Internal Organs Research Articles

Effect of probiotic biopreparation on fatness, organoleptic, and chemical parameters of broiler chicken meat

The relevance of this study was to use the probiotic biopreparation Subtiform in the production of broiler chickens to increase productivity and improve the organoleptic and chemical characteristics of poultry slaughter products. The purpose of this study was to determine the effect of a probiotic biopreparation on the fatness of broiler chickens, the chemical composition of meat and chemical parameters using the developed patented express and optimised methods. The following methods were used: physical, organoleptic, chemical. It was found that the use of Bacillus subtilis and Bacillus licheniformis (2.5×109 CFU/g) with whey powder filler increased productivity, specifically, the live weight of broiler chickens increased by 4.02% (P<0.001) when fed at a dose of 2.0 g/10 dm3 of water and by 4.75% (P<0.001) in experiment 3 compared to the control group. An increase in indicators in the experimental group 3 was found, namely, the average daily weight gain of carcasses – by 8.33% (P<0.001); total weight of the bird carcass and neck giblets – by 26.48% (P<0.001); weight of internal fat – by 1.89 times (P<0.001) compared to the control. Statistical significance (P<0.001) was also found in the increase in the weight of internal organs (stomach, liver, heart, adrenal gland) in experimental groups 2 and 3 compared to the control. The improvement in organoleptic and tasting characteristics of poultry meat and meat broth after feeding the probiotic preparation, specifically in experimental group 3, was summarised. The obtained quantitative and qualitative chemical parameters using express and optimised methods indicated the freshness of broiler chickens meat at (0-4)°C cooling, at which it is allowed to sell poultry carcasses up to 5 days, of control and experimental groups 1, 2, 3. The practical value of this study lies in the use of a probiotic biopreparation by veterinary specialists at broiler chick production facilities to increase the productivity of broiler chickens and improve the quality and safety of their slaughter products

A clinical case of Urbach-Wiethe disease

A clinical description of Urbach – Wiethe disease (lipoid proteinosis), an extremely rare pathology, is presented, currently only 300 cases are known. This hereditary disease, transmitted by an autosomal recessive type, is associated with a mutation of the extracellular matrix 1 (ECM1) gene located on chromosome 1, locus 1q21. It is based on a violation of collagen synthesis and deposition of hyaline in the dermis along the collagen fibers, in the mucous membranes, sometimes in the internal organs. The chemical composition of hyaline is not completely determined; it is noted that it includes collagen, glycoproteins, lipids, proteoglycans. The disease begins in early childhood and is characterized by changes in the ENT organs and skin, confirmed by histological examination, which reveals thickening of the dermis, degeneration of collagen fibers, hyalinosis with deposition around the vessels, in their walls, around the sweat glands of ribbon-like, weakly eosinophilic, homogeneous substances, which include phospholipids, sometimes there may be cracks with deposition of lipids.
 Patient V., born in 1990, the disease began almost from birth with the appearance of polymorphic rashes on the skin and hoarseness of the voice. In 1999, a histological examination of the affected skin was performed, confirming the diagnosis of lipoid proteinosis of Urbach – Wiethe. The skin pathological process is widespread, symmetrical, on the face it is represented by reticulated telangiectatic erythema, along the edge of the lower eyelids there are miliary nodules similar to a string of pearls. Hypoplasia and stagnant erythema of the auricles are determined. There are yellowish lenticular papules on the trunk and limbs, waxy translucent plaques of a dense consistency in the area of the extensor surface of the elbow joints. Besides, secondary hyperpigmentation and foci of atrophy were detected on the face, trunk and limbs. Skin changes are accompanied by lesion of the ENT organs in the form of bilateral maxillary sinusitis, frontitis, chronic pharyngitis, chronic laryngitis. Concomitant pathology is important: polyvalent sensitization, chronic hepatitis B, biliary dyskinesia against the background of gallbladder deformation, chronic gastroduodenitis. The patient has been on disability since 2000, needs dispensary supervision and correction of all identified violations.

Endoscopic Image Enhancement: Wavelet Transform and Guided Filter Decomposition-Based Fusion Approach.

