Aged ; Aged, 80 and over ; Cross-Sectional Studies ; Databases, Factual ; Female ; Humans ; Male ; Middle Aged ; Palliative Care ; Renal Replacement Therapy ; Retrospective Studies ; Singapore ; Treatment Refusal ; psychology

Gastric tuberculosis is a rare disease. It usually occurs secondarily to another lesions and mainly in the lungs. Only a few cases of primary gastric tuberculosis have been reported in the literature. Most commonly, gastric tuberculosis lesion locates in the lesser curvature side of the antrum. Therefore the clinical picture is similar to the peptic ulcer. A 24-year-old women visited to the Inha university hospital complaining of vomiting and epigastric discomfort. Gastrofiberscopy showed multiple polypoid mass around the pylorus with stenotic pyloric channel. Subtotal gastrectomy was performed and histologic examination revealed chronic granulomatous inflammation with caseation necrosis. That is compatible with tuberculosis. The patient was taken antituberculosis medication without complication. So we report the case of pyloric obstruction due to gastric tuberculosis with review of the literature.
Female ; Gastrectomy ; Humans ; Inflammation ; Lung ; Necrosis ; Peptic Ulcer ; Pyloric Stenosis ; Pylorus ; Rare Diseases ; Tuberculosis* ; Vomiting ; Young Adult

The bleomycin is a chemotherapeutic agent useful in the treatment of selected neoplasms, including non-seminomatous testicular carcinoma. An increased incidence of respiratory failure postoperatively in patients previously treated with bleomycin has been reported. And an increase in the toxicity of high concentration of oxygen in oxygen therapy has been demonstrated in rodents after administration of bleomycin. However, the use of an enriched inspired oxygen concentration 41% was reported not hazardous in a testicular cancer population who were exposed to significant doses of bleomycin. The pulmonary toxicity of bleomycin therapy in combination with high oxygen exposure is still controversial. The aim of this study is to analyze the effect of exposure to 50% oxygen in the mice pretreated with bleomycin. Bleomycin were administered intraperitoneally to the mice, 4 mg/ kg twice a week for 5 weeks. After administeration of bleomycin to the mice, the half of the miee, the experimental group, were exposed to 50% oxygen for 24 hours. And the other control group were exposed to room air. Morphometric analysis with light microscopy was performed to the following parameters; number of total pulmonary cell count, percentage of consolidation of lung parenchyma and degree of intensity of fibrosis of lung parenchyma. The area of diseased lung was increased in mice given with bleomycin and hyperoxia compared with that of those treated with bleomycin only. The results were as follows, l) In the control group given 4 mg/kg bleomycin and room air, the number of total pulmo- nary cell count were 36.21+/-6.53/10(-8) m(2) and the percentage of consolidation was 1.2+/-0.4%. 2) In the experimental group given with 4 mg/kg bleomycin and 50% oxygen for 24 hrs, the number of total pulmonary cell count were 59.67+/-9.13/10(-8) m(2) and the percentage of area of consolidation of lung parenchyma was 5.8+/-2.3%, 3) Fibrosis of the lung parenchyma was seen only in the experimental group to which oxygen was given after administration of bleomycin. In conclusion, this study demonstrated that hyperoxia potentiated the pulmonary damage by bleomycin in the mice.
Animals ; Bleomycin* ; Cell Count ; Fibrosis ; Humans ; Hyperoxia* ; Incidence ; Lung ; Mice ; Microscopy ; Oxygen ; Respiratory Insufficiency ; Rodentia ; Testicular Neoplasms

We performed a molecular genetic study on the sequences of 18S ribosomal RNA (ITS1 region) gene in 4-day-old adult worms of Macroorchis spinulosus recovered in mice experimentally infected with metacercariae from crayfish in Jeollanam-do Province, Korea. The metacercariae were round, 180 µm in average diameter, encysted with 2 layers of thick walls, but the stylet on the oral sucker was not clearly seen. The adult flukes were oval shape, and 760-820 µm long and 320-450 µm wide, with anterolateral location of 2 large testes. The phylogenetic tree based on ITS1 sequences of 6 M. spinulosus samples showed their distinguished position from other trematode species in GenBank. The most closely resembled group was Paragonimus spp. which also take crayfish or crabs as the second intermediate host. The present study is the first molecular characterization of M. spinulosus and provided a basis for further phylogenetic studies to compare with other trematode fauna in Korea.
Animals ; DNA, Ribosomal Spacer/*genetics ; Metacercariae/classification/cytology/genetics/isolation & purification ; Mice ; Phylogeny ; RNA, Ribosomal, 18S/genetics ; Trematoda/*classification/cytology/*genetics/isolation & purification

