目的探讨手法复位对位置性下跳眼震(positional down beat nystagmus,pDBN)伴眩晕患者的临床疗效。方法选取2019年1月至2023年12月北京中医药大学东直门医院通州院区pDBN伴眩晕患者33例,分析手法复位对pDBN伴眩晕患者的临床疗效。结果3...目的探讨手法复位对位置性下跳眼震(positional down beat nystagmus,pDBN)伴眩晕患者的临床疗效。方法选取2019年1月至2023年12月北京中医药大学东直门医院通州院区pDBN伴眩晕患者33例,分析手法复位对pDBN伴眩晕患者的临床疗效。结果33例患者中,男13例、女20例,年龄22~79岁,平均(55.8±15.5)岁。18例患者手法复位治疗有效,Yacovino法的有效率为33.3%(11/33),Yacovino联合半Semont法的有效率为21.2%(7/33)。其中4例在治疗过程中转化为典型后半规管良性阵发性位置性眩晕(benign paroxysmal positional vertigo,BPPV)。前半规管BPPV与对侧背地型后半规管BPPV的位置性眼震特点相似。结论Yacovino联合半Semont复位法可提高pDBN伴眩晕患者的诊断与复位治疗成功率。展开更多
In this study,the morphology and ultrastructure of the compound eye of L.lewisii were investigated using scanning electron microscopy(SEM),transmission electron microscopy(TEM),microcomputed tomography(μCT),and 3D re...In this study,the morphology and ultrastructure of the compound eye of L.lewisii were investigated using scanning electron microscopy(SEM),transmission electron microscopy(TEM),microcomputed tomography(μCT),and 3D reconstruction.The compound eye of L.lewisii was of the apposition type,with an average of 121.88±7.64 ommatidia in males and 119.00±4.71 ommatidia in females.Each ommatidium was composed of a biconvex cornea,an acone consisting of four cone cells,eight retinular cells along with the rhabdom,two primary pigment cells,and numerous secondary pigment cells.The open type of rhabdom in L.lewisii consists of six peripheral rhabdomeres contributed by the six peripheral retinular cells(R1~R6)and two vertically attached central rhabdomeres contributed by R7 and R8 respectively.The orientation of microvilli suggested a weak sensitivity to polarized light perception.展开更多
Two newly recorded species in the genus Mesaphorura Bomer, 1901 from China are described： Mesaphorura hylophila Rusek, 1982 and Mesaphorura pacifica Rusek, 1976. The important morphological characters of these Chines...Two newly recorded species in the genus Mesaphorura Bomer, 1901 from China are described： Mesaphorura hylophila Rusek, 1982 and Mesaphorura pacifica Rusek, 1976. The important morphological characters of these Chinese specimens are described in details. A key to Chinese Mesaphorura species is provided.展开更多
Two new species of Tullbergiidae, Paratullbergia qilianensis sp. nov. from Gansu and Pongeiella yinchuanensis sp. nov. from Ningxia, northwest China are described. Paratullbergia qilianensis is characterized by the pr...Two new species of Tullbergiidae, Paratullbergia qilianensis sp. nov. from Gansu and Pongeiella yinchuanensis sp. nov. from Ningxia, northwest China are described. Paratullbergia qilianensis is characterized by the presence of one pair of pseudocelli on thoracic segment Ⅰ, with two pairs of pseudocelli on each of thoracic segments Ⅱand Ⅲ, seta px present on abdominal segment Ⅳ, setae a2 and p4 on abdominal segment V as macrosetae, and a less differentiated sensillum p3 on abdominal segment Ⅴ.Pongeiella yinchuanensis is characterized by the pseudocelli of type Ⅲ, the presence of seta p3 on Th.Ⅱ and Ⅲ, five thickened sensilla on Ant.Ⅳ with four of them having distinct basal heels and seta oc2 on head as macroseta.展开更多
Friesea incognita sp. nov. is described from China. This new species is characterized by the combination of: 2 + 2 eyes, no capitate tenent hairs on tibiotarsi, three anal spines, furcula without mucro and dens with 3...Friesea incognita sp. nov. is described from China. This new species is characterized by the combination of: 2 + 2 eyes, no capitate tenent hairs on tibiotarsi, three anal spines, furcula without mucro and dens with 3 setae. Total dorsal and ventral chaetotaxy of the new species is given. A revised key for identification of the species of this genus with 2 + 2 eyes is given. Forty-seven characters of antennal sensilla, eyes and body chaetotaxy are chosen for the cladistic analysis performed for 18 species of this genus, including 12 with 2+2 eyes. Results indicate the new species F. incognita seems to be related to F. nauimetztli from Mexico. The phylogenetic relationships of the species are not well resolved due to the presence of many homoplasies among different species that adapt to a similar soil habitat.展开更多
