All rights reserved “
“A sustained virological response is n

All rights reserved.”
“A sustained virological response is not achieved by a significant proportion of chronic hepatitis C patients treated with interferon-based regimens. Due to the associated side effects and high costs, therapy response markers have been thoroughly sought. Two Single Nucleotide Polymorphisms (SNPs), rs12979860 and rs8099917, which are located

upstream from https://www.selleckchem.com/products/AZD1480.html the IL28B gene, have been remarkably described to have a strong association with treatment efficacy. The aim of this study was to develop a straightforward method for genotyping such polymorphisms. A Polymerase Chain Reaction (PCR) followed by enzymatic restriction of amplicons was established for SNPs genotyping. Online computation resources were employed for retrieving reference sequences, such as the selection of oligonucleotides and restriction enzymes. Two pairs of primers

were designed and validated for the amplification of segments encompassing rs12979860 (694 bp) and rs8099917 (496 bp) with common thermocycling parameters. The endonucleases Hpy166II and BsrDI were selected and used for allelic discrimination GSK923295 solubility dmso related to rs12979860 (C/T) and rs8099917 (T/G), respectively. The expected electropherotypes were confirmed for all possible genotypes in 75 blood samples. In addition, the results were validated by sequencing. The method constitutes a simple and reliable assay, which may be readily available for genotyping of rs12979860 and rs8099917 in laboratories that support hepatitis C treatment centers. MTMR9 (C) 2012 Elsevier B.V. All rights reserved.”
“Melatonin follows a circadian rhythm entrained by the light/dark

cycle and plays a role in promoting light sensitivity at night. It has been suggested that melatonin and dopamine reciprocal inhibition may contribute to the switch between day and night vision. The purpose of this study was to investigate the impact of a high dose of melatonin administration on the photopic and scotopic electroretinogram (ERG) of dogs in the daytime, when it is not thought to be present. Photopic and scotopic ERG luminance response functions were obtained from 7 anaesthetized beagle dogs (3 males and 4 females), once without melatonin (control) and once after oral administration of melatonin (90 mg/dog). Vmax (maximal b-wave amplitude achieved) and logK (retinal sensitivity) were calculated from the derived luminance response function. Photopic flicker ERG was also recorded. In photopic condition, a-wave amplitude (control: 126.90 mu V; with melatonin: -49.64 mu V; p<0.001) and Vmax (control: 252.50 mu V; with melatonin: 115.40 mu V; p<0.001) were decreased. A significant reduction of the photopic flicker ERG amplitude was. observed after melatonin ingestion. In scotopic condition, an overall difference was reported before and after melatonin ingestion for the a- and b-wave amplitude, but no change was significant for Vmax.

18 (95% CI 1 13-1 23) per unit increase in prostate

speci

18 (95% CI 1.13-1.23) per unit increase in prostate

specific antigen. Including the interaction between alleles and prostate specific antigen significantly altered the risk ratio for prostate cancer (Cox proportional hazards p <0.001). Specifically prostate cancer risk per unit increase in prostate specific antigen was significantly different in carriers than in nonearriers of a minor allele (1.28 vs 1.10, THZ1 research buy respectively, Cox proportional hazards p <0.001), whereas men with a minor allele had a significantly higher risk of prostate cancer at prostate specific antigen levels greater than 6 ng/ml.

Conclusions: Our data suggest that genotype influences the risk of prostate cancer per unit increase in prostate specific antigen. Prostate cancer risk stratification using prostate specific antigen and genotype could improve prostate specific antigen test performance.”
“Recent data have shown that a functional NO-cGMP signalling system plays Tubastatin A an important role during development and seems to be operative

early during the differentiation of embryonic stem cells. The intriguing possibility exists that this role can be evolutionarily conserved between vertebrates and invertebrates. In this paper, we have analyzed the effect of NO-cGMP pathway on the regeneration process in Hydra vulgaris, the most primitive invertebrate possessing a nervous system. Our results indicate that NO production increased during Hydra regeneration. The NOS inhibitor L-NAME reduced the regenerative process and the same effect was obtained by treatment with either the specific guanylate cyclase inhibitor ODQ or the protein kinase G (PKG) inhibitor KT-5823. In contrast, the regeneration process HAS1 was increased by treating decapitated Hydra with the NO donor NOC-18. Furthermore, we found that cell proliferation was also increased by treating decapitated Hydra with the NO donor NOC-18 and reduced by treatment with the NOS inhibitor L-NAME. Our results strongly

suggest that the NO-cGMP-PKG pathway is involved in the control of the proliferative-differentiative patterns of developing and regenerating structures in cnidarians as well as bilaterians. (C) 2009 Elsevier Inc. All rights reserved.”
“Purpose: We examined the influences of age, body mass index and waist circumference on prostate specific antigen before and after adjusting for prostate volume. We also examined associations among age, body mass index, waist circumference and prostate volume.

