Cefazolin Research Articles

Adsorption of antibiotic cefazolin in organoclay fixed-bed column: characterization, mathematical modeling, and DFT-based calculations

Cefazolin (CFZ) is an antibiotic widely used in veterinary and human medicine that has been detected in high residual levels in the environment and is therefore considered an emerging contaminant. This work evaluated the adsorption of this contaminant by Spectrogel® type C organoclay, in continuous mode using a fixed-bed column. The fluid dynamics and the effect of the CFZ concentration were evaluated. In addition, prior and post-process organoclay were characterized. The continuous system under the conditions of C0 = 0.3mmol/L and Q = 0.1mL/min presented lower values of mass transfer zone (5.88cm), whereas the system with C0 = 0.5mmol/L and Q = 0.1mL/min achieved higher CFZ adsorption capacity (20µmol/g). Phenomenological and mass-transfer models were applied to the experimental data. The dual-site diffusion (DualSD) model better described the breakthrough (BTC) data. Furthermore, density functional theory (DFT) calculation was performed at the molecular level to provide a better comprehension of CFZ adsorption.

Effect of Perioperative Antibiotics on Prognosis of Patients with Hemorrhoids

To explore the feasibility of not using antibiotics before and after hemorrhoid surgery is the main objective of the study. A total of 68 patients with hemorrhoids who were admitted to Ningbo Anorectal Hospital from December 2019 to May 2021 were selected, including 36 males and 32 females. They were randomly divided into an experimental group and a control group, 34 patients in each group. The patients in the experimental group were not given antibiotics, while the patients in the control group were given cefazolin sodium 1-2 g and 100 ml of sodium chloride intravenously 30 min before surgery and the same dose of antibiotics was given intravenously after surgery (1 time/12 h), the postoperative administration time is 24 h, not more than 48 h. The intraoperative conditions, postoperative wound infection rate, hospital stay, postoperative recurrence rate and other aspects of the two groups of patients were observed and compared. There was no significant difference in postoperative body temperature, white blood cell count, postoperative wound infection and average hospital stay and recovery time between the two groups. The adverse drug reaction rate in the experimental group was lower than that in the control group. It is safe and feasible not to use antibiotics in the perioperative period of hemorrhoids.

Understanding Solvation Behavior of Cefazolin Sodium in the Aqueous Choline Chloride/Ethylene Glycol or Urea Solutions through Vapor Pressure Osmometry and Volumetric and Acoustic Measurements

Understanding Solvation Behavior of Cefazolin Sodium in the Aqueous Choline Chloride/Ethylene Glycol or Urea Solutions through Vapor Pressure Osmometry and Volumetric and Acoustic Measurements

Validation of spectrophotometric method for quantification of cefazoline in simulated tear fluid and porcine ocular tissue from thermosensitive-mucoadhesive in situ ocular gel preparation

In the formulation development, it is necessary to validate the analytical method as a critical step. Here, we validated the spectrophotometric method of cefazoline (CFZ) from thermosensitive-mucoadhesive in situ gels in simulated tear fluid (STF) and ocular tissue for in vitro and ex vivo studies, respectively. The method was validated as per ICH guidelines, showing excellent linearity with the correlation coefficient values of 0.9997 in STF and 0.9981 in ocular tissue with acceptable precision and accuracy. The LOD values were 0.496 µg/mL and 2.390 µg/mL in STF and ocular tissue, respectively. Moreover, LOQ values were 1.504 µg/mL in STF and 7.242 µg/mL in ocular tissue. The method was utilized in the in vitro and ex vivo studies, showing that the concentration of CFZ localized in the ocular tissue was significantly improved following its incorporation into thermosensitive mucoadhesive in situ gels. In vivo studies with suitable analytical method must be performed.

