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Biomedical subjects

J Baxter

Publications and source records attributed to J Baxter.

124 records · Page 7Linked to original sources
PubMed1966

Origin and characteristics of endogenous lipid in thoracic duct lymph in rat.

Thoracic duct lymph of rats eating a fat-free diet contained 7 mg of lipid per hr. The lipid was 70% triglyceride, and largely in the d < 1.006 lipoprotein fraction. Lipid of the d < 1.006 fraction of the lymph was many times more concentrated than that of the blood plasma at the same time. It reached the thoracic duct via lymphatics from the intestine; little entered from the liver. The fatty acid moiety composing over three-fourths of the lymph lipid mass was undoubtedly derived in part from bile lipid-possibly to the extent of roughly 50%, and in some part from other intraluminal materials. Studies with labeled palmitic acid indicated that little circulating free fatty acid was taken up by the intestinal mucosa and incorporated into lymph lipid.

Animals↗
PubMedDate not supplied

Cultivation of the liver forms of Plasmodium vivax in human hepatocytes.

The blood schizogonic cycle of human malaria parasites has thus far been the most exhaustively studied phase of parasite development. However, before entering red blood cells (RBCs), the parasite undergoes its first multiplication not in blood, but in hepatic cells. These hepatic stages were the last to be discovered and only a few studies have been performed in humans and other primates. Despite recent advances, in vivo studies have limitations and other approaches such as cultures of these liver forms may be necessary to investigate their chemosensitivity and their biochemical or immunological properties. Recently, sporozoites of species of rodent malaria have been made to infect cultured cell lines or primary hepatocyte cultures. We report here that the complete cycle of the human malaria parasite Plasmodium vivax can be obtained in primary cultures of human hepatocytes up to release of merozoites able to penetrate RBCs.

Cells, Cultured↗
PubMedDate not supplied

Physician referral patterns to a breast cancer support program.

PURPOSE: The purpose of this study was to describe the differences between physicians who did and did not refer their patients with breast cancer to the American Cancer Society's Reach to Recovery program, as well as to determine the factors associated with these physician referral patterns. DESCRIPTION OF STUDY: This descriptive cross-sectional study included 54 physicians who had and 23 physicians who had not referred their patients with breast cancer to the Mile High Unit Reach to Recovery program in 1999. Participating physicians completed a questionnaire about their knowledge, behaviors, and beliefs regarding Reach to Recovery, the characteristics of the patients they referred, and their own demographic and practice characteristics. RESULTS: General surgeons were more likely than all other specialties to refer patients to the Reach to Recovery program. The program is a part of the American Cancer Society. Feedback from patients about their experiences with Reach to Recovery and the proportion of patient time spent caring for patients with breast cancer were all positively associated with referral. CLINICAL IMPLICATIONS: These findings show that those providing support programs, such as Reach to Recovery, need to use targeted strategies to ensure that physicians are aware of the services they provide and that patients relay their experiences back to their referring physician. Because the value of social support programs for women with breast cancer has been established, physicians can become valuable partners in helping more women gain access to these programs.

Adult↗
PubMedDate not supplied

An innovative, interdisciplinary educational experience in field research.

Although interdisciplinary practice is necessary to meet the complex health needs of populations, there are few planned interdisciplinary learning experiences within educational programs for the health professions. The authors describe an interdisciplinary learning experience in field research for students and faculty members from schools of nursing and medicine.

Education, Medical, Undergraduate↗
PubMedDate not supplied

Breast cancer knowledge, attitudes, and behaviors: a comparison of rural health and non-health workers.

The present study surveyed the current levels of knowledge and the attitudes, beliefs, and behaviors of health workers (mostly nurses) with respect to breast cancer and its early detection. In addition, health workers were compared with non-health workers to determine whether the two groups differed with respect to the above variables. The sample comprised 402 women sampled from work sites in a rural community in the Midwest. The results indicated that health workers (n = 96) scored very high on knowledge, had a very positive attitude toward the notion of early detection, and reported strong intentions concerning future participation in a variety of early detection behaviors. Fifty % performed breast self-examinations once a month or more frequently. A stepwise discriminant analysis found that, compared to non-health workers, health workers saw mammography as less dangerous, believed breast cancer to be less common and its causes less controllable, and were less likely to perceive early detection as being beneficial. On the other hand, health workers scored higher than non-health workers on self-efficacy, breast self-examination frequency, and importance of breasts in determining one's self concept. Health workers also rated breast cancer as being more life-threatening and were more likely to believe that the disease was caused by external as opposed to internal factors.

