Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 14 de 14
Filter
Add more filters










Publication year range
1.
BMC Nurs ; 23(1): 460, 2024 Jul 08.
Article in English | MEDLINE | ID: mdl-38978041

ABSTRACT

BACKGROUND: A rapid increase has been observed in aesthetic surgery procedures in recent years and it has been determined that females have more aesthetic procedures. While different groups of female groups were taken as a sample in the studies, no study on female nurses was found. In this study, it is thought that psychological reasons such as stress, anxiety, desire to be liked and lack of self-confidence that lead women to plastic surgery will reduce the professional performance of nurses and this situation will create additional workload for other colleagues. Therefore, the aim of the study is to reveal the effect of desire to be liked and social appearance anxiety on the acceptance of female nurses to plastic surgery. METHODS: The population of the cross-sectional study consisted of 243.565 nurses working in public, private and university hospitals in Turkey. A questionnaire form was used as a data collection tool in the study. In the first part of the form, there are statements aiming to reveal the socio-demographic characteristics, social media usage levels and aesthetic surgery experiences of nurses, and in the second part, there is a desire to be liked scale, social appearance anxiety scale and aesthetic surgery acceptance scale. The 1004 questionnaire forms collected as a result of the study were subjected to percentage, frequency, correlation and regression analysis. RESULTS: 41.2% of the nurses have had aesthetic procedures before and 68.4% of them want to have aesthetic procedures when there is an area they do not like in their body. A strong positive relationship was found between the desire to be liked, social appearance anxiety, and aesthetic surgery acceptance (r > 0.500, p < 0.01). Aesthetic surgery acceptance is affected by the desire to be liked and by social appearance anxiety. CONCLUSION: In the study, it was determined that social appearance anxiety and the desire to be liked led female nurses to plastic surgery. According to the results of similar studies conducted in different groups, it may be recommended that awareness training be organized both in schools and through digital media about the consequences of unnecessary plastic surgery.

2.
Cent Eur J Public Health ; 30(3): 154-159, 2022 Sep.
Article in English | MEDLINE | ID: mdl-36239362

ABSTRACT

OBJECTIVE: The aim of this study was to reveal pregnant women's beliefs about third-hand smoke and their exposure to tobacco smoke. METHODS: The population of this cross-sectional study consisted of patients attending the obstetrics and gynaecology outpatient clinic of the hospital in Samsun, a province of Turkey on the Black Sea coast (annual average 4,000 pregnant women). The minimum sample size of the study was determined as 350 at a confidence interval of 95%, prevalence of 50% and margin of error 0.05. The study data were collected with the personal information form used to determine the personal characteristics of the participants, and the Beliefs about Third-Hand Smoke (BATHS-T) scale. The data were analysed in the SPSS 25.0 program using the descriptive statistics and multiple regression analysis. RESULTS: The mean age of the participating pregnant women was 26.84 ± 4.372 years. Of them, 48.4% were high school graduates and 86% did not work. Their mean gestational age was 29.85 ± 9.238 weeks, and 69.8% of them were in the third trimester. Of them, 9.8% were smokers, and the average number of cigarettes they smoked per day was 6.97 ± 4.931. The mean score they obtained from the BATHS-T scale was 3.79 ± 0.859. There was a significant relationship between the mean score obtained from the BATHS-T scale and the variables such as education and smoking status. As the level of education increased, exposure to third-hand smoke decreased (p < 0.05). The mean score the smoking pregnant women obtained from the BATHS-T scale was lower than that of the non-smoking pregnant women. CONCLUSION: High level of education decreases exposure to third-hand smoke. Belief in third-hand smoke is an important factor affecting pregnant women's smoking habit.