Endoscopies are helpful for examining internal organs, including the gastrointestinal tract. The endoscope device consists of a flexible tube to which a camera and light source are attached. The diagnostic process heavily depends on the quality of the endoscopic images. That is why the visual quality of endoscopic images has a significant effect on patient care, medical decision-making, and the efficiency of endoscopic treatments. In this study, we propose an endoscopic image enhancement technique based on image fusion. Our method aims to improve the visual quality of endoscopic images by first generating multiple sub images from the single input image which are complementary to one another in terms of local and global contrast. Then, each sub layer is subjected to a novel wavelet transform and guided filter-based decomposition technique. To generate the final improved image, appropriate fusion rules are utilized at the end. A set of upper gastrointestinal tract endoscopic images were put to the test in studies to confirm the efficacy of our strategy. Both qualitative and quantitative analyses show that the proposed framework performs better than some of the state-of-the-art algorithms.

Lesions of the heart and parenchymatous organs in patients with COVID-19 and other acute respiratory infections

Based on available literature, this study aimed to critically assess the effect of SARS-CoV-2 and other respiratory viruses on the heart and parenchymatous internal organs, identify their common and distinctive features, assess the frequency of cytokine storm and “post-infection” syndrome, and identify risk factors for severe systemic reaction and damage to internal organs, particularly the heart.
 In the databases of MEDLINE/PubMed, eLibrary, Web of Science, CyberLeninka, and Openmedcom.ru, primary information (full-text and abstract databases) in English and Russian was searched using selected keywords from 2003 to 2023.
 Acute respiratory viral infection pathogens can cause not only respiratory but also cardinal, gastroenterological, neurological, and other complications.
 Acute respiratory viral infections have many similarities in their effects on parenchymal organs. The emergence of new viruses requires in-depth study, and it is important to consider both the distinctive features of the clinical picture of viral infections and the general patterns of influence on internal organs. In the medium term, patients who have COVID-19 may have complex heart damage in the form of a decrease in ventricular ejection fraction, appearance of pericardial effusion, and development of various types of focal myocardial lesions. The combined nature of damage to the heart and parenchymal organs is influenced by background diseases, nature of the course of viral infection, and features of therapy. The features of lesions of parenchymal organs and the heart after acute respiratory viral infection require further study, including their effect on the development of late complications.

Method for assessing the content of molybdenum enzymes in the internal organs of fish

Molybdenum enzymes (Mo-enzymes) contain a molybdenum cofactor (MoCo) in the active site. These enzymes are potentially interesting for studying the survival mechanism of fish under hypoxic water conditions. This is because Mo-enzymes can synthesize nitric oxide from nitrates and nitrites, which are present in high concentrations under hypoxic water conditions. However, there is currently no method for assessing the Mo-enzymes content in the fish internal organs. Methods capable of determining Mo-enzymes content in the fish are of major importance. For this purpose, a method for quantitative determination of MoCo from plant tissues was modified. We demonstrated the Mo-enzyme content assessment by isolated MoCo from the fish's internal organs and the Neurospora crassa nit-1 extract containing inactive NADPH nitrate reductase. The Mo enzyme content was calculated using a calibration curve in nM of nitrites as a product of restored NADPH reductase activity after complementation with MoCo. Here we present a robust laboratory method which can be used to assess the content of Mo-enzymes in the internal organs of fish.•Mo-enzymes play a crucial role in detoxifying toxic compounds. Therefore, it is important to develop a method to accurately determine the amount of Mo-enzymes present. Notably, the method demonstrated the efficiency and accuracy as detected high content of Mo-enzymes in the liver and intestines (P < 0.0001). The obtained data on the distribution of Mo-enzymes in the internal organs of this species correspond to that of other vertebrates. Here, we present a rapid, sensitive, accurate and accessible method.•The developed method is simple and easy to use. Importantly, the protocol does not require complex manipulations, and the equipment used is available in most laboratories. The article provides step-by-step instructions for reproducing the method.

