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1.
Anal Chim Acta ; 1324: 343092, 2024 Oct 02.
Article in English | MEDLINE | ID: mdl-39218574

ABSTRACT

BACKGROUND: Gas Chromatography Isotope Ratio Mass Spectrometry (GC-C-IRMS) has long been used in routine laboratories to determine the δ13C values of anabolic steroids in urine, differentiating between, e.g., endogenous and synthetic testosterone (T) in sports doping control. Until now, liquid chromatography (LC-IRMS) has not been used. The LC-IRMS setup doesn't allow organic solvents or modifiers in the mobile phase for δ13C determinations. Mid-to non-polar analytes such as steroids can be analysed in water heated to High Temperatures (HT, up to 200 °C) because at 200 °C has a similar polarity as 80/20 methanol/water at ambient temperature. In this work, we developed a method for steroids in urine, extending the application of the LC-IRMS to non-polar analytes in complex matrices. RESULT: An HT-LC-IRMS method capable of determining the δ13C values of four steroids (i.e., testosterone (T), 5α-androstane-3α,17ß-diol (ααß), 5ß-androstane-3α,17ß-diol (ßαß) and pregnanetriol (PT)) in urine was developed and validated. Accuracy ranged from 0.23 ‰ (ααß and ßαß) to 0.49 ‰ (T), and the detection limit was set at 10 ng mL-1 (T, ααß+ßαß). The validation data and a comparison of authentic urine samples analysed with HT-LC-IRMS and GC-C-IRMS indicated a comparable performance between HT-LC-IRMS and GC-C-IRMS. SIGNIFICANCE: HT-LC-IRMS can be used to determine δ13C values of anabolic steroids, extending the applicability of both HT-LC and LC-IRMS to non-polar substances determined in a complex matrix in routine laboratory practice.


Subject(s)
Carbon Isotopes , Carbon Isotopes/chemistry , Humans , Chromatography, Liquid/methods , Mass Spectrometry/methods , Hot Temperature , Doping in Sports , Anabolic Agents/urine , Steroids/urine , Testosterone Congeners/urine , Gas Chromatography-Mass Spectrometry/methods , Anabolic Androgenic Steroids
6.
Steroids ; 209: 109465, 2024 Sep.
Article in English | MEDLINE | ID: mdl-38945388

ABSTRACT

Anabolic-androgenic steroids (AAS) are used widely, but in illegal ways mostly by young men as performance-enhancing and image-enhancing drugs (IPED). long-term usage of AAS, usually in conjunction with other illegal substances, can have extremely detrimental impacts on the reproductive system. The primary goal of this study was to examine any possible detrimental effects of AAS on sex hormone levels, a liver and kidney function in individuals who frequent fitness centers in Iraq-Baghdad. In this research, there are 60 participants (20-37 years old); 30 athletes who visited the different gyms in Baghdad/ Iraq and used AAS such as testosterone, Boldenone, Cybontae, Deca Durabellin; and 30 athletes who did not take any synthetics hormones and serve as control. All participants answered the questionnaire form which included their age, the type of used AAS, when they started to take it, and the total usage number per week. The blood (5 ml) was drawn from every participant to separate the serum. The serum was used to measure some hormones (Testosterone, FSH, LH, prolactin and Estrodiol) and liver and kidney function parameters. The results showed a significantly lower level of testosterone and FSH in the AAS-users' bodybuilding group compared to the control group. In comparison with the control group, there was a notable rise in the PRL level in the serum of AA users. However, when comparing the serum levels of LH and Estrodiol in the AAS-user group to those in the control group, no discernible variations were seen. AAS users had a significantly higher level of ALT and lower ALP than controls, although there is no difference in AST levels between the two groups. The creatine level was significantly higher in the AAS-user compared to the control group, but not urea. In conclusion, the effects of AAS and other supplements on sex hormones and kidney, liver function, and vary depending on how long they are used, with the effects of AAS being more pronounced. Therefore, there is a need for culturally sensitive measures to prevent steroid abuse among youth.


