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Biomedical subjects

J D Sullivan

Publications and source records attributed to J D Sullivan.

32 records · Page 2Linked to original sources
PubMed1975

Influence of substrate wettability on the attachment of marine bacteria to various surfaces.

The effect of the initial substrate surface condition, as indicated by the critical surface tension for wetting, on the rate of attachment of marine bacteria to a variety of solid surfaces has been measured. The techniques used to determine the number of bacteria attached per unit surface area were a lipopolysaccharide test utilizing Limulus lysate and direct examination of the surface by scanning electron microscopy. The results obtained by the two techniques are compared and their significance to the control of microbiological slime film formation (microfouling) is discussed.

Journal Article↗
PubMed1974

Factors affecting the sensitivity of Limulus lysate.

Limulus lysate clots when mixed with picogram quantities of endotoxins. The sensitivity of the lysate was improved 100-fold by the removal of an inhibitor and addition of divalent cations. The methods developed in this investigation eliminated much of the seasonable variability of the lysate, improved the heat stability after lyophilization, and made it possible to use the lysate with saline solutions.

Arachnida↗
PubMed1969

Without authority.

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Communication↗
PubMedDate not supplied

Spontaneous rupture of the peroneus longus tendon with fracture of the os peroneum.

Injuries of the peroneus longus and os peroneum are rarely reported. Two cases are presented, each occurring with an inversion stress and resultant audible snap. One patient sustained a complete spontaneous disruption of the peroneus longus with fracture of the os peroneum. This 64-year-old male was treated by excision of the proximal fracture fragment of the os peroneum and primary tendon repair. A 2-week prodrome of pain in the lateral aspect of the foot, preceded the rupture. Case 2, a 39-year-old female, was treated nonoperatively, and represents the clinical dilemma that may occur when the os peroneum is traumatized. It is emphasized that diagnosis of fracture of this ossicle can only be confirmed with operative excision and microscopic study. The authors recommend primary surgical treatment in those cases where continuity of the peroneus longus is disrupted. Where continuity is maintained, surgical exploration should be reserved for those cases that fail to respond to prolonged and intensive rehabilitation. Both patients regained full function and remain symptom free 11 and 10 months after treatment.

Adult↗