Shoichi Nishise ^1 2, Yuji Takeda ³, Yasuhiko Abe ¹, Yu Sasaki ¹, Shinichi Saitoh ³, Hidetoshi Nara ³, Hironobu Asao ³, Yoshiyuki Ueno, Ther Apher Dial 2020 Oct 17.

These results indicated that physiological heating of the apheresis carrier augmented the anti-inflammatory reaction in vitro. Thus, heating during GMA may be a new approach for augmenting clinical efficacy.

https://pubmed.ncbi.nlm.nih.gov/33067913/

Maria K. Skytthe,¹ Jonas Heilskov Graversen,^1,* and Søren K. Moestrup, Int J Mol Sci. 2020 Aug; 21(15): 5497.

In conclusion, the specific targeting of CD163⁺ macrophages has been demonstrated to be a promising drug delivery strategy for handling inflammatory and malignant disease, contributing to the current pharmaceutical therapies.

(nih.gov)https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7432735/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7432735/pdf/ijms-21-05497.pdf

Chie Kurihara, Toshihide Ohmori, Kenichi Inaba, Shunsuke Komoto, Kengo Tomita, Ryota Hokari Gastroenterology 2020 158 (6) Suppl.S-1046

Background: Granulocyte and monocyte adsorptive apheresis (GMA) is non-pharmacological therapy which selective depletion of activated granulocytes and monocytes/macrophages from peripheral blood, and it is used as induction therapy for IBD. However, its therapeutic mechanism has not been well characterized. Recently, it has been reported that Th17 releases chemokines which attract neutrophils, and some neutrophils produce IL17. We investigated that changes in mRNA expression levels of inflammation associated molecules such as cytokines, chemokines in colonic mucosa of ulcerative colitis (UC) patients before and after GMA treatment in order to obtain further understanding of GMA therapeutic mechanisms. Methods: Thirty-two active UC patients (Mayo score ≥ 5 and Mayo endoscopic score ≥ 2) and 10 non-IBD control subjects were enrolled in this study. All UC patients received 10 times of GMA, and colonoscopies were applied before the first GMA and after the last GMA. Control subjects underwent colonoscopies for screening of colon cancer. Assessment of GMA therapeutic efficacy was determined based on Mayo score. Inflammation-related molecules mRNA expressions were determined by quantitative RT-PCR using biopsy specimen of colonic mucosa. Results: GMA treatment efficacy is 11 patients (34.4%) achieved clinical remission, 17 patients (53.1%) were response and 4 patients (12.5%) were non-response. Baseline characteristics such as sex, location of disease, CRP, WBC and Mayo score were not significantly different according to GMA efficacy. In the remission group, mRNA levels in mucosal tissue of IL1β, IL6, IL17, IL23 and GM-CSF which are Th17-asociated cytokines significantly decreased after the last GMA compared to the baseline levels(P<0,05) in contrast, expression of these mRNA tended to increase following GMA treatment in the non-response group. On the other hand, IL12 and IFN- γ which are associated with Th1 did not significantly decrease in the remission group. mRNA levels of leukocyte trafficking associated molecules such as MAdCAM-1, ICAM-1, integrinβ7, IL8 and MIP-1β significantly decreased following GMA treatment in the remission group(P <0.05), whereas only IL8 mRNA expression in the non-response group tended to increase. IL1 β, IL6, GM-CSF which are Th17-asociated cytokines and IL8 mRNA expressions in post-GMA treatment were significantly higher in the non-response group compared to the remission group or control group(P <0.05). Conclusion: In UC patients who achieved clinical remission by GMA, Th17- associated cytokines and leukocyte trafficking associated molecules but not Th1-asociated cytokines decreased significantly. Furthermore, Th17-asociated cytokines increased in the non-responders. These results reaffirm the involvement of neutrophil in the pathophysiology of UC and could be helpful for characterizing of GMA therapeutic mechanism.