文摘In this study,the morphology and ultrastructure of the compound eye of L.lewisii were investigated using scanning electron microscopy(SEM),transmission electron microscopy(TEM),microcomputed tomography(μCT),and 3D reconstruction.The compound eye of L.lewisii was of the apposition type,with an average of 121.88±7.64 ommatidia in males and 119.00±4.71 ommatidia in females.Each ommatidium was composed of a biconvex cornea,an acone consisting of four cone cells,eight retinular cells along with the rhabdom,two primary pigment cells,and numerous secondary pigment cells.The open type of rhabdom in L.lewisii consists of six peripheral rhabdomeres contributed by the six peripheral retinular cells(R1~R6)and two vertically attached central rhabdomeres contributed by R7 and R8 respectively.The orientation of microvilli suggested a weak sensitivity to polarized light perception.
基金sponsored by the Natural Science Foundation of Shanghai(17ZR1418700)the Forest Pest Investigation Project of Hebei Province
文摘Two newly recorded species in the genus Mesaphorura Bomer, 1901 from China are described： Mesaphorura hylophila Rusek, 1982 and Mesaphorura pacifica Rusek, 1976. The important morphological characters of these Chinese specimens are described in details. A key to Chinese Mesaphorura species is provided.
基金supported by the National Natural ScienceFoundation of China(31772509)the Natural Science Foundation of Shanghai(17ZR1418700)
文摘Two new species of Tullbergiidae, Paratullbergia qilianensis sp. nov. from Gansu and Pongeiella yinchuanensis sp. nov. from Ningxia, northwest China are described. Paratullbergia qilianensis is characterized by the presence of one pair of pseudocelli on thoracic segment Ⅰ, with two pairs of pseudocelli on each of thoracic segments Ⅱand Ⅲ, seta px present on abdominal segment Ⅳ, setae a2 and p4 on abdominal segment V as macrosetae, and a less differentiated sensillum p3 on abdominal segment Ⅴ.Pongeiella yinchuanensis is characterized by the pseudocelli of type Ⅲ, the presence of seta p3 on Th.Ⅱ and Ⅲ, five thickened sensilla on Ant.Ⅳ with four of them having distinct basal heels and seta oc2 on head as macroseta.
基金supported by the National Natural Science Foundation of China (31772509)the Natural Science Foundation of Shanghai (17ZR1418700)partly supported by the Forest Pest Investigation Project of Hebei Province hosted by Professor Guodong REN
文摘Friesea incognita sp. nov. is described from China. This new species is characterized by the combination of: 2 + 2 eyes, no capitate tenent hairs on tibiotarsi, three anal spines, furcula without mucro and dens with 3 setae. Total dorsal and ventral chaetotaxy of the new species is given. A revised key for identification of the species of this genus with 2 + 2 eyes is given. Forty-seven characters of antennal sensilla, eyes and body chaetotaxy are chosen for the cladistic analysis performed for 18 species of this genus, including 12 with 2+2 eyes. Results indicate the new species F. incognita seems to be related to F. nauimetztli from Mexico. The phylogenetic relationships of the species are not well resolved due to the presence of many homoplasies among different species that adapt to a similar soil habitat.