Subject(s)
Pregnancy Complications , Tobacco Products , Tobacco Smoke Pollution , Adult , Cross-Sectional Studies , Female , Humans , Infant , Pregnancy , Pregnancy Complications/epidemiology , Pregnant Women , Tobacco Smoke Pollution/analysis , Young Adult
3.
Psychogeriatrics ; 22(2): 202-209, 2022 Mar.
Article in English | MEDLINE | ID: mdl-34963192

ABSTRACT

BACKGROUND: The COVID-19 pandemic has adversely affected the physical and mental health of individuals. The elderly are a special group that is affected by this condition. The aim of this study was to investigate the effect of the COVID-19 pandemic on older adults in terms of disability, state-trait anxiety and life satisfaction. METHODS: The population of this cross-sectional study consisted of individuals aged 65 and over who presented to a family health centre in Samsun a province of Turkey on the Black Sea coast (N = 3950). The study data were collected with the following five forms: Personal Information Form, Quality of Life Questionnaire, State-Trait Anxiety Inventory, Brief Disability Questionnaire and Life Satisfaction Scale. In the analysis of the study data, descriptive statistics, Student's t-test, paired t-test, analysis of variance, Pearson correlation and multiple regression analysis were used. RESULTS: The mean age of the participants was 70.88 ± 4.818 years. There was a significant difference between the participants' pre- and post-pandemic health status and quality of life levels. In the study, a significant relationship was determined between the scores obtained from the State-Trait Anxiety Inventory, and the Brief Disability Questionnaire and between the scores obtained from the State-Trait Anxiety Inventory and the variables such as income and marital status (P < 0.05). CONCLUSION: A significant result of the study is that the older adults' perceptions of health status and quality of life were adversely affected by the pandemic. Another significant result is that disability increased the level of anxiety. The other significant result of the study is that socioeconomic status was an important determinant of anxiety.


Subject(s)
COVID-19 , Pandemics , Aged , Anxiety/epidemiology , COVID-19/epidemiology , Cross-Sectional Studies , Humans , Quality of Life , SARS-CoV-2 , Turkey/epidemiology
4.
Regul Toxicol Pharmacol ; 104: 56-58, 2019 Jun.
Article in English | MEDLINE | ID: mdl-30853485

ABSTRACT

Chemicals used in cosmetics must interact with the enzymes for their consumption after entering our bodies. The area at which the interaction realizes on the enzyme is known as the active center. This center is three dimensional and optically active. Considering the properties of the active regions, it is believed that the determination of the geometric properties of the chemicals may contribute to the safety evaluation of the chemical products. Obtainment of toxicological data of chemicals is a long and difficult process. It is an impossible process as the animal experiments have been prohibited. Since there are large number of chemical compounds available, it is not possible to conduct toxicological evaluation on all of them. Therefore, it is important to estimate whether chemicals are toxic through using molecular formulas. In this study, the similarities and differences between the unwanted chemicals used in cosmetic products and the geometric structures of the chemicals used in metabolism were determined by using Group Theory. The aim of the study is to estimate whether the chemicals will be toxic by taking advantage of point-group determinations. Molecular formulae of chemicals prohibited in cosmetics and substrates used in biological systems were used as materials. The point groups of the molecules were determined using these formulas. ChemDraw Professional 17 chemical drawing program was used to draw the formula structures of the molecules. Campus Licensed version of the program provided by Atatürk University was utilized. An Excel application which was developed to examine the molecules according to the Group Theory was also used.


Subject(s)
Consumer Product Safety , Cosmetics/analysis , Cosmetics/adverse effects , Cosmetics/metabolism , Humans , Risk Assessment , Substrate Specificity
5.
Int J Pharm ; 499(1-2): 295-300, 2016 Feb 29.
Article in English | MEDLINE | ID: mdl-26773597