Lab on chip based self-adjustable liposomes for rapid wound healing: An in depth in vitro, in vivo and higher dose toxicity investigation

Thanks to microfluidic technology, different nano-delivery systems are becoming clinically viable. Using a novel and rapid microfluidic hydrodynamic focusing (MHF) method (lipids on chip) we developed self-adaptable liposomes (SLs) containing cefpodoxime proxetil (CP) for the treatment of skin infections caused by Staphylococcus aureus. SLs were optimized using different flow rate ratios in the MHF method and the final formulation CPT3 was found to be the best in terms of particle size (68.27 ± 01.15 nm), % entrapment efficiency (% EE: 82 ± 1.5), polydispersity (PDI: 0.2 ± 0.012), and degree of deformability (DOD: 4.7 ± 0.18 nm). Rats (Sprague Dawley) treated with a self-adaptable CPT3 liposomal formulation recuperate skin injury, exhibited reduced bacterial counts (<106 CFU/mL) in the wounded region, and completely restored (100 %) on day 21. Rat survival, in vivo dermal pharmacokinetics and ex vivo-in vivo relationship were also investigated. Rats treated with an even 10-fold higher dose (100 mg/kg/day) of CP using an equivalent CPT3 formulation did not show any symptoms of toxicity as revealed by hematological, biochemical, and internal organ assessment observations. Finally, the developed CPT3 formulation with special interest in patients with high-risk skin injuries not only delivered CP in a controlled manner but was also clinically effective and safe as it did not produce any serious adverse events even at 10× higher doses in the infected rats.

Microstructural analysis of meat and internal organs of broiler chickens using a probiotic biological product

Probiotic preparation containing bacteria of the genus Bacillus subtilis and Bacillus licheniformis used for feeding broiler chickens to improve feed digestion, nutrient absorption, increase immune status and productivity, and for the prevention and treatment of various poultry diseases. The purpose of the study is to conduct histological tests of broiler chicken slaughter products when they were administered a probiotic biologic medical product in doses of: 0.5 g, 2.0, and 4.0 g per 10 dm3 of water. The material was examined by the histological method. It was found that the muscle fibres in the pectoralis major are of the same type, evenly directed, the cytoplasm of muscle fibres is moderately eosinophilic, uniformly light pink, and minor layers of adipose tissue are found between the bundles of muscle fibres. The morphological architectonics of the heart muscle are preserved, cardiomyocytes are homogeneous and have a clear orientation. The microstructure of the liver of broiler chickens is unchanged: hepatocytes are collected in the same type of groups; the central veins are desolate; the cytoplasm of these cells is homogeneous, clear, and pink; the nuclei are weakly basophilic. In the spleen, the follicular structure is formed, leukocytes are diffusely placed at different stages of differentiation; vessels in significant numbers, thickened, of different calibre. The cuticle of the muscular part of the stomach contains the epithelial layer, the volume part of the connective tissue base layer is revealed; muscle fibres are located under the mesenchymal base of the cuticle. Lungs by morphological structure have bronchial tubes throughout the structure, which contain blood cells. According to the results of the conducted studies, a beneficial effect of a probiotic biological product at a dose of 4.0 g/10 dm3 of water on the morphology of the pectoralis major and internal organs of broiler chickens was established. Therefore, a probiotic at a dose of 4.0 g/10 dm3 of water during the drinking of broiler chickens can be recommended to increase productivity and produce safe slaughter products. The practical significance of the results obtained is to determine the features of the effect of feeding poultry with different doses of probiotics on the microstructure of its slaughter products, which is important for obtaining the best effect from its use

The acute toxicity of cypermethrin, emamectin benzoate and imidacloprid on red swamp crayfish (Procambarus clarkia)

Pesticide contamination is commonly found as a mixture of different pesticides rather than individual compounds. However, the regulatory risk evaluation is mostly based on the effects of individual pesticides. In the present study, we aimed to investigate the individual and combined toxicities of cypermethrin (CYP) with emamectin benzoate (EMB) and imidacloprid (IMI) to crayfish using acute indices and various sub-lethal endpoints. Semi-static bioassay procedures were followed in the experiment. The 24, 48, and 72 h LC50 values (with 95% confidence limits) of CYP for crayfish were calculated as 0.141, 0.137, and 0.135 μg/ml, respectively, which were higher than those of IMI (75.813, 72.345, 70.568 μg/ml) and EMB (34.581, 27.930, 22.298 μg/ml). Pesticide mixtures of CYP and EMB displayed a synergistic response to crayfish; the LC50 was 0.053, 0.050, and 0.048 μg/ml, which was lower than when only CYP was present. Pesticide mixtures of CYP and EMB were found to be highly toxic to crayfish. At the physiological level, both individuals and mixtures of pesticides caused severe injury to the internal organs of crayfish. Taken together, the synergistic effects indicated that it was highly important to include joint toxicity studies when assessing the risk of pesticides.

