7%, with an increasing trend in younger patients (P = 0 0002 and

7%, with an increasing trend in younger patients (P = 0.0002 and <0.0001, respectively). Multiple clinical PR was 2.6% with 1.9% twins and 0.7% triplets

and above. The birthweight of a singleton from a vanishing twin pregnancy (n = 8) was significantly lower than other singletons click here (2882 g versus 3250 g, P = 0.013). Reducing multiple pregnancies from OI/OE cycles remains an important and challenging goal. In this large cohort, high-order multiple clinical PR was limited to 0.7% per cycle by using specific management strategies while maintaining a reasonable PR. (C) 2011, Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.”
“Aims: The present study investigated the role of the Rho-kinase (ROK) pathway in the maintenance of bladder tone during the storage phase, and its effects on bladder compliance. Methods: Muscle strips from isolated rat bladder (detrusor strips) were used to evaluate the effects of the ROK inhibitors Y-27632 and HA-1077 on resting tension, which is independent of G-protein coupled pathways. Stretch-induced ROK activation was assessed by measuring phosphorylation of MYPT1 (myosin phosphatase targeting subunit) using Western blotting. The effect of ROK inhibitors on bladder compliance during bladder filling was assessed in an in vitro whole bladder model. Results: Y-27632 and HA-1077 caused concentration-dependent relaxation of detrusor

strips. Stretch increased MYPT1-p[Thr853] levels by approximately 1.5-fold in normal Krebs buffer. The ROK inhibitor Y-27632

abolished the stretch-induced increase find more and reduced the level of MYPT1-p[Thr853] to <50% of the basal values in normal Krebs buffer. Stretch-induced phosphorylation of MYPT1 was independent of Ca2+ originating from either extracellular or intracellular stores. When tested in the isolated whole rat bladder model, HA-1077 significantly increased bladder compliance at both 3 and 10 mu M. Conclusions: This study demonstrates that the ROK pathway is constitutively active and stretch further activates the ROK pathway, which contributes to the generation of bladder tone, thereby affecting bladder compliance. Neurourol. Urodynam. Neurourol. Urodynam. 32: 1019-1025, 2013. (C) 2012 Wiley Periodicals, Inc.”
“The fine structure of the three OSI-744 germ layers in human ectopic embryos (stage 7) have been documented by digital light and electron microscopy. The formation of ectoderm, endoderm and mesoderm and notochordal cells, and also the extraembryonic membranes, amnion and yolk sac, are imaged. The germ layers give rise to all the cells and tissues of the human body. Possible clues to the early differentiation of embryonic stem cells (ESC) in vitro were obtained, since these events are more or less mimicked in cultures of ESC derived from the inner cell mass of human blastocysts. The findings are discussed with reference to previous studies on the fine structure of ESC using the same technique.

The curing property and thermal property of copolymer epoxy resin

The curing property and thermal property of copolymer epoxy resins were investigated. The results showed that copolymer epoxy resins could cure at room temperature after the hardener was added, and its curing process was an exothermic reaction. Comparison showed that copolymer epoxy resins prepared with phenol-liquefied bamboo as raw material had higher heat released than those prepared

with polyhydric alcohol-liquefied bamboo during curing. The DSC analysis showed that heat treatment could enhance the crosslinking of copolymer epoxy resins Cured at room temperature. However, resins prepared with polyhydric alcohol-liquefied bamboo had a lower glass transition temperature. The TGA analysis showed that resins prepared with phenol-liquefied bamboo had better thermal stability. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 116: 2065-2073, 2010″
“Small-angle neutron scattering HSP inhibitor review with polarization analysis reveals that Fe(3)O(4) nanoparticles with 90 angstrom diameters have ferrimagnetic moments significantly reduced from that of bulk Fe(3)O(4) at 10 K, nominal saturation. Combined with previous results for an equivalent applied field at 200 K, a core-disordered find more shell picture of a spatially reduced ferrimagnetic core emerges, even well below the bulk blocking temperature. Zero-field cooling suggests that this magnetic morphology may be intrinsic to the nanoparticle, rather than field induced, at

10 K. (C) 2010 American Institute of Physics. [doi:10.1063/1.3358049]“
“The EORTC QLQ-H&N35 (H&N35) is widely used to measure quality of life in head and neck cancer patients. The aims of this study were to obtain insight into a) the languages in which the H&N35 has been used and the psychometric properties in those languages, b) the study designs, and c) its acceptance by patients and investigators.