https://www.gastrojournal.org/article/S0016-5085(20)33300-X/pdf

Yuko Higashi, Munekazu Yamakuchi, Takuro Kanekura

poster at ISFA 2019 pag 126

Neutrophilic skin diseases are a group of disorders characterized by intense dermal infiltration of neutrophils without infection. They include a variety of diseases, such as pyoderma gangrenosum, pustular psoriasis, and palmoplantar pustulosis. We demonstrated that granulocyte and monocyte adsorption apheresis (GMA) is a useful treatment modality for such refractory skin diseases. Microarray analysis of microRNAs (miRNAs) was performed using sera of patients with neutrophilic skin diseases before and after GMA. Several miRNAs significantly increased in patients compared to control subjects. The expression of three
miRNAs decreased after apheresis, suggesting that these miRNAs might be involved in the pathogenesis of neutrophilic skin decreases. To prove the function of these miRNAs, HL-60, a human acute promyelocytic leukemia cell line, was differentiated by the treatment of alltrans retinoic acid (ATRA). When HL-60 was differentiated to neutrophilic cells, the HEstaining shows an increased cytoplasm to nucleus ratio, condensated chromatin, and nuclear segmentation. The expression of three miRNAs increased during the neutrophilic differentiation. Stimulation of ATRA-treated HL-60 by some cytokines altered miRNA expressions. Moreover, manipulation of these miRNAs changed proliferation of cultured keratinocytes. These data
suggest that miRNAs play an important role in regulating neutrophilic differentiation and proliferation of keratinocytes in case of neutrophilic disorders such as psoriasis. These miRNAs could be markers of disease severity and response of GMA.

Chie Kurihara, Toshihide Ohmori, Hirotaka Furuhashi, Kenichi Inaba, Nao Sugihara, Yoshinori Hanawa, Gastroenterology 2019 156 (6) Suppl. S-1146

Background: Granulocyte and monocyte adsorptive apheresis (GMA) is non-pharmacological therapy which selective depletion of activated granulocytes and monocytes/macrophages from peripheral blood. GMA is effective and safe as induction therapy in ulcerative colitis (UC) of moderate to severe patients, and commonly used in Asia and north Europe. However, therapeutic mechanism of GMA, especially its effect on mucosal healing, has not been well characterized. Since moderate to severe patients with UC sometimes become fulminant, it is important to select an appropriate induction therapy. GMA treatment efficacy is reported about 60% patients respond, whereas, there is not useful parameter that predicts GMA therapeutic efficacy before treatment. In this study, we attempted to identify predictive factors of clinical response to GMA treatment in UC patients. Methods: Thirty-two active UC patients (Mayo score ^ 5 and Mayo endoscopic score ^ 2) and 10 non-IBD control subjects were enrolled in this study. All UC patients received 10 or 11 times of GMA, and colonoscopies were applied before the first GMA and after the last GMA. Control subjects underwent colonoscopies for screening of colon cancer. Assessment of disease activity and colonic mucosal healing were determined based on Mayo score. Inflammation-related molecules mRNA expressions were determined by quantitative RT-PCR using biopsy specimen of colonic mucosa. ROC curves analysis was used to assess sensitivity and specificity in prediction of GMA therapeutic efficacy. Results: GMA treatment efficacy is 11 patients (34.4%) achieved clinical remission, 17 patients (53.1%) were response and 4 patients (12.5%) were non-response. Mucosal healing was observed in 18 patients (56.3%) and it was not observed in 14 patients (43.7%). Baseline characteristics were not significantly different according to GMA efficacy. Before the first GMA session, the clinical remission group showed significantly higher expressions of TNFα, MAdCAM-1 and MIP-1β mRNA than those of the non-response group (P <0.05). Patients in the response group who highly expressed these mRNA achieved mucosal healing. In the mucosal healing group, the mRNA levels of TNFα, IL-1β, IL-8, MIP-1β, TGFβ and IL-10 were significantly higher than those in the non-mucosal healing group (P <0.05). TNFα and MIP-1β had 0.83 and 0.79 of area under the curve with 83.3% and 66.7% sensitivity, 71.4% and 100% specificity, 78.9% and 100%positive predictive value, and 76.9% and 70.0% negative predictive value, respectively, for prediction of mucosal healing. Conclusion: Mucosal expression of TNFα and MIP-1β mRNA before treatment in the remission group and the mucosal healing group was significantly higher than non-responder to GMA treatment. We propose that measuring of these molecules’ expression is useful to expect GMA therapeutic efficacy in patients with UC.

https://www.gastrojournal.org/action/doSearch?text1=granulocyte+and+monocyte+apheresis+&field1=AllField&AfterYear=2018&BeforeYear=2021&pageSize=50&startPage=&SeriesKey=ygast

Takahiro Shimoyama ¹, Takayuki Yamamoto ², Satoru Umegae ¹, Koichi Matsumoto ¹ , BMC Gastroenterol. 2018 Aug 1;18(1):120.

Our findings indicate that FC is a relevant biomarker, which is convenient to measure for assessing endoscopic activity and predicting relapse in patients who achieve remission following a course of GMA therapy.

https://pubmed.ncbi.nlm.nih.gov/30068300/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6090982/pdf/12876_2018_Article_853.pdf

Shoichi Nishise ¹, Yuji Takeda ², Hidetoshi Nara ², Yasuhiko Abe ¹, Yu Sasaki ¹, Hironobu Asao ², Yoshiyuki Ueno ¹ , Ther Apher Dial. 2018 Jun;22(3):261-265.

These results suggest that independent of incubation temperature, sICAM-1 and sVCAM-1 are likely to adsorb CA beads. These molecules may be a new index for predicting the therapeutic effects of GMA.

https://pubmed.ncbi.nlm.nih.gov/29745046/

Helena Rolandsdotter ^1 2, Michael Eberhardson ^1 3, Ulrika L Fagerberg ^4 5, Yigael Finkel ^1 2 , J Pediatr Gastroenterol Nutr 2018 Jan;66(1):84-89.

Objective: The aim of the study was to analyze the effect of granulocyte and monocyte apheresis (GMA) with mesalazine for induction of remission in pediatric patients with newly onset chronic inflammatory bowel disease (IBD) colitis. Methods: Thirteen pediatric patients with newly onset extensive IBD colitis were investigated per the ECCO/ESPGHAN IBD protocol. Of these 13, 12 received 10 treatments with Adacolumn (ADA) during a median of 6.25 weeks in combination with low-to-moderate doses of mesalazine, which was continued after apheresis. A control colonoscopy was performed 12 to 16 weeks after GMA treatment. Primary outcomes were mucosal healing (Mayo endoscopic score) and histopathologic grading of biopsies. A secondary outcome was disease activity as measured by the Pediatric Ulcerative Colitis Activity Index. Results: Twelve children (6 girls) with a median age of 14.6 years and a median duration of symptoms at diagnosis of 3.2 months received all planned 10 treatment sessions with ADA. Ten of 12 patients had pancolitis and 2 of 12 extensive colitis. A final diagnosis, however, indicated ulcerative colitis in 10 children and Crohn disease in 2 children. At control colonoscopy, 8 of 12 children were in clinical remission and the Mayo endoscopic score showed significant improvement in 9 of 12 patients (P = 0.006). Complete microscopic remission, according to the Geboes score, was observed in 2 patients. Conclusions: In this small study GMA for induction of remission of newly onset pediatric IBD colitis was effective in 8 of 12 patients. Further controlled studies are warranted to confirm the efficacy of this treatment model.

https://pubmed.ncbi.nlm.nih.gov/28604509/

Helena Rolandsdotter ^1 2, Kerstin Jönsson-Videsäter ^3 4, Ulrika L Fagerberg ^5 6, Michael Eberhardson ^1 7, Yigael Finkel ^1 2 , J Pediatr Gastroenterol Nutr. 2018 Apr;66(4):e103-e107.

We speculate that the decreases in colonic mucosal cytokine profiles after treatment may explain the observed clinical efficacy in the GMA-treated children with IBD.

https://pubmed.ncbi.nlm.nih.gov/28891831/

Belén Beltrán ^1 2 3, Esteban Sáez-González ¹, Inés Moret ^1 2 3, Francia C Díaz-Jaime ¹, Diego Alvarez-Sotomayor ¹, Elena Cerrillo ^1 2, Marisa Iborra ^1 2 3, Guillermo Bastida ^1 2 3, Mariam Aguas ^1 2 3, Pilar Nos ^1 2 3 , J Clin Apher. 2018 Feb;33(1):99-103

We hypothesize that GMA can help to lower the inflammatory load, thereby enhancing the effect of biologic drugs. 

https://pubmed.ncbi.nlm.nih.gov/28485025/