Evaluation of the Effectiveness of an Alternate Diatom Extraction Procedure in Diatomological Study

Background: The “Diatom Test” is based on the recovery of diatoms in high concentration in the organs of drowned persons because diatoms pass through the alveoli into the great circulation. Acid digested extracts of various internal organs and water collected from waterbodies demonstrate the presence of diatoms. If quantitatively and qualitatively these diatoms match to each other, that is the confirmatory diagnosis of death due to drowning in that drowning medium. This study was conducted to analyze the effectiveness of alternate method of diatom extraction using diluted Sulphuric acid solution and to compare its effectiveness with the traditional method of extraction of diatoms using concentrated nitric acid.Methods: It was a prospective study. Samples were collected from ten different water bodies which included lakes,rivers, canals and reservoirs, for a period of one year in all the seasons. The pH and temperature of water were recorded during sampling. From each of water samples, diatoms were extracted using both classical and alternate method. And then compared by observing the diatoms at 100X magnification under compound microscope. Total 22 genera of diatoms were identified. Most of them were pennales and few were centrales. The time demanded for complete digestion of samples with strong acids like concentrated nitric acid was much lesser time than with diluted acids as it hasstronger digestive capability in comparison to diluted sulphuric acid. The structures of different diatoms specifically Cyclotella, Cybella, Navicula were better found in almost intact state with clear background after digestion by diluted sulphuric acid.Conclusion: Depending on different criterion, digestion by diluted sulphuric acid has procured better result than concentrated nitric acid digestion method. Therefore, for qualitative and quantitative diatom analysis alternate diatom extraction method is a better choice than traditional method.

The Dogs Prey – A Canine Menace: A Case Report

A 13 years old male found dead with several bite marks in the body, with some 8 to 10 dogs around that area.The deceased body was brought to Mortuary, Osmania General Hospital at 03:30 PM on 19/05/2022 by the Investigation Officer and requested for postmortem examination under section 174 Criminal Procedure Code.On postmortem examination, there were multiple claw marks, avulsed lacerations, puncture wounds present all over the body, laceration of platysma and a retro-laryngeal hematoma with fracture of 6th cervical vertebrae were noted, all were suggestive of canine tooth injury. All the internal organs were pale and cause of death was given as massive haemorrhage consequent to animal bites over head, neck and trunk.

Acute Toxicity and Antioxidant and Antibacterial Activities of Kyllinga polyphylla Willd. ex Kunth, Cyperaceae Family.

Kyllinga polyphylla Willd. ex Kunth. (KP) is a wild herb commonly distributed in the Mekong Delta, Vietnam. This study was carried out to evaluate the antibacterial and antioxidant activities and acute toxicity of KP before conducting studies at the in vivo level. All parts of KP had the free radical scavenging capacity of DPPH, in which the root methanol extract had the best antioxidant capacity (EC50 = 9.54 ± 0.37 μg/mL). Most of the extracts had a wide range of antibacterial spectra. The methanol and ethanol extracts (200 mg/mL) have ability to resist eight common bacterial strains (including Staphylococcus aureus, Listeria innocua, Bacillus subtilis, Bacillus cereus, Escherichia coli, Salmonella sp., Pseudomonas aeruginosa, and Enterococcus faecalis), which is equivalent to the antibacterial activity of amoxicillin and tetracycline at a concentration of 1 mg/mL. KP extracts did not cause death at a dose of 5000 mg/kg body weight and did not significantly change the biochemical, hematological, as well as histological structures of internal organs in toxicity-tested mice in comparison with the control. The research results showed that KP should be more interested in research that supports disease treatment, synthetic extraction of antibiotics, or other in vivo studies.

Ginsenoside Rb1 prevents age-related endothelial senescence by modulating SIRT1/caveolin-1/enos signaling pathway