A systematic literature review was performed searching for all original papers that had used at least one item of the H&N35. Identified papers were read and the information about methodological issues abstracted statistically analysed.

A total of 136 papers

were identified. The H&N35 was administered in 19 different languages in 27 countries. The AZ 628 research buy study design was cross-sectional in the majority of studies (53 %), prospective cohort studies (31 %), phase-II-trials (7 %), phase-III-trials (6 %) and case-control studies (1 %). The scales with the highest percentages of missing values were Sexuality (11.5 %) and Speech (7 %). The median Cronbach’s alpha of the multi-item scales ranged from 0.61 (Senses) to 0.93 (Sexuality). Construct validity was rarely investigated. On average, 12 scales (range 0-18) of the instrument were used by the investigators. The scale most often used was swallowing (in 85 % of studies) and least often used was Weight Gain (39 %).

The H&N35 is widely used throughout the world, mainly in observational studies, and has demonstrated robust psychometric features in different languages.

040)

Conclusion: In conclusion, MSG induced mechanica

040).

Conclusion: In conclusion, MSG induced mechanical sensitization in masseter muscle and adverse effects such

as headache and short-lasting JNK inhibitor blood pressure elevation for which tolerance did not develop over 5 days of MSG intake.”
“Background: Host-seeking of the African malaria mosquito, Anopheles gambiae sensu stricto, is guided by human odours. The precise nature of the odours, and the composition of attractive blends of volatiles, remains largely unknown. Skin microbiota plays an important role in the production of human body odours. It is hypothesized that host attractiveness and selection of An. gambiae is affected by the species composition, density, and metabolic activity of the skin microbiota. A study is presented in which the production and constituency of volatile organic compounds

(VOCs) by human skin microbiota is examined and the behavioural responses of An. gambiae to VOCs from skin microbiota are investigated.

Methods: Blood agar plates incubated with skin microbiota from human feet or with a reference strain of Staphylococcus epidermidis were tested for their attractiveness to An. gambiae in olfactometer bioassays and indoor trapping experiments. Entrained air collected from blood agar plates incubated with natural skin microbiota or with S. epidermidis were analysed using GC-MS. A synthetic blend of the compounds identified was tested for its attractiveness to An. gambiae. Behavioural Akt inhibitor data were analysed by a chi(2)-test and GLM. GC-MS results were analysed by fitting an exponential regression line to test the effect of the concentration of bacteria.

Results: More An. gambiae were caught with blood agar plates

incubated with skin bacteria than with sterile blood agar plates, with a significant effect of incubation time and dilution of the skin microbiota. When bacteria from the feet of four other volunteers were tested, similar effects were found. Temsirolimus order Fourteen putative attractants were found in the headspace of the skin bacteria. A synthetic blend of 10 of these was attractive to An. gambiae.

Conclusions: The discovery that volatiles produced by human skin microorganisms in vitro mediate An. gambiae host-seeking behaviour creates new opportunities for the development of odour-baited trapping systems. Additionally, identification of bacterial volatiles provides a new method to develop synthetic blends, attractive to An. gambiae and possibly other anthropophilic disease vectors.”
“Sunlight irradiation reaction of Ru(3)(CO)(12) with a Schiff base, bis (acetyl acetone) ethylene diimine, acacenH(2), in benzene results in the formation of an octahedral complex [Ru(CO)(2)(acacen)] with a tetradentate ligand. The complex was structurally confirmed using elemental analysis, infrared, mass spectrometry, (1)HNMR, UV-vis absorption spectra, and magnetic measurements.

However, the biological functions of HDAC1 in supporting the grow

However, the biological functions of HDAC1 in supporting the growth and development of bovine oocytes and embryos are still not fully elucidates. In this study, three siRNAs (si299, si672, and si1272) targeting to HDAC1 mRNA sequence were designed. After transfection into bovine fibroblast cells, si299, the most effective one in HDAC1 knock-down, was selected.

