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Bactérias orais e problemas do sistema imunológico envolvidos na doença da gengiva (periodontite)

23 de outubro de 2026 atualizado por: National Institute of Dental and Craniofacial Research (NIDCR)

Caracterização Microbiana Oral e Imunológica de Pacientes com Disfunção Imunológica

Background:

- Gum disease is a condition in which the tissue around the tooth root becomes swollen and infected. This condition can cause tooth loss if it is not treated. Who gets gum disease and how bad it will be depends on (1) the different bacteria in the mouth and (2) how the immune system of an individual handles these bacteria. Researchers want to look at the oral bacteria and genetic immune problems of different people to learn how these affect gum disease and other conditions of the mouth.

Objectives:

- To study how immune system problems may lead to problems in the mouth, including gum disease.

Eligibility:

Children and adults at least 7 years of age who have genetic problems with their immune system.
Healthy adults that have periodontal disease
Health adults that do not have periodontal disease

Design:

This study will involve a screening visit and a study visit.
Participants will be screened with a medical history, blood work and a full oral and dental exam, including dental x-rays and photos.
The study visit will involve collection of blood, urine, and other samples, including saliva, plaque, and gum swabs. Any abnormal tissue will sampled for a biopsy. Additional oral and dental exams will be performed. Participants will also answer questions about any current medical or dental problems.

Visão geral do estudo

Status

Recrutamento

Condições

Descrição detalhada

This is a cross sectional/natural history protocol designed to investigate the clinical,

microbiologic, and immunologic consequences of genetic immune defects in the oral cavity. The hypothesis is that genetic immune defects will lead to alterations in the local immune response and microbial colonization and ultimately predispose to susceptibility to oral infections and inflammatory conditions.

In the cross-sectional phase the following individuals will be enrolled, evaluated and screened for presence and severity of periodontitis, presence of a genetic defects and sampled for studies in oral immunity and microbiome: 1) individuals diagnosed with genetic immune defects 2) individuals with severe periodontitis of suspected genetic etiology and their family members 3) healthy volunteers. Subjects identified with a genetic immune defect and with presence of oral disease (primarily periodontitis) may enter the natural history phase of the study to be clinically followed at the National Institutes of Health (NIH) over time. This protocol aims to determine whether specific genetic immune defects will predispose to oral disease (primarily periodontitis) and to better understand consequences of immune deficiency on the oral immune response and microbiome.

Primary Objectives

Investigate the degree, scope, etiology and natural history of oral manifestations in patients with genetic immune defects.
Characterize the immune response in the oral cavity of patients with genetic immune defects.
Characterize the microbiome in the oral cavity of patients with genetic immune defects.

Secondary Objectives

Assay development/validation for the study of tissue immunity and microbiome characterization
Establishment of normative values for immune mediators and microbial elements at the oral cavity

Study Population (s)

The study population will include:

Subjects with genetic immune defects
Subjects with severe periodontitis of suspected genetic etiology and their family members
Healthy volunteers (with/without periodontal disease)

Design

This is a cross-sectional/natural history study for the evaluation of clinical, immunologic, and microbiologic oral manifestations (primarily periodontitis) in patients diagnosed with genetic immune defects or those with severe periodontitis of suspected genetic etiology and healthy volunteer subjects.

Cross Sectional Phase: Three groups of subjects will be enrolled in the cross-sectional phase of the study 1) individuals diagnosed with genetic immune defects 2) individuals with severe periodontitis of suspected genetic etiology and their family members that include parents or siblings 3) healthy volunteers (with/without periodontal disease). All groups will be evaluated for oral disease (periodontitis) may be and sampled for oral immunity, systemic immunity and microbiome characterization. Individuals with severe periodontitis in the presence/absence of a genetic defect may be offered the option of receiving standard of care inflammatory control periodontal treatment at NIH without travel compensation, following the cross-sectional portion of the study. Family members (parents or siblings) of individuals with periodontal disease of suspected genetic may be asked to participate in this study. During the course of genetic testing, family members may be enrolled in the cross sectional phase of the study for phenotyping and genetic testing.

Natural History Phase: Subjects identified with a genetic defect with the presence of oral disease may enroll in the natural history phase of the study to be followed clinically over time.

Primary Outcome Measures

Clinical intraoral characterization (i.e., presence and severity of periodontitis).
Characterize the immune response in the oral cavity of patients with genetic immune defects
Characterize the microbiome in the oral cavity of patients with genetic immune defects

Secondary Outcome Measures

Assay development/validation for the study of tissue immunity and microbiome characterization
Establishment of normative values for immune mediators and microbial elements at the oral cavity

Exploratory Outcome Measures

Initial data from this study may generate new hypotheses for investigation as part of this study.

Tipo de estudo

Observacional

Inscrição (Estimado)

700

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Nome: Niki M Moutsopoulos, D.D.S.
Número de telefone: (301) 435-7182
E-mail: nmoutsop@mail.nih.gov

Estude backup de contato

Nome: Laurie D Brenchley, R.D.H.
Número de telefone: (301) 451-2551
E-mail: laurie.brenchley@nih.gov

Locais de estudo

Estados Unidos
- Maryland
  - Bethesda, Maryland, Estados Unidos, 20892
    - Recrutamento
    - National Institutes of Health Clinical Center
    - Contato:
      
      For more information at the NIH Clinical Center contact Office of Patient Recruitment (OPR)
      
      Número de telefone: TTY dial 711 800-411-1222
      
      E-mail: ccopr@nih.gov

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

7 anos a 100 anos (Filho, Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Sim

Gêneros Elegíveis para o Estudo

Tudo

Método de amostragem

Amostra Não Probabilística

População do estudo

This is a cross sectional/natural history protocol designed to investigate the clinical, microbiologic, and immunologic consequences of genetic immune defects in the oral cavity. Three cohorts will be enrolled 1) subjects with genetic immune defects 2) subjects with severe periodontitis of suspected genetic etiology and their family members 3) healthy volunteers (with/without periodontal disease). The study involves detailed oral clinical and radiographic evaluations, standard laboratory testing and research sampling of blood and oral samples. All evaluations are performed at the NIH Clinical Center.

Descrição

INCLUSION CRITERIA:

Subjects with Genetic Immune Defects:

Patients with a known genetic immune defect will be eligible for screening inclusion under this protocol.

Diagnosed with a genetic immune defect
Willing to allow genetic testing
- 7 years old

Subjects with Severe Periodontitis of Suspected Genetic Etiology:

History of severe periodontitis prior to age <30
Willing to allow genetic testing

->=7 years old
In good general health

Family members of Subjects with Severe Periodontitis of Suspected Genetic Etiology:

-Willing to allow genetic testing

->=7 years old

Healthy Volunteer Subjects (with/without periodontitis):

In good general health

->=18 years old
Willing to allow genetic testing
Have a minimum of 20 natural teeth

Inclusion Criteria for Natural History phase, all subjects:

Diagnosis of genetic immune defect
Presence of oral manifestation (primarily periodontitis)

Criteria for standard of care treatment:

Active untreated disease (visible signs of tissue inflammation including erythema/edema, generalized bleeding upon probing)
Periodontal disease defined as bone loss of >=5mm as measured on periodontal exam.

EXCLUSION CRITERIA:

All Subjects:

History of Hepatitis B or C
History of HIV
Prior radiation therapy to the head or neck
Have an active malignancy except localized basal or squamous cell carcinoma of the skin
Have been treated with systemic chemotherapeutics or radiation therapy within 5 years of screening
Pregnant or lactating
If participation in the protocol would not be safe or in the subject s best interest in the opinion of either the PI or the primary medical team.

Additional Exclusions for Healthy Volunteers:

Diagnosis of diabetes and/or HbA1C level >6%
More than 3 hospitalizations in the last 3years
Have an autoimmune disorder such as Lupus, Rheumatoid arthritis, etc.
In the 3 months before study enrollment, have used any of the following:
- Systemic (intravenous, intramuscular, or oral) antibiotics
- Oral, intravenous, intramuscular, intranasal, or inhaled corticosteroids or other immunosuppressants (e.g., cyclosporine)
- Cytokine therapy
- Methotrexate or immunosuppressive chemotherapeutic agents
- Large doses of commercial probiotics (>=10^8 colony-forming units or organisms per day); includes tablets, capsules, lozenges, chewing gum, or powders in which a probiotic is a primary component; ordinary dietary components such as fermented beverages/milks, yogurts, and foods do not apply
Have used tobacco products (including e-cigarettes) within 1 year of screening
Unwillingness to consent to oral biopsy
NIH employees working in the Oral Immunity and Inflammation Unit and members of the Clinical Research Core Team will not be eligible for enrollment.

Additional Exclusions for Standard of Care Treatment at NIH:

Mild/moderate non-active disease (absence of active inflammatory lesions)
Subjects with urgent/complex restorative needs (ex. severe active carious lesions/fractured dentition)
Subjects in need for advanced prosthetic needs (including implants and restorations)

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

Modelos de observação: CASE_CONTROL
Perspectivas de Tempo: CROSS_SECTIONAL

Número de grupos/coortes

Coortes e Intervenções

Grupo / Coorte
Healthy Volunteers Healthy volunteers (with/without periodontal disease)
Immune deficient patients Subjects with known genetic immune deficiency
Subjects with severe periodontitis of suspected genetic etiology and their family Subjects with severe periodontitis of suspected genetic etiology and their family members

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado	Descrição da medida	Prazo
3. Characterize the microbiome in the oral cavity of patients with genetic immune defects Prazo: 25 years	The primary clinical endpoints of the study are severity and types of oral disease: specifically for periodontal disease, mean PD, mean CAL, proportion of sites with PD >5 mm, and proportion of subjects with BOP, proportion of patient with other inflammatory conditions or infections of the oral cavity by immune disorder.Characterization of the oral microbiome in patients with monogenic immune defects. Immunologic endpoints: types and levels of immune mediators in the saliva, GCF, oral tissues, and/or blood.	25 years
2. Characterize the immune response in the oral cavity of patients with genetic immune defects Prazo: 25 years	The primary clinical endpoints of the study are severity and types of oral disease: specifically for periodontal disease, mean PD, mean CAL, proportion of sites with PD >5 mm, and proportion of subjects with BOP, proportion of patient with other inflammatory conditions or infections of the oral cavity by immune disorder.Characterization of the oral microbiome in patients with monogenic immune defects. Immunologic endpoints: types and levels of immune mediators in the saliva, GCF, oral tissues, and/or blood.	25 years
1. Clinical intraoral characterization (i.e., presence and severity of periodontitis). Prazo: 25 years	The primary clinical endpoints of the study are severity and types of oral disease: specifically for periodontal disease, mean PD, mean CAL, proportion of sites with PD >5 mm, and proportion of subjects with BOP, proportion of patient with other inflammatory conditions or infections of the oral cavity by immune disorder.Characterization of the oral microbiome in patients with monogenic immune defects. Immunologic endpoints: types and levels of immune mediators in the saliva, GCF, oral tissues, and/or blood.	25 years

Medidas de resultados secundários

Medida de resultado	Descrição da medida	Prazo
2. Establishment of normative values for immune mediators and microbial elements at the oral cavity Prazo: 25 years	Validate methodologies for measuring levels of immune mediators in oral fluids - Establish normative values of immune mediators in oral fluids and tissues - Assay development; Develop new methodologies to study pathways of the immune response in the oral cavity - Assay development: Develop new methodologies to study the microbiome in the oral cavity	25 years
1. Assay development/validation for the study of tissue immunity and microbiome characterization Prazo: 25 years	Validate methodologies for measuring levels of immune mediators in oral fluids - Establish normative values of immune mediators in oral fluids and tissues - Assay development; Develop new methodologies to study pathways of the immune response in the oral cavity - Assay development: Develop new methodologies to study the microbiome in the oral cavity	25 years

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

National Institute of Dental and Craniofacial Research (NIDCR)

Investigadores

Investigador principal: Niki M Moutsopoulos, D.D.S., National Institute of Dental and Craniofacial Research (NIDCR)

Publicações e links úteis

A pessoa responsável por inserir informações sobre o estudo fornece voluntariamente essas publicações. Estes podem ser sobre qualquer coisa relacionada ao estudo.

Publicações Gerais

Links úteis

<p>NIH Clinical Center Detailed Web Page</p>

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

5 de outubro de 2012

Datas de inscrição no estudo

Enviado pela primeira vez

30 de março de 2012

Enviado pela primeira vez que atendeu aos critérios de CQ