Allee effects reduce the viability of small populations in many different ways, which act synergistically to lead populations towards extinction vortexes. The Sierra Morena wolf population, isolated in the south of the Iberian Peninsula and composed of just one or few packs for decades, represents a good example of how diverse threats act additively in very small populations. We sequenced the genome of one of the last wolves identified (and road-killed) in Sierra Morena and that of another wolf in the Iberian Wolf Captive Breeding Program and compared them with other wolf and dog genomes from around the world (including two previously published genome sequences from northern Iberian wolves). The results showed relatively low overall genetic diversity in Iberian wolves, but diverse population histories including past introgression of dog genes. The Sierra Morena wolf had an extraordinarily high level of inbreeding and long runs of homozygosity, resulting from the long isolation. In addition, about one-third of the genome was of dog origin. Despite the introgression of dog genes, heterozygosity remained low because of continued inbreeding after several hybridization events. The results thus illustrate the case of a small and isolated wolf population where the low population density may have favoured hybridization and introgression of dog alleles, but continued inbreeding may have resulted in large chromosomal fragments of wolf origin completely disappearing from the population, and being replaced by chromosomal fragments of dog origin. The latest population surveys suggest that this population may have gone extinct.
To evaluate a store-and-forward teledermatology system aimed at the routine triage of patients with skin cancer.Design: A multicenter, longitudinal, 4-phase, descriptive and evaluation study of a referred sample of patients attended through teleconsultation between March 2004 and July 2005. Clinical and dermoscopical examination and histopathological study were considered the gold standard.Setting: A skin cancer unit of a public university hospital and 12 primary care centers in southern Spain. Patients:The study population comprised patients with circumscribed lesions fulfilling at least 1 of the following criteria: changes in ABCD criteria (asymmetry, border irregularity, color variegation, and diameter Ͼ6 mm), recent history, multiple melanocytic lesions, symptoms, and/or patient's application for surgical treatment and concern about moles.Interventions: Diagnosis, diagnostic category (malignant lesions, high-risk lesions, benign lesions, special lesions, and other lesions), diagnostic confidence level on a 3-point scale, and management decision (referral vs nonreferral) were listed after the evaluation of each teleconsultation. A face-to-face evaluation and biopsy of selected patients were performed. Main Outcome Measures:The filtering percentage, as the percentage of patients not referred to the face-to-face clinic, as well as waiting intervals and pick-up or skin cancer detection rates were evaluated as effectiveness indicators. Reliability measures ( agreement), accuracy, and diagnostic performance indicators (validity) were also evaluated.Results: The filtering percentage was 51.20% (95% confidence interval [CI], 49.00%-53.40%). The waiting interval to attend the clinic was 12.31 days (95% CI, 8.22-16.40 days) through teledermatology and 88.62 days (95% CI, 38.42-138.82 days; PϽ.001) for the letter referral system. Pick-up rates were 2.02% (95% CI, 1.10%-2.94%) for malignant melanoma and 27.94% (95% CI, 24.98%-30.90%) or 1:3.71 for patients with any malignant or premalignant lesion. Intraobserver agreement was =0.91 (95% CI, 0.89-0.93) for the management decision and =0.95 (95% CI, 0.94-0.96) for the diagnosis. Interobserver concordance was =0.83 (95% CI, 0.78-0.88) for the management decision and = 0.85 (95% CI, 0.79-0.91) for the diagnosis. Accuracy was =0.
SFTD has been demonstrated to be effective and accurate as a preoperative tool for nonmelanoma skin cancer, avoiding unnecessary visits to the hospital and shortening the waiting intervals to the surgical treatment.
When the three age groups were compared,the AUROC curve for CCI was significantly larger for patients aged < 65 years(p < 0.001) for both in-hospital and 1-year mortality. Conclusion: There were no differences in the clinical presentation of IE between the groups. Age ≥ 80 years, high comorbidity (measured by CCI),and non-performance of surgery were independent predictors of mortality in patients with IE.CCI could help to identify those patients with IE and surgical indication who present a lower risk of in-hospital and 1-year mortality after surgery, especially in the < 65-year group.
L-amB induction treatment improves survival in patients with PVE-C. Medical treatment followed by long-term maintenance fluconazole may be the best treatment option for frail patients.
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