Subject(s)
Anabolic Agents , Humans , Male , Adult , Young Adult , Anabolic Agents/adverse effects , Iraq , Testosterone/blood , Weight Lifting , Athletes , Liver/drug effects , Liver/metabolism , Kidney/drug effects , Kidney/metabolism , Steroids/adverse effects , Testosterone Congeners/adverse effects , Testosterone Congeners/blood , Anabolic Androgenic Steroids
7.
Subst Use Misuse ; 59(10): 1488-1494, 2024.
Article in English | MEDLINE | ID: mdl-38812099

ABSTRACT

BACKGROUND: Anabolic androgenic steroids (AAS) are traditionally used for the treatment/control of various diseases; however, they are being used for non-therapeutic and indiscriminate purposes to enhance sports performance and physical appearance. This study aimed to assess the prevalence and associated factors of AAS use among professional CrossFit® competitors. METHODS: We conducted an observational cross-sectional survey in which an anonymous questionnaire was applied to professional CrossFit® athletes. RESULTS: The prevalence of AAS usage was 33.3%. Most users were male (74.2%), aged between 30 and 39 years (51.6%), with completed higher education (83.9%), and had been training for more than 5 years (77.4%); the primary motivation for AAS use was performance enhancement (77.4%). Individuals who were older (p < 0.05) and more experienced in competitions (p < 0.01) are more likely to use AAS. Testosterone was the most employed AAS (71.0%); CrossFit® athletes typically used an average of 2 different AAS. The majority of users had notably sought advice from a physician (74.2%), and AAS were acquired from either drugstores (80.6%) or through illicit channels (29.0%). Moreover, 61.3% of AAS users reported experiencing adverse effects. CONCLUSIONS: Our results demonstrated a higher prevalence of AAS users among professional competitors in CrossFit® compared to the general population; older age and greater experience in official competitions were decisive factors for a greater inclination toward AAS use. A significant percentage of athletes seek drugs through illegal channels. Despite the majority of users experiencing adverse effects, athletes report satisfaction with use, believing that the benefits still outweigh the drawbacks.


Subject(s)
Anabolic Agents , Athletes , Doping in Sports , Motivation , Humans , Male , Adult , Female , Cross-Sectional Studies , Athletes/psychology , Athletes/statistics & numerical data , Anabolic Agents/adverse effects , Doping in Sports/psychology , Doping in Sports/statistics & numerical data , Young Adult , Testosterone Congeners/adverse effects , Middle Aged , Surveys and Questionnaires , Prevalence , Anabolic Androgenic Steroids
8.
BMJ Open ; 14(5): e078558, 2024 May 07.
Article in English | MEDLINE | ID: mdl-38719280

ABSTRACT

INTRODUCTION: The use of androgenic anabolic steroids (AASs) among recreational athletes is steadily increasing. However, knowledge regarding the potentially harmful effects of AAS primarily originates from case reports and small observational studies. This large-scale study aims to investigate the impact of AAS use on vascular plaque formation, preclinical coronary disease, cardiac function, circulating cardiovascular risk markers, quality of life (QoL) and mental health in a broad population of illicit AAS users. METHODS AND ANALYSES: A nationwide cross-sectional cohort study including a diverse population of men and women aged ≥18 years, with current or previous illicit AAS use for at least 3 months. Conducted at Odense University Hospital, Denmark, the study comprises two parts. In part A (the pilot study), 120 recreational athletes with an AAS history will be compared with a sex-matched and age-matched control population of 60 recreational athletes with no previous AAS use. Cardiovascular outcomes include examination of non-calcified coronary plaque volume and calcium score using coronary CT angiography, myocardial structure and function via echocardiography, and assessing carotid and femoral artery plaques using ultrasonography. Retinal microvascular status is evaluated through fundus photography. Cardiovascular risk markers are measured in blood. Mental health outcomes include health-related QoL, interpersonal difficulties, body image concerns, aggression dimensions, anxiety symptoms, depressive severity and cognitive function assessed through validated questionnaires. The findings of our comprehensive study will be used to compose a less intensive investigatory cohort study of cardiovascular and mental health (part B) involving a larger group of recreational athletes with a history of illicit AAS use. ETHICS AND DISSEMINATION: The study received approval from the Regional Committee on Health Research Ethics for Southern Denmark (S-20210078) and the Danish Data Protection Agency (21/28259). All participants will provide signed informed consent. Research outcomes will be disseminated through peer-reviewed journals and scientific conferences. TRIAL REGISTRATION NUMBER: NCT05178537.