The selected siRNA was microinjected into bovine germinal vesicle (GV) stage oocytes to determine the functions of HDAC1 in the maturation of bovine oocytes. Finally, the siRNA was microinjected into mature oocytes, which were then parthenogenetically activated and cultured in vitro until the blastocyst stage. The rates of cleavage, blastocyst development and acetylation of lysine 14 of H3 (H3K14) state were checked. The results suggest that HDAC1 knock-down in oocytes did not influence the rates of maturation or cleavage of parthenogenetic embryos. However, the rates of blastocyst Elacridar price decreased after siRNA microinjection. Furthermore, histone H3K14 acetylation level increased after siRNA microinjection into parthenogenetic embryos.”
“Purpose: The aims of this study were to evaluate the normal range of the dimensions of lacrimal glands in the healthy orbits of Korean subjects and to evaluate their association with clinical findings.

Methods: A retrospective survey of patients who had visited the Korea University Medical Center and had undergone

orbital computed tomographic Selleck FK506 scan was performed. One hundred eighty Korean patients (90 men and

90 women) who were older than 20 years and without orbital disease were included. Patients with trauma to the orbits or any known lacrimal gland disease were excluded. The length GSK1838705A Protein Tyrosine Kinase inhibitor and width of the lacrimal gland were measured in axial and coronal sections using the largest image. The primary outcome was a descriptive analysis of the distribution of dimensions in normal orbits. We analyzed the results and identified associations with age, sex, and laterality and compared our results with a previous study on normal white lacrimal gland dimensions.

Results: The mean lacrimal gland axial length was 14.9 mm in the right orbit and 14.7 mm in left orbit. Coronal lengths averaged 20.9 mm in the right orbit and 20.7 mm in the left orbit. The axial width was 4.1 mm in the right orbit and 4.3 mm in the left orbit. The coronal width averaged 3.6 mm in the right orbit and 3.8 mm in the left orbit. A significant inverse linear relationship was observed in both orbits between gland size and age in all dimensions, with the exception of axial width.

Conclusions: This study presents a normal range of Korean lacrimal gland dimensions as measured by computed tomography. This range can aid in differentiating diseased and nondiseased lacrimal glands, especially when used in combination with physical examination. These data may also be useful in clinical trials that involve lacrimal gland size.


“A 7-day-old male with tricuspid atresia, pulmonary atresi


“A 7-day-old male with tricuspid atresia, pulmonary atresia, and D-transposition of the great vessels underwent surgical placement of a modified Blalock-Taussig (mBT) shunt and was found to have a pseudoaneurysm on the follow-up echocardiogram. Surgical exploration selleck chemical identified

a pseudoaneurysm arising from the right subclavian artery and not from the innominate artery at the site of the mBT shunt. It was concluded that this was caused by an inadvertent needlestick during central line placement. The fistula tract between the right subclavian artery and the false aneurysm was oversewn, and the postoperative course was unremarkable.”
“In this study, shrimp shell powder, prepared by treating shrimp-processing waste by boiling and crushing, was used as a substrate for isolation of chitinase-producing microorganism. These

organisms may have an important economic role in the biological control of rice and other fungal pathogens. Two hundred strains of bacteria with the ability to degrade chitin from shrimp shell waste were isolated from paddy soil, and of these, 40 strains showed chitinase activity in a solid state cultivation. One find more of the most potent isolates (strain R 176) was identified as Bacillus thuringiensis. Identification was carried out using morphological and biochemical properties along with 16S rRNA sequence analysis. This strain was able to produce high levels of extracellular chitinase in solid media containing shrimp shells as sole carbon source [1.36 U/g initial dry substrate (IDS)], which was MK5108 solubility dmso 0.36-fold higher than the productivity in a

liquid culture with colloidal chitin. The effects of medium composition and physical parameters on chitinase production by this organism were studied. The optimal medium contained shrimp shell mixed with rice straw in 1:1 ratio added with ball-milled chitin 0.5 % (w/v) and ammonium sulfate 0.5 % (w/v). The highest enzyme production (3.86 U/g IDS) by B. thuringiensis R 176 was obtained at pH 7, 37 A degrees C after 14 days growth. With respect to the high amount of chitinase production by this strain in a simple medium, this strain could be a suitable candidate for the production of chitinase from chitinous solid substrates, and further investigations into its structure and characteristics are merited.”
“Background: Inadequate antifactor Xa levels have been documented in critically ill patients given prophylactic enoxaparin and may result in increased risk of venous thromboembolic (VTE) events. The objective of this study was to examine the impact of dose adjustment of enoxaparin and associated incidence of VTE in acute burn patients.

Methods: All acute burn patients who were treated with prophylactic enoxaparin on a burn/trauma intensive care unit were prospectively followed.

