Signs Of Tissue Destruction Research Articles

Adipositas Cordis in Two Cats with Sudden Death

Adipositas cordis (AC) is a rare cardiomyopathy characterized by fatty infiltration of the myocardium without signs of tissue destruction or inflammation. Its diagnosis is challenging and requires histopathological examination. This study describes such cardiomyopathy in two cats that died suddenly. In both cases, anatomopathological examination showed gross lesions indicative of acute heart failure, associated with an increase in subepicardial fat, particularly in the right ventricle. Microscopically, there was an increased amount of subepicardial and intramyocardial adipose tissue in the right ventricular free wall, without signs of cellular degeneration, inflammatory infiltration, necrosis or fibrosis, confirmed by histochemical staining. AC is a rare cardiac pathology, but it should be taken into consideration in feline medicine when a sudden death occurs.

Virom/SARS-CoV2 interakcija - upražnjeno mesto za prirodne komponente

One of the most striking marks of infection caused by the SARS-CoV-2 is the distinguishing heterogeneity of the clinical presentations in a population that varies from asymptomatic to severe forms. Pandemic proportion brings into the foreground the number of people with severe forms of the disease, putting aside the fact that a large portion of the population is an asymptomatic, making them silent carriers of the virus. Additional confusion is made by inconsistent data about the presence of the virus in the nasopharyngeal region and the manifestation of the disease symptoms. Different tissue distribution of virus in the body starting from guts, liver, muscles, kidney etc. without any signs of tissue destruction, opens up the possibility that individuals with negative results of PCR test in the nasopharyngeal swab may also be latent carriers of the infection. Overall clinical presentation of the disease is influenced by the initial protection gained through the accumulated "experience" collected from previous encountering of corona family and noncorona viruses, resulting in overlapping of the humoral and cellular immunity. Apart from this, unjustifiably neglected but very significant form of host defense against infection is disease tolerance based on cohabitation with pathogen. It is important to note that consequences of the disease tolerance in terms of pathological and epidemiological aspects are quite different then classical antiviral immune response. This work will elaborate the impact of virome on the course of infection at all stages taking into account both immune resistance, as an ability of the host immune system to eliminate pathogen, and disease tolerance, as a form of host defense with neutral to positive impact to pathogen load. Also, in accordance with the above mentioned, the potential of naturally occurring compounds to profile the course of infection and to support currently available protocols for COVID-19 treatment was discussed.

Introducing a new scoring system for pap smear in the detection of high-grade squamous intraepithelial lesions in pregnancy (The Luebeck Score).

To construct a scoring system for pap smears to objectify cytological appraisal and to enhance the accuracy and comparability of pap smear interpretation in pregnancy. For development of a scoring system for cell appraisal of pap smears the style of the Modified Masood's Scoring Index for appraisal of cells from fine needle aspirations of breast lesions was used. Cohort analysis of n=54 dysplastic pap smears for polymorphology of cells, anisonucleosis, structure of the nucleus, signs of tissue destruction, nucleus/plasma relation and signs of tumordiathesis. Each criteria was classified into three stages: The first with little evidence for dysplasia (one point), second stage with sporadic evidence (two points) or third stage with frequent evidence (three points). To further evaluate if pregnancy associated cells changes interfere with this scoring system we compared the results of pregnant and non-pregnant women. Histological result was used as an indicator of correctness of the score. Statistical analysis showed a good correlation of the scoring system with histological results. Especially in pregnancy statistical analysis shows promising results (sensitivity 86.67%, Specificity 100%, receiver operating characteristic analysis p≤0.05). The Luebeck Score seems to be a useful approach for appraisal of pap smears in pregnancy. Further studies containing high numbers of cases are needed for further evaluation of potential benefits of the scoring system compared to conventional evaluation of pap smears.

Changes in Hepatic Blood Flow During Transcatheter Arterial Infusion with Heated Saline in Hepatic VX2 Tumor

