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Article: Characteristic endoscopic findings in early-stage autoimmune gastritis.

Kotera, Tohru / Ayaki, Maki / Sumi, Naoki / Aoki, Rika / Mabe, Katsuhiro / Inoue, Kazuhiko / Manabe, Noriaki / Kamada, Tomoari / Kushima, Ryoji / Haruma, Ken

Endoscopy international open

2024 Volume 12, Issue 3, Page(s) E332–E338

Abstract: Background and study ... ...

Abstract	Background and study aims
Language	English
Publishing date	2024-03-07
Publishing country	Germany
Document type	Journal Article
ZDB-ID	2761052-4
ISSN	2196-9736 ; 2364-3722
ISSN (online)	2196-9736
ISSN	2364-3722
DOI	10.1055/a-2215-3284
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Article ; Online: An Evaluation of Endoscopic Images from Over 15 Years Prior to the Diagnosis of Autoimmune Gastritis: A Report of Three Patients.

Ayaki, Maki / Manabe, Noriaki / Murota, Masayuki / Fujita, Minoru / Haruma, Ken

Internal medicine (Tokyo, Japan)

2021 Volume 61, Issue 6, Page(s) 827–833

Abstract: We herein describe three patients whose endoscopic images from over 15 years prior to their diagnosis of autoimmune gastritis (AIG) were available for review. All patients had corpus-dominant atrophic gastritis at the time of the diagnosis of AIG. ... ...

Abstract	We herein describe three patients whose endoscopic images from over 15 years prior to their diagnosis of autoimmune gastritis (AIG) were available for review. All patients had corpus-dominant atrophic gastritis at the time of the diagnosis of AIG. Previous endoscopic images without severe atrophy showed erythema restricted to the fundic mucosa. These findings are suggestive of ongoing gastritis in patients with AIG. Initial endoscopy in Patient 2 showed multiple hyperplastic polyps that decreased in size and number over the course of 15 years. In this patient, circular wrinkle-like patterns and remnant oxyntic mucosa were visible after the atrophy had become quite prominent.
MeSH term(s)	Autoimmune Diseases/diagnostic imaging ; Autoimmune Diseases/pathology ; Endoscopy, Gastrointestinal ; Gastric Mucosa/diagnostic imaging ; Gastric Mucosa/pathology ; Gastritis/diagnostic imaging ; Gastritis/pathology ; Gastritis, Atrophic/diagnostic imaging ; Gastritis, Atrophic/pathology ; Humans ; Polyps/pathology
Language	English
Publishing date	2021-09-04
Publishing country	Japan
Document type	Case Reports ; Journal Article
ZDB-ID	32371-8
ISSN	1349-7235 ; 0021-5120 ; 0918-2918
ISSN (online)	1349-7235
ISSN	0021-5120 ; 0918-2918
DOI	10.2169/internalmedicine.8178-21
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Article ; Online: A Retrospective Study of the Differences in the Induction of Regulatory T Cells Between Adult Patients with Eosinophilic Esophagitis and Gastroesophageal Reflux Disease.

Ayaki, Maki / Manabe, Noriaki / Nakamura, Jun / Fujita, Minoru / Katsumata, Ryo / Haruma, Ken

Digestive diseases and sciences

2022 Volume 67, Issue 10, Page(s) 4742–4748

Abstract: Background: The incidence of eosinophilic esophagitis (EoE), a Th2-type allergic disease of the esophagus, has increased with the higher prevalence of gastroesophageal reflux disease (GERD). Both conditions are chronic inflammatory diseases with similar ...

