Search

Background: Neovascularization/angiogenesis is crucial for the growth and metastatic spread of neoplasms. It is a key reaction to evaluate the growth potential of neoplasms, a multi-step process related to the modeling of the intercellular matrix, proliferation and migration of endothelial cells. Aim: Study of the vascular density during Hashimoto's Thyroiditis (HT) and Papillary Thyroid Carcinoma (PTC) by immuno-histochemical examination of angiogenesis activity: VEGF, CD34 markers. Methods: The research database is retrospective and prospective tissue samples obtained from patients after total thyroidectomy, lobectomy or partial resection: HT (n=25), PTC (n =10) which studied histologically and immunohistochemically investigated. Results: VEGF expression reduced as compare cases of HT than in PTC. There was no clear association between CD34 and thyroid pathology. Conclusion: VEGF is the most potent inducer of neovascularization, and its increased expression is associated with a poor prognostic outcome in many diseases. It is known that TTF-1 positively regulates VEGF. But it should be noted that, in terms of manifestation time, the action of VEGF is primarily than TTF1, and may be discussed as a predictor of dysplasia and malignant transformation. [ABSTRACT FROM AUTHOR]

Sarcoidosis is a complex multisystem inflammatory granulomatous disease that can affect any organ, with a wide range of clinical presentations. A significant number of patients with systemic sarcoidosis may also have cardiac involvement. Clinical manifestations of cardiac sarcoidosis can include various rhythm and conduction disturbances, as well as heart failure. The structure of sarcoid granulomas is similar to that of tuberculous granulomas, but in contrast, they lack caseous necrosis. Tissue changes in sarcoidosis tissues depend on the stage of development of the disease, progressing from pathological process: macrophage-lymphocytic infiltration to epithelioid cell granuloma formation, and fibrosis. Granulomas can be found in any part of the myocardium, with the most common locations being the free wall of the left ventricle, the basal part of the interventricular septum, and the interatrial septum. Vasculopathy of the pulmonary circulation and coronary arteries is often observed. Advancements in diagnostic imaging techniques, such as computer tomography and magnetic resonance imaging, have facilitated the verification of cardiac sarcoidosis. This article presents an analysis of updated information on cardiac sarcoidosis by a multidisciplinary working group., (© 2023 Isfahan Cardiovascular Research Center & Isfahan University of Medical Sciences.)

The infection caused by the Human Immunodeficiency Virus (HIV) has spread rapidly across the globe, assuming the characteristics of an epidemic in some regions. Thanks to the introduction of antiretroviral therapy into routine clinical practice, there was a considerable breakthrough in the treatment of HIV, that is now HIV is potentially well-controlled even in low-income countries. To date, HIV infection has moved from the group of life-threatening conditions to the group of chronic and well controlled ones and the quality of life and life expectancy of HIV + people, with an undetectable viral load is closer to that of an HIV - people. However, unsolved issues still persist. For example: people living with HIV are more prone to the age-related diseases, especially atherosclerosis. For this reason, a better understanding of the mechanisms of HIV-associated destabilization of vascular homeostasis seems to be an urgent duty, that may lead to the development of new protocols, bringing the possibilities of pathogenetic therapies to a new level. The purpose of the article was to evaluate the pathological aspects of HIV-induced atherosclerosis., Competing Interests: Declaration of Competing Interest The authors declare that they have no known any competing financial interests or personal relationships that could have appeared to influence the work reported in this statement., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Cardiovascular disease (CVD) remains the leading cause of morbidity and mortality in the population, as well as the economic burden of the health care system. Currently, CVDs account for more than 17.6 million deaths a year and are projected to exceed 23.6 million by 2030. Unstable atheroma, and its rupture, underlies the pathology of most cardiovascular complications, particularly acute coronary syndrome, mortality from which, compared with other CV events, remains the leading one. Despite numerous efforts by WHO, national health systems, and medical authorities, the incidence and mortality from cardiovascular events remain critically high. Thus, the search for new risk factors for the development of CV pathology looks very relevant. Our working group decided to amalgamate our research data, which reflects the study of modern risk factors from the Armenian, Russian, Georgian, and Iranian medical schools. In particular, the aspects of cardiotoxic effects of chemotherapy, hypothyroidism, and oral dysbiosis are discussed., (Copyright © 2021 Elsevier Inc. All rights reserved.)

