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PubMed2002

Distribution of locoweed toxin swainsonine in populations of Oxytropis lambertii.

Oxytropis lambertii has been considered to be one of the major locoweeds responsible for livestock poisoning on rangelands, but there has been much confusion as to its taxonomic identity. The objective of this study was to conduct a field survey of several populations of each of the three varieties [var. lambertii Pursh; var higelovii A. Gray; var. articulata (E. Greene) Barneby] to document the presence or absence of the locoweed toxin, swainsonine. Swainsonine was found at detectable levels (>0.001% dry weight) in only five populations of var. higelovii in the southwest portion of its distribution in southern Utah, Arizona, and southwestern New Mexico, USA. No swainsonine was detected in populations in the northeast areas of its distribution (eastern Utah, Colorado, northeastern New Mexico, USA). The other varieties, articulata and lambertii, also did not contain swainsonine. It is suspected that a plant fungal endophyte may be responsible for the high variability in swainsonine content in populations of O. lambertii.

Analysis of Variance↗
PubMedDate not supplied

Occurrence of esophageal and gastric cancer in Alaska Natives, 1969-2003.

BACKGROUND: Early reports of esophageal and gastric cancer in American Indians/Alaska Natives documented high rates. METHODS: Esophageal and gastric cancers in Alaska Natives were reviewed for 1969-2003 using the Alaska Native Tumor Registry database. Alaska Native incidence rates were age-adjusted and compared to rates of several US populations. RESULTS: The incidence of esophageal and gastric cancer has remained relatively stable during the 35-year period. Gastric cancer is higher than that seen in US Whites, Blacks and American Indians of New Mexico and similar US Asian/Pacific Islanders. Esophageal cancer incidence is higher than US Whites, Asian/Pacific Islanders and American Indians of New Mexico but similar to US Blacks. CONCLUSION: The rates of esophageal and gastric cancer in the Alaska Native population have remained high over 35 years. While the rate of gastric cancer has declined among US Whites, a similar decline has not been seen in Alaska Natives.

Alaska↗
PubMed2001

Screening for undernutrition in geriatric practice: developing the short-form mini-nutritional assessment (MNA-SF).

BACKGROUND: The Mini-Nutritional Assessment (MNA) is a validated assessment instrument for nutritional problems, but its length limits its usefulness for screening. We sought to develop a screening version of this instrument, the MNA-SF, that retains good diagnostic accuracy. METHODS: We reanalyzed data from France that were used to develop the original MNA and combined these with data collected in Spain and New MEXICO: Of the 881 subjects with complete MNA data, 151 were from France, 400 were from Spain, and 330 were from New MEXICO: Independent ratings of clinical nutritional status were available for 142 of the French subjects. Overall, 73.8% were community dwelling, and mean age was 76.4 years. Items were chosen for the MNA-SF on the basis of item correlation with the total MNA score and with clinical nutritional status, internal consistency, reliability, completeness, and ease of administration. RESULTS: After testing multiple versions, we identified an optimal six-item MNA-SF total score ranging from 0 to 14. The cut-point score for MNA-SF was calculated using clinical nutritional status as the gold standard (n = 142) and using the total MNA score (n = 881). The MNA-SF was strongly correlated with the total MNA score (r = .945). Using an MNA-SF score of > or = 11 as normal, sensitivity was 97.9%, specificity was 100%, and diagnostic accuracy was 98.7% for predicting undernutrition. CONCLUSIONS: The MNA-SF can identify persons with undernutrition and can be used in a two-step screening process in which persons, identified as "at risk" on the MNA-SF, would receive additional assessment to confirm the diagnosis and plan interventions.

Aged↗
PubMed2004

How representative are the surveillance, epidemiology, and end results (SEER) program cancer data of the United States?

