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H. Pylori Eradication Using Pyklear in Adults in El Paso, Texas: a Pilot Study

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified April 2011 by The University of Texas Health Science Center, Houston.
Recruitment status was:  Recruiting
Information provided by:
The University of Texas Health Science Center, Houston Identifier:
First received: April 12, 2011
Last updated: April 13, 2011
Last verified: April 2011
The proposed open-label one arm before-after clinical trial will assess the efficacy of a 14-day quadruple therapy containing 420mg of bismuth subcitrate potassium, 375mg of metronidazole, 375mg of tetracycline hydrochloride (Pylera® packs from Axcan Pharma) and 20mg of omeprazole in eradicating H. pylori infection in 50 asymptomatic adults in El Paso, Texas. As part of the study we will obtain specimens for culture of H. pylori in a reference laboratory.

Condition Intervention Phase
H. Pylori Infection Drug: bismuth subcitrate potassium, metronidazole,tetracycline hydrochloride and omeprazole Phase 4

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Helicobacter Pylori Eradication Using a Bismuth Quadruple Therapy Among Asymptomatically Infected Adults in El Paso, Texas: A Pilot Study.

Resource links provided by NLM:

Further study details as provided by The University of Texas Health Science Center, Houston:

Primary Outcome Measures:
  • H. pylori eradication [ Time Frame: 45+ days after treatment ]
    <2.4 per mil delta over baseline on a urea breath test

Estimated Enrollment: 50
Study Start Date: March 2011
Estimated Study Completion Date: August 2011
Estimated Primary Completion Date: June 2011 (Final data collection date for primary outcome measure)
Intervention Details:
    Drug: bismuth subcitrate potassium, metronidazole,tetracycline hydrochloride and omeprazole
    Pylera capsule contains bismuth subcitrate potassium, 140 mg (q.i.d.), metronidazole, 125mg (q.i.d.), tetracycline hydrochloride, 125mg (q.i.d.). Generic omeprazole (20mg, b.i.d) tablets
    Other Names:
    • Pylera
    • Omeprazole
  Show Detailed Description


Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • An Institutional Review Board (IRB) approved informed consent is signed and dated prior to any study-related activities.
  • Subject is male or female.

If the subject is female, she would be eligible to enter if she is of: Non-childbearing potential (ie, physiologically incapable of becoming pregnant, including any female who has undergone sterilization [hysterectomy or bilateral tubal ligation] or is post-menopausal. For purposes of this study, postmenopausal is defined as 1 year without menses. Women of childbearing potential should have a negative urine pregnancy test at screening and, if heterosexually active, should agree to use a medically approved method of birth control. Medically approved methods of birth control include:

  • Double barrier method of contraception, specifically, use of a condom and spermicide, for 1 week prior to study drug administration, throughout the 14 days of treatment and the 7-day follow-up.
  • Approved hormonal contraceptives administered for at least 2 monthly cycles prior to study drug administration, throughout the study period and for 1 monthly cycle following completion of study. An intrauterine device (IUD), inserted by a qualified clinician, at least 1 month prior to study drug administration, throughout the study period and for 1 month following completion of the study.
  • Partner has undergone vasectomy and subject is in a monogamous relationship.
  • Complete abstinence from intercourse for at least 2 weeks prior to study drug administration and throughout the 14-day of treatment. The investigator is responsible for determining whether the subject has adequate birth control for study participation.

    • Subject is at least 18 years of age and not older than 65 years.
    • Subject is infected with H. pylori according to results of a urine antibody test and subsequently confirmed by urea breath testing.
    • Subject is otherwise in good health, free of liver and kidney disease (as determined by medical history and confirmed by liver and kidney tests at baseline).
    • Subject has not received any H. pylori eradication treatment before, not having received antibiotics in the preceding 30 days, or use bismuth compounds more than 3 times per week or other antacids 30 days before taking part in the study.
    • Subject is capable of and willing to comply with all study procedures.

Exclusion Criteria:

  • Self-prescribed use of antibiotics, or recent (less than 3 months) of medically prescribed antibiotic treatment for H. pylori eradication.
  • Subject is taking a macrolide, amoxicillin, metronidazole or any other imidazole during the study.
  • Subject is taking another proton pump inhibitor within 7 days of enrollment unless medically prescribed.
  • Subject has hypersensitivity or allergy to penicillin, macrolides or initromidazoles.
  • Subject has known or suspected alcohol abuse or illicit drug use within 1 year of enrollment.
  • Subject has participated in an investigational drug or device study within the 30 days prior to randomization.
  • Subject has concomitant disease or condition that could interfere with, or for which treatment could interfere with the conduct of the study, or could in the opinion of the investigator increase the risk of AEs for the subject's participation in the study, such as having neuropathies or being medically diagnosed with epilepsy.
  • Subject is unwilling or unable to comply with the study protocol for any other reason.
  • Subject is an alcoholic, according to CAGE questionnaire.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01335334

Contact: Victor M Cardenas, MD PhD 915-747-8503

United States, Texas
Victor M. Cardenas Recruiting
El Paso, Texas, United States, 79902
Sub-Investigator: Cesar O Salazar, MD         
Sponsors and Collaborators
The University of Texas Health Science Center, Houston
  More Information

Responsible Party: Victor M. Cardenas, UT HSC School of Public Health Identifier: NCT01335334     History of Changes
Other Study ID Numbers: UTHSCSPH100386
Study First Received: April 12, 2011
Last Updated: April 13, 2011

Keywords provided by The University of Texas Health Science Center, Houston:

Additional relevant MeSH terms:
Bismuth tripotassium dicitrate
Anti-Infective Agents
Antiprotozoal Agents
Antiparasitic Agents
Anti-Ulcer Agents
Gastrointestinal Agents
Proton Pump Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anti-Bacterial Agents
Protein Synthesis Inhibitors processed this record on August 18, 2017