Use Of Antiseptics Research Articles

A New Approach to Evaluate the Bactericidal Activity of Different Antiseptic Ophthalmic Preparations Used as Surgical Prophylaxis

Background: A survey conducted by the European Observatory on Cataract Surgery showed high heterogeneity in the use of antiseptics both preoperatively and in the operating room, highlighting the absence of a global consensus regarding ocular infection prophylaxis in cataract surgery. Methods: The antibacterial activity of seven antiseptic ophthalmic formulations (AOFs) registered as medical devices and the two most common disinfectants were evaluated in vitro against five bacterial species. The viability of bacterial strains after exposure to the antiseptic was evaluated with different techniques: the in vitro Minimum Inhibitory Concentration and the subsequent Minimum Bactericidal Concentration, performed on liquid and solid culture medium. Furthermore, a real-time assessment of bacterial viability was conducted using double staining for live/dead bacterial cells by fluorimetric assay. This evaluation was performed on both the time-killing curve and the tear dilution effect test. Results: We observed a high variability across the different AOFs in terms of inhibitory/bactericidal concentration and timing on Gram-positive and Gram-negative bacterial classes. The results indicated that among the tested AOFs, Visuprime, Iodim, and Oftasteril were the most rapid and effective for ocular surface disinfection against the tested bacterial species. Conclusions: The obtained results can support the clinician’s choice of the most suitable AOF for the prevention and treatment of ophthalmic infections associated with surgery.

The effectiveness of using mesodiencephalic modulation in combination with ozone therapy in patients with peri-implantitis according to long-term results of the study

BACKGROUND: Evaluation of the clinical effectiveness of the use of various treatment regimens for peri-implantitis should take into account not only the immediate results achieved during treatment, but also the manifestations of the disease in the long-term period. AIM: Assessment of the effectiveness of the integrated use of mesodiencephalic modulation (MDM therapy) and ozone therapy in patients with dental peri-implantitis based on long-term results of the study. MATERIALS AND METHODS: The study was carried out with the participation of 116 patients with peri-implantitis of classes I and II according to S.A. Jovanovic. Using the fixed randomization method, all patients were divided into 4 groups based on the results of generating random numbers obtained using a computer program. Patients of the first group (control group, n=28) received standard dental therapy, including professional oral hygiene and local use of antiseptics. Patients of the second group (comparison group 1; n=29) received a course of ozone therapy in addition to standard dental therapy, for which the periimplant area was irrigated with ozonated saline solution with an ozone concentration of 2.5–5.5 μg/ml for 15 minutes. Patients of the third group (comparison group 2; n=30) received a course of MDM therapy in addition to standard dental therapy. In the fourth group (main group; n=29), patients, along with standard dental therapy, received a course of complex physiotherapy in the form of a combination of ozone and MDM therapy. Long-term results of complex therapy for peri-implantitis were assessed 6 and 12 months after the end of treatment. RESULTS: A comparative assessment of dental indices in the long-term period showed that the addition of SST with a course of physiotherapeutic effects, in general, is accompanied by the preservation of the effect achieved after the end of treatment. At the same time, the best results were noted in the main group with the combined use of ozone and MDM therapy. Changes in the osseointegration index also indicated the preservation of the values achieved after the end of therapy, and in the main group a significant increase in this parameter was observed, which indicated additional activation of osseointegration processes under the influence of the physiotherapeutic complex. CONCLUSION: The results of the performed follow-up study convincingly prove the advantages of the additional use of therapeutic physical factors (MDM therapy, ozone therapy and their combination).

Prevalence of qacEΔ1, qacE, oqxA, oqxB, acrA, cepA and zitB genes among multidrug-resistant Klebsiella pneumoniae isolated in a cardiac hospital