OBJECTIVE: Data from the 11 Surveillance, Epidemiology, and End Results tumor registries cover 14% of the U.S. population and are often used to provide national estimates of cancer incidence and survival. Cancer mortality data for the U.S. and for SEER are compared to assess the representation of SEER to the U.S. METHODS: Comparisons between US and SEER cancer mortality were made for 16 of the leading causes of cancer death. Cancer site-specific comparisons were also made by race and sex. In addition, tobacco-related cancers were considered. Analyses were performed for the years when all 11 SEER registries were included in the SEER program. Poisson regression was used to estimate site-specific cancer mortality rate ratios between the U.S. and SEER. RESULTS: Cancer site-specific mortality rates derived from SEER data tend to under-represent the U.S. cancer mortality experience for white males and females and black males. Under-representation is observed across the majority of SEER registries, with the highest amount of under representation in Utah and New Mexico. Under-representation of SEER data compared with US data is noticeably greater among tobacco-related cancers, particularly in Utah and New Mexico. CONCLUSION: For certain cancer sites, particularly tobacco-related cancers, the SEER coverage population is not representative of the U.S. population.

Demography↗
PubMed1993

The interaction of popular and clinical diagnostic labeling: the case of embrujado.

This paper explores the effect of a popular diagnosis of distress, "bewitchment," on diagnosis, treatment and outcomes of psychiatric illness in a small group of Hispanic patients in New Mexico. Two major approaches to such "culture-bound" illnesses in clinical settings are critiqued and synthesized in suggesting a practical way to understand how both folk and psychiatric explanations can affect experience with, and of psychiatric patients who present with their own culturally patterned diagnoses. Further study suggests that clinically focused ethnography can address the issue of change or persistence in both lay and clinical explanations of illness as they interact in a clinical setting.

Adult↗
PubMed1985

Comparison of suicides among Anglos and Hispanics in five southwestern states.

Little is known about deaths resulting from self-inflicted violent behavior for Hispanic Americans. To learn more about suicide for Hispanics of Mexican origin (Mexican Americans) we focused on the five southwestern states (Arizona, California, Colorado, New Mexico, and Texas) in which more than 60% of all Hispanics in the United States reside (86% of whom are Mexican American). We obtained data on the number of suicide deaths in the white population, with Hispanics and Anglos (white, non-Hispanic) identified separately. Suicides of Anglos were used as a comparison group. Results show that the suicide rate for whites in the five southwestern states (15.6) was almost one-fourth higher than the rate for whites nationally (12.7). Suicide rates for the two ethnic groups, however, showed the rate for Hispanics (9.0) to be less than the national rates for whites (12.7) and one-half that of Anglos residing in the same area (17.3). The lower suicide rate for Hispanics relative to Anglos is seen for both males and females. The ratio of male and female suicides for Hispanics was almost twice that for Anglos (4.0 to 1 for Hispanics and 2.3 to 1 for Anglos). More than 1 in 3 Hispanic men who committed suicide and more than 1 in 4 Hispanic women who committed suicide are under the age of 25.

Adolescent↗
PubMedDate not supplied

Outcomes of border health Spanish/English chronic disease self-management programs.

PURPOSE: The purpose of this study was to evaluate the community-based Chronic Disease Self-management Program (CDSMP) and the Spanish-language version (Tomando Control de Su Salud) programs as delivered in settings along the Texas/New Mexico/Mexico border. The programs had proven effective in randomized trials, and the authors wished to determine if they would be as effective when administered by others to different populations. METHODS: The El Paso Diabetes Association administered the CDSMP and Tomando to 445 persons with chronic illness (two thirds with diabetes) in Texas, New Mexico, and Mexico. Four-month and 1-year outcomes were compared to baseline using t tests of change scores. Regression models were used to test whether baseline demographics and self-efficacy were associated with positive outcomes of the programs. RESULTS: Participants showed improvements in health behaviors, health status, and self-efficacy at both 4 month and 1 year. Baseline self-efficacy and 4-month change in self-efficacy were significantly associated with improved 1-year outcomes. CONCLUSIONS: The CDSMP and Tomando are effective when used in settings other than that of the original study for populations other than those for which they were initially developed.

Attitude to Health↗
PubMed1999

Predictors of skeletal muscle mass in elderly men and women.