Maritrema spp. (Digenea: Microphallidae) are parasites of birds, but have not been found in the Republic of Korea. In this study, metacercariae of Maritrema sp. were discovered in the Asian shore crab, Hemigrapsus sanguineus, caught in the mud-flats of Jebu-do, Hwasung-gun, Gyeonggi-do, and the adult flukes were confirmed by experimental infection into mice. Based on the symmetric ribbon-like vitellarium, adult flukes of Maritrema sp. were identified, but did not belong to previously described species in terms of the following morphologic characteristics: ceca reaching to the lateral wall at the anterior border of the ovary; ventral sucker larger than oral sucker; a prominent metraterm; and vitellarium forming a complete ring. Hence, we named this microphallid M. jebuensis n. sp. after the island where the second intermediate hosts were collected. From this study, it has been shown that Maritrema sp. is distributed in Korea and transmitted by the Asian shore crab, H. sanguineus.
Animals ; Brachyura/*parasitology ; Disease Models, Animal ; Metacercariae/anatomy & histology/isolation & purification ; Mice ; Mice, Inbred ICR ; Republic of Korea ; Trematoda/anatomy & histology/*classification/*isolation & purification ; Trematode Infections/parasitology/pathology

Echinostome eggs were detected in 22 (1.1%) of 2,074 people residing in riparian villages along the Mekong River in Khammouane Province, Lao PDR. In order to recover the adult flukes, 9 persons were treated with praziquantel and purged with magnesium salts. A total of 55 echinostome specimens (4 species) were recovered from the 9 persons. Echinostoma revolutum (8 specimens) was recovered from 3 persons, Artyfechinostomum malayanum (8 specimens) was from 2 persons, Echinochasmus japonicus (33 specimens) was from 7 persons, and Euparyphium sp. (6 specimens) was from 1 person. In Lao PDR, only human infections with E. japonicus were previously known. Therefore, the present study describes human infections with E. revolutum, A. malayanum, and Euparyphium sp. for the first time in Lao PDR. These results indicate that the surveyed villages of Khammouane Province, Lao PDR are low-grade endemic foci of echinostomiasis.
Adult ; Animals ; Anthelmintics/administration & dosage ; Echinostomatidae/*classification/*isolation & purification ; Female ; Humans ; Laos ; Magnesium/administration & dosage ; Male ; Praziquantel/administration & dosage ; Trematode Infections/*parasitology

Freshwater fish from Vientiane Municipality and Savannakhet Province, Lao PDR were examined by the muscle compression and artificial digestion methods to know the infection status with trematode metacercariae. In the fish from Savannakhet, 2 species of metacercariae, Opisthorchis viverrini and Haplorchis taichui, were detected. O. viverrini metacercariae were found in 6 species of fish, Puntius brevis, Hampala dispar, Esomus metallicus, Mystacoleucus marginatus, Puntioplites falcifer, and Cyclocheilichthys armatus. H. taichui metacercariae were detected in 3 species of fish, P. brevis, P. falcifer, and M. marginatus. In the fish from Vientiane, 4 species of metacercariae, O. viverrini, H. taichui, Haplorchis yokogawai, and Centrocestus formosanus, were detected. Among them, O. viverrini metacercariae were found in 7 species of fish, Onychostoma elongatum, C. armatus, H. dispar, P. brevis, Cyclocheilichthys repasson, Osteochilus hasseltii, and Hypsibarbus lagleri. The metacercariae of H. taichui were detected in 6 species of fish, C. repasson, O. elongatum, C. armatus, H. dispar, Labiobarbus leptocheila, and Cirrhinus molitorella. The metacercariae of H. yokogawai were found in 9 species of fish, C. repasson, O. elongatum, C. armatus, H. dispar, Labiobarbus leptocheila, O. hasseltii. C. molitorella, Hypsibarbus wetmorei, and H. lagleri. The metacercariae of C. formosanus were detected in 4 species of fish, C. repasson, P. brevis, O. hasseltii, and C. molitorella. From these results, it is confirmed that fishborne trematode metacercariae, i.e. O. viverrini, H. taichui, H. yokogawai and C. formosanus, are prevalent in various species of freshwater fish from Savannakhet Province and Vientiane Municipality, Lao PDR.
Animals ; Fish Diseases/epidemiology/*parasitology ; Fishes ; Fresh Water ; Laos/epidemiology ; Trematoda/anatomy & histology/classification ; Trematode Infections/epidemiology/parasitology/*veterinary

Fishborne trematode (FBT) metacercariae were investigated in fish from 3 Provinces of Lao PDR. Total 242 freshwater fish of 40 species were collected in local markets of Luang Prabang (59 fish of 16 species), Khammouane (81 fish of 19 species), and Saravane (97 fish of 14 species), and each of them was examined by artificial digestion method. Four species of metacercariae (Opisthorchis viverrini, Haplorchis taichui, Haplorchis yokogawai, and Centrocestus formosanus) were detected. O. viverrini was detected in 35 fish (14.5%), and their density was 252 per infected fish (Luang Prabang, 88 metacercariae in 5 fish; Khammouane, 187 in 6 fish; Saravane, 303 in 24 fish). H. taichui was found in 102 fish (42.1%), and their density was 485 per infected fish (Luang Prabang, 260 metacercariae in 38 fish; Khammouane, 1,084 in 23 fish; Saravane, 359 in 41 fish). H. yokogawai was detected in 92 fish (38.0%), and their density was 222 per infected fish (Luang Prabang, 362 metacercariae in 17 fish; Khammouane, 126 in 20 fish; Saravane, 214 in 55 fish). Metacercariae of C. formosanus were found in 8 fish (3.3%), and their density was 3 per infected fish. In the present study, it has been confirmed that FBT metacercariae, in particular, H. taichui, H. yokogawai, and O. viverrini, are highly prevalent in fish from Luang Prabang, Khammouane, and Saravane Province, Lao PDR.
Animals ; Fish Diseases/*parasitology ; Laos/epidemiology ; Metacercariae/classification/isolation & purification ; Parasite Load ; Prevalence ; Trematoda/*classification/*isolation & purification ; Trematode Infections/parasitology/*veterinary

A male patient with neurocysticercosis was identified in Montai Village, Xay District, Oudomxay Province, Lao PDR in February 2004. He had a history of diagnosis for neurocysticercosis by a CT scan in Thailand after an onset of epileptic seizure in 1993. A pig in the same district was found to contain Taenia solium metacestodes (=cysticerci); the slaughtered pig body contained more than 2,000 cysticerci. In addition to morphological identification, molecular identification was also performed on the cysticerci by DNA sequencing analysis of the mitochondrial cox1 gene; they were confirmed as T. solium metacestodes. The patient is regarded as an indigenous case of neurocysticercosis infected in an endemic focus of T. solium taeniasis/cysticercosis in Oudomxay Province, Lao PDR.
Animals ; Cysticercus ; Electron Transport Complex IV/genetics ; Humans ; Laos/epidemiology ; Male ; Mitochondria/genetics ; Neurocysticercosis/*epidemiology/parasitology/radiography ; Risk Factors ; Sequence Analysis, DNA ; Swine ; Swine Diseases/*epidemiology/parasitology/radiography ; Taenia solium/classification/genetics/*isolation & purification

The metacercariae of Artyfechinostomum malayanum (Leiper, 1911) Mendheim, 1943 were discovered in Pila sp. snails purchased from a market in Phnom Penh, Cambodia. They were isolated from the snails using the artificial digestion technique and were orally fed to 2 hamsters, 1 rat, and 2 mice to obtain the adult flukes. The metacercariae were round, 145–165 μm in diameter, having a cyst wall of 6–10 μm in thickness, a head collar and collar spines, and characteristic features of excretory granules. Adult flukes were recovered in the small intestines of the animals at days 14 and 32 post infection and were morphologically observed using a light microscope and a scanning electron microscope. They were plump or elongated, ventrally curved, 6.0–8.1×1.6–2.0 mm in size, and characterized by the head collar bearing 43 collar spines, including 5 end group ones on each side, a long cirrus sac extending beyond the posterior margin of the ventral sucker, a submedian ovary, and 2 deeply lobed testes. Eggs in uteri were operculate, ovoid to ellipsoid, and 120–135×68–75 μm in size. In scanning electron microscopy, the head collar was prominent with collar spines looking like horns. Scale-like tegumental spines were densely distributed on the ventral surface between the head collar and ventral sucker. Sensory papillae were distributed mainly on the tegument around suckers. By this study, it has been first confirmed that the life cycle of A. malayanum exists in Cambodia.
Adult ; Animals ; Cambodia* ; Cricetinae ; Digestion ; Eggs ; Female ; Head ; Horns ; Humans ; Intestine, Small ; Life Cycle Stages ; Metacercariae* ; Mice ; Microscopy, Electron, Scanning ; Ovary ; Ovum ; Rats ; Snails* ; Spine ; Testis ; Trematoda ; Uterus