Morning salivary cortisol with regard to gender in individuals with perceived facial pain

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Abstract

ABSTRACT BACKGROUND AND OBJECTIVES: Facial pain seems to be related to physiological responses to stress and sexual dimorphism. However, the relationship among facial pain, cortisol secretion and gender has been poorly investigated. This study aimed to investigate differences in morning salivary cortisol profile between males and females either with or without perceived facial pain symptoms. METHODS: Participated in the study 39 individuals reporting facial pain and 33 painless controls of both genders. Facial pain symptoms were evaluated with Axis II Research Diagnostic Criteria for Temporomandibular Disorders, which has supplied chronic pain scores. Saliva was collected in the morning to obtain cortisol peaks, being stored for further use. Salivary cortisol levels were evaluated by immunosorbent assay. Statistical analysis has included hypotheses tests and ANOVA with significance level of 5% and a binary logistic regression, which has tested the association between gender, cortisol and each facial pain symptom. RESULTS: There has been no association between facial pain and gender. Cortisol levels were similar among individuals with and without facial pain, regardless of gender. The adjusted model has shown that most symptoms were not associated to gender, regardless of cortisol levels. CONCLUSION: In individuals with and without facial pain symptoms, morning salivary cortisol levels regulation has been similar for both genders.

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Salivary cortisol as a biomarker in stress research.

Dirk Hellhammer, Stefan Wüst, Brigitte Kudielka (2009)

Salivary cortisol is frequently used as a biomarker of psychological stress. However, psychobiological mechanisms, which trigger the hypothalamus-pituitary-adrenal axis (HPAA) can only indirectly be assessed by salivary cortisol measures. The different instances that control HPAA reactivity (hippocampus, hypothalamus, pituitary, adrenals) and their respective modulators, receptors, or binding proteins, may all affect salivary cortisol measures. Thus, a linear relationship with measures of plasma ACTH and cortisol in blood or urine does not necessarily exist. This is particularly true under response conditions. The present paper addresses several psychological and biological variables, which may account for such dissociations, and aims to help researchers to rate the validity and psychobiological significance of salivary cortisol as an HPAA biomarker of stress in their experiments.

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Signs and symptoms of first-onset TMD and sociodemographic predictors of its development: the OPPERA prospective cohort study.

Gary D Slade, Eric Bair, Joel D Greenspan … (2013)

Although cross-sectional studies of temporomandibular disorder (TMD) often report elevated prevalence in young women, they do not address the risk of its development. Here we evaluate sociodemographic predictors of TMD incidence in a community-based prospective cohort study of U.S. adults. Symptoms and pain-related disability in TMD cases are also described. People aged 18 to 44 years with no history of TMD were enrolled at 4 study sites when they completed questionnaires about sociodemographic characteristics. During the median 2.8-year follow-up period, 2,737 participants completed quarterly screening questionnaires. Those reporting symptoms were examined clinically and 260 had first-onset TMD. Additional questionnaires asked about severity and impact of their symptoms. Univariate and multivariable Cox regression models quantified associations between sociodemographic characteristics and TMD incidence. First-onset TMD developed in 3.9% of participants per annum, typically producing mild to moderate levels of pain and disability in cases. TMD incidence was positively associated with age, whereas females had only slightly greater incidence than males. Compared to whites, Asians had lower TMD incidence whereas African Americans had greater incidence, although the latter was attenuated somewhat after adjusting for satisfaction with socioeconomic circumstances.

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Sleep disorders and their association with laboratory pain sensitivity in temporomandibular joint disorder.

Stephen Peterson, Luis Buenaver, Jodi Edwards … (2009)

We characterized sleep disorder rates in temporomandibular joint disorder (TMD) and evaluated possible associations between sleep disorders and laboratory measures of pain sensitivity. Research diagnostic examinations were conducted, followed by two consecutive overnight polysomnographic studies with morning and evening assessments of pain threshold. Orofacial pain clinic and inpatient sleep research facility. Fifty-three patients meeting research diagnostic criteria for myofascial TMD. N/A. We determined sleep disorder diagnostic rates and conducted algometric measures of pressure pain threshold on the masseter and forearm. Heat pain threshold was measured on the forearm; 75% met self-report criteria for sleep bruxism, but only 17% met PSG criteria for active sleep bruxism. Two or more sleep disorders were diagnosed in 43% of patients. Insomnia disorder (36%) and sleep apnea (28.4%) demonstrated the highest frequencies. Primary insomnia (PI) (26%) comprised the largest subcategory of insomnia. Even after controlling for multiple potential confounds, PI was associated with reduced mechanical and thermal pain thresholds at all sites (P < 0.05). Conversely, the respiratory disturbance index was associated with increased mechanical pain thresholds on the forearm (P < 0.05). High rates of PI and sleep apnea highlight the need to refer TMD patients complaining of sleep disturbance for polysomnographic evaluation. The association of PI and hyperalgesia at a nonorofacial site suggests that PI may be linked with central sensitivity and could play an etiologic role in idiopathic pain disorders. The association between sleep disordered breathing and hypoalgesia requires further study and may provide novel insight into the complex interactions between sleep and pain-regulatory processes.