Evaluation of secretory activity in carp pancreatocytes (Cyprinus carpio L.) when using lactobacillus-based chelate and probiotic supplemental feed complexes

The experimental research was carried out on the juvenile carp (Cyprinus carpio L.). The impact from supplemental feeds consisting of variable concentrations of chelate compounds, biogenic trace elements and probiotic lactobacillus-based product Bacillus subtilis VKPM B-2335 was evaluated. Optical and qualitative parameters of the lactobacillus base were studied in order to identify the major group of substances potentially able to influence the end result. The purpose of this research was to identify changes in the structure of the zymogen granules and their dimensions at which supplemental feeds produce a stimulating effect on the synthesis of zymogens in exogenous cells of the secretory part of pancreas. At the outcome of the study, for the first time, it was possible to prove that the integrated action of chelates and lactobacillus-based probiotics complemented each other. Metal chelate compounds contributed to enlargement of the zymogen granules, if compared to the control values. The bacterial products accelerated production of the zymogen granules in acinar cells diffusely located in carp hepatopancreas.

Endothelial function status in hypogonadal men

Background: Type 2 diabetes mellitus (T2DM) and hypogonadism are mutually aggravating diseases associated with the development and progression of cardiovascular pathology. The status of endothelial function in men with T2DM and hypogonadism hasn’t been studied.Aims: To assess the effect of hypogonadism on endothelial function in men with T2DM.Materials and methods: Patients underwent clinical studies, assessment of carbohydrate and lipid metabolism, the content of sex hormones (total testosterone (T), sex hormones binding globulin, free T, luteinizing hormone) and markers of endothelial function (nitric oxide (NO), endothelial nitric oxide synthase type 3 (eNOS3), endothelin, adhesion molecules ICAM-1, VCAM-1, p- and e-selectins, cadherin), ultrasound examinations of endothelium-dependent vasodilation (EDVD) of the brachial artery (BA) and carotid arteries with an assessment of the thickness of intima-media complex (TIM) were performed.Results: The study included 276 men with T2DM (age 54.0[49;60] years), who were divided into 2 groups: 1–124 patients with hypogonadism; 2–152 eugonadal patients. Reduction of the endothelial vasomotor function was detected in 32.4% of patients in the 2st group and in 55.3% of the 1nd group (χ2=6.1; p=0.01), which was associated with a decrease in EDVD by 29.8 % (p<0.001) and an increase in the time of development of maximal BA vasodilation by 30 seconds in patients with hypogonadism (p<0.001). The TIM of the carotid arteries was 10% more in group 1 compared with group 2 (p=0.03). The ­level of NO in the 1st group was reduced by 1.6 times (p=0.001), eNOS3–by 1.5 times (p=0.038) compared with the 2nd group. The concentrations of adhesion molecules were higher in group 1 compared to group 2: VCAM-1 by 32.5% (p<0.001), ICAM-1 by 43.5% (p<0.001), p-selectin–by 19.3% (p=0.004), cadherin–6 times (p<0.001).Conclusion: Hypogonadism in men with T2DM is associated with the development of endothelial dysfunction, which manifests in a weakening of the EDVD and a slowdown in its development, as well as disturbances of the secretory activity of endothelium–a decrease in NO synthesis and activation of the adhesion molecules expression, which can be regarded as an universal pathogenetic mechanism of the development of cardiovascular diseases in combination of T deficiency and T2DM.

Local cytokine production in patients with external genital endometriosis

The article presents the results of the investigation of cytokine production by endometrioid heterotopias in organotypic cultivation in comparison with the cell secretory activity of peritoneal fluid and endometrial tissue in women with external genital endometriosis. The obtained results show systemic changes of regulation of cytokine production in the process of external genital endometriosis development.

Treatment in AL Amyloidosis: Moving towards Individualized and Clone-Directed Therapy

Systemic amyloid light chain (AL) amyloidosis is a rare protein deposition disease caused by a clonal B cell disorder of the bone marrow. The underlying diseases can be plasma cell disorders (monoclonal gammopathy of clinical significance, smoldering or symptomatic myeloma) or B cell non-Hodgkin’s lymphoma (e.g., Waldenstrom’s disease or marginal zone lymphoma) with secretory activity. It is crucial to characterize the underlying disease very precisely as the treatment of AL amyloidosis is directed against the (often small) B cell clone. Finally, the detection of cytogenetic aberrations of the plasma cell clone will likely play an important role for choosing an effective drug in the near future.

Adaptive morphogenesis of the adrenal glands of ducks in conditions of hyperthermia

It was found that under conditions of hyperthermia, morphofunctional changes develop in the interrenal part of the adrenal glands, indicating an increase in the functional activity of the gland. The study of ducks on the 5th day of hyperthermia revealed loosening and thickening of the adrenal gland capsule compared to the control. Significant hemodynamic disorders were noted: the phenomena of stasis and erythrocyte sludge in sharply expanded blood capillaries of the adrenal glands. It was found that on the 10th day of hyperthermia, hemodynamic disorders are progressive: the phenomena of sludge and red blood cell stasis are less pronounced, but parenchymal edema and a sharp expansion of sinusoid capillaries persist. Changes in interrenal cells (their high prismatic shape, cytoplasmic vacuolization, apical granularity) are also determined to characterize the high secretory activity of endocrinocytes. The found changes indicate the development of a stress reaction.

