四川省鱼类寄生粘孢子虫两新种（粘孢子纲：双壳目）

本四川省鱼类寄生粘孢子虫两新种：寄生墨头鱼的宜宾两极虫,新种Ｍｙｘｉｄｉｕｍ ｙｉｂｉｎｅｎｓｅ ｓｐ．ｎｏｖ．和寄生鳙Ａｒｉｓｔｉｃｈｔｈｙｓ ｎｋｂｉｌｉｓ的鳙单尾虫,新种Ｕｎｉｃａｕｄａ ａｒｉｓｔｉｃｈｔｈｙｄｉｓ ｓｐ．ｎｏｖ。     

The Plasma Membrane of Myxosporidian Valve Cells: Freeze Fracture Data

Freeze fracturing of Myxosporidian spores reveals the occurrence of a continuous layer of transmembrane particles all over the surface area of the valve cells which form the spore envelope. These particles are densely packed all over the P face membrane. Due to their polygonal outline, their diameter (6-7 nm) and their central core, they resemble the particles forming the connections of gap junctions which metabolically couple the neighboring cells in animal tissues. In the present report, the role of the transmembrane particles is still hypothetical. However, they might represent a membrane structural specialization of the spores which are submitted to osmotic variations of the fluid external medium. Furthermore similar transmembrane particles are observed at the level of the septate junction which seals the valve cells. In this occurrence, they are arranged in a series of 40 double rows parallel to the suture of the spore envelope. These findings support the view that Myxosporidia are Metazoa and raise the problem of their origin.     

鱼类寄生粘孢子虫两新种(粘孢子目:粘体科,碘泡科)

本文报道寄生鱼类体表的粘孢子虫两新种：寄生在胡子鲇的珠江粘体虫Ｍｙｘｏｓｏｍａ ｚｈｕｊｉａｎｇｅｎｓｉｓ ｓｐ．ｎｏｖ．和寄生在麦瑞加拉鲮Ｃｉｒｒｈｉｎａ ｍｒｉｇａｌａ的广州碘泡虫Ｍｙｘｏｂｏｌｕｓ ｇｕａｎｇｚｈｏｕｅｎｓｉｓ ｓｐ．ｎｏｖ．。     

Anisakis simplex and Kudoa sp.: evaluation of specific antibodies in appendectomized patients

High prevalence and intensity of infection with anisakid larvae has been reported in commercially important fish in Spain. Likewise, Kudoa-infected fish have lately been detected in both fresh and frozen fish. In the present study the possible relation between appendectomy and specific antibodies to these fish parasites was investigated. One hundred and sixty patients were enrolled in this study. They were divided into two groups of eighty patients each and matched for sex and age: Group 1 (appendectomized) and Group 2 (control group). Total immunoglobulins (Ig’s), IgG, IgM, IgA and IgE against Anisakissimplex or Kudoa sp. antigens were analysed by ELISA. The mean values of the specific antibodies were lower in the appendectomy group, although significant differences were not observed in the case of IgG, IgA and IgE anti-A. simplex and IgE anti-Kudoa sp. In summary, appendectomy significantly decreased serum specific immunoglobulin levels against these food borne parasite antigens. This decrease was detectable from three months to three years post-appendectomy. It is necessary to study the influence of the surgical removal of other important parts of the GALT on these anti-parasite humoral immune responses.     

鲢疯狂病病原体鲢碘泡虫孢子形成各阶段的观察研究

链碘泡虫是鲢疯狂病的病原体。本文报道鲢碘泡虫营养体细胞的核型、各期有丝分裂相、孢子形成过程的早期、即二个生殖细胞的联合以及孢子的产生。     

Differential effect of appendectomy and tonsillectomy on anti-Kudoa sp. antibodies in patients with MALTectomy

We found an association between tonsillectomized patients and subsequent appendicitis. We also observed that MALTectomy significantly decreased secretory IgA levels in serum of patients, being this decrease more pronounced when both operations (tonsillectomy and appendectomy) had been performed. The elevated humoral responses detected previously by us in BALB/c mice immunized with Kudoa sp. pseudocyst extracts and the high IgG1 and IgE levels induced by the oral administration of Kudoa sp. pseudocysts to BALB/c mice showed the possible immunopathological effects in man from the ingestion of Kudoa sp. infected fish. We use the ELISA method to investigate the possible relationship between MALTectomy (tonsillectomy and appendectomy) and specific antibody levels to Kudoa sp. Both anti-Kudoa sp. specific antibody levels and the number of patients that recognized Kudoa sp. antigens were greater in tonsillectomy patients when compared to the control and the other studied groups (appendectomized and appendectomized + tonsillectomies patients). Tonsillectomy was associated to a switch in the class of immunoglobulins involved in these responses and these responses may be abrogated by appendectomy. Tonsils and appendix may respond in different ways to Kudoa sp. antigens and these different reactions may be involved in some immunopathological reactions.     

淡水鱼类寄生粘孢子虫九新种

作者于1983—1984年,调查了湖北省五湖鱼类寄生粘孢子虫区系,所发现的粘孢子虫,经鉴定有9种是新种(其中两极虫Myaldium 2种,粘体虫Myxosoma 1种,碘泡虫Myxobolus 6种)。测量孢子大小,均是经5％福尔马林固定的标本。