Subject(s)
Athletes , Doping in Sports , Mental Health , Quality of Life , Adult , Female , Humans , Male , Anabolic Agents/adverse effects , Anabolic Androgenic Steroids , Androgens/adverse effects , Athletes/psychology , Cardiovascular Diseases/epidemiology , Cohort Studies , Cross-Sectional Studies , Denmark/epidemiology , Heart Disease Risk Factors , Pilot Projects , Research Design , Testosterone Congeners/adverse effects
9.
JAMA Netw Open ; 7(5): e2411088, 2024 May 01.
Article in English | MEDLINE | ID: mdl-38743422

ABSTRACT

Importance: Anabolic androgenic steroids (AAS) are disproportionately used by sexual minority men, with the physical and mental health implications of AAS use incompletely understood. Objective: To understand the reasons for use and health care needs of gay, bisexual, and queer cisgender men using AAS. Design, Setting, and Participants: This qualitative study was conducted from November 2021 to May 2023 using self-administered questionnaires and semistructured interviews that were transcribed and coded using reflexive thematic analysis. Participants were recruited through convenience and snowball sampling from lesbian, gay, bisexual, transgender, and queer clinical centers in New York, New York, as well as through online platforms. All patients self-identified as cisgender and gay, bisexual, or queer. Exposures: History of nonprescribed AAS use for a minimum of 8 consecutive weeks was required. Main Outcomes and Measures: The primary outcomes were reasons for and health implications of AAS use and interactions with health care practitioners, as determined through interviews. Interview transcripts were collected and analyzed. Results: Thematic saturation was reached after interviews with 12 male participants (mean [SD] age, 44 [11] years), with the majority of participants identifying as gay (10 participants [83%]), White non-Hispanic (9 participants [75%]), being in their 30s and 40s (9 participants [75%]), holding a bachelor's degree or higher (11 participants [92%]), and having used steroids for a mean (SD) of 7.5 (7.1) years. One participant (8%) self-identified as Black, and 2 (17%) identified as Hispanic. Seven men (58%) met the criteria for muscle dysmorphia on screening. Nine overarching themes were found, including internal and external motivators for initial use, continued use because of effectiveness or fear of losses, intensive personal research, physical and emotional harms experienced from use, using community-based harm reduction techniques, frustration with interactions with the medical community focused on AAS cessation, and concerns around the illegality of AAS. Conclusions and Relevance: In this qualitative study, AAS use among cisgender gay, bisexual, and queer men was found to be associated with multifactorial motivators, including a likely AAS use disorder and muscle dysmorphia. Despite all participants experiencing harms from use, men seeking medical help found insufficient support with practitioners insistent on AAS cessation and, thus, developed their own harm reduction techniques. Further research is needed to assess the utility of practitioner education efforts, the safety and efficacy of community-developed harm reduction methods, and the impact of AAS decriminalization on health care outcomes for this patient population.