09 chains/nm(2) by thermogravimetric analysis The P4VP-grafted m

09 chains/nm(2) by thermogravimetric analysis. The P4VP-grafted magnetite particles exhibited the characteristics of multidomain system, distinct from the single domain attributes of the pure magnetite particles. Atomic force-microscopy analysis revealed the diameter of the grafted P4VP magnetic latex particles is in the range of 120 nm to 150 nm. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 3582-3590, 2011″
“Malaria mosquito research in Africa as elsewhere is just over a century old. Early trials for development of mosquito control tools were driven by colonial enterprises and war efforts; they were, therefore, tested in military or colonial settings. The failure of those tools

and environmental concerns, coupled with the desperate need for integrated malaria control strategies, has necessitated the development of new malaria mosquito

control see more tools, which are to be tested on humans, their environment and mosquito habitats. Ethical concerns start with phase 2 trials, which pose limited ethical dilemmas. Phase 3 trials, which are undertaken on vulnerable civilian populations, pose ethical dilemmas ranging from individual to community concerns. It is argued that such trials must abide by established ethical principles especially Vorinostat nmr safety, which is mainly enshrined in the principle of non-maleficence. As there is total lack of experience with many of the promising candidate tools Z-DEVD-FMK price (eg genetically modified mosquitoes, entomopathogenic fungi, and biocontrol agents), great caution must be exercised before they are introduced in the field. Since malaria vector trials, especially phase 3 are intrusive and in large populations, individual and community respect is mandatory, and must give great priority to community engagement. It is concluded that new tools must be safe, beneficial, efficacious, effective, and acceptable to large populations in the short and long-term, and that research benefits should be equitably distributed to all who bear the brunt

of the research burdens. It is further concluded that individual and institutional capacity strengthening should be provided, in order to undertake essential research, carry out scientific and ethical review, and establish competent regulatory frameworks.”
“Many accessions (ecotypes) of Arabidopsis have been collected. Although few differences exist among their nucleotide sequences, these subtle differences induce large genetic variation in phenotypic traits such as stress tolerance and flowering time. To understand the natural variability in salt tolerance, large-scale soil pot experiments were performed to evaluate salt tolerance among 350 Arabidopsis thaliana accessions. The evaluation revealed a wide variation in the salt tolerance among accessions. Several accessions, including Bu-5, Bur-0, Ll-1, Wl-0, and Zu-0, exhibited marked stress tolerance compared with a salt-sensitive experimental accession, Col-0.


“A 75-year-old man who had undergone left upper lobectomy


“A 75-year-old man who had undergone left upper lobectomy of the lung exhibited fever and insomnia on postoperative day (POD) 1 and muscle rigidity, autonomic instability,

and somnolence on POD2 after epidural administration of droperidol and withdrawal of oral etizolam. He had not been known to have any neuromuscular diseases or psychiatric diseases, with the exception of anxiety disorder. Brain computed tomography did not show cerebrovascular disorders. Consultation with a neurologist led to a suspicion of neuroleptic malignant syndrome (NMS). Epidural droperidol was stopped and administration of dantrolene was initiated. These measures, in addition to supportive care, only partially ameliorated the symptoms of the patient, and consciousness disturbance developed; the patient finally became comatose on POD3. However, intravenous diazepam (10 mg) improved his symptoms abruptly. Subsequently, oral CYT387 manufacturer administration of lorazepam (1 mg/day) was started, and his symptoms disappeared within 2 days (POD5). Although learn more NMS-like symptoms are rarely seen in clinical practice, some factors may induce it during the perioperative period, such as the administration of dopamine antagonists and the cessation of benzodiazepines.

Intravenous diazepam is an effective treatment in cases with suspected gamma-aminobutyric acid (GABA) hypoactivity at the GABA(A) receptor induced by the cessation of benzodiazepines.”
“Recent improvements in nuclear magnetic resonance (NMR) – automation, sensitivity, resolution, pulse-sequence design and spectral processing – are giving novel insights into a wide range of biotech drugs. Real-world applications and emerging trends in biopharmaceutical NMR are being used to help in discovery, design, and characterization of these drugs and to improve assessment of their efficacy, quality selleck and similarity. (C) 2013 Elsevier Ltd. All rights reserved.”
“Normal functioning of the urinary bladder and the distal gut is an essential part of daily physiological activity coordinated by the peripheral and central nervous systems. Pathological changes in one of these organs may induce the development of cross-organ sensitization

