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E Cárdenas

Publications and source records attributed to E Cárdenas.

17 recordsLinked to original sources
PubMed2001

Life cycle and reproductive parameters of Clerada apicicornis signoret (Hemiptera: Lygaeidae) under laboratory conditions.

The life cycle of Clerada apicicornis was determined under laboratory conditions. Mean development times in days were: egg 27.2, nymph I 12.5, nymph II 12, nymph III 13.4, nymph IV 16.4, nymph V 26. The life expectancy of adults ranged from 117 to 317 days (mean 196 days). Based on a cohort of 29 females of C. apicicornis, a horizontal life table was constructed. The following predictive parameters were obtained: net rate of reproduction (Ro = 48.31), intrinsic rate of population increase (r(m) = 0.153), generation time (Tc = 28.20 weeks), and finite rate of population increment (lambda = 1.16). The reproductive value (Vx) for each age class of the cohort females was calculated. The following observed parameters were calculated after mortality in each stage: net rate of reproduction (R'o=13.4), intrinsic rate of population increase (r c' =0.09 ), and finite rate of population increment (lambda' =1.1). The generation time (Tc' =27.4) was estimated using the methods of Laughlin and Bengstron. A vertical life table was elaborated and mortality was described for one generation of the cohort.

Animals↗
PubMed2001

Genetic variability among populations of Lutzomyia (Psathyromyia) shannoni (Dyar 1929) (Diptera: Psychodidae: Phlebotominae) in Colombia.

Polyacrylamide gel electrophoresis was used to elucidate genetic variation at 13 isozyme loci among forest populations of Lutzomyia shannoni from three widely separated locations in Colombia: Palambí (Nariño Department), Cimitarra (Santander Department) and Chinácota (Norte de Santander Department). These samples were compared with a laboratory colony originating from the Magdalena Valley in Central Colombia. The mean heterozygosity ranged from 16 to 22%, with 2.1 to 2.6 alleles detected per locus. Nei's genetic distances among populations were low, ranging from 0.011 to 0.049. The estimated number of migrants (Nm=3.8) based on Wright's F-Statistic, F ST, indicated low levels of gene flow among Lu. shannoni forest populations. This low level of migration indicates that the spread of stomatitis virus occurs via infected host, not by infected insect. In the colony sample of 79 individuals, the Gpi locus was homozygotic (0.62/0.62) in all females and heterozygotic (0.62/0.72) in all males. Although this phenomenon is probably a consequence of colonization, it indicates that Gpi is linked to a sex determining locus.

Animals↗
PubMed1999

Reproductive biology of Lutzomyia shannoni (Dyar) (Diptera: Psychodidae) under experimental conditions.

Baseline biological growth data of Lutzomyia shannoni (Dyar) were compared under two experimental conditions within insulated styrofoam chests and in standard laboratory incubators. The developmental time from egg to adult was 67 and 52 days, respectively. Based on cohorts of 100 females in each experiment, horizontal life tables were constructed. The following predictive parameters were obtained under each of the two conditions: net rate of reproduction (23.5 and 18.0 females per cohort female), generation time (11.4 and 9.4 weeks), intrinsic rate of population increase (0.27 and 0.30), and finite rate of population increment (1.31 and 1.36). The reproductive value for each class age of the cohort females was calculated. The observed parameters were obtained under each experimental condition: net rate of reproduction (1.9 and 2.5 females per cohort female), generation time (11.7 and 9.6 weeks), intrinsic rate of population increase (0.05 and 0.09), and finite rate of population increment (1.06 and 1.10). Vertical life tables were elaborated and mortality was described for every generation in each cohort. In addition, for two successive generations, additive variance and heritability for fecundity were estimated.

Animals↗
PubMed1997

Evaluation of different solvent systems for the extraction and fractionation of oleoresins from guajillo peppers.

Dried guajillo peppers were first extracted with four different solvents: ethanol, acetone, ethyl acetate and hexane with the aim of obtaining oleoresins which were further fractionated into red and paprika extracts. Results showed that as the polarity of the solvent increased the amount of pigments extracted also increased. Acetone had good affinity for pungent (capsaicin) compounds. Utilization of these solvents alone did not produce red and paprika oleoresins that meet commercial specifications. Fractionation of acetone extracted oleoresins with ethanol: water (90:10) yielded a precipitate and a solution. The precipitate and solution produced red and paprika extracts that meet pungency and color specifications. It was possible to obtain red and paprika oleoresins from mild guajillo peppers.

Capsicum↗
PubMed1995

[Clinical care in a recovery room. Triennial review].