Arrhythmogenic right ventricular cardiomyopathy is an urgent problem of modern cardiology. This myocardial remodeling manifests various desmosomopathies, channelopathies, and other mutations resulting in a violation of the coordinated heart work, particularly the myocardium. The incidence of this cardiomyopathy is not significant. Still, it is worth noting that athletes are at an increased risk of developing this disease, emphasizing the importance of studying this topic and its relevance from cardiologists and sports physicians. Moreover, the clinical pattern of this disease is heterogeneous. This pathology requires strengthening control and attention of medical personnel and constant improvement and optimization of diagnostic methods and treatment protocols. In this article, the pathophysiological mechanisms, molecular genetic aspects, and the dynamics of morphofunctional changes are represented in detail. Understanding the mechanisms of etiopathogenesis and the features of morphological changes observed in this cardiomyopathy and its more detailed study is fundamental in developing modern treatment methods to improve patients' quality and life expectancy., (Copyright © 2022 Elsevier Inc. All rights reserved.)

The relationship between subclinical hypothyroidism (SH) and Atherosclerotic (At) cardiovascular diseases (CVD) has been one of the most popular topics but causal connection between Hashimoto thyroiditis (HT), lipid profile and follicular epithelial molecular biology is controversial. We investigated 3 groups of patients (group I - HT, group II - HT+At, group III - At). All laboratory tests for thyroid function and lipid profile detection were used according to international guideline recommendations, coronary and femoral arteries intima-media thickness (IMT) were tested by high-resolution ultrasonography, thyroid gland histology and immunohistochemistry carried out by p63 and S100 protein expression control. The statistical analysis was performed using Microsoft Excel 7.0, SPSS-20 version, Mann-Whitney U-test and Pearson's correlation. Comparisons between groups and factors were made using Multiple Linear Regression model. With the results obtained, dyslipidemia and the diastolic hypertension accelerate the hypothyroidism in HT+At group to predispose carotid and femoral arteries IMT. TSH and anti-TPO antibody levels are directly linked to the cardiovascular complications. Biomarkers S100 and p63 data show negative feedback effects of hypercholesterolemia on the high morphological risk features in Hashimoto parenchyma, which may partially explain the significant trend and pathobiological link of HT with Papillary thyroid carcinoma.

Structures, responsible for acceptive (comensaling relation) and protective (pathogenic defense) immunity, were studied and compared in small intestine - to ileum mucosa. Data shown, that main application of the both domains of immune system is to support the correlation between body and foreign microbes, but they response is different. Most significant differences are as follows: in acceptive reactions presented only in aseptic animals - gnotobionts, inflammatory changes absent, so immune reaction complex develops into physiological condition. Symbiotic reactions release in mucosa epithelial cells, also in cells, responsible for adaptive and congenital immune reactivity. Thus, acceptive immune reactions contribute symbiotic biocenosis versus elimination; which is function of protective immunity.

Peripheral lymphoid organs from 2 different groups of laboratory rat's was studied (30 animals in each group). 1) Gnotobionts received from experimental - biological models Iffa-Credo laboratory (Lyon, France), 2) Ordinary conventional animals from the same laboratory, contained in standard conditions of vivarium microbial environment (control group). Animals from each group were subdivided into 2 aged categories (15 in each group): mature (8-12 month, 200,0 - 250,0 g) and aged (I period of old age 24-32 month; 300,0-450 g.) animals. Histological, electron-microscopic and morphmetric methods of studies were used. Correlations between morphological peculiarities and cellular composition of the rat's lymphoid tissue with antigenic load and age were determined. Namely, gnotobiont rat's lymphoid tissue contains less mature population, hence inactive lymphoid cells compared with conventional animals. However, with age this processes in both animal groups acquire a similar orientation.

