37 research outputs found
The results of prosthetic plasty of the anterior abdominal wall at the treatment of postoperative ventral hernias
We studied the results of treatment of 167 patients with postoperative ventral hernias (POVH) with use of mesh endoprosthesis. Basic group included 22 (13,0 Β± 2,6 %) patients, who had plasty of anterior abdominal wall with use of proposed method. This method is a modification of Β«on layΒ» plasty. The first group of clinical comparison included 95 (57,0 Β± 3,8 %) patients operated with Β«on layΒ» method. The second group of clinical comparison included 50 (30,0 Β± 3,5 %) patients operated with Β«sub layΒ» method. Morphological study of hernial sac was conducted, the indications to the new method of plasty were revealed, its efficiency in comparison with Β«on layΒ» plasty was proved. The article reviews frequency and character of complications and quality of life of patients after application of various kinds of prosthetic plasty. We developed an algorithm for choosing the method of abdominal wall plasty
Analysis of homocysteine and thiol-containing compounds using the heterocyclic disulfides
ΠΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΠ΅ Π½ΠΈΠ·ΠΊΠΎΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΠ΅ Π°ΠΌΠΈΠ½ΠΎΡΠΈΠΎΠ»Ρ, ΡΠ°ΠΊΠΈΠ΅ ΠΊΠ°ΠΊ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½, Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ ΠΌΠ°Π»ΠΎΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΡΠΌ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΠ΅ΠΌ Π² ΡΠ»ΡΡΡΠ°ΡΠΈΠΎΠ»Π΅ΡΠΎΠ²ΠΎΠΌ ΠΈ Π²ΠΈΠ΄ΠΈΠΌΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ ΠΈΠ·Π»ΡΡΠ΅Π½ΠΈΡ, ΠΏΠΎΡΡΠΎΠΌΡ Π΄Π»Ρ ΠΈΡ
Π°Π½Π°Π»ΠΈΠ·Π° Π² Π±ΠΎΠ»ΡΡΠΈΠ½ΡΡΠ²Π΅ ΡΠ»ΡΡΠ°Π΅Π² ΠΏΡΠΈΠΌΠ΅Π½ΡΡΡ Π΄Π΅ΡΠΈΠ²Π°ΡΠΈΠ·Π°ΡΠΈΡ. ΠΠ΅ΡΠΈΠ²Π°ΡΠΈΠ·ΠΈΡΡΡΡΠΈΠΉ Π°Π³Π΅Π½Ρ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΡΠ΅Ρ Ρ ΡΠΈΠΎΠ»ΡΠ½ΠΎΠΉ Π³ΡΡΠΏΠΏΠΎΠΉ Π°Π½Π°Π»ΠΈΡΠ° Ρ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡ, ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎ ΠΏΠΎΠ³Π»ΠΎΡΠ°ΡΡΠ΅Π³ΠΎ Π² Π΄Π»ΠΈΠ½Π½ΠΎΠ²ΠΎΠ»Π½ΠΎΠ²ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠΏΠ΅ΠΊΡΡΠ°. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ Π΄Π΅ΡΠΈΠ²Π°ΡΠΈΠ·ΠΈΡΡΡΡΠΈΡ
Π°Π³Π΅Π½ΡΠΎΠ² ΡΠ°ΡΡΠΎ ΠΏΡΠΈΠΌΠ΅Π½ΡΡΡΡΡ Π³Π΅ΡΠ΅ΡΠΎΡΠΈΠΊΠ»ΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ. ΠΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ Π°Π½Π°Π»ΠΈΠ·Π° Ρ ΠΈΡ
ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ, ΠΊΠ°ΠΊ ΠΏΡΠ°Π²ΠΈΠ»ΠΎ, ΠΎΡΠ»ΠΈΡΠ°ΡΡΡΡ ΠΏΡΠΎΡΡΠΎΡΠΎΠΉ ΠΈ ΡΠΎΡΠ½ΠΎΡΡΡΡ. ΠΠ΄Π½Π°ΠΊΠΎ ΡΠΈΡΠΎΠΊΠΎ ΠΏΡΠΈΠΌΠ΅Π½ΡΠ΅ΠΌΡΠ΅ Π² Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠ°ΠΊΡΠΈΠΊΠ΅ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ, ΡΠ°ΠΊΠΈΠ΅ ΠΊΠ°ΠΊ Π΄ΠΈΡΠΈΠΎΠ΄ΠΈΠΏΠΈΡΠΈΠ΄ΠΈΠ½ ΠΈ 5,5β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ-(2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·ΠΎΠΉΠ½Π°Ρ ΠΊΠΈΡΠ»ΠΎΡΠ°), ΠΈΠΌΠ΅ΡΡ ΡΡΠ΄ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΊΠΎΠ², ΠΊ ΡΠΈΡΠ»Ρ ΠΊΠΎΡΠΎΡΡΡ
