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Biomedical subjects

C Soulier

Publications and source records attributed to C Soulier.

10 recordsLinked to original sources
PubMed1999

The secretory patterns of growth hormone in pregnant and hysterectomized ewes.

This work was undertaken to determine the secretory patterns of GH during pregnancy, and to evaluate the effect, if any, of hysterectomy during early pregnancy on subsequent secretion of GH in ewes. The concentrations of GH were determined in the plasma of jugular blood samples collected at 15-min intervals during a 6-h period on days 20, 40, 60, 80, 100 and 120 post-mating, and three times per week between days 29 and 120 post-mating from 5 pregnant ewes and from 5 ewes from which the gravid uterus was removed on day 30 post-mating. A pulse analysis program (Pulsar) was used to analyse the secretory patterns of GH in individual profiles of the serial sampling period. In the two groups of ewes, peripheral concentrations of GH fluctuated in an episodic manner during the frequent blood sampling of any stage of the post-mating period examined. The overall GH concentrations, the basal GH concentrations, the frequency and the amplitude of GH pulses remained fairly stable between days 20 and 120 post-mating in the two groups of ewes. The parameters of GH secretion were not different between the two groups of ewes. The secretory patterns of GH, as determined in plasma of blood collected three times per week between days 29 and 120 post-mating were also not different between the two groups of ewes. In conclusion, results of this study show that (i) the pulsatile secretion of GH does not change as pregnancy advances, and (ii) hysterectomy performed during early pregnancy does not subsequently affect the secretory patterns of GH. These findings suggest that the gravid uterus and/or the feto-placental unit secretory products are unlikely to be involved in the control of GH secretion during pregnancy in the ewe.

Animals↗
PubMed1998

Bilateral radical neck dissection with unilateral internal jugular vein reconstruction.

OBJECTIVE: To describe and evaluate the functional and oncologic results of one internal jugular vein replacement after bilateral radical neck dissection (RND). STUDY DESIGN: A retrospective historical cohort study. METHODS: Since 1972 all patients (n = 9) undergoing bilateral RND with resection of both internal jugular veins had a reconstruction of one internal jugular vein. In six cases the RNDs were staged, and in three cases the RNDs were performed simultaneously. In every case a vascular reconstruction was performed with an autologous vein graft. All patients received radiation therapy, in five patients before and in four patients after the vein grafting. Functional results were evaluated in terms of postoperative head and neck and neurologic complications. In some patients a Doppler scan was performed to assess vein patency. Oncologic results are reported as relapse-free survival and mortality intervals. RESULTS: In all patients the postoperative course was uneventful, without neurologic complications. Facial edema was noted in four patients, mild in three and moderate in one. Two patients are alive, with follow-ups of 8 and 18 years. Seven patients are dead, two without evidence of recurrence, four with cervical recurrence after a mean survival of 10 months, and one after distant metastasis after a survival of 7 years. In patients with long-term survival a Doppler scan confirmed the patency of the vein graft. CONCLUSION: The lack of operative complications and the absence of postoperative neurologic complications make a unilateral internal jugular vein replacement after bilateral RND attractive, although the oncologic results remain poor.

Adult↗
PubMed1996

Four new cases of collagenous colitis with joint symptoms.

Collagenous colitis is characterized by chronic watery diarrhea and a greater than 10 micron-thick collagen deposit in the subepithelial layer of the colonic mucosa. Rheumatic and autoimmune diseases have been reported to occur in patients with collagenous colitis. In 1993, we managed four patients with collagenous colitis and joint diseases. One had rheumatoid arthritis, one had a spondylarthropathy and two had seronegative polyarthritis without joint destruction. Three patients had dryness of the eyes and/or mouth and two had Raynaud's phenomenon. These four cases and data from a literature review provide a basis for discussing possible links between collagenous colitis and a number of joint diseases. Although some anecdotal case-reports may reflect a chance association with inflammatory joint diseases, available evidence suggests that collagenous colitis may be a cause of enteropathic arthropathy. Recent data point to an abnormality in the differentiation of fibroblasts in the colonic mucosa, although the mechanism that initiates this abnormality remains unknown.

Adult↗
PubMed1996

Is collagenous colitis a new etiology of sicca syndrome?

We conducted a prospective cross-sectional study of seven patients with collagenous colitis to determine the clinical, immunologic and histologic features of sicca syndrome associated with this condition. Four patients reported dryness of the mouth and/or eyes. No laboratory evidence of autoimmune disease was found, except in one patient with ankylosing spondylitis. Collagenous infiltration of the salivary glands was quantified in each patient as the percentage of the total gland surface examined. Histologic studies of salivary glands demonstrated significantly more collagen in the group of patients with collagenous colitis than in the group of age-matched controls (30.52% versus 11.8%, p < 0.05). No inflammatory infiltrates were seen. Our data suggest that a common mechanism may underlie the various lesions found in patients with collagenous colitis. However, the mechanism that initiates the fibrotic process in the colon and salivary glands remains unknown.

Adult↗
PubMed1992

Follow up study of labial salivary gland lesions in primary Sjögren's syndrome.

Labial salivary gland biopsy samples were taken from 27 patients with primary Sjögren's syndrome (SS), 10 with rheumatoid arthritis (RA) and secondary SS, and four normal control subjects on two occasions at intervals of more than one year. In the former group of patients, eight of the nine initially negative analyses were positive on the second sample, whereas two of the seven patients with RA and secondary SS were negative for the first sample and then positive for the second. In primary SS, the mean (SD) variation of the focus score was 1.7 (2.6) and that of salivary duct infiltration 0.2 (0.7). The former correlated well with the latter.

Aged↗
PubMed1992

[Post-traumatic osteoid osteoma. Apropos of 2 cases and review of the literature].

Two cases of osteoid osteoma which became clinically apparent after a prolonged silent period are reported. One was located in the tibia in a 30-year-old female and the other in the femur in a 26-year-old male. Both developed after a surgical procedure, at the site of the operation; one was located on the track of an internal fixation screw. Diagnosis was delayed despite the suggestive timing of the pain; isotopic scanning, CT scan and angiography provided suggestive data and diagnosis was confirmed by histologic studies. A review of the literature found 13 other cases meeting the following criteria: initial trauma, silent period, suggestive pain, discovery of an osteoid osteoma at the site of the trauma, and recovery following surgical treatment. The role of the trauma is discussed.

Adult↗
PubMedDate not supplied

Carotid artery reconstruction following resection during radical neck dissection.

From 1972 to 1991, 7 patients with advanced cancer of the head and neck and nodal metastasis with capsular rupture underwent radical neck dissection and sacrifice of the carotid artery. Vascular reconstruction was performed with either an autologous venous (8 cases) or arterial (1 case) graft. In all patients, the postoperative course was uneventful without neurologic complications. One patient is alive 4 years after the procedure. Six patients expired after a mean survival of 20 months. The indications for vascular reconstruction are discussed.

Adult↗
PubMedDate not supplied

[Beta-blockers and plasma lipids].

Beta-blockers are frequently used in the treatment of hypertension. However their long term use has been associated with an increase of serum triglycerides and a decrease of HLD-cholesterol concentrations which could diminish the benefit drawn from their hypotensive effect. The effect on lipid metabolism is less unfavourable when beta-blockers exert an intrinsic sympathomimetic activity or are said to be cardioselective. Mechanisms involved are complex and poorly understood.

Adrenergic beta-Antagonists↗