Drug resistance characteristics of Diarrheagenic Escherichia coli isolated from patients with diarrhea in Shunyi district of Beijing, 2013–2019

Objective To study the drug resistance characteristics of Diarrheagenic Escherichia coli (DEC) isolated from patients with diarrhea in two sentinel hospitals in Shunyi district of Beijing during 2013—2019. Method Stool samples of diarrhea patients were collected in the two sentinel hospitals during this period. Isolation, bacterial identification and PCR typing were conducted for DEC strains. Antimicrobial susceptibility tests were carried out using micro broth method to analyze the drug resistance characteristics of the isolated strains, including resistance rate, non-sensitive rate, multi-drug resistance rate and drug resistance spectrum. Result The detection rate of DEC in diarrhea patients was 9.53% (232/2434). The proportions of Enterotoxic Escherichia coli (ETEC), Enteropathogenic Escherichia coli (EPEC), and Enteroaggregative Escherichia coli (EAEC) were 56.47% (131/232), 27.16% (63/232) and 16.38% (38/232), respectively. The multi-drug resistance rates of DEC with 90 drug resistance spectrum, ETEC with 36 drug resistance spectrum, EPEC with 42 drug resistance spectrum, and EAEC with 23 drug resistance spectrum were 33.19% (77/232), 17.56% (23/131), 58.73% (37/63), 44.74% (17/38), respectively. Antibacterial drugs with resistance rate ≥30% included nudicacid (NAL) and ampicillin (AMP) for ETEC; AMP, tetracycline (TET), sulfamethoxazole tablets (SXT), sulfamethoxazole (Sul), NAL for EPEC; NAL, AMP, SXT, Sul, TET for EAEC. A comparison of the differences in the antimicrobial susceptibility tests during 2013—2016 and during 2017—2019 found that the resistance of ETEC to AMP, cefazolin (CFZ), TET, cefepime (FEP), aztreonam (AZM), and ampicillin/sulbactam (AMS) increased, while the resistance to Sul decreased; the resistance of EPEC to gentamicin (GEN) decreased; the resistance of EAEC to cefotaxime (CTX), GEN, and doxycycline (DOX) decreased. Conclusion Among the diarrhea cases in Shunyi, the intensity of DEC spread was high, and the spread and the drug resistances of ETEC, EPEC and EAEC had unique characteristics. The drug resistance was serious, to which close attention should be paid.

Treatment of pharmaceutical wastewater containing cefazolin by electrocoagulation (EC): Optimization of various parameters using response surface methodology (RSM), kinetics and isotherms study

Pharmaceutical wastewaters presently remain as one of the primary roots of environmental pollution. The current study mainly concentrated on removing cefazolin (CEZ) from pharmaceutical wastewater employing the electrocoagulation (EC) process using iron electrodes. The EC experimental conditions were achieved by using response surface methodology (RSM) with an efficiency of 85.65% under optimal working conditions of pH = 8.0, current density (16 mA/cm2), initial CEZ concentration (25 mg/L), and inter-electrode distance (d = 1.0 cm) at an equilibrium electrolysis time of 40 min. The experimental results obtained were in good agreement with the predicted CEZ removal efficiency of 86.7%. Besides, Analysis of variance (ANOVA) revealed that the experimental model was best suited to a second-order polynomial equation, with an R2 value of 0.92. Moreover, the fisher's F-value of 13.67 and low probability value (p < 0.0001) suggest a decent correlation between the experimental and predicted CEZ elimination levels. Additionally, the kinetic adsorption and isotherm results indicated that the model follows pseudo-second-order kinetic adsorption with R2 = 0.999. The Langmuir isotherm with R2 = 0.9508 provides the best match when compared to the Freundlich model. Finally, the energy consumption, electrode dissolution, and operating cost per kg COD eliminated under optimal conditions were calculated to be 0.7395 kW h, 1.513 kg, and 0.89 USD, respectively.

Structure-dependent surface catalytic degradation of cephalosporin antibiotics on the aged polyvinyl chloride microplastics

Microplastics (MPs) have been recognized as a global concern due to their potential health effect, as MPs could adsorb and carry various pollutants in aquatic environment. In the present study, a new environmental behavior related to polyvinyl chloride microplastics (PVC-MPs) and the underlying mechanism were described. Our results showed that the photo-aged PVC-MPs could affect the transformation of cephalosporin antibiotics. For instance, the presence of altered PVC-MPs significantly accelerated the hydrolysis of cefazolin (CFZ), but exhibited negligible effect on the degradation of cephalexin (CFX). As indicated by in situ Fourier transform infrared spectra and theoretical calculations, hydrogen bonds could be formed between β-lactam carbonyl of CFZ and the oxygen-containing moieties on the aged PVC-MP surfaces. The hydrogen-bonding was able to significantly increase the positive atomic Mulliken charge on the β-lactam carbonyl carbon, thus narrowing the energy gap of CFZ hydrolysis and subsequently enhancing the disruption of β-lactam ring. While for CFX, instead of the β-lactam carbonyl, the amide amino group was involved in the hydrogen-bonding due to the structural difference. Therefore, in addition to increasing the adsorption capacity, the aged PVC-MPs could act as the catalyst to mediate the transformation of antibiotics. Our study would help improve the understanding for interactions between contaminants and MPs in natural environments.

