What's the difference between mesothelium and peritoneum?

Mesothelium


Definition:

  • (n.) Epithelial mesoderm; a layer of cuboidal epithelium cells, formed from a portion of the mesoderm during the differetiation of the germ layers. It constitutes the boundary of the c/lum.

Example Sentences:

  • (1) Recognition of this deficiency in our knowledge spurred a belated explosion of research that began with an exploration of the fine structure of the mesothelium.
  • (2) A case of mucous metaplasia of mesothelium in an 80 year old woman is described.
  • (3) The other main sites of expression are the genital ridge, fetal gonad and mesothelium.
  • (4) We have previously shown that progesterone receptor (PR) is expressed in the mesothelium of the chick oviduct and ovary and in the smooth muscle cells of the oviduct and the bursa of Fabricius.
  • (5) We now describe, for the first time, that cells morphologically similar to uterine decidual cells found beneath the peritoneal mesothelium in inguinal hernia and in the cervical mucosa during normal pregnancy and in the mesenchymal tissue of the Fallopian tubes and ovaries at term react with the monoclonal antibody for IGFBP-1 equally to endometrial decidual cells.
  • (6) Adenomatoid change or squamous metaplasia of the mesothelium occurs in one-third of cases.
  • (7) Animals had poor early weight gain, and gross necropsy examination revealed intestinal adhesions and a mesothelium that was sclerotically thickened.
  • (8) They arise from the tissues of the broad ligament, predominantly from mesothelium covering the peritoneum but also from paramesonephric and mesonephric remnants.
  • (9) The mesothelium is a target of the toxic and carcinogenic effects of asbestos fibers.
  • (10) The first mesothelial mitoses appeared: in the first series (I) of experiments - in 24 h, in the second series (II) of experiments - 21 h. Further, proliferation of the mesothelium appeared in different parts of the tissue with various intencity and was of wavy character.
  • (11) Peritoneal mesothelium was exposed for 2-60 min to solutions of horseradish peroxidase by incubation in vitro, or after intraperitoneal injection in vivo.
  • (12) Rat pleural mesothelium was studied 16 to 22 months after intrapleural inoculation of chrysotile-asbestos.
  • (13) In the present study, immunohistochemical analysis of normal rabbit, dog, and monkey tissues using monoclonal antibody OC125, revealed that in these animals positive staining for CA125 is found in all tissues that produce this mucin-like glycoprotein in man, i.e., the peritoneal and pleural mesothelium, the different Müllerian-duct-derived epithelia of the female genital tract, and the epithelium of trachea, bronchi, bronchioli, and mucoserous respiratory glands; CA125 was also detected in some ductal and acinar cells of the dog mammary gland.
  • (14) The study of the morphologic features of mesothelial cells in effusions in experimental asbestos-induced mesotheliomas may contribute to the understanding of the neoplastic transformation of the mesothelium.
  • (15) 3) Between 9 and 12 days of age U-shaped folds of the bursal mesothelium began to invade the connective tissue of the bursa.
  • (16) In the absence of a primary tumor elsewhere, we considered this tumor to be primary in the spleen, and it was presumed that the tumor arose either from invaginated capsular mesothelium of the spleen or from heterotopic pancreatic or enteric tissue within the spleen.
  • (17) Keratin 7 was found to occur in the columnar and glandular epithelium of the lung, cervix, breast, in bile ducts, collecting ducts in the kidney and in mesothelium, but to be absent from gastrointestinal epithelium, hepatocytes, proximal and distal tubules of the kidney and myoepithelium.
  • (18) When studying total pleural mesothelium films in rats after intrapleural injection of chrysotile the pathological regeneration of the mesothelium is observed.
  • (19) The fetal tracheal and bronchial epithelium, tracheal glands, and pleural mesothelium were positive for CA 125.
  • (20) These results indicate that B. fragilis adheres to rat peritoneal mesothelium better than unencapsulated species and suggests that the capsular polysaccharide of B. fragilis plays some role in this increased adherence.

Peritoneum


Definition:

  • (n.) The smooth serous membrane which lines the cavity of the abdomen, or the whole body cavity when there is no diaphragm, and, turning back, surrounds the viscera, forming a closed, or nearly closed, sac.

Example Sentences:

  • (1) This implies that these proteins are quantitatively absorbed from the peritoneum without undergoing modifications.
  • (2) Immunohistochemical insulin proofs were positive in the peritoneum over a period of 3 months and in the liver up to one year after implantation.
  • (3) The distribution of cells at the stage of DNA synthesis and mitosis in all the parietal peritoneum speaks of the absence of special proliferation zones.
  • (4) Various parts of the peritoneum were equipotential with venous blood.
  • (5) In 25 rabbits, endometrium from the right uterine horn was transplanted onto the peritoneum (Experimental group = Group E).
  • (6) First, CAPD exposes essentially continuously the peritoneum to peritoneal dialysis solutions.
  • (7) Bacterial infections of the peritoneum may be primary (pneumococcal peritonitis of childhood).
  • (8) On day 5 of enalapril treatment, an osmotic minipump was implanted in the peritoneum that caused sustained release of ANG II (200 ng.kg-1.min-1) or vehicle (bovine serum albumin) for 3 or 7 days.
  • (9) This report is the first published demonstration of the existence of fenestrated capillaries in human parietal and rabbit diaphragmatic peritoneum.
  • (10) Also numerous small knots on the small intestine, peritoneum, and omentum, as well as a considerable amount of ascites were observed.
  • (11) In the authors' four cases the problems were solved anatomically and functionally by suturing only the mesenterium of the terminal ileum to the edge of the previously cut peritoneum.
  • (12) Polypropylene mesh is then passed down the laparoscope, placed into the defect to obliterate the space, and the edges of the peritoneum are then reapproximated.
  • (13) The injection in the peritoneum of Limulus amebocyte lysate at the same time of inoculation of lethal dose of E. coli LPS is able to protect the rats against endotoxin lethality.
  • (14) A hernial sac originating from the peritoneum near the oesophagogastric junction contained the midgut which had herniated through the oesophageal hiatus.
  • (15) Although no changes could be detected in the conventional B lymphocyte population, the peritoneum was replete with B cells characteristic of the Ly-1 lineage.
  • (16) They are then filled with 5.104 macrophages obtained from the peritoneum of normal mice suspended in 100 mul of medium 199 supplemented with bovine serum albumin.
  • (17) Endolymphatic administration of kanamycin provided an increase in its activity in the inflamed tissues of the peritoneum and omentum and markedly prolonged its halflife as compared to those after the routine intramuscular administration of the drug.
  • (18) A new culdocentesis system is presented, based on vacuum fixation of the posterior vaginal wall together with Douglas peritoneum in a small vacuum cup, enabling a controllable central perpendicular puncture with a special catheter-needle unit.
  • (19) The sites of ENM included lung and thoracic lymph nodes (2), pleura and peritoneum (2), and liver (1).
  • (20) The reservoir is placed outside the peritoneum, in a pre-peritoneal position, in order to allow its fixation by adhesions to the abdominal wall.

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