Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-2307
    Keywords: Acromegaly ; Osteoporosis ; Collagen type II ; Lysyl hydroxylation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Although it is now 60 years after Erdheim's (1931) detailed description of vertebral alterations in severe acromegaly, it is still unclear whether osteoporosis is a consistent feature of acromegalic bone disease or not. We studied the vertebral trabecular bone of a 44-year-old woman who had suffered active acromegaly for more than 20 years, and compared it with 17 normal as well as 2 osteoporotic controls. Histomorphometry revealed a very low trabecular bone volume and thus documented the presence of osteoporosis. The mean trabecular plate thickness was strikingly increased in acromegaly (possibly caused in part by a low-dose fluoride treatment), whereas it was normal or reduced in the osteoporotic controls. The meticulous analysis showed islands of cartilaginous tissue in the core of the acromegalic trabeculae which were not present in any other sample. In these areas collagen II was detected by immunohistochemistry. Biochemical analysis revealed that collagen II accounted for 7% of the total collagenous matrix. The degree of hydroxylation of lysyl residues of collagen I was close to the average value of all control samples studied. Our data show that osteoporosis can occur in acromegaly and that it is characterized by unusual architectural and compositional features. These findings challenge the prevailing view that the matrix of osteoporotic bone always shows a normal composition.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-1238
    Keywords: Sepsis ; Hemolysis ; Clostridium perfringens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 61-year-old man developed a pyrescia accompanied by a massive intravascular hemolysis after abdominal surgery (Whipple's operation) of a pancreatic adenocarcinoma. Abdominal ultrasound and the abdominal CT-scan showed marked aerobilia and multiple liver abscesses. Laboratory tests demonstrated the presence of the Thomsen-Friedenreich cryptantigen (TCA) on the membranes of the patient's erythrocytes. The enzymatic cleavage of N-acetyl-neuraminic acid usually covering the TCA may lead to a life threatening intravascular hemolysis. Since Clostridial bacteriae typically synthesize neuraminidase, the presumptive diagnosis of Clostridial sepsis complicated by massive hemolysis was made. Immediate antibiotic therapy including penicillin G and metronidazole stopped hemolysis within a few hours and the patient servived. On the following day, microbiological examination identifiedClostridium perfringens in the patient's blood cultures. Clostrial sepsis should be suspected in patients with underlying infections and/or malignant diseases, particularly of the gastrointestinal or genitourinary tract, who present with septic shock and acute intravascular hemolysis. Whereas microbiological specification of the organism is time consuming, the relatively simple agglutination test with anti-TCA peanut lectin can provide a rapid presumptive diagnosis. The immediate onset of an appropriate antimicrobial therapy is of central importance and might be life-saving.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...