scholarly journals QUANTITATIVE PARAMETERS OF NITRATES IN URINE AND N-NITROSODIMETHYLAMINE IN BLOOD AS MARKERS OF THE ORAL EXPOSURE TO NITRATES INTRODUCED WITH DRINKING WATER

2018 ◽  
Vol 97 (11) ◽  
pp. 1087-1092
Author(s):  
N. V. Zaitseva ◽  
T. S. Ulanova ◽  
Tatyana V. Nurislamova ◽  
N. A. Popova ◽  
O. A. Maltseva
Keyword(s):  
Drinking Water ◽  
Experimental Studies ◽  
The Body ◽  
Oral Exposure ◽  
Target Area ◽  
Nitrate Level ◽  
Blood Samples ◽  
Comparison Area ◽  
Mass Spectrometric Detector

Introduction. The nitrate entry into the body with drinking water might lead to endogenous nitrotyrosine and N-nitrosamine formation. The study aims to prove quantitative measurement of N-nitrosodimethylamine in blood and nitrates in urine as markers of the exposure to nitrates entering the body with drinking water. Material and methods. Analysis of blood samples for N-nitrosodimethylamine was carried out using Agilent gas chromatograph with quadrupole mass spectrometric detector. When preparing blood samples, an automatic system for solid extraction Sepaths was used. Studies of urine samples for nitrates were carried out using the system of capillary electrophoresis “Kapel”. The target audience includes two groups. Children consuming drinking water with nitrate level exceeding hygienic norm by 1.2 times and N-nitrosodimethylamine level exceeding by 1.6 times. The second group included children consuming drinking water of satisfactory quality. The establishment of cause-effect relationships is carried out using the package of applied programs Statistica 6.0. Results. The nitrate level in drinking water of target area was 51.7 mg/dm3, what is by 4.7 times higher than in comparison area of 10.9 mg/dm3. The N-nitrosodimethylamine level was at the level of 0.016 mg/dm3, which is by 2.5 higher than in the comparison area of 0.0065 mg/dm3. Discussion. The long-term exposure to nitrate and N-nitrosodimethylamine in the drinking water was found out to form in the children’s blood of first group the N-nitrosodimethylamine accounted of 0.0045±0.0014 mg/dm3 i.e. by 1.5 times higher in comparison with the second group (0.003±0.0009 mg/dm3). In the urine of children from the first group, the nitrates were by 1.5 times more than in the urine of children in the second group. Experimental studies proved that the concentration of nitrates in the urine and N-nitrosodimethylamine in the blood might be considered as markers of the oral exposure and correspond to the permitted level for nitrates in the urine of 43.7 mg/dm3 and N-nitrosodimethylamine in the blood of 0.003 mg/dm3 when nitrate concentration in drinking water is from of 45-51.7 mg/dm3 and N-nitrosodimethylamine from of 0.01-0.016 mg/dm3.

ANALYSIS OF ABDOMINAL TYPHOID INCIDENCE IN THE SOUTH REGION OF THE KYRGYZ REPUBLIC

2020 ◽  
pp. 43-48
Author(s):  
Zakirova J.S. ◽  
Nadirbekova R.A. ◽  
Zholdoshev S.T.
Keyword(s):  
Drinking Water ◽  
Typhoid Fever ◽  
Risk Groups ◽  
The Body ◽  
Kyrgyz Republic ◽  
Radiation Factor ◽  
High Quality ◽  
Two Generations ◽  
Immunological Deficiency

The article analyze the long-term morbidity, spread of typhoid fever in the southern regions of the Kyrgyz republic, and remains a permanent epidemic focus in the Jalal-Abad region, where against the low availability of the population to high-quality drinking water, an additional factor on the body for more than two generations and radiation factor, which we confirmed by the spread among the inhabitants of Mailuu-Suu of nosological forms of the syndrome of immunological deficiency, as a predictor of risk groups for infectious diseases, including typhoid fever.

