Level of neurotransmitters in neuroamine-containing lung structures in different forms of tuberculosis

The aim of the study was to identify the features of variations in the localization of monoamines (catecholamines, serotonin)in the cell structures of autopsy material of lungs affected by tuberculosis. Material and methods. 165 cases of secondary pulmonary tuberculosis were studied. We studied 2500 histological preparations of patients aged 30 to 55 years, divided into 5 groups, corresponding to the forms of secondary tuberculosis (group 1-acute focal tuberculosis, group 2-fibro-focal tuberculosis, group 3-infiltrative tuberculosis, group 4-acute cavernous tuberculosis, group 5 - fibro-cavernous tuberculosis. To selectively detect neuroamine-containing structures of the lungs and adrenergic nerve fibers, the Falk-Hillarp luminescence-histochemical method was used in the modification of E. M. Krokhina, based on the reaction of neuroamine condensation with formaldehyde. Results. When using the Falk-Hillarp luminescence-histochemical method, mycobacteria of tuberculosis containing catecholamines and serotonin were detected in autopsy material of lungs affected by a specific inflammatory process, as well as neuroamine-containing granular luminescent cells and mast cells. Affected and unaffected areas of the lungs contain different amounts of the studied monoamines. The results of the study revealed the dependence of the number of cells and the content of the studied bioamines in them on the form of secondary tuberculosis. It was found that in small forms of secondary tuberculosis (acute focal, fibrotic-focal), the number of cells and quantitative parameters of the studied neurotransmitters (catecholamines, serotonin) in granular luminescent cells and mast cells change in the direction of increase. In destructive processes in the lungs (acute cavernous and fibrous-cavernous tuberculosis), the content of catecholamines in the studied structures in the affected area prevails over the control. The concentration of serotonin in the studied cells of the area of lung tissue affected by the tuberculosis process is reduced. The number of neuroamine-containing cells is significantly reduced. The maximum luminescence of catecholamines and serotonin in granular luminescent cells was determined in the infiltrative form of tuberculosis. In mast cells, the highest content of catecholamines was found in the group of acute cavernous tuberculosis, and serotonin in the group of the infiltrative form of the disease. In stained sections of the lungs in this form of tuberculosis, a luminescent pathway of lymphocytes was found. The nerve fibers detected at the sites of mycobacteria were also changed. They did not have a clear luminescence, looked "swollen", in places they did not have varicose veins. Conclusion. Comparing the results of the study with the literature data, it was found that pulmonary tuberculosis occurs as a delayed reaction, and Mycobacterium tuberculosis manifests itself as a corpuscular antigen.

Quantification of the collagen fibers of healthy and neoplastic mammary tissue in cats by the Picrossirius Red histochemical method

Although feline mammary carcinoma is not the most prevalent among the species, its aggressive behavior represents a low life expectancy, compared with most undifferentiated types of breast cancer. Tissue stiffness induced by the accumulation of collagen fibers is related to a risk factor for carcinogenesis in healthy women and aggressiveness in those with breast cancer, which can also occur in cats. The objective of this work is to identify the relationship between stromal collagen density and aggressiveness of mammary carcinoma in cats, according to the peripheral and central tissue distribution by the Picrossirius Red histochemical method. Image.J® and MatLab® software were used for digital image processing. The mean values of kurtosis and entropy attributes were ​​grouped into a control group, and low and high-grade carcinoma groups, analyzed with one-way ANOVA and Bonferroni’s multiple comparison test (p <0.01). Interpretation of stromal dynamics is important to evaluate both central and peripheral locations. According to entropy, there was a significant increase in the peripheral density in the carcinoma groups in relation to the control group, which can be justified by blood support. The same can be said of the central region, with a significant gain in collagen fibers from the tumors, indicated by kurtosis. The results suggest the presence of increases in stromal density in mammary carcinomas of cats, regardless of their graduation, and occurring in both regions.

Гистохимический анализ 3β-гидроксистероиддегидрогеназы в гипоталамусе крысы

3β-hydroxysteroid dehydrogenase (GSDG) in different parts of the hypothalamus was studied by histochemical method. It was shown that GSDG-positive reaction was present in neurons of the periventricular gray matter, ventromedial, ventrolateral, and arcuate nuclei of the hypothalamus. In the paraventricular nucleus, GSDG-positive neurons were «small-cell» neurons located primarily in the peripheral part of this nucleus.

