patients with DNOAP: in group 1, a statistically significant increase in the expression of PINP, PIIINP, and RAGE was revealed.

scholarly journals Systemic Parathyroid Hormone Enhances Fracture Healing in Multiple Murine Models of Type 2 Diabetes Mellitus

JBMR Plus ◽  
2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Kareme D Alder ◽  
Andrew HA White ◽  
Yeon‐Ho Chung ◽  
Inkyu Lee ◽  
JungHo Back ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Parathyroid Hormone ◽  
Fracture Healing ◽  
Murine Models

scholarly journals Compromised cortical bone compartment in type 2 diabetes mellitus patients with microvascular disease

2016 ◽  
Vol 174 (2) ◽  
pp. 115-124 ◽  
Author(s):  
Vikram V Shanbhogue ◽  
Stinus Hansen ◽  
Morten Frost ◽  
Niklas Rye Jørgensen ◽  
Anne Pernille Hermann ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Bone Turnover ◽  
Cortical Bone ◽  
Biochemical Markers ◽  
Microvascular Disease ◽  
Cortical Porosity ◽  
Markers Of Bone Turnover

Objective and designPatients with type 2 diabetes mellitus (T2D) have an increased fracture risk despite a normal or elevated bone mineral density (BMD). The aim of this cross-sectionalin vivostudy was to assess parameters of peripheral bone microarchitecture, estimated bone strength and bone remodeling in T2D patients with and without diabetic microvascular disease (MVD+ and MVD− respectively) and to compare them with healthy controls.MethodsFifty-one T2D patients (MVD+ group:n=25) were recruited from Funen Diabetic Database and matched for age, sex and height with 51 healthy subjects. High-resolution peripheral quantitative tomography (HR-pQCT) was used to assess bone structure at the non-dominant distal radius and tibia. Estimated bone strength was calculated using finite element analysis. Biochemical markers of bone turnover were measured in all participants.ResultsAfter adjusting for BMI, MVD+ patients displayed lower cortical volumetric BMD (P=0.02) and cortical thickness (P=0.02) and higher cortical porosity at the radius (P=0.02) and a trend towards higher cortical porosity at the tibia (P=0.07) compared to controls. HR-pQCT parameters did not differ between MVD− and control subjects. Biochemical markers of bone turnover were significantly lower in MVD+ and MVD− patients compared to controls (allP<0.01). These were no significant correlations between disease duration, glycemic control (average glycated hemoglobin over the previous 3 years) and HR-pQCT parameters.ConclusionCortical bone deficits are not a characteristic of all T2D patients but of a subgroup characterized by the presence of microvascular complications. Whether this influences fracture rates in these patients needs further investigation.

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