multivariate analysis
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2022 ◽  
Vol 178 ◽  
pp. 106088
Alberto Mannu ◽  
Matteo Poddighe ◽  
Sebastiano Garroni ◽  
Luca Malfatti

2023 ◽  
Vol 83 ◽  
B. Ansari ◽  
J. Altafa ◽  
A. Ramzan ◽  
Z. Ahmed ◽  
S. Khalil ◽  

Abstract Physids belong to Class Gastropoda; belong to Phylum Mollusca and being bioindicators, intermediate hosts of parasites and pests hold a key position in the ecosystem. There are three species of Genus Physa i.e. P. fontinalis, Physa acuta and P. gyrina water bodies of Central Punjab and were characterized on the basis of molecular markers High level of genetic diversity was revealed by polymorphic RAPD, however SSR markers were not amplified. The multivariate analysis revealed polymorphism ranging from 9.09 percent to 50 percent among the three Physid species. Total number of 79 loci were observed for the three species under study and 24 loci were observed to be polymorphic. These RAPD fragment(s) can be developed into co dominant markers (SCAR) by cloning and can be further sequenced for the development of the Physa species specific markers to identify the introduced and native species in Pakistan.

2022 ◽  
Vol 146 ◽  
pp. 653-661
R.S. Pan ◽  
Reshma Shinde ◽  
Pradip Kumar Sarkar ◽  
Tania Seth ◽  
Anuradha Srivastava ◽  

Yu. T. Platov ◽  
D. A. Metlenkin ◽  
R. A. Platova ◽  
V. A. Rassulov ◽  
A. I. Vereshchagin ◽  

Plants ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 198
Dragana Stojičić ◽  
Svetlana Tošić ◽  
Gordana Stojanović ◽  
Bojan Zlatković ◽  
Snežana Jovanović ◽  

Clinopodium pulegium (Rochel) Bräuchler (Lamiaceae) is an endangered species endemic to the Southern Carpathians. It is characterized by the production of high amounts of essential oils, which emit volatile organic compounds (VOCs) that have an essential role in biotic and abiotic stress responses and in plant–plant and plant–insect interactions. The present study was initiated to phytochemically examine the influence of different carbon sources in the nutrition medium on VOC emissions of micropropagated C. pulegium plants, using gas chromatography–mass spectrometry analysis of headspace VOCs. The volatile profiles were subjected to multivariate analysis with respect to the presence, concentration and type of carbon source in the nutrient medium. In addition, the effect of different carbohydrates on the density and size of the leaf glandular trichomes, the main structures involved in the emission of VOCs, was determined. A total of 19 VOCs, primarily belonging to mono- and sesquiterpenes previously described in plants, were tentatively identified. Six VOCs were produced at levels higher than 2% of the total VOC emission, dominated by pulegone, ß-pinene and menthone. Inclusion of the carbohydrates in the culture media affected the production of the main leaf trichome-associated volatile allelochemicals although the qualitative composition of the volatiles changed only slightly. Multivariate analysis showed that the concentration, rather than the carbohydrate type, influenced the VOC profile.

2022 ◽  
Bo-Wen Zheng ◽  
Bo-Yv Zheng ◽  
Hua-Qing Niu ◽  
Xiao-Bin Wang ◽  
Guo-Hua Lv ◽  

Abstract Background The clinical characteristics and prognostic factors of axial chondroblastoma (ACB) are still poorly understood. Purpose To characterize clinicopathological characteristics in a large ACB cohort and investigate their correlation with survival. We also sought to compare these results with extra-axial CB (EACB). Methods Our institution's local database was retrospectively reviewed and included a total of 132 CB patients, including 61 ACB patients and 71 EACB patients. Immunohistochemistry was used to assess the expression levels of Vimentin (Vim), S100, and cytokeratin (CK) on tumor cells in 132 tissue specimens. Results Overall, ACB and EACB had similar characteristics, except for older age and tumor size, as well as higher Vim expression, incidence of surrounding tissue invasion and postoperative sensory or motor dysfunction. Whereas wide resection and absence of invasion of surrounding tissues were consistently associated with favorable survival in the ACB and EACB cohorts in univariate analysis, most parameters showed differential prognostic significance between the 2 groups. Significant prognostic factors for local recurrence-free survival in multivariate analysis included the type of resection and chicken-wire calcification in the ACB cohort. Multivariate analysis of overall survival demonstrated that the type of resection was a significant predictor in the ACB cohort, whereas the type of resection and postoperative sensory or motor dysfunction were predictive of overall survival in the EACB group. Conclusion These data suggest that there may be distinct biological behaviors between ACB and EACB and may provide useful information to better understand the prognostic characteristics of patients with ACB and to improve outcome prediction in patients with ACB.

PLoS ONE ◽  
2022 ◽  
Vol 17 (1) ◽  
pp. e0262113
Hon-Fan Lai ◽  
Ivy Yenwen Chau ◽  
Hao-Jan Lei ◽  
Shu-Cheng Chou ◽  
Cheng-Yuan Hsia ◽  

Purpose To evaluate the incidence and risk factors of postoperative fever (POF) after liver resection. In patients with POF, predictors of febrile infectious complications were determined. Methods A total of 797 consecutive patients undergoing liver resection from January 2015 to December 2019 were retrospectively investigated. POF was defined as body temperature ≥ 38.0°C in the postoperative period. POF was characterized by time of first fever, the highest temperature, and frequency of fever. The Institut Mutualiste Montsouris (IMM) classification was used to stratify surgical difficulty, from grade I (low), grade II (intermediate) to grade III (high). Postoperative leukocytosis was defined as a 70% increase of white blood cell count from the preoperative value. Multivariate analysis was performed to identify risk factors for POF and predictors of febrile infectious complications. Results Overall, 401 patients (50.3%) developed POF. Of these, 10.5% had the time of first fever > postoperative day (POD) 2, 25.9% had fever > 38.6°C, and 60.6% had multiple fever spikes. In multivariate analysis, risk factors for POF were: IMM grade III resection (OR 1.572, p = 0.008), Charlson Comorbidity Index score > 3 (OR 1.872, p < 0.001), and serum albumin < 3.2 g/dL (OR 3.236, p = 0.023). 14.6% patients developed infectious complication, 21.9% of febrile patients and 7.1% of afebrile patients (p < 0.001). Predictors of febrile infectious complications were: fever > 38.6°C (OR 2.242, p = 0.003), time of first fever > POD2 (OR 6.002, p < 0.001), and multiple fever spikes (OR 2.039, p = 0.019). Sensitivity, specificity, positive predictive value and negative predictive value for fever > 38.6°C were 39.8%, 78.0%, 33.7% and 82.2%, respectively. A combination of fever > 38.6°C and leukocytosis provided high specificity of 95.2%. Conclusion In this study, we found that IMM classification, CCI score, and serum albumin level related with POF development in patients undergone liver resection. Time of first fever > POD2, fever > 38.6°C, and multiple fever spikes indicate an increased risk of febrile infectious complication. These findings may aid decision-making in patients with POF who require further diagnostic workup.

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