Optimizing acitretin use in patients with plaque psoriasis

Cannabinoid Compounds as a Pharmacotherapeutic Option for the Treatment of Non-Cancer Skin Diseases

The endocannabinoid system has been shown to be involved in various skin functions, such as melanogenesis and the maintenance of redox balance in skin cells exposed to UV radiation, as well as barrier functions, sebaceous gland activity, wound healing and the skin's immune response. In addition to the potential use of cannabinoids in the treatment and prevention of skin cancer, cannabinoid compounds and derivatives are of interest as potential systemic and topical applications for the treatment of various inflammatory, fibrotic and pruritic skin conditions. In this context, cannabinoid compounds have been successfully tested as a therapeutic option for the treatment of androgenetic alopecia, atopic and seborrhoeic dermatitis, dermatomyositis, asteatotic and atopic eczema, uraemic pruritis, scalp psoriasis, systemic sclerosis and venous leg ulcers. This review provides an insight into the current literature on cannabinoid compounds as potential medicines for the treatment of skin diseases.

Consensus statements for pharmacological management, monitoring of therapies, and comorbidity management of psoriatic arthritis in the United Arab Emirates

OBJECTIVE

Psoriatic arthritis (PsA), a chronic inflammatory disease characterized by heterogeneous clinical manifestations, substantially impacts the quality of life of affected individuals. This article aims at developing consensus recommendations for the management of PsA and associated comorbidities and screening and monitoring requirements of PsA therapies in the United Arab Emirates (UAE) population.

METHODS

An extensive review of present international and regional guidelines and publications on the pharmacological management, monitoring of therapies in the context of PsA was performed. Key findings from guidelines and literature were reviewed by a panel of experts from the UAE at several meetings to align with current clinical practices. Consensus statements were formulated based on collective agreement of the experts and members of Emirates Society for Rheumatology.

RESULTS

The consensus recommendations were developed to aid practitioners in clinical decision-making with respect to dosage recommendations for pharmacological therapies for PsA, including conventional drugs, non-biologic, and biologic therapies. Consensus recommendations for therapeutic options for the treatment of PsA domains, including peripheral arthritis, axial disease, enthesitis, dactylitis, psoriasis, and nail disease, were developed. The panel emphasized the importance of monitoring PsA therapies and arrived at a consensus on monitoring requirements for PsA therapies. The expert panel proposed recommendations for the management of common comorbidities associated with PsA.

CONCLUSION

These consensus recommendations can guide physicians and healthcare professionals in the UAE in making proper treatment decisions, as well as efficiently managing comorbidities and monitoring therapies in patients with PsA.

Vitamin A, systemic T-cells, and the eye: Focus on degenerative retinal disease

The first discovered vitamin, vitamin A, exists in a range of forms, primarily retinoids and provitamin carotenoids. The bioactive forms of vitamin A, retinol and retinoic acid, have many critical functions in body systems including the eye and immune system. Vitamin A deficiency is associated with dysfunctional immunity, and presents clinically as a characteristic ocular syndrome, xerophthalmia. The immune functions of vitamin A extend to the gut, where microbiome interactions and nutritional retinoids and carotenoids contribute to the balance of T cell differentiation, thereby determining immune status and contributing to inflammatory disease around the whole body. In the eye, degenerative conditions affecting the retina and uvea are influenced by vitamin A. Stargardt’s disease (STGD1; MIM 248200) is characterised by bisretinoid deposits such as lipofuscin, produced by retinal photoreceptors as they use and recycle a vitamin A-derived chromophore. Age-related macular degeneration features comparable retinal deposits, such as drusen featuring lipofuscin accumulation; and is characterised by parainflammatory processes. We hypothesise that local parainflammatory processes secondary to lipofuscin deposition in the retina are mediated by T cells interacting with dietary vitamin A derivatives and the gut microbiome, and outline the current evidence for this. No cures exist for Stargardt’s or age-related macular degeneration, but many vitamin A-based therapeutic approaches have been or are being trialled. The relationship between vitamin A’s functions in systemic immunology and the eye could be further exploited, and further research may seek to leverage the interactions of the gut-eye immunological axis.