Background. Infections caused by multidrug-resistant (MDR) Klebsiella pneumoniae are the leading cause of mortality worldwide. The widespread use of disinfectants and antiseptics has caused the emergence of K. pneumoniae with reduced sensitivity to them, which, in combination with MDR, can pose a significant epidemiological threat. The aim of the study was to assess the prevalence of efflux pump and transporter genes associated with biocide resistance and their association with antibiotic resistance among K. pneumoniae isolated in a cardiac surgical hospital. Materials and methods. K. pneumoniae isolates (n = 50) from the patients and medical equipment were tested by polymerase chain reaction for the presence of genes of 4 types of efflux pumps (qacEΔ1, qacE, oqxA, oqxB, acrA) and 2 transporters involved in the outflow of cations (cepA) and zinc ions (zitB). Spearman's rank correlation test was used to assess the strength of the association between the efflux pumps, beta-lactamase genes and mobile genetic elements. Results. The occurrence of K. pneumoniae containing qacEΔ1, qacE, oqxA, oqxB, acrA, cepA and zitB was high: 54, 62, 100, 84, 100, 72 и 96% respectively. K. pneumoniae with a combination of all the studied pumps was most often detected (32%), and these isolates were MDR in 100% of cases. The qacE, qacEΔ1 genes were closely associated with resistance to cephalosporins, carbapenems, fluoroquinolones, carbapenemase genes, and integrons. The results of the study showed that the genes of various efflux pumps associated with biocide resistance and their combinations were widely represented among the clinical isolates of MDR K. pneumoniae. Conclusion. The high prevalence of efflux pump genes associated with resistance to quaternary ammonium compounds, chlorhexidine and zinc salts and their significant association with antibiotic resistance in nosocomial K. pneumoniae underlines the importance of further studying the mechanisms of cross-resistance to biocides to improve methods of combating MDR nosocomial pathogens.

Building a multiple regression model for a personalized prediction of the efficacy of combined physiotherapy for peri-implantitis

Purpose of the study. To identify predictors of the effectiveness of personalized use of mesodiencephalic modulation in combination with ozone therapy in patients with inflammatory complications after dental implantation. Materials and methods. The study was carried out with the participation of 58 patients with peri-implantitis of classes I and II according to S. A. Jovanovic. Using a fixed randomization method, all patients were divided into 2 groups. The first (control group, 28 patients) received standard dental therapy, including professional oral hygiene and local use of antiseptics. The second (main group, 29 patients) additionally received courses of ozone therapy and mesodiencephalic modulation. Assessment of clinical effectiveness in the selected groups included the determination of dental indices and implant stability coefficient. The quality of life of patients was assessed using the OHIP-14 questionnaire in the Russian version. Additionally, microcirculation parameters in the peri-implant zone and markers of oxidative stress and cytokine profile were determined. Results. A clear advantage of combined physiotherapy over the standard method of treating peri-implantitis has been established, while the dynamics of some laboratory parameters characterizing pathological reactions were expressed to the maximum extent. Correlation analysis confirmed that these parameters can act as predictors of the effectiveness of combined physiotherapy, which was confirmed by the results of multiple regression analysis. It was revealed that the papillomarginal alveolar index can be recommended as an optimal independent variable in the development of new methods for treating complications after dental implantation. Conclusion. The results of constructing a multiple regression model made it possible to determine a cluster of predictor biomarkers in the form of blood levels of TNF-α, IL-1β, MDA, as well as microcirculation indicators and the rate of O2 consumption in the peri-implant zone, the identification of which in the initial state of patients with peri-implantitis allows us to assess the severity of the expected clinical effect of complex course use of mesodiencephalic modulation and ozone therapy.

Clinical and economic assessment of using topical bacterial lysate Imudon® for the treatment and prevention of acute upper respiratory tract infections in children

