Browse Items (192 total)

The brainstems of frogs contain many of the neurochemicals that are found in mammals. However, the clustering of nuclei near the ventricles makes it difficult to distinguish individual cell groups. We addressed this problem by combining…

Cetacean middle ears are unique among mammals in that they have an elongated tympanic membrane, a greatly reduced manubrium mallei, and an incudal crus longum that is shorter than the crus breve. Elongation of the tympanic membrane and reduction of…

Oxytocin-containing axons project from the hypothalamic paraventricular nucleus to the neurohypophysis and thoracic spinal cord to ultimately influence uterine contractions and autonomic activity, respectively. Whether or not oxytocin-immunoreactive…

New hominid fossils from the Lake Turkana Basin range in age from ca. 3.35 to ca. 1.0 Ma. Those recovered from sediments stratigraphically just above the Tulu Bor Tuff in the Lomekwi Member of the Nachukui Formation are best attributed to…

Structural characteristics of normally calcifying leg tendons of the domestic turkey Meleagris gallopavo have been observed for the first time by tapping mode atomic force microscopy (TMAFM), and phase as well as corresponding topographic images were…

Long-term potentiation is an enduring increase in synaptic efficacy following repeated stimulation of afferent fibers that is thought to underlie memory. In area CA1 of the hippocampus at least two forms of synaptic potentiation coexist at the same…

The capacity for 17-alpha and 17-Beta estradiol to modulate MPTP-induced neurotoxicity of the nigrostriatal dopaminergic system and potential antagonism of this modulation by the anti-estrogen, tamoxifen, were evaluated. Treatment of retired breeder…

Acquired hemophilia (antibodies or inhibitors to factor VIII) is the most common acquired disease affecting clotting factors. It has been described in association with autoimmune disease, malignancy, dermatologic disorders, in the postpartum period,…

A 48 year old African American woman presented with bladder pressure leading to the diagnosis of broad ligament and multiple uterine leiomyomas. She was also found to have a lateral vaginal wall mass which was confirmed to be a leiomyoma. Unlike…

Combination-sensitive neurons integrate specific spectral and temporal elements in biologically important sounds, and they may underlie the analysis of biosonar and social vocalizations. Combination-sensitive neurons are found in the forebrain of a…

The gonadal steroid hormone estrogen (E) can function as a neuroprotectant of nigrostriatal dopaminergic (NSDA) neurotoxicity, however, there exists very limited information on the role of testosterone (T) in this capacity. In the present report, the…

Mesial temporal lobe epilepsy is a relatively common form of epilepsy that afflicts many thousands of people. It has been suggested that the development of primary and secondary foci may involve mechanisms similar to long-term potentiation (LTP). In…

A model of peripheral nerve injury was used to study gender differences in the development and progression of chronic constriction injury (CCI)-induced hyperalgesia and allodynia in male and female Fischer 344 FBNF1 hybrid rats. Rats were randomly…

BiP (grp78) is a chaperone protein which can also regulate the unfolded protein response of the cell. Levels of BiP increased in cells infected by the small plaque producing, cell associated, neuroinvasive strains of HSV-1 (SP7, 490) but decreased in…

The effects of 17beta-estradiol and the anti-estrogen, tamoxifen, on methamphetamine-induced neurotoxicity of the nigrostriatal dopaminergic system were examined in ovariectomized CD-1 mice. In Experiment 1, striatal dopamine concentrations from…

In the mustached bat, delay-tuned neurons respond best to specific delays between the first harmonic frequency modulated (FM) component (FM1; 24-29 kHz) of the emitted biosonar pulse and a higher harmonic FM component in returning echoes (e.g. FM3,…

A primary axonal disease affecting the central and peripheral nervous system was discovered in a mutant strain of the Japanese quail, named quiver (Quv). We have previously demonstrated altered auditory evoked potentials in the neurofilament (NF)…

We present a multiseptated mesenchymal hamartoma of the liver in a 10-year-old male patient, a rare benign tumor of childhood. The characteristic ultrasound and CT appearances of this unusual tumor are reviewed. A single septal calcification…

To evaluate tamoxifen-induced glandular tissue density changes in women who are on an adjuvant tamoxifen therapy. We examined serial mammograms of 27 women (average age 67) who had surgery for unilateral breast carcinoma and were on tamoxifen for 5…

BACKGROUND CONTEXT: Anterior approaches to the lumbosacral spine afford the ideal window to the disc for interbody fusion. Vascular injuries represent the most feared complications of such approaches. Unfortunately, the combination of more procedures…

Considering treatment of serious mental illnesses, it might appear that the recovery model would be incompatible with any form of mandatory treatment. The authors suggest that this is not so. With individuals whose psychotic illness substantially…

Modern members of the mammalian order Cetacea (whales, dolphins and porpoises) are obligate aquatic swimmers that are highly distinctive in morphology, lacking hair and hind limbs, and having flippers, flukes, and a streamlined body. Eocene fossils…

It has been demonstrated that the nigrostriatal dopaminergic system of male mice is more sensitive to the neurotoxic effects of methamphetamine (MA). The basis for this difference can be related to oestrogen, which has the capacity to function as a…

Waxy keratoses of childhood is a rare genodermatosis previously noted in both familial and isolated presentations. Three previous cases have been described in which the lesions appeared over the trunk and extremities. We report a case in which the…

OBJECTIVE: To examine the rate of utilization of complementary and alternative medicine (CAM) in Amish women, a population that traditionally uses non-mainstream medicine. METHODS & RESULTS: Sixty-six Amish women completed a survey concerning their…

OBJECTIVE: The Fourth International Workshop on Gestational Diabetes recently suggested that two techniques, a 2-tiered protocol and a 1-tiered protocol, to screen for gestational diabetes mellitus are acceptable alternatives. This study was…

Prostate apoptosis response-4 (Par-4) is a leucine zipper protein that promotes neuronal cell death in Alzheimer's disease (AD). Neuronal degeneration in AD may result from extracellular accumulation of amyloid beta peptide (Abeta) 1-42. To examine…

Substance P (SP) levels in the spinal cords of very old rats are less than the levels in younger rats (Bergman et al., 1996). After injury to a peripheral nerve in young rats, immunoreactivity (ir) to the SP receptor, NK-1 (neurokinin-1), increases…

In order to assess the presence of tuberculosis in Pleistocene bison and the origin of tuberculosis in North America, 2 separate DNA extractions were performed by 2 separate laboratories on samples from the metacarpal of an extinct long-horned bison…

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