Biochemical markers of connective tissue metabolism in the diagnostics of respiratory diseases in human and animals: retrospective analysis (1984–2010)

The aim: to analyze the literature data for the period from 1984 to 2010 on the use of biochemical markers of disorders of connective tissue metabolism in diseases of the respiratory system in humans and animals. Materials and methods. The research was conducted by the method of scientific literature open source analysis: PubMed, Elsevier, electronic resources of the National Library named after V.I. Vernadsky (1984–2010). Results. In the case of diseases of the respiratory system in humans, the pathogenesis of pneumonia is the development of inflammation in the interstitial, peribronchial, perivascular and perilobular connective tissue, lymphatic vessels of the lungs, followed by involvement of alveoli and bronchioles in the inflammation. The morphological basis of these changes may be pneumofibrosis and pneumosclerotic changes. In the chronic course of pneumonia, chronic obstructive pulmonary disease develops. This pathology is closely related to the action of inflammatory cytokines that regulate connective tissue proliferation. Similar studies were performed on eosinophilic bronchopneumonia in dogs, but the material for the study was bronchoalveolar lavage. The current method of diagnosing respiratory diseases using cytokines (interleukin-4, interferon-γ) and bronchoalveolar lavage has no diagnostic information in chronic bronchitis and bronchial asthma in cats. Fundamental studies of connective tissue biopolymers in clinically healthy and bronchopneumonia piglets have recently been conducted in veterinary medicine. Conclusions. Recently, in medicine of particular interest to researchers is the determination of the content in biological fluids of indicators of connective tissue metabolism (hydroxyproline, glycosaminoglycans, glycoproteins, sialic acids) to diagnose diseases of the respiratory system. To diagnose connective tissue disorders in lung diseases in medical practice use indicators of oxyproline in serum and urine. Oxyproline is one of the most important components of lung collagen. An increase in the content of free oxyproline in the blood indicates an increased rate of collagen breakdown in the lung tissue. Analysis of oxyproline fractions, as indicators of the direction of collagen metabolism, allows to assess the condition of the connective tissue of the lungs and can serve as a prognostic criterion for the course of the disease. Thus, the indicators of connective tissue metabolism showed significant diagnostic information, which allowed to recommend them for use in the practice of veterinary medicine.

Periarticular lesions as actual problem of general practice: modern possibilities of diagnosis and boosting effectiveness of treatment

Background. Lesions of extra-articular soft tissues occupy a leading place in the structure of diseases of the musculoskeletal system in primary health care. At the same time, insuffcient attention is paid to this pathology, which leads to a decrease in the quality of care for patients with extra-articular pathology.Objective. Increasing the awareness of general practitioners about the clinical forms of extra-articular soft tissue diseases, current approaches to diagnosis and treatment.Basic provisions. The article presents the characteristics of the main forms of periarticular lesions: periarthritis, incl. painful shoulder, tendonitis, tenosynovitis, capsulitis, bursitis. The leading mechanisms of periarticular disorders are presented, the clinical picture and diagnostic signs of particular forms are described. The role of modern methods of visualization of periarticular lesions using ultrasound and MRI is noted. The main approaches to the drug therapy of periarticular disorders are presented, including use of slow-acting symptom-modifying drugs (SYSADOA). The authors present their own data demonstrating the connective tissue metabolism disturbance in periarticular disorders as well as the effectiveness of the drug Alflutop in the treatment of periarticular lesions of a ‘mechanical’ nature.Conclusions. Primary forms of periarticular disorders are a consequence of microtraumatization and can be attributed to ‘mechanical’ types of damage. The ultrasound is pivotal in the diagnosis and evaluation the severity of the lesion and its origin. Biomarkers of connective tissue damage can be detected in the blood of patients with periarticular disorders. The treatment results can be improved with drugs from the SYSADOA group.

Indices of connective tissue metabolism, their interconnection in patients with 5D stage chronic kidney disease and in patients with anterior abdominal wall hernias

Objective. To study the interconnection between the indices of matrix metalloproteinases (MMPs) of type I collagen terminal telopeptides in patients with end-stage chronic kidney disease (CKD) and in patients with anterior abdominal wall hearnias.Materials and methods. 39 patients with CKD stage 5D, 24 patients with primary anterior abdominal wall hernias and 25 patients of the comparison group without visual signs of connective tissue dysplasia were included into the prospective study. The concentrations of the levels of MMP-1, MMP-2, MMP-9, tissue inhibitor of metalloproteinase 1 (TIMP-1), TIMP-3, N-terminal telopeptide NTX-N, C-terminal telopeptide CTX-C were determined in plasma using the enzyme immunoassay (ELISA).Results. The end-stage patients with CKD and the patients with anterior abdominal wall hernias showed no statistically signifcant biochemical indices of ongoing bone tissue destruction based on the levels of terminal telopeptides NTX-N and CTX-C. There are statistically signifcant increases in the levels of MMP-1, MMP-2, MMP-9 (p ˂ 0.001) in the CKD stage 5D patients and major TIMP-1 and TIMP-3 (p ˂ 0.001) in relation to the comparison group. These indices were comparable with the changes in the connective tissue of the patients with primary anterior abdominal wall hernias.Conclusion. The obtained results indicate disturbances in the regulation of the synthesis and structural relationships of connective tissue in CKD stage 5D patients and in patients with primary anterior abdominal wall hernias. CKD stage 5D patients and primary anterior abdominal wall hernias reveal identical direct correlations in the indices of connective tissue metabolism according to NTX-N, MMP-1 and MMP-9, TIMP-1, which indicates similar disturbances in the regulation of the synthesis and structural disorders in connective tissue.

Systematic analysis of molecular biological mechanisms for supporting connective tissue metabolism with chondroitin sulfate

Objective: to analyze the roles of undifferentiated connective tissue dysplasia (UCTD) in the development of cartilage and ligamentous apparatus diseases.Material and methods. This paper presents the results of analyzing the literature on fundamental and clinical studies of relationships between chondroitin sulfate (CS) and connective tissue (CT) disease. A total of 922 publications on the relationship between CT dysplasia and CS and 2249 publications on CS receptor molecules were analyzed. These arrays of publications were analyzed using topological and metric approaches to data analysis.Results and discussion. The genetic predisposition to UCTD is substantially aggravated by inadequate nutrition that leads to deficiency of certain micronutrients that support CT reconstructive processes. The paper presents the results of a systematic analysis of prospects for the use of drugs based on standardized CS substances in patients with UCTD. CS is a material for CT reconstruction. CS increases the activity of growth factors and reduces CT inflammatory destruction (inhibition of the secretion of histamine, pro-inflammatory chemokines, Toll-like receptors, and the NF-κB cascade through exposure to the CD44 receptor).Conclusion. The pharmacological effects of CS indicate the importance of using standardized CS forms in the treatment of patients with UCTD.

The role of indicators of connective tissue metabolism in morpho-biochemical screening of purulent-inflammatory processes in cats

The article presents data on the role of indicators of connective tissue metabolism in morphobiochemical screening of purulent-inflammatory processes in cats. It was found that the acute purulent-inflammatory process in cats proceeds with significant shifts in clinical, morphological and biochemical blood parameters. With inflammation in cats, the level of sialic acids, the content of hexoses associated with proteins and the redistribution of their fractions in the blood serum at the late stages of the pathological process increases in the direction of increasing the hexoses of glycoproteins. It is shown that the determination of indicators of connective tissue metabolism during morpho-biochemical screening of purulent-inflammatory processes of surgical profile in cats will improve the diagnosis, determination of the severity of the course, prediction of the outcome and existing methods of their treatment.