Transplacental Toxicity and Carcinogenesis Studies in Rats with Hexamethylenetetramine

1970 ◽  
Vol 56 (6) ◽  
pp. 325-334 ◽  
Author(s):  
Giuseppe Della Porta ◽  
José R. Cabral ◽  
Giorgio Parmiani
Keyword(s):  
Drinking Water ◽  
Body Weight ◽  
Wistar Rats ◽  
The Body ◽  
Carcinogenic Activity ◽  
Long Term Experiments ◽  
Pregnancy And Lactation ◽  
Successive Generations ◽  
And Control

In a previous paper (Fd Cosmet. Toxicol., 6: 707–715, 1968) it was reported that hexamethylenetetramine (HMT) had no carcinogenic activity in long-term experiments in mice and rats. In the present study, 12 ♀ and 6 ♂ Wistar rats were given 1% HMT in the drinking water starting 2 weeks before mating. The females were kept under treatment during pregnancy and lactation. A similar untreated group of 12 ♀ and 6 ♂ served as control. Twelve treated females and eleven controls became pregnant and gave birth to 124 and 118 babies respectively; no malformations were noted. From these animals, 24 for each sex were continued on the 1% HMT up to the 20th week of age or were kept untreated. The body weight of treated animals was significantly lower than that of controls one, only up to the 9th week of age for the males and up to the 13th week for the females. At the end of the treatment both groups were sacrificed; the weight of organs was identical in the treated and control animals; there were no gross or histological pathology. In a second experiment, rats were given 1% HMT in the drinking water for 3 successive generations, up to the age of 40 weeks in the F1 and F2 groups and of 20 weeks for F3. The three groups were composed of 13 ♂ and 7 ♀, 15 ♂ and 11 ♀, 12 ♂ and 12 ♂, respectively. In addition, a group of 16 ♂ and 16 ♀ descendants of 2% HMT treated parents, were given 2% HMT for 50 weeks. A group of 48 ♂ and 48 ♀ served as untreated controls. All groups were kept under observation for over 2 years of age. No evidence of carcinogenicity was found in any of the HMT-treated groups.

scholarly journals Biological effects of oxygen-enriched drinking water. Review. Part 2

2021 ◽  
Vol 100 (1) ◽  
pp. 25-29
Author(s):  
Jurii A. Rakhmanin ◽  
Natalija A. Egorova ◽  
Rufina I. Mihajlova ◽  
Irina N. Ryzhova ◽  
Marina G. Kochetkova
Keyword(s):  
Drinking Water ◽  
Biological Effect ◽  
Biological Effects ◽  
Human Life ◽  
Experimental Studies ◽  
The Body ◽  
Molecular Response ◽  
Oxygen Homeostasis ◽  
Generalized Peritonitis ◽  
Negative Effect

Human life on Earth depends on the continuous availability of oxygen. Conditions for the entry of oxygen into the body’s cells change in time and space, are easily broken, thus causing the possibility of development of hypoxia - a condition of oxygen starvation of tissues. The second part of the review is devoted to information about the successful use of oxygen-rich water in domestic therapeutic and surgical practice in complex treatment to reduce the negative effect of hypoxia in patients with chronic heart failure and generalized peritonitis complicated by intestinal insufficiency syndrome. Authors consider a common method for improving the supply of oxygen to the body using enteral oxygen therapy - oxygen cocktails in diseases of the cardiovascular system, lungs, bronchi and gastrointestinal tract, atopic dermatitis, placental insufficiency, as well as to improve physical performance, reduce the level of neuroticism and normalize the psychoemotional status. The first part of the review provides data on the modern understanding processes providing oxygen homeostasis in cells, on the critical component responsible for regulating the molecular response to hypoxia - the Hypoxia-Inducible Factors (HIFs) of the family of transcription factors. The possibility to compensate for the lack of oxygen in the body by delivering it to cells and tissues was indicated to consider water and various oxygen cocktails. Data from experimental studies of the biological effect of oxygenated drinking water are analyzed, as well as the results of studying the effects of oxygen-enriched drinking water with the participation of volunteers. The issue of the formation of oxygen (free) radicals when drinking oxygen-enriched drinking water is considered. The review draws specialist’s attention to the problem of the biological effect of oxygen-enriched drinking water, its insufficient knowledge and the possible yet unrealized potential in terms of preventing various diseases and maintaining optimal human health.

scholarly journals Long-term Effect of Water Pollutants (Heavy Metals) on the Morphofunctional State of the Adult Rat's Pituitary Gland

