Background Health-Related Quality of Life (HRQoL) in patients with chronic kidney disease (CKD) is significantly affected, regardless of the stage of the disease, as regards the physical, psychological and social functioning dimension. Big-Five personality traits can affect patients’ HRQoL and willingness to take treatment options. Illness denial consists of denial of negative emotions, resistance to change and conscious avoidance. Poorer HRQoL can predict a higher risk of hospitalization and mortality, and broadly a worse adjustment to the dialytic therapy. Thus, a clearer knowledge of the psychological variables associated with a worse HRQoL in the predialysis stage might improve the intervention planning. No study investigated illness denial and personality traits simultaneously. We investigated the role of illness denial and Big-Five personality traits in the domains of HRQoL in predialysis patients with CKD. Methods One hundred adults (mean age: 75.87 years) with CKD participated. The Kidney Disease Quality of Life Short form, the Italian version of Ten Item Personality Inventory Revised, the Illness Denial Questionnaire, and the State-Trait Anxiety Inventory Form-Y were administered. Results Illness denial was associated with increased HRQoL related to symptoms/problems, effect and burden of CKD and cognitive functions domains, and it was a predictor of higher HRQoL in the last three domains mentioned above. Extraversion was related to better work status and sexual function; agreeableness was linked to elevated cognitive function, quality of social interaction and sexual function; conscientiousness was related to better sexual function; neuroticism was linked to improved cognitive and sexual functions; in the end, openness to experience was related to fewer symptoms and problems. Conclusions This is the first study which simultaneously assessed Big-Five personality traits and illness denial in different domains of HRQoL of CKD patients. Personalised psychological interventions aimed at improving HRQoL in this population might focus on specific illness denial processes and personality traits.

IntroductionObsessive-compulsive disorder (OCD) is characterized by recurrent distressing thoughts and repetitive behaviors, or mental rituals performed to reduce anxiety. Recent neurobiological techniques have been particularly convincing in suggesting that cortico-striatal-thalamic-cortico (CSTC) circuits, including orbitofrontal cortex (OFC) and striatum regions (caudate nucleus and putamen), are responsible for mediation of OCD symptoms. However, it is still unclear how these regions are affected by OCD treatments in adult patients. To address this yet open question, we conducted a systematic review of all studies examining neurobiological changes before and after first-line psychological OCD treatment, i.e., cognitive-behavioral therapy (CBT).MethodsStudies were included if they were conducted in adults with OCD and they assessed the neurobiological effects of CBT before and after treatment. Two databases were searched: PsycINFO and PubMed for the time frame up to May 2022.ResultsWe obtained 26 pre-post CBT treatment studies performed using different neurobiological techniques, namely functional magnetic resonance imaging (fMRI), Positron emission tomography (PET), regional cerebral blood flow (rCBF), 5-HT concentration, magnetic resonance imaging (MRI), magnetic resonance spectroscopy (MRS), Electroencephalography (EEG). Neurobiological data show the following after CBT intervention: (i) reduced activations in OFC across fMRI, EEG, and rCBF; (ii) decreased activity in striatum regions across fMRI, rCBF, PET, and MRI; (iii) increased activations in cerebellum (CER) across fMRI and MRI; (iv) enhanced neurochemical concentrations in MRS studies in OFC, anterior cingulate cortex (ACC) and striatum regions. Most of these neurobiological changes are also accompanied by an improvement in symptom severity as assessed by a reduction in the Y-BOCS scores.ConclusionCognitive-behavioral therapy seems to be able to restructure, modify, and transform the neurobiological component of OCD, in addition to the clinical symptoms. Nevertheless, further studies are necessary to frame the OCD spectrum in a dimensional way.

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Background. Health-Related Quality of Life (HRQoL) in patients with chronic kidney disease (CKD) is significantly affected, regardless of the stage of the disease, as regards the physical, psychological and social functioning dimension. Big-Five personality traits can affect patients’ HRQoL and willingness to take treatment options. Illness denial consists of denial of negative emotions, resistance to change and conscious avoidance. No study investigated illness denial and personality traits simultaneously. We investigated the role of illness denial and Big-Five personality traits in the domains of HRQoL in predialysis patients with CKD.Methods. One hundred adults (mean age: 75.87 years) with CKD participated. Poorer HRQoL can predict a higher risk of hospitalization and mortality, and broadly a worse adjustment to the dialytic therapy. Thus, a clearer knowledge of the psychological variables associated with a worse HRQoL in the predialysis stage might improve the interventions planning. The Kidney Disease Quality of Life Short form (KDQOL-SF), the Italian version of Ten Item Personality Inventory (I-TIPI), the Illness Denial Questionnaire (IDQ), and the State-Trait Anxiety Inventory Form-Y (STAI-Y) were administered. Results. Illness denial was associated with increased HRQoL in symptoms, effect, burden of kidney disease and cognitive functions domains, and it was a predictor of higher HRQoL in the last three domains mentioned above. Extraversion was related to better work status and sexual function; agreeableness was linked to elevated cognitive function, quality of social interaction and sexual function; conscientiousness was related to better sexual function; neuroticism was linked to improved cognitive and sexual functions; in the end, openness to experience was related to fewer symptoms and problems.Conclusions. This is the first study which simultaneously assessed Big-Five personality traits and illness denial in different domains of HRQoL of CKD patients. Personalised psychological interventions aimed at improving HRQoL in this population might focus on specific illness denial processes and personality traits.