Subject(s)
Qualitative Research , Sexual and Gender Minorities , Humans , Male , Adult , Sexual and Gender Minorities/psychology , Sexual and Gender Minorities/statistics & numerical data , Middle Aged , Anabolic Agents/adverse effects , Surveys and Questionnaires , Androgens/adverse effects , Substance-Related Disorders/psychology , Substance-Related Disorders/epidemiology , New York , Testosterone Congeners/adverse effects , Anabolic Androgenic Steroids
10.
Orthopadie (Heidelb) ; 53(8): 608-616, 2024 Aug.
Article in English | MEDLINE | ID: mdl-38653791

ABSTRACT

BACKGROUND: Systematic doping programs like in the GDR were applied in adolescent competitive athletes to induce supramaximal athletic performance. The substances had adverse somatic and psychological effects. The psychological development of the young athletes was impaired and they suffered in adulthood from long-term effects and secondary diseases even years after the doping period. METHOD: The study compared three groups: competitive athletes with doping (I), competitive athletes without doping (II) and persons with no sports activities (III). Somatic and psychological diseases were analyzed to identify the adverse effects of doping in the most vulnerable phase of development in adolescence. Participants were asked to supply a patient history and completed a questionnaire with standardized psychological tests. RESULTS: The doping cohort had a higher rate of somatic diseases, psychological disorders and social and professional difficulties. The differences were gender-specific with males more often having impaired liver function, depression, tumors and difficulties associated with the workplace . The doping group reported more emotional and physical neglect during childhood. They proved to be less optimistic but more pessimistic, to perceive less social support and to be more depressive. The study identified less extraversion and more neuroticism. Posttraumatic stress disorder (PTSD) occurred in a small number of participants in the doping group. Doping is associated with psychiatric variables. Predictors were the subscale identifying feelings of the Toronto alexithymia scale 20 (TAS-20), the sense of coherence and the Beck depression inventory 2 (BDI-II) and the Beck depression inventory (BDI). CONCLUSION: Physical and psychosocial effects imply correlation with the application of doping substances but might not only be due to the side effects of these substances but also caused by the system, which exerts great psychological pressure and stress during adolescence, a highly vulnerable phase.


Subject(s)
Adolescent Health , Anabolic Androgenic Steroids , Doping in Sports , Mental Disorders , Adolescent , Female , Humans , Male , Young Adult , Anabolic Androgenic Steroids/administration & dosage , Anabolic Androgenic Steroids/adverse effects , Doping in Sports/psychology , Germany/epidemiology , Mental Disorders/chemically induced , Mental Disorders/epidemiology , Mental Disorders/psychology , Mental Health , Testosterone Congeners/adverse effects
11.
Eur J Prev Cardiol ; 31(12): 1469-1476, 2024 Sep 06.
Article in English | MEDLINE | ID: mdl-38573232

ABSTRACT

AIMS: In the current paper, we aim to explore the effect of both current and former long-term anabolic-androgenic steroid (AAS) use on regulation of systemic inflammatory markers and mediators of extracellular matrix (ECM) remodelling and their association with hormones and echocardiographic myocardial pathology in weightlifters. METHODS AND RESULTS: In a cross-sectional study, 93 weightlifting AAS users, of whom 62 were current and 31 were past users, with at least 1-year cumulative AAS use (mean 11 ± 7 accumulated years of AAS use), were compared with 54 non-using weightlifting controls (WLCs) using clinical interview, blood pressure measurements, and echocardiography. Serum levels of interleukin (IL)-6, IL-8, tumour necrosis factor (TNF), interferon (IFN)-γ, growth differentiation factor (GDF)-15, and matrix metalloproteinase (MMP)-9, sex hormones, and lipids were analysed. It was found that serum levels of IL-8, GDF-15, and MMP-9 were significantly increased in current AAS users compared with former users and WLCs. Matrix metalloproteinase 9, but not IL-8, correlated consistently with sex hormone levels, and sex hormone levels correlated consistently with mean wall thickness, in current users. Moreover, HDL cholesterol was significantly lower in current vs. former AAS users and significantly inversely correlated with MMP-9 in current users. Further, in current users, MMP-9 and IL-8 correlated with markers of myocardial strain, and MMP-9 also correlated with indices of cardiac mass, which was not seen in former users. Mediation analyses suggested that MMP-9 could partly explain hormone-induced alterations in markers of myocardial damage in current users. CONCLUSION: Long-term AAS is associated with increased levels of markers of inflammation and ECM remodelling, which seems to have a hormone-dependent (MMP-9) and a hormone-independent (IL-8) association with markers of myocardial dysfunction.


