Neurosurgical manpower: the physician's viewpoint.

This paper reports a national study of physicians in 24 medical and surgical specialties, and reveals the opinions of neurosurgeons and their professional colleagues with regard to the adequacy of the supply of neurosurgical manpower. Among neurosurgeons, 30.4% believe the supply to be excessive, 60.

Primary hyperparathyroidism in children.

Primary hyperparathyroidism is rare in children. This report describes a 15-year-old boy who had an intrathymic chief cell adenoma. The literature related to this condition in neonates and children is reviewed.

Hereditary pancreatitis: report of an affected Canadian kindred and review of the disease.

Hereditary pancreatitis is an autosomal dominant disease with no other known cause. It usually begins in childhood and is characterized by recurrent attacks of abdominal pain of variable intensity and duration, followed by symptom-free periods. The diagnosis is usually made in early adult life, when pancreatic insufficiency and calcifications appear.

Comparative studies on Salmonella johannesburg bacteriophages: morphology, virulence and interactions with the host cell lipopolysaccharide.

Two long-tailed and two short-tailed bacteriophages are spontaneously released from the Salmonella johannesburg 7.58(R+) strain, and could be propagated on the susceptible strain 5.58(R-).

Preparation of monospecific anti-Salmonella lipopolysaccharide antibodies by affinity chromatography.

The use of immunoadsorbent obtained by coupling aminohexyl-sepharose 4B with Salmonella lipopolysaccharide (LPS) by means of benzoquinone enabled us to obtain anti-O monospecific immune sera which can be used for a quick serological identification of some species of Salmonella in the course of a diagnosis. In this paper we describe a method for binding the LPS extracted from S. typhi-murium with aminohexyl-sepharose 4B, insoluble matrix as well as the preparation of monospecific anti-O5 antibodies from plurispecific anti-S.

Retained and recurrent bile duct stones. Surgical or nonsurgical removal?

An experience with 69 patients who underwent 72 common bile duct reoperations for retained or recurrent choledocholithiasis is presented. The mean age of the patients was 57 years, and 35 patients had associated conditions. In this series six patients (8.

Neurosurgery in the United States: a log-diary study.

The Division of Research in Medical Education and of the University of Southern California, with the cooperation and assistance of the American Association of Neurological Surgeons and the Congress of Neurological Surgeons, has conducted a national study of the professional activities of neurological surgeons in the United States. One of a series of 24 surveys of medical and surgical specialties, the survey obtained information on patient workloads, the allocation of physician time, the characteristics of patients and the circumstances under which they were seen, patient diagnoses, and the care that was provided--including whether an operation was performed. This paper provides a selection of the findings deemed most relevant to manpower issues in neurosurgery.

[Psychological strength and tension according to Pierre Janet].

Janet's psychological studies are focused on behavior. In this objectival perspective, action appears to be underlain by two parameters, i.e.

Mitogenic response of C3H/HeJ mouse lymphocytes to polyanionic polysaccharides obtained from Bordetella pertussis endotoxin and from other bacterial species.

Lipopolysaccharide extracted from Bordetella pertussis was mitogenic for spleen cells of endotoxin-resistant C3H/HeJ mice. Although endotoxic lipid A was inactive, mitogenic activity of lipopolysaccharide was exhibited by purified preparations of polysaccharides I and II, which constitute the carbohydrate moiety of the macromolecule. These low-molecular-weight (2,800 and 3,600) polysaccharides, containing carboxyl groups, were not mitogenic for thymocytes and splenic T-cells of C3H/HeJ mice, but did show mitogenic activity for splenic B-cells of C3H/HeJ mice and for spleen cells of C57BL/6 athymic nude mice.

Neurologic injuries, paraosteoarthropathies, and human leukocyte antigens.

The distribution of human leukocyte antigens (HLA) A and B has been evaluated in the circulatory lymphocytes of 68 patients with spinal cord injury and 32 with severe head injury. Paraosteoarthropathy (POA) was present in 43 spinal cord injury and 23 head injury patients. HLA-B 18 was found in 25.