2021 ◽  
Vol 6 (4) ◽  
pp. 172-178
Author(s):  
N. B. Hryntsova ◽  
◽  
A. M. Romanyuk
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Pituitary Gland ◽  
Adult Male ◽  
The Body ◽  
Male Rats ◽  
Structural Components ◽  
Experimental Animals ◽  
Experimental Group

In some northern regions of Ukraine there is an increased accumulation of salts of heavy metals in soil and drinking water, which negatively affect the health of the population and become a risk factor for many diseases. The role of the pituitary gland in the regulation of functional disorders of hormonal homeostasis in various pathological conditions is extremely important. The purpose of the study is to study the morphological, morphometric and biochemical rearrangements of the structural components of the adenohypophysis of adult male rats under conditions of long-term exposure to salts of heavy metals. Materials and methods. The experiment was performed on 24 white adult male rats, which were divided into 1 control and 1 experimental group. The experimental group consisted of rats, which for 90 days consumed ordinary drinking water, saturated with a combination of salts of heavy metals: zinc (ZnSO4 · 7H2O) – 5 mg/l, copper (CuSO4 · 5H2O) – 1 mg/l, iron (FeSO4) – 10 mg/l, manganese (MnSO4 · 5H2O) – 0.1 mg/l, lead (Pb (NO3) 2) – 0.1 mg/l and chromium (K2Cr2O7) – 0.1 mg/l. Results and discussion. Long-term effects on the body of experimental animals of salts of heavy metals caused a pronounced compensatory-adaptive changes in the pituitary gland of experimental animals of hypoxic nature. Morphological changes in the organ were accompanied by plethora of venous bed, deterioration of rheological properties of blood, increase in the area of connective tissue component of the gland, violation of histoarchitectonics of epithelial trabeculae, edema in the parenchyma, increase in linear indicators of the pituitary gland. Toxic effects of salts of heavy metals negatively affected the cellular composition of the adenohypophysis: there was an increase in the number of chromophobes and a decrease in the number of chromophilic acidophiles and basophils compared with control animals. At the same time, the increase in linear parameters, area of nuclei and cytoplasm of adenocytes can be attributed both to their compensatory hypertrophy and due to edema processes in the gland caused by deepening hypoxic effects and impaired blood flow from the organ as a result of venous plethora. Conclusion. Morphometric and biochemical parameters of the structural components of the anterior lobe of the adenohypophysis at 90 days of exposure to salts of heavy metals, of course, indicate a significant stress of adaptive processes by the adenohypophysis in response to stressors (salts of heavy metals)

scholarly journals Recent Biomarkers for Monitoring the Systemic Fluoride Levels in Exposed Populations: A Systematic Review

2021 ◽  
Vol 18 (1) ◽  
pp. 317
Author(s):  
Jesús Lavalle-Carrasco ◽  
Nelly Molina-Frechero ◽  
Martina Nevárez-Rascón ◽  
Leonor Sánchez-Pérez ◽  
Aida Hamdan-Partida ◽  
...  
Keyword(s):  
Systematic Review ◽  
Drinking Water ◽  
Volcanic Rocks ◽  
The Body ◽  
Subchronic Exposure ◽  
Different Populations ◽  
Different Sources ◽  
Digital Search ◽  
Better Than

Fluorides are compounds that can be found in the minerals of soil with volcanic rocks. Different populations are exposed to high levels of fluorides through drinking water that, due to their chronic intake, cause several types of damage to health. Nails and hair, denominated as recent biomarkers, have been employed for monitoring systemic fluoride from long-term exposure to fluorides. The aim of this study was to perform a systematic review of the use of recent biomarkers for monitoring systemic fluoride levels in exposed populations and verify their validity in the measurement of the fluorine (F−) concentration within the body. A digital search was performed in the databases PubMed/Medline, Springer Link, Cochrane, and Scopus of original articles that employed recent biomarkers for monitoring systemic F−. Seventeen articles were included in this analysis; the recorded variables were the F− amount in each assessed biomarker, source of exposure, and total daily fluoride intake (TDFI). TDFI was associated with F− in nails and hair, as well as the exposure through drinking water. In conclusion, recent biomarkers are adequate for monitoring the systemic fluoride levels by evaluating the chronic/subchronic exposure through different sources, mainly drinking water, considering nails better than hair for this purpose.

