Publications by authors named "Tetiana Vovk"

Article Synopsis
  • The expansion of human habitation disrupts natural habitats, putting humans at risk from potentially dangerous species like scorpions, particularly those from the Buthidae family.* ! -
  • The study aimed to determine the lethal dose (LD) of a newly described scorpion species found in Oman, using male rats to assess the toxicity of its venom.* ! -
  • Results indicated a high lethal dose for the scorpion venom, positioning it among the most toxic scorpions globally, highlighting the need for further research and potential antivenom development.* !
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Objective: Aim: To investigate the possible effect of COVID-19 disease on cytokine profile and some circulating growth factors in patients with multiple sclerosis (MS).

Patients And Methods: Materials and Methods: Serum cytokine levels as well as growth factors content were assessed be means of a solid phase enzyme linked‑immunosorbent assay in 97 MS patients of which 41 had and 56 did not have confirmed COVID-19 in the past 4-6-month period, and 30 healthy individuals who were age‑, and gender‑matched.

Results: Results: Some proinflammatory cytokine (such as TNFα, IFNγ) levels were higher while anti-inflammatory cytokine, namely IL‑4, was lower in MS patients compared to controls indicating Th1/Th2 imbalance.

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Nowadays, more than two billion inhabitants of underdeveloped tropical and subtropical countries are at risk of being stung by scorpions. Scorpion stings annually cause 2000-3000 deaths as they can lead to the respiratory and/or cardiovascular complications. Pathogenesis of lung damage under scorpion envenomation is often comprehensive.

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Background And Objectives: Post-COVID-19 condition is thought to affect 10-20% of people at least 3 months after a diagnosis of COVID-19 and two months of symptoms. Post-COVID-19 condition presents itself with many clinical effects with varying degrees of severity ranging from a mild cough to a life-threatening coagulopathy. Our study aimed to identify a relationship between the titers of anti-SARS-CoV-2 IgG and anticoagulation parameters: antithrombin III (ATIII), protein C (PC) and thrombomodulin (TM).

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Background: Bladder cancer (BC) is an aggressive disease with a poor prognosis. A bladder tumor, like other malignant neoplasms, is characterized by the presence of both cancer cells and stromal cells which secrete cytokines, chemokines, growth factors, and proteolytic enzymes. One such class of proteolytic enzymes are serine proteases, which take part in the tumor microenvironment formation via supporting and contributing to tumor progression.

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The fibrinolytic system plays an important role in controlling blood coagulation at each stage, from thrombin generation to fibrin clot cleavage. Currently, long-term multiorgan dysfunction post-coronavirus disease 2019 (COVID-19) may include coagulation disorders. Little information is available about the potential causes of post-COVID-19 coagulopathy, but one of them may be subpopulation IgG produced by the immune system against SARS-CoV-2.

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Background: The disease COVID-19, caused by SARS-CoV-2 infection, has a systemic effect and is associated with a number of pathophysiological mechanisms that mobilize a wide range of biomolecules. Cytokines and growth factors (GFs) are critical regulators of tissue damage or repair in osteoarthritis (OA) and are being recognized as key players in the pathogenesis of COVID-19. A clear understanding of the long-term consequences of SARS-CoV-2 infection, especially in patients with concomitant chronic diseases, is limited and needs to be elucidated.

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Problem of scorpion envenomation becomes more alarming each year. Main effects of scorpion venom are commonly believed to be related to its neurotoxic properties, yet severe symptoms may also be developed due to the uncontrolled enzymatic activity and formation of various bioactive molecules, including middle-mass molecules (MMMs). MMMs are considered as endogenous intoxication markers, their presence may indicate multiple organ failure.

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Research Background: Despite clearly recognized links between increased body mass and increased risk for various pathological conditions, therapeutic options to treat obesity are still very limited. The aim of the present study is to explore the effect of low-molecular-mass collagen fragments obtained from the scales of Antarctic wild marine fish on rats' visceral and subcutaneous white adipose tissue in a high-calorie diet-induced obesity model.

Experimental Approach: The study was conducted on outbred rats, which were divided into 3 experimental groups: () control, consuming standard food (3.

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Aim: To investigate the ability of collagen peptides derived from a jellyfish of the Antarctic region (Diplulmaris antarctica) to prevent the development of obesity in rats fed a high-calorie diet.

Methods: Collagen peptides were produced by pepsin hydrolysis of jellyfish-derived collagen. The purity of collagen and collagen peptides was confirmed by SDS-polyacrylamide gel electrophoresis.

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Article Synopsis
  • Scorpion venom contains a variety of toxins that can be life-threatening and may increase levels of matrix metalloproteases (MMPs), leading to tissue damage.
  • The study examined the effects of scorpion envenomation on proteolysis in various organs, finding significant increases in activity, particularly in the heart and lungs.
  • Results indicate that metalloproteases play a critical role in the overall proteolytic activity, with increased MMPs and TIMP-1 levels suggesting potential for systemic damage across multiple organs due to uncontrolled protease activity.
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Background: The hemostasis system has been extensively investigated in patients in the acute phase of coronavirus disease 2019 (COVID-19). In contrast, the post-COVID syndrome is a poorly known entity, and there is a lack of information on the mechanisms underlying the hemostasis abnormalities in the post-COVID period.

Aim: To analyze the potential changes in the parameters of the hemostasis system in the post- COVID period in the plasma of donors with different titers of anti-SARS-CoV-2 IgG.

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Background: Obesity is a growing global health problem. Since increased oxidative stress is one of the key pathological mechanisms underpinning overweight and strongly correlates with progression of obesity-related complications we hypothesized that C fullerene nanoparticles, due to their strong antioxidant capacity, could be the promising therapeutic agent in the treatment of this disease. Here we investigated whether the C fullerenes can alleviate diet-induced obesity (DIO) and metabolic impairments associated with it.

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Today, cardiovascular diseases are one of the main causes of disability of the population. Most of the illnesses, including stroke, are accompanied by the appearance immunoglobulin G (IgG) in the blood circulation. According to the literature sources and previous experiments, it is known that IgG made influence on the hemostasis system.

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