ΠΎΡΠ½ΠΎΡΡΡΡΡ ΡΠ·ΠΊΠΈΠΉ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½ Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ pH, ΠΏΡΠΈ ΠΊΠΎΡΠΎΡΡΡ
Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ ΠΌΠΎΠ³ΡΡ Π±ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ, Π° ΡΠ°ΠΊΠΆΠ΅ Π½ΠΈΠ·ΠΊΠ°Ρ ΠΊΠΎΠ½ΡΡΠ°ΡΡΠ½ΠΎΡΡΡ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Π°ΠΊΡΠΈΠΈ. ΠΠΎΡΡΠΎΠΌΡ ΠΏΠΎΠΈΡΠΊ Π½ΠΎΠ²ΡΡ
Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π°Π³Π΅Π½ΡΠΎΠ² ΠΏΡΠΎΠ΄ΠΎΠ»ΠΆΠ°Π΅ΡΡΡ. ΠΠ»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½Π° ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ 2,2β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Π±Π΅Π½Π·ΠΎΠΊΡΠ°Π·ΠΎΠ»] ΠΈ 8,8β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Ρ
ΠΈΠ½ΠΎΠ»ΠΈΠ½]. ΠΠ·ΡΡΠ΅Π½Π° ΠΊΠΈΠ½Π΅ΡΠΈΠΊΠ° ΡΠ΅Π°ΠΊΡΠΈΠΈ ΠΌΠ΅ΠΆΠ΄Ρ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½ΠΎΠΌ ΠΈ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΡΠΌΠΈ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Π°ΠΌΠΈ. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ pH Π½Π° ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠΈ Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΠΏΡΠΎΡΠ΅ΠΊΠ°Π½ΠΈΡ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Π°ΠΊΡΠΈΠΈ. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Ρ ΡΠΎΡΠ½ΡΠ΅ ΠΈ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½Π° ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ, ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΠΊΠ°ΠΏΠΈΠ»Π»ΡΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΎΡΠ΅Π·Π° (ΠΠ), Π²ΡΡΠΎΠΊΠΎΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ½ΠΎΠΉ Ρ
ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΠΈΠΈ (ΠΠΠΠ₯) ΠΈ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠΎ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ Π΄Π΅ΡΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ (ΠΏΡΠ΅Π΄Π΅Π» ΠΎΠ±Π½Π°ΡΡΠΆΠ΅Π½ΠΈΡ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½Π° 1.1Β·10-6-7.8Β·10-6 Π, ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΡΡΠ°Π½Π΄Π°ΡΡΠ½ΠΎΠ΅ ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠ΅ 1.5-4.6 %). ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΡΠ΅ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ ΡΠ°ΠΊΠΆΠ΅ Π±ΡΠ»ΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ ΠΏΡΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠΈ ΡΡΠ»ΡΡΠ³ΠΈΠ΄ΡΠΈΠ»ΡΠ½ΡΡ
Π³ΡΡΠΏΠΏ Π² ΠΎΠ±ΡΠ°Π·ΡΠ΅ ΡΠ΅Π»ΠΎΠ²Π΅ΡΠ΅ΡΠΊΠΎΠΉ ΡΡΠΈΠ½Ρ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΏΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ 2,2β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Π±Π΅Π½Π·ΠΎΠΊΡΠ°Π·ΠΎΠ»Π°] ΠΈ 8,8β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Ρ
ΠΈΠ½ΠΎΠ»ΠΈΠ½Π°] ΠΈ ΠΏΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½Π½ΠΎΠ³ΠΎ Π² Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠ°ΠΊΡΠΈΠΊΠ΅ 4,4β²-Π΄ΠΈΡΠΈΠΎΠ΄ΠΈΠΏΠΈΡΠΈΠ΄ΠΈΠ½Π°, ΠΎΠΊΠ°Π·Π°Π»ΠΈΡΡ Π±Π»ΠΈΠ·ΠΊΠΈ, ΡΡΠΎ ΡΠΊΠ°Π·ΡΠ²Π°Π΅Ρ Π½Π° ΠΏΡΠΈΠΌΠ΅Π½ΠΈΠΌΠΎΡΡΡ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΡΡ
ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ² Π² Π°Π½Π°Π»ΠΈΠ·Π΅ ΡΠ΅Π°Π»ΡΠ½ΡΡ
ΠΎΠ±ΡΠ΅ΠΊΡΠΎΠ².Biological low-molecular aminothiols, such as homocysteine, are characterized by the weak absorption in the UV β visible range. Therefore, aminothiols analysis requires using thiol-specific chemosensors or derivatization procedure. Heterocyclic disulfides belong to a large group of derivatizing agents. However, the disulfides widely used in the analytical practice, such as 5,5'-dithiobis-(2-nitrobenzoic acid), have several disadvantages: limited acceptable pH range, low sensitivity, susceptibility to hydrolisys. Hence, the search for the effective derivatizing agents continues. In the current work, 2,2'-dithiobis[benzoxazole] and 8,8'-dithiobis-quinoline disulfides were used for the analysis of homocysteine. Precise and sensitive methods (homocysteine detection limit in the range of 1.1Β·10-6β7.8Β·10-6 M, relative standard deviation in the range of 1.5β4.6%) for the homocysteine determination have been developed, including spectrophotometric method, capillary electrophoresis (CE), high-performance liquid chromatography (HPLC) and kinetic method with the spectrophotometric detection. The proposed disulfides have also been successfully used in the analysis of sulfhydryl groups content in the sample of human urine
Rare cases in herniology: The contents of the hernia β part of the liver, metastatic carcinoma, a foreign body
Surgical treatment of patients with postoperative ventral hernias is one of the most pressing problems in herniology. Verification of the diagnosis of postoperative ventral hernia is usually not difficult. At the same time, there may be difficulties in diagnosis associated with determining the true size of the hernia orifices, the contents of the hernial sac. These moments areΒ determined by various factors: the location of the hernia on the anterior abdominal wall, the age, sex of the patient, as well as anamnesis of hernia and the volume of surgery previously performed. One of the very rare situations in external abdominal hernias is the situation when the content ofΒ the hernial sac is the part of the parenchymal organ, the tumor process, as well as foreign bodies. The study presents the observation materials of three patients admitted for diagnosis and treatment to the surgical hospital clinics of Irkutsk State Medical University. When examined and treated, it was found that in one case the content of the hernia sac included a part of the left lobe of the liver, in another observation, the inguinal hernia sac contained metastatic carcinoma, in the third case β a foreign body was found. All patients underwent surgery (hernioplasty, hernioplasty). Diagnosis of hernia of the anterior abdominal wall was confirmed. A literary search was made for rare clinical examples in herniology. In the world literature, there are only eight observations when the content of the hernia sac was a part of the lobe of the liver; the presence of metastatic carcinoma and a free foreign body we found as single observations described by known specialists in herniology
Application of surface brachytherapy in treatment of classic Kaposiβs sarcoma relapse
The authors describe a patient of 63 years with a classic Kaposiβs sarcoma relapse, having contraindi -Β cations for cytostatic therapy. They also present literature data concerning the etiology, pathogenesis,Β diagnosis and treatment of disease
On the Opportunities of Using the Indices of Lipid Peroxidation β Antioxidant Defense System in the Diagnostics of Varicose Veins of Small Pelvis in Women
Background: The prevalence of varicose veins of small pelvic veins in women of reproductive age varies widely β from 5.4 to 80 %, due to the low specificity and low sensitivity of clinical diagnostic techniques, and the absence of biomarkers that can be used to identify the formation and progression of varicose veins of small pelvic veins in women.Aims: To identify changes in the levels of parameters of the system βlipid peroxidation β antioxidant protectionβ with the development of varicose veins of the pelvis in women, as well as the possibility of their diagnostic use.Materials and methods: We examined 200 women with clinical signs of varicose veins of small pelvis. Control group included 30 women without any pathology of venous system. Treatment group included 137 women with varicose veins of small pelvis: with mild degree of severity β 39 women, with moderate degree of severity β 65 women, with severe degree of severity β 33 women. We performed comparative analysis of lipid peroxidation β antioxidant defense system in women with and without varicose veins of small pelvis taking into account the severity degrees of pathological process.Results: We obtained the most informative indices for lipid peroxidation β antioxidant defense processes in blood of women with varicose veins of small pelvis: concentration of diene conjugate (DC) for the mild degree of severity of pathological process, lipid hydroperoxide (LHP), DC and malonic dialdehyde (MDA) β for the moderate and severe degree of severity, and also changes in the activity of antioxidant enzymes with increase of the severity of the disease. Assessment of the level of catalase (Cat) and glutathione peroxidase (GP) showed their highest informative value at the mild degree of severity. Concentrations of glutathione reductase (GR), glutathione S-transferase (GST) and reduced glutathione (GSH) are more statistically significant markers for severe forms of pathological process.Conclusions: Our research showed the relevance and advisability of the studying the levels of lipid peroxidation β antioxidant defense indices in women with varicose veins of small pelvis. We registered the highest diagnostic value of DC, Cat and GP in the beginning of the disease and of LHP, DC, MDA, GR, GST and GSH β at severe forms of the pathological process. We obtained reference values for DC, MDA, Cat, SOD and GP concentration that can be considered as the predictors of the development of varicose veins of small pelvis