Objective: pharmacoeconomic analysis of the feasibility of using topical bacterial lysate Imudon® for the treatment and prevention of acute upper respiratory tract infections in the pediatric population in comparison with other medicines belonging to the class of topical antiseptics.Material and methods. For the population calculated on the basis of Rosstat data, taking into account the Russian clinical recommendations "Acute respiratory viral infection (ARVI)" and "Acute tonsillitis and pharyngitis (acute tonsillopharyngitis)", the direct medical costs of medical care were determined. The cost of basic therapy of 1 case of acute respiratory infection (ARI) with symptoms of pharyngitis was calculated for two variants of clinical course: favorable (when ARI proceeds without complications and the patient does not need to be prescribed antibacterial drugs), and unfavorable (when confirmed bacterial infection joins and antibiotics are required). The indirect costs of child care are associated with lost gross domestic product (GDP). In estimating the GDP shortfall, it was assumed that the parent does not contribute to the country’s GDP during the entire childcare period.Results. GDP per capita for 2022 amounted to 2853.13 rubles per day. Thus, with a favorable course of the disease, indirect costs will be 19,972 rubles, and with an unfavorable course – 39,944 rubles. The total costs of the healthcare system and the state for 1 ARI patient are 32,192 rubles in case of favorable course and 71,644 rubles in case of unfavorable course. Imudon® administration allows reducing direct costs of parents for purchase of medicines for treatment of 1 ARI case by 23.6% compared to the therapeutic strategy associated with the use of local antiseptics.Conclusion. For the first time in Russian economic conditions, the use of Imudon® for the treatment and prevention of acute upper respiratory tract infections in children was evaluated. Its use from the first ARI symptoms allows refusing the use of local antiseptics, shortens the duration of the disease symptoms, and reduces the need for antibiotics, i.e. is feasibleable compared to local antiseptics.

Risk of COVID­-19 Infection among Employees of a Large Anti­tuberculosis Institution in Moscow: Survey Results

Relevance. Studying the experience of working under the conditions of COVID-19 allows us to more effectively assess the functioning of anti-epidemic measures in the event of the occurrence or threat of new pandemics, including those caused by new pathogens. The risk of contracting COVID-19 among employees of medical organizations is higher compared to the rest of the population of the metropolis, which determines the need to develop additional measures in medical organizations to protect workers. Timely assessment of risks and preventive measures during a pandemic allow building a system to protect medical institutions from various biological threats when providing medical care. Aim. Assessment of the risks of contracting COVID-19 among employees of a large anti-tuberculosis medical organization in a metropolis. Materials & Methods. A survey of employees of a large anti-tuberculosis medical organization in Moscow was conducted. The survey was conducted on 46 key questions of epidemiological history, compliance with the requirements of the sanitary and anti-epidemic regime, alleged sources of infection, prognostic risks of the occurrence and course of COVID-19. During the period from August 1 to October 1, 2022, 1225 employees of the institution were surveyed (43.8% of the total number). The survey was conducted on a voluntary basis and was anonymous. When answering questions, participants provided information about demographic factors (age, gender), place of actual residence, the fact of contracting a new coronavirus infection, frequency of laboratory testing for SARS-CoV-2, immunization against COVID-19, possible places of contact with patients with COVID-19, the use of personal protective equipment (PPE) at home and at work, the regular use of skin antiseptics, as well as other information that allowed us to establish the risks of infection of workers at home and at work. To assess the risks of infection, respondents were divided into two groups depending on the presence of a positive test for SARS-CoV-2 (group I) or its absence (group II) as of October 1, 2022. The material for testing was nasal/oropharyngeal swabs. The research of employees was carried out on the basis of the laboratory of the anti-tuberculosis medical organization, as well as in other accredited laboratories of the metropolis using the molecular genetic method, and since February 2022 also using the express method that determines the SARS-CoV-2 antigen. Results. Among the survey participants and according to the questionnaire data, 797 employees suffered from the new coronavirus infection COVID-19, and 138 (17.3%) of them had repeated cases of the disease. Factors that increase the risk of COVID-19 among personnel of anti-tuberculosis medical organizations directly involved in the fight against the new coronavirus infection have been identified. The results of the study demonstrated that important factors influencing the incidence of workers were the frequency of examination for COVID-19, the regular use of skin antiseptics, contact with sources of infection, the use of glasses for vision correction, the use of public transport and eating at work. Conclusion. The need to study the risks of contracting COVID-19 among employees of medical organization and, based on them, develop a set of additional anti-epidemic protection measures was confirmed.

Hidradenitis suppurativa: review of international clinical guidelines for the diagnosis and treatment of the disease

Background. Hidradenitis suppurativa hidradenitis is a chronic recurrent inflammatory skin disease that develops after puberty and is characterized by the appearance of recurrent painful nodes, abscesses, the formation of fistula passages and scars on skin areas rich in apocrine sweat glands. Treatment of purulent hidradenitis is aimed at suppressing inflammation, relieving pain, preventing the formation of fistulas and scars. The objectives of this review. Summarize the information in the published international clinical guidelines for the diagnosis and treatment of purulent hidradenitis, their comprehensive assessment and comparison with each other. Methods. In the period from December 2022 to February 2023, scientific articles were searched in the PubMed database of the National Center for Biotechnological Information. Inclusion criteria: scientific articles in English, without date restrictions; interdisciplinary publications of specialists in which dermatovenereologists participated. Results. The analysis of the existing relevant international clinical recommendations for the diagnosis and treatment of purulent hidradenitis indicates the absence of specific treatment schemes and algorithms, criteria for evaluating the effectiveness of therapy. In the treatment of purulent hidradenitis, the use of external keratolytics, antiseptics and antibiotics is recommended. Among systemic drugs, antibiotics, retinoids, immunosuppressive agents, hormonal drugs are used. The highest therapeutic efficacy in patients with purulent hidradenitis was shown by genetically engineered drugs that inhibit TNF-α and IL-17A. Conclusions. Patients with purulent hidradenitis require various treatment approaches, including a variety of surgical interventions, depending on the stage, severity, prescription of the disease and the general condition of the patient. The basic principle is the individual selection of the treatment method for a particular patient. In this regard, there is a need to develop domestic clinical guidelines for the management of patients with purulent hidradenitis.

Characterization of antibiotic and disinfectant susceptibility in biofilm-forming Acinetobacter baumannii: A focus on environmental isolates.

The clinical role of Acinetobacter baumannii has been highlighted in numerous infectious syndromes with a high mortality rate, due to the high prevalence of multidrug-resistant (MDR) isolates. The treatment and eradication of this pathogen is hindered by biofilm-formation, providing protection from noxious environmental factors and antimicrobials. The aim of this study was to assess the antibiotic susceptibility, antiseptic susceptibility and biofilm-forming capacity using phenotypic methods in environmental A.baumannii isolates. One hundred and fourteen (n = 114) isolates were collected, originating from various environmental sources and geographical regions. Antimicrobial susceptibility testing was carried out using the disk diffusion method, while antiseptic susceptibility was performed using the agar dilution method. Determination of biofilm-forming capacity was carried out using a microtiter-plate based method. Resistance in environmental A. baumannii isolates were highest for ciprofloxacin (64.03%, n = 73), levofloxacin (62.18%, n = 71) and trimethoprim-sulfamethoxazole (61.40%, n = 70), while lowest for colistin (1.75%, n= 2). Efflux pump overexpression was seen in 48.25% of isolates (n = 55), 49.12% (n = 56) were classified as MDR. 6.14% (n = 7), 9.65% (n = 11), 24.65% (n = 28) and 59.65% (n = 68) of isolates were non-biofilm producers, weak, medium, and strong biofilm producers, respectively. No significant differences were observed between non-MDR vs. MDR isolates regarding their distribution of biofilm-producers (P = 0.655). The MIC ranges for the tested antiseptics were as follows: benzalkonium chloride 16-128 μg mL-1, chlorhexidine digluconate 4-128 μg mL-1, formaldehyde 64-256 μg mL-1 and triclosan 2-16 μg mL-1, respectively. The conscientious use of antiseptics, together with periodic surveillance, is essential to curb the spread of these bacteria, and to maintain current infection prevention capabilities.

The influence of cationic antiseptics on the processes of light energy conversion in various photosynthetic pigment-protein complexes.

The widespread use of disinfectants and antiseptics, and consequently their release into the environment, determines the relevance of studying their potential impact on the main producers of organic matter on the planet-photosynthetic organisms. The review examines the effects of some biguanides and quaternary ammonium compounds, octenidine, miramistin, chlorhexidine, and picloxidine, on the functioning of the photosynthetic apparatus of various organisms (Strakhovskaya etal. in Photosynth Res 147:197-209, 2021; Knox etal. in Photosynth Res 153:103, 2022; Paschenko et al. in Photosynth Res 155:93-105, 2023a, Photosynth Res 2023b). A common feature of these antiseptics is the combination of hydrophobic and hydrophilic regions in the molecules, the latter carrying a positive charge(s). The comparison of the results obtained with intact bacterial membrane vesicles (chromatophores) and purified pigment-protein complexes (photosystem II and I) of oxygenic organisms allows us to draw conclusions about the mechanisms of the cationic antiseptic action on the functional properties of the components of the photosynthetic apparatus.

On the use of antiseptics in clinical practice

To address the spread of pathogenic agents and minimize the risk of infection, it is essential to apply measures for proper antiseptic treatment of the surgical site prior to an invasive medical procedure to effectively reduce the incidence of surgical site infection and associated complications. Knowledge of the concepts and standards for the use of antiseptic and disinfectant agents helps health care providers to effectively prevent the spread of infectious agents and provides a scientific basis for their rational use. Research on the mechanisms of action of antiseptics has not only scientific but also practical importance for nurses and clinicians, which is related to more effective use of these drugs in professional activities and potential development of new promising compounds and their combinations.

Interaction of Selected Commercial Antiseptics with Natural Products against Methicillin-Resistant Staphylococcus aureus Strain

The carriage of methicillin-resistant S. aureus (MRSA) strains may determine the subsequent occurrence of infection, which mainly affects patients after surgeries. Therefore, its eradication with the use of antibiotics or antiseptics is a crucial method of preventing staphylococcal self-infections. The observed increase in bacterial resistance to known antibacterial substances poses a huge challenge to scientists. The aim of this study was to analyze the interaction of selected commercial antiseptics (Braunol, CITROclorex 2%, Microdacyn 60 Wound Care, Octenisept and Prontoderm Solution) with natural products (carvacrol, β-citronellol, geraniol, eugenol, farnesol, (-)-menthone, eucalyptol, limonene, linalyl acetate and trans-anethole) against the MRSA standard strain. The antistaphylococcal activity of commercial antiseptics in combination with natural products against MRSA was determined using the checkerboard method. The obtained results showed that most combinations decreased the MIC level of the commercial antiseptic and natural compounds. A statistically significant decrease in the MIC value of the antiseptic and natural constituent was observed for the Braunol–β-citronellol combination. Such a significant decrease in the MIC value of the natural compound against the analyzed strain was also detected for the Octenisept–β-citronellol and Prontoderm Solution–β-citronellol combinations. The interaction analysis showed that out of all 20 combinations of individual antiseptics with substances of natural origin, two combinations showed a synergistic effect (Braunol–β-citronellol, Braunol–carvacrol), and three combinations showed an additive effect (Braunol–eugenol, Braunol–geraniol, Prontoderm Solution–β-citronellol). The use of Braunol in combination with β-citronellol or carvacrol may become an alternative method of eradicating MRSA strains. However, further studies are needed to determine the toxicity of the analyzed combinations.

Introducing the model of repeated exposure of skin to antiseptics: Randomised pilot trial.

Intensified hand hygiene measures were recommended for preventing the spread of SARS-CoV-2. However, these measures can lead to skin damage and the development of hand eczema, particularly among health professionals. This pilot study aimed to evaluate the effects of repeated antiseptic use on healthy skin under controlled conditions and to assess the emollient use. Twelve healthy volunteers (nine females, age = 22.3 ± 2.8 years (mean ± SD), Fitzpatrick phototypes II and III) with no skin diseases were recruited. Antiseptic was applied daily for 3 weeks on the volar sides of forearms. Emollient cream was also applied daily. Skin assessments were performed using non-invasive methods (transepidermal water loss-TEWL, skin hydration, erythema and melanin content). Prolonged antiseptic use increased TEWL, decreased hydration and elevated erythema and melanin levels. Emollient cream significantly reduced TEWL and improved hydration on antiseptic-treated sites, and also enhanced hydration on intact skin. Prolonged use of antiseptics can have adverse effects on the skin, including barrier disruption and inflammation. Emollient showed promise in improving skin hydration and reducing the damage caused by antiseptics. Further research with a larger sample is needed to confirm these findings and assess emollient efficacy during frequent antiseptic use.

GC-MS Analysis and Study of the Antimicrobial Activity of Citrus paradisi, Citrus aurantifolia, and Citrus sinensis Peel Essential Oils as Hand Sanitizer.

In the setting of healthcare, the use of hand sanitizers and antiseptics for hand hygiene is of paramount importance to avoid transfer of pathogenic microorganism through hand and skin contact. There is an increasing interest in the incorporation of essential oils in hand sanitizer's formula to avoid the adverse effect of conventional hand sanitizers on health. This study aimed to detect the chemical constituents of citrus peel essential oils and study their antimicrobial activity compared with commercial hand sanitizers. The qualitative and quantitative analysis of the hydrodistillated essential oils of peels of grapefruit (Citrus paradisi), lime (Citrus aurantifolia), and orange (Citrus sinensis) were carried out using gas chromatography mass spectroscopy. The disc diffusion method was used to screen the antibacterial activity of the essential oils against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Staphylococcus aureus, and Candida albicans compared with a 78% alcohol-based commercial hand sanitizer. The antimicrobial testing results were statistically analyzed. The highest yield percentage of the obtained essential oils was 1.09% obtained by orange oil. The GC-MS analysis indicated that monoterpene and sesquiterpene hydrocarbons occupied the largest portion of the chemical composition of the three essential oils with D-limonene as the most predominant component. All essential oils showed activity against all tested organisms. Lime essential oil showed comparable antimicrobial activity relative to the commercial 78% alcohol hand sanitizer. In conclusion, essential oils obtained from citrus fruit peel represent a rich source of compounds possessing antimicrobial properties and could be an alternative to synthetic antimicrobial agents.

CrabCare: Innovative Chitosan Biopolymer-Based Ointment from Crab Shell Waste by Utiling

Wounds are a common problem that requires effective care to prevent infection and accelerate the healing process. The use of conventional antiseptics is often unsatisfactory due to the long time required. Therefore, the innovation of using chitosan from crab shell waste as a base material for ointment becomes the focus of this research. This study aims to develop a chitosan-based ointment that can accelerate the wound healing process more efficiently. The research results show that the ointment developed from crab shells through the deproteinization process can significantly accelerate wound healing. Chitosan extracted from crab shells has unique properties such as bioactivity, biodegradability, and biocompatibility, which are effective in inhibiting bacterial and pathogen growth, as well as stimulating granulation tissue formation. Thus, the CrabCare ointment made from crab shell chitosan offers a promising alternative as a therapeutic agent for more effective and environmentally friendly wound care. In conclusion, the development of CrabCare provides new opportunities in wound therapy through innovative and sustainable means.

In Vitro Effect of Eucalyptus Essential Oils and Antiseptics (Chlorhexidine Gluconate and Povidone-Iodine) against Bacterial Isolates from Equine Wounds.

Considering the increasing antibiotics resistance, there has been a propensity to replace them with antiseptics when it comes to wound management and treatment. Nevertheless, in recent years, there have been reports regarding resistance to antiseptics by some bacterial strains. There is also concern about the environmental impact of these substances. The aim of this study was to compare the antimicrobial efficacy of antiseptics and eucalyptus essential oils on bacterial strains from horse's wounds. We used twelve Escherichia coli, eight Staphylococcus aureus, two Staphylococcus pseudintermedius, one Staphylococcus vitulinus and one Staphylococcus saprophyticus strains from equine wounds. The effect of Eucalyptus radiata essential oil, Eucalyptus globulus essential oil, povidone-iodine and chlorhexidine gluconate against the isolated strains was evaluated applying the Kirby-Baüer method. Regarding the Escherichia coli strains, E. radiata and the mixture of E. radiata and E. globulus had a better inhibitory effect than antiseptics. E. globulus had a better effect against most Staphylococcus spp. compared to E. radiata. For both Gram-negative and Gram-positive strains tested, chlorhexidine gluconate had a better inhibitory effect than povidone-iodine. The antibacterial efficacy of essential oils highlights their potential to substitute or complement the use of antiseptics and so reduce resistance to antiseptics.

Optimal effective concentration combinations (OPECCs) for binary application of membrane-targeting antiseptics and TMPyP-mediated antimicrobial photodynamic therapy

The widespread occurrence of multi-resistant bacteria is a health problem of global dimension. Infections caused by multi-resistant pathogens are difficult to treat and often associated with high mortality. Therefore, new treatment strategies are of interest, such as the use of differently acting antibacterial concepts. One of these new concepts is the use of antiseptics in combination with the antibacterial photodynamic therapy (aPDT). Currently, no method has yet been established as a standard procedure for investigating combined effects and evaluating them in a generally valid and unambiguous manner. The focus of this study was on how cationic antiseptics benzalkonium chloride (BAC) and chlorhexidine digluconate (CHX) behave in a combined application with aPDT using the photosensitizer TMPyP. For this purpose, BAC and CHX were applied in combination with the aPDT using TMPyP in non-lethal concentrations to the three bacteria Escherichia coli, Staphylococcus aureus, and Enterococcus faecalis. The results of the combination experiments with sublethal concentrations of BAC or CHX with the aPDT showed that the binary application had a lethal effect. Irrespective of the bacteria, the reduction in concentrations in OPECC, compared to individual concentrations, was more than 50% for TMPyP, 23–40% for BAC, and 18–43% for CHX. Furthermore, the optimal effective concentration combinations (OPECCs) could be determined. The latter showed that the combined application allowed the reduction of both concentrations compared to the single application.

The influence of therapeutic physical factors on the dynamics of the clinical condition and quality of life of patients with peri-implantitis

BACKGROUND: The use of dental implants, being the gold standard in the dental rehabilitation of edentulous patients, is often accompanied by the development of inflammatory complications leading to loss of the implant. Common methods in dental practice for the prevention and treatment of peri-implantitis based on local antiseptic and antibacterial drugs and periodic measures of professional oral hygiene are limited and do not contribute to solving the existing problem.
 AIM: Assessment of the clinical effectiveness and dynamics of the quality of life of patients with peri-implantitis during complex therapy using mesodiencephalic modulation, ozone therapy and their combination.
 MATERIALS AND METHODS: the study was carried out with the participation of 116 patients with peri-implantitis of classes I and II according to S.A. Jovanovic. All patients were divided into 4 groups using simple fixed randomization. The first group (control; n=28) received standard dental therapy, including professional oral hygiene and local use of antiseptics. In the second group (comparison group 1; n=29), in addition to standard therapy, a course of ozone therapy was performed, for which the peri-implant area was irrigated with ozonated saline solution with an ozone concentration of 2.5–5.5 μg/ml for 15 minutes. In the third group (comparison group 2; n=30), standard treatment was supplemented with a course of MDM therapy. Patients of the fourth group (main group; n=29), along with standard treatment, received complex treatment, including a course of ozone therapy and MDM therapy. The results were assessed after the end of therapy based on the dynamics of dental indices, the osseointegration parameter of the implant and the level of quality of life of the patients.
 RESULTS: A course of use of various treatment regimens was accompanied by a significant improvement in the clinical and dental status of patients, but the severity of the effect was different in the groups. To a lesser extent, positive changes were identified in the control group. Additional course use of therapeutic physical factors (ozone and MDM therapy) was accompanied by a significant increase in regression of complaints and improvement in objective indicators of dental status. Achieving the maximum positive result was clearly evident in the main group with the complex use of the studied physiotherapeutic factors. The use of the correlation adaptometry method to assess the clinical effectiveness of various treatment regimens for peri-implantitis made it possible to establish that under the influence of the integrated use of ozone and MDM therapy, the most pronounced decrease in mutual correlations between the studied parameters is observed. This indicates an increase in functional reserves and adaptive capabilities of patients in the main group.
 CONCLUSION: the results obtained convincingly prove the high effectiveness of the complex use of therapeutic physical factors in the implementation of a therapeutic strategy aimed at eliminating inflammatory manifestations in the area of dental implants and improving the quality of life of patients.

Contemporary Trends in Antiseptic Pocket Rinse in Primary Breast Implant Surgery.