ABSTRACT

Chemicals used in cosmetics have to interact with enzymes for beneficial or destroy purpose after they enter in our body. Active sections of enzymes that catalyze reactions have three dimensions and they are active optically. When these limitations of catalytic sections are considered, it may be considered that defining geometric specifications of chemical materials and functional groups they contain may contribute on safety evaluations of cosmetic products. In this study, defining similarities and differences of geometric structures of chemicals that are prohibited to be used in cosmetic products and chemical that are allowed to be used by using group theory and analyze of functional groups that are often encountered in these chemicals are aimed. Molecule formulas related to chemical material of, 276 pieces chemicals that are prohibited to be used in cosmetic products and 65 pieces chemicals that are allowed, are used as the material. Two and three-dimension structures of these formulas are drawn and types and quantity of functional groups they contain are defined. And as a method, freeware (Free Trial) version of "Chem-BioOffice Ultra 13.0 Suite" chemical drawing program to draw two and three-dimension of formulas, "Campus-Licensed" version that are provided for use by our university of "Autodesk 3DS Max" for three-dimension drawings are used. In order to analyze geometric specifications of drawn molecules according to Group Theory and define type and quantity of available functional groups, Excel applications developed by Prof. Dr. Yasar Demir are used.


Subject(s)
Consumer Product Safety , Cosmetics/chemistry , Enzymes/metabolism , Models, Molecular , Cosmetics/toxicity , Humans , Quantitative Structure-Activity Relationship
6.
Drug Metab Lett ; 8(1): 67-75, 2014.
Article in English | MEDLINE | ID: mdl-24826966

ABSTRACT

In this study, serum samples from 50 patients with the diagnosis of Behcet's disease and 20 healthy volunteers were analyzed. The study consists of three parts. In the first part, paraoxonase (PON) activities were determined in the serum samples of 50 patients with Behcet's disease and 20 healthy people. In the second part, equal volumes of serum samples from 50 patients were pooled and PON enzymes were purified by using Sepharose-4B-L-tyrosine tyrosine-1-naphtylamine affinity column. Optimum temperature, optimum pH, Vmax and Km values of the pure enzymes were determined. The same purification procedure was also performed in the serum samples of 20 healthy people. Electrophoretic mobility was observed (via SDS-PAGE) in the PON enzymes that were purified from the serum samples of patients with Behcet's disease and healthy people. In the third part, in vitro effects of drugs containing azathioprine, methylprednisolone and colchicine that have already been used for the treatment of Behcet's disease were tested on the PON enzymes of the patients with Behcet's disease and control group. IC50 values and Ki constant values were measured and inhibition types were determined for the drugs containing azathioprine, methylprednisolone and colchicine that have already been used for the treatment of the Behcet's disease and demonstrate in vitro inhibition effects.


Subject(s)
Aryldialkylphosphatase/antagonists & inhibitors , Aryldialkylphosphatase/blood , Azathioprine/therapeutic use , Behcet Syndrome/drug therapy , Colchicine/therapeutic use , Enzyme Inhibitors/therapeutic use , Methylprednisolone/therapeutic use , Behcet Syndrome/blood , Behcet Syndrome/enzymology , Case-Control Studies , Humans , Kinetics
7.
Indian J Biochem Biophys ; 44(4): 252-6, 2007 Aug.
Article in English | MEDLINE | ID: mdl-17970284

ABSTRACT

Four isoenzymes of carbonic anhydrase (CA) were purified from Elephas Irogontherii (steppe elephant) bone (approx 0.3-0.5 million years old) from different locations (outer peripheral, cytosolic, inner peripheral and integral) using Sepharose 4B-L-tyrosine sulphanilamide affinity chromatography and their kinetics properties were investigated and compared with known CA isoenzymes. The purification degree of CAs was monitored by SDS-PAGE. Purification fold for outer peripheral, inner peripheral, cytosolic and integral CA was 395.6, 652.8, 1091 and 429.3 and the molecular mass (as determined by gel filtration chromatography) was 37, 36, 35, and 39 kDa, respectively. The optimal temperature for isozymes was 10-20, 30, 30 and 60 degrees C and optimal pH- was between 7.5-11, 7.5-10, 7.5-10 and 7.5 respectively. K(m) values (at optimum pH and 20 degrees C) for p-nitrophenyl acetate as substrate were 4.83, 6.80, 4.525 and 3.86 mM and the Vmax values for the same substrate were 0.00097, 0.0149, 0.00249 and 0.00072 micromol/L*min, respectively. I50 values of isoenzymes for the inhibitors of CA - sulphanilamide, KSCN, acetazolamide and NaN3 were also determined.


