29 research outputs found

    Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

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    The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

    Early mortality in children and adolescents with acute promyelocytic leukemia: experience of the Boldrini children's center

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    Acute promyelocytic leukemia (APL) is currently considered a highly curable disease. However, an early death (ED) remains one of the main causes of APL treatment failure. In this retrospective study, we aimed to analyze the clinical characteristics of 91 children and adolescents with APL, who were consecutively registered at the (name of institution removed) Children’s Center from January 1, 1998 to December 31, 2017. Data were assessed for age, sex, ethnicity, body mass index percentile, initial white blood cell count, peripheral blood blast count, and platelet count, hemoglobin value, partial thromboplastin time, prothrombin time, fibrinogen level, serum creatinine level, APL morphology subtype (classic vs. hypogranular variant M3v), and FLT3 gene mutations. ED occurred in 12 of 91 (13.1%) patients and was mainly related to cerebral thromboembolism. Overall 66% of deaths occurred in the second week after diagnosis. ED was associated with white blood cell ≥10×109 cells/L (odds ratio of 8.44; 95% confidence interval [CI]=1.48-48.26; P=0.0016), initial promyelocytes ≥20×109/L (odds ratio of 9.29; 95% CI=2.45-35.8; P=0.001), morphologic subtype M3v (odds ratio of 3.63; 95% CI=1.04-12.64; P=0.043), and creatinine serum levels >0.7 mg/dL (odds ratio of 6.78; 95% CI=1.83-25.13; P=0.004). In multivariate analyses, ED was associated with initial peripheral promyelocytes ≥20×109 blasts/L and creatinine serum levels >0.7 mg/dL. EDs were mainly caused by thrombohemorrhagic events and occurred within the second week after diagnosis. High peripheral promyelocytes and creatinine levels were predictors of ED in APL427e641e64

    CaPrx, a Coffea arabica gene encoding a putative class III peroxidase induced by root-knot nematode infection

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    Class III peroxidases (Prxs) are enzymes involved in a multitude of physiological and stress-related processes in plants. Here, we report on the characterization of a putative peroxidase-encoding gene from Coffea arabica (CaPrx) that is expressed in early stages of root-knot nematode (RKN) infection. CaPrx showed enhanced expression in coffee roots inoculated with RKN (at 12 h post-inoculation), but no significant difference in expression was observed between susceptible and resistant plants. Assays using transgenic tobacco plants harboring a promoter-beta-glucuronidase (GUS) fusion revealed that the CaPrx promoter was exclusively active in the galls induced by RKN. In cross sections of galls, GUS staining was predominantly localized in giant cells. Up-regulation of GUS expression in roots of transgenic plants following RKN inoculation was observed within 16 h. Moreover, no increase in GUS expression after treatment with jasmonic acid was detected. Altogether, these results point to a putative role of this peroxidase in the general coffee response to RKN infection. (C) 2012 Elsevier B.V. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

    mRNA Expression Profile of Multidrug Resistance Genes in Childhood Acute Lymphoblastic Leukemia. Low Expression Levels Associated With a Higher Risk of Toxic Death

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    Background. Increased activity of multidrug resistance (MDR) genes has been associated with treatment failure in acute leukemias, although with controversial reports. The objective of the present study was to assess the expression profile of the genes related to MDR: ABCB1, ABCC1, ABCC3, ABCC2, and LRP/MVP in terms of the clinical and biological variable and the survival of children with acute lymphoblastic leukemia (ALL). Procedure. The levels of mRNA expression of the drug resistance genes ABCB1, ABCC1, ABCC3, ABCG2, and LRP/MVP were analyzed by quantitative real-time PCR using the median Values as cut-off points, in consecutive samples from 140 children with ALL at diagnosis. Results. Expression levels of the ABCG2 gene in the patient group as a whole (P=0.05) and of the ABCG2 and ABCC1 genes in patients classified as being at high risk were associated with higher rates of 5-year event-free survival (EFS) (P=0.04 and P=0.01). Expression levels of the ABCG2 gene below the median were associated with a greater chance of death related to treatment toxicity for the patient group as a whole (P=0.009) and expression levels below the median of the ABCG2 and ABCC1 genes were associated with a greater chance of death due to treatment toxicity for the high-risk group (P=0.02 and P=0.03, respectively). Conclusion. The present data suggest a low participation of the drug efflux genes in treatment failure in patients with childhood ALL. However, the low expression of some of these genes may be associated with a higher death risk related to treatment toxicity. Pediatr Blood Cancer 2009;53:996-1004. (C) 2009 Wiley-Liss, Inc.Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[2001/13206-9]Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[2002/03182-8]Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[2005/50731-5]FAEP

