Safety and Pharmacokinetics of Dioxidin, Solution for Topical and External Use, 0.25 mg/ml and Dioxidin, Solution for Infusion and External Use, 5 mg/ml in Healthy Volunteers

Study Overview
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Brief Summary
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The study aimed for: To study the safety of the drug Dioxidin, solution for topical and external use; To determine the concentrations of the active substance of the studied drugs Dioxidin, solution for topical and external use, and Dioxidin, solution for infusion and external use in discrete time intervals; To study pharmacokinetics of the drug Dioxidin, solution for topical and external application; To determine the absolute bioavailability of the drug Dioxidine, solution for topical and external use.

Official Title
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Open Randomized Comparative Crossover Study of the Safety and Pharmacokinetics of Dioxidin, Solution for Topical and External Use, 0.25 mg/ml and Dioxidin, Solution for Infusion and External Use, 5 mg/ml in Healthy Volunteers

Conditions
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Infections

Intervention / Treatment
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* Drug: Hydroxymethylquinoxalindioxyde


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Voluntary and handwritten informed consent form signed by a healthy volunteer to participate in the study before any of the study procedures Age from 18 to 45 years (inclusive) Verified diagnosis healthy by standard clinical, laboratory, instrumental methods of examination Blood pressure level: systolic from 100 to 130 mmHg, diastolic from 60 to 90 mmHg (inclusive) Heart rate 60 to 90 beats per minute (inclusive) Body mass index (BMI) is 18.5 ≤ BMI ≤ 30.0 kg/m², with a body weight of ≥55 kg for men and ≥45 kg for women Volunteers must behave appropriately, coherent speech must be observed For women of childbearing potential, negative pregnancy test; consent of volunteers to either abstain from sexual intercourse or use a dual barrier method of contraception for the duration of study participation, beginning with the Screening Period, and for 3 weeks after study termination Ability to follow the daily routine and dietary regimen of the study protocol Ability to attend all scheduled appointments and stay at the Research Center for all Study Periods Exclusion Criteria: A history of allergic reactions A history of drug intolerance to the active and/or excipients in the study medications Inability to successfully perform oropharyngeal rinse test Any chronic illnesses History of gastrointestinal surgery (except appendectomy) Acute infectious diseases less than 4 weeks prior to screening Taking medications that significantly affect hemodynamics and medications that affect liver function (barbiturates, omeprazole, cimetidine, etc.) less than 2 months before screening Regularly taking medications less than 2 weeks before screening and taking a single medication 7 days before screening Donating blood (450 mL of blood or plasma or more) less than 3 months before screening For women, the last intake of oral contraceptives at least 2 months prior to screening Pregnant and lactating women, and women and men of childbearing age who cannot or do not abstain from sexual intercourse or use a dual barrier method of contraception for the duration of study participation, beginning with the Screening Period, and for 3 weeks after the study ends Participation in another clinical trial less than 3 months before screening or concurrently with this study Taking more than 10 units of alcohol (1 unit of alcohol is equivalent to 330 ml of beer, 150 ml of wine, or 40 ml of spirits) in the week in the last month before inclusion in the study or anamnestic evidence of alcoholism, drug abuse, or medication abuse Smoking more than 10 cigarettes per day currently, or a history of smoking this number of cigarettes in the 6 months prior to screening A positive blood test for HIV, syphilis, hepatitis B/C A positive urine test for narcotics and powerful drugs Positive breath alcohol test Positive COVID-19 test Scheduled inpatient hospitalization during the study for any reason other than hospitalization as required by this protocol Inability or inability to meet the requirements of the protocol, including for physical, mental or social reasons, in the opinion of the Researcher Work/study regimen that is likely to make it impossible for the volunteer to complete the study and/or comply with the schedule of procedures Other conditions that, in the opinion of the Researcher, prevent the inclusion of the volunteer in the study