This study evaluates the influence of transcatheter arterial infusion with heated saline on hepatic arterial and portal venous blood flows to tumor and normal hepatic tissues in a rabbit VX2 tumor model. All animal experiments were approved by the institutional animal care and use committee. Twenty rabbits with VX2 liver tumors were divided into the following two groups: (a) the treated group (n = 10), which received a 60 mL transarterial injection of 60 °C saline via the hepatic artery; (b) the control group (n = 10), which received a 60 mL injection of 37 °C saline via the hepatic artery. Using ultrasonography, the blood flows in both the portal vein and hepatic artery were measured, and the changes in the hemodynamic indices were recorded before and immediately after the injection. The changes in the tumor and normal liver tissues of the two groups were histopathologically examined by hematoxylin and eosin staining after the injection. After the transcatheter arterial heated infusion, there was a decrease in the hepatic arterial blood flow to the tumor tissue, a significant decrease in the hepatic artery mean velocity (P < 0.05), and a significant increase in the resistance index (P < 0.05). On hematoxylin and eosin staining, there were no obvious signs of tissue destruction in the normal liver tissue or the tumor tissue after heated perfusion, and coagulated blood plasma was observed in the cavities of intratumoral blood vessels in the treated group. The changes in tumor blood flow in the rabbit VX2 tumor model were presumably caused by microthrombi in the tumor vessels, and the portal vein likely mediated the heat loss in normal liver tissue during the transarterial heated infusion.

Interleukin-1β, interleukin-1 receptor antagonist, and interleukin-1 soluble receptor II in temporomandibular joint synovial fluid from patients with chronic polyarthritides

Purpose: The aim of this study was to investigate whether interleukin-1β (IL-1β), interleukin-1 receptor antagonist (IL-1ra), or soluble IL-1 receptor II (sIL-1RII) in synovial fluid or plasma is associated with joint pain or signs of tissue destruction in patients with temporomandibular joint (TMJ) involvement of polyarthritides. Patients and Methods: Forty-three patients with TMJ involvement of polyarthritides were included. TMJ resting pain, tenderness to palpation, pressure pain threshold, pain on mandibular movement, and anterior open bite were assessed. TMJ synovial fluid samples and plasma were obtained for analysis of IL-1β, IL-1ra, and sIL-1RII. Results: IL-1β was detected in 18% of the synovial fluid samples and in 44% of the plasma samples. The concentrations of IL-1ra in plasma were lower than in the synovial fluid, whereas the opposite condition was found for sIL-1-RII. IL-1ra in synovial fluid and plasma was associated with low intensity of TMJ pain. sIL-1RII in synovial fluid was associated with low degree of anterior open bite, whereas sIL-1RII in plasma was associated with widespread musculoskeletal pain, TMJ pain and tenderness, and decreased pressure pain threshold over the TMJ. Conclusion: IL-1ra and sIL-1RII are present in different proportions in TMJ synovial fluid and blood plasma from patients with TMJ involvement of polyarthritis. Both of these molecules seem to influence the clinical features of these forms of TMJ inflammation.

Apoptosis in fimbriae of fallopian tubes and endometrium in pyoinflammatory adnexal diseases.

In patients with pyoinflammatory adnexal diseases moderate or intense DNA degradation was observed in the majority of epithelial, stromal, and inflammatory infiltration cell in inflammatory foci in the fimbrial compartment of fallopian tubes without signs of tissue destruction. Expression of TNFR1 gene increased 2.7-fold and expression of Fas gene decreased 3.1-fold compared to intact endosalpinx, which indicates induction of apoptosis triggered by tumor necrosis factor-alpha and inhibition of the Fas-dependent pathway. No signs of apoptosis were detected in the endometrium. Generalized apoptosis in the fimbrial compartment of the tubes can be a mechanism limiting the inflammatory process.

Plasminogen activator inhibitor-type 1 in Lewis lung carcinoma

Plasminogen activator inhibitor-type 1 (PAI-1) was identified in extracts of Lewis lung carcinoma, and its immunohistochemical localization was studied together with that of urokinase-type (u-PA) and tissue-type (t-PA) plasminogen activators. All primary tumors (n = 11) contained heterogeneously distributed immunoreactivity against each of the three components. Most often, areas that contained u-PA immunoreactivity also contained PAI-1 immunoreactivity. However, several areas showed a strong u-PA immunoreactivity, but no or low PAI-1 immunoreactivity. The latter staining pattern was only found in peripheral areas, and usually in areas with histological signs of tissue destruction. Lung metastases always contained u-PA immunoreactivity, while PAI-1 immunoreactivity was found in most, but not all, metastases. t-PA immunoreactivity was found in a few scattered tumor cells, in primary carcinomas as well as metastases. Controls that included absorption with highly purified antigen preparations and immunoblotting, indicated that all the immunoreactivity represented genuine PAI-1, u-PA and t-PA, respectively. The results are consistent with an assumption that the plasminogen activation system, and particularly u-PA and PAI-1, plays a role in regulation of breakdown of extracellular matrix proteins during invasive growth in this carcinoma.