Abstract	Background: The incidence of eosinophilic esophagitis (EoE), a Th2-type allergic disease of the esophagus, has increased with the higher prevalence of gastroesophageal reflux disease (GERD). Both conditions are chronic inflammatory diseases with similar clinical presentations, yet their pathogenesis is thought to differ. Recent evidence indicates that forkhead box P3 (FOXP3)-positive regulatory T cells (Tregs) play a critical role in immune tolerance and control of Th2-biased responses in various allergic diseases. Aims: This study aimed to investigate differences in Treg induction between EoE and GERD and clarify whether this difference was related to the clinicopathological findings of patients with EoE. Methods: Thirty patients (15 men, 15 women) with EoE and 30 patients (15 men, 15 women) with GERD were included. Patient characteristics, including endoscopic and pathological findings, were compared between the two groups. Immunohistochemistry staining was used to identify T lymphocytes and Tregs. Tregs were identified by CD3 + FOXP3 + staining, and T cells were defined as CD3 + cells. The number of T cells and Tregs in the epithelium was counted, and the average of Tregs/T cells was calculated. Results: The ratio of Tregs/CD3 + T cells in the esophageal epithelium was significantly lower in the EoE group than in the GERD group (9.9% vs. 23.6%, P = 0.0000012). Comparison of the ratio of Tregs/CD3 + T cells by age, gender, endoscopic findings, and histological findings in patients with EoE revealed a significant difference in gender. Conclusions: Treg induction was impaired, and this effect was more pronounced in male adult patients with EoE than those with GERD.
MeSH term(s)	Adult ; Enteritis ; Eosinophilia ; Eosinophilic Esophagitis/pathology ; Female ; Forkhead Transcription Factors ; Gastritis ; Gastroesophageal Reflux/pathology ; Humans ; Male ; Retrospective Studies ; T-Lymphocytes, Regulatory/pathology
Chemical Substances	Forkhead Transcription Factors
Language	English
Publishing date	2022-01-15
Publishing country	United States
Document type	Journal Article
ZDB-ID	304250-9
ISSN	1573-2568 ; 0163-2116
ISSN (online)	1573-2568
ISSN	0163-2116
DOI	10.1007/s10620-021-07355-x
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Article ; Online: Clinical characteristics and manometric findings of esophageal achalasia-a systematic review regarding differences among three subtypes.

Katsumata, Ryo / Manabe, Noriaki / Sakae, Hiroyuki / Hamada, Kenta / Ayaki, Maki / Murao, Takahisa / Fujita, Minoru / Kamada, Tomoari / Kawamoto, Hirofumi / Haruma, Ken

Journal of smooth muscle research = Nihon Heikatsukin Gakkai kikanshi

2023 Volume 59, Page(s) 14–27

Abstract: Esophageal achalasia is classified into three subtypes according to manometric findings. Since several factors, including clinical characteristics and treatment response, have been reported to differ among the subtypes, the underlying pathogenesis may ... ...

Abstract	Esophageal achalasia is classified into three subtypes according to manometric findings. Since several factors, including clinical characteristics and treatment response, have been reported to differ among the subtypes, the underlying pathogenesis may also differ. However, a comprehensive understanding regarding the differences is still lacking. We therefore performed a systematic review of the differences among the three subtypes of achalasia to clarify the current level of comprehension. In terms of clinical features, type III, which is the least frequently diagnosed of the three subtypes, showed the oldest age and most severe symptoms, such as chest pain. In contrast, type I showed a higher prevalence of lung complications, and type II showed weight loss more frequently than the other types. Histopathologically, type I showed a high loss of ganglion cells in esophagus, and on a molecular basis, type III had elevated serum pro-inflammatory cytokine levels. In addition to peristalsis and the lower esophageal sphincter (LES) function, the upper esophageal sphincter (UES) function of achalasia has attracted attention, as an impaired UES function is associated with severe aspiration pneumonia, a fatal complication of achalasia. Previous studies have indicated that type II shows a higher UES pressure than the other subtypes, while an earlier decline in the UES function has been confirmed in type I. Differences in the treatment response are also crucial for managing achalasia patients. A number of studies have reported better responses in type II cases and less favorable responses in type III cases to pneumatic dilatation. These differences help shed light on the pathogenesis of achalasia and support its clinical management according to the subtype.
MeSH term(s)	Humans ; Esophageal Achalasia/therapy ; Esophageal Achalasia/diagnosis ; Manometry ; Esophageal Sphincter, Lower ; Esophageal Sphincter, Upper ; Chest Pain
Language	English
Publishing date	2023-03-22
Publishing country	Japan
Document type	Systematic Review ; Journal Article
ISSN	1884-8796
ISSN (online)	1884-8796
DOI	10.1540/jsmr.59.14
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Article: Development, Disappearance, and Clinical Course of Melanosis Coli: Sex Differences in the Progression of Severity.

