Granulocyte and monocyte adsorptive apheresis for pyoderma gangrenosum

Pyoderma gangrenosum in ulcerative colitis patient treated with vedolizumab: adsorptive granulocyte/monocyte apheresis as a new therapeutic option refractory cases - a case report and literature review

Extraintestinal manifestations occur rather frequently in ulcerative colitis (UC) and Crohn's disease patients and are usually related to an exacerbation of the underlying intestinal bowel disease but sometimes may run a course independent of the inflammatory bowel diseases (IBD). About one-third of patients with IBD develop extraintestinal manifestations, such as pyoderma gangrenosum (PG). PG is an uncommon inflammatory skin disorder of unknown pathogenesis. There are no specific serological or histological markers, and diagnosis is predominantly clinical. Topical and systemic therapies are both vital aspects of treatment and immune modulators have been used with increasing success in recent years, although immunosuppressive drugs raise some concerns due to an increased risk of serious and opportunistic infections and cancer, particularly in elderly and comorbid patients, underlining the unmet need for safer alternative therapies. Thus, in this case report, we highlighted an adsorptive granulocyte/monocyte apheresis (GMA) as a new therapeutic possibility in IBD patients with extraintestinal manifestations. We report a case of a 60-year woman with a history of UC with a Mayo grade 3 score which was associated with a PG. Given that the patients maintained clinical remission with vedolizumab, we preferred not to perform a combined treatment with other antitumor necrosis factor-alpha or ciclosporin, thus avoiding an increased risk of serious infections in the patient. Therefore, we performed the extracorporeal leukocyte apheresis. The patient progressed favorably, with progressive improvement of skin and bowel disease. Therefore, adsorptive GMA has a very favorable safety profile and has been confirmed in numerous studies. In this study, we underlined that an intensive regimen of GMA paves the way to an ideal option for patients with severe and refractory PG complicated with UC.

Clinical guidance of pyoderma gangrenosum 2022

Pyoderma gangrenosum (PG) is a rare, neutrophilic skin disease. For the purpose of accurate diagnosis and proper treatment of PG, the Japanese clinical practice guidance for PG developed by the Japanese Dermatological Association was published in 2022. In this guidance, clinical aspects, pathogenesis, current therapies, and clinical questions on PG are described from the viewpoints of current knowledge and evidence-based medicine. Here, the English version of the Japanese clinical practice guidelines for PG is presented and is intended to be widely referred to in the clinical examination and treatment of PG.

Targeting neutrophils in inflammatory bowel disease: revisiting the role of adsorptive granulocyte and monocyte apheresis

INTRODUCTION

Inflammatory bowel disease (IBD) is a chronic immune-mediated disease of the gastrointestinal tract comprising Crohn's disease (CD) and ulcerative colitis (UC). While any part of the digestive tract can be affected in CD, mucosal inflammation in UC is limited to the colon. Differences and similarities between the two conditions are reflected by their pathophysiology.

AREAS COVERED

An overview of immunological aspects, pharmacological management, and biomarkers of IBD is provided. The role of adsorptive granulocyte and monocyte apheresis (GMA) is reviewed including its primary and secondary effects on the immune system, as well as clinical studies in IBD (mainly UC), and potential biomarkers for adsorptive GMA.

EXPERT OPINION

In UC, adsorptive GMA with Adacolumn (Adacolumn®, JIMRO Co., Ltd. Takasaki, Gunma, Japan) selectively depletes elevated myeloid lineage leukocytes and has a range of beneficial secondary immune effects. Adsorptive GMA is a safe and effective non-pharmacological treatment option for UC. Pilot studies have reported promising results for adsorptive GMA in combination with biological agents, although larger studies are required. Fecal calprotectin concentrations, neutrophil counts in histological samples and/or the neutrophil/lymphocyte ratio in peripheral blood may prove to be useful biomarkers for predicting GMA effectiveness in the future.

Use of granulocyte and monocyte adsorption apheresis in dermatology (Review)

Adsorptive granulocyte and monocyte apheresis (GMA) is an extracorporeal treatment that selectively removes activated myeloid lineage leukocytes from peripheral blood. This technique consists of a column with cellulose acetate beads as absorptive leukocytapheresis carriers, and was initially used to treat ulcerative colitis. A literature search was conducted to extract recently published studies about the clinical efficacy of GMA in patients with different skin disorders, reporting information on demographics, clinical symptoms, treatment and clinical course. Dermatological diseases, in which GMA has been performed, include generalized pustular psoriasis, pyoderma gangrenosum, palmoplantar pustular psoriasis, Behcet's disease, Sweet's syndrome, adult-onset Still's disease, impetigo herpetiformis, reactive arthritis, acne and hidradenitis suppurativa syndrome, cutaneous allergic vasculitis and systemic lupus erythematosus. In most patients, GMA was started after the failure of conventional therapeutic options and it was helpful in the majority of cases. Based on the information summarized, GMA could be considered a valid non-pharmacological treatment option for patients with several dermatological conditions, which are difficult to treat with other pharmacological preparations.