Materials and Methods: We analyzed 38,380 Korean men 30 to 79 years old who received regular checkups at our health examination center. We had prostate volume data for 3,593 of them. We divided the subjects into 5 groups by age, 4 groups by body mass index and waist circumference (using Asia-Pacific obesity reference values), and quartiles for prostate volume.

(J Thorac Cardiovasc Surg 2012;144:1167-75)”
“Background Th

(J Thorac Cardiovasc Surg 2012;144:1167-75)”
“Background. The same executive dysfunctions and alterations in neuroimaging tests (both functional and structural) have been found in obsessive-compulsive patients and their first-degree relatives. These neurobiological findings are considered to be intermediate markers of the disease. The aim of

our study was to assess verbal and non-verbal memory in unaffected first-degree relatives, in order to determine whether these neuropsychological functions constitute a new cognitive marker for obsessive-compulsive disorder www.selleckchem.com/products/Flavopiridol.html (OCD).

Method. Recall and use of organizational strategies in verbal and non-verbal memory tasks were measured in 25 obsessive-compulsive patients, 25 unaffected first-degree relatives and 25 healthy volunteers.

Results.

First-degree relatives and healthy volunteers did not show differences on most measures of verbal memory. However, during the recall and processing of non-verbal information, deficits were found in first-degree relatives and patients compared with healthy volunteers.

Conclusions. The presence of the same deficits in the execution of non-verbal memory tasks in OCD patients and unaffected first-degree relatives suggests the influence of certain genetic and/or familial factors on this cognitive function in OCD and supports the hypothesis that deficits in non-verbal memory tasks could be considered as cognitive markers of the disorder.”
“Objective: The MK-8776 mouse effect of mechanical preconditioning on skeletal myoblasts in engineered tissue constructs was investigated to resolve issues associated with conduction block between skeletal myoblast cells and cardiomyocytes.

Methods: Murine skeletal myoblasts were used to generate engineered tissue constructs with or without application of mechanical strain. After in vitro myotube formation, engineered tissue constructs were co-cultured

for 6 days with viable embryonic heart slices. With the use of sharp electrodes, electrical coupling between engineered tissue constructs and embryonic heart slices was assessed in the presence or absence of pharmacologic agents.

Results: The isolation and expansion procedure for skeletal myoblasts resulted in high yields of homogeneously desmin-positive (97.1% +/- 0.1%) cells. Mechanical strain DOCK10 was exerted on myotubes within engineered tissue constructs during gelation of the matrix, generating preconditioned engineered tissue constructs. Electrical coupling between preconditioned engineered tissue constructs and embryonic heart slices was observed; however, no coupling was apparent when engineered tissue constructs were not subjected to mechanical strain. Coupling of cells from engineered tissue constructs to cells in embryonic heart slices showed slower conduction velocities than myocardial cells with the embryonic heart slices (preconditioned engineered tissue constructs vs embryonic heart slices: 0.04 +/- 0.02 ms vs 0.10 +/- 0.05 ms, P=.

Degradation of white matter tracts related to age or alcoholism s

Degradation of white matter tracts related to age or alcoholism should negatively affect the oscillatory activity within the network.

Objective This study aims to evaluate IWR-1 supplier the effect of alcoholism and age on delta and theta oscillations and the relationship between these oscillations and measures of white matter microstructural integrity.

Methods Data from ten long-term alcoholics to 25 nonalcoholic controls were used to derive P3 from Fz, Cz, and Pz using a visual

GO/NOGO protocol. Total power and across trial phase synchrony measures were calculated for delta and theta frequencies. DTI, 1.5 T, data formed the basis of quantitative fiber tracking in the left and right cingulate bundles and the genu and splenium of the corpus callosum. Fractional anisotropy and diffusivity (lambda L and lambda T) measures were calculated from each tract.

