Sun Ge

University of Tübingen

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Henrik Stöhr

University of Tübingen

Zhang Cl

Daqing Oilfield General Hospital

Gao ChunYang

Han Dong-mei

Second Affiliated Hospital of Harbin Medical University

Xu Jw

Affiliated Hospital of Guizhou Medical University

Andreas T. Matzke

University of Tübingen

Dou Yl

Peking Union Medical College Hospital

Hans‐U. Pfretzschner

University of Tübingen

Michael W. Maisch

Albstadt-Sigmaringen University

Hsisheng Teng

Changchun Institute of Optics, Fine Mechanics and Physics

Cooperative Institutions

University of Tübingen

Staatliches Museum für Naturkunde Stuttgart

Institut für Geologie und Umwelt (Germany)

TH Bingen University of Applied Sciences

Daqing Oilfield General Hospital

Peking University First Hospital

Peking University

Xuzhou Medical College

Soochow University

Second Affiliated Hospital of Soochow University

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Morphological alterations of rat testes after intraabdominal dissection of spermatic cord vessels

Zhonghua xiaoerwaike zazhi (2004)

Sun Ge

Objective To simulate a laparoscopic F S procedure in young rats and evaluated the morphologic alterations in detail with regard to testicular atrophy.Methods Thirty day old Wistar rats divided into 2 groups underwent laparoscopic sham operation and unilateral laparoscopic F S procedure.Detailed morphological investigations were performed at 7 different postoperative intervals between the 9th day and 18th month.Results Laparoscopic F S procedure induced testicular atrophy in 85% of the operated testes with different degrees of spermatogenic arrest. Mild(blood testis barrier damaged), severe (Sertoli cell only syndrome) and complete (normal testicular structure collapsed) testicular atrophy were used to define atrophy according to the morphologic alterations observed. In mild or severe atrophy, the testicular size of the operated testis was only slightly reduced compared to the age matched controls, whereas the contra lateral testis was not involved. In complete atrophy (49% of the operated testes) a striking size reduction with necrosis of the testicular parenchyma and marked central microlithiasis was observed. The contra lateral testes revealed in all cases mild or severe atrophy beginning as early as the 45th day postoperatively and eventually developed severe atrophy 18 months later. Parallel to the testicular atrophy, Leydig cell (LC) hyperplasia developed in mild or severe atrophic testes and finally reached a typical adenoma size in the operated and the contra lateral atrophic testes. In the complete atrophic testes, LC hyperplasia also developed.Conclusions An animal model for laparoscopic F S procedure could be established in prepubertal Wistar rats. This laparoscopic F S procedure induced a high incidence of testicular atrophy in various severities, which could result in sub or infertility due to impaired spermatogenesis, as well as LC hyperplasia or adenoma formation in the atrophic testes.

Testicular atrophy

Spermatic cord

Testicle

Parenchyma

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A new Xinjiangchelyid turtle (Testudines, Eucryptodira) from the Jurassic Qigu Formation of the southern Junggar Basin, Xinjiang, north‐west China

Palaeontology (2004)

Andreas T. Matzke Michael W. Maisch Sun Ge Hans‐U. Pfretzschner Henrik Stöhr

A new eucryptodiran turtle, Xinjiangchelys qiguensis sp. nov. from the Upper Jurassic (Oxfordian — ?Kimmeridgian) Qigu Formation of the southern Junggar Basin (north‐west China) is described. The type material consists of a partial skeleton, including the complete carapace, plastron, nearly all cervical vertebrae, both scapulae, the pelvis and one ulna. It is clearly identifiable as a basal eucryptodire since it lacks the mesoplastron. It is distinguished from other species of Xinjiangchelys by several autapomorphies of the carapace and plastron, such as the first and fifth vertebrals extending on the peripherals, the plastron with three pairs of gulars, and an intergular which does not contact the hyoplastron. In the postcranium, the scapula with a long acromial and a small scapular process, the pelvis with a short ilial shaft and the elongated cervical vertebrae are characteristic. A new phylogenetic analysis of the in‐group phylogeny of the Xinjiangchelyidae is proposed and discussed, resulting in a new classification of the family. Xinjiangchelys ( Toxocheloides ) narynensis is regarded as a nomen dubium . Shartegemys is referred to Xinjiangchelys , whereas the holotypes of ‘ Plesiochelys ’ chungkingensis and ‘ P ’. latimarginalis are excluded from the genus Xinjiangchelys but included in the Xinjiangchelyidae.

Autapomorphy

Nomen dubium

10.1111/j.0031-0239.2004.00410.x

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Infrared Spectroscopy with Line Array Detection Investigation on Molecular Orientation of Polymer Dispersed Liquid Crystal

CHINESE JOURNAL OF ANALYTICAL CHEMISTRY (CHINESE VERSION) (2010)

Sun Ge Hsisheng Teng Zhang Cl Dou Yl Xu Jw

Absorbance

Crystal (programming language)

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The Screening Assessment of Two Methods for Surveying Tuberculosis Immunity

Zhongguo jihua mianyi (2001)

Sun Ge

To further testify the value of applying purified protein derivative(PPD)of tuberculin for monitoring the immunocompetence,879 children were inoculated with bacille calmette-Gue'rin(BCG)and received both PPD experiment and mark reaction detection 12 weeks later The screening indices were also calculated and assessed The results showed that the sensitivity,specificity and correct indices of mark reaction were low and the rates of misdiagnosis and missed diagnosis were high PPD experiment is proved to be the only ideal method for monitoring tuberculosis immunocompetence up till now

Immunocompetence

Purified protein derivative

Tuberculin test

Treatment

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Spinal fusion of lumbar intertransverse process in a goat by using tissue engineered bone with xenogeneic deproteinized bone as scaffold.

The Orthopedic Journal of China (2009)

Gao ChunYang Sun Ge Han Dong-mei

[Objective]To study the properties of xenogeneic deproteinized bone (DPB) used as scaffold in the bone tissue engineering and its application to the spinal fusion of the lumbar intertransverse process in a goat. [Methods]The deproteinized bone was derived from an adult pig femoral cancellous bone through physical and chemical treatments.The cell-material complex was observed under the inverted phase contrast microscope to evaluate the adhesion and the growth of the osteoblasts. The experimental model of the spinal fusion in the lumbar intertransverse process was produced in 24 male goats aged 6-8 months, which were divided into 3 groups according to different implant graft. All the samples were harvested at 4,8,12 weeks postoperatively, and a series of examinations were performed, including the radiography and the histomorphological assay.[Results]It showed that The DPB maintained natural pore network system, it hardly had any antigen, so it had good histocompatibility. In the spinal fusion model of lumbar intertransverse process,the cell-material complex could form cartilage and had a new bone formation in a multipoint way, the osteogenic process was almost the same as the auto-ilium osteogenesis and had a good mechanical strength.[Conclusion]The xenogeneic deproteinized bone is a good material in the bone tissue engineering, which can be used as an osteogenesis scaffold and provides a stable fusion.

Cancellous bone

Bone tissue

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