in the pelvis and underlie clinical co-morbidity of genitourinary and GI dysfunctions. Experimental human and animal data suggest that the bladder and distal colon interact under both normal and pathological conditions, however, the directions of these interactions can change dramatically depending on the nature and duration of the applied stimuli. This review article aimed to summarize the clinical data on colonbladder cross-reflexes in healthy individuals, as well as in patients with co-morbid disorders. It also discusses currently used animal models, experimental approaches, and suggested mechanisms of colonbladder cross-talk. Additionally, it provides an overview of the potential pharmacological targets to develop treatment options for patients with co-morbid disorders.

The detection of QD-labelled infected erythrocytes by flow cytome

The detection of QD-labelled infected erythrocytes by flow cytometry was sensitive enough to monitor chloroquine anti-malarial toxicity with a drug incubation period

as short as 24 h (EC(50) = 113nM). A comparison of our assay with another widely used anti-malarial drug screening assay, the pLDH assay, showed that PCQD-based assay had 50% improved sensitivity in detecting drug efficacy within a parasite life cycle. An excellent Z-factor of 0.8 shows that the QD assay is suitable for high-throughput screening.

Conclusions: This new assay can offer a rapid and robust platform to screen novel selleck chemical classes of anti-malarial drugs.”
“Glycidyl methacrylate functionalized acrylonitrile-butadiene-styrene (ABS-g-GMA) particles were prepared and used to toughen polylactide (PLA). The characteristic absorption at 1728 cm(-1) of the Fourier transform infrared spectra indicated that glycidyl methacrylate (GMA) was grafted onto the polybutadiene phase of acrylonitrile-butadiene-styrene (ABS). Chemical reactions analysis indicated that compatibilization and crosslinking reactions took place simultaneously between the epoxy groups of ABS-g-GMA and the end carboxyl or hydroxyl groups of PLA and that the increase of GMA selleck screening library content improved the reaction degree.

Scanning electron microscopy results showed that 1 wt % GMA was sufficient to satisfy the compatibilization and that ABS-g-GMA particles with 1 wt % GMA dispersed in PLA uniformly. A further increase of GMA content induced the agglomeration of ABS-g-GMA

particles because of crosslinking reactions. Dynamic mechanical analysis testing showed that the miscibility between PLA and ABS improved with the introduction of GMA onto ABS particles because of compatibilization reactions. The storage modulus decreased for the PLA blends with increasing GMA content. The decrease in the storage modulus was due to the www.selleckchem.com/products/lcl161.html chemical reactions in the PLA/ABS-g-GMA blends, which improved the viscosity and decreased the crystallization of PLA. A notched impact strength of 540 J/m was achieved for the PLA/ABS-g-GMA blend with 1 wt % GMA, which was 27 times than the impact strength of pure PLA, and a further increase in the GMA content in the ABS-g-GMA particles was not beneficial to the toughness improvement. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122:2992-2999, 2011″
“PURPOSE: To determine the possible effect of corneal collagen crosslinking (CXL) with riboflavin and ultraviolet A (UVA) on intraocular pressure (IOP) measurements by Goldmann applanation tonometry (GAT).

SETTING: Institute of Vision and Optics, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece.

DESIGN: Prospective case series.

METHODS: This noncomparative study measured IOP by GAT before CXL and 6 months and 12 months after CXL.

RESULTS: The study evaluated 55 eyes (55 patients).

No statistically significant differences were observed between Gr

No statistically significant differences were observed between Groups 1 and 2. These findings seem to support the idea that microvascular decompression is not a dangerous surgical procedure in patients over the age of 65 years.”
“Amino polysiloxanes (APSs) with different amino values and amino types were synthesized and applied to cotton fabrics. Softening and smoothening properties of the fabrics treated with APSs were investigated and evaluated by measuring wrinkle recovery angles and friction coefficients, and the morphological

features of the APSs adsorbed onto cellulose substrate films were characterized by atomic force microscope (AFM). The results indicate Nepicastat inhibitor that the amino values and amino types of the APSs have a significant impact on the softening and smoothening properties of the fabrics. APSs with relatively high amino values exhibit superior smoothening property, while APSs with moderate ATM/ATR inhibitor drugs amino values exhibit excel-lent softening property. Compared to the traditional softener

