We present a case in which a patient with acute hemorrhagic gastritis demonstrated abnormal gastrointestinal accumulation of radiotracer during Tc-99m-methylene diphosphonate (MDP) skeletal scintigraphy. A hemorrhage gastritis was subsequsently demonstrated by endoscopy. The menchanism for the intestinal localization of Tc-99m-MDP in this patient is not clear, but we guess that the extravasated blood containing the radiopharmaceutical cannot recirculate and stays at the bleedings site, so we can see the intestinal activity.
Endoscopy ; Gastritis ; Hemorrhage* ; Humans ; Radionuclide Imaging* ; Technetium Tc 99m Medronate*

No abstract available.
Dipyridamole* ; Heart Ventricles*

No abstract available.
Dandy-Walker Syndrome*

No abstract available.
Drug Therapy* ; Granulocyte Colony-Stimulating Factor* ; Granulocytes* ; Leukemia, Myeloid, Acute*

BACKGROUND: It is well known that topical tacrolimus is safe and effective on the treatment of atopic dermatitis (AD) patients. Tacrolimus is a primarily immunosuppressive agent without antistaphylococcal effect. Thus the colonization of staphylococcus aureus (S. aureus), on the skin of patients treated with this agent, might be increased. OBJECT: The purpose of this study is to know the effect of tacrolimus on S. aureus colonization of patients with AD and to compare the result with clinical severity and skin barrier function. METHOD: We enrolled 65 patients with moderate to severe AD. They were treated with 0.03% tacrolimus ointment twice daily for 4 weeks. Clinical severity was assessed by the eczema area and severity index (EASI). S. aureus colonization was measured by tape method. Skin barrier function was checked by measuring the transepidermal water loss (TEWL). Evaluations were performed at week 0 (baseline), 1st, 2nd and 4th. The results were compared and the statistical analysis was performed. RESULTS: S. aureus colonization was significantly decreased with tacrolimus treatment at week 1st as compared with baseline. But there were no differences among week 1st, 2nd and 4th. EASI and TEWL showed a decreasing tendency in a time dependent fashion. The correlations between each data were variable. CONCLUSION: Topical application of tacrolimus ointment reduce the colonization of S. aureus on the skin of patients with AD. Moreover, the severity of AD and skin barrier function were improved with treatment. However it is not sure the effect of tacrolimus as a long-term maintenance therapy based on this data, because this is a short term study. In future assessment of topical agents and S. aureus colonization, it will be important to make a study by the comparative method and for a long term period.
Colon* ; Dermatitis, Atopic* ; Eczema ; Humans ; Skin ; Staphylococcus aureus ; Tacrolimus*

No abstract available.
Adenosine* ; Dipyridamole* ; Dobutamine* ; Exercise Test*

No abstract available.
Cisapride* ; Gastric Emptying* ; Humans

PURPOSE: To determine whether Tc-99mMIBI is recognized by the multidrug resistant P-glycoprotein (Pgp), we have measured quantitatively Tc-99mMIBI uptake in cancer cells. The effects of various Pgp reversing agents on cellular Tc-99m-MIBI uptake were also investigated in the presence of multidrug resistance gene-1 (mdr1 gene) overexpression. MATERIALS AND METHODS: We measured percentage uptake of Tc-99m-MIBI at different incubation temperatures both in mdr1 positive and negative cells. The effects of verapamil, cyclosporin, and dipyridamole on cellular uptake of Tc-99m-MIBI were also evaluated with or without overexpression of mdr1 gene in cultured murine leukemia L1210 cells. RESULTS: The mdr1 gene expressing cell lines were effectively induced in in vitro with continuous application of low-dose adriamycin or vincristine. Cellular uptake of Tc-99m-MIBI was higher in mdr1 negative L1210 cells than those of mdr1 positive cells, and higher when incubated in 37 degree C than 4 degree C. In the presence of verapamil, cyclosporin or dipyridamole, Tc-99m-MIBI uptake was increased upto 604% in mdr1 positive cells. CONCLUSION: Cellular uptake of Tc-99m-MIBI is lower in leukemia cells over-expressing mdr1 gene, and MDR-reversing agents increase cellular uptake. These results suggest that Tc-99m-MIBI can be used for characterizing Pgp expression and developing MDR-reversing agents In vitro.
Animals ; Cell Line ; Cyclosporine ; Dipyridamole ; Doxorubicin ; Drug Resistance, Multiple* ; Leukemia L1210 ; Leukemia* ; P-Glycoprotein ; Technetium Tc 99m Sestamibi* ; Verapamil ; Vincristine

PURPOSE: Ga-67 scintigraphy has been used for the evaluation of tumors, especially lymphoma. Recently, Tl-201 and Tc-99m MIBI were also used to tumor imaging. Tl-201 and Tc-99m MIBI had better physiologic characteristics than Ga-67, so we studied 32 biopsy proven lymphoma patients (male 24, female 8, mean age 46 years) with Ga-67, Tl-201 or Tc-99m MIBI and compared the scan findings. MATERIALS AND METHODS: Twenty-three of 32 patients were injected 74-111 MBq (2-3 mCi) of Tl-201, before chemotherapy and imaged with dual-headed SPECT (Prism 2000, Picker, USA) at 30 minutes after injection. Delayed images were obtained after 3 hr in 8 patients. Twenty seven of 32 patients were injected 740 MBq (20 mCi) of Tc-99m MIBI and imaged at 30 minutes after injection. 111-185 MBq (3-5 mCi) of Ga-67 was injected in 12 patients and imaged at 48 and 72 hours after injection. Twenty eight patients were diagnosed as non-Hodgkin's lymphoma and others were Hodgkin's lymphoma. RESULTS: Twenty patients were positive on Tl-201 scan and 3 patients showed negative findings. One of these 3 patients, Tc-99m MIBI and Ga-67 scan were positive. Twenty two patients were positive on Tc-99m MIBI scan and 5 patients showed negative findings. One of these 5 patients, Tl-201 was positive and 2 were positive on Ga-67 scan. Ten of 12 patients showed positive findings on Ga-67 scan. The sensitivity of these agents were 83.3%, 87.0% and 81.5% for Ga-67, Tl-201 and Tc-99m MIBI, respectively. The sensitivity was highest in Tl-201 scan, but there were no significant differences among three tests. In this study, there was no significant difference of uptake ratios between early and delayed images of Tl-201. CONCLUSION: Scintigraphy with Tl-201 and Tc-99m MIBI in lymphoma patients have similar sensitivity with Ga-67.
Biopsy ; Drug Therapy ; Female ; Hodgkin Disease ; Humans ; Lymphoma* ; Lymphoma, Non-Hodgkin ; Radionuclide Imaging ; Tomography, Emission-Computed, Single-Photon

No abstract available.
Animals ; Diuresis* ; HSP70 Heat-Shock Proteins* ; Rats* ; Urinary Bladder*