Subject(s)
Bone and Bones/enzymology , Carbonic Anhydrases/metabolism , Acetazolamide/pharmacology , Animals , Carbonic Anhydrases/isolation & purification , Elephants , Hydrogen-Ion Concentration , Isoenzymes/antagonists & inhibitors , Isoenzymes/isolation & purification , Isoenzymes/metabolism , Sodium Azide/pharmacology , Sulfanilamide , Sulfanilamides/pharmacology , Thiocyanates/pharmacology
8.
J Biochem Mol Biol ; 39(5): 516-21, 2006 Sep 30.
Article in English | MEDLINE | ID: mdl-17002871

ABSTRACT

Modifications in dietary fatty acid intake might lead to a modification in membrane phospholipid fatty acid composition. The purpose of this study was to investigate relationship between different type of oil consumption and leukocyte membrane phospholipid composition. This study was carried out in subjects utilizing butter (n = 15), margarine (n = 15), fluid oil (n = 15) and mixed types of oils (n = 15) in total 60 subjects. Leukocytes were separated from total blood by dextran sedimentation method. Membrane lipids and proteins were isolated following the cell disruption. Fatty acids of membrane phospholipids were isolated by hydrolysation with phospholipase B under ultrasonic dismembranator. Free fatty acids were identified with gas chromatography at chloroform phase. The results obtained were compared with data obtained by chromatograms of the standards. Results more prominent values of arachidic, dihomo-gamma-linolenic and palmitoleic acids were found in butter-or mixed oil-user groups; eicosadienoic, eicosamonoenoic, dihomo-gamma-linolenic and behenic acids in fluid oil heptanoic, valeric, eicosadienoic and linolenic acids in margarine groups. The fatty acid composition of mixed oil; was similar to butter, while other two oils were so different. From this study, it was concluded that the type of oil consumption might have an influence on phospholipid components of plasma membranes.


Subject(s)
Dietary Fats/administration & dosage , Fatty Acids, Unsaturated/analysis , Fatty Acids/analysis , Leukocytes/chemistry , Membrane Lipids/chemistry , Oils/administration & dosage , Phospholipids/chemistry , Adult , Butter , Cell Membrane/chemistry , Cell Separation , Chromatography, Gas , Humans , Leukocytes/ultrastructure , Male , Margarine
9.
Prep Biochem Biotechnol ; 35(4): 291-9, 2005.
Article in English | MEDLINE | ID: mdl-16239194

ABSTRACT

In this research, protease enzyme was purified and characterized from milk of Euphorbia amygdaloides. (NH4)2SO4 fractionation and CM-cellulose ion exchange chromatography methods were used for purification of the enzyme. The optimum pH value was determined to be 5, and the optimum temperature was determined to be 60 degrees C. The V(max) and K(M) values at optimum pH and 25 degrees C were calculated by means of Linewearver-Burk graphs as 0.27 mg/L min(-1) and 16 mM, respectively. The purification degree was controlled by using SDS-PAGE and molecular weight was found to be 26 kD. The molecular weight of the enzyme was determined as 54 kD by gel filtration chromatography. These results show that the enzyme has two subunits. In the study, it was also researched whether purified and characterized protease can be collapsed to milk. It was determined that protease enzyme can collapse milk and it can be used to produce cheese.