The purpose of the study - to determine the feature of the vascular endothelial growth factor (VEGF) and thyroid-stimulating hormone (TSH) expression in the thyroid gland (TG) in various thyroid diseases. Material - thyroid tissue (operative material) with histologically confirmed diagnosis: 10 - follicular adenoma, 17 - multinodular goiter, 8 - thyroiditis Hashimoto, 8 - papillary carcinoma, 10 - intact (normal) thyroid samples (forensic autopsy). The immunohistochemical study of the material showed the following results: the increase of the Hürtle cells population 40 % or more indicates a hyperthyroidism tendency despite TSH+ receptor status. Under the thyroid pathology TSH and VEGF expression appears in thyrocytes and also in microvascular endothelial cells. VEGF expression is below the norm in the Hashimoto thyroiditis. VEGF is involved not only in angiogenesis, but in pathophysiological shifts in thyroid tissue. Microvessel density (MVD) and TSH positive receptor status under the thyroid pathology testify the absence of the endothelial cells transformation, however, this index can not serve as a biopothential prognostic marker of thyroid disease.

The aim of study is the analysis of pulp nerve fibers demyelination degree and its relationship with Visual Analogue Scale (VAS) score that may be measured as objective criteria. Material and methods of study. Step I: electron micrografs of dental pulp simples with special interest of myelin structural changes detected in 3 scores system, obtained from 80 patients, displays in 4 groups: 1) acute and 2) chronic pulpitis without and with accompined systemic deseases, 20 patients in each group. Dental care was realized in Kutaisi N1 Dental clinic. Step II - self-reported VAS used for describing dental pain. All data were performed by SPSS 10,0 version statistics including Spearmen-rank and Mann-Whitny coefficients for examine the validity between pulp demyelination degree and pain intensity in verbal, numbered and box scales. Researched Data were shown that damaged myelin as focal decomposition of membranes and Schwann cells hyperthrophia correspond with acute dental pain intensity as Spearman index reported in VAS numbered Scales, myelin and axoplasm degeneration as part of chronic gangrenous pulpitis disorders are in direct correlation with VAS in verbal, numbered and behavioral Rating Scales. In fact, all morphological and subjective data, including psychomotoric assessment of dental painin pulpitis may be used in dental practice for evaluation of pain syndrome considered personal story.

Morphological changes of the brain cortex IV-V layers, the structures of n. ambiguus, n. dorsalis and n. vagus ganglia on the model of influenza virus A strains (H3NI) MLD50 in number 50 microns intranasal inoculation in mice aged 6-8 weeks were studied. For assessment of virus-induced pathology 2 series of experiments were carried out. Electron microscopy, morphometric and histological methods, including by Nissl stain were used. LD dose, daily loss of body weight with access to the so-called "endpoint" determined previously. Experimental period from 48 hours to 12 days. It is shown that in n.vagus stem structures in the medulla oblongata (n. dorsalis, n. ambiguus) have the mosaic and the polymorphic nature of the changes - signs of influenza virus cytotropic effect, such as swelling, vacuolation, chromatolysis, less pyknosis and hyperchromatosis. In the period of the greatest weight loss and expressed «endpoint» irreversible changes in the stem structures associated with n. vagus - apoptotic nuclei and neurons massive edema, lipofuscin accumulation have taken place. Results of the study suggest that the parasympathetic nervous system (n. vagus) may be one of the possible route of influenza A virus (H3NI) genomic structures transnerval invasion in the central nervous system during experimental infection.

Background: No accurate estimates of cervical cancer incidence or mortality currently exist in Georgia. Nor are there any data on the population-based prevalence of high-risk (HR) human papillomavirus (HPV) infection, which, in the absence of good-quality screening, is known to correlate with cervical cancer incidence., Methods: We obtained cervical cell specimens from 1309 women aged 18-59 years from the general population of Tbilisi, and also from 91 locally diagnosed invasive cervical cancers (ICC). DNA of 44 HPV types was tested for using a GP5+/6+-based PCR assay., Results: In the general population (of whom 2% reported a previous Pap smear) HPV prevalence was 13.5% (95% CI: 11.6-15.9), being highest in women aged 25-34 years (18.7%) and falling to between 8.6% and 9.5% for all age groups above 34 years. HR HPV prevalence was 8.6% overall, being 6.8% and 38.9% among women with normal and abnormal cytology, respectively. HPV45 (1.6%) was the most common type in women with normal cytology, whereas HPV16 predominated among women with cervical abnormalities (including 7 of 10 histologically confirmed cervical intraepithelial neoplasia 2/3) and among ICC (57.6%). The next most common types in ICC in Georgia were HPV45 and 18 (13.2 and 11.0%, respectively)., Conclusions: We report a relatively high burden of HPV infection in Tbilisi, Georgia. Improving cervical cancer prevention, through screening and/or HPV vaccination, is an important public health issue in Georgia, where 70% of ICC are theoretically preventable by HPV16/18 vaccines., (Copyright © 2010 Elsevier Ltd. All rights reserved.)

