Objective Detected Her-2/neu, matrix metalloproteinases-2 (MMP-2) and Leptin in stomach cancer serum and tissue, discussed their roles in occurance and development of gastric cancer. Methods Detected the ex-pression of Her-2/neu, MMP-2 and Leptin in serum by ELISA, and detected the expression of Her-2/neu, MMP-2 and Leptin in stomach cancer tissue by IHC. Results The positive rates of Her-2/neu, MMP-2, Leptin in gas-tric cancer serum were higher than the positive rates in control group ( P<0.05 ) . The positive rates of Her-2/neu, MMP-2, Leptin in gastric cancer tissues were higher than the positive rates in adjacent tissues (P<0.05 ). The positive expressions of two tests had consistency. In tissues, the positive expression rates of Her-2/neu,MMP-2 and Leptin were correlated with the depth of invasion,lymph node metastasis, clinical stage(P<0.05). Their ex-pression was not correlated with sex, age, size, site of tumor and the degree of differentiation. In serum, the posi-tive expression of Her-2/neu was correlated with the depth of invasion, lymph node metastasis, clinical stage( P<0.05 ) . The positive expression of MMP-2 was correlated with lymph node metastasis ( P<0.05 ) . The positive ex-pression of Leptin had no significant correlation with pathological features. Conclusion Her-2/neu,MMP-2 and Leptin promote the occurrence, development and transfer process of gastric cancer. It can be used for clinical diag-nosis, guide the targeted therapy and provide scientific and reasonable reference for gastric cancer prognosis.

The perineurial cells of the small nerve branch of the normal human abdominal wall are observed with electron microscope. The fibrous long-spacing bodies (FLS) are found within the interstitial substance of the endoneurium. 1. 2-5 layers of the perineurial cells surround the nerve fasciculus. The perineurial cells are squamous in shape and the cytoplasm contains microfilaments and pinocytotic vesicles. Each perineurial cell has an obvious basement membrane on its basal surface but the fibroblasts, whatever situated in the endoneurium or on the outer surface of the perineurium, has no basement membrane. Numerous desmosome and some gap junctions between the close attached perineurial cells are demostrated. The collagen fibrils between perineurial cells can be often shown. FLS bodies and collagen fibrils about 45 nm in diameter in the interstitial substance of endoneurium inside perineurial cells are demonstrated. In the connective tissue surrounding the outside of perineurial cells, the collagen fibrils of 80 nm in diameter can be seen, but no FLS bodies present there. 2. FLS bodies in the endoneurial matrix can be demostrated. Most of them closely associated with the basement membrane of the Schwann cells surrounding the unmyelinated nerves but no FLS bodies are found associate with those of the myelinated nerves. A few FLS bodies do not relate to basement membrane and they are invested only with the collagen fibrils. In the longitudinal sections, most of FLS bodies are in spindle shape of various sizes, their longitudinal axes parallel to that of the adjoining collagen fibrils. Sometimes the FLS bodies continue with the collagen fibrils are found. Occasionally, FLS body like a bridge locate between two Schwann cells and its dark bands continue to the basement membrane of the Schwann cells. Two or three FLS bodies may fuse together but their cross bands do not registered at the same level. In the oblique sections, FLS bodies are nearly rectangular in shape, with the cross bands shown, and their appearance do not show greaty difference from those in longitudinal sections. The periodicity of FLS bodies is about 133nm in length; the dark band in it is about 53 nm, which is made of the dense granular substance; the light band is about 80 nm, which is made of a network with approximated parallel microfilaments. There are no further crossstriated structures within the periods. Some problems, such as the role of the perineurial cells, the relationship of FLS bodies with basement membrane, are briefly discussed.

Atrial Flutter ; diagnosis ; etiology ; therapy ; Electrocardiography ; Female ; Humans ; Infant, Newborn ; Infant, Premature ; Treatment Outcome

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Nursing Staff, Hospital ; psychology ; Surveys and Questionnaires

Objective: Develop a kind of portable negative pressure calibrator by the design and implement of method. Methods:By the working principle of negative pressure sensor and gas flow sensor, the negative pressure aspirator realizes the calibration function and stability of the monitoring function of the pressure and flow. Results:Stating from the design concept, this portable negative pressure can satisfy the requirement of the quality control and test work. Conclusion:Guarantee the accuracy and efficiency in the clinical first aid and field battle when using attractor. This avoids attractor of iatrogenic injury accident caused by negative pressure fall off.

TMPRSS3 (transmembrane protease, serine 3) is a member of Ⅱ transmembrane serine proteases (TTSPs), and like the other members of this family, it contains typical domains including a serine protease domain, a transmembrane domain, a LDL receptor-like domain (LDLRA), and a scavenger receptor cysteine-rich domain (SRCR). Four alternative protein isoforms have been described, and isoform A is thought to be primary isoform which is expressed in many tissues, especially in the cochlea. TMPRSS3 protein is primarily localized in the endoplasmic reticulum membranes where it may be anchored by its transmembrane domain. TMPRSS3 is mutated in non-syndromic autosomal recessive deafness (DFNB8/10). Therefore TMPRSS3 is thought to be involved in the development and maintenance of the inner ear, and isoform D may be proposed as a novel diagnostic marker in ovarian carcinoma. TMPRSS3 protein is the first protease which mutation could lead to deafness. These data indicate that important signaling pathways in the inner ear are controlled by proteolytic cleavage. However, it is not clear about TMPRSS3 substrates and its function. The epithelial amiloride-sensitive sodium channel (ENaC) which is regulated by membrane-bound channel activating serine proteases (CAPs), a member of TTSPs, may be a potential substrate of TMPRSS3, but this hypothesis is still to be verified in vivo. With the development of protease research and the application of protease proteomics, substrate degradomes of a protease may therefore represent an important tool for the research of TMPRSS3 function and its molecular mechanism.