THE EFFECT OF VIBRO-MASSAGE ON THE LEVEL OF SELECTED MARKER OF MUSCLE DAMAGEAND CONNECTIVE TISSUES AFTER LONG-TERM PHYSICAL EXERCISE IN MALES

2018 ◽  
Vol 28 (82) ◽  
pp. 21-27
Author(s):  
Anna Tyka ◽  
Tomasz Pałka ◽  
Anna Piotrowska ◽  
Danuta Żiżka ◽  
Wanda Pilch ◽  
...  
Keyword(s):  
Physical Exercise ◽  
Body Height ◽  
Lactate Concentration ◽  
The Body ◽  
Physical Stimulus ◽  
Connective Tissues ◽  
Post Exercise ◽  
Blood Samples ◽  
High Level

Study aim. The aim of the study was to examine the influence of using of vibro-massage on specific parameters of frequency, amplitude and pulsation sequence after prolonged physical exercise on post-workout restitution among men, based on the assessment of biochemical concentrations of indicators assessing the degree of damage to muscle cells. Material and methods. A group of 20 men aged 22±2.5 years was selected for the study, with average values of: body height (BH) - 179±1.00 cm, body mass (BM) - 74.3±1.70 kg, percentage of fat content (PF) - 10.8±0.60%, and with a fairly high level of VO2max 52.6±8.0 ml.kg-1.min-1. Results. In two groups - with the use of vibration procedures (VG) and placebo (PG), statistically significant differences were found for lactate concentration (LA) in blood samples (serum) collected after 15, 30 and 60 minutes, as well as MMP-2, Mb and IL-6 1h later and 24 hours following the exercise. Conclusions. It has been shown that a single, strong physical stimulus causes large disturbances of homeostasis in the body, while the use of vibro-massage with the indicated parameters, during rest, results in an increase in the rate of the body’s restitution during the post-exercise phase.

scholarly journals Biological effects of oxygen-enriched drinking water. Review. Part 1

2020 ◽  
Vol 99 (11) ◽  
pp. 1211-1216
Author(s):  
Jurii A. Rakhmanin ◽  
Natalija A. Egorova ◽  
Rufina I. Mihaylova ◽  
Irina N. Ryzhova ◽  
Marina G. Kochetkova
Keyword(s):  
Drinking Water ◽  
Biological Effect ◽  
Biological Effects ◽  
Human Life ◽  
Experimental Studies ◽  
The Body ◽  
Molecular Response ◽  
Oxygen Homeostasis ◽  
Generalized Peritonitis ◽  
Negative Effect

Human life on Earth depends on the continuous availability of oxygen, but conditions for the entry of oxygen into the cells of the body change in time and space, easily broken, owing to what may develop hypoxia - a condition of oxygen starvation of tissues. The first part of the review provides information on the maintenance of oxygen homeostasis in cells, on the key component responsible for the regulation of the molecular response to hypoxia - the HIFs family of transcription factors (Hypoxia-Inducible Factors). It is indicated that it is possible to compensate for the lack of oxygen in the body by delivering it to cells and tissues with water and various oxygen cocktails. Data from experimental studies of the biological effect of oxygenated drinking water, as well as the results of studying the effects of oxygen-enriched drinking water with the participation of volunteers are presented. The issue of the formation of oxygen (free) radicals when drinking oxygen-enriched drinking water is considered. The second part of the review will provide data on the successful use of oxygen-rich water in domestic therapeutic and surgical practice in complex treatment in order to reduce the negative effect of hypoxia in patients with chronic heart failure and generalized peritonitis complicated by intestinal insufficiency syndrome; on the method of improving the supply of oxygen to the body using enteral oxygen therapy - oxygen cocktails - for diseases of the heart, lungs, bronchi and gastrointestinal tract, atopic dermatitis, placental insufficiency, as well as to improve physical and mental performance. The review draws specialist’s attention to the problem of the biological effect of oxygen-enriched drinking water, its insufficient knowledge and the possible yet unrealized potential in terms of preventing various diseases and maintaining optimal human health.

scholarly journals Social aspects role and the behavior of drinking water among students in a private university

2020 ◽  
Vol 9 (2) ◽  
pp. 374
Author(s):  
Sitti Nur Djannah ◽  
Ratu Matahari
Keyword(s):  
Drinking Water ◽  
Gastrointestinal Disease ◽  
Financial Burden ◽  
Private University ◽  
The Body ◽  
Long Term Effects ◽  
Urinary Infections ◽  
Urine Color ◽  
Tract Infections