BackgroundAdvancing age is one of the independent risk factors for cardiovascular disorders. The Compendium of Materia Medica, a classic book on traditional Chinese medicine, states that ginseng “harmonizes the five internal organs, calming the spirit and prolonging the years of life." Considered one of the primary bioactive compounds derived from Panax ginseng, ginsenoside Rb1 (g-Rb1) has been scientifically suggested to possess anti-senescence efficacy. More research is needed to explore the vascular pharmacological activity and potential clinical application value of g-Rb1. Aims of the studyOur previous study demonstrated that g-Rb1 could mitigate cellular senescence via the SIRT1/eNOS pathway. This study was performed to explore the exact mechanisms by which g-Rb1 modulates the SIRT1/eNOS pathway. Materials and methodsWe used human primary umbilical vein endothelial cells (HUVECs) to establish a replicative ageing model. Real-time (RT‒PCR), western blotting, small interfering RNA (siRNA), and immunoprecipitation were conducted to detect the effect of g-Rb1 on the SIRT1/caveolin-1/eNOS axis. ResultsG-Rb1 increased NO production and alleviated replicative senescence of HUVECs. The application of g-Rb1 elevated the mRNA and protein abundance of both SIRT1 and eNOS while concomitantly suppressing the expression of caveolin-1. Inhibition of SIRT1 and eNOS by siRNAs suppressed the anti-senescence function of g-Rb1, while caveolin-1 siRNA could enhance it. G-Rb1 decreased the acetylation level of caveolin-1 and increased NO production, which was suppressed by SIRT1 siRNA. Both g-Rb1 and caveolin-1 siRNA could reduce the acetylation level of eNOS and increase NO production. ConclusionG-Rb1 prevents age-related endothelial senescence by modulating the SIRT1/caveolin-1/eNOS signaling pathway.

Pathogenic Potential of Coagulase-Positive Staphylococcus Strains Isolated from Aviary Capercaillies and Free-Living Birds in Southeastern Poland.

The aim of the study was to determine the occurrence and characteristics of coagulase-positive Staphylococcus strains in the carcasses of wild birds and aviary capercaillies in Southeastern Poland. In total, samples taken from 333 birds were examined. The material consisted of swabs from the internal organs of dead birds (heart, liver, and spleen), the tarsal joints, and mucous membranes (conjunctiva and palatine fissure), as well as from unhatched embryos. The isolated Staphylococcus strains were tested for sensitivity to nine antimicrobial agents and the presence of selected virulence genes. An analysis of the similarity of isolates within species was performed using pulsed-field gel electrophoresis (PFGE). The result indicates that coagulase-positive strains accounted for 5.7% and belonged to the species: Staphylococcus aureus, Staphylococcus pseudintermedius, and Staphylococcus delphini. Among isolated strains, 15.8% were multidrug resistant. The most frequently detected virulence genes were hla in 58% of isolates and hlb and hld in 47.4% of isolates. The results of multiplex PCR showed the presence of genes responsible for the production of enterotoxins C, B, E, and J, in single isolates. It can be concluded that coagulase-positive Staphylococcus strains accounted for a small percentage of staphylococci isolated from free-living birds in the study area. The occurrence of multidrug-resistant coagulase-positive Staphylococcus strains in aviary capercaillies suggests that they play a role in the transmission and spread of resistant strains into the environment. Free-living birds may also be a reservoir of enterotoxigenic Staphylococcus strains.

Assessment of the state of autonomic dysfunction in patients with tuberculosis of the respiratory system and in combination with HIV infection in modern conditions

