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Biomedical subjects

J Kelley

Publications and source records attributed to J Kelley.

At least 127 records · Page 7Linked to original sources
PubMed1976

Role of distal delivery of filtrate in impaired renal dilution of the hypothyroid rat.

Free water clearance (CH2O) was measured during hypotonic saline infusion in Sprague-Dawley and in Brattleboro (DI) rats with 131I-induced hypothyroidism and their age-matched controls. At peak urine flow, which was similar in hypothyroid DI (HDI) and control DI (CDI) rats, inulin clearance (CIn/kg) and CH2O/kg were 23 and 20% (P less than 0.02) lower in HDI. Fractional urine flow and fractional sodium excretion were 30 and 40% (P less than 0.001) higher in HDI. Utilization of distal delivery of filtrate for CH2O, formation was 16% less in HDI (P less than 0.01). Papillary osmolality was not higher in HDI rats. Data in Sprague-Dawley rats were similar to those of the DI rats, indicating that endogenous ADH was effectively suppressed. It is concluded: 1) delivery of filtrate out of the proximal tubule was not diminished in hypothyroid rats in spite of a decrease in CIn; 2) despite a similar delivery of filtrate to the distal diluting site, CH2O formation was less in hypothyroid rats than in controls; 3) these data suggest that a defect in the diluting segment could be unmasked at high rates of filtrate delivered to the distal nephron; 4) this defect could be either due to impaired sodium chloride reabsorption or due to increased backdiffusion of water in the distal nephron.

Animals↗
PubMed1975

Modulation of HL-A antigens by anti-HLA antiserum: effects on the cytotoxicity assay and mixed leukocyte reaction.

Modulation of human leukocyte antigen (HLA) was attempted by treating leukocytes with specific anti-HLA antiserum or by their passage through columns coated with anti-HLA or a double layer of HLA-anti-HLA. The modulated cells were resistant to the cytotoxic effects of the anti-HLA, and they were poor stimulators and good responders to allogeneic cells in the unidirectional mixed leukocyte reaction. Modulated cells regained their HLA 16 hr after modulation if kept in cell suspension alone. The proliferative responses of modulated cells to mitogens were as good as non-modulated cells, indicating that modulation was probably not caused by depletion of lymphoid cells. Supernatants of modulated cells that were incubated overnight or preformed HLA-anti-HLA complexes were capable of suppressing and enhancing the MLR of specific cells depending on the dose used. The similarities of modulation of HLA to other lymphocyte receptors and the limitation of application of the modulation phenomenon to transplantation of allogeneic cells are discussed.

Antibody Specificity↗
PubMedDate not supplied

Villoglandular adenocarcinoma of the cervix recurrent in an episiotomy scar: a case report in a 32-year-old female.

Cervical cancer during pregnancy is rare, occurring in approximately 3% of cervical cancer cases. Considerable controversy exists as to the long-term prognosis of patients diagnosed during pregnancy. A 32-year-old female presented with vaginal spotting in April 1998. A prenatal smear in December 1996 revealed atypical glandular cells of undetermined significance. A sterile speculum exam in April 1997 at 31-week gestational age revealed a polyp on the anterior lip of the cervix, pathology consistent with a well-differentiated villoglandular adenocarcinoma. In August 1997, the patient underwent a radical hysterectomy with pelvic/para-aortic lymphadenectomy. In April 2001, she represented with nodular perineal mass in the episiotomy incision. She received preoperative radiotherapy with a near-complete response and remained without disease for >10 months. It appears that a less radical procedure can offer significant therapeutic value. Preoperative radiotherapy proved effective at achieving a near-complete response. The patient underwent a wide local excision of the perineal area with resultant negative margins.

Adenocarcinoma↗
PubMedDate not supplied

A trifocal model of nursing diagnosis: wellness reinforced.

As nurses have identified the phenomena of concern to nursing and developed diagnostic language, there has been a persistent omission of diagnostic labels that reflect health and a wellness orientation. The fact that the term "diagnosis" has been identified with problems and deficits has impeded work on wellness diagnoses. Further, lack of consensus regarding a definition of health further complicates work in this area. The authors propose a model that incorporates a category of "opportunity to enhance," in addition to the categories of "problem" and "high risk" to derive a trifocal model of nursing diagnoses. Examples from nursing practice are given.

Health↗
PubMedDate not supplied

Complex cytokine modulation of a continuous line of mink lung epithelial cells (Mv1Lu).

The continuous mink lung epithelial cell line Mv1Lu has proven to be a sensitive reporter line in the bioassay for purified TGF-beta, exhibiting a sigmoid-shaped concentration-response relationship with an EC50 of 12 pM (0.3 ng/mL). Maximal inhibition of Mv1Lu cells generates a 75-95% decrement in the number of adherent cells. However, this bioassay is not specific for TGF-beta as originally claimed. Mv1Lu cells are sensitive to other cytokines and substances found in complex biological fluids. In this study the effects of other biological response modifiers in this assay were tested and several were found to have important growth modulatory capacities that confound the quantitation of TGF-beta. EGF, TGF-alpha, fibronectin, and IGF-I all induce Mv1Lu cell proliferation. In contrast, neither PDGF (-AA, -AB, -BB) nor endotoxin (< or = 10 micrograms/mL) affect Mv1Lu cell number. TGF-beta and TNF-alpha at high concentrations (> or = 10 ng/mL) are the only cytokines examined that inhibit Mv1Lu proliferation. TGF-beta decreases final cell number both by preventing mitosis and by inhibition of adherence of cells to the uncoated dish. Several strategies are suggested to assure the specificity of this otherwise convenient bioassay for TGF-beta.

Animals↗