Increasing of IFNγ Expression in Transformed Cells of Balb/c Mice Due to Ethanol Extract Cocoa Beans (Theobroma cacao)

As current technology cannot cure cancer completely, prevention becomes the main choice. To prevent the development of cell transformation into cancer cells, polyphenols that are widely found in cocoa beans (Theobroma cacao) can be used. IFNγ plays an important role in immunity against cancer. This study aims to see the ability of cocoa beans ethanol extract to increase the number of IFNγ expression in Balb/c mice undergoing cell transformation. This study used three groups Balb/c (n=4), namely K1 (normal control), K2 (negative control: injected with benzopyrene without ethanol extract of cocoa beans), and K3 (treatment: injected with benzopyrene, given 4mg/30gBW/po/day ethanol extract of cocoa beans). The mice were biopsied, and IFNγ expression was examined by immune histochemical method. The results showed that IFNγ expression increased significantly in K3. It can be concluded that ethanol extract of cocoa beans could increase IFNγ expression in Balb/c mice undergoing cell transformation.

A METABOLITE OF PROGESTERONE 11-DEOXYCORTICOSTERONE IN PLACENTA DURING EXACERBATION OF CYTOMEGALOVIRUS INFECTION

The aim of the work is to study the content of 11-deoxycorticosterone in the placenta during pregnancy complicated by exacerbation of cytomegalovirus infection. Histochemical method was used to determine the content of 11-deoxycorticosterone in 72 placentas, including 37 cases from women with acute cytomegalovirus infection and simultaneously diagnosed moderate preeclampsia, and 35 placentas from women with exacerbation of chronic cytomegalovirus infection without concomitant diseases. The control group consisted of 30 placentas from mothers with chronic cytomegalovirus infection in the latent stage. It was found out that an increase in the content of 11-deoxycorticosterone in placenta by 25% in comparison with the control group occurred during gestation with an exacerbation of cytomegalovirus infection. A significant increase (by 40%) in the content of this hormone in the placenta was noted during the reactivation of the viral process accompanied by preeclampsia. We believe that an increase in the production of 11-deoxycorticosterone with mineralocorticotropic effect in the placenta could contribute to the development of hypertensive disorders in pregnancy complicated by cytomegalovirus infection.

Histochemical method of diagnosis of mixed pasteurellosis and ascaridosis bird disease

For the first time was developed an effective and specific histochemical method for the diagnosis of mixed pasteurellosis and ascaridosis diseases of birds, which can be used in conjunction with bacteriological, serological and helminthocoproscopic studies, and in cases where it is impossible to diagnose serologic methods. The proposed method of histochemical diagnostics can be used for the detection of pasterelo-ascaridium carriers during mixed pasteurellosis and ascaridosis disease of birds. In the birds of the experimental group (clinically diseased bird), the pasteurial antigen in the histological preparations of the organs tissues after the histochemical study looked like local and diffuse clusters of oval and deep form of intense purple color and local clusters of oblong-shaped larvae with the presence of a head and a tail of blue and eggs of light purple color On histological sections of tissues and organs of the control group (clinically healthy bird), such changes were absent. For investigation of the organs of the experimental group (clinically diseased poultry), we have established the following areas of accumulation of pasteurial antigen and larvae and eggs of ascarids: in the heart – observed postponement of the antigen Pasteurella multocida in the form of strips throughout the area of the histological cut along the length of the muscle fibers and the loss of their delineation and fragmentation; in the liver – observed the diffuse location of the Pasteurella multocida antigen throughout the histological section in the lumen of the blood vessels and around them, the Disse spaces, between the hepatocytes; histochemically detected reduction of AsAT – by 84.3% and bilirubin – by 74.5%; in the muscular stomach – there was a diffuse postponement of the pasteurial antigen throughout the histologic section, but the largest accumulation was observed around the fibers of smooth muscle tissue of dark purple; in the spleen – the presence of Pasteurella multocida antigen throughout the histological section around lymphoid clusters, blood vessel walls, and intensive deposition of the antigen were observed around the splenic artery in the form of a deep, intense violet color; in the duodenum – observed diffuse deposition of the Pasteurella multocida antigen across the entire histologic area around the blood vessels, lymphatic follicles, villi of the mucous membrane, between the enterocytes, the mucosal muscle folds, the intramural ganglion nodules in the form of the deep form; Intestinal wall, blood vessels, licorice glands, larvae of ascarid species of Ascaridia galli species were observed blue, around granular grains around the dead larvae; Histochemically, decreased activity of alkaline phosphatase – by 70% and mucin – by 82.4%; in the kidneys – locally observed the presence of a Pasteurella multocida pasteur antigen around the intercellular veins, a capsule of the nephron, a circular oval-shaped distal tubule, a dark violet color; Histochemically, creatinine decreased by 45.4%.