    Gene expression pattern contributing to prognostic factors in childhood acute lymphoblastic leukemia

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    The present study evaluated the expression profile of 19 genes previously reported in microarray studies and associated with resistance or sensitivity to vincristine (RPLP2, CD44, TCFL5, KCNN1, TRIM24), prednisolone (F8A, CDK2AP1, BLVRB, CD69), daunorubicin (MAP3K12, SHOC2, PCDH9, EGR1, KCNN4) and L-asparaginase (GPR56, MAN1A1, CLEC11A, IGFBP7, GATA3). We studied 140 bone marrow samples at diagnosis from children with acute lymphoblastic leukemia (ALL) treated according to the Brazilian Childhood Leukemia Treatment Group (GBTLI) ALL-99 protocol. the expression profiles of the genes listed above were analyzed by real-time quantitative polymerase chain reaction (PCR) and then related to the clinical and biological prognostic factors. the results showed significant associations (p <= 0.05) between the expression levels of genes GPR56, BLVRB, IGFBP7 and white blood cell (WBC) count at diagnosis; GATA3, MAN1A1, CD44, MAP3K12, CLEC11A, SHOC2 and CD10 B-lineage ALL; TCFL5 and bone marrow status at day 14; MAP3K12 and TRIM24 and bone marrow status at day 28; and CD69, TCFL5 and TRIM24 genes and ETV6/RUNX1 positive ALL. the up-regulation of SHOC2 was also associated with better 5-year event-free survival (EFS) in univariate and multivariate analysis (p = 0.02 and p = 0.03, respectively). These findings highlight genes that could be associated with clinical and biological prognostic factors in childhood ALL, suggesting that these genes may characterize and play a role in the treatment outcome of some ALL subsets.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)FAEPA (Brazil)Univ São Paulo, Fac Med Ribeirao Preto, Dept Pediat, BR-14049900 Ribeirao Preto, SP, BrazilUniv São Paulo, Fac Med Ribeirao Preto, Dept Genet, BR-14049900 Ribeirao Preto, SP, BrazilBoldrini Inst, Campinas, SP, BrazilUniversidade Federal de São Paulo, Inst Pediat Oncol, São Paulo, SP, BrazilUniv Estadual Campinas, Campinas, SP, BrazilUniversidade Federal de São Paulo, Inst Pediat Oncol, São Paulo, SP, BrazilFAPESP: 2001/13206-9FAPESP: 2002/03182-8FAPESP: 2005/50731-5Web of Scienc

    Low mRNA expression of the apoptosis-related genes CASP3, CASP8, and FAS is associated with low induction treatment response in childhood Acute Lymphoblastic Leukemia (ALL)

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    Defects in apoptosis signaling have been considered to be responsible for treatment failure in many types of cancer, although with controversial results. The objective of the present study was to assess the expression profile of key apoptosis-related genes in terms of clinical and biological variables and of the survival of children with acute lymphoblastic leukemia (ALL). Procedure. The levels of mRNA expression of the apoptosis-related genes CASP3, CASP8, CASP9, FAS, and BCL2 were analyzed by quantitative real-time PCR in consecutive samples from 139 consecutive children with ALL at diagnosis treated by the Brazilian protocol (GBTLI-ALL 99). Gene expression levels and clinical and biological features were compared by the Mann-Whitney test. Event-free survival (EFS) was calculated by Kaplan-Meier plots and log-rank test. A significant correlation was detected between CASP3, CASP8, CASP9, and FAS expression levels (P<0.01) in ALL samples. Higher levels of BCL2 were significantly associated with white blood cell (WBC) count <50,000/mm(3) at diagnosis (P=0.01) and low risk group classification (P=0.008). Lower expression levels of CASP3, CASP8 and FAS gene were associated with a poor response at day 7 according the GBTLI-ALL 99 protocol (P=0.03, P=0.02 and P=0.008, respectively). There was a relationship between FAS gene expression lower than the 75th percentile and lower 5-year EFS (P=0.02). These findings suggest an association between lower expression levels of the pro-apoptotic genes and a poor response to induction therapy at day 7 and prognosis in childhood ALL55110010