The autonomic nervous system (ANS) is an important part of the human nervous system responsible for regulating internal organs and maintaining the internal environment of the body. Adequate functioning of the ANS supports homeostasis is the internal stability of the body and regulates many functions in it, such as cardiac activity, breathing, etc. TB-related stress and inflammation affect have influence at the balance of sympathetic and parasympathetic activity. Affecting the work of the peripheral nervous system, it becomes possible to influence at the system of homeostasis of the body through its regulatory systems. Improving the diagnostics of autonomic dysfunction and identifying its dysfunction will provide an integrated individualized approach to treatment and will make a significant contribution to increasing the effectiveness of therapy for patients with tuberculosis.Aim. Diagnosis of the state of the autonomic nervous system by its main indicators using available informative methods for assessing its functional state in patients with respiratory tuberculosis, including in combination with HIV infection at the beginning of treatment and detecting the level of its damage for further correction with the prescription of pathogenetic therapy.Materials and methods. The functional state of the autonomic nervous system has been investigated in 260 people. In the study, 2 groups were formed: a control group (CG) of 70 healthy persons and a monitoring group (MG) of 190 newly diagnosed patients with tuberculosis. There are 3 subgroups in MG. The 1 subgroup included 65 patients with pulmonary tuberculosis, in whom the function of ANS was studied by conventional examination methods, and in 64 patients with tuberculosis 2 subgroups and 61 patients with tuberculosis in combination with HIV infection 3 subgroups using Varikard 2.51. Calculations were carried out in the program SPSS Statistics v. 23.Results and discussion. Comparison of the frequency of autonomic dysfunction in patients with MG, subgroup 1 with that in the CG according to questionnaires No. 1 (χ2=36.346; p&lt;0.001) and No. 2 (χ2=50.885; p&lt;0.001), HR per minute (χ2=31.989; p&lt;0.001), Kerdo index (χ2=30.008; p&lt;0.001), cold sample (χ2=36.549; p&lt;0.001) revealed high reliability of differences and indicated the predominance of sympathicotension, which was determined 7 times more often in patients. At the beginning of treatment, in patients with concomitant HIV infection was detected a more pronounced dysfunction of ANS with a predominance of its sympathetic link, which was found 9.3 times more often than in healthy persons and 2.3 times more often than in patients without HIV infection. Comparing the frequency of PARS in the «normal zone» in the CG and in the 2 subgroup of MG (t1=5.01; p1&lt;0,001; t2=3,69; p2&gt;0.001), in CG and in MG subgroup 3 (t1=3.61; p1&lt;0.001; t2=3.61; p2&lt;0.001) high significant differences were identified, indicating a significant predominance of regulatory process disorders in patients with tuberculosis and especially when combined with HIV infection.Conclusion. The revealed disorders in the work of ANS patients with tuberculosis and in combination with HIV infection are associated with intoxication and asthenovegetative syndrome. Monitoring of heart rate variability can be used in medical research, as well as in clinical practice to assess the state of the autonomic nervous system in patients with tuberculosis and when combined with HIV infection, determine the application point for the effects of pathogenetic therapy in order to improve the results and effectiveness of the treatment.

Intelligent robotic sonographer: Mutual information-based disentangled reward learning from few demonstrations

Ultrasound (US) imaging is widely used for biometric measurement and diagnosis of internal organs due to the advantages of being real-time and radiation-free. However, due to inter-operator variations, resulting images highly depend on the experience of sonographers. This work proposes an intelligent robotic sonographer to autonomously “explore” target anatomies and navigate a US probe to standard planes by learning from the expert. The underlying high-level physiological knowledge from experts is inferred by a neural reward function, using a ranked pairwise image comparison approach in a self-supervised fashion. This process can be referred to as understanding the “language of sonography.” Considering the generalization capability to overcome inter-patient variations, mutual information is estimated by a network to explicitly disentangle the task-related and domain features in latent space. The robotic localization is carried out in coarse-to-fine mode based on the predicted reward associated with B-mode images. To validate the effectiveness of the proposed reward inference network, representative experiments were performed on vascular phantoms (“line” target), two types of ex vivo animal organ phantoms (chicken heart and lamb kidney representing “point” target), and in vivo human carotids. To further validate the performance of the autonomous acquisition framework, physical robotic acquisitions were performed on three phantoms (vascular, chicken heart, and lamb kidney). The results demonstrated that the proposed advanced framework can robustly work on a variety of seen and unseen phantoms as well as in vivo human carotid data. Code: https://github.com/yuan-12138/MI-GPSR. Video: https://youtu.be/u4ThAA9onE0.

Epidemiology of work-related fall injuries resulting in hospitalisation: individual and work risk factors and severity

ObjectivesInjuries at work are common and costly for individuals and employers. A common mechanism of workplace injury is through falls, but there have been few epidemiological studies of risk factors....

Pathomorphological changes in the organs in aspergillosis in the shouter swan (clinical case)

