Oral microbiome in HIV-associated periodontitis.

HIV-associated periodontal diseases (PD) could serve as a source of chronic inflammation. Here, we sought to characterize the oral microbial signatures of HIV+ and HIV- individuals at different levels of PD severity.This cross-sectional study included both HIV+ and HIV- patients with varying degrees of PD. Two tooth, 2 cheek, and 1 saliva samples were obtained for microbiome analysis. Mothur/SILVADB were used to classify sequences. R/Bioconductor (Vegan, PhyloSeq, and DESeq2) was employed to assess overall microbiome structure differences and differential abundance of bacterial genera between groups. Polychromatic flow cytometry was used to assess immune activation in CD4 and CD8 cell populations.Around 250 cheek, tooth, and saliva samples from 50 participants (40 HIV+ and 10 HIV-) were included. Severity of PD was classified clinically as None/Mild (N), Moderate (M), and Severe (S) with 18 (36%), 16 (32%), and 16 (32%) participants in each category, respectively. Globally, ordination analysis demonstrated clustering by anatomic site (R2 = 0.25, P < 0.001). HIV status and PD severity showed a statistically significant impact on microbiome composition but only accounted for a combined 2% of variation. HIV+ samples were enriched in genera Abiotrophia, Neisseria, Kingella, and unclassified Neisseriaceae and depleted in Leptotrichia and Selenomonas. The Neisseria genus was consistently enriched in HIV+ participants regardless of sampling site and PD level. Immune markers were altered in HIV+ participants but did not show association with the oral microbiome.HIV-associated changes in oral microbiome result in subtle microbial signatures along different stages of PD that are common in independent oral anatomic sites.

High Accuracy of Common HIV-Related Oral Disease Diagnoses by Non-Oral Health Specialists in the AIDS Clinical Trial Group.

OBJECTIVE: Many studies include oral HIV-related endpoints that may be diagnosed by non-oral-health specialists (non-OHS) like nurses or physicians. Our objective was to assess the accuracy of clinical diagnoses of HIV-related oral lesions made by non-OHS compared to diagnoses made by OHS. METHODS: A5254, a cross-sectional study conducted by the Oral HIV/AIDS Research Alliance within the AIDS Clinical Trial Group, enrolled HIV-1-infected adults participants from six clinical trial units (CTU) in the US (San Francisco, New York, Chapel Hill, Cleveland, Atlanta) and Haiti. CTU examiners (non-OHS) received standardized training on how to perform an oral examination and make clinical diagnoses of specific oral disease endpoints. Diagnoses by calibrated non-OHS were compared to those made by calibrated OHS, and sensitivity and specificity computed. RESULTS: Among 324 participants, the majority were black (73%), men (66%), and the median CD4+ cell count 138 cells/mm(3). The overall frequency of oral mucosal disease diagnosed by OHS was 43% in US sites, and 90% in Haiti. Oral candidiasis (OC) was detected in 153 (47%) by OHS, with erythematous candidiasis (EC) the most common type (39%) followed by pseudomembranous candidiasis (PC; 26%). The highest prevalence of OC (79%) was among participants in Haiti, and among those with CD4+ cell count ≤ 200 cells/mm(3) and HIV-1 RNA > 1000 copies/mL (71%). The sensitivity and specificity of OC diagnoses by non-OHS were 90% and 92% (for EC: 81% and 94%; PC: 82% and 95%). Sensitivity and specificity were also high for KS (87% and 94%, respectively), but sensitivity was < 60% for HL and oral warts in all sites combined. The Candida culture confirmation of OC clinical diagnoses (as defined by ≥ 1 colony forming unit per mL of oral/throat rinse) was ≥ 93% for both PC and EC. CONCLUSION: Trained non-OHS showed high accuracy of clinical diagnoses of OC in comparison with OHS, suggesting their usefulness in studies in resource-poor settings, but detection of less common lesions may require OHS.

Interactive cervical motion kinematics: sensitivity, specificity and clinically significant values for identifying kinematic impairments in patients with chronic neck pain.

Chronic neck pain has been consistently shown to be associated with impaired kinematic control including reduced range, velocity and smoothness of cervical motion, that seem relevant to daily function as in quick neck motion in response to surrounding stimuli. The objectives of this study were: to compare interactive cervical kinematics in patients with neck pain and controls; to explore the new measures of cervical motion accuracy; and to find the sensitivity, specificity, and optimal cutoff values for defining impaired kinematics in those with neck pain. In this cross-section study, 33 patients with chronic neck pain and 22 asymptomatic controls were assessed for their cervical kinematic control using interactive virtual reality hardware and customized software utilizing a head mounted display with built-in head tracking. Outcome measures included peak and mean velocity, smoothness (represented by number of velocity peaks (NVP)), symmetry (represented by time to peak velocity percentage (TTPP)), and accuracy of cervical motion. Results demonstrated significant and strong effect-size differences in peak and mean velocities, NVP and TTPP in all directions excluding TTPP in left rotation, and good effect-size group differences in 5/8 accuracy measures. Regression results emphasized the high clinical value of neck motion velocity, with very high sensitivity and specificity (85%-100%), followed by motion smoothness, symmetry and accuracy. These finding suggest cervical kinematics should be evaluated clinically, and screened by the provided cut off values for identification of relevant impairments in those with neck pain. Such identification of presence or absence of kinematic impairments may direct treatment strategies and additional evaluation when needed.

Screening for infectious diseases in the dental setting.

Human immunodeficiency virus (HIV) and hepatitis C virus (HCV) are 2 systemic infectious diseases that dental health care professionals can help identify with the goal of improving health outcomes, addressing health disparities, and improving the quality and quantity of life. Whether by identifying suspect oral lesions, as is the case with HIV infection, or offering rapid screening tests in the dental setting for both HIV and HCV, the dental team can play an important role in linkage to confirmatory diagnosis and care.

Increasing access to oral health care for people living with HIV/AIDS in the U.S.: baseline evaluation results of the Innovations in Oral Health Care Initiative.

OBJECTIVES: We provide an overview of the Health Resources and Services Administration HIV/AIDS Bureau's Special Projects of National Significance Innovations in Oral Health Care Initiative, describe the models developed by the 15 demonstration sites and associated evaluation center, and present initial descriptive data about the characteristics of the multisite evaluation study sample. METHODS: Baseline data were collected from May 2007-August 2009 for 2,469 adults living with HIV/AIDS who had been without dental care, except for emergency care, for 12 months or longer. Variables included sociodemographic characteristics, HIV status, medical care, history of dental care and oral health symptoms, oral health practices, and physical and mental health quality of life. Descriptive statistics of baseline variables were calculated. RESULTS: The study sample included 2,469 adults who had been HIV-positive for a decade; most were engaged in HIV care. The majority (52.4%) of patients had not seen a dentist in more than two years; 48.2% reported an unmet oral health-care need since testing positive for HIV, and 63.2% rated the health of their teeth and gums as "fair" or "poor." CONCLUSIONS: This study is the largest to examine oral health care among people living with HIV/AIDS in more than a decade. The need for access to oral health care among members of this HIV-positive patient sample is greater than in the general population, following previous trends. Findings from our study reinforce the necessity for continued federal and statewide advocacy and support for oral health programs targeting people living with HIV/AIDS; findings can be extended to other vulnerable populations.

Correlates of unmet dental care need among HIV-positive people since being diagnosed with HIV.

OBJECTIVES: We analyzed the characteristics of people living with HIV/AIDS (PLWHA) who reported unmet oral health needs since testing positive and compared those characteristics with people reporting no unmet health needs. We also identified barriers to accessing oral health care for PLWHA. METHODS: We collected data from 2,469 HIV-positive patients who had not received oral health care in the previous 12 months and who had accessed care at Health Resources and Service Administration-funded Special Projects of National Significance Innovations in Oral Health Care Initiative demonstration sites. The outcome of interest was prior unmet oral health needs. We explore barriers to receiving oral health care, including cost, access, logistics, and personal factors. Bivariate tests of significance and generalized estimating equations were used in analyses. RESULTS: Nearly half of the study participants reported unmet dental care needs since their HIV diagnosis. People reporting unmet needs were more likely to be non-Hispanic white, U.S.-born, and HIV-positive for more than one year, and to have ever used crack cocaine or crystal methamphetamine. The top three reported barriers to oral care were cost, access to dental care, and fear of dental care. Additional reported barriers were indifference to dental care and logistical issues. CONCLUSION: Innovative strategies are needed to increase access to and retention in oral health care for PLWHA. Key areas for action include developing strategies to reduce costs, increase access, and reduce personal barriers to receiving dental care, particularly considering the impact of poor oral health in this population.

Methamphetamine use and dental problems among adults enrolled in a program to increase access to oral health services for people living with HIV/AIDS.

OBJECTIVE: We examined the association between methamphetamine (meth) use and dental problems in a large sample of HIV-positive adults. METHODS: We gathered data from 2,178 interviews across 14 sites of the U.S. Health Resources and Services Administration HIV/AIDS Bureau's Special Projects of National Significance Innovations in Oral Health Care Initiative from May 2007 to August 2010. We used multivariate generalized estimating equations to test the association between meth use and dental problems, adjusting for potential confounders. RESULTS: Past and current meth use was significantly associated with more dental problems. The study also found that poor self-reported mental health status, fewer years since testing positive for HIV, a history of forgoing dental care, less frequent teeth brushing, poor self-reported oral health status, oral pain, grinding or clenching teeth, some alcohol use, more years of education, and self-reported men-who-have-sex-with-men HIV risk exposure (compared with other exposure routes) were significantly associated with dental problems. CONCLUSION: Individuals who are HIV-positive with a history of meth use experience access barriers to oral health care and more dental problems. Our study demonstrated that it is possible to recruit this population into dental care. Findings suggest that predisposing, enabling, and need factors can serve as demographic, clinical, and behavioral markers for recruiting people living with HIV/AIDS into oral health programs that can mitigate dental problems.

Factors associated with preventive dental care-seeking behavior among people living with HIV.

OBJECTIVES: This study examined factors associated with preventive dental care-seeking behavior among HIV-positive adults who participated in a federally funded demonstration project to expand access to oral health care. METHODS: Two thousand one hundred eighty-seven adults living with human immunodeficiency virus (HIV) in the United States were enrolled in free dental care and were interviewed about their reasons for seeking care, their oral health, and overall health status. Multivariate analysis using Generalized Estimating Equations to control for clustering by site was conducted to identify factors associated with preventive care-seeking behavior. RESULTS: Forty-one percent of participants reported the only reason they sought dental care was for preventive care, to receive a checkup or cleaning. Factors associated with preventive care-seeking behavior in multivariate analysis included no unmet need for dental care since testing HIV positive, no dental insurance, taking HIV medications and better overall oral health. CONCLUSIONS: Many HIV-positive adults may seek preventive care when it is offered at no cost. Interventions that address unmet needs and target individuals who are not taking HIV medications or have poorer oral health may improve preventive practices.

Oral sampling and human papillomavirus genotyping in HIV-infected patients.

BACKGROUND: Oral human papillomavirus (HPV) is associated with several health complications especially in combination with HIV infections. Screening may be useful, but methodologies and results have varied widely in previous studies. We conducted a pilot study in an HIV-positive population to evaluate HPV detection in four different oral sample types. METHODS: Upon enrollment, an oral-rinse (OR) sample was collected in 10 ml saline. Additional samples of the buccal mucosa, tonsils, and oral lesion if present were collected with cytology brushes. DNA was extracted using LC-MagNAPure, and the Linear Array HPV genotyping Assay (Roche) was used for HPV genotyping. RESULTS: In samples from 100 HIV-positive participants, HPV was detected in 39 (%) of the oral rinses, 13 (%) mucosal and 11 (12.9%) tonsil brushings. Of seven lesion brushings collected, four were HPV positive. All participants with HPV detected in mucosal, tonsil, or lesion brushings were also positive in the OR sample. Among the rinse samples, 27 different genotypes were detected with HPV84 (n = 6), HPV55 (n = 5), and HPV83 (n = 5) being the most common. Multiple infections were detected in 17 samples (range 2-9, mean 1.9 types). As potential cofactors, only receptive oral sex was significantly associated with HPV (P = 0.018, odds ratio 2.9, 95% CI 1.2-6.9). CONCLUSION: Sampling is a significant factor for oral prevalence studies. Oral rinse provides the best representation for HPV in the oral cavity. To evaluate associated cofactors other than receptive oral sex, larger studies with case-control design are necessary.

Patients' attitudes about rapid oral HIV screening in an urban, free dental clinic.

The 2006 Centers for Disease Control recommendations for routine HIV screening in all health care settings could include dental clinics an important testing venue. However, little is known about patients' attitudes regarding the routine use of rapid oral HIV screening at an urban free dental clinic. This pilot study seeks to evaluate the patient perspective on rapid HIV screening in this setting. In June 2007, patients at a free dental clinic in Kansas City, Missouri, were provided an attitude assessment survey prior to their dental visit. This dental clinic serves a diverse patient population consisting of approximately 37% white, 47% black, 6% Hispanic, 4% Asian, and 1% Native American uninsured patients. Results were analyzed for acceptance of testing and potential barriers. Of the 150 respondents, 73% reported they would be willing to take a free rapid HIV screening test during their dental visit. Overall, 91% of Hispanics, 79% of Caucasians, and 73% of African American patients reported they would be willing to be screened. Patients with a history of multiple prior screening tests for HIV were more likely to agree to oral rapid HIV screening in the dental clinic. The majority (62%) reported that it did not matter who provided them with the screening result, although some (37%) preferred their dentist above any other provider. Low self-perception of risk (37%) and having already received screening elsewhere (24%) were the main reasons for not accepting a free, rapid HIV screening. Overall, dental clinic patients widely accepted the offer of rapid oral HIV screening. Rapid HIV screening in the dental clinic setting is a viable option to increase the number of individuals who know their HIV status.

Globalization and medicine in Trinidad.

In a qualitative study of urban Trinidadians who work in the medical industry, the concept of medical globalization was provisionally analysed. Two research questions were addressed: what is globalization, in the context of mainstream medicine, and how is this process manifested in everyday practices? Four fundamental principles of medical globalization emerged from in-depth interviews and analysis of observational materials: (1) the notion of history as an autonomous force with globalization as the latest stage, (2) the expansion of 'Total Market' philosophy as a driving social force, (3) the fragmentation of society into atomistic, self-interested, and competitive individuals, and (4) the adoption of a 'centralised' set of ideals as the normative core necessary for social order. In this paper, findings from this investigation and their implications are discussed. In particular, medical globalization is linked with major themes in medical sociological theory including dualism and medicalization.

Oral manifestations of HIV disease.

HIV-related oral conditions occur in a large proportion of patients, and frequently are misdiagnosed or inadequately treated. Dental expertise is necessary for appropriate management of oral manifestations of HIV infection or AIDS, but many patients do not receive adequate dental care. Common or notable HIV-related oral conditions include xerostomia, candidiasis, oral hairy leukoplakia, periodontal diseases such as linear gingival erythema and necrotizing ulcerative periodontitis, Kaposi's sarcoma, human papilloma virus-associated warts, and ulcerative conditions including herpes simplex virus lesions, recurrent aphthous ulcers, and neutropenic ulcers.

Oral manifestations in the era of HAART.

AIDS has reached epidemic proportions in the United States, disproportionately affecting African-Americans and other minorities. As highly active antiretroviral therapy (HAART) have improved the length and quality of life for HIV-Infected people, oral health care has made similar strides. It is important that physicians and dentists recognize the earliest signs and symptoms of HIV infection in order that a timely diagnosis and patient referral can be made for early counseling testing, and treatment. At the same time, dentists have seen themselves at considerable risk from HIV Infection. Some dentists believe that they may also be more at risk from stigma then other providers if they treat HIV patients.

Human papillomavirus-associated oral warts among human immunodeficiency virus-seropositive patients in the era of highly active antiretroviral therapy: an emerging infection.

Oral warts are a manifestation of human papillomavirus infection that have been noted infrequently in persons with human immunodeficiency virus (HIV). A nested case-control study was conducted to assess rates of and risk factors for oral warts among a cohort of HIV-seropositive patients. From 1997 through 1999, 56 patients with oral warts were identified among 2194 HIV-positive patients attending an urban oral health center (prevalence, 2.6%). Incident cases of oral warts were significantly more likely to have been diagnosed in 1999 than they were in 1997-1998 (P=.001). Multivariate analysis indicated that the risk of oral warts was associated with a >/=1-log(10) decrease in HIV RNA level in the 6 months before diagnosis of oral warts (odds ratio [OR], 2.35; 95% confidence interval [CI], 1.08-5.11) and with serologic evidence of chronic or previous infection with hepatitis B virus (OR, 2.66; 95% CI, 1.31-5.41). The incidence of oral warts in HIV-seropositive patients appears to be increasing in the era of highly active antiretroviral therapy. Oral warts were associated with reductions in virus load, which suggests that this may in part be related to immune reconstitution.