Protocol summary

Study aim
Determining the effectiveness of silymaran in preventing vancomycin-induced nephrotoxicity in patients admitted to Namazi and Shahid Faqihi hospitals in Shiraz
Design
The clinical trial has two control and treatment groups, double-blind, randomized by permutation block method.
Settings and conduct
A multicenter, randomized, double-blind, placebo-controlled clinical trial in two educational medical centers in Shiraz including Namazi Hospital and Shahid Faqihi Hospital Preparing the placebo as the same as Livergol tablets regarding size, color, and shape The unawareness of the nursing staff about groups The unawareness of the physician and assistant researcher about groups
Participants/Inclusion and exclusion criteria
Patients referred to teaching hospitals who have been diagnosed with an indication for the use of systemic (injectable) vancomycin for at least 7 days. The patients are hemodynamically stable, willing to participate in the study, receiving vancomycin injection for at least 7 days, absence of hypersensitivity reaction following silymarin consumption, no confirmed history of acute kidney injury, no confirmed history of chronic kidney disease, no vancomycin use in the past 14 days, no simultaneous use of drugs or compounds with antioxidant effect, no simultaneous use of drugs with prominent nephrotoxicity, and oral tolerance to drugs
Intervention groups
The two treatment and control groups will be given vancomycin based on the treatment protocol. However, in the patients of the treatment group, silymarin tablets (Livergol) 140 mg three times a day will be given orally as long as vancomycin is prescribed.
Main outcome variables
Increase in serum creatinine level; Development of acute tubular necrosis (ATN); The change in oxidant and antioxidant markers in serum

General information

Reason for update
Acronym
IRCT registration information
IRCT registration number: IRCT20161010030246N6
Registration date: 2023-05-27, 1402/03/06
Registration timing: prospective

Last update: 2023-05-27, 1402/03/06
Update count: 0
Registration date
2023-05-27, 1402/03/06
Registrant information
Name
Iman Karimzadeh
Name of organization / entity
Shiraz University of Medical Sciences
Country
Iran (Islamic Republic of)
Phone
+98 71 3242 4128
Email address
karimzadee@sums.ac.ir
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2023-06-13, 1402/03/23
Expected recruitment end date
2023-12-14, 1402/09/23
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
Evaluating the effectiveness of silymarin in preventing vancomycin-induced nephrotoxicity in hospitalized patients
Public title
Evaluating the effectiveness of silymarin in preventing vancomycin nephrotoxicity
Purpose
Prevention
Inclusion/Exclusion criteria
Inclusion criteria:
Hemodynamic stability (mean arterial blood pressure above 70 mmHg and/or systolic blood pressure above 90 mmHg. Willingness to participate in the study Receiving vancomycin intravenously for at least 1 week with the maintenance dosage regimen of 30-45 mg/kg/day or 1-2 g twice a day. Notably, the vancomycin regimen is the same in both hospitals.
Exclusion criteria:
Confirmed history of acute kidney injury Confirmed history of chronic kidney disease Taking vancomycin within the last 14 days Taking silymarin orally at least during the past day Confirmed history of hypersensitivity reactions following oral consumption of silymarin Simultaneous use of agents with antioxidant activity such as vitamin C, vitamin E, vitamin A, melatonin Receiving drugs with high nephrotoxicity potential such as aminoglycosides, amphotericin b, colistin Oral intolerance to drugs
Age
From 18 years old
Gender
Both
Phase
3
Groups that have been masked
  • Participant
  • Care provider
  • Investigator
  • Data analyser
Sample size
Target sample size: 80
More than 1 sample in each individual
Number of samples in each individual: 40
Forty patients are in the intervention (Silymarin) and 40 patients in the control group (Placebo).
Randomization (investigator's opinion)
Randomized
Randomization description
Block randomization (quadruple blocks): All possible blocks are arranged as follows: block 1: ABAB block 2: AABB block 3: ABBA block 4: BBAA block 5: BABA block 6: BAAB. We need 20 blocks to select 80 people. We randomly select these blocks from the numbers 1 to 6. For example, number 6 is chosen as the first block and number 2 as the forth block. The people who enter the study are given B-A-A-B-A-A-B-B, respectively. Finally, group A receives placebo and group B receives silymarin.
Blinding (investigator's opinion)
Double blinded
Blinding description
The researcher does not know whether the drug he gives to the patient is a placebo or the original drug. On the other hand, the participant (patient) is also unaware of whether the drug given to him is a placebo or the original drug.
Placebo
Used
Assignment
Parallel
Other design features

Secondary Ids

empty

Ethics committees

1

Ethics committee
Name of ethics committee
Ethics Committee of Shiraz Medical Sciences
Street address
Research and Technology Vice-Chancellor of Shiraz University of Medical Sciences-Shiraz Zand Street-Central Building of Shiraz University of Medical Sciences-7th Floor-Research and Technology Vice-Chancellor
City
shiraz
Province
Fars
Postal code
7113451978
Approval date
2023-05-21, 1402/02/31
Ethics committee reference number
IR.SUMS.REC.1402.073