Efficacy and Safety of Tripterygium Wilfordii Glycoside Tablets Combined with Acitretin Capsules in the Treatment of Moderate to Severe Plaque Psoriasis: A Randomized Controlled Trial

Objective

To probe into the clinical efficacy of tripterygium wilfordii glycoside (TWGs) tablets combined with acitretin capsules in the treatment of patients with moderate to severe plaque psoriasis (MSPP).

Methods

Thirty-six patients with MSPP were collected and divided into three groups, namely, group A (n = 12, TWG tablets + acitretin capsules), group B (n = 12, compound glycyrrhizin capsules + acitretin capsules), and group C (n = 12, acitretin capsules). The general data of the patients was recorded. In addition, a comparison was made before treatment, 4 weeks and 8 weeks after treatment in terms of the clinical efficacy, liver function indicators (alanine aminotransferase (ALT), aspartate transaminase (AST), and creatinine), psoriasis area, and severity index (PASI) scores. The incidence of adverse reactions after treatment and the recurrence rate during two months of follow-up was statistically analyzed.

Results

The therapeutic effect of group A was superior to the other two groups, with obviously more satisfactory results of serum parameters, clinical efficacy and PASI score, and incidence of adverse reactions.

Conclusions

TWGs combined with acitretin had better therapeutic effects and higher safety in the treatment of MSPP.

A real-life experience as a proof of Guselkumab effectiveness and safety in patients with moderate to severe psoriasis

Psoriasis is a skin disorder characterized by chronic inflammation driven by different immunologic pathways, among which the IL-23/Th17 axis plays a pivotal role. For this reason, the use of IL23p19 inhibitors in psoriasis treatment has been evaluated over the years. Guselkumab, a totally human IgG1 lambda monoclonal antibody, that selectively blocks the p 19 subunit of IL- 23 has demonstrated high efficacy and safety throughout several, randomized, double-blind phase III trials (VOYAGE 1 and 2, NAVIGATE and ECLIPSE). We designed a single-center retrospective cohort study in a population consisting of 46 patients followed from December 2018 to April 2021. After a diagnosis of moderate to severe psoriasis, all the patients were considered suitable to receive treatment with Guselkumab. In our population, among those who achieved clinical improvement in terms of Psoriasis Area Severity Index (PASI), PASI 75,90, and 100 were achieved on average on weeks 14,19,21 respectively. We then analyzed a subgroup of our population, consisting of 35 patients, who had an identical follow-up time of 28 weeks, thus observing the trend in mean PASI at subsequent assessments and the number of patients who had reached PASI 75, PASI 90, and PASI 100 at week 4 (10; 3;1), week 12 (12; 13; 11), week 20 (7;6;2) and week 28 (1;4;6), respectively. The results obtained are in line with those obtained from previous studies, thus confirming that Guselkumab is an excellent choice in terms of security, long-term efficacy and overall tolerance.

Acitretin-Conjugated Dextran Nanoparticles Ameliorate Psoriasis-like Skin Disease at Low Dosages

Psoriasis is a common chronic inflammatory skin disease mainly characterized by keratinocyte hyperproliferation and massive infiltration of inflammatory immune cells. Acitretin (ACT), an FDA-approved first-line systemic drug for psoriasis treatment, could suppress the proliferation of keratinocytes and downregulate the expression of inflammatory cytokines by modulating signal transducer and activator of transcription (STAT) signaling pathways. However, dose-dependent side effects of ACT limit its long-term administration in the clinic. Therefore, improving the therapeutic efficacy of ACT to reduce clinical dosage will benefit the patients. Here, we develop ACT-conjugated dextran nanoparticles (ACT-Dex NPs) and evaluated the potential for psoriasis treatment. Our results indicate that ACT-Dex NPs ameliorate psoriasis-like skin disease significantly at a low dosage which does not cause side effects, while neat ACT drugs at an equivalent dosage provide much less benefit. Moreover, we demonstrate that ACT-Dex NPs suppress keratinocyte proliferation more efficiently than neat ACT by enhancing the inhibitory effect on STAT3 phosphorylation. Thus, the proposed ACT-Dex NPs provide an effective and safe option for psoriasis treatment.

