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Evaluation of sex steroid hormones and reproductive irregularities in diethyl phthalate-exposed premature mice: modulatory effect of raw honey against potential anomalies

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Abstract

Phthalates, plasticizing chemicals, are top-rated environmental contaminants. Diethyl phthalate (DEP), a chief member of this family, was declared a potent endocrine disruptor and carcinogen in animals and humans. The current study was designed to explore the probable reproductive damage induced by DEP and the therapeutic efficacy of raw honey in male albino mice. Four-week-old 50 male mice were randomized equally in five groups, as control (C) received 0.1 ml distilled water; vehicle control (VC) received corn oil (0.1 ml/mouse); DEP (3mg/g/BW) dissolved in corn oil; honey control (HC) administered with honey (0.2 mg/g/day); and phthalate plus honey (P+H) administered with DEP and honey (3mg and 0.2 mg/g/BW/day respectively). Mice were treated through oral gavage for 54 days routinely, acclimatized for 6 days, and dissected. In the first instance, the antioxidant potential and total phenolic contents (TPC) of honey were analyzed through ferric reducing antioxidant power (FRAP) assay and Folin-Ciocalteu assay to confirm the antioxidant capacity of honey. The morphological, morphometric, histological, micrometric, sperm count, and hormonal analyses, and antioxidant capacity test in tissue homogenates were conducted by using tissues (testis, epididymis) and blood samples of mice. Mice exposed to DEP have a significant increase in body weight, LH level, and seminiferous tubule lumen diameter and decrease in the gonado-somatic index, testosterone level, sperm count, and seminiferous tubule diameter. Additionally, histopathology of testes showed interstitial space dilations, exfoliations, Leydig cell atrophy, germ cell degenerations, and spermatid retention in DEP-exposed testes sections. However, concomitant use of honey and DEP had shown a significant improvement in histopathological lesions, steroid hormone levels, and healthy sperm count. By these results, it is concluded that honey possessed antioxidant potential that can efficiently protect DEP-induced anomalies in male mice.

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Acknowledgements

We are thankful to the officials of the the Institute of Zoology, University of the Punjab, Lahore, Pakistan, for providing us research facilities.

Availability of data and materials

Most of the data generated during this study are included in this article. However, raw data sheets and histopathological figures are available from the corresponding as well as co-authors upon reasonable request.

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Contributions

Conceptualization: Chaman Ara, Asmatullah. Data curation: Chaman Ara, Asmatullah, Faiza Yaseen, Shaukat Ali, Nagina Ramzan, Hafiz Abdullah Shakir, Shagufta Andleeb, Muhammad Khan. Formal analysis: Chaman Ara, Asmatullah, Faiza Yaseen, Shaukat Ali, Nagina Ramzan. Investigation: Chaman Ara, Asmatullah, Shaukat Ali, Hafiz Abdullah Shakir, Muhammad Khan. Methodology: Chaman Ara, Asmatullah, Faiza Yaseen, Shagufta Andleeb, Shaukat Ali, Nagina Ramzan, Hafiz Abdullah Shakir, Muhammad Khan. Histopathology: Faiza Yaseen, Nagina Ramzan, Muhammad Khan. Software: Shaukat Ali, Hafiz Abdullah Shakir. Supervision: Chaman Ara, Asmatullah. Writing original draft: Faiza Yaseen, Nagina Ramzan, Hafiz Abdullah Shakir, Shaukat Ali, Muhammad Khan, Shagufta Andleeb. Review and editing: Chaman Ara, Asmatullah, Shagufta Andleeb, Shaukat Ali, Hafiz Abdullah Shakir.

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Correspondence to Shaukat Ali.

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Ethics approval

All animal trials were executed according to local and worldwide procedures. The nearby way is the Wet op de dierproeven (article 9) of Dutch law (international) and an associated rule planned via the Bureau of Animal Research Licensing, Local University, as detailed in our earlier papers (Ali et al. (Ali et al. 2020), (Ali 2020), (Ali et al. 2020); Hussain et al. (Hussain et al. 2020); Ali et al. (Ali et al. 2020), (Ali 2020), (Ali et al. 2020); Ara et al. (Ara et al. 2020); Ali et al. (Ali et al. 2020), (Ali 2020), (Ali et al. 2020); Khan et al. (Khan et al. 2019); Ali et al. (Ali et al. 2019); Mumtaz et al. (Mumtaz et al. 2019); Mughal et al. (Mughal et al. 2019); Dar et al. (Dar et al. 2019)). The rearing and use of mice were carried out using NIH Publication “Guide for the Care and Use of Laboratory Animals” (NRC 2004) and with the approval vide No. D/681/UZ dated 04-04-2019 by the local bioethical committee of the University on animal experimentation.

Consent to participate

The rearing and use of mice was following NIH Publication “Guide for the Care and Use of Laboratory Animals” (NRC 2004) and with the approval by the local ethical committee of University of the Punjab, Lahore, Pakistan, on animal experimentation (can provide a certificate on demand).

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Ara, C., Asmatullah, Yaseen, F. et al. Evaluation of sex steroid hormones and reproductive irregularities in diethyl phthalate-exposed premature mice: modulatory effect of raw honey against potential anomalies. Environ Sci Pollut Res 28, 55265–55276 (2021). https://doi.org/10.1007/s11356-021-14774-w

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