Ciprofloxacin's Structure Causing Fluoride-Related Toxicity: A Case Report.

Curr Drug Saf

Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil.

Published: August 2025


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Background: Ciprofloxacin is a fluoroquinolone antibiotic widely used in clinical practice with a fluorine atom in its chemical structure. Like other antibiotics, it can induce several adverse effects, such as tendinopathy, musculoskeletal toxicity, peripheral neuropathy, and cardiotoxicity, thereby causing relevant and irreversible health injuries. Ciprofloxacin fluoride's adverse toxicological effect associated with a urinary fluoride concentration above the reference value has not yet been reported.

Objective: This case report aimed to provide evidence of ciprofloxacin treatment intoxication, an antibiotic containing a fluorine atom in its chemical structure, associated with a fluoride urine concentration above the reference value.

Case Presentation: A 32-year-old man developed tendinopathy and peripheral neuropathy on the third day's night after initiating the ciprofloxacin doses, exhibiting symptoms comparable to a low-power electrical discharge and very intense motor agitation. After following habitual laboratory exams, a urinary fluoride measurement was performed by an ion-selective electrode. The urinary fluoride concentration was above the reference values in mg/g of creatinine.

Conclusion: This is the first study that has described an association among ciprofloxacinfluoride, tendinopathies, and peripheral neuropathy. The patient's symptomatology has suggested a toxic effect related to fluoride. We consider the documented finding of a fluorine atom at the ciprofloxacin structure and its toxic potential neuropathies and tendinopathies as an issue of alert.

Download full-text PDF

Source
http://dx.doi.org/10.2174/0115748863321622240819101438DOI Listing

Publication Analysis

Top Keywords

fluorine atom
12
peripheral neuropathy
12
urinary fluoride
12
concentration reference
12
case report
8
atom chemical
8
chemical structure
8
fluoride concentration
8
ciprofloxacin
5
fluoride
5

Similar Publications

4,4-Difluoro-4-bora-3,4-diaza--indacene systems (BODIPY) are widely investigated fluorophores. The BODIPY core allows for introducing substituents at different positions. Taking advantage of the versatile properties of carborane cages for the modification of photoactive compounds, we developed the synthesis of carborane-substituted BODIPYs.

View Article and Find Full Text PDF

Atomically dispersed Ru in ZIF-67 as a high-performance HER catalyst: structural evolution and deactivation mechanism elucidation.

Mater Horiz

September 2025

State Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.

Despite the prevalence of zeolitic imidazolate framework (ZIF-67)-derived catalysts for the hydrogen evolution reaction (HER), the catalytic potential of pristine ZIF-67 remains obscured by its inherent inertness. In this work, we address this gap by developing an annealing-free strategy to implant atomically dispersed noble metals (Ru, Rh, and Pd) into the intact ZIF-67 framework. Remarkably, Ru single-atom modification reduces the HER overpotential of ZIF-67/CC by 252 mV at 10 mA cm (from 331 mV to 79 mV) and slashes the Tafel slope by 70%, representing the most significant activation of pristine ZIF-67 reported for the HER.

View Article and Find Full Text PDF

Substituting Superhalogens for the Fluorine Atom of 5-Fluorouracil: A New Approach to Modulate its Structure, Electronic Properties, and Chemical Reactivity.

Chemphyschem

September 2025

Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, The School of Pharmacy, Fujian Medical University, Fuzhou, 350108, P. R. China.

The development of 5-fluorouracil (5-FU) analogs contributes to overcome its side effects and drug resistance. To explore more 5-FU analogs, the substituent effect of BO, NO, and PO on the geometric structure, electronic properties, and reactivity of 5-FU has been systematically studied by density functional theory calculations and molecular docking in this article. It is revealed that the introduced superhalogens can not only form stable covalent bonds with the pyrimidine ring, like the original F atom in 5-FU, but also pose significant effect on the geometric and electronic structures of 5-FU.

View Article and Find Full Text PDF

Identification of Double-Chain ZnO Structure on ZrO as a Highly Active Site for CO Hydrogenation to Methanol.

J Phys Chem Lett

September 2025

State Key Laboratory of Fluorine & Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China.

ZnZrO catalysts exhibit excellent performance in the hydrogenation of CO to methanol, yet the structural identification of active sites in the mixed oxide remains elusive. Herein, combining density functional theory calculations, large-scale machine-learning atomic simulations, and microkinetic modeling, we discovered that double-chain ZnO structures supported on monoclinic ZrO(1̅11) surfaces (ZnO-ZrO) are highly active and stable for methanol synthesis. The double-chain ZnO structure, corresponding to 50% ZnO surface coverage and featuring interconnected 8-membered rings, induces a local minimum (0.

View Article and Find Full Text PDF

Cu/Ru Relay Catalysis Enables Functionalization of Allenic Alcohols with Stereodivergence and Skeleton Diversity.

J Am Chem Soc

August 2025

Hubei Research Center of Fundamental Science-Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.

The stereodivergent synthesis of structurally complex molecules bearing multiple stereochemical elements represents a pivotal challenge in modern synthetic chemistry, particularly for bioactive compounds, where stereochemical nuances dictate pharmacological profiles. While stereodivergent dual catalysis has advanced full access to stereoisomers with stereogenic centers, the integration of stereodefined alkenes into chiral molecules with both stereochemical and skeletal diversification remains elusive. In this study, we report stereo- and skeleton-divergent access to chiral fluorinated -heterocycles with comprehensive stereocontrol of [(,), (,), (,), (,)] and [(,), (,), (,), (,)] enabled by a bimetallic Cu/Ru relay catalytic system, featuring redox-neutral efficiency and atom/step economy.

View Article and Find Full Text PDF