Vitamin A Update: Forms, Sources, Kinetics, Detection, Function, Deficiency, Therapeutic Use and Toxicity

Vitamin A is a group of vital micronutrients widely present in the human diet. Animal-based products are a rich source of the retinyl ester form of the vitamin, while vegetables and fruits contain carotenoids, most of which are provitamin A. Vitamin A plays a key role in the correct functioning of multiple physiological functions. The human organism can metabolize natural forms of vitamin A and provitamin A into biologically active forms (retinol, retinal, retinoic acid), which interact with multiple molecular targets, including nuclear receptors, opsin in the retina and, according to the latest research, also some enzymes. In this review, we aim to provide a complex view on the present knowledge about vitamin A ranging from its sources through its physiological functions to consequences of its deficiency and metabolic fate up to possible pharmacological administration and potential toxicity. Current analytical methods used for its detection in real samples are included as well.

Efficacy and safety of fixed-dose combination calcipotriol/betamethasone dipropionate foam for the treatment of psoriasis

The fixed-dose combination calcipotriol (Cal; 50 µg/g) plus betamethasone dipropionate (BD; 0.5 mg/g) ointment and gel formulations have well-established efficacy profiles in the treatment of psoriasis vulgaris (chronic plaque psoriasis); this combination has been shown to produce favourable outcomes versus either monotherapy. To improve upon the efficacy and cosmetic acceptability of these treatments Cal/BD foam was developed, demonstrating superior efficacy in Phase II/III studies compared with either of its monocomponents, Cal/BD ointment, Cal/BD gel and various other therapies for the treatment of psoriasis. Multiple outcome measures were evaluated in the clinical studies, including physician's global assessment of disease severity and modified psoriasis area and severity index. Of note, 38-55% of patients across studies achieved a physician's global assessment of 'clear' or 'almost clear' after 4 weeks of Cal/BD treatment. This superior efficacy was not associated with an increased frequency or severity of adverse events, and there was no evidence for dysregulation of the hypothalamic-pituitary-adrenal axis or calcium homeostasis. Overall, Cal/BD foam was efficacious, with a good tolerability profile consistent with established Cal/BD formulations.

Cost per PASI-75 responder of calcipotriol plus betamethasone dipropionate cutaneous foam versus nonbiologic systemic therapies for the treatment of plaque psoriasis in seven European countries

Purpose: To compare the short-term cost and effectiveness of calcipotriol/betamethasone dipropionate (Cal/BD) cutaneous foam against nonbiologic systemics in psoriasis patients for whom oral systemic or topical therapy is considered appropriate in seven European countries.Methods: Matching-adjusted indirect comparisons of four-week PASI-75 responses of Cal/BD foam were performed versus 12-week responses of methotrexate, acitretin, fumaric acid esters (FAE) and 16-week responses of apremilast. Analyses took a payer perspective and included drug, physician visit and monitoring costs.Results: In all countries, Cal/BD foam generated the lowest cost per responder (CPR). Against methotrexate, apremilast and acitretin, Cal/BD foam generated response for less than €190 in Italy, €195 in Portugal, €216 in Greece, £218 in the United Kingdom, €250 in Belgium, €319 in Spain, and €359 in the Netherlands. Relative to treatment with FAE, Cal/BD foam resulted in response for less than €298, €430, €382 and £262 in Belgium, the Netherlands, Spain and the United Kingdom, respectively. For Cal/BD foam, apremilast and FAE, total costs were driven by drug costs; for methotrexate and acitretin, by monitoring.Conclusions: Driven by its lower costs and high response rates, Cal/BD foam is likely to be a cost-effective option over the short-term in the investigated psoriasis population.