Subject(s)
Cheese , Euphorbia/enzymology , Latex/chemistry , Peptide Hydrolases/isolation & purification , Caseins/metabolism , Catalysis , Electrophoresis, Polyacrylamide Gel , Hydrogen-Ion Concentration , Kinetics , Molecular Weight , Peptide Hydrolases/chemistry , Peptide Hydrolases/metabolism , Temperature
10.
J Enzyme Inhib Med Chem ; 20(1): 75-80, 2005 Feb.
Article in English | MEDLINE | ID: mdl-15895688

ABSTRACT

Carbonic anhydrase (CA) was purified from four different cell localisation (outer peripheral, cytosolic, inner peripheral and integral) in bovine stomach using affinity chromatography with Sepharose-4B-L-tyrosine sulphanilamide. During the purification steps, the activity of the enzyme was measured using p-nitrophenyl acetate at pH 7.4. Optimum pH and optimum temperature values for all CA samples were determined, and their K(m) and V(max) values for the same substrate by Lineweaver-Burk graphics. The extent of purification for all CA localizations was controlled by SDS-PAGE. The K(m) values at optimum pH and 20 degrees C were 0.625 mM, 0.541 mM, 0.785 mM and 0.862 mM with p-nitro phenyl acetate, for all CA localizations. The respective V(max) values at optimum pH and 20 degrees C were 0.875 micromol/L min, 0.186 micromol/L min, 0.214 micromol/L min and 0.253 micromol/L min with the same substrate. The K(i) and I50 values for the inhibitors sulphanilamide, KSCN, NaN3 and acetazolamide were determined for all the CA localizations.


Subject(s)
Carbonic Anhydrase Inhibitors/pharmacology , Carbonic Anhydrases/metabolism , Stomach/enzymology , Acetazolamide/pharmacology , Amides/pharmacology , Animals , Carbonic Anhydrases/isolation & purification , Cattle , Chromatography, Affinity , Cytosol/enzymology , Electrophoresis, Polyacrylamide Gel , Kinetics , Nitrophenols/metabolism , Sodium Azide/pharmacology , Thiocyanates/pharmacology , Zinc/metabolism
11.
Indian J Biochem Biophys ; 42(3): 182-5, 2005 Jun.
Article in English | MEDLINE | ID: mdl-23923562

ABSTRACT

Four isozymes of alkaline phosphatase (AP) were purified from Elephas trogontherii (Steppe elephant) from different locations in the bone (outer and inner peripheral, cytosolic, and integral) using Sephadex G-200 gel filtration and TEAE-cellulose anion-exchange chromatography. The specimen was obtained from Erzurum Museum and its age was approx. 0.3-0.5 million years old. No fungi or bacteria were present in the bone sample. The enzyme activity was determined by using p-nitrophenylphosphate as a substrate. SDS-PAGE of all the isozymes gave a single band at the same location. The molecular mass of the four isozymes as determined by using gel filtration was about 60 kDa. Optimum pHs for the four isozymes were between 8-8.5. The optimum temperatures of the isozymes were: outer peripheral, 37.5 degrees C, cytosolic, 37.5 degrees C, inner peripheral, 35 degrees C and integral, 40 degrees C. The values of V(max) and K(m), as well different optimum temperatures indicated that isozymes were structurally different.


Subject(s)
Alkaline Phosphatase/isolation & purification , Alkaline Phosphatase/metabolism , Bone and Bones/enzymology , Cytosol/enzymology , Elephants/metabolism , Alkaline Phosphatase/classification , Animals , Anion Exchange Resins/chemistry , Chromatography, Gel , Electrophoresis, Polyacrylamide Gel , Hydrogen-Ion Concentration , Isoenzymes , Kinetics , Molecular Weight , Nitrophenols/metabolism , Organophosphorus Compounds/metabolism , Substrate Specificity , Temperature
12.
Phytochem Anal ; 15(6): 382-4, 2004.
Article in English | MEDLINE | ID: mdl-15595453

ABSTRACT

A new enzymatic method has been developed to determine trace amounts of Zn2+ in vegetables. The basis of the method is that apocarbonic anhydrase regains its activity in proportion to the concentration of Zn2+ present in solution. Bovine carbonic anhydrase was purified from erythrocyte haemolysate by affinity chromatography and the bound Zn2+ removed by dialysis of purified enzyme against a solution of pyridine-2, 6-dicarboxylic acid. Pure (100%) apoenzyme was obtained. The concentration of Zn2+ in vegetable samples was determined using the enzymatic method and by atomic absorption spectroscopy. Determinations made using the two methods were not significantly different one from another.


Subject(s)
Carbonic Anhydrases , Vegetables/chemistry , Zinc/analysis , Apoenzymes
13.
Biol Pharm Bull ; 27(11): 1730-4, 2004 Nov.
Article in English | MEDLINE | ID: mdl-15516714

ABSTRACT

In this study, the effects of omeprazole, famotidine, and ranitidine on bovine stomach carbonic anhydrase (EC 4.2.1.1.) isoenzymes have been investigated in vitro. Bovine stomach carbonic anhydrase (CA) was purified from four different cell localisations of bovine stomach using affinity chromatography by Sepharose 4B-L-tyrosine sulphanilamide. The inhibition or activation effects of three different medical drugs on CA isoenzymes were determined using esterase activity and the CO(2)-hydratase method by plotting activity % vs. [medical drug]. The K(i) values for omeprazole, famotidine, and ranitidine were determined in all localization CA, respectively. The I(50) values of the drugs exhibiting an inhibition effect were found by means of these graphs. It was observed that omeprazole, famotidine, and ranitidine showed inhibition of bovine stomach CA activity. In addition, in vivo studies were performed for these medical drugs in Sprague-Dawley rats. It was demonstrated that CA in erythrocytes was significantly inhibited by these drugs to 3 h.


Subject(s)
Carbonic Anhydrase Inhibitors/pharmacology , Carbonic Anhydrases/blood , Carbonic Anhydrases/isolation & purification , Erythrocytes/drug effects , Stomach/chemistry , Animals , Carbonic Anhydrase Inhibitors/chemistry , Carbonic Anhydrases/chemistry , Cattle , Erythrocytes/enzymology , Esterases/metabolism , Famotidine/chemistry , Famotidine/pharmacology , In Vitro Techniques , Omeprazole/chemistry , Omeprazole/pharmacology , Ranitidine/chemistry , Ranitidine/pharmacology , Rats , Rats, Sprague-Dawley
14.
Prep Biochem Biotechnol ; 33(4): 311-20, 2003 Nov.
Article in English | MEDLINE | ID: mdl-14606688

ABSTRACT

In this research, acid phosphatase was purified and characterized from approximately 3000-year-old human bones from archeological excavations. Using anion exchange chromatography, two isoenzymes, TrACP and TsACP, were isolated from the bone. TrACP and TsACP were eluted separately, with a concentration gradient, from a CM-sepharose column. The resulting TrACP was further purified on a cellulose phosphate column. The activity was determined by using pNPP as substrate. Additionally, protein was determined by the Bradford and Coomassie Brilliant Blue method. The optimum pHs of TsACP and TrACP were 6 and 5, respectively. The optimum temperatures were 0 and 10 degrees C, respectively. Molecular weights were measured by gel filtration chromatography. The isoenzyme purity was checked with SDS-PAGE. Finally, the effects of sodium molybdate and tartrate on isoenzyme activity were determined.


Subject(s)
Acid Phosphatase/isolation & purification , Bone and Bones/enzymology , Acid Phosphatase/chemistry , Acid Phosphatase/history , Chromatography, Gel , Electrophoresis, Polyacrylamide Gel , Enzyme Activation , History, Ancient , Humans , Hydrogen-Ion Concentration , Isoenzymes/chemistry , Isoenzymes/isolation & purification , Molecular Weight , Tartrate-Resistant Acid Phosphatase , Temperature
SELECTION OF CITATIONS
SEARCH DETAIL
...