BACKGROUND: Elderly men and women lose muscle mass and strength with increasing age. Decreased physical activity, hormones, malnutrition and chronic disease have been identified as factors contributing to this loss. There are few data, however, for their multivariate associations with muscle mass and strength. This study analyzes these associations in a cross-sectional sample of elderly people from the New Mexico Aging Process Study. METHODS: Data collected in 1994 for 121 male and 180 female volunteers aged 65-97 years of age enrolled in The New Mexico Aging Process Study were analyzed. Body composition was measured using dual energy X-ray absorptiometry; dietary intake from 3 day food records; usual physical activity by questionnaire; health status from annual physical examinations; and serum testosterone, estrone, sex-hormone binding globulin (SHBG), and insulin-like growth factor (IGF1) from radioimmunoassays of fasting blood samples. Statistical analyses included partial correlation and stepwise multiple regression. RESULTS: The muscle mass and strength (adjusted for knee height) decreased with increasing age in both sexes. The muscle mass was significantly associated with serum free-testosterone, physical activity, cardiovascular disease, and IGF1 in the men. In the women, the muscle mass was significantly associated with total fat mass and physical activity. Age was not associated significantly with muscle mass after controlling for these variables. Grip strength was associated with age independent of muscle mass in both sexes. Estrogen (endogenous and exogenous) was not associated with muscle mass or strength in women. CONCLUSIONS: Age-related loss of muscle mass and strength occurs in relatively healthy, well-nourished elderly men and women and has a multifactorial basis. Sex hormone status is an important factor in men but not in women. Physical activity is an important predictor of muscle mass in both sexes.

Aged↗
PubMed2000

Skeletal manifestations of bear scavenging.

In many partially or fully skeletonized forensic cases, postmortem animal damage is simply attributed to rodents or carnivores; little effort is made to determine the general size or assign a genus to the scavenger. As one of the largest wild carnivores to inhabit mountainous and forested areas throughout the continental United States, Alaska, and Canada, black bears (Ursus americanus) must be considered possible suspects when skeletonized remains are located showing marks of carnivore damage. Since 1995, three cases of known bear scavenging have been referred to the Maxwell Museum's Laboratory of Human Osteology by the New Mexico Office of the Medical Investigator for skeletal analysis. These cases comprise a total of seven individuals, and all of the remains were deposited in high altitude forests of New Mexico along the western border with Arizona with a minimum of 4 months exposure before recovery. When analyzed, all cases shared a similar pattern of element survivorship and damage. We suggest that bears can be distinguished from members of the canid family, the other common scavenger of human remains, based on the representation of skeletal elements at the scene. Rates and patterns of damage are not as accurate as element recovery in the discrimination of scavenger genus. Use of this information should allow forensic anthropologists to better understand the postmortem taphonomic processes that shaped the skeletal remains, and hopefully prevent misdiagnoses of perimortem trauma on elements not typically scavenged by canids.

Adult↗
PubMed2006

Transmission of bovine coronavirus and serologic responses in feedlot calves under field conditions.

OBJECTIVE: To compare shedding patterns and serologic responses to bovine coronavirus (BCV) in feedlot calves shipped from a single ranch in New Mexico (NM calves) versus calves assembled from local sale barns in Arkansas (AR calves) and to evaluate the role of BCV on disease and performance. ANIMALS: 103 feedlot calves from New Mexico and 100 from Arkansas. PROCEDURES: Calves were studied from before shipping to 35 days after arrival at the feedlot. Nasal swab specimens, fecal samples, and serum samples were obtained before shipping, at arrival, and periodically thereafter. Bovine coronavirus antigen and antibodies were detected by use of an ELISA. RESULTS: NM calves had a high geometric mean titer for BCV antibody at arrival (GMT, 1,928); only 2% shed BCV in nasal secretions and 1% in feces. In contrast, AR calves had low antibody titers against BCV at arrival (GMT, 102) and 64% shed BCV in nasal secretions and 65% in feces. Detection of BCV in nasal secretions preceded detection in feces before shipping AR calves, but at arrival, 73% of AR calves were shedding BCV in nasal secretions and feces. Bovine coronavirus infection was significantly associated with respiratory tract disease and decreased growth performance in AR calves. CONCLUSIONS AND CLINICAL RELEVANCE: Replication and shedding of BCV may start in the upper respiratory tract and spread to the gastrointestinal tract. Vaccination of calves against BCV before shipping to feedlots may provide protection against BCV infection and its effects with other pathogens in the induction of respiratory tract disease.