Results NOGO P3 amplitude and delta power at Cz were smaller in alcoholics than controls. Lower delta total power was related to higher lambda T in the left and right cingulate bundles. GO P3 amplitude was lower and GO P3 latency was Idasanutlin chemical structure longer with advancing age, but none of the time-frequency analysis measures displayed significant age or diagnosis effects.

Conclusions The relation of delta total power at CZ with lT in the cingulate bundles provides

correlational evidence for a functional role of fronto-parietal white matter tracts in inhibitory processing.”
“Four closely related potyviruses, Sweet potato feathery mottle virus (SPFMV). Sweet potato virus C (SPVC), Sweet potato virus G (SPVG) and/or Sweet potato virus 2 (SPV2), are involved in sweet potato virus disease complexes worldwide. Identification and detection of these viruses are complicated by high similarity among their genomic sequences, frequent occurrence as mixed infections and

low titer in many sweet potato cultivars. A one-tube Etoposide in vivo multiplex reverse transcription-PCR (mRT-PCR) assay was developed for simultaneous detection and differentiation of SPFMV, SPVC, SPVG and SPV2. Four specific forward primers unique to each virus and one reverse primer based on the region conserved in all four viruses were selected and used in the assay. The mRT-PCR assay was optimized for primer concentration and cycling conditions. It was tested using sweet potato plants infected naturally with one to four target viruses and then evaluated using field samples collected from southwestern China. The mRT-PCR assay is reliable and sensitive as a simple, rapid and cost-effective method to detect these pathogens in sweet potato. This assay will be useful to quarantine and certification programs and virus surveys when large numbers of samples are tested. Published by Elsevier B.V.”
“To the Editor: Chan and colleagues (July 18 issue)(1) describe a mixed-strain infection with two Mycobacterium tuberculosis genotypes in the mummified body of Terezia Hausmann, who died in the late 18th century.

85 points (p = 002) The association persisted despite the adjus

85 points (p = .002). The association persisted despite the adjustment for demographic and cardiovascular risk factors,

and after accounting for familial and genetic factors by comparing twins within pairs. A significant interaction was found between posttraumatic stress disorder (PTSD) and HRV, such that total power and ultra low frequency were associated Crenolanib with SRT in twins (n = 362) without PTSD, but not in those with PTSD. Conclusions: Lower frequency spectra of HRV are associated with verbal, but not visual, learning and memory, particularly in subjects without PTSD. This association may indicate that autonomic nervous system dysregulation plays a role in cognitive decline.”
“Objective: The objective of our study was to report our hospital and long-term results after reinterventions on the thoracic aorta.

Methods: Between 1986 and 2011, 224 reoperations on the proximal thoracic aorta after previous aortic surgery were performed in our institution. The number of reinterventions quadrupled during the course of the study period. Mean patient age was 58.1 years, and 174 patients

(77.7%) were male. An urgent/emergency operation was performed in 39 patients (17.4%). Indications for surgery included degenerative and chronic postdissection aneurysm (n = 166), false aneurysm (n = 31), active prosthetic infection (n = 16), acute dissection (n = 10), and other (n = 1). Surgical LCZ696 ic50 procedures involved the aortic root in 40.6% of patients, the ascending aorta in 9.4%, the aortic arch

in 24.6%, and the entire proximal thoracic aorta in 25.4%.

Results: Hospital mortality was 12.1%. On multivariate Prostatic acid phosphatase analysis, cardiopulmonary bypass time (odds ratio, 1.1023/minute; P < .001), and urgent/emergency status (odds ratio, 5.6; P < .001) emerged as independent predictors of hospital mortality. The follow-up was 98.7% complete. Estimated 1-, 5-, and 10-year survival rates were 84.4%, 72.5%, and 48.5%, respectively. Eighteen reinterventions were performed during follow-up-16 because of the progression of aortic disease at the proximal aorta (n = 2) and downstream aorta (n = 14). Freedom from reoperation at 1, 5, and 10 years was 95.6%, 90.2%, and 81.5%, respectively.

