Sperm chromosome segregation of rob(4;16) and rob(4;16)inv(4) in the brown brocket deer (Mazama gouazoubira).

The genus Mazama stands out among the Neotropical deer due to their wide intra and interspecific karyotypic diversification, which is associated with an accentuated chromosomal fragility. There are reports of heterozygous Robertsonian translocation (RT) carriers in a free-range population of Mazama gouazoubira (brown brocket deer), as well as in captive animals of this and other species of the genus. To analyze possible negative impacts of heterozygous chromosome rearrangements on reproductive fitness of the carriers, we performed an analysis of sperm meiotic segregation in four brown brocket bucks, carriers of a rob(4;16), and compared the results with those of a normal buck. We established a reliable FISH and sperm-FISH protocol for the brown brocket deer using bovine (Bos taurus; diploid number, 2n = 60) whole chromosome painting (WCP) and BAC probes. Using BAC probes, we revealed the presence of a paracentric inversion (PAI) of the fused chromosome 4 in two of the four analyzed RT carriers. The mean frequency of normal/balanced sperm in the translocation carriers was significantly lower than in the normal buck (94.78% vs 98.40%). The mean value of total unbalanced spermatozoa was almost doubled in the RT/PAI carriers (6.68%) when compared to RT carriers (3.76%), but the difference was not statistically significant. This study demonstrated the efficiency of FISH with bovine WCP and BAC probes in the characterization of chromosome rearrangements and gametic segregation patterns in brown brocket deer. Our results indicate a low to moderate increase in the rates of unbalanced meiotic segregation products in brown brocket bucks heterozygous for RT and RT/PAIs.

A comparison between aspirin and pentoxifylline in relieving claudication due to peripheral vascular disease in the elderly.

Peripheral vascular disease (PVD) commonly presents with leg claudication during walking and eventually limits the walking distance and daily activities. Aspirin or pentoxifylline are commonly prescribed to improve blood flow. Aspirin works through its antiplatelet aggregation mechanism, and pentoxifylline increases the red blood cell flexibility, which leads to increased tissue perfusion. Data on comparative studies of these drugs for improving claudication in the elderly are limited. The objective of this study was to compare pain relief offered by either aspirin or pentoxifylline for walking leg pain in the elderly with PVD. Patients sixty-five years or older with claudication were randomly assigned to receive aspirin or pentoxifylline. Their reported level of walking claudication pain with use of the visual analogue scale (0-5) and the distance walked during exercises were recorded. Six weeks later the same parameters were recorded and results were compared with Student's t test, and a P value less than 0.05 was considered a statistically significant difference. Of the 90 patients who participated, 45 received aspirin (325 mg daily) and 45 were prescribed pentoxifylline (400 mg tid) for six weeks. Both the aspirin and the pentoxifylline groups reported a moderate level of pain (2/5) and remained about the same (2/5 for aspirin and 1/5 for pentoxifylline, P = 0.9, NS) after six weeks. However, the pentoxifylline group reported a farther walking distance of 2 miles compared with the aspirin group of 1.2 miles (P < 0.05). The level of pain did not change significantly with either aspirin or pentoxifylline, but the walking distance was farther with the pentoxifylline group.

Gait training and falls in the elderly.

1. Patients with gait and balance disorder, as measured by the Tinetti Mobility Scale, can benefit from physical therapist-assisted gait training. 2. Score in the Tinetti Mobility Scale negatively correlates with the number of recurrences of falls. 3. The nurse's role includes identification of those who are at risk for falls, assessment of their response to training in preventing recurrence of falls, and the effect of training in their mobility and independence.

Raised leg exercises for leg edema in the elderly.

UNLABELLED: Leg edema is a common problem in the elderly and requires further evaluation and management. METHOD: From October 1990 to July 1992, 245 patients presented to the Cleveland Clinic Florida with leg edema. All patients were counseled about the benefits of twenty-minute, three-times-a-day raised-leg exercises. Fifty seven (57) of the 245 patients were not compliant with this regimen (nonexercise group). Although not true controls, they formed a comparison group for those who performed the exercise regimen. The exercise group was composed of 188 patients with a mean age of 73 +/- 6.8 years, 25 (13%) men and 163 (87%) women; the nonexercise group was composed of 57 patients with a mean age of 71.9 +/- 4.3, 19 (33%) men and 38 (67%) women. Workup for leg edema included: comprehensive history, clinical examination including prostate or pelvic examination, complete blood count, chemistry profile, thyroid profile, electrocardiogram, chest radiograph, and, when indicated, pelvic or leg ultrasound and pelvic computed tomographic scan. The circumference of the leg with the maximum amount of edema was measured initially and on the fourth week. RESULTS: In this study, the common causes of leg edema in the elderly population were venous stasis (63.2%), drug induced (13.8%), and heart failure (15.1%). Postphlebitic syndrome, cirrhosis, lymphedema, lipedema, prostate carcinoma (CA), and ovarian mass were the less frequent findings. Upon comparison of the circumference of leg edema on initial visit and four weeks after, both the exercise and nonexercise groups showed significant decreases in the measurement of the leg edema (P < .001) except those caused by lymphedema.(ABSTRACT TRUNCATED AT 250 WORDS)