Significance of Antimicrobial Prophylaxis for the Prevention of Early-Onset Pneumonia After Radical Esophageal Cancer Resection: A Retrospective Analysis of 356 Patients Undergoing Thoracoscopic Esophagectomy.

Postoperative pneumonia is a common complication after esophagectomy and is associated with a high mortality rate. Although many randomized, controlled trials have been conducted on the prevention of postoperative pneumonia, little attention has been paid to the efficacy of antimicrobial prophylaxis. The purpose of this study was to investigate the impact of antimicrobial prophylaxis on the prevention of postoperative pneumonia. Data of patients with esophageal cancer who underwent thoracoscopic esophagectomy between 2016 and 2020 were collected. Early-period patients received cefazolin (CEZ) per protocol as antimicrobial prophylaxis (n = 250), and later-period patients received ampicillin/sulbactam (ABPC/SBT) (n = 106) because of the unavailability of CEZ in Japan. The incidence of pneumonia was compared between treatments in this quasi-experimental setting. Pneumonia detected by routine computed tomography (CT) on postoperative Days 5-6 was defined as early-onset pneumonia, and pneumonia that developed later was defined as late-onset pneumonia. The incidence of early-onset pneumonia was significantly lower (3.8% vs. 13.6%, P = 0.006), and the median length of postoperative hospital stay was significantly shorter (17 vs. 20 days, P < 0.001) in the ABPC/SBT group than in the CEZ group. The incidence of late-onset pneumonia was similar between groups (9.4% vs. 10.0%, P = 0.870). The incidence of Clostridioides difficile infections and the incidence of multidrug-resistant organisms were similar between groups. Multivariate analyses consistently showed the superiority of ABPC/SBT to CEZ in preventing early-onset pneumonia (odds ratio: 0.20, P = 0.006). ABPC/SBT after esophagectomy was better at preventing early-onset pneumonia compared with CEZ and was feasible regarding the development of antimicrobial resistance.

Umbilical microflora and pediatric surgery.

In pediatric surgery, the umbilicus with humid environment prone to bacterial colonization has become the most common site of entrance into the peritoneum. However, the umbilical flora in children has never been reported. This study aimed to describe the characteristics of umbilical microflora in children before antiseptic skin preparation. We prospectively reviewed all children (age, ≤ 15years) undergoing surgical procedures using umbilical access between April 2020 and June 2021. Before antiseptic skin preparation, culture swabs were taken from the umbilicus. Data on age, sex, and surgical procedure as well as microflora results and clinical findings were analyzed. Overall, data on 123 children aged between 9days and 15years (median: 3years) were obtained. In the umbilicus, the most frequent colonizing bacteria were coagulase-negative Staphylococcus species and Corynebacterium. The isolation of intestinal bacteria from children aged ≤ 3years was significantly increased (P = 0.03). The results of the multidrug resistance test revealed that the bacteria from the umbilicus exhibited a high frequency of cefazolin (CEZ) resistance (46.1%). No postoperative surgical site infection was recorded in our study. This prospective study is the first report to investigate the umbilical microflora in over 100 children. In this study, a large spectrum of both resident and transient microflora was cultured from the umbilicus. This umbilical microflora was similar to previous reports of adult microflora except in children aged ≤ 3years. Our data suggest that in children ≤ 3years, preoperative and postoperative antibiotics should be chosen by considering CEZ resistance and intestinal bacteria. The result of umbilical microflora would be useful to select the antibiotics for treatment of surgical site infection (SSI), and the culture swabs from the umbilicus before the operation for the children at high risk for SSI are highly recommended.