N-beta-aminoethyl-gamma-aminopropyl polydimethylsiloxane (APS-1), the new amino type softeners c-piperazinylpropyl polydimethylsiloxane (APS-2) and N-gamma-dimethylamino-propyl-gamma-aminopropyl polydimethylsiloxane (APS-3) gave better fabric performance, whereas aminopropyl polydimethylsiloxane (APS-4) and N-cyclohexyl-gamma-aminopropyl polydimethylsiloxane (APS-5) gave unsatisfactory fabric performance. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 2326-2333, 2011″
“As all-printed digital circuits are in high demand to produce all-printed active devices, providing accurate and synchronized clocks to all of the printed circuits is an indispensible step. To supply the clock signal to a printed digital circuit, a printed ring oscillator has been considered as a practical SNS-032 ic50 solution. However, it is difficult to fully print the ring oscillators with a consistent and stable clock

signal. To resolve this problem, we employed single walled carbon nanotube network (SWNTn) as active layers of printed thin film transistors (TFTs) to completely print the ring oscillator. In addition, using the extracted electronic properties from the printed SWNTn-TFTs, we designed a simulation model based on AIM-Spice Model 15 for the printed ring oscillator and compared the simulated clock signals with the experimentally measured values of the printed ring oscillator. (C) 2010 American Institute of Physics. [doi:10.1063/1.3511698]“
“The personal diary of Sir Augustus d’Est,, born 1794 grandson of King George III of England, reveals a medical history strongly suggesting that Augustus suffered from multiple sclerosis (MS). It could well be the first record of a person having this disease. Charcot coined the term scl,rose en plaques 20 years after the death of this patient in 1848.

The percentage of subjects with long QT intervals was 0 02%, but

The percentage of subjects with long QT intervals was 0.02%, but there were no arrhythmias on the treadmill test or Holter monitoring.

Conclusions: The prevalence of a Brugada ECG pattern BIX01294 in apparently healthy young men is higher in Korea than other countries. (PACE 2011; 1-7).”
“Glucose-6-phosphate dehydrogenase (G6PD) deficiency can lead to acute hemolytic anemia, chronic nonspherocytic hemolytic anemia, and neonatal jaundice. Neonatal red cell pyruvate kinase (PK) deficiency may cause clinical patterns, ranging from extremely severe hemolytic anemia to moderate jaundice. The authors aimed at studying

the prevalence of G6PD and PK deficiency among Egyptian neonates with pathological indirect hyperbilirubinemia in Cairo. This case-series study included 69 newborns with unconjugated hyperbilirubinemia. All were subjected to clinical history, laboratory investigations, e.g., complete blood counts, reticulocytic counts, direct and indirect serum bilirubin levels, Coombs tests, qualitative assay of G6PD activity by methemoglobin reduction test, and measurement of erythrocytic PK levels. The study detected 10 neonates with G6PD deficiency, which means that

the prevalence of G6PD deficiency among Egyptian neonates with hyperbilirubinemia is 14.4% (21.2% of males). G6PD deficiency was significantly higher in males than females (P = .01). The authors detected 2 cases with PK deficiency, making

the prevalence of its deficiency 2.8%. These data demonstrate that G6PD deficiency is an important cause for selleck products neonatal jaundice GW786034 price in Egyptians. Neonatal screening for its deficiency is recommended. PK deficiency is not a common cause of neonatal jaundice. However, this needs further investigation on a larger scale.</.”
“P>Phytohormonal interactions are essential to regulate plant organogenesis. In response to the presence of signals from symbiotic bacteria, the Nod factors, legume roots generate a new organ: the nitrogen-fixing nodule. Analysis of mutants in the Medicago truncatula CRE1 cytokinin receptor and of the MtRR4 cytokinin primary response gene expression pattern revealed that cytokinin acts in initial cortical cell divisions and later in the transition between meristematic and differentiation zones of the mature nodule. MtCRE1 signaling is required for activation of the downstream nodulation-related transcription factors MtERN1, MtNSP2 and MtNIN, as well as to regulate expression and accumulation of PIN auxin efflux carriers. Whereas the MtCRE1 pathway is required to allow the inhibition of polar auxin transport in response to rhizobia, nodulation is still negatively regulated by the MtEIN2/SICKLE-dependent ethylene pathway in cre1 mutants. Hence, MtCRE1 signaling acts as a regulatory knob, integrating positive plant and bacterial cues to control legume nodule organogenesis.