Most cervical cancers begin where the endocervix and ectocervix meet. Pap tests (also called Pap smears) are vital in the early detection of cervical cancer. Ecto-endocervical Pap-tests from 230 patients with verified bacterial vaginosis (BV) were studied. Endometrial biopsy was also used in the evaluation of 95 patients (47 with primary diagnosis BV and 48 relapsing BV). Control specimens were obtained from physically and gynecologically healthy females'. Biopsy samples were collected from endometrium of the uterine body. Morphological and morphometrical analysis of data and Pap-test criteria indicate that chronic endometritis (100%) as well as spontaneous abortion syndrome (20-25%) can be reasonably considered as primary and relapsing bacterial vaginosis (BV) associated pathologic processes. The chief morphological phenomena of chronic endometritis involve the severe dystrophic - atrophic alterations in lining and glandular epithelium, simultaneously with the polymorphic cellular infiltration and stromal transformation of the different intensity. Progressive atrophy of epithelium and fibroplastic transformation of stroma evidently contributes to the evolution of the condition preventing the implantation and development of the conceptus.

Atrial myxomas are rare, usually benign, intracardiac tumors composed of mucopolysaccharides. Almost all myxomas are found attached to the endocardium in the atria with vast majority being on the left side and can be removed by surgical resection. Two rare cases of myxomas ablated from the left atrial cavity are presented. Surgical correction, is curative with a low operative mortality and an excellent long term prognosis. Tumor morphology and histological appearance are presented. Effect of age on left atria morphology was observed.

The paper considers the main lines of subepithelial mucosa cells during experimental periodontitis (EP) in albino rats. Macrophage ultrastructure was analysed, quantitative investigation of macrophages, mast cells, plasmo-and lymphocyites was conducted; progressing microcirculatory disorders and development of endothelial dysfunction was found. The authors assumed that the development of inflammatory response including abnormal epithelial and subepithelial mucosa reparation reflects the balance in intracellular composition.

In children aged 11-15. under mild and moderate stage parodontitis the ultrastracture and Citokeratines 10/13 and 14 expression in epithelial lining of oral mucosa were analyzed: 1. in gingival epithelia 2. in alveolar processes epithelia. 14 cases without sings of inflammation serve as control tissue. Total number of cases - 33. After informed consent had been obtained, simples of histological tissue specimens were collected on surgical extraction of the tooth. In the control group decision on the tooth extraction was taken for the orthodontic causes. Our data indicate that: 1. Heterogenity is typical to the oral cavity epithelium: a) Ultrastructural signs of keratinization and dissociation, with typical high activity of the terminal differentiation marker cytokeratin 10/13, predominate in the keratinocytes of gingival mucosa. b) Cells with signs of germination activity predominate in the ultrastructure of mucosa alveolar processes. Such cells express cytokeratin 14, typical to nonkeratinized epithelium. 2. Tissue architectonics as well as protein contents of cytoskeleton (judging by cytokeratine expression) are speared in the parodontal pathology in children, however in contrast to alveolar mucosa, damage to the microcirculatory vessels is more pronounced in gingival mucosa. 3. Expression of cytokeratines 10/13 and 14 may indicate the process of lysis and reparation of periodontal ligament.

Matrix metalloproteinases (MMP) and its tissue inhibitors (TIMP) were studied in 14 affected and 11 "control" samples from children in cases of dental extraction. Cytokeratin 14 coexpression also was analyzed in this materials by immunohistochemical study. Total RNA was extracted and the transcript levels for MMP-19 and TIMP-4 were determined by semi-quantitative real-time reverse transcription-polymerase Chain reaction (RT-PCR). The results demonstrated direct correlation between increased MMP/TIMP ration and inflamed gingival tissue breakdown.