DEVELOPMENT AND RESEARCH OF POLYMER COMPOSITE MATERIAL WITH CEFAZOLIN BASED ON POLYURETHANE WITH ISOCYANURATE FRAGMENTS

Institute of Chemistry of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine Developed polymer composite material with Cefazolin based on polyurethane with isocyanurate fragments (PU), synthesized on the basis of polyoxypropylene glycol (POPG 1000), TDI (2,4;2,6-toluene diisocyanate) and 2,4,6-triisocyanate(trishexamethylene) isocyanate (ICC, Tolonate ™ HDT-LV, MM 1200) at a ratio of NCO: OH = 1: 1 in the medium N,N’-dimethylacetamide (DMAA) and Cefazolin (CFZ). CFZ is immobilized on isocyanurate-containing polyurethane by introducing a solution of CFZ with DMA into the reaction the amount of 5 wt. %. The synthesized polymeric material (PU-CFZ) represents a transparent film of yellow color with physical and mechanical characteristics: σ = 0,15 MPa; ε = 63.40%. According to IR spectroscopy, Cefazolin is immobilized on the polymer matrix by physically due to hydrogen interactions. The influence of biological medium 199 (BM 199) on the structure and properties of PU-CFZ during incubation for 1, 3 and 6 months was studied. It was found that after incubation in BM 199, the structure of PU-CFZ changes as a result of the interaction of enzyme molecules that are part of BM 199 with urethane and amide groups of PU. According to the results of physical and mechanical studies, after incubation in BM 199 for 6 months, PU-CFZ samples are characterized by tensile strength of 0.36 MPa and elongation at break of 98%, ie retain sufficient performance for use in biological objects for up to 6 months. Composite materials with Cefazolin are able to prolong the release of the drug for 28 days in an amount of about 30%, which is sufficient to provide a local therapeutic effect. According to the results of the cytotoxicity study of the developed material by in vitro tissue culture, it was found that the composite material based on isocyanurate-containing polyurethane with Cefazolin is biocompatible.

Complex Formation of Cefazolin with Ca2+ and Mg2+: Synthesis, DFT, Spectral and Antibacterial Determination

AbstractMg(II) and Ca(II) complexes with cefazolin were synthesized and investigated using elemental and atomic‐emission analysis, TGA, X‐ray diffraction, FT‐IR spectroscopy, 1H and 13CNMR, DFT calculations, and QTAIM analysis. The thermal behavior of these complexes was also studied. In the magnesium complex, two cefazolin ions are coordinated to the metal ion through the oxygen atoms of the lactam and carboxylate groups as a bidentate ligand. However, cefazolin chelated to the calcium ion through both oxygen atoms of the carboxylate groups and the lactam groups′ oxygen atoms as tridentate ligand. Sodium cefazolin and metal complexes were also screened for antibacterial activity against Staphylococcus aureus and Escherichia coli. The calcium complex exhibited higher antibacterial effects than the magnesium complex (5.2–7.7 % higher against S. aureus– and 15.4–27.3 % against E. coli), which is related to weaker binding of Ca, compared to Mg, with the oxygen atom of lactam group and, as a result, more free releasing of the lactam group in the solving process.

Green and sensitive spectrofluorimetric method for the determination of two cephalosporins in dosage forms.

Using two green and sensitive spectrofluorimetric methods, we quantified two cephalosporins, cefepime (CFM) and cefazolin (CFZ), in raw and pharmaceutical formulations. The first method is based on the reaction between CFM and fluorescamine (borate buffer, pH 8), which yields a highly fluorescent product. After excitation at 384 nm, the fluorescent product emits light at 484 nm. At concentration ranges from 12.0 to 120.0 ng ml−1, the relative fluorescence intensity/concentration curve was linear with a limit of quantification (LOQ) of 2.46 ng ml−1. The second method relied on measuring the CFZ quenching action on acriflavine fluorescence through formation of an ion-associate complex using Britton–Robinson buffer at pH 8. We measured acriflavine fluorescence at 505 nm after excitation at 265 nm. The decrease in acriflavine fluorescence intensity was CFZ concentration-dependent. Using this method, we quantified CFZ in concentrations ranging from 1 to 10 µg ml−1 with a LOQ of 0.48 µg ml−1. We studied and optimized the factors influencing reaction product formation. Moreover, we adapted our methods to the investigation of the mentioned drugs in raw and pharmaceutical formulations with greatly satisfying results. We statistically validated our methods according to International Council on Harmonisation Guidelines. The obtained results were consistent with those obtained with the official high-performance liquid chromatography methods.

The potential impact of discrepancies between automated susceptibility platforms and other testing metho`dologies for cefazolin in the treatment of Enterobacterales bloodstream infections

Revised breakpoints for cefazolin (CFZ) against Enterobacterales may be difficult to implement with current automated susceptibility testing platforms and could falsely report organisms as susceptible, leading to inappropriate treatment for bloodstream infections (BSI). This was a retrospective cohort of adult patients with Enterobacterales BSI reported CFZ susceptible per Vitek®2. The primary outcome was the percentage susceptible by minimum inhibitory concentration (MIC) Gradient Test Strips and disk diffusion. Secondary outcomes included clinical outcomes between CFZ and non–CFZ-treated patients. Among 195 isolates reported CFZ-susceptible per Vitek®2, 84 (43.1%) were CFZ susceptible by MIC Gradient Test Strips vs 119 (61%) by disk diffusion. No difference was noted in 30-day all-cause mortality, secondary complications, or 30-day readmissions. Treatment failure was less likely to occur with source control (adjusted OR 0.06) and infectious disease consult (adjusted OR 0.37). There was a large degree of discrepancy between automated testing and manual methods; the clinical impact of this discrepancy warrants further investigation.

Feasibility of oral antibiotic prophylaxis in elective laparoscopic cholecystectomy during periods of limited cefazolin supply.

In March 2019, the supply of cefazolin sodium (CEZ) became difficult owing to contamination of the drug substance. We investigated the efficacy and safety of the oral administration of cephalexin (CEX) in preventing infectious complications following elective laparoscopic cholecystectomy (LC). From July 2018 to June 2019, 1 g of CEZ was administered intravenously within 30 min prior to LC (IV group). From July 2019 to June 2020, 0.5g of CEX was administrated orally within 2h prior to LC (oral group). We compared clinicopathologic variables and perioperative results between these two groups. During the period, 60 patients underwent elective LC; 35 from the oral group and 25 from the IV group. There was no significant difference in the surgical site infection (P =0.37), distant infection (P =0.23), and postoperative medical costs (P =0.11) between both groups. Postoperative nausea and vomiting were significantly higher in the oral group (P =0.04), whereas the C-reactive protein value on the first day after the operation was significantly lower in the oral group (P < 0.01). During the period of limited CEZ supply, oral administration of CEX may be an alternative antibiotic prophylaxis in LC.

Clinical Outcomes of Daptomycin Versus Anti-Staphylococcal Beta-Lactams in Definitive Treatment of Methicillin-susceptible Staphylococcus aureus Bloodstream Infections

ObjectivesStaphylococcus aureus (S. aureus) is the leading cause of bacteraemia and infective endocarditis worldwide. The preferred management of patients with methicillin-susceptible S. aureus (MSSA) bacteraemia includes definitive therapy with intravenous anti-staphylococcal beta-lactam (ASBL) antibiotics. Daptomycin (DAP) has been targeted as a viable substitute for beta-lactam allergic or intolerant patients. MethodsThis single-center retrospective cohort study assessed clinical outcomes of DAP compared with ASBL antibiotics [nafcillin (NAF) or cefazolin (CFZ)] for the treatment of MSSA bacteraemia in patients hospitalised from 01 November 2011 to 31 October 2018. The primary outcome was a composite of the following: clinical failure, MSSA recurrence and MSSA persistence or inpatient infection-related mortality. Secondary outcomes included duration of MSSA bacteraemia, infection-related length of stay, infection-related 90-day readmission, 30-day all-cause mortality, and adverse events necessitating a change in therapy. ResultsOf 89 patients with MSSA bacteraemia who were included: 29 received DAP, 30 received NAF and 30 received CFZ. There was no difference in the composite primary outcome in patients treated with DAP compared with ASBL (10% vs. 5%, P = 0.39). The DAP cohort had a longer hospital length of stay compared with the ASBL group (20 days vs. 11.5 days, P = 0.0007). No differences were detected between other secondary outcomes. ConclusionThis study suggests that DAP may serve as a comparable alternative to ASBLs for treatment of MSSA bacteraemia, as no differences in clinical outcomes were identified. Larger studies are needed to confirm these findings.

Stability and Compatibility Aspects of Drugs: The Case of Selected Cephalosporins.

