Kazuo Kusugami ¹, Kenji Ina, Takafumi Ando, Kenji Hibi, Yuji Nishio, Hidemi Goto, J Gastroenterol. 2004 Dec;39(12):1129-37.

Patients with inflammatory bowel disease (IBD) have intestinal and extraintestinal symptoms that can greatly impair their quality of life. They must rely on multiple medications with aminosalicylates, corticosteroids, and purine analogues to control these symptoms. Although decades of clinical experience in IBD management has led to optimized approaches for achieving the induction and maintenance of remission, the disease in some patients is still refractory to conventional medical treatment, or the effectiveness of these drugs can be limited by treatment-related side effects. Significant progress in our understanding of the pathogenesis of IBD has yielded several immunomodulatory approaches with novel biological agents or apparatus, such as cyclosporine, cytoprotective agents, infliximab, and leukocytapheresis. Further immunomodulatoy therapy, aiming at the inhibition of molecular and cellular mediators, is anticipated, in parallel with the clarification of immunoinflammatory pathways in IBD. An additional goal will be to identify factors predictive of response to treatment with each novel immunomodulatory agent or apparatus. This will help provide each patient with optimized and individualized therapy, thereby increasing therapeutic efficacy and reducing possible side effects.

https://pubmed.ncbi.nlm.nih.gov/15622475/

Takeshi Kusaka ¹, Ken Fukunaga, Kunio Ohnishi, Tadashi Kosaka, Toshihiko Tomita, Yoko Yokoyama, Koji Sawada, Yoshihiro Fukuda, Hiroto Miwa, Takayuki Matsumoto J Clin Apher. 2004;19(4):168-73. doi: 10.1002/jca.20023.

Six patients with active Crohn’s disease (CD) unresponsive to conventional medications (CM) were treated with Monocyte-granulocytapheresis (M-GCAP). CD patients who scored 200-400 points in Crohn’s disease activity index (CDAI) in spite of receiving CM, including enteral nutrition, for at least 2 weeks were enrolled in our double series trial. Each series had 5 weekly M-GCAP and 2 follow-up weeks, and each M-GCAP treated 1,800 ml of patient’s peripheral blood. After the 1st series, patients who decreased more than 50 points on the CDAI were deemed responders and enrolled in the second series. Patients with a CDAI score less than 150 points were considered in remission. The patients’ quality of life was evaluated using an index (IBDQ) before and after the 1st series. The CDAI was significantly decreased comparing before and after the 1st series (258.2 +/- 36.2 vs. 166.5 +/- 16.6; P < 0.02). 50% of patients (3/6) responded to the therapy, and one case (16.7%) could be induced to remission. Significant removal was revealed only for white blood cells (25.6 +/- 16.9%; P < 0.05), especially granulocytes (29.5 +/- 22.5%; P < 0.05). A statistically significant improvement of IBDQ was revealed in the responders’ group (162.3 +/- 17.2 vs. 189.3 +/- 11.5; P < 0.03). M-GCAP could be an effective adjunctive therapy for active CD patients unresponsive to CM allowing them to maintain a high QOL. However, it might be difficult to improve patients who could not be induced to remission after the 1st series by applying another series.

https://pubmed.ncbi.nlm.nih.gov/15597346/

Toshihide Ohmori, Akio Yamagiwa, Itaru Nakamura, Kou Nishikawa, Abby R Saniabadi, Am J Gastroenterol. 2003 Sep;98(9):2101-2.

https://pubmed.ncbi.nlm.nih.gov/14499797/

Toshiyuki Matsui, Taku Nishimura, Hiroaki Matake, Tomohiro Ohta, Toshihiro Sakurai, Tsuneyoshi Yao, Am J Gastroenterol. 2003 Feb;98(2):511-2.

https://pubmed.ncbi.nlm.nih.gov/12591086/

Koji Sawada, Dis Colon Rectum. 2003 Oct;46(10 Suppl):S66-77.

 Clinical data suggest that leukocytapheresis might be an effective adjunct to therapy for inflammatory bowel disease to promote remission, taper conventional drug dosage, and potentially reduce the number of patients who require colectomy. The results should further understanding of the pathophysiology of inflammatory bowel disease.

https://pubmed.ncbi.nlm.nih.gov/14530661/

K Yamaji ¹, H Tsuda, H Hashimoto Ther Apher  2001 Aug;5(4):287-92. doi: 10.1046/j.1526-0968.2001.00358.x.

Cytapheresis has been investigated recently for the treatment of autoimmune related diseases, such as rheumatoid arthritis (RA), inflammatory bowel disease (IBD), multiple sclerosis, and so on. A large number of physicians have indicated that patients with autoimmune diseases respond to cytapheresis treatment. The effective mechanism of cytapheresis for immune disorders is still controversial. However, the removal of the leukocyte including granulocyte, lymphocyte, and monocyte may play a crucial role in correcting imbalance of the immune system. A session of cytapheresis including leukocytapheresis (LCAP) and granulocytapheresis (GCAP) may not create a sufficient amount of cell removal for the human body. However, the cell removal can be a trigger of the immunomodulation as the treatment for immune disorder. Furthermore, not only cell removal but also reaction by blood contacting with medical device materials may play a role as an immunomodulation for immune disorders. This review introduces current cytapheresis technologies and attempts to elucidate the effective mechanism of cytapheresis for immune disorders, focused on LCAP and/or GCAP for RA or IBD.

https://pubmed.ncbi.nlm.nih.gov/11724514/