Conclusions: Reoperative aortic surgery was associated with satisfactory short-and long-term results, especially if carried out on an elective basis. The extent of the aortic replacement did not impact survival and was associated with a reduced need for reintervention. The progressive nature of aortic disease and the favorable results of elective primary aortic interventions suggest favoring aggressive aortic resections at initial surgery. (J Thorac Cardiovasc Surg 2013;S145:78-84)”
“Objective: Recent evidence suggests a role for diet quality in the common mental disorders depression and anxiety.

The requested weight distribution for each condition

was

The requested weight distribution for each condition

was verified using force plates. Electromyography data were collected from both tibialis anterior (TA) and the left sternocleidomastoid muscles.

Results: In the TA, startle responses occurred much more frequently during normal standing (26% of trials) compared to both sitting (6% of trials, p < 0.01) and bilateral unloading (3% of trials, p < 0.01). In the asymmetrical stance conditions, startle responses in the TA were more common in the loaded leg (21% of trials) compared to the unloaded leg (10% of trials, p < 0.05).

Discussion: The occurrence of startle responses in the leg selleck products muscles was strongly influenced by load. Hence, it is likely that information from load receptors influences startle

response activity. We suggest that, in a stationary position, startling stimuli result in a descending volley from brain-stem circuits, which is gated at the spinal level by afferent input from load receptors. (C) 2013 IBRO. Published by Elsevier Ltd. All rights reserved.”
“In the late 19th Century, Sigmund Freud described the phenomenon in which people are unable to recall events from early childhood as infantile amnesia. Although universally observed, Milciclib concentration infantile amnesia is a paradox; adults have surprisingly few memories of early childhood despite the seemingly exuberant learning capacity of young children. How Montelukast Sodium can these findings be reconciled? The mechanisms underlying this form of amnesia are the subject of much debate. Psychological/cognitive theories assert that the ability to maintain detailed, declarative-like memories in the long term correlates with

the development of language, theory of mind, and/or sense of “”self.”" However, the finding that experimental animals also show infantile amnesia suggests that this phenomenon cannot be explained fully in purely human terms. Biological explanations of infantile amnesia suggest that protracted postnatal development of key brain regions important for memory interferes with stable long-term memory storage, yet they do not clearly specify which particular aspects of brain maturation are causally related to infantile amnesia. Here, we propose a hypothesis of infantile amnesia that focuses on one specific aspect of postnatal brain development-the continued addition of new neurons to the hippocampus. Infants (humans, nonhuman primates, and rodents) exhibit high levels of hippocampal neurogenesis and an inability to form lasting memories. Interestingly, the decline of postnatal neurogenesis levels corresponds to the emergence of the ability to form stable long-term memory.

After weighting, 30-day and 90-day mortality were compared betwee

After weighting, 30-day and 90-day mortality were compared between the

109 patients placed on dialysis early, within the first day of surgery, and those with delayed dialysis, commencing on the second day of surgery or later, using logistic regression and survival analysis. Mortality was 28.1% at 30 days, and was 36.3% during follow-up. Nirogacestat order Early dialysis was associated with a 46.7% decrease in the 30-day and a 43.5% decrease in the 90-day mortality rate when compared with delayed dialysis. All other short-term outcome variables were similar. Thus, initiation of peritoneal dialysis on the day of or the first day following surgery was associated with a significant decrease in mortality in neonates and infants with acute kidney injury.

Kidney International (2012) 82, 474-481; doi:10.1038/ki.2012.172; published online 23 May 2012″
“Objectives: To examine baseline clinical features of psychogenic nonepileptic seizures (PNES) in a large cohort and to investigate outcome over a period of up to 10 years. Studies investigating PNES have been limited by differences YAP-TEAD Inhibitor 1 mw in diagnostic criteria, short follow-up periods, and the use of limited outcome measures. Method:

Patients with PNES were identified, using strict diagnostic criteria. Baseline neurological, neuropsychiatric, and neuroimaging data were obtained from medical records. Long-term outcome was assessed with ratings of seizures, psychopathology,

and quality of life in a subset of the patients. Results: Patients with PNES (n = 221) experienced long delays in diagnosis (mu, 5.6 years; standard deviation, 7.7 years) Phosphoglycerate kinase and high rates (>60%) of prolonged treatment with antiepileptic drugs. Compared with previous studies, a relatively low proportion (8.1% to 17.9%, depending on diagnostic criteria) had comorbid epilepsy. An unexpected finding was that 22.6% of PNES patients had magnetic resonance imaging abnormalities. Patients assessed at follow-up (n = 61) exhibited poor long-term outcomes with ongoing PNES, high rates of psychopathology, low rates of specialist follow-up, poor quality of life, and poor overall levels of functioning. Conclusions: These results demonstrate the need for earlier diagnosis of PNES and comorbidities and highlight the need for diagnostic and therapeutic approaches that combine neurological and psychiatric perspectives.”
“While viewing works of art in galleries, we evaluate them by integrating at least two types of information: their visual properties (e.g., colors, symmetry, and proportion) and contextual information accompanying them (e.g., titles and names of artists). How rapidly the brain integrates visual and contextual information of artworks remains to be investigated.

(C) 2012 Elsevier Ireland Ltd All rights reserved “
“The ob

(C) 2012 Elsevier Ireland Ltd. All rights reserved.”
“The objective of this study was to examine the prevalence of IgG and IgM anticardiolipin

antibodies GW3965 price (aCL) in schizophrenic patients and to determine the relation of aCL levels with neuroleptic medication and psychotic symptoms. Twenty-three patients with acute episodes of chronic schizophrenia, drug-free for at least 3 months before entering the study, were tested for aCL at admission (T1) and 42 days (T2) after neuroleptic treatment started. Blood samples were taken from 20 healthy volunteers as well. Diagnosis was performed according to DSM-IV. Serum samples were analysed for IgG and IgM autoantibodies against beta2-glycoprotein-1-cardiolipin complex by commercially available ELISA kits (Binding-site, Selinexor clinical trial UK). Significantly higher levels of aCL antibodies of both isotypes were found in schizophrenic patients versus controls. In patients IgM-aCL positivity was significantly more frequent than in controls. The elevated IgM-aCL and IgG-aCL values were not associated with neuroleptic treatment and psychotic symptoms, as measured by the Positive and Negative Syndrome Scale and the Pentagonal Structural Model of Schizophrenic Symptoms. The negative correlation of IgM-aCL and IgG-aCL with the positive symptoms scale and the autistic preoccupation scale (Pentagonal Structural Model) may indicate the

consumption of these antibodies in the exacerbation enough of the disease. (C) 2008 Elsevier Ireland Ltd. All rights reserved.”
“Gene therapy is a promising therapeutic tool for Parkinson’s disease (PD), but there is a lack of evaluated cell specific promoters that are relevant for the disease. We have chosen PD relevant promoter candidates for gene therapy vectors based on either previous studies: Drd1a, Drd2 and pDyn, or from a microarray study on parkinsonian patients; ACE, DNAJC3, GALNS, MAP1a and RNF25. These candidates have been evaluated

in rat striatum to determine their suitability for use in cell specific vectors. The promoters had a neuronal specificity of 91-100%. The efficiency of the promoters was variable, but RNF25, DNAJC3 and MAP1a were comparable to widely used ubiquitous promoters. MAP1a was also affected by dopamine depletion. (C) 2012 Elsevier Ireland Ltd. All rights reserved.”
“Schizophrenia may be associated with inflammatory reactions and C-reactive protein (CRP) is a nonspecific serum protein marker for persisting inflammatory states. This study aimed to assess concentrations of high sensitivity CRP (hsCRP) in schizophrenic Arab patients and evaluate the relationships of hsCRP levels with aspects of clinical phenotypes of the disease. Two age-matched groups of subjects were studied: (1) healthy controls, HC, n = 165; (2) patients with schizophrenia, SZ: n = 207.

Methods: A temporary edge-to-edge repair model was created The m

Methods: A temporary edge-to-edge repair model was created. The mitral valve motion was assessed by using a high-speed digital video camera, and the motion of the

mitral annulus was measured by means of sonomicrometric analysis with or without performing edge-to-edge repair (n = 5). The left ventricular volumetric measurements were also measured with a conductance catheter. One cardiac cycle was divided into 4 phases: the mitral valve open phase, the isovolumic contraction phase, the aortic valve open phase, and the isovolumic relaxation phase.

Results: The mitral valve was click here divided into 2 orifices by using the edge-to-edge technique, and the mitral valve area decreased by approximately 30%. The ratio of mitral valve open phase significantly decreased (31.9% