45 research outputs found
MYOPATHY AS A DESTABILIZING FACTOR OF MEAT QUALITY FORMATION
This review paper is devoted to myopathy of slaughter animals and poultry, and examines a relationship between fast growth of muscle tissue in hybrid pigs, broiler chickens and turkey, and high frequency of detection of spontaneous or idiopathic myopathies. The development of myopathy reduces consumer and technological properties of meat, and leads to emergence of different pathological conditions (PSE or RSE meat, Β«destructured meatΒ», Β«whiteΒ» or Β«greenΒ» meat, punctate hemorrhage, Β«wooden breastΒ» and others). Two types of myopathic conditions are examined: myopathies caused by stress in animals and nutritional myopathies, which contribution to meat quality deterioration seems to be determinative. It is shown that the basis of the mechanism of the myopathy development is the mechanism of the successive changes in muscle tissue: damage of cell membranes and release of mitochondrial calcium, which causes hypercontraction, dystrophic changes, atrophy and necrosis of muscle fibers. To alleviate the damaging effect of two types of myopathies, different substances-adaptogens (selenium, vitamin E, flavonoids and others) can be used. It is stated that the requirements of animals in adaptogens change with an increase in the indicators of their productivity.This review paper is devoted to myopathy of slaughter animals and poultry, and examines a relationship between fast growth of muscle tissue in hybrid pigs, broiler chickens and turkey, and high frequency of detection of spontaneous or idiopathic myopathies. The development of myopathy reduces consumer and technological properties of meat, and leads to emergence of different pathological conditions (PSE or RSE meat, Β«destructured meatΒ», Β«whiteΒ» or Β«greenΒ» meat, punctate hemorrhage, Β«wooden breastΒ» and others). Two types of myopathic conditions are examined: myopathies caused by stress in animals and nutritional myopathies, which contribution to meat quality deterioration seems to be determinative. It is shown that the basis of the mechanism of the myopathy development is the mechanism of the successive changes in muscle tissue: damage of cell membranes and release of mitochondrial calcium, which causes hypercontraction, dystrophic changes, atrophy and necrosis of muscle fibers. To alleviate the damaging effect of two types of myopathies, different substances-adaptogens (selenium, vitamin E, flavonoids and others) can be used. It is stated that the requirements of animals in adaptogens change with an increase in the indicators of their productivity
Comparison of the blood parameters with the chemical composition of the muscle tissue of meat-and-egg chicken
Basic blood and muscle tissue parameters have been analyzed in crossbred male Russian White and Cornish hens (β, RW x CORN, n=95, slaughtered at 63 days of age). According to BW at slaughter, males (n=95) were divided into 3 groups (group 1β1,000β1,799 g, n=31; group 2β1,800β2,099 g, n=28; group 3β2,100β2,650 g, n=36). It has been found that with an increase in the live weight at slaughter, the ratio of albumin to globulin (p=0.038), aspartate aminotransferase (p=0.003) increased in the serum of birds; the levels of globulins (p=0.05), glucose (p=0.02), Ca (p=0.006), Mg (p=0.05) decreased. With increasing BW, the crude protein content in thigh muscle decreased (p=0.019) against a trend towards increasing moisture content in thigh meat (p=0.058). Comparative assessment of biochemical blood parameters of nitrogen, carbohydrate-lipid, mineral metabolism, antioxidant protection parameters, some clinical blood parameters (hematocrit, erythrocytes and hemoglobin) and chemical composition of the breast and thigh muscle tissue has been carried out. The analysis (Pearson correlation coefficients) has revealed patterns between the concentration of some blood metabolites and the composition of muscle tissue in males. Thus, the accumulation and analysis of data on resource genetic populations is of interest for science and practice in order to establish relationships between blood parameters and the quality of chicken products, as well as to identify biomarkers for predicting poultry productivity in vivo
Histological characteristics and functional properties of red and white parts of m. semitendinosus of slaughter pigs
A unique muscle of pigs (Sus scrofa domesticus) is m. semitendinosus, which contains the βredβ (dark) part located mainly in the depth of the leg cut and the βwhiteβ (light) part located in the close proximity to the subcutaneous fat layer. Differences in the characteristics of its βredβ and βwhiteβ parts can exert a significant effect on quality and economic indicators of meat products. The aim of this research was to study histological features of the microstructure and technological properties of muscle tissue from different parts of m. semitendinosus, obtained from slaughter pigs of Russian production. M. semitendinosus was excised from chilled porcine carcasses (N=20) 24 hours after slaughter in the process of deboning. Histological examination showed that the dark part of the muscle was characterized by a higher package density of fibers, higher number of capillaries and higher sarcomere length. On the contrary, the light part was characterized by a higher diameter of muscle fibers. Analysis of muscle fiber types showed that the proportion of type I, intermediate and type IIb fibers was higher by 9.3, 5.2 and 4.1%, respectively, in the dark part. Significant differences between the dark and light parts of m. semitendinosus were revealed in terms of the number and size of giant fibers: the light part was characterized by a larger number (by more than 5 times) of giant fibers with the fibers of a larger size (almost by 11%). The samples of minced meat from the dark and light parts showed significant (Ρ<0.05) differences in the mean values of lightness, redness and yellowness (L*, a* and b*) by 6.00, 4.68 and 3.01 units, respectively, in raw samples, and by 6.53, 2.99 and 1.81, respectively, after curing with the nitrite mixture and cooking (Ρ<0.05). The dark part of m. semitendinosus had higher pH values (Ρ<0.05) both for raw and cooked samples. The consistency of the samples from the light part was less elastic, looser and more crumbly than that in the samples produced from the dark part of m. semitendinosus, which was confirmed by the structural-mechanical investigations. Therefore, this study showed significant differences between the dark and light parts of m. semitendinosus by microstructural and functional-technological characteristics. Significant variability by muscle fiber diameter, which was observed in the light part of this muscle, apparently should be taken into account in breeding work and quality assessment of pork from slaughter animals
Postslaughter state of muscle tissue of pigs depending on the duration of pre-slaughter fasting
Changes in the muscle tissue microstructure lead to changes in meat quality. One of the causes of the myopathy development is animal stress. Pigs experience the strongest stress during pre-slaughter holding. The study of the postmortem meat structure depending on fasting time is a topical task. The objects of the research were samples of m. L. dorsi obtained after slaughter from pigs that differed in fasting time: 4 (group 1), 8 (group 2), 10 (group 3), 16 (group 4) and 18 (group 5) hours (N = 20, n = 4). Investigation of the microstructure and morphometric measurements were carried out on preparations stained with hematoxylin and eosin. Myopathic changes in muscle tissue were assessed using a semi-quantitative method developed earlier. All studied samples were characterized by the uniform condition of muscle tissue. Statistically significant differences between individual groups were observed regarding the number and area of giant fibers, sarcomere length, diameter of muscle fibers and proportion of muscle fibers, which diameter was lower or higher by 1/3 than the mean fiber diameter. An increase in the pre-slaughter holding time reduced the number and area of giant fibers (r = β0.8437 and β0.5796, respectively), as well as the diameter of βnormalβ fibers (r = β0.5337), which positively influenced pork quality. Groups 1, 2 and 3 were characterized by the presence of signs of moderate and pronounced myopathy. Only one carcass with pronounced myopathic signs was revealed in each of groups 4 and 5. In group 4, one carcass did not have signs of myopathy. Pre-slaughter holding during 4, 8 and 10 hours led to deterioration of pork quality. The recommended fasting time is 16 hours
EXPRESSION OF TLR2, TLR3, TLR4 AND PROINFLAMMATORY TNF AND IL-6 CYTOKINES IN LIVER BIOPSIES OF NONALCOHOLIC FATTY LIVER DISEASE PATIENTS
Non-alcoholic fatty liver disease (NAFLD) is a group of conditions closely associated with obesity that are among the most common and socially significant liver diseases in the modern Western world. The emergence and progression of NAFLD from simple steatosis to non-alcoholic steatohepatitis with the subsequent development of fibrosis are the leading factors in the pathogenesis of a significant proportion of the most severe liver pathologies, such as cirrhosis and hepatocellular carcinoma, as well as extrahepatic metabolic complications of NAFLD, such as insulin resistance and type 2 diabetes mellitus. The inflammatory component is one of the most important factors in the pathogenesis of NAFLD, particularly in the context of the progression of simple steatosis to non-alcoholic steatohepatitis. At the same time, the role of the most important mediators of the inflammatory response, innate immunity receptors and the Toll-like receptors in particular, in the pathogenesis of NAFLD has been poorly studied. In the present work, we first used the bioinformatics analysis of the publicly available gene expression databases to demonstrate that only TLR1, TLR2, TLR3 and TLR4 were significantly expressed in the healthy human liver. We then used the reverse transcription PCR to measure the mRNA expression levels of TLR2, TLR3, and TLR4, as well as those of the important pro-inflammatory mediators tumor necrosis factor (TNF) and interleukin-6 (IL-6), in the liver biopsy specimens obtained from 20 patients with NAFLD (simple steatosis, n = 10; non-alcoholic steatohepatitis, n = 10), as well as from 4 obese patients with clinical suspicion for NAFLD but no histological signs of NAFLD in their liver biopsies. We found a significant increase in the expression of TLR2, TLR3 and TLR4 mRNA in liver biopsy samples obtained from patients with non-alcoholic steatohepatitis as compared to those obtained from controls without histological signs of NAFLD. We were also able to demonstrate the association between the hepatic levels of TLR2, TLR3 and TLR4 mRNAs with the histological degree of liver damage as evidenced by the degree of steatosis and balloon dystrophy of hepatocytes, as well as with the plasma levels of uric acid, the important endogenous stimulator of innate immunity. Our data indicate the possible involvement of innate immunity, particularly the Toll-like receptors, in the pathogenesis of NAFLD
Π ΠΎΠ»Ρ ΠΊΠΎΡΠΌΠΎΠ²ΡΡ Π°Π΄Π°ΠΏΡΠΎΠ³Π΅Π½ΠΎΠ² ΠΏΡΠΈ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΠΊΠΎΠ½ΡΠ΅ΠΏΡΠΈΠΈ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π° ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠΈ ΡΠ²ΠΈΠ½ΠΎΠ²ΠΎΠ΄ΡΡΠ²Π°
One of the priorities of the Strategy of scientific and technological development of the Russian Federation (approved by Presidential Decree β 642 of December 1, 2016) is the transition to a highly productive and environmentally friendly agriculture. Organic agriculture can help to ensure sufficient food for the population by 2050 and simultaneously reduce the impact of agriculture on the environment only if it is implemented as part of a system of agricultural production, which should provide the same volume and composition of products as in the baseline scenario. An important aspect of organic livestock production is to reduce the impact of stress factors on animals. A promising solution can be the use of natural biologically active substances with pronounced antioxidant properties. The action of natural bioflavonoids (Taxifolin) and also in a complex with vitamins on the organism of fattening pigs during the periods of stress of various etiology (climatic, fodder, social etc.) has been studied. A complex including vitamin C, vitamin E and Taxifolin has been developed. The provisions of the method of feeding pigs as a way to reduce the negative impact of stress factors on meat quality by means of the studied nutritional factor have been studied experimentally.ΠΠ΄Π½ΠΈΠΌ ΠΈΠ· ΠΏΡΠΈΠΎΡΠΈΡΠ΅ΡΠΎΠ² Π‘ΡΡΠ°ΡΠ΅Π³ΠΈΠΈ Π½Π°ΡΡΠ½ΠΎ-ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ°Π·Π²ΠΈΡΠΈΡ Π ΠΎΡΡΠΈΠΉΡΠΊΠΎΠΉ Π€Π΅Π΄Π΅ΡΠ°ΡΠΈΠΈ (ΡΡΠ²Π΅ΡΠΆΠ΄Π΅Π½Π° Π£ΠΊΠ°Π·ΠΎΠΌ ΠΡΠ΅Π·ΠΈΠ΄Π΅Π½ΡΠ° Π ΠΎΡΡΠΈΠΉΡΠΊΠΎΠΉ Π€Π΅Π΄Π΅ΡΠ°ΡΠΈΠΈ ΠΎΡ 1 Π΄Π΅ΠΊΠ°Π±ΡΡ 2016 Π³. β 642) ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΏΠ΅ΡΠ΅Ρ
ΠΎΠ΄ ΠΊ Π²ΡΡΠΎΠΊΠΎΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠ²Π½ΠΎΠΌΡ ΠΈ ΡΠΊΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ ΡΠΈΡΡΠΎΠΌΡ Π°Π³ΡΠΎΡ
ΠΎΠ·ΡΠΉΡΡΠ²Ρ. ΠΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΡΠ΅Π»ΡΡΠΊΠΎΠ΅ Ρ
ΠΎΠ·ΡΠΉΡΡΠ²ΠΎ ΠΌΠΎΠΆΠ΅Ρ ΡΠΏΠΎΡΠΎΠ±ΡΡΠ²ΠΎΠ²Π°ΡΡ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° ΠΏΡΠΎΠ΄ΠΎΠ²ΠΎΠ»ΡΡΡΠ²ΠΈΡ Π΄Π»Ρ Π½Π°ΡΠ΅Π»Π΅Π½ΠΈΡ ΠΊ 2050 Π³ΠΎΠ΄Ρ ΠΈ ΠΎΠ΄Π½ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΌΡ ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΡ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΠ΅Π»ΡΡΠΊΠΎΠ³ΠΎ Ρ
ΠΎΠ·ΡΠΉΡΡΠ²Π° Π½Π° ΠΎΠΊΡΡΠΆΠ°ΡΡΡΡ ΡΡΠ΅Π΄Ρ ΡΠΎΠ»ΡΠΊΠΎ Π² ΡΠΎΠΌ ΡΠ»ΡΡΠ°Π΅, Π΅ΡΠ»ΠΈ ΠΎΠ½ΠΎ Π±ΡΠ΄Π΅Ρ ΡΠ΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½ΠΎ Π² ΡΠ°ΠΌΠΊΠ°Ρ
ΡΠΈΡΡΠ΅ΠΌΡ ΡΠ΅Π»ΡΡΠΊΠΎΡ
ΠΎΠ·ΡΠΉΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π°, ΠΊΠΎΡΠΎΡΠ°Ρ Π΄ΠΎΠ»ΠΆΠ½Π° ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡ ΡΠ΅ ΠΆΠ΅ ΠΎΠ±ΡΠ΅ΠΌΡ ΠΈ ΡΠΎΡΡΠ°Π² ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠΈ, ΡΡΠΎ ΠΈ ΠΏΡΠΈ Π±Π°Π·ΠΎΠ²ΠΎΠΌ ΡΡΠ΅Π½Π°ΡΠΈΠΈ. ΠΠ°ΠΆΠ½ΡΠΌ Π°ΡΠΏΠ΅ΠΊΡΠΎΠΌ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΆΠΈΠ²ΠΎΡΠ½ΠΎΠ²ΠΎΠ΄ΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠΈ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΠ΅ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΠ°ΠΊΡΠΎΡΠΎΠ² ΡΡΡΠ΅ΡΡΠ° Π½Π° ΠΆΠΈΠ²ΠΎΡΠ½ΡΡ
. ΠΠΎΡΡΠΎΠΌΡ ΡΡΡΠ΅ΡΡΠ²ΡΠ΅Ρ ΠΎΡΡΡΠ°Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ Π² ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ΅ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΡΡ
ΠΈ ΡΡΡΠΎΠΉΡΠΈΠ²ΡΡ
ΠΏΠΎΠ΄Ρ
ΠΎΠ΄ΠΎΠ² ΠΊ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ Π΄Π»Ρ ΡΠΌΡΠ³ΡΠ΅Π½ΠΈΡ Π½Π΅Π³Π°ΡΠΈΠ²Π½ΡΡ
ΠΏΠΎΡΠ»Π΅Π΄ΡΡΠ²ΠΈΠΉ ΡΡΡΠ΅ΡΡΠΎΠ² ΠΈ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΊΠΎΠ½Π²Π΅ΡΡΠΈΠΈ ΠΊΠΎΡΠΌΠ° ΠΏΡΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΠΈ ΡΠ²ΠΈΠ½ΠΈΠ½Ρ Π±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΎΠ³ΠΎ ΠΊΠ°ΡΠ΅ΡΡΠ²Π°. ΠΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌ ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ΠΌ ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΠΏΡΠΈΡΠΎΠ΄Π½ΡΡ
Π±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΡ
Π²Π΅ΡΠ΅ΡΡΠ² Ρ Π²ΡΡΠ°ΠΆΠ΅Π½Π½ΡΠΌΠΈ Π°Π½ΡΠΈΠΎΠΊΡΠΈΠ΄Π°Π½ΡΠ½ΡΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ, ΠΊΠΎΡΠΎΡΡΠ΅ ΠΌΠΎΠ³ΡΡ ΠΏΠΎΡΡΠ΅Π΄ΡΡΠ²ΠΎΠΌ ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·Π°ΡΠΈΠΈ ΡΠ²ΠΎΠ±ΠΎΠ΄Π½ΠΎΡΠ°Π΄ΠΈΠΊΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΎΠΊΠΈΡΠ»Π΅Π½ΠΈΡ ΠΏΠΎΠ²ΡΡΠ°ΡΡ Π°Π΄Π°ΠΏΡΠ°ΡΠΈΠΎΠ½Π½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠ° ΠΊ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΡΡΠ΅ΡΡ-ΡΠ°ΠΊΡΠΎΡΠΎΠ² ΡΡΠ΅Π΄Ρ. ΠΠ·ΡΡΠ΅Π½ΠΎ Π΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ ΠΏΡΠΈΡΠΎΠ΄Π½ΡΡ
Π±ΠΈΠΎΡΠ»Π°Π²ΠΎΠ½ΠΎΠΈΠ΄ΠΎΠ² (ΡΠ°ΠΊΡΠΈΡΠΎΠ»ΠΈΠ½), Π° ΡΠ°ΠΊΠΆΠ΅ Π² ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ΅ Ρ Π²ΠΈΡΠ°ΠΌΠΈΠ½Π°ΠΌΠΈ Π½Π° ΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌ ΠΎΡΠΊΠ°ΡΠΌΠ»ΠΈΠ²Π°Π΅ΠΌΡΡ
ΡΠ²ΠΈΠ½Π΅ΠΉ Π² ΠΏΠ΅ΡΠΈΠΎΠ΄Ρ ΡΡΡΠ΅ΡΡΠΎΠ² ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ ΡΡΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ (ΠΊΠ»ΠΈΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ, ΠΊΠΎΡΠΌΠΎΠ²ΠΎΠ³ΠΎ, ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ½ΠΎΠ³ΠΎ, ΡΠΎΡΠΈΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΈ Ρ. Π΄.). Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡ, Π²ΠΊΠ»ΡΡΠ°ΡΡΠΈΠΉ Π²ΠΈΡΠ°ΠΌΠΈΠ½ Π‘, Π²ΠΈΡΠ°ΠΌΠΈΠ½ Π, ΡΠ°ΠΊΡΠΈΡΠΎΠ»ΠΈΠ½. ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΠΌ ΠΏΡΡΠ΅ΠΌ ΠΈΠ·ΡΡΠ΅Π½Ρ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΡ ΡΠΏΠΎΡΠΎΠ±Π° ΠΊΠΎΡΠΌΠ»Π΅Π½ΠΈΡ ΡΠ²ΠΈΠ½Π΅ΠΉ, ΠΊΠ°ΠΊ ΡΠΏΠΎΡΠΎΠ±Π° ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΡ Π½Π΅Π³Π°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π²Π»ΠΈΡΠ½ΠΈΡ ΡΡΡΠ΅ΡΡ-ΡΠ°ΠΊΡΠΎΡΠΎΠ² Π½Π° ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎ ΠΌΡΡΠ° ΠΏΠΎΡΡΠ΅Π΄ΡΡΠ²ΠΎΠΌ ΠΈΠ·ΡΡΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΠ°ΠΊΡΠΎΡΠ° ΠΏΠΈΡΠ°Π½ΠΈΡ
DETECTION OF AUTOANTIBODIES RECOGNIZING CANCERRETINA ANTIGEN RECOVERIN IN BLOOD OF PATIENTS WITH NON-INVASIVE FOLLICULAR THYROID NEOPLASMS WITH PAPILLARY-LIKE NUCLEAR FEATURES (NIFTP)
Autoantibodies recognizing the cancer-retina autoantigen called recoverin (RCVRN-AutoAb)Β may serve as a highly specific biomarker of cancer-associated retinopathy. However, they may also be found inΒ some cancer patients without clinical evidence of retinopathy. In the present study, dot-ELISA and WesternΒ blot assays were used to demonstrate the presence of circulating RCVRN-AutoAb in 4/7 (57%) of patients withΒ recently recognized pathological entity, non-invasive follicular thyroid neoplasm with papillary-like nuclearΒ features (NIFTP); other thyroid tumors represented by follicular adenomas, and classical and follicular variantsΒ of papillary thyroid carcinomas, demonstrated low frequencies of RCVRN-AutoAb (0/15, 1/20 (5%) andΒ 1/15 (7%), respectively), with no significant differences from healthy individuals (0/15). Our data implicateΒ the circulating RCVRN-AutoAb as a potential biomarker of NIFTP capable of discrimination of this novelΒ pathological entity from other thyroid tumors