Efeito de doses de adubo 4-14-8 na competição entre tomateiro e Solanum americanum em convivência intra e interespecífica

O tomateiro (Lycopersicum esculentum) é uma das mais importantes hortaliças produzidas no mundo, porém sua produtividade pode ser reduzida em função da convivência com Solanum americanum (maria-pretinha). O objetivo desta pesquisa foi avaliar o efeito da adubação na relação de interferência intra e interespecífica entre plantas de tomateiro e S. americanum. Duas plantas em condições de convivência intra e interespecífica, por espécie, foram plantadas em vasos e adubadas com 13, 18 e 24 g de 4-14-8 por vaso, sendo avaliadas características de crescimento de ambas as espécies aos 90 dias após o transplante das plantas. A adubação com 4-14-8 estimulou o desenvolvimento da área foliar e da massa seca de caules, folhas e frutos de S. americanum, além da área foliar e da massa seca de folhas e frutos do tomateiro. A convivência interespecífica proporcionou maior altura de plantas de S. americanum, bem como menor altura e massa seca de folhas e frutos do tomateiro. Houve interação dos fatores adubação e convivência somente para o tomateiro, sendo a altura e a massa seca de folhas da cultura influenciadas negativamente quando submetidas às maiores doses de adubo e à competição com S. americanum.

Occurrence of Akodon cursor (Rodentia, Cricetidae) with 14, 15 and 16 chromosome cytotypes in the same geographic area in Southern Brazil

The karyotype of Akodon cursor (initially identified as A. arviculoides) had been reported with chromosomal numbers 14 and 15 in the South and Southeast and 16 in Northeastern Brazil. We found the three cytotypes in a region of Southern Brazil. The G-band patterns of these specimens were the same as those from southeastern and northeastern regions. Seventeen different combinations of chromosomes due to a complex rearrangement in pair 1 and pericentric inversions in pairs 2 and 3 were identified. Seven of these combinations are new to in the literature.

Bone mineral density of the lumbar spine of Brazilian children and adolescents aged 6 to 14 years

The authors performed a study of bone mass in eutrophic Brazilian children and adolescents using dual-energy X-ray absorptiometry (DXA) in order to obtain curves for bone mineral content (BMC) and bone mineral density (BMD) by chronological age and correlate these values with weight and height. Healthy Caucasian children and adolescents, 120 boys and 135 girls, 6 to 14 years of age, residents of São Paulo, Brazil, were selected from the Pediatric Department outpatient clinic of Hospital São Paulo (Universidade Federal de São Paulo). BMC, BMD and the area of the vertebral body of the L2-L4 segment were obtained by DXA. BMC and BMD for the lumbar spine (L2-L4) presented a progressive increase between 6 and 14 years of age in both sexes, with a distribution that fitted an exponential curve. We identified an increase of mineral content in female patients older than 11 years which was maintained until 13 years of age, when a new decrease in the velocity of bone mineralization occurred. Male patients presented a period of accelerated bone mass gain after 11 years of age that was maintained until 14 years of age. At 14 years of age the mean BMD values for boys and girls were 0.984 and 1.017 g/cm², respectively. A stepwise multiple regression analysis of paired variables showed that the "vertebral area-age" pair was the most significant in the determination of BMD values and the introduction of a third variable (weight or height) did not significantly increase the correlation coefficient.

14-3-3 proteins in apoptosis

The once obscure members of the 14-3-3 protein family play significant roles in the determination of cell fate. By inhibiting the pro-apoptotic BAD (Bcl-2-antagonist of cell death) and the transcription factor FKHRL-1, 14-3-3 displays important anti-apoptotic characteristics. To date, five points of interaction of 14-3-3 with the apoptotic machinery have been identified. How these interactions are regulated still remains a mystery.

Meditationes sancti evangelii 14

Invokaatio: Deo duce.

Meditationes sanctarum epistolarum 14

Arkit: A-B4.

Historia Bibliothecae Regiae Academiae Aboensis 14

Invokaatio: D.A.G.

De bibliothecariis Academiae Aboënsis 14

Arkit: 1 arkintunnukseton lehti, S4.

Artificium Delilae mysticum 14

Invokaatio: In nomine Jesu!

De cognitione Dei et Christi usum rationis supponente, locos Joh. XVII:3. & I Cor. II:14. illustratura

Invokaatio: D.D.

Lytrodoxia Jesu 14

Variantti B.

Transplantation of muscle-derived stem cells plus biodegradable fibrin glue restores the urethral sphincter in a pudendal nerve-transected rat model

We investigated whether fibrin glue (FG) could promote urethral sphincter restoration in muscle-derived stem cell (MDSC)-based injection therapies in a pudendal nerve-transected (PNT) rat, which was used as a stress urinary incontinence (SUI) model. MDSCs were purified from the gastrocnemius muscles of 4-week-old inbred female SPF Wistar rats and labeled with green fluorescent protein. Animals were divided into five groups (N = 15): sham (S), PNT (D), PNT+FG injection (F), PNT+MDSC injection (M), and PNT+MDSC+FG injection (FM). Each group was subdivided into 1- and 4-week groups. One and 4 weeks after injection into the proximal urethra, leak point pressure (LPP) was measured to assess urethral resistance function. Histology and immunohistochemistry were performed 4 weeks after injection. LPP was increased significantly in FM and M animals after implantation compared to group D (P < 0.01), but was not different from group S. LPP was slightly higher in the FM group than in the M group but there was no significant difference between them at different times. Histological and immunohistochemical examination demonstrated increased numbers of surviving MDSCs (109 ± 19 vs 82 ± 11/hpf, P = 0.026), increased muscle/collagen ratio (0.40 ± 0.02 vs 0.34 ± 0.02, P = 0.044), as well as increased microvessel density (16.9 ± 0.6 vs 14.1 ± 0.4/hpf, P = 0.001) at the injection sites in FM compared to M animals. Fibrin glue may potentially improve the action of transplanted MDSCs to restore the histology and function of the urethral sphincter in a SUI rat model. Injection of MDSCs with fibrin glue may provide a novel cellular therapy method for SUI.

Disquisitiones practicae 14

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