    A simplified minimal residual disease polymerase chain reaction method at early treatment points can stratify children with acute lymphoblastic leukemia into good and poor outcome groups

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    Background Minimal residual disease is an important independent prognostic factor in childhood acute lymphoblastic leukemia. The classical detection methods such as multiparameter flow cytometry and real-time quantitative polymerase chain reaction analysis are expensive, time-consuming and complex, and require considerable technical expertise. Design and Methods We analyzed 229 consecutive children with acute lymphoblastic leukemia treated according to the GBTLI-99 protocol at three different Brazilian centers. Minimal residual disease was analyzed in bone marrow samples at diagnosis and on days 14 and 28 by conventional homo/heteroduplex polymerase chain reaction using a simplified approach with consensus primers for IG and TCR gene rearrangements. Results At least one marker was detected by polymerase chain reaction in 96.4%, of the patients. By combining the minimal residual disease results obtained on days 14 and 28, three different prognostic groups were identified: minimal residual disease negative on days 14 and 28, positive on day 14/negative on day 28, and positive on both. Five-year event-free survival rates were 85%, 75.6%,, and 27.8%, respectively (p<0.0001). The same pattern of stratification held true for the group of intensively treated children. When analyzed in other subgroups of patients such as those at standard and high risk at diagnosis, those with positive B-derived CD10, patients positive for the TEL/AML1 transcript, and patients in morphological remission on a day 28 marrow, the event-free survival rate was found to be significantly lower in patients with positive minimal residual disease on day 28. Multivariate analysis demonstrated that the detection of minimal residual disease on day 28 is the most significant prognostic factor. Conclusions This simplified strategy for detection of minimal residual disease was feasible, reproducible, cheaper and simpler when compared with other methods, and allowed powerful discrimination between children with acute lymphoblastic leukemia with a good and poor outcome.Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[2005/02279-6

    mRNA expression profile of multidrug resistance genes in childhood acute lymphoblastic leukemia : low expression levels associated with a higher risk of toxic death

    No full text
    Increased activity of multidrug resistance (MDR) genes has been associated with treatment failure in acute leukemias, although with controversial reports. The objective of the present study was to assess the expression profile of the genes related to MDR: ABCB1, ABCC1, ABCC3, ABCG2, and LRP/MVP in terms of the clinical and biological variable and the survival of children with acute lymphoblastic leukemia (ALL). The levels of mRNA expression of the drug resistance genes ABCB1, ABCC1, ABCC3, ABCG2, and LRP/MVP were analyzed by quantitative real‐time PCR using the median values as cut‐off points, in consecutive samples from 140 children with ALL at diagnosis. Expression levels of the ABCG2 gene in the patient group as a whole (P = 0.05) and of the ABCG2 and ABCC1 genes in patients classified as being at high risk were associated with higher rates of 5‐year event‐free survival (EFS) (P = 0.04 and P = 0.01). Expression levels of the ABCG2 gene below the median were associated with a greater chance of death related to treatment toxicity for the patient group as a whole (P = 0.009) and expression levels below the median of the ABCG2 and ABCC1 genes were associated with a greater chance of death due to treatment toxicity for the high‐risk group (P = 0.02 and P = 0.03, respectively). The present data suggest a low participation of the drug efflux genes in treatment failure in patients with childhood ALL. However, the low expression of some of these genes may be associated with a higher death risk related to treatment toxicity. Pediatr Blood Cancer 2009;53:996–1004. © 2009 Wiley‐Liss, Inc5369961004FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP2001/13206‐9; 2002/03182‐8; 2005/50731‐
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