The Impact of eHealth on the Quality and Safety of Health Care: A Systematic Overview
Aziz Sheikh and colleagues report the findings of their systematic overview that assessed the impact of eHealth solutions on the quality and safety of health care
The Second International Research and Practical Conference for Polygraphologists, Graphologists, Profilers and Security Professionals "Real Practice of Polygraphologists"
The article presents the results of research and practical conference "Real Practice of Polygraphologists". The overview of the reports made by the experts-polygraphologists, criminalists, leading researchers in the field of psychophysiological assessment of reactions is presented. The main directions of development of polygraphology as applied branch of psychophysiology is determined. The relevant topics for discussion at the next conference are outlinedΠ ΡΡΠ°ΡΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΡΠ°Π±ΠΎΡΡ Π½Π°ΡΡΠ½ΠΎ-ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΊΠΎΠ½ΡΠ΅ΡΠ΅Π½ΡΠΈΠΈ Β«Π Π΅Π°Π»ΡΠ½Π°Ρ ΠΏΡΠ°ΠΊΡΠΈΠΊΠ° ΡΠΏΠ΅ΡΠΈΠ°Π»ΠΈΡΡΠΎΠ²-ΠΏΠΎΠ»ΠΈΠ³ΡΠ°ΡΠΎΠ»ΠΎΠ³ΠΎΠ²Β». ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ ΠΎΠ±Π·ΠΎΡ Π²ΡΡΡΡΠΏΠ»Π΅Π½ΠΈΠΉ Π΄ΠΎΠΊΠ»Π°Π΄ΡΠΈΠΊΠΎΠ² - ΡΠΊΡΠΏΠ΅ΡΡΠΎΠ²-ΠΏΠΎΠ»ΠΈΠ³ΡΠ°ΡΠΎΠ»ΠΎΠ³ΠΎΠ², ΠΊΡΠΈΠΌΠΈΠ½Π°Π»ΠΈΡΡΠΎΠ², Π²Π΅Π΄ΡΡΠΈΡ
Π½Π°ΡΡΠ½ΡΡ
ΡΠΎΡΡΡΠ΄Π½ΠΈΠΊΠΎΠ² Π² ΡΡΠ΅ΡΠ΅ ΠΏΡΠΈΡ
ΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΎΡΠ΅Π½ΠΊΠΈ ΡΠ΅Π°ΠΊΡΠΈΠΉ. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΏΠΎΠ»ΠΈΠ³ΡΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΊΠ°ΠΊ ΠΏΡΠΈΠΊΠ»Π°Π΄Π½ΠΎΠΉ ΠΎΡΡΠ°ΡΠ»ΠΈ ΠΏΡΠΈΡ
ΠΎΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ. ΠΠ°ΠΌΠ΅ΡΠ΅Π½Ρ Π°ΠΊΡΡΠ°Π»ΡΠ½ΡΠ΅ ΡΠ΅ΠΌΡ Π΄Π»Ρ ΠΎΠ±ΡΡΠΆΠ΄Π΅Π½ΠΈΡ Π½Π° ΡΠ»Π΅Π΄ΡΡΡΠ΅ΠΉ ΠΊΠΎΠ½ΡΠ΅ΡΠ΅Π½ΡΠΈ
ΠΠΠΠ ΠΠΠΠΠΠΠΠ ΠΠΠΠΠ¦ΠΠ‘Π’ΠΠΠΠ Π Π’ΠΠΠΠ‘ΠΠΠΠ ΠΠΠ©ΠΠ₯ Π‘ΠΠΠΠΠΠΠΠΠ Π‘ Π‘ΠΠΠΠ¬ΠΠΠΠΠΠΠΠ ΠΠΠ’ΠΠ ΠΠ¦ΠΠΠΠΠ§ΠΠ‘ΠΠΠ₯ ΠΠΠ‘Π£ΠΠ¬Π€ΠΠΠΠ
Biological low-molecular aminothiols, such as homocysteine, are characterized by the weak absorption in the UV β visible range. Therefore, aminothiols analysis requires using thiol-specific chemosensors or derivatization procedure. Heterocyclic disulfides belong to a large group of derivatizing agents. However, the disulfides widely used in the analytical practice, such as 5,5'-dithiobis-(2-nitrobenzoic acid), have several disadvantages: limited acceptable pH range, low sensitivity, susceptibility to hydrolisys. Hence, the search for the effective derivatizing agents continues. In the current work, 2,2'-dithiobis[benzoxazole] and 8,8'-dithiobis-quinoline disulfides were used for the analysis of homocysteine. Precise and sensitive methods (homocysteine detection limit in the range of 1.1Β·10-6β7.8Β·10-6 M, relative standard deviation in the range of 1.5β4.6%) for the