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: ABCD-sequence<br>Hydroxymethylquinoxalindioxyde administration in a sequence A-B-C-D during the corresponding study periods 1, 2, 3, and 4 | Drug: Hydroxymethylquinoxalindioxyde<br>* Dioxidin (Hydroxymethylquinoxalindioxyde), solution for topical and external use, 0.25 mg/ml, applied as: A - single rinsing of the oropharynx with 15.0 ml of the drug solution for at least 30 seconds B - single irrigation of the oropharynx by spraying the preparation 4 times with a spray nozzle C - irrigation of the skin on the back by spraying the preparation 4 times from a distance of 10 cm on 1% of the body surface using a spray nozzle and exposing the solution for 30 minutes or D - Dioxidin (Hydroxymethylquinoxalindioxyde), solution for infusion and external application, 5 mg/ml, single intravenous 5 mg/ml in 1 ml<br>* Other names: Dioxidin;|
| Other: BCDA-sequence<br>Hydroxymethylquinoxalindioxyde administration in a sequence B-C-D-A during the corresponding study periods 1, 2, 3, and 4 | Drug: Hydroxymethylquinoxalindioxyde<br>* Dioxidin (Hydroxymethylquinoxalindioxyde), solution for topical and external use, 0.25 mg/ml, applied as: A - single rinsing of the oropharynx with 15.0 ml of the drug solution for at least 30 seconds B - single irrigation of the oropharynx by spraying the preparation 4 times with a spray nozzle C - irrigation of the skin on the back by spraying the preparation 4 times from a distance of 10 cm on 1% of the body surface using a spray nozzle and exposing the solution for 30 minutes or D - Dioxidin (Hydroxymethylquinoxalindioxyde), solution for infusion and external application, 5 mg/ml, single intravenous 5 mg/ml in 1 ml<br>* Other names: Dioxidin;|
| Other: CDAB-sequence<br>Hydroxymethylquinoxalindioxyde administration in a sequence C-D-A-B during the corresponding study periods 1, 2, 3, and 4 | Drug: Hydroxymethylquinoxalindioxyde<br>* Dioxidin (Hydroxymethylquinoxalindioxyde), solution for topical and external use, 0.25 mg/ml, applied as: A - single rinsing of the oropharynx with 15.0 ml of the drug solution for at least 30 seconds B - single irrigation of the oropharynx by spraying the preparation 4 times with a spray nozzle C - irrigation of the skin on the back by spraying the preparation 4 times from a distance of 10 cm on 1% of the body surface using a spray nozzle and exposing the solution for 30 minutes or D - Dioxidin (Hydroxymethylquinoxalindioxyde), solution for infusion and external application, 5 mg/ml, single intravenous 5 mg/ml in 1 ml<br>* Other names: Dioxidin;|
| Other: DABC-sequence<br>Hydroxymethylquinoxalindioxyde administration in a sequence D-A-B-C during the corresponding study periods 1, 2, 3, and 4 | Drug: Hydroxymethylquinoxalindioxyde<br>* Dioxidin (Hydroxymethylquinoxalindioxyde), solution for topical and external use, 0.25 mg/ml, applied as: A - single rinsing of the oropharynx with 15.0 ml of the drug solution for at least 30 seconds B - single irrigation of the oropharynx by spraying the preparation 4 times with a spray nozzle C - irrigation of the skin on the back by spraying the preparation 4 times from a distance of 10 cm on 1% of the body surface using a spray nozzle and exposing the solution for 30 minutes or D - Dioxidin (Hydroxymethylquinoxalindioxyde), solution for infusion and external application, 5 mg/ml, single intravenous 5 mg/ml in 1 ml<br>* Other names: Dioxidin;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pharmacokinetics - Cmax | Maximum plasma concentration (Cmax) of Hydroxymethylquinoxalindioxyde (HMQD) | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - tmax | Time to reach Cmax (tmax) of HMQD | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - tlag | Time from administration to first accessible concentration of HMQD | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - Vd | Volume of distribution of HMQD | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - AUC0-t | Area under the plasma concentration-time curve from time 0 to t (AUC0-t) of HMQD | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - AUC0-inf | Area under the plasma concentration-time curve from time 0 to infinity (AUC0-inf) of HMQD | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - AUCextr | Extrapolated AUC of HMQD, defined as (AUC0-inf - AUC0-t)/AUC0-inf | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - kel | Elimination constant (kel) of HMQD | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - t1/2 | Elimination half-life (t1/2) of HMQD | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 
| Pharmacokinetics - MRT | Mean residence time (MRT) of HMQD | From 0 to 16 hours after each drug application on day 1, 7, 14, and 21 of the study | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Safety and Tolerability: adverse event (AE) rate | Number and frequency of adverse events (AEs) or serious AEs (SAEs) | From the date of screening (and signing informed consent form) to the end of the study or to an early termination visit, whichever came first, assessed up to 43 days for each participant | 
| Safety and Tolerability: serious adverse event (AE) rate | Number and frequency of serious AEs (SAEs) | From the date of screening (and signing informed consent form) to the end of the study or to an early termination visit, whichever came first, assessed up to 43 days for each participant | 