HISTOPATHOLOGICAL DIAGNOSTICS OF TESTICULAR SERTOLI CELL TUMOR IN INGUINAL CRYPTORCHIDISM

The research was carried out in the Interdepartmental Scientific Veterinary Center of Veterinary Medicine based in the Ulyanovsk State Agricultural University. We studied the testis tumor - sertoli cell tumor, according to histological classification, in a male dog with inguinal cryptorchidism. The research goal was to study possible changes in the differentiation, hormonal and metastatic activity of sertoli cell tumor in case of inguinal cryptorchidism in comparison with this type of tumor in physiologically located testes, described in literature. The clinical examination revealed the presence of left-sided inguinal cryptorchidism as well as signs of hyperestrogenism: hyperpigmentation and non-inflammatory alopecia of scrotum, prepuce, located sym-metrically in the right and left iliac regions of the abdomen. The studied neoplasm showed the presence of a dense capsule, the absence of infiltrative growth and metastases in the regional lymph nodes, distinct secretory activity. Fragments of tumor tissue from the testis, epididymis and spermatic cord were obtained for histological examination by the means of excisional biopsy. As a result, the neo-plasm was found to be a sertoli cell tumor of a high degree of differentiation. The tissues of the epididymis showed a significant thickening of the stroma due to the proliferation of connective tissue - a sign of severe sclerosis. The mi-croslides of the spermatic cord and epididymis did not show any signs of infiltrative growth or metastatic spread of tumor cells which meant that the relative benign quality of sertoli cell tumor was found in this clinical study of inguinal cryptorchidism.

Obesity, Sodium Homeostasis, and Arterial Hypertension in Children and Adolescents

Background: The relationship between obesity, arterial hypertension, and excessive salt intake has been known for a long time; however, the mechanism of this relationship remains not clear. Methods: The paper presents a current literature review on the relationship between salt consumption and the development of arterial hypertension in children and adolescents with obesity. Results: In addition to the traditional theory of hypertension development due to the increase in intravascular volume and disturbances of sodium excretion, recent studies indicate the existence of a complex mechanism related to excessive, pathological secretory activity of adipocytes, insulin resistance, and impaired function of the renin–angiotensin–aldosterone axis. That makes obese children and adolescents particularly vulnerable to the development of salt-sensitive arterial hypertension. Studies performed in many countries have shown that children and adolescents consume more sodium than recommended. It is worth noting, however, that the basis for these recommendations was the extrapolation of data from studies conducted on adults. Moreover, more important than sodium intake is the Na/K ratio and water consumption. Conclusion: Regardless of the population-wide recommendations on reducing salt intake in children, specific recommendations for overweight and obese patients should be developed.

On the history and some characteristics of neuroendocrine tumors of the gastrointestinal tract. Neuroendocrine tumors of the pancreas. Part 2

The literature review presents the analysis of numerous studies that have formed the basis for creating ideas about the diffuse endocrine system,namely existence of the cellular accumulations and individual cells that produce various hormones and biologically active substances in addition to the main endocrine glands. Several types of endocrine cells with these functionshave been established, in particular, in the organs of the gastrointestinal tract, starting from the esophagus and up to the terminal parts of the large intestine. Most of them are contained in the pancreas, antrum of the stomach, duodenum, the initial part of the intestine, in the liver. Excessive secretory activity of these cells can cause the development of pathological clinical syndromes, characterized by the effects of the corresponding hormones. The tumors or diffuse hyperplasia of the corresponding cellsmay present morphological substrate of such syndromes. The author considers the pancreas as an integral part of the diffuse endocrine system, as specific endocrine functions in it perform numerous accumulations (islets of Langerhans) or individual cells. The review of the numerous neuroendocrine tumors of the gastrointestinal tract examines in detail the characteristics of some of them in historical and clinical aspects, in particular Zollinger—Ellison syndrome as the most common and well-studied tumor. Glucagonoma is also considered as a neuroendocrine tumorderived from α-cells of the pancreas, is a kind of insulinoma antagonist, as it secretes an excess of the hormone glucagon, causing the development of hyperglycemic clinical syndrome in contrast to hypoglycemic, caused by insulin. It is a rare tumor and its consideration after insulinoma can be explained by the antagonistic nature of the action of hormones produced by these tumors. In the group of neuroendocrine tumors of the pancreas, glucagonoma follows the frequency of insulinoma and gastrinoma.

On the history and some characteristics of neuroendocrine tumors of the gastrointestinal tract. Review. Part 1

The literature review is devoted to the analysis of numerous studies that have formed the basis for creating ideas about the diffuse endocrine system. In addition to the main endocrine glands, also there are cellular accumulations and individual cells that produce various hormones and biologically active substances. It is established that, in particular, in the organs of the gastrointestinal tract, starting from the esophagus and to the terminal parts of the large intestine, there are several types of endocrine cells with these functions. Most of them are in the pancreas, antrum of the stomach, duodenum, the initial part of the intestine, in the liver. Excessive secretory activity of these cells can cause the development of pathological clinical syndromes, characterized by the effect of the corresponding hormones. The morphological substrate of such syndromes may be tumors or diffuse hyperplasia of the corresponding cells. The author considers the pancreas as an integral part of the diffuse endocrine system, as specific endocrine functions in it perform numerous accumulations (islets of Langerhans) or individual cells. The review of the numerous neuroendocrine tumors of the gastrointestinal tract examines in detail the characteristics of some of them in historical and clinical aspects, in particular insulinoma as the most common and well-studied tumor. Glucagonoma is also considered as a neuroendocrine tumor derived from α-cells of the pancreas, is a kind of insulinoma antagonist, as it secretes an excess of the hormone glucagon, causing the development of hyperglycemic clinical syndrome in contrast to hypoglycemic, caused by insulin. It is a rare tumor and its consideration after insulinoma can be explained by the antagonistic nature of the action of hormones produced by these tumors. In the group of neuroendocrine tumors of the pancreas, glucagonoma follows the frequency of insulinoma and gastrinoma.