homocysteine determination have been developed, including spectrophotometric method, capillary electrophoresis (CE), high-performance liquid chromatography (HPLC) and kinetic method with the spectrophotometric detection. The proposed disulfides have also been successfully used in the analysis of sulfhydryl groups content in the sample of human urine.Keywords: homocysteine, aminothiols, 2,2'-dithiobis[benzoxazole], 8,8'-dithiobis-quinolineΒ DOI: http://dx.doi.org/10.15826/analitika.2022.26.3.005Β A.A. Shcherbatykh1, O. I. Askalepova1, I. A. Estrin2Β 1Southern Federal University, Department of Chemistry,Zorge St. 7, 344090, Rostov-on-Don, Russian Federation2Rostov State Transport University,Β Rostovskogo Strelkovogo Polka Narodnogo Opolcheniya Sq. 2, 344038, Rostov-on-Don, Russian FederationΠΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΠ΅ Π½ΠΈΠ·ΠΊΠΎΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΠ΅ Π°ΠΌΠΈΠ½ΠΎΡΠΈΠΎΠ»Ρ, ΡΠ°ΠΊΠΈΠ΅ ΠΊΠ°ΠΊ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½, Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ ΠΌΠ°Π»ΠΎΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΡΠΌ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΠ΅ΠΌ Π² ΡΠ»ΡΡΡΠ°ΡΠΈΠΎΠ»Π΅ΡΠΎΠ²ΠΎΠΌ ΠΈ Π²ΠΈΠ΄ΠΈΠΌΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ ΠΈΠ·Π»ΡΡΠ΅Π½ΠΈΡ, ΠΏΠΎΡΡΠΎΠΌΡ Π΄Π»Ρ ΠΈΡ
Π°Π½Π°Π»ΠΈΠ·Π° Π² Π±ΠΎΠ»ΡΡΠΈΠ½ΡΡΠ²Π΅ ΡΠ»ΡΡΠ°Π΅Π² ΠΏΡΠΈΠΌΠ΅Π½ΡΡΡ Π΄Π΅ΡΠΈΠ²Π°ΡΠΈΠ·Π°ΡΠΈΡ. ΠΠ΅ΡΠΈΠ²Π°ΡΠΈΠ·ΠΈΡΡΡΡΠΈΠΉ Π°Π³Π΅Π½Ρ Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΡΠ΅Ρ Ρ ΡΠΈΠΎΠ»ΡΠ½ΠΎΠΉ Π³ΡΡΠΏΠΏΠΎΠΉ Π°Π½Π°Π»ΠΈΡΠ° Ρ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡ, ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎ ΠΏΠΎΠ³Π»ΠΎΡΠ°ΡΡΠ΅Π³ΠΎ Π² Π΄Π»ΠΈΠ½Π½ΠΎΠ²ΠΎΠ»Π½ΠΎΠ²ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠΏΠ΅ΠΊΡΡΠ°. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ Π΄Π΅ΡΠΈΠ²Π°ΡΠΈΠ·ΠΈΡΡΡΡΠΈΡ
Π°Π³Π΅Π½ΡΠΎΠ² ΡΠ°ΡΡΠΎ ΠΏΡΠΈΠΌΠ΅Π½ΡΡΡΡΡ Π³Π΅ΡΠ΅ΡΠΎΡΠΈΠΊΠ»ΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ. ΠΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ Π°Π½Π°Π»ΠΈΠ·Π° Ρ ΠΈΡ
ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ, ΠΊΠ°ΠΊ ΠΏΡΠ°Π²ΠΈΠ»ΠΎ, ΠΎΡΠ»ΠΈΡΠ°ΡΡΡΡ ΠΏΡΠΎΡΡΠΎΡΠΎΠΉ ΠΈ ΡΠΎΡΠ½ΠΎΡΡΡΡ. ΠΠ΄Π½Π°ΠΊΠΎ ΡΠΈΡΠΎΠΊΠΎ ΠΏΡΠΈΠΌΠ΅Π½ΡΠ΅ΠΌΡΠ΅ Π² Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠ°ΠΊΡΠΈΠΊΠ΅ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ, ΡΠ°ΠΊΠΈΠ΅ ΠΊΠ°ΠΊ Π΄ΠΈΡΠΈΠΎΠ΄ΠΈΠΏΠΈΡΠΈΠ΄ΠΈΠ½ ΠΈ 5,5β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ-(2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·ΠΎΠΉΠ½Π°Ρ ΠΊΠΈΡΠ»ΠΎΡΠ°), ΠΈΠΌΠ΅ΡΡ ΡΡΠ΄ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΊΠΎΠ², ΠΊ ΡΠΈΡΠ»Ρ ΠΊΠΎΡΠΎΡΡΡ
ΠΎΡΠ½ΠΎΡΡΡΡΡ ΡΠ·ΠΊΠΈΠΉ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½ Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ pH, ΠΏΡΠΈ ΠΊΠΎΡΠΎΡΡΡ
Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ ΠΌΠΎΠ³ΡΡ Π±ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ, Π° ΡΠ°ΠΊΠΆΠ΅ Π½ΠΈΠ·ΠΊΠ°Ρ ΠΊΠΎΠ½ΡΡΠ°ΡΡΠ½ΠΎΡΡΡ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Π°ΠΊΡΠΈΠΈ. ΠΠΎΡΡΠΎΠΌΡ ΠΏΠΎΠΈΡΠΊ Π½ΠΎΠ²ΡΡ
Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π°Π³Π΅Π½ΡΠΎΠ² ΠΏΡΠΎΠ΄ΠΎΠ»ΠΆΠ°Π΅ΡΡΡ. ΠΠ»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½Π° ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ 2,2β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Π±Π΅Π½Π·ΠΎΠΊΡΠ°Π·ΠΎΠ»] ΠΈ 8,8β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Ρ
ΠΈΠ½ΠΎΠ»ΠΈΠ½]. ΠΠ·ΡΡΠ΅Π½Π° ΠΊΠΈΠ½Π΅ΡΠΈΠΊΠ° ΡΠ΅Π°ΠΊΡΠΈΠΈ ΠΌΠ΅ΠΆΠ΄Ρ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½ΠΎΠΌ ΠΈ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΡΠΌΠΈ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Π°ΠΌΠΈ. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ pH Π½Π° ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠΈ Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΠΏΡΠΎΡΠ΅ΠΊΠ°Π½ΠΈΡ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Π°ΠΊΡΠΈΠΈ. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Ρ ΡΠΎΡΠ½ΡΠ΅ ΠΈ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½Π° ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ, ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΠΊΠ°ΠΏΠΈΠ»Π»ΡΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΎΡΠ΅Π·Π° (ΠΠ), Π²ΡΡΠΎΠΊΠΎΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ½ΠΎΠΉ Ρ
ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΠΈΠΈ (ΠΠΠΠ₯) ΠΈ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠΎ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ Π΄Π΅ΡΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ (ΠΏΡΠ΅Π΄Π΅Π» ΠΎΠ±Π½Π°ΡΡΠΆΠ΅Π½ΠΈΡ Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½Π° 1.1Β·10-6-7.8Β·10-6 Π, ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΡΡΠ°Π½Π΄Π°ΡΡΠ½ΠΎΠ΅ ΠΎΡΠΊΠ»ΠΎΠ½Π΅Π½ΠΈΠ΅ 1.5-4.6 %). ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΡΠ΅ Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Ρ ΡΠ°ΠΊΠΆΠ΅ Π±ΡΠ»ΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ ΠΏΡΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠΈ ΡΡΠ»ΡΡΠ³ΠΈΠ΄ΡΠΈΠ»ΡΠ½ΡΡ
Π³ΡΡΠΏΠΏ Π² ΠΎΠ±ΡΠ°Π·ΡΠ΅ ΡΠ΅Π»ΠΎΠ²Π΅ΡΠ΅ΡΠΊΠΎΠΉ ΡΡΠΈΠ½Ρ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΏΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ 2,2β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Π±Π΅Π½Π·ΠΎΠΊΡΠ°Π·ΠΎΠ»Π°] ΠΈ 8,8β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Ρ
ΠΈΠ½ΠΎΠ»ΠΈΠ½Π°] ΠΈ ΠΏΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½Π½ΠΎΠ³ΠΎ Π² Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠ°ΠΊΡΠΈΠΊΠ΅ 4,4β²-Π΄ΠΈΡΠΈΠΎΠ΄ΠΈΠΏΠΈΡΠΈΠ΄ΠΈΠ½Π°, ΠΎΠΊΠ°Π·Π°Π»ΠΈΡΡ Π±Π»ΠΈΠ·ΠΊΠΈ, ΡΡΠΎ ΡΠΊΠ°Π·ΡΠ²Π°Π΅Ρ Π½Π° ΠΏΡΠΈΠΌΠ΅Π½ΠΈΠΌΠΎΡΡΡ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΡΡ
ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ² Π² Π°Π½Π°Π»ΠΈΠ·Π΅ ΡΠ΅Π°Π»ΡΠ½ΡΡ
ΠΎΠ±ΡΠ΅ΠΊΡΠΎΠ².ΠΠ»ΡΡΠ΅Π²ΡΠ΅ ΡΠ»ΠΎΠ²Π°: Π³ΠΎΠΌΠΎΡΠΈΡΡΠ΅ΠΈΠ½, Π°ΠΌΠΈΠ½ΠΎΡΠΈΠΎΠ»Ρ, 2,2β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Π±Π΅Π½Π·ΠΎΠΊΡΠ°Π·ΠΎΠ»], 8,8β²-Π΄ΠΈΡΠΈΠΎΠ±ΠΈΡ[Ρ
ΠΈΠ½ΠΎΠ»ΠΈΠ½]DOI: http://dx.doi.org/10.15826/analitika.2022.26.3.00