Animals↗
PubMed1977

An evolving pattern of human hydatid disease transmission in the United States.

Echinococcus granulosus infection was being acquired in the contiguous United States by Virginia sharecroppers and small-holders by the turn of the century. The last recorded human infection from that general area was diagnosed in 1947. By 1920 human infections were also being acquired in the lower Mississippi valley. Apparently, infection in both of these areas was maintained chiefly in swine. By 1940 a third transmission area definitely existed in the Central Valley of California, with its reservoir intermediate host sheep. Seemingly, infection has been disseminated from these California foci into Utah and more recently into northern New Mexico and Arizona. Human populations now at unusual risk in the western United States are transhumant sheep ranchers, including Basque-Americans in California, Mormons in central Utah, and Navajo and Zuni Indians in New Mexico and Arizona. Conditions highly favorable to E. granulosus transmission, intensification and spread now exist throughout relatively large areas of the American West.

Adolescent↗
PubMed2001

Geographical variation in mortality from systemic lupus erythematosus in the United States.

The aim was to identify demographic and environmental factors that affect the incidence and course of systemic lupus erythematosus (SLE) by studying geographical variation in mortality from the disease. Counts of SLE deaths during a 10-y period were determined for each of the 3111 counties in the United States. The counts were subjected to statistical techniques for detecting spatial clusters with significantly higher or lower mortality than expected. Census data were used to compare attributes of the resulting clusters. Four clusters with significantly elevated SLE mortality were identified. They were centered in Alabama, Arkansas, Louisiana and New Mexico and had 41-65% more SLE deaths than expected. Four other clusters with significantly low mortality were centered in Minnesota, Vermont, Virginia and Washington and had 32-44% fewer deaths than expected. Comparison of SLE mortality rates between the New Mexico and Vermont clusters yielded relative risks of 3.2, 3.4 and 5.9 for white, black and other race women, respectively, and of 2.1, 5.2 and 'undefined' for white, black and other race men. Census data showed that the clusters with elevated mortality had higher poverty rates and/or greater concentrations of ethnic Hispanics than those with lower mortality. SLE mortality rates show great regional variation within the United States. The variation appears to reflect, in part, geographical patterns in socioeconomic status and in the distribution of persons of Hispanic origin.

Adolescent↗
PubMed1996

Improving survival for patients with prostate cancer diagnosed in the prostate-specific antigen ERA.

OBJECTIVES: Although prostate-specific antigen (PSA) screening has not been demonstrated to reduce prostate cancer mortality in the clinical trial or population setting, the use of PSA for screening increased during the early 1990's. A clinical trial is currently underway to test the efficacy of PSA screening; however, the results will not be available for at least 10 years. To address concerns about the effectiveness of PSA screening in the near term, population-based assessments of PSA screenings are needed. To reduce mortality, PSA screening must first produce improved survival. In New Mexico, increased screening was associated with a stage migration from distant to earlier stages and an increase in 5-year relative survival, suggesting that PSA screening may be effective. METHODS: To further investigate early indicators of the effectiveness of PSA screening in New Mexico, we examined temporal trends in survival for the period 1983-1992, using proportional-hazard models to estimate the risk of death by year of diagnosis, adjusted for age, stage, grade, ethnicity, and initial treatment. RESULTS: We found the risk of death following the diagnosis of local or regional-stage prostate cancer decreased in the 1987-1988 (relative-risk [RR] = 0.9 [95% confidence interval (CI) 0.8, 1.1]), 1989-1990 [RR = 0.9 [0.8, 1.0]), and 1991-1992 (RR =0.7 [0.6, 0.9]) periods compared with the 1983-1984 period. Men treated with radical prostatectomy were at increased risk between 1985 and 1990, compared with those treated in the 1983-1984 period. However, for men diagnosed and treated in the 1991-1992 period, risks were lower than in the 1983-1984 period (RR =0.8 [0.4, 1.5]). CONCLUSIONS: The earlier stage at diagnosis and the improved survival during the period of increased PSA screening are consistent with changes expected from an effective screening test and treatment modality.