Long-term use of anabolic-androgenic steroids (AASs) can increase inflammation and mediators of extracellular matrix (ECM) remodeling, which potentially could be involved in myocardial pathology seen in individuals using such steroids.Anabolic-androgenic steroid use increased levels of inflammatory marker IL-8 and marker of ECM remodelling matrix metalloproteinase-9 (MMP-9).Interleukin-8 and MMP-9 were both associated with myocardial pathology in current, but not former, users, suggesting that these markers are associated with the risk of myocardial damage during AAS use.


Subject(s)
Biomarkers , Interleukin-8 , Matrix Metalloproteinase 9 , Humans , Cross-Sectional Studies , Male , Biomarkers/blood , Matrix Metalloproteinase 9/blood , Adult , Interleukin-8/blood , Case-Control Studies , Anabolic Agents/adverse effects , Myocardium/pathology , Inflammation Mediators/blood , Up-Regulation , Female , Middle Aged , Time Factors , Androgens/blood , Testosterone Congeners/blood , Testosterone Congeners/adverse effects
12.
Ann Med ; 56(1): 2337717, 2024 Dec.
Article in English | MEDLINE | ID: mdl-38590148

ABSTRACT

BACKGROUND: The prevalence of anabolic-androgenic steroids (AAS) use is on the rise among athletes and bodybuilders worldwide. In addition to the well-documented adverse effects on hepatic, renal, and reproductive functions, there is an increasing recognition of psychiatric complications associated with AAS use. This study aimed to investigate psychiatric morbidity among male bodybuilders who are AAS users. METHODS: In this cross-sectional study, 25 male bodybuilders using AAS (mean age 31.2 ± 8.9 years) were compared with a control group of 25 healthy male bodybuilders matched in age (31.3 ± 5.5 years). The demographic, hormonal, and biochemical parameters of the participants were recorded. The impact of AAS use on psychiatric morbidity was assessed using the Beck Anxiety Inventory (BAI) and Beck Depression Inventory (BDI) in both groups. RESULTS: The BDI and BAI scores were significantly higher in male bodybuilders using anabolic-androgenic steroids (p < 0.0001). While the control group showed no instances of anxiety, seven individuals in the AAS user group reported mild anxiety. No participants in the control group exhibited depression, whereas seven AAS users displayed depressive symptoms (4 mild, 3 moderate). Correlations were observed between lactate dehydrogenase (LDH) levels and BAI scores, creatinine levels and both BAI and BDI scores, as well as between estradiol levels and BDI. CONCLUSION: The study concluded that AAS use among male bodybuilders is associated with elevated levels of depression and anxiety. Our findings suggest a potential correlation between anxiety and depression levels and the levels of creatinine, LDH, and estradiol in AAS users.


Subject(s)
Anabolic Agents , Anabolic Androgenic Steroids , Humans , Male , Young Adult , Adult , Cross-Sectional Studies , Creatinine , Depression/chemically induced , Depression/epidemiology , Anabolic Agents/adverse effects , Testosterone Congeners/adverse effects , Steroids/adverse effects , Anxiety/chemically induced , Estradiol
13.
MMW Fortschr Med ; 166(7): 65, 2024 04.
Article in German | MEDLINE | ID: mdl-38637399
14.
Endocrinology ; 165(5)2024 Mar 29.
Article in English | MEDLINE | ID: mdl-38563597

