Medical arthropod survey was conducted in April and July 2004 at five sites on Ho Chi Minh Road, included Lam Thuy commune of Le Thuy district, Xuan Trach commune of Quang Trach district, Huong Hoa commune of Tuyen Hoa district of Quang Binh province; Huong Trach commune of Huong Khe district, Son Truong commune of Huong Son district of Ha Tinh province. A total of 7094 samples of medical arthropods belonging to 124 species, 38 genus, 11 families (Pulicidae, Ixodidae, Trombiculidae, Macrochlidae, Macronyssidae, Laelaptidae, Parasitidae, Culicidae, Muscdae, Calliphoridae, Sarcophagidae), 3 orders (Diptera, Siphonaptera & Acarina), 2 classes (Insecta & Arachnida) have been collected. These 124 arthropod species consist of three species of flea (Siphonaptera), 3 species of tick (Ixodidae), 16 species of chiggers (Trombiculidae), 11 species of mites (Gamasoidea), 33 species of fly (Brachycera), 16 species of Anophelinae and 42 species of mosquito Culicinae. At almost all sites the arthropod species having the role in disease transmission such as Xenopsylla cheopis, Leptotrombidium (L.) deliense, Orthonyssus bacoti, Aedes aegypti, Culex tritaeniorhyncus, C. quinquefasciatus, Anopheles minimus and Musca domestica have been presented.
Arthropods ; Epidemiology

An investigation on medical arthropoda was conducted from 3-30/8/2002 at 4 study sites: A Roang, Hong Van, Ta Rut and Hung Phung in Ho Chi Minh road (Quang Tri and Thua Thien – Hue segments). 3 species of flea (Siphonaptera), 3 species of ticks (Ixodidae), 6 species of mite (Trombiculidae) and 19 species of tiggs (Gamasoidea), 38 species of Culicinae and 19 species of Anopheles were collected. These belong to 8 families, 2 classes: Acarina and Insecta. Medical arthropoda with epidemiological function such as flea: Xenopsylla cheopis, tick: Leptotrombidium (L) deliense, Garhliepia (W) chinensis, mite Orthonyssus bacoti, mosquito Aedes albopictus, Culex tritaeniohyncus
Epidemiology ; Arthropods ; Invertebrates

In May,Nov. and Dec. 2003, in some sites along HoChiMinh Road through QuangNam province including PhuocDuc commune of PhuocSon district;ThanhMy town of NamGiang district; Bhale commune of DongGiang district and through KonTum province, including DakMan commune, DakPek commune of DakGlei district, DakDuc commune of NgocHoi district...,an inquiry was carried out to determine the faune of arthropodes. 3297 samples of arthropode were collected.3 species of plea, 4 species of tick, 5 species of chigg and 46 species of Culicinae and 14 species of anophelinae mosquitoes were determined. They were distributed in 8 families, 2 classes -spider and insect. In almost sites, there are various arthropode species as pathological factors
parasitology ; Arthropods ; epidemiology

Three compounds, including scolosprine C(1), uracil(2) and hypoxanthine(3), were isolated and purified from the ethyl acetate fraction of centipede by silica gel normal-phase column chromatography, reversed-phase medium pressure preparation chromatography, and high-pressure semi-preparative HPLC. The structure was elucidated through a combination of spectroscopic analyses [such as nuclear magnetic resonance(NMR) and mass spectrometry(MS)] and literature review. Among them, compound 1 was a new quinoline alkaloid. In previous reports, we have described the isolation and structure elucidation of one new and two known quinoline alkaloids. In this paper, we would report the isolation and structure elucidation of scolosprine C in detail.
Alkaloids ; Animals ; Arthropods ; Chilopoda ; Quinolines

Animals ; Arthropods ; Child ; Humans ; Male ; Parasitic Diseases ; diagnosis ; parasitology ; pathology

BACKGROUND: The relative lack of knowledge and interest in arthropod bites has made it difficult to investigate centipede envenomation in Korea. OBJECTIVE: To describe the epidemiology and clinical characteristics of centipede bites in Korea. METHODS: A prospective study of clinical manifestations in patients with centipede bites was performed during the period of May 2004 to April 2005. Factors investigated included sex, age, location and time of assaults, affected parts of the body, signs and symptoms, treatment modalities, and complications. All centipedes that were involved were brought to the clinic, examined, and species-identified. RESULTS: A total of 29 cases of centipede bite were identified. Scolopendra subspinipes was the causative centipede in all cases. Centipede bites occurred exclusively in summer (June, July, and August). Most of the bites which occurred during the daytime happened outdoors, whereas most nocturnal assaults happened indoors. All patients were bitten on an exposed area and the fingers (37.9%) were the most frequent sites of involvement. Local reactions developed at the bitten sites and usually remained localized. Erythema (100%) and local swelling (79.3%) were the most prominent features. The majority of patients did not show severe systemic symptoms. Most lesions healed completely within a week, without complications. CONCLUSION: Centipede bites are a common occurrance in rural and island areas during the summer season. Dermatologists need to be aware of the clinical manifestations in order to make an appropriate diagnosis and proper treatment decision.
Arthropods ; Bites and Stings ; Diagnosis ; Epidemiology ; Erythema ; Fingers ; Humans ; Korea ; Prospective Studies ; Seasons