Age Distribution↗
PubMed1986

Stomach and colorectal cancers in Puerto Rican-born residents of New York City.

Colorectal cancer incidence and mortality rates for Puerto Rican-born residents in New York City (PR-NYC) for 1975-79 were about two times those for Puerto Ricans living in Puerto Rico (PR-PR) and one-half to almost two-thirds those for other whites in New York City. From 1958 to 1979, colon cancer mortality rates for PR-NYC increased dramatically (i.e., 212% in males and 54% in females), whereas in PR-PR, male rates increased only slightly and female rates remained constant. For stomach cancer, incidence rates for male and female PR-NYC were slightly, but not significantly, higher than those for male and female PR-PR. In contrast, stomach cancer mortality rates for PR-NYC were lower than those for PR-PR throughout the survey period, and mortality decreased substantially in all racial-ethnic groups in New York City and Puerto Rico from 1958 to 1979. Results of this study indicated that the changes in colorectal and stomach cancer incidence and mortality in Puerto Rican-born residents after migration to New York City, although not as dramatic as in migrants from Japan and Eastern Europe, were comparable to those observed for Hispanic migrants to New Mexico and Los Angeles.

Adult↗
PubMed2001

Geographical distribution of rodent-associated hantaviruses in Texas.

The purpose of this study was to increase our knowledge of the geographic distribution and natural host range of hantaviruses in Texas, southeastern New Mexico, and Mexico. Blood samples from 3,225 wild rodents, representing 34 species, were tested for hantavirus antibody (IgG), using an enzyme-linked immunosorbent assay. Hantavirus antibody was found in one or more rodents from each of 13 counties in Texas, Otero County in southeastern New Mexico, and Mexico State (central Mexico). The 133 antibody-positive rodents included seven Peromyscus species (P. attwateri, P. boylii, P. hylocetes, P. leucopus, P. maniculatis, P. melanotis, and P. pectoralis), Sigmodon hispidus, Oryzomys palustris, two Reithrodontomys species (R. fulvescens and R. megalotis), Neotoma albigula, and Perognathus merriami. This study provides further evidence that rodent-associated hantaviruses are geographically widely distributed in Texas. The discovery of antibody in P. hylocetes and P. melanotis is evidence that peromyscine rodents in Mexico are naturally associated with viruses belonging to the genus Hantavirus.

Animals↗
PubMed2001

Continuation of the decline in prevalence of anemia in low-income infants and children in five states.

OBJECTIVE: To examine whether there is a continuation of the decline in prevalence of anemia among low-income infants and children 6.0 to 59.9 months old from the early 1980s to the mid-1990s. STUDY DESIGN: Cross-sectional trend analysis of data from the Centers for Disease Control and Prevention's Pediatric Nutrition Surveillance System from the 5 states (Colorado, New Mexico, Oklahoma, Utah, and Vermont) that have been using the same laboratory method for anemia screening since 1984 or earlier. RESULTS: The overall prevalence of anemia decreased substantially in each state from the early 1980s to the mid-1990s as follows: Colorado by 52%; New Mexico by 75%; Oklahoma by 67%; Utah by 57%; and Vermont by 48%. In each state, the prevalence of anemia declined for children of different age groups, birth weights, genders, type of pediatric care visit (screening or follow-up), and most race/ethnic groups. CONCLUSIONS: The decline in the prevalence of anemia initially observed in the 1980s continued well into the 1990s. This decline is likely attributable to better iron nutrition related to greater usage of iron-fortified products and possibly better iron bioavailability in some of the food products.

Anemia↗