Health conditions studied

1

Description of health condition studied
Vancomycin-induced nephrotoxicity in hospitalized patients
ICD-10 code
N14
ICD-10 code description
Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions

Primary outcomes

1

Description
Vancomycin nephrotoxicity as an increase in serum creatinine by ≥ 0.3 mg/dl within 48 hrs or an increase in serum creatinine to ≥ 1.5 times baseline within the previous seven days
Timepoint
Sampling of urine and blood (5 ml) of patients will be done before starting the drug (day zero) and on days 1, 2, 3, 5, 7, 10, and 14 of vancomycin treatment
Method of measurement
Measurement of serum creatinine is done by using an autoanalyzer instrument.

2

Description
Acute tubular necrosis is defined as fractional excretion of sodium more than 2% in the absence of diuretic treatment.
Timepoint
Sampling of urine and blood (5 ml) of patients will be done before starting the drug (day zero) and on days 1, 2, 3, 5, 7, 10, and 14 of vancomycin
Method of measurement
Measurement of serum as well as urine creatinine along with serum as well as urine sodium is done by using an autoanalyzer instrument.

Secondary outcomes

1

Description
Serum level of malondialdehyde, total antioxidant capacity, and glutathione
Timepoint
At days 0 and 14 of vancomycin treatment
Method of measurement
Serum level of malondialdehyde, total antioxidant capacity, and glutathione are measured by the ELISA technique.

Intervention groups

1

Description
Intervention group: In this group, as long as vancomycin is received, silymarin tablets from the Gol Daru company (Livergol) are prescribed orally in the amount of 140 mg three times a day orally.
Category
Prevention

2

Description
Control group: In this group, along with vancomycin, placebo tablets 140 mg three times a day are given orally.
Category
Prevention

Recruitment centers

1

Recruitment center
Name of recruitment center
Namazi and Shahid Faqihi Hospital, Shiraz
Full name of responsible person
Iman Karimzadeh
Street address
Shiraz, Kilometer 5 of the Shiraz-Isfahan highway, karafarin Street, Faculty of Pharmacy
City
shiraz
Province
Fars
Postal code
7146864685
Phone
+98 71 3242 4127
Fax
+98 71 3242 4126
Email
karimzadee@sums.ac.ir

Sponsors / Funding sources

1

Sponsor
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Mohammad Hashem Hashempour
Street address
Shiraz, Karim Khan Zand St., next to Red Crescent
City
Shiraz
Province
Fars
Postal code
۷۱۳۴۸۱۴۳۳۶
Phone
+98 71 3235 7282
Email
hashempurm@sums.ac.ir
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Shiraz University of Medical Sciences
Proportion provided by this source
100
Public or private sector
Public
Domestic or foreign origin
Domestic
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
Academic

Person responsible for general inquiries

Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Iman Karimzadeh
Position
Associate Professor
Latest degree
Specialist
Other areas of specialty/work
Medical Pharmacy
Street address
Shiraz, Rokn Abad, Karafan St., Faculty of Pharmacy
City
shiraz
Province
Fars
Postal code
7146864685
Phone
+98 71 3242 4128
Email
karimzadee@sums.ac.ir

Person responsible for scientific inquiries

Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Iman Karimzadeh
Position
Associate Professor
Latest degree
Ph.D.
Other areas of specialty/work
Medical Pharmacy
Street address
Namazi Square, Namazi Hospital, Clinical Pharmacy Department Office
City
shiraz
Province
Fars
Postal code
1135171937
Phone
+98 71 3647 4326
Email
karimzadee@sums.ac.ir

Person responsible for updating data

Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Ava Karimian
Position
Resident
Latest degree
Medical doctor
Other areas of specialty/work
Medical Pharmacy
Street address
Shiraz, Namazi Hospital, Zand Street, Namazi Square
City
shiraz
Province
Fars
Postal code
7193711351
Phone
+98 71 3647 4332
Email
avakarimian@sums.ac.ir

Sharing plan

Deidentified Individual Participant Data Set (IPD)
Undecided - It is not yet known if there will be a plan to make this available
Study Protocol
Undecided - It is not yet known if there will be a plan to make this available
Statistical Analysis Plan
Undecided - It is not yet known if there will be a plan to make this available
Informed Consent Form
Undecided - It is not yet known if there will be a plan to make this available
Clinical Study Report
Undecided - It is not yet known if there will be a plan to make this available
Analytic Code
Undecided - It is not yet known if there will be a plan to make this available
Data Dictionary
Undecided - It is not yet known if there will be a plan to make this available
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