A significant-source of allergens come from house dust that contain particles derived from arthropods, molds, and pet dander. This study evaluated mite and booklouse fauna from vacuumed dust samples in Beijing China (a temperate zone). Our survey was carried out in Beijing in the homes of mite allergic patients who visited our Allergy Department. In total, 38 homes were selected for the collection of dust samples by vacuuming, from December 2008 to January 2010. The flotation method was used to isolate mites from house dust. Permanent slides were prepared for mite specimens and mites were identified and counted under a microscope. In total, 1,798 separate mite and insect specimens were found in 345 dust samples taken from 38 homes. A total of 95 individual Dermatophagoides (D) siboney were detected in 35 dust samples from 19 homes (representing 5.3% of all mite and insect species found in house dust); in addition, this mite was found to co-exist with D. farinae (Hughes, 1961) in 33 dust samples. Our results demonstrated the presence D. siboney that co-existed with D. farinae in house dust in Beijing China (a temperate zone).
Allergens ; Arthropods ; China ; Dander ; Dermatophagoides farinae ; Dust* ; Fungi ; Humans ; Hypersensitivity ; Insects ; Mites* ; Pyroglyphidae ; Vacuum*

Arthropods are important in human health, which can transmit pathogens to humans, parasitize, or produce important allergens. Allergy prevalence becomes higher in Korea recently as well as other developed countries in contrast to a decrease of infectious diseases. Allergic diseases caused by household arthropods have increased dramatically during the last few decades since human beings spend more their time for indoor activities in modernized life style. Household arthropods are one of the most common causes of allergic diseases. Biological characterization of household arthropods and researches on their allergens will provide better understanding of the pathogenesis of allergic diseases and suggest new therapeutic ways. Therefore, studies on arthropods of allergenic importance can be considered one of the major research areas in medical arthropodology and parasitology. Here, the biology of several household arthropods, including house dust mites and cockroaches, the 2 most well known arthropods living indoor together with humans worldwide, and characteristics of their allergens, especially the research activities on these allergens performed in Korea, are summarized.
Allergens/*immunology ; Animals ; Arthropods/*immunology ; Household Articles ; *Housing ; Humans ; Hypersensitivity/immunology/*parasitology ; Republic of Korea

Rat mite dermatitis caused by Ornithonysus bacoti, commonly referred to as the tropical rat mite, is characterized by pruritic papules in patients exposed to tropical rat mite. Histopathologic sections from the lesions of infected patients show moderate perivascular lymphohistiocytic infiltration intermingled with some eosinophils. Causative female mites, Ornithonyssus bacoti, can be collected from around the skin lesions. The conclusive diagnosis of tropical rat mite dermatitis is based on the identification of the arthropod O. bacoti at the home of the patient (husbandry of gerbils, etc.). Moreover, the diagnosis of rat mite dermatitis requires the detection of the parasite, which is more likely to be found in the host's environment rather than on the host's skin. We report a case of rat mite dermatitis in a 22-year-old female who presented with pruritic, multiple, erythematous papules on the abdomen, back and axilla.
Abdomen ; Animals ; Arthropods ; Axilla ; Dermatitis* ; Diagnosis ; Eosinophils ; Female ; Gerbillinae ; Humans ; Mites* ; Parasites ; Rats* ; Skin ; Young Adult

Tick is one of the most important arthropods in the transmission of vector-borne diseases. In this study, we investigated the abundance and species of ticks associated with swine and their habitats to assess the risk of spread of tick-borne diseases in host species, such as wild boars. Ticks were collected from 24 grazing or traditionally reared domestic pig farms and 8 habitats of wild boars in 8 provinces and 1 city in the Republic of Korea, by using the dragging and flagging methods. Ticks were also collected directly from 49 wild boars by using fine forceps. A total of 9,846 hard ticks were collected, including 4,977 Haemaphysalis longicornis, 4,313 Haemaphysalis flava, 508 Ixodes nipponensis, 1 Ixodes turdus, and 47 Amblyomma testudinarium. A total of 240 hard ticks were collected from 49 wild boars, including 109 H. flava, 84 H. longicornis, and 47 A. testudinarium. A total of 578 hard ticks were collected from areas around domestic pig farms. Only 2 hard tick species, 546 H. longicornis and 32 H. flava, were collected from these areas. A total of 9,028 hard ticks were collected from wild boars of 8 habitats, including 4,347 H. longicornis, 4,172 H. flava, 508 I. nipponensis, and 1 I. turdus. A. testudinarium was collected only from wild boars, and I. nipponensis and I. turdus were collected only from the habitats of wild boars.
Agriculture ; Arthropods ; Ecosystem* ; Ixodes ; Ixodidae ; Republic of Korea* ; Surgical Instruments ; Sus scrofa* ; Swine ; Tick-Borne Diseases ; Ticks*