Katsumata, Ryo / Manabe, Noriaki / Monobe, Yasumasa / Ayaki, Maki / Suehiro, Mitsuhiko / Fujita, Minoru / Kamada, Tomoari / Kawamoto, Hirofumi / Haruma, Ken

Acta medica Okayama

2023 Volume 77, Issue 1, Page(s) 57–64

Abstract: Melanosis coli (MC) is an acquired colorectal disorder visualized as colonic mucosa pigmentation. Disease severity is confirmed based on MC depth, shape, and coloration, although the clinical course is not fully understood. This study sought to clarify ... ...

Abstract	Melanosis coli (MC) is an acquired colorectal disorder visualized as colonic mucosa pigmentation. Disease severity is confirmed based on MC depth, shape, and coloration, although the clinical course is not fully understood. This study sought to clarify characteristics of MC development and disappearance and to investigate its clinical course and severity. Contributors to MC grade progression were explored. This study reviewed MC cases discovered via colonoscopy at a single institution over a 10-year period. Of all 216 MC cases, 17 developing and 10 disappearing cases were detected. Anthranoid laxative use was a key factor: 29.4% of the developing cases had used such agents before the initial MC diagnosis, whereas 40% of disappearing cases had discontinued anthranoids prior to detection of MC disappearance. Among 70 grade I cases, progression to grade II occurred in 16 cases during a mean follow-up of 3.67±2.1 years (rate of progression=22.8%). Males more commonly showed progressive than stable grade I cases, and the probability of progression was higher for male than for female cases. An association between anthranoid administration and MC presence was presumed, and grade I MC was found to progress in severity over 5 years.
MeSH term(s)	Female ; Humans ; Male ; Sex Characteristics ; Melanosis/diagnosis ; Colonoscopy ; Anthraquinones ; Disease Progression
Chemical Substances	Anthraquinones
Language	English
Publishing date	2023-02-27
Publishing country	Japan
Document type	Journal Article
ZDB-ID	188415-3
ISSN	0386-300X ; 0001-6152
ISSN	0386-300X ; 0001-6152
DOI	10.18926/AMO/64362
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Article ; Online: A case of nodular gastritis progression to autoimmune gastritis after 10 years of Helicobacter pylori eradication.

Sumi, Naoki / Haruma, Ken / Inoue, Kazuhiko / Hisamoto, Nobumi / Mabe, Katsuhiro / Sasai, Takako / Ichiba, Toshio / Ayaki, Maki / Manabe, Noriaki / Takao, Toshihiro

Clinical journal of gastroenterology

2023 Volume 17, Issue 2, Page(s) 216–221

Abstract: A 61-year-old female patient underwent upper gastrointestinal endoscopy, which confirmed the presence of Helicobacter pylori (H. pylori)-positive nodular gastritis (NG). Routine upper gastrointestinal endoscopy after H. pylori eradication revealed ... ...

Abstract	A 61-year-old female patient underwent upper gastrointestinal endoscopy, which confirmed the presence of Helicobacter pylori (H. pylori)-positive nodular gastritis (NG). Routine upper gastrointestinal endoscopy after H. pylori eradication revealed atrophic changes of the corpus, having gradually progressed over the 10 years after successful eradication. Serological and biopsy specimen examination showed hypergastrinemia (1200 pg/mL), positive anti-parietal cell antibody (with a titer of more 160), and endocrine cell micronests after 11 years of H. pylori eradication. The patient was diagnosed with autoimmune gastritis (AIG) based on endoscopic, serological, and histological findings. This is the first report of AIG diagnosed in a patient with NG over a long period of time after H. pylori eradication.
MeSH term(s)	Female ; Humans ; Middle Aged ; Helicobacter pylori ; Gastritis, Atrophic/complications ; Gastritis, Atrophic/drug therapy ; Gastritis, Atrophic/pathology ; Gastritis/drug therapy ; Helicobacter Infections/complications ; Helicobacter Infections/drug therapy ; Atrophy
Language	English
Publishing date	2023-12-11
Publishing country	Japan
Document type	Case Reports ; Journal Article
ZDB-ID	2429411-1
ISSN	1865-7265 ; 1865-7257
ISSN (online)	1865-7265
ISSN	1865-7257
DOI	10.1007/s12328-023-01897-5
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Article ; Online: A case of eosinophilic esophagitis with autoimmune polyendocrine syndrome type 2, including autoimmune gastritis.

Ayaki, Maki / Manabe, Noriaki / Fujita, Minoru / Nakamura, Jun / Sunago, Aya / Kamada, Tomoari / Haruma, Ken

Clinical journal of gastroenterology

2021 Volume 14, Issue 2, Page(s) 460–465

Abstract: Both eosinophilic esophagitis (EoE) and autoimmune polyendocrine syndrome (APS) are relatively rare diseases in Japan. We herein report a case of EoE with APS in a 67-year-old Japanese man who presented with chest pain and dysphagia. On the basis of ... ...

Abstract	Both eosinophilic esophagitis (EoE) and autoimmune polyendocrine syndrome (APS) are relatively rare diseases in Japan. We herein report a case of EoE with APS in a 67-year-old Japanese man who presented with chest pain and dysphagia. On the basis of endoscopic findings and histological analysis, we diagnosed the patient with EoE along with autoimmune gastritis. Additional serological examinations revealed the presence of Hashimoto's thyroiditis and type 1 diabetes, which led to the final diagnosis of APS. His symptoms did not respond to treatment with a proton-pump inhibitor but improved with topical steroid therapy. This case of coexisting EoE and APS-2 is quite rare and has several implications for the pathogenesis of both conditions.
MeSH term(s)	Aged ; Diabetes Mellitus, Type 2 ; Eosinophilic Esophagitis/complications ; Eosinophilic Esophagitis/diagnosis ; Eosinophilic Esophagitis/drug therapy ; Gastritis/complications ; Gastritis/diagnosis ; Gastritis/drug therapy ; Humans ; Japan ; Male ; Polyendocrinopathies, Autoimmune/complications ; Polyendocrinopathies, Autoimmune/diagnosis ; Polyendocrinopathies, Autoimmune/drug therapy ; Proton Pump Inhibitors/therapeutic use
Chemical Substances	Proton Pump Inhibitors
Language	English
Publishing date	2021-01-07
Publishing country	Japan
Document type	Case Reports ; Journal Article
ZDB-ID	2429411-1
ISSN	1865-7265 ; 1865-7257
ISSN (online)	1865-7265
ISSN	1865-7257
DOI	10.1007/s12328-020-01333-y
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Article: A case of idiopathic gastric intramural hematoma diagnosed using contrast-enhanced ultrasonography and followed up with conservative treatment.

Nakamura, Jun / Manabe, Noriaki / Kato, Katsuya / Suehiro, Mitsuhiko / Ayaki, Maki / Fujita, Minoru / Kawamoto, Hirofumi / Haruma, Ken

Radiology case reports

2022 Volume 17, Issue 12, Page(s) 4487–4491

Abstract: We herein report a case of an idiopathic intramural hematoma in the gastric wall that presented with symptoms of anemia. Esophagogastroduodenoscopy revealed a submucosal tumor-like lesion on the anterior gastric wall below the gastric fundus. Noncontrast- ...

Abstract	We herein report a case of an idiopathic intramural hematoma in the gastric wall that presented with symptoms of anemia. Esophagogastroduodenoscopy revealed a submucosal tumor-like lesion on the anterior gastric wall below the gastric fundus. Noncontrast-enhanced ultrasonography showed an anechoic area with indistinct boundaries mainly located within the submucosal layer in the gastric wall, and the lesion showed no contrast enhancement on contrast-enhanced ultrasonography. Based on a comprehensive analysis of the above-mentioned ultrasonographic imaging findings, a final diagnosis of idiopathic intramural gastric hematoma was made. The patient was treated conservatively, and changes in the size and internal ultrasonographic characteristics of the mass were followed up by ultrasonography. Six months later, esophagogastroduodenoscopy confirmed that the mass had disappeared.
Language	English
Publishing date	2022-09-27
Publishing country	Netherlands
Document type	Case Reports
ZDB-ID	2406300-9
ISSN	1930-0433
ISSN	1930-0433
DOI	10.1016/j.radcr.2022.08.105
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Article: Severe grade of melanosis coli is associated with a higher detection rate of colorectal adenoma.

Katsumata, Ryo / Manabe, Noriaki / Monobe, Yasumasa / Tanikawa, Tomohiro / Ayaki, Maki / Suehiro, Mitsuhiko / Fujita, Minoru / Kamada, Tomoari / Haruma, Ken / Kawamoto, Hirofumi

Journal of clinical biochemistry and nutrition

2022 Volume 71, Issue 2, Page(s) 165–171

Abstract: The severity and distribution of melanosis coli differ among individuals, and the related factors remain unknown. Additionally, their clinical implications have not been sufficiently demon-strated. Thus, we aimed to detect clinical factors related to the ...

Abstract	The severity and distribution of melanosis coli differ among individuals, and the related factors remain unknown. Additionally, their clinical implications have not been sufficiently demon-strated. Thus, we aimed to detect clinical factors related to the severity and range of melanosis coli and elucidate the associations between the grade, location, and detection rate of colorectal neoplasms. Colonoscopy cases performed at our institution from January 2011 to February 2021 were included. Melanosis coli was classified into mild and severe grades. Clinical characteristics and neoplasm detection rates were compared between the mild and severe MC groups and between the right-sided and whole-colon melanosis coli groups. Overall, 236 MC (mild,
Language	English
Publishing date	2022-08-10
Publishing country	Japan
Document type	Journal Article
ZDB-ID	632945-7
ISSN	1880-5086 ; 0912-0009
ISSN (online)	1880-5086
ISSN	0912-0009
DOI	10.3164/jcbn.22-19
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Zs.B 2981: Show issues

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Article: Appendiceal mucocele pathologically classified as appendiceal epithelial hyperplasia and preoperatively diagnosed by contrast-enhanced ultrasonography: A case report.

Radiology case reports

2024 Volume 19, Issue 3, Page(s) 1166–1170

Abstract: We report a patient with a mucocele with diffuse wall thickening diagnosed by transabdominal ultrasonography and contrast-enhanced ultrasonography. Transabdominal ultrasonography showed diffuse thickening of the entire appendix wall and an anechoic area ... ...

Abstract	We report a patient with a mucocele with diffuse wall thickening diagnosed by transabdominal ultrasonography and contrast-enhanced ultrasonography. Transabdominal ultrasonography showed diffuse thickening of the entire appendix wall and an anechoic area that appeared to be fluid collected throughout the appendix lumen. However, the "onion skin sign" was not detected. Contrast-enhanced ultrasonography combined with superb microvascular imaging revealed abundant mucosal blood flow and no abnormal vascular network within the mucosa of the appendix wall. We preoperatively diagnosed a mucocele complicated by acute and chronic appendicitis, and ileocecal resection was performed. Macroscopic and microscopic findings of the resected specimens demonstrated that the appendiceal wall was diffusely thickened, with fibrosis and inflammatory cell infiltration, and that the appendiceal root rumen was narrowed with epithelial hyperplasia. No neoplastic changes were observed. The cause of the appendiceal mucocele was likely fibrosis and stenosis at the root of the appendix due to initial acute appendicitis.
Language	English
Publishing date	2024-01-04
Publishing country	Netherlands
Document type	Case Reports
ZDB-ID	2406300-9
ISSN	1930-0433
ISSN	1930-0433
DOI	10.1016/j.radcr.2023.12.033
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