OBJECTIVES: To evaluate clinical practice in our intensive care unit over a period of 3 consecutive years (January 1991-December 1993). PATIENTS AND METHODS: Retrospective computer analysis of clinical data recorded for the 1157 patients admitted during the study period. RESULTS: Seven hundred thirteen men and 443 women were admitted. Mean age was 58.8 years. Eighty-nine percent had undergone elective or emergency surgery, 7% were non surgical emergency admissions and 4% were transferred from other hospital wards. The mean stay was 3.8 days, though the mean stay for elective surgery patients was significantly shorter (p < 0.001). We assess the usefulness of the APACHE-II scale applied during the first 24 hours of admission, finding that mean scores were significantly lower (p < 0.001) for the 1089 survivors (10.2 +/- 4.7) than for the 68 patients who died (23.6 +/- 9.4). The score on the APACHE II scale was above 16 for 82% of those who died. Overall mortality for the unit was 5.9%, though the proportion was statistically higher (p < 0.001) in emergency patients. Complications developed in 299, though the number of complications was significantly lower (p < 0.001) for elective surgery patients. The patients who died required more use of invasive monitoring and mechanical ventilation (p < 0.001). CONCLUSIONS: Our review shows that mortality, lengthy of stay in the unit and number of complications were all greater among emergency admissions. The patients who died had higher mean APACHE-II scores and required more care. Computerized data collection and later analysis is a useful way to assess clinical practice and facilitate future studies.

APACHE↗
PubMedDate not supplied

Life cycle and fecundity analysis of Lutzomyia shannoni (Dyar) (Diptera: Psychodidae).

The life cycle of Lutzomyia shannoni (Dyar), was described for laboratory conditions with maximum daily temperature of 27-30 degree C, minimum daily temperatures of 22-27 degree C and relative humidity between 87-99%. Life cycle in each stage was as follows: egg 6-12 days (ave, 8.5 days); first stage larva 5-13 days (ave. 9.6 days); second stage larva 4-13 days (ave. 9.2 days); third stage larva 5-19 days (ave. 11.8 days); fourth stage larva 7-37 days (ave. 19.9 days); pupa 7-32 days (ave. 15.2 days). The life expectancy of adults ranged from 4 to 15 days (ave. 8.6 days). The entire egg to adult period ranged from 36 to 74 days (ave. 54.6 days). On average, each female oviposited 22.7 eggs; the average egg retention per female was 24.3 eggs.

Animals↗
PubMedDate not supplied

Haematophagy and cleptohaematophagy of clerada apicicornis (Hemiptera: lygaeidae), a potential biological control agent of rhodnius prolixus (Hemiptera: reduviidae).

Because of its ability to prey on Triatominae in rural houses, Clerada apicicornis has been suggested as a potential biological control agent of Rhodnius prolixus. It has also been suggested as a potential vector of mammalian trypanosomes such as Trypanosoma cruzi, because of its ability to take blood directly from mammals. To help resolve these conflicting ideas, we assessed the haematophagic behaviour of C. apicicornis by carrying out feeding trials on laboratory animals. Cleptohaematophagic behaviour was also assessed by allowing C. apicicornis to feed on R. prolixus previously engorged with avian blood. The low proportion of blood meals taken directly from laboratory animals indicates a facultative haematophagy in this species, whereas a greater proportion of nymphs and adults were able to obtain vertebrate blood by predation on engorged R. prolixus. The results suggest that C. apicicornis is unlikely to be effective as a biological control agent, but is also unlikely to have a significant role in the transmission of vertebrate pathogens.

Animals↗
PubMedDate not supplied

[Moxifloxacin].

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Anti-Infective Agents↗
PubMedDate not supplied

[Celecoxib].

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Anti-Inflammatory Agents, Non-Steroidal↗
PubMedDate not supplied

[Rofecoxib].

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Clinical Trials as Topic↗
PubMedDate not supplied

[Levofloxacin. Clinical experience with long-term treatment of osteoarticular infections].

We evaluated the efficacy and safety profile of the long-term administration of levofloxacin in osteoarticular infections. For this purpose, 50 patients were included during the years 1999 to 2001 on an initial estimation to be under treatment with this antibiotic for at least 4 weeks. Forty six percent (46%) of patients were male and received treatment during a mean-time of 122.8 days. In forty one of a total of forty nine evaluable patients (83.7%) outcome was considered satisfactory with a total recovery or improvement of disease. Clinical and analytical series of examinations were performed, with no significant abnormalities being observed. Five (5) patients presented a total of 7 adverse events: gastrointestinal intolerance (3), oral mycosis (1), petechia (1), parestesia (1) and pruriginous rash(1). Only in three cases interruption of therapy was considered necessary. In conclusion, levofloxacin presents an adequate efficacy and is a well-tolerated therapy; both characteristics make it an appropriate treatment for those infections that require long-term therapy.

Adolescent↗