Calcipotriol plus betamethasone dipropionate aerosol foam vs. apremilast, methotrexate, acitretin or fumaric acid esters for the treatment of plaque psoriasis: a matching-adjusted indirect comparison

BACKGROUND

Plaque psoriasis has significant impact on patients' quality of life. Topical therapy is considered the treatment mainstay for mild-to-moderate disease according to guidelines. Calcipotriol/betamethasone dipropionate (Cal/BD) [0.005%/0.05%] aerosol foam is indicated for psoriasis vulgaris treatment in adults. Cal/BD foam trials demonstrated improved efficacy and similar safety in this population. Psoriasis treatment is complicated by the broad range of disease presentation, variability and therapeutic options; particularly decisions on transition from topical to non-biologic systemic treatment are difficult. Assessing comparative effectiveness of treatment options provides meaningful value to treatment decisions.

OBJECTIVE

To compare efficacy of Cal/BD foam individual patient data from pooled trials with efficacy of non-biologic systemic treatments based on aggregated patient characteristics and treatment outcomes.

METHODS

Individual data from four Cal/BD foam trials in 749 psoriasis patients were pooled to conduct matching-adjusted indirect comparisons. Literature review identified non-biologic systemic treatment trials where methods, populations and outcomes align with Cal/BD foam trials. Of 3090 screened publications, four studies of apremilast, methotrexate, acitretin or fumaric acid esters (FAE) were included.

RESULTS

After baseline matching, patients treated with 4 weeks of Cal/BD foam had greater Physician's Global Assessment 0/1 response compared to those treated with 16 weeks of apremilast (52.7% vs. 30.4%; P < 0.001). Patients treated with Cal/BD foam had significantly greater Psoriasis Area and Severity Index (PASI) 75 response at Week 4 compared to 16 weeks of apremilast treatment (51.1% vs. 21.6%; P < 0.001). Cal/BD foam patients demonstrated significantly greater PASI 75 response improvements at Week 4 vs. 12 weeks of methotrexate (50.8% vs. 33.5%; P < 0.001) or acitretin (50.9% vs. 31.7%; P = 0.009), and comparable response to FAE (42.4% vs. 47.0%; P = 0.451).

CONCLUSIONS

Despite recent treatment advances, unmet needs for psoriasis patients remain. Cal/BD foam offers improved efficacy in baseline matched psoriasis patients compared to apremilast, methotrexate or acitretin, and comparable efficacy to FAE.

Long-term safety and drug survival of acitretin in psoriasis: a retrospective observational study

BACKGROUND

This retrospective observational study aimed to investigate the long-term safety, drug survival, and factors associated with the survival of acitretin in a real-world setting.

METHODS

Data of adult patients with psoriasis who attended Siriraj Hospital between 2012 and 2017 and were treated with acitretin were reviewed. Demographic data and clinical courses were recorded. The Kaplan-Meier curve and Cox regression were used to calculate drug survival and the factors associated with drug survival, respectively.

RESULTS

Of 104 patients, 56 and 48 were male and female, respectively, with a mean treatment duration of 3.2 years. The mean cumulative dose per patient was 19.28 ± 7.84 mg/day. Acitretin was administered to 73, 39, 24, and six patients for more than 1, 3, 5, and 10 years, respectively. Most side effects were mild and tolerable; only nine patients withdrew acitretin due to side effects. No patients developed clinical features of cirrhosis or uncontrolled hyperlipidemia. The drug survival rates were 79%, 69.5%, 61.2%, 57.6%, and 53.5% at 1, 2, 3, 4, and 5 years, respectively, higher than those of previous studies. Patients without obesity, metabolic syndrome, and dyslipidemia did not have a significantly longer acitretin survival compared to patients with these comorbidities.

CONCLUSIONS

Long-term, low-dose acitretin in patients with psoriasis is unlikely to cause significant liver or lipid problems. In countries with difficulty accessing biological agents for psoriasis, acitretin may have a high drug survival rate due to its long-term safety. This study has several limitations: its retrospective nature, single-center study design, and small sample size.