Corrigendum: Cannabis use in the UK: a quantitative comparison of individual differences in medical and recreational cannabis users.

[This corrects the article DOI: 10.3389/fpsyg.2023.1279123.].

Cannabis use in the UK: a quantitative comparison of individual differences in medical and recreational cannabis users.

There is a paucity of research, especially in the UK, that investigates individual differences in both medical and recreational cannabis users. A cross-sectional survey study design was used to assess recreational cannabis users and medical cannabis users currently living in the UK. Recreational cannabis users were invited to take part via social media. Medical cannabis users were recruited from Sapphire Medical Clinics, London, UK, which provides treatment with prescribed cannabis-based medicinal products. Demographic data and cannabis use frequency, as well as post-traumatic stress disorder symptoms (PCL-5), depression symptoms (Centre for Epidemiological Studies Depression Scale), trait and state anxiety (State-Trait Anxiety Inventory), and cannabis use motives [Comprehensive Marijuana Motives Questionnaire (CMMQ)] were collected. The Chi-square and independent-sample t-tests were used for the comparison of categorical variables and normally distributed continuous variables. Data were analyzed using analyses of variance (ANOVAs) and t-tests. Statistical significance was considered where the value of p was <0.05. The survey was completed by 161 participants. Medical cannabis users were older, consumed cannabis more often, had a higher "Sleep" motive on the CMMQ, and had a higher prevalence in self-reporting current diagnoses of neurological problems, mood disorders, and anxiety disorders (p < 0.05). Recreational cannabis users had higher scores on several motives for use (e.g., "Enjoyment," "Coping," "Experimentation," "Boredom," and "Celebration") and higher state anxiety scores (p < 0.05). The most common motives for cannabis use in both groups were "Enjoyment," "Low Risk," and "Sleep." There were no differences between groups in gender, "Low-Risk" motive, post-traumatic stress disorder symptoms, depression scores, trait anxiety scores, self-reported prevalence of substance use-related disorders, and past consumption of alcohol, tobacco, or caffeine (p > 0.05). The current study not only demonstrates a difference in age and motivations for cannabis consumption between recreational and medical cannabis users but also shows areas of potential overlap, including mental health outcomes, past substance use, and gender. These UK-specific findings indicate that recreational cannabis users experience higher state anxiety, highlighting the need for further evaluation of potential anxiogenic/anxiolytic properties of cannabis. These findings demonstrate the importance of researching individual differences in cannabis users and hold significant implications for future research, clinical practice, and legislation.

Perceived Stigma of Patients Undergoing Treatment with Cannabis-Based Medicinal Products.

Cannabis-based medicinal products (CBMPs) are prescribed with increasing frequency. This study aimed to investigate the perceived stigma attached to patients prescribed CBMPs in the UK to establish its prevalence. A qualitative survey was developed by an expert multidisciplinary group and data were collected via Qualtrics. In total, 2319 patients on CBMP therapy were invited to take part in this study. 450 (19.4%) participants completed the questionnaire. In total, 81.3% (n = 366), 76.9% (n = 346), and 61.3% (n = 276) of participants reported feeling very comfortable or comfortable telling friends, family, and medical professionals, respectively, about their treatment. Participants thought that friends (n = 372; 82.7%) and family (n = 339; 75.3%) were very approving or somewhat approving of their CBMP prescription. However, participants thought that only 37.8% (n = 170) of healthcare professionals and 32.9% (n = 148) of society in general were very approving or somewhat approving of their CBMP prescription. 57.1% (n = 257), 55.3% (n = 249), and 40.2% (n = 181) of participants were afraid of what the police or criminal justice system, other government agencies, and healthcare professionals might think about their treatment. This study highlights those patients treated with CBMPs experience a high prevalence of perceived stigma from many corners of society. Future work should be undertaken to explore strategies to reduce perceived stigma at an individual and community level to avoid discrimination of patients, likely increasing appropriate access.

[In vitro acyclovir and cidofovir susceptibilities of human herpesvirus type 1 clinical isolates]. / Analiza wrazliwosci in vitro klinicznych izolatów herpeswirusa czlowieka typu 1 (HIV-1) na acyklowir i cidofowir.

Infections with human herpesviruses types 1 and 2 (HHV-1 and HHV-2) are common worldwide and cause a wide range of signs and symptoms. Antiviral drugs, in particular aciclovir are used in therapy of herpetic infections. The aim of the study was determination of susceptibilities of HHV-1 isolates (n+46) for antiviral drugs (acyclovir and cidofovir) in vitro. Swabs taken from different lesions were used for infection of Vero cells and cythopathic effect was observed. Viruses from cell cultures with positive CPE were later identified with in-house PCR and efficacy of acyclovir and cidofovir in HHV-1 infected Vero cell monolayer cultures was tested by the yield reduction assay. Obtained data indicate, that aciclovir ID50 average value for HHV-1 clinical isolates was 0.74 microg/ml--the value about 10% greater then described in literature. Similarly in vitro analysis of sensitivity of viruses for cidofovir, shows that concentrating is over ten-fold higher in comparison for aciclovir.