<abstract xmlns="http://www.w3.org/1999/xhtml">

Maintaining a stable oxygen content during the hyperbaric exposure process with breathing air is important for the safety of divers and for diving equipment. This paper presents an analysis of the ability of a measurement system selected for testing1 to control the oxygen content in the breathing atmosphere of a hyperbaric facility. The measurement system was qualified according to the requirements of the supervised process. The evaluation of the measuring system selected for tests, designed to control the oxygen content with the use of MSA procedures2 was carried out in KTPP AMW3 for the DKGN-120 complex4.
</abstract>

Department of Underwater Works Technology

Faculty of Mechanical and Electrical Engineering

Analysis of the Oxygen Measurement System Capability in the Breathing Gas for Divers

<abstract xmlns="http://www.w3.org/1999/xhtml">

The article presents the results of research carried out in the framework of an engineering thesis prepared at the Department of Underwater Works Technology of the Naval Academy in Gdynia. The objective of the work was to develop a method and a station to test the stability of deep-sea ROVs. The study presents the theoretical basis of the method as well as the results of performed experiments.
</abstract>

Stability Testing Method for Underwater ROVs

<abstract xmlns="http://www.w3.org/1999/xhtml">

Recreational diving is becoming an increasingly popular physical activity around the world. The vast majority of people who practice scuba diving are amateurs, often being treated for a number of chronic diseases and having cardiovascular burdens. Due to the high prevalence of diabetes mellitus in the world population and the potential for dangerous complications during diving, there is a need for unified recommendations for safe diving with this condition. Current guidelines from international diving associations are not entirely consistent. This review presents the positions of international diving associations concerning the requirements for diving with diabetes, the scope of diving and recommended management of life-threatening conditions during the dive.
</abstract>

Diving with Diabetes - A Review of Recommendations

<abstract xmlns="http://www.w3.org/1999/xhtml">

In this study, it was assumed that the propensity to risk behavior is a relatively persistent feature of an individual’s behavior. A person prone to risk, having the choice of taking a risky or cautious behavior, usually chooses to choose a risky behavior. The level of propensity to risk is related to the perception of the size of the threat and the motivational tendency to risk behavior. Risk management, and therefore managing your own safety, is a skill that is particularly important among people who undertake activities with a high level of risk. These include all underwater activities. The aim of the research was to find an answer to the question of whether there is a relationship between the level of risk behavior and the subjectively assessed risk in diving? Also, are there differences between different groups of divers in terms of risk behavior?
112 divers from public services (military formations, police, PSP) participated in the study, of which the results of 67 people were finally analyzed. The Ryszard Student’s Risk Behavior Test, the Makarowski Risk Acceptance Scale and the proprietary subjective risk assessment questionnaire were used. It has been shown that among all professional groups of divers, the group of policemen is more prone to risky behaviors than the other groups. No other dependencies have been confirmed.
</abstract>

University of Physical Education in Wrocław

The Propensity to Risky Behaviour and Subjective Risk Assessment Among Selected Groups of Divers

<abstract xmlns="http://www.w3.org/1999/xhtml">

Deltamethrin is a type II pyrethroid. Deltamethrin’s action is characterised by nephrotoxicity, hepatotoxicity and immunotoxicity.
The aim of the study was to evaluate the effect of poisoning with deltamethrin on the levels of interleukin1ß and TNFα in the livers and kidneys of mice.
A total of 24 female mice were divided into 3 groups of 8:
- controls,
- receiving deltamethrin i.p. at the dose of 41.5 mg/kg for 28 days
- receiving deltamethrin i.p. at the dose of 8.3 mg/kg for 28 days.
On day 29 the animals were euthanised, livers and kidneys were obtained, homogenised and centrifuged. The supernatant was used for measuring IL-1ß and TNFα concentration with ELISA tests. The results were analysed with Statsoft Statistica.
The interleukin 1ß concentrations were significantly higher in the kidneys (18.30±16.85) of mice exposed to the higher dose of deltamethrin than in the controls (8.15±4.66) (p&lt;0.05). In the livers of mice receiving 41.5mg/kg deltamethrin it was 203±71.63 vs 46.77±34.79 (p&lt;0.05). In the livers of animals receiving the lower dose it was higher than in the control group (96.51±24.73) (p&lt;0.05). The TNF α was elevated in the kidneys of mice exposed to the higher dose of deltamethrin (6.56±3.26 vs 2.89±1.57)(p&lt;0.05).
Conclusion: Deltamethrin produces a significant increase of interleukin 1ß in the livers and kidneys of mice and so the cytokine seems to be a good marker of hepatotoxicity and nephrotoxicity in the course of subacute poisoning.
</abstract>

Chair and Department of Hygiene and Epidemiology

The Effect of Subacute Poisoning with Deltamethrin on the Levels of Interleukin 1ß and Tumour Necrosis Factor Α in the Livers and Kidneys of Mice

<abstract xmlns="http://www.w3.org/1999/xhtml">

Introduction. Aflatoxins are metabolites produced by Aspergillus flavus and Aspergillus parasiticus. Due to the high prevalence of aflatoxin-containing products they are common issue of the observational studies. Observational studies have demonstrated the hepatotoxic effects of aflatoxins in humans. However, the exact pathogenetic mechanisms of the effect of aflatoxin B1 on the above-mentioned hepatotoxicity have not yet been known.
Aim of the study. The aim of the study was to assess the toxic effects of different doses of aflatoxin B1. The analyze was performed using assessment of concentration of NF-κB in liver tissue homogenates after a 7-day intoxication with this mycotoxin.
Material and methods. The studies were carried out on Wistar male rats which were selected randomly, according to the principle of simultaneity for the control group and the study groups. The concentration of NK-κB was determined by immunoenzymatic ELISA in the obtained supernatants of liver taken from decapitated animals. The statistical analysis was performed with Statistica 13.3 (Statsoft, USA).
Results. The statistical significance of the difference between the concentrations in the control and study group receiving 1.0 mg/kg of aflatoxin B1 and between the control and study group who received aflatoxin B1 at a dose of 2.0 mg/kg body weight (p &lt;0,05) were demonstrated. A significant relationship was also found between the level of dose of aflatoxin B1 administered to the rats and the concentration of NF-κB. Negative correlations were obtained. The higher dose administered to rats - the lower level of measured concentration of NF-κB.
Conclusions. The study of the influence of aflatoxin B1 on the level of NF-κB transcription factor may significantly contribute to understand the mechanism of its action, influence on inflammatory, apoptotic and carcinogenic processes in the liver and determine its safe level in food intended for humans and animals.
</abstract>

Department of Urology and Urological Oncology

Chair and Department Epidemiology and Clinical Resarch Metodology

Department of Obstetrics and Perinatology

Team of Ophthalmology Departments Mazowiecki Hospital Bródnowski

The Influence of Aflatoxin B1 on the Concentration of Nuclear Factor κB in Rats’ Livers

AHEAD OF PRINT

Volume 83 (2024): Issue 2 (May 2024)

Volume 81 (2023): Issue 4 (December 2023)

Volume 80 (2023): Issue 3 (December 2023)

Volume 79 (2022): Issue 2 (June 2022)

Volume 77 (2021): Issue 4 (December 2021)

Volume 76 (2021): Issue 3 (September 2021)

Volume 75 (2022): Issue 2 (March 2022)

Volume 74 (2021): Issue 1 (March 2021)

Volume 73 (2020): Issue 4 (December 2020)

Volume 72 (2020): Issue 3 (September 2020)

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Volume 69 (2019): Issue 4 (December 2019)

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Polish Hyperbaric Research

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