The Burdens, Concerns, and Quality of Life of Patients with Gastroparesis.

AIMS: The impact of gastroparesis on patients from the patient's viewpoint is needed to better address treatment priorities. The aims of this study were to: (1) Delineate burdens and concerns of patients with gastroparesis; (2) investigate specific symptoms contributing to impaired quality of life (QOL) in gastroparesis. METHODS: The International Foundation for Functional GI Disorders gastroparesis survey questionnaire was developed to describe patients' viewpoint about their experience with gastroparesis and included Patient Assessment of Upper GI Symptoms (PAGI-SYM) and SF-36 QOL survey. RESULTS: A total of 1423 adult patients with gastroparesis completed the survey. Average duration of gastroparesis symptoms was 9.3 years with time from onset to diagnosis 5.0 years. Patients felt that they receive good information regarding treatment options from physicians, the Internet, and Facebook. Patients rated their satisfaction with available treatment for their gastroparesis as dissatisfied (33%), somewhat dissatisfied (27%), neutral (14%), somewhat satisfied (15%), and satisfied (4%). Patients felt that gastroparesis symptoms that are most important to improve with treatment are nausea, stomach pain, and vomiting. Overall, there was a decreased quality of life by SF-36. Physical health QOL score was negatively correlated with symptoms including nausea (r = -0.37), upper abdominal pain (r = -0.37), and early satiety (r = -0.37). CONCLUSIONS: This large series of patients with gastroparesis describes their burdens, concerns, and QOL. Nausea, vomiting, early satiety, and abdominal pain are important symptoms for treatment. Many patients are not satisfied with current treatments, wanting specific treatments for their disorder. Interestingly, a large number of patients find out about treatments, not only from their physician, but also using the Internet including social media.

The static allometry of sexual and non-sexual traits in vervet monkeys.

Sexual traits vary tremendously in static allometry. This variation may be explained in part by body size-related differences in the strength of selection. We tested this hypothesis with in two populations of vervet monkeys, using estimates of the level of condition dependence for different morphological traits as a proxy for body size-related variation in the strength of selection. In support of the hypothesis, we found that the steepness of allometric slopes increased with the level of condition dependence. One trait of particular interest, the penis, had shallow allometric slopes and low levels of condition dependence, in agreement with one of the most consistent patterns yet detected in the study of allometry, that of genitalia exhibitting shallow allometries.

Variation in scrotal color among widely distributed vervet monkey populations (Chlorocebus aethiops pygerythrus and Chlorocebus aethiops sabaeus).

Vervet monkeys (Chlorocebus aethiops) exhibit bright blue scrotal skin which may function to mediate social interactions by acting as a socio-sexual signal. Previous research on scrotal coloration among vervet monkeys was limited to experimental work on captive Ch. a. sabaeus, the least colorful vervet subspecies, and two field studies of the more colorful Ch. a. pygerythrus. In a study of free-ranging and captive vervet monkeys in South Africa (Ch. pygerythrus), West Africa (Ch. a. sabaeus) and the Caribbean (Ch. a. sabaeus), we examined scrotal color variation across geographically distant subspecies. We provide an exploration of how digital photographs may be used to quantify and analyze blue and green skin coloration by examining the blue-yellow opponency channel and luminance channel as color measures. We found that that at all ages the scrotal color of Ch. a. pygerythrus males was always bluer and darker than that of Ch. a. sabaeus males. Among Ch. a. pygerythrus scrotal color becomes bluer and lightens with increasing age, while the color of Ch. a. sabaeus males also lightens, but becomes less blue with increasing age. We suggest that color variation is related to maturation and may function as an age-related signal among Ch. a. pygerythrus and Ch. a. sabaeus. We also found color was related to three morphological features among adults. For Ch. a. pygerythrus, higher body weight is associated with more blue color and longer canine length is associated with lighter color. Lighter color was associated with longer body lengths among Ch. a. sabaeus. Future studies focused on color variation within age classes are needed to examine the potential signal content of color in this species.