Adult↗
PubMedDate not supplied

Prevalence of aortic aneurysms in the Twin Cities metropolitan area, 1979-84.

The discharge summaries for Minneapolis-St. Paul metropolitan area residents hospitalized during 1979-84 were reviewed for diagnoses of aortic aneurysms. Annual age-specific and age-adjusted sex-specific hospital discharge diagnosis rates were calculated for all aortic aneurysms, dissecting aortic aneurysms, thoracic aortic aneurysms (nondissecting), and abdominal aortic aneurysms (nondissecting). For each aortic aneurysm type, hospital discharge diagnosis rates were found to increase with age for both men and women. Abdominal aortic aneurysms were the most common type reported (age-adjusted annual rates for men varied between 40.6 and 49.3 per 100,000 population; for women, between 6.8 and 12.0 per 100,000 population). Men were noted to have higher rates for each aneurysm type. An increasing temporal trend was observed for all aortic aneurysms and abdominal aortic aneurysms among men. These findings are reviewed in light of recent data on mortality from aortic aneurysms in the United States.

Adult↗
PubMedDate not supplied

Association of education level with atherogenic diets in a rural biethnic population.

Better definition of dietary intakes among subpopulations will facilitate the implementation of relevant public health interventions. This study describes total calorie and macronutrient intake by level of education as reported by Hispanic and non-Hispanic white persons in the rural San Luis Valley of southern Colorado. Current diet was assessed for a geographically based sample of 552 Hispanic and 754 non-Hispanic white (NHW) adults 30-74 years of age in two counties of rural southern Colorado 1984-1988). Diet was assessed by 24-hour recall. Hispanic men and women reported lower total calorie intakes at all ages than NHWs; however, the macronutrient composition was similar between groups (38.5% and 46.0% of calories from fat and carbohydrate, respectively). Ethnic differences in body size and reported physical activity did not account for ethnic differences in reported calorie intake. In both ethnic groups, subjects with more education reported higher calorie intake and less atherogenic diets (lower total fat, saturated fat, cholesterol, and Keys Index; higher polyunsaturated fat, P/S ratio, and total carbohydrate). In Hispanics and NHWs, lower education groups may require targeted interventions to decrease total fat, saturated fat, and cholesterol. Further study is needed to understand the ethnic difference in reported calorie intake.

Adult↗
PubMedDate not supplied

Ethnic differences in micronutrient intake in a rural biethnic population.

Differences in micronutrient intake have been observed between populations of differing socioeconomic status (SES) and ethnicity. This study reports micronutrient intake among Hispanic and non-Hispanic white (NHW) persons in the rural San Luis Valley of southern Colorado. Current diet was assessed for a geographically based sample of 552 Hispanic and 754 NHW adults 30-74 years of age in two counties of rural southern Colorado (1984-1988). Diet was assessed by 24-hour recall. NHWs reported higher mean calorie intakes than Hispanics of both genders. NHWs had greater intakes of calcium, magnesium, potassium, phosphorus, riboflavin, niacin, zinc, vitamin A, and vitamin C than Hispanics, after accounting for ethnic differences in gender, age, and calorie intake. Differences in intake by gender were observed within and between ethnic groups. After adjusting for gender, age, ethnicity, and calories, we observed no statistically significant trends by SES measures. We conclude that diets of Hispanic adults would benefit from the addition of fresh fruits, vegetables, and high-calcium foods.

Adult↗
PubMedDate not supplied

Many voices--sociocultural results of the ethnocultural communities facing AIDS study in Canada.

This paper presents the results of Phase II of the Ethnocultural Communities Facing AIDS Study, the sociocultural investigation of factors contributing to risk behaviour associated with HIV/AIDS in six ethnocultural communities in Canada in three urban sites. In Vancouver, the South Asian and Chinese communities were studied, the Horn of Africa and English-speaking Caribbean communities in Toronto and the Latin American and Arabic-speaking communities in Montreal. Results demonstrated that there are common elements across these ethnocultural communities that increase the risk for HIV transmission. HIV/AIDS awareness and prevention in ethnocultural communities must address sociocultural differences, particularly sex role differences between men and women in terms of power within relationships to negotiate for safer sexual practices.

Acculturation↗