Broad evidence supports the use of antiseptic pocket rinse in breast implant surgery to minimize the risk of capsular contracture or other complications. However, there is limited consensus or standardization of antiseptic rinse in practice. In this preliminary study, we sought to determine contemporary trends in antiseptic rinse use in primary breast implant surgery based on Australian Breast Device Registry (ABDR) data, and whether these trends align with the suggestions of the 14-point plan. This further served as a feasibility study for subsequent comparison of antiseptic rinse effects on clinical outcomes. Institutional ethics approval was obtained and national ABDR data for primary breast implant surgery from 2015 to 2020 were analyzed for the use and type of antiseptic rinse. The surgeon-reported data were homogenized with regard to terminology and categorized by major trends, and the literature was reviewed. We analyzed data for 37,143 patients, totaling 73,935 primary implants. Antiseptic rinse included povidone-iodine (PVP-I) in 35,859 (48.5%), no antiseptic use in 24,216 (32.8%), other concentrations of PVP-I in 4200 (5.7%), and Betadine triple antibiotic in 1831 implants (2.5%). Multiple other antiseptic permutations were noted in 7004 implants (9.5%). The majority (56.7%) of Australian practitioners utilize previously described antiseptic pocket irrigation solutions that align with the 14-point plan. A third (32.8%), however, do not record any antiseptic pocket irrigation. These findings will permit a subsequent (ongoing) study of outcomes comparing PVP-I pocket rinse to no antiseptic pocket rinse, which will likely constitute the largest study of its kind.

Efficacy Assessment of Some Commonly used Disinfectants against Multidrug Resistant Bacterial Isolates from a Tertiary Healthcare Facility in Benin City, Nigeria

The ever-rising numbers of multidrug resistant, MDR bacteria in healthcare facilities globally has correspondingly led to a rapid escalation in the use of disinfectants, antiseptics or biocides which reached unprecedented levels during the COVID-19 pandemic. This has also elicited grave apprehension about the development of resistance to disinfectants. This study was conducted to evaluate the effectiveness of some regularly used disinfectants in the study population. Five brands of disinfectants were obtained and diluted in sterile 300 ppm calcium carbonatenutrient broth to their respective minimum inhibitory concentrations, MICs to which were exposed broth cultures of MDR organisms for 2 min before sampling onto nutrient agar plates in replicates. Further samples were taken NEWPORT INTERNATIONAL JOURNAL OF SCIENTIFIC AND EXPERIMENTAL SCIENCES (NIJSES) Volume 4 Issue 1 2023 ©NIJSES Publications Open Access ONLINE ISSN: 2992-5819 PRINT ISSN: 2992-6149 Onemu et al., 2023 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited Page | 49 from the mixture at 4, 6, 8, … 30 min intervals. One set of plates were incubated at 37oC and the other at RT for 48 h and 96 h respectively and examined for growth. Sodium hypochlorite, phenol and glutaraldehyde - all proved to be effective with the fastest time kill kinetics at 2.5 min. The longest time kill kinetics were demonstrated by cetrimide and cresol against Pseudomonas aeruginosa at 16 min and 13 min respectively, thus affirming Pseudomonas aeruginosa as the most resistant organism. This study infers of a reassurance in the continued effectiveness of the disinfectants under review in the phase of the ever-soaring tide of MDR organisms in healthcare settings. Keywords: Disinfectants, usage, effectiveness, MDR-organisms

Chemical Corneal Burn After Short Exposure to Alcohol-Containing Chlorhexidine Antiseptic

Chlorhexidine is used routinely for asepsis in craniofacial surgeries. A solution containing a lower concentration of chlorhexidine diluted with alcohol has been developed to decrease chlorhexidine-related side effects. Herein, we report a case of chemical corneal burn caused by hexitanol solution (2% chlorhexidine + 72% ethanol) in a patient after undergoing closed reduction for nasal fracture under general anesthesia. Although the presumptive exposure time of the cornea was short, slit-lamp examination revealed epithelial defects. The patient received conservative care with extensive saline irrigation and conservative treatment with 0.3% gatifloxacin, 1% prednisolone, and carbomer eye drops. Among the various antiseptic solutions, ethanol markedly decreases cell viability in a concentration-dependent manner by inducing cell lysis, even after short exposure. Moreover, chlorhexidine induces corneal toxicity, necessitating corneal transplantation. Therefore, surgeons should be aware of the complications associated with the use of chlorhexidine or alcohol-containing antiseptics and the use povidone for its low ocular toxicity.