Intravenous drug incompatibilities are a common cause of medical errors, contributing to ineffective therapy and even life-threatening events. The co-administration of drugs must always be supported by studies confirming compatibility and thus guarantee the therapy’s safety. Particular attention should be paid to the possible incompatibilities or degradation of intravenous cephalosporins in different infusion regimens since the administration of drugs with inadequate quality may cause treatment failure. Therefore, an appropriate stability test should be performed. The study aimed to present various aspects of the stability and compatibility of five cephalosporins: cefepime (CFE), cefuroxime (CFU), ceftriaxone (CFX), ceftazidime (CFZ), and cefazoline (CFL). The degradation studies in parenteral infusion fluids and PN admixtures were conducted for CFE and CFU. The interactions between CFX or CFZ and PN admixtures, as well as the compatibility of CFL with five commercial parenteral nutrition (PN) admixtures, were investigated. The content of CFX and CFZ in PN admixture after 24 h was >90%. CFL administered simultaneously with PN admixture by the same infusion set using Y-site was compatible only with Nutriflex Lipid Special. CFE and CFU were stable in all tested infusion fluids for a minimum of 48 h and decomposed in PN admixtures during storage.

Effect of Cefazolin Sodium on Perioperative Prophylactic Anti-Infection in Patients Undergoing Gynecological Surgery

&lt;p&gt;Purpose: The purpose is to investigate the effect of cefazolin sodium on perioperative prophylactic anti-infection in patients undergoing gynecological surgery. Methods: 112 cases of gynecological surgery from January 2019 to April 2020 were divided into the control group and the observation group, with 56 cases in each group. They were given cefazolin sodium + metronidazole and cefazolin sodium monotherapy respectively. The perioperative white blood cells and the incidence of adverse reactions of the two groups were compared. Results: There was no difference in the normal rate of white blood cell count between the observation group and the control group (P &amp;gt; 0.05), and no adverse reaction in the observation group, which was significantly lower than 7.14% in the control group (P &amp;lt; 0.05). Conclusion: the use of cefazolin sodium in perioperative period of gynecological surgery can prevent infection, with advanced security, less adverse reactions and high value.&lt;/p&gt;

Multi-step cefazolin sodium release from bioactive TiO2 nanotubes: Surface and polymer coverage effects

Bacterial implant-related infections have been pointed out as the leading cause of metal implant failure. Recently, nanotexturization of biomaterials surface associated with antibiotic loading revealed itself as a promising strategy for enhancing osseointegration while mitigating bacterial infections. However, fewer studies describe the effects of multi-step local drug delivery. This study investigates 1 mg Cefazolin Sodium (CS) release from anodic nanotextured titanium-based devices and the effect of polymer coverage with differential aqua solubility characteristics (Chitosan—CH and Carboxymethylcellulose—CM). Results show that larger inner pore diameters are related to longer drug release times on uncovered samples. The polymeric coverage decreases the release rates, highlighting the Carboxymethylcellulose boosting the Cefazolin release time by 51–77 fold. All biomaterials exhibited a low or absent hemolytic activity and considerable bacteria inactivation. In summary, 40 °C/CM-based samples present the most promising results for drug release devices.

A Simultaneous, Validated RP-HPLC Method for Determination of Eight Cephalosporins in Pharmaceutical Formulations.

A reversed phase high performance liquid chromatographic method with isocratic solvent system has been developed and validated for the simultaneous determination of eight of cephalosporins antibiotics (Cefepime Hydrochloride, Ceftazidime, Ceftiofur Sodium, Cefotaxime Sodium, Ceftriaxone Sodium, Cefoperazone Sodium, Cephradine and Cefazolin Sodium) in pharmaceutical formulations with run time of 35 min. The best separation was obtained by using a 250 mm × 4.6 mm i.d, 5.0 μm particle size C8 reversed phase Agilent column and 0.1 M ammonium acetate buffer (pH 5.6): Acetonitril, 95:5 (v/v) as mobile phase at a flow rate of 0.8 mL/min. UV detection was conducted at 250 nm and column temperature at 30° C. The method linearity achieved over the concentration range of 0.5-50 μg/ mL with correlation coefficient (r2= 0.9999) for each studied cephalosporins. The developed method achieved lower limits of detection (0.018 µg/mL: 0.03 µg/mL) and lower limits of quantification (0.056 µg/mL: 0.09 µg/mL). The suggested method is highly sensitive, accurate, precise, and could be used for quality control assay and routine analysis for this group of cephalosporins in pharmaceutical formulations.

Cefazolin Use in Patients with Penicillin Allergy

The frequency of cross-reactivity between cephalosporins and penicillin is reported to be about 10%, although many experts believe it is much lower.