• Title/Summary/Keyword: Gastrin

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Bombesin-based Radiopharmaceuticals for Imaging and Therapy of Cancers Expressing Gastrin-releasing Peptide Receptor

  • Hwi-Soo Lim;Choong Mo Kang
    • Journal of Radiopharmaceuticals and Molecular Probes
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    • v.8 no.2
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    • pp.129-137
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    • 2022
  • Bombesin has a high binding affinity to gastrin-releasing peptide receptor (GRPR) and can be used as a targeting ligand in GRPR-related cancers. Because GRPR is overexpressed in prostate cancer, bombesin analogues have been investigated extensively for diagnosis and treatment of prostate cancer. In nuclear medicine, bombesin derivatives labeled with radiometals such as 55/57Co, 64Cu, 68Ga, 99mTc, and 177Lu or radiohalogen such as 131I and 211At were developed as markers for early detection of tumors and theragnostic tool for cancer treatment. This review focuses on the introduction of bombesin-based radiopharmaceuticals that are studied in pre-clinical or clinical research.

Gastrin-releasing peptide promotes the migration of vascular smooth muscle cells through upregulation of matrix metalloproteinase-2 and -9

  • Park, Hyun-Joo;Kim, Mi-Kyoung;Kim, Yeon;Bae, Sun Sik;Kim, Hyung Joon;Bae, Soo-Kyung;Bae, Moon-Kyoung
    • BMB Reports
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    • v.50 no.12
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    • pp.628-633
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    • 2017
  • Gastrin-releasing peptide (GRP) has been reported to be implicated in the pathogenesis of inflammatory disorders. The migration and proliferation of vascular smooth muscle cells (VSMCs) are key components of vascular inflammation that leads to the development of atherosclerosis. The present study aimed to investigate the molecular effect of GRP on VSMC proliferation and migration. We report that GRP significantly enhanced the proliferation and migration of rat VSMCs. GRP increased mRNA and protein expression of matrix metalloproteinase-2 and -9 (MMP-2/9) in VSMCs. The induction of MMP-2/9 by GRP was regulated by the activation of the signal transducer and activator of transcription-3 (STAT3). In addition, STAT3-knockdown of VSMCs by siRNA or blockade of the GRP receptor inhibited GRP-induced migration of VSMCs. Taken together, our findings indicate that GRP promotes the migration of VSMCs through upregulation of MMP-2/9 via STAT3 activation.

Effect of Various Moxibustions on Xiawan(CV10) on Gastric Function in Normal Rat (하완을 이용한 다양한 구(灸)자극 방법이 정상 백서의 위기능에 미치는 영향)

  • Han Kyung-Hee;Park Yong-In;Choi Wong-Jin;Park Won;Yu Yun-Cho;Kim Myung-Dong
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.5
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    • pp.1344-1348
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    • 2005
  • Moxibustion treatment gives stimulus to specific points in the meridian distributed on the body, and controls imbalance of Qi, blood stream, and, Yin and Yang. So this treatment is the way that prevents and cures diseases by making meridian flow normal. Moxibustion stimulating conditions have a great influence on the treatment results. So proper standards of stimulus are needed to expect effective treatment results. To know what number of moxibustions are needed to gain good treatment effects, I observed the gastrin level in blood after moxibustion on the Xiawan(CV10). Gastrin stimulates to secrete gastric acid. The followings are the results. After 1, 5, and 10 moxibustions everyday on each rat for 5 days, 1 compared what number of moxibustion had a good effect. The group of 5 moxibustions every day had a more significant effect. After moxibustions of 1, 5, and 10 coagulated moxas on each rat, 1 compared the effect of the size of coagulated moxa. The group of 5 and 10 coagulated moxas had a more significant effect. After the same moxibustions on each ract for 1, 5, and 10 days, 1 compared the effect of moxibustion terms. The group of 5 days moxibustion had a more significant effect. These results say that the treatment effect of moxibustion can be varied by the choice of points, and the size, the time, and the number of moxibustions can bring out different effects. I think that the proper size, the proper time, and the proper number of moxibustions can be more effective than the excessive moxibustions.

Effect of Combined Acupuncture at Hefu(LI4), Taichong(LR3) and Moxibustion at Shangwan(CV13), Zhongwan(CV12), Xiawan(CV10) on the Serum Gastrin Level in Rats (상완, 중완, 하완 구요법과 사관 침요법의 혼합사용이 정상 백서 위 기능에 미치는 영향)

  • Han Sang-Muk;Hwang Tae-Jun;Kim Hong-Jae;Jung Sang-Gu;Jo Seung-Mook;Yu Yun-Cho;Kim Meyong-Dong
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.5
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    • pp.1238-1242
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    • 2005
  • Shangwan(CV13), Zhongwan(CV12), Xiawan(CV10), Hefu(L14) and Taichong(LR3) which belong to Conception Vessel and stomach meridian are acupuncture points frequently used for healing gastrointestinal desease in oriental medicine. The present study was conducted to see the effects produced by combined acupuncture(A), electro-acupuncture(EA) and moxibustion using five acupoints which belongs to different meridians on serum gastrin level in rats. Electro-acupuncture (2 Hz, intensity; 10 times muscle twitch threshold) was applied for 30 minutes to Hefu(LI4), Taichong(LR3) under halothane anesthesia. Moxibustion ($1.6{\pm}0.3\;mg$, 5 times of a day) was applied during 3 days to CV10, CV12, CV13 under halothane anesthesia. Combined stimuli of acupuncture at Hefu(LI4), Taichong(LR3) and moxibustion at CV13, CV12 increased serum gastrin level significantly eventough combined simulus of moxibustion on CV 10 was not shown any change. And combined stimul of EA and moxibustion at experimental all groups were not shown any effects. These data suggest that effects of acupuncture and moxibustion are depentent with used acupoints and combination stimuli method.

The effect of Sagunjatanghapchangchuljiyutang on chronic diarrhea in rats (사군자탕합창출지유탕(四君子湯合蒼朮地楡湯)이 흰쥐의 만성설사(慢性泄瀉)에 미치는 영향)

  • Kim, Joo-Seong;Lim, Seong-Woo
    • The Journal of Dong Guk Oriental Medicine
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    • v.8 no.1
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    • pp.145-158
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    • 1999
  • Objective : To observe Sagunjatanghapchangchuljiyutang in rectifying the digestive dysfunctional spleen deficiency syndrome caused by chronic diarrhea. Methods : Sagunjatanghapchangchuljiyutang was chosen to treat the digestive dysfunctional spleen deficiency syndrome caused by chronic diarrhea. The model was induced by Rhei Radix and castor oil. The effects on the gastric secretion ability(gastrin, secretin, volume of gastric juice, free acidity, total acidity, pepsin activity) and nutritional condition(protein, albumin, total cholesterol, triglyceride, total lipid, BUN, creatinine, RBC, WBC, hemoglobin, hematocrit) were observed in vivo. Results : The group induced chronic diarrhea by Rhei Radix and castor oil had lower gastric secretion ability and nutritional condition was lower than that of the normal group. The figures for group given Sagunjatanghapchangchuljiyutang showed improvement, especially gastrin, total lipid and hematocrit. Conclusion : Sagunjatanghapchangchuljiyutang have an effect on the digestive dysfunctional spleen deficiency syndrome caused by chronic diarrhea. And experimental study syndrome could be proceed.

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