An investigation on in vitro and in vivo antimicrobial properties of the antidepressant: Amitriptyline hydrochloride
Open accessAbstract
The antidepressant drug amitriptyline hydrochloride was obtained in a dry powder form and was screened against 253 strains of bacteria which included 72 Gram positive and 181 Gram negative bacteria and against 5 fungal strains. The minimum inhibitory concentration (MIC) was determined by inoculating a loopful of an overnight peptone water culture of the organism on nutrient agar plates containing increasing concentrations of amitriptyline hydrochloride (0, 10 μg/mL, 25 μg/mL, 50 μg/mL, 100 μg/mL, 200 μg/mL). Amitriptyline hydrochloride exhibited significant action against both Gram positive and Gram negative bacteria at 25-200 μg/mL. In the in vivo studies it was seen that amitriptyline hydrochloride at a concentration of 25 μg/g and 30 μg/g body weight of mouse offered significant protection to Swiss strain of white mice when challenged with 50 median lethal dose (MLD) of a virulent strain of Salmonella typhimurium NCTC 74. The in vivo data were highly significant (p<0.001) according to the chi-square test.
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Two or more benzene rings, a common feature of acridine and of some antidepressants and antipsychotics, could be among the key functional groups for antimicrobial activity.
“It has been suggested that two or more benzene rings, a common feature of acridine and of some antidepressants and antipsychotics (see Figure 2), could be among the key functional groups for antimicrobial activity [53].”
From Antimicrobial Properties of Antidepressants and Antipsychotics—Possibilities and Implications (2021) · cites this paper as [53]
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- Authors
- Mandal, A., Sinha, C., Jena, A. K., Ghosh, S., & Samanta, A.
- Affiliations
- Jadavpur University (IN)
- Corresponding author
- Samanta, Amalesh
- Venue
- Brazilian Journal of Microbiology
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2010-10
- Volume
- 41
- Issue
- 3
- Pages
- 635-642
- ISSN
- 1517-8382 (ISSN-L)
- PMC
- PMC3768647
- OpenAlex
- W1994618906
- Cited by
- 57
- References
- 24
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 5 · 2023: 6 · 2022: 6 · 2021: 6 · 2020: 9 · 2019: 7 · 2018: 3 · 2017: 4 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 1 · 2012: 2
- FWCI
- 0.63
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by-nc
- Locations
- Brazilian Journal of Microbiology (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Americanae (AECID Library) (submittedVersion, cc-by-nc)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Jadavpur University
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Antimicrobial agents and applications
- Physical Sciences › Chemistry › Organic Chemistry › Synthesis and Biological Evaluation
- Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
- Keywords
- amitriptyline hydrochloride, antimicrobial activity, antidepressants, antibacterial activity, antifungal activity, minimum inhibitory concentration, Salmonella typhimurium, mouse protection, Gram-positive bacteria, Gram-negative bacteria
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