人体自然感染藐小棘隙吸虫首次发现

本文报道首次在安徽和县发现人体自然感染藐小棘隙吸虫。60条成虫测量结果显示,成虫呈长叶形,大小为1519.4—2056.3×466.4—564.0μm。头领发达,具头棘24枚,背部中央间断。体棘自头领开始,分布至后睾丸后缘。口吸盘大小为107.9—148.6×102.5—148.6μm。腹吸盘大小为205.0—240.9×205.0—235.8μm。消化道有口、前咽、咽、食道和肠管。睾丸两个,前后相接排列于虫体后1/3部处。阴茎囊位于肠叉后方与腹吸盘之间。卵巢较圆,卵黄腺发达。子宫短,通常只含1个虫卵。虫卵长椭圆形,大小为95.1—116.2×54.3—72.8μm。 采用2.5—40mg/kg剂量的吡喹酮顿服治疗39例患者,均驱得成虫,表明吡喹酮是治疗藐小棘隙吸虫的有效药物。

THE FIRST RECORD OF HUMAN NATURAL INFECTION OF ECHINOCHASMUS LILIPUTANUS

Human natural infection with Echinochasmus liliputanus was found for the first time from the inhabitants of Hexian county of Anhui Province in Spring, 1991. Sixty worms collected from 3 infected persons were studied morphologically. The adult worms are leaf-shaped, 1519.4-2056.3 x 466.4-564.0 microns in size. The width of the collar is 235.8-297.3 microns. A row of 24 collar spines with size of 22.5-35.6 x 8.8-10.6 microns is arranged on the collar symmetrically with dorsal and ventral interruption. The oral sucker is terminal, 107.6-148.6 x 102.5-148.6 microns. The length of the prepharynx is 25.6-66.7 microns, the pharynx, 97.3-127.8 microns and the oesophagus 117.9-205.0 microns. The caeca 764.3-1,248.8 x 21.0-39.0 microns extends to the distal end of the body. The acetabulum is anterior to the middle level of the body, 205.0-240.9 x 205.0-235.8 microns in size. Two testes, situated in the posterior one third of the body, is slightly oval, in tandem; the anterior one is 133.3-199.9 x 199.9-256.4 microns in size, and the posterior one, 178.9-251.3 x 164.0-246.0 microns. The Cirrus pouch is kidney-shaped, 211.5-248.5 x 112.8-194.8 microns in size, located between the bifurcation of the intestine and the acetabulum, containing the seminal vesicle and cirrus. The ovary is oval in shape, 71.8-92.3 x 76.8-97.4 microns in size, situated in the middle of the body. The vitellaria are distributed on each side from the acetabulum to subterminal, consisting of many follicles. The uterus is short, convoluted between the anterior testis and the acetabulum, containing 0-6 eggs.(ABSTRACT TRUNCATED AT 250 WORDS)