| Safety and Tolerability: vital signs - systolic blood pressure (SBP) | SBP, mmHg | Screening, -10 h, -1 h, 2 h, 12, and 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: vital signs - diastolic blood pressure (DBP) | DBP, mmHg | Screening, -10 h, -1 h, 2 h, 12, and 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: vital signs - respiratory rate (RR) | RR, breaths per minute | Screening, -10 h, -1 h, 2 h, 12, and 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: vital signs - heart rate (HR) | HR, beats per minute | Screening, -10 h, -1 h, 2 h, 12, and 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: vital signs - body temperature | Body temperature, centigrade scale | Screening, -10 h, -1 h, 2 h, 12, and 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: physical examination results | Physical examination will follow the general rules of internal medicine: general examination, examination of mucous membranes and skin, including palpation of lymph nodes, evaluation of the musculoskeletal system, palpation, percussion, and auscultation of the main organ systems (cardiovascular, respiratory, digestive, and urinary systems) will be performed sequentially. | Screening, -10 h, -1 h, 2 h, and 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: 12-lead electrocardiogram (ECG) - heart rate | 12-lead ECG (I, II, III, aVR, aVL, aVF, V1-V6) taken while lying down: heart rate (beats per minute) | Screening and the end of the study or an early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: 12-lead electrocardiogram (ECG) - PQ interval | 12-lead ECG (I, II, III, aVR, aVL, aVF, V1-V6) taken while lying down: PQ interval (ms) | Screening and the end of the study or an early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: 12-lead electrocardiogram (ECG) - QRS complex | 12-lead ECG (I, II, III, aVR, aVL, aVF, V1-V6) taken while lying down: QRS complex (ms) | Screening and the end of the study or an early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: 12-lead electrocardiogram (ECG) - corrected QT interval (QTc) | 12-lead ECG (I, II, III, aVR, aVL, aVF, V1-V6) taken while lying down: QTc (ms) | Screening and the end of the study or an early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - hemoglobin | Hemoglobin, g/dL | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - red blood cells | Red blood cells, 10^6/uL | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - hematocrit | Hematocrit, % | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - platelets | Platelets, 10^3/uL | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - white blood cells | White blood cells, 10^3/uL | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and at the end of the study or at early termination visit within the time frame of the study | 
| Safety and Tolerability: complete blood count - erythrocyte sedimentation rate | Erythrocyte sedimentation rate, mm per hour | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - lymphocytes | Lymphocytes, % | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - eosinophils | Eosinophils, % | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - monocytes | Monocytes, % | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - basophils | Basophils, % | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: complete blood count - neutrophils | Neutrophils, % (segmented and stab) | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - glucose | Glucose in blood serum, mmol/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - total cholesterol | Total cholesterol in blood serum, mmol/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - total protein | Total protein in blood serum, g/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - total bilirubin | Total bilirubin in blood serum, umol/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - creatinine | Creatinine in blood serum, umol/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - alkaline phosphatase (ALP) | ALP in blood serum, U/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - alanine transaminase (ALT) | ALT in blood serum, U/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - aspartate transaminase (AST) | AST in blood serum, U/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - aldosterone | Aldosterone in blood serum, pmol/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: blood test results - cortisol | Cortisol in blood serum, pmol/L | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and at the end of the study or at early termination visit within the time frame of the study | 
| Safety and Tolerability: urinalysis - specific gravity | Specific gravity of the urine | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis - color | Color of the urine | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis - transparency | Transparency of the urine | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis - pH | pH of the urine | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis - protein | Protein in the urine (g/L) | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis - glucose | Glucose in the urine (mmol/L) | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis (microscopy) - red blood cells | Red blood cells in the urine (number in sight) | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis (microscopy) - white blood cells | White blood cells in the urine (number in sight) | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis (microscopy) - epithelial cells | Epithelial cells in the urine (number in sight) | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis (microscopy) - cylinders | Cylinders in the urine (number in sight) | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis (microscopy) - bacteria | Bacteria in the urine (number in sight) | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation | 
| Safety and Tolerability: urinalysis (microscopy) - mucus | Presence of mucus in the urine | Screening, 24 h after each drug application on day 1, 7, 14, and 21 of the study, and on the end-of-study visit or on the early termination visit, whichever came first, within 43 days of study participation |