Lack of consuming drink water can cause many effects on the body. The long term effects of less consuming water dangerous for health. The diseases related to the less consuming water are respiratory tract infections, gastrointestinal disease, urinary infections, cancer, diabetic, kidney disease, and also others metabolic disorders. Those diseases affected to the financial burden due to this situation. It happens because of some factors, many studies mentioned about the behavior of drinking water among adolescents in school affected by some sociodemographic and behavioral factors. This study shows that most of respondents have a bad habit to keep their health kidney it is evident that the majority of respondents have urine color that tends to concentrated which is categorized as unhealthy urine. The limitation of the study was not measure the amount of drink water consuming for each respondents per day.

Defining the Competence of Psychologists with a View to Public Accountability *

1997 ◽  
Vol 2 (4) ◽  
pp. 293-300 ◽  
Author(s):  
Ype H. Poortinga ◽  
Ingrid Lunt
Keyword(s):  
Scientific Knowledge ◽  
Professional Training ◽  
Professional Competence ◽  
Codes Of Ethics ◽  
The Body ◽  
The European Union ◽  
Rigorous Evaluation ◽  
Judicial Proceedings ◽  
Psychological Knowledge

In national codes of ethics the practice of psychology is presented as rooted in scientific knowledge, professional skills, and experience. However, it is not self-evident that the body of scientific knowledge in psychology provides an adequate basis for current professional practice. Professional training and experience are seen as necessary for the application of psychological knowledge, but they appear insufficient to defend the soundness of one's practices when challenged in judicial proceedings of a kind that may be faced by psychologists in the European Union in the not too distant future. In seeking to define the basis for the professional competence of psychologists, this article recommends taking a position of modesty concerning the scope and effectiveness of psychological interventions. In many circumstances, psychologists can only provide partial advice, narrowing down the range of possible courses of action more by eliminating unpromising ones than by pointing out the most correct or most favorable one. By emphasizing rigorous evaluation, the profession should gain in accountability and, in the long term, in respectability.

Iron Metabolism in the Human Body and Setting its Hygienic Limits for Drinking Water. Review. Part 2

2020 ◽  
Vol 99 (5) ◽  
pp. 504-508
Author(s):  
Natalija A. Egorova ◽  
N. V. Kanatnikova
Keyword(s):  
Oxidative Stress ◽  
Drinking Water ◽  
Iron Overload ◽  
Iron Metabolism ◽  
Subcutaneous Tissue ◽  
Allergic Diseases ◽  
The Body ◽  
Urogenital System ◽  
High Iron Content ◽  
Labile Iron Pool

Iron is an assential element for the growth, division, differentiation and functioning of any cell in the body. Iron is virtually important for human and danger at the same time, because with excessive accumulation it causes oxidative stress with formation of highly active oxygen radicals and reactive form of nitrogen that can destroy cell membranes, proteins, nucleic acids, reduce cell viability, with, according to modern concepts, can contribute to the development of many diseases (cardiovascular, rheumatic, gastrointestinal, neurodegenerative, oncological, metabolic and others), and also accelerate the aging process. Part 1 of this review discussed the issues of iron metabolism in human, including its regulation at the cellular and systemic levels, the intake, transport, use, accumulation and export of iron in cells, the role of the labile iron pool in the cytoplasm of cells and plasma non-transferrin bound iron. Data are provided on the causes, frequency and significance of iron overload in the formation of free radicals and the development of oxidative stress. Part 2 of the review provides information on diseases associated with iron overload as well as information on ferroptosis - a new type of iron-dependent regulated cell death. Attention is paid to the works of domestic authors, where it was found that prolonged use of drinking water with a high iron content is unfavorable for the population and leads to an increase in the overall incidence, the development of the diseases of the blood, skin and subcutaneous tissue, musculoskeletal system, digestive system, urogenital system, and allergic diseases. Separate publications are cited on the possibility of a negative effect of iron at concentrations in water of 0.3 mg/l and lower. The material of the review emphasizes the preventive significance of caution attitude to regulating iron in the water in the Russian Federation, where 1/3 of the population uses iron-containing water for drinking, and substantiate the feasibility of establishing a hygienic limit for iron in water not higher than 0.3 mg/l.

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