Consideration and analysis of diseases of wild bird species is complicated, especially those listed in the Red Book. This work aimed to identify the pathomorphological features of the manifestation of aspergillosis in the mute swan and to assess the impact of this disease on the microbiocenosis of the lungs and the morphological structure of organs without cavities. The scientific work was conducted at the Department of Anatomy and Physiology of the Federal State Budgetary Educational Institution of Higher Education of the State Agrarian University of the Northern Trans-Urals. The object of study was the internal organs of a mute swan delivered for a post-mortem autopsy to determine the cause of death of the bird. All internal organs were examined pathoanatomically, and morphometry was performed and carried out bacteriological and mycological studies of the lungs according to traditional methods in microbiological practice. Histological study of such internal organs as the liver, kidneys and spleen was carried out using the generally accepted method. As a result of the analyses, it was established that a characteristic feature of the pathomorphological manifestation of aspergillosis was a topical lesion of the respiratory system with the formation of multiple tumour-like foci of two types in the lungs anddestructive changes in the structure of the tissue of the liver, kidneys and spleen. Congestive venous hyperemia is expressed in all organs, which indicates chronic heart failure. In the liver and kidneys, there are pronounced signs of tissue necrosis, which is a sign of the toxic effects of this disease on the body. In the spleen of the mute swan, the growth of red pulp may indicate an increase in the functioning of the immune system in this pathology. Five types of microorganisms from different subkingdoms were isolated from the mute swan’s lungs. Taking into account the peculiarities of the development of pathological changes and the degree of priority of one or another type of microorganism in the formation of lung pathology in birds, it has been established that Aspergillus fumigatus is the leading pathogen in the development of pathological changes in the lungs of the mute swan.

Epizootological Features and Prevention of Fascioliasis in Sheep on the Julfa District Territory

The article reflects the epizootological features of fascioliasis in sheep kept in various individual and farm enterprises on the territory of the Julfa district, and the results of studies aimed at studying preventive measures against helminthiasis. As a result of the studies, carried out, it was found that both types of fascioles parasitize in animals in farms: Fasciola hepatica Linnaeus, 1758 and Fasciola gigantica Cobbold, 1855. According to the results of examination of internal organs (liver and gallbladder) of 194 head pf sheep, in which an incomplete helminthological autopsy was performed, the intensity of invasion (II) was 1.1 helminth/animal, and the extensiveness (IE) was 37.6%. When analyzing the intensity of the spread of invasion depending on the altitude zones of the terrain, in 2023, during the helminthological examination of the internal organs of animals in mountainous and foothill areas, fascioles were not detected. And when examining during the autopsy of the internal organs of animals in farms located near swampy areas in the lowland zone, helminths were observed. Since that year the air temperature was higher than the annual norm, which led to the drying of stagnant water in many areas, the intermediate host organisms of fascioles died, as a result, this led to a decrease in the percentage of infection.

ERK-mediated curvature feedback regulates branching morphogenesis in lung epithelial tissue

Intricate branching patterns emerge in internal organs due to the recurrent occurrence of simple deformations in epithelial tissues. During murine lung development, epithelial cells in distal tips of the single tube require fibroblast growth factor (FGF) signals emanating from their surrounding mesenchyme to form repetitive tip bifurcations. However, it remains unknown how the cells employ FGF signaling to convert their behaviors to achieve the recursive branching processes. Here, we show a mechano-chemical regulatory system underlying lung branching morphogenesis, orchestrated by extracellular signal-regulated kinase (ERK) as a downstream driver of FGF signaling. We found that tissue-scale curvature regulated ERK activity in the lung epithelium using two-photon live cell imaging and mechanical perturbations. ERK activation occurs specifically in epithelial tissues exhibiting positive curvature, regardless of whether the change in curvature was attributable to morphogenesis or perturbations. Moreover, ERK activation accelerates actin polymerization preferentially at the apical side of cells, mechanically contributing to the extension of the apical membrane, culminating in a reduction of epithelial tissue curvature. These results indicate the existence of a negative feedback loop between tissue curvature and ERK activity that transcends spatial scales. Our mathematical model confirms that this regulatory mechanism is sufficient to generate the recursive branching processes. Taken together, we propose that ERK orchestrates a curvature feedback loop pivotal to the self-organized patterning of tissues.

Surgical aspects of the treatment of a patient with actinomycosis of the colon complicated by the formation of a colovesical fistula

Actinomycosis is a chronic bacterial infection caused by bacteria from the Actinomycetaceae family. The causes of abdominal actinomycosis are usually destructive appendicitis, prolonged presence of an intrauterine contraceptive or perforation of the colon. Of the internal organs, the left colon and sigmoid colon are most often affected, which often leads to surgical complications. At the same time, diagnosis is significantly difficult due to the nonspecific nature of the clinical presentation, which is similar to that of oncological diseases, and verification of the process is possible only with microscopic examination in a specialized institution.&#x0D; A clinical case demonstrating the difficulties of diagnosis and treatment of widespread abdominal actinomycosis complicated by the development of a colovesical fistula is presented.