ABSTRACT

Biological sex is a primary determinant of athletic human performance involving strength, power, speed, and aerobic endurance and is more predictive of athletic performance than gender. This perspective article highlights 3 key medical and physiological insights related to recent evolving research into the sex differences in human physical performance: (1) sex and gender are not the same; (2) males and females exhibit profound differences in physical performance with males outperforming females in events and sports involving strength, power, speed, and aerobic endurance; (3) endogenous testosterone underpins sex differences in human physical performance with questions remaining on the roles of minipuberty in the sex differences in performance in prepubescent youth and the presence of the Y chromosome (SRY gene expression) in males, on athletic performance across all ages. Last, females are underrepresented as participants in biomedical research, which has led to a historical dearth of information on the mechanisms for sex differences in human physical performance and the capabilities of the female body. Collectively, greater effort and resources are needed to address the hormonal mechanisms for biological sex differences in human athletic performance before and after puberty.


Subject(s)
Athletic Performance , Sex Characteristics , Adolescent , Humans , Female , Male , Athletic Performance/physiology , Testosterone , Testosterone Congeners , Puberty/physiology
15.
Steroids ; 206: 109420, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38580048

ABSTRACT

The use of steroids in livestock animals is a source of concern for consumers because of the risks associated with the presence of their residues in foodstuffs of animal origin. Technological advances such as mass spectrometry have made it possible to play a fundamental role in controlling such practices, firstly for the discovery of marker metabolites but also for the monitoring of these compounds under the regulatory framework. Current control strategies rely on the monitoring of either the parent drug or its metabolites in various matrices of interest. As some of these steroids also have an endogenous status specific strategies have to be applied for control purposes. This review aims to provide a comprehensive and up-to-date knowledge of analytical strategies, whether targeted or non-targeted, and whether they focus on markers of exposure or effect in the specific context of chemical food safety regarding the use of anabolic steroids in livestock. The role of new approaches in data acquisition (e.g. ion mobility), processing and analysis, (e.g. molecular networking), is also discussed.


Subject(s)
Food Safety , Livestock , Animals , Livestock/metabolism , Anabolic Agents/analysis , Anabolic Agents/metabolism , Humans , Steroids/chemistry , Steroids/analysis , Steroids/metabolism , Testosterone Congeners/analysis , Testosterone Congeners/metabolism , Food Contamination/analysis , Anabolic Androgenic Steroids
16.
MMW Fortschr Med ; 166(4): 72, 2024 03.
Article in German | MEDLINE | ID: mdl-38453872
17.
BMC Public Health ; 24(1): 798, 2024 Mar 13.
Article in English | MEDLINE | ID: mdl-38481173

ABSTRACT

BACKGROUND: The COVID-19 pandemic has had a significant impact on individual health and fitness routines globally. Resistance training, in particular, has become increasingly popular among men and women looking to maintain or improve their physical fitness during the pandemic. However, using Anabolic Steroids (AS) for performance enhancement in resistance training has known adverse effects. Thus, this study aimed to explore the prevalence of AS use among men and women resistance training practitioners after the COVID-19 pandemic. METHODS: A cross-sectional survey was conducted among 3,603 resistance training practitioners (1,855 men and 1,748 women) in various geographical locations impacted by COVID-19. The participants were asked to complete self-administered questionnaires, which included questions regarding demographic information, training habits, and current or prior usage of AS. The data were analyzed using SPSS statistical software and the chi-square method, with a significance level of (P < 0.05). RESULTS: A total of 3603 men and women resistance training practitioners completed the survey. In the study, 53.05% of men and 41.99% of women used anabolic and androgenic steroids. Of those men who used steroids, 29.47% used Testosterone, while 31.20% of women used Winstrol. Additionally, 50.30% of men used steroids via injection, while 49.05% of women used them orally. According to the study, 49.99% of the participants had 6 to 12 months of experience with resistance training, and 64.25% of them underwent three training sessions per week. The analysis using the χ2 test did not reveal any significant difference between men and women in terms of duration of bodybuilding, frequency per week, and engagement in other activities. CONCLUSION: This study shows that a significant proportion of men and women resistance training practitioners used AS, particularly among young adults with limited training experience. Thus, there is a need for targeted education and awareness campaigns to address the hazards of AS use and promote healthy training habits during the COVID-19 pandemic.


Subject(s)
Anabolic Agents , COVID-19 , Resistance Training , Male , Young Adult , Humans , Female , Anabolic Androgenic Steroids , Pandemics , Resistance Training/methods , Prevalence , Cross-Sectional Studies , Anabolic Agents/therapeutic use , Testosterone Congeners , Steroids
18.
Article in English | MEDLINE | ID: mdl-38489940

ABSTRACT

During residue analysis in complex matrices for food safety purposes, interfering signals can sometimes overlap with those of the analyte of interest. Access to an additional separation dimension besides chromatographic and mass separation, such as ion mobility, can aid in removing interfering signals, allowing for correct analyte identification in these cases. In our laboratory, during routine LC-MS/MS analysis of liver samples for growth promoter residues, an interfering signal was found that matches the retention time and m/z values for stanozolol, a synthetic anabolic steroid. In the present work, the performance of a liquid chromatography coupled to ion mobility mass spectrometry (LC-IM-MS) method has been evaluated to study whether this LC-MS/MS false positive in liver samples could be eliminated by LC-IM-MS analysis. A cyclic ion mobility system already allowed the separation of stanozolol from the interfering peak after only one pass, showing a significant improvement compared to the conventional LC-MS/MS method. Additionally, collisional cross section (CCS) values were calculated and successfully compared with those from literature for identification purposes, eventually allowing both the identification and quantification of stanozolol in this complex matrix.


Subject(s)
Stanozolol , Tandem Mass Spectrometry , Chromatography, Liquid/methods , Tandem Mass Spectrometry/methods , Steroids/analysis , Testosterone Congeners
20.
Toxicol Mech Methods ; 34(6): 628-638, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38379298

ABSTRACT

This study focuses on the comparative metabolic profiling and effects of two steroid types: natural and synthetic, specifically 17α-methyl testosterone (17α-MT) at varying concentrations (1.5, 2, and 3 mg/kg) in rainbow trout (Oncorhynchus mykiss). Over a 75-day feeding trial, growth metrics, such as feed efficiency, daily specific growth, live weight gain, total weight gain, and survival rate were systematically monitored every 15 days. At the end of the feeding trial, histopathology, immunohistochemistry, and metabolome analyses were performed in the high-concentration groups (3 mg/kg natural and 3 mg/kg synthetic), in which the lowest survival rate was determined. Key findings reveal that the type of hormone significantly influences growth parameters. While some natural steroids enhanced certain growth aspects, synthetic variants often yielded better results. The metabolomic analysis highlighted significant shifts in the metabolism of tryptophan, purine, folate, primary bile acids, phosphonates, phosphinates, and xenobiotics via cytochrome P450 pathways. Histopathologically, the natural hormone groups showed similar testicular, hepatic, muscular, gill, cerebral, renal, and intestinal tissue structures to the control, with minor DNA damage and apoptosis observed through immunohistochemistry. Conversely, the synthetic hormone groups exhibited moderate DNA damage and mild degenerative and necrotic changes in histopathology.


Subject(s)
Cytochrome P-450 Enzyme System , Metabolomics , Oncorhynchus mykiss , Animals , Oncorhynchus mykiss/metabolism , Oncorhynchus mykiss/growth & development , Cytochrome P-450 Enzyme System/metabolism , Cytochrome P-450 Enzyme System/genetics , Male , Methyltestosterone/toxicity , Testosterone Congeners , Water Pollutants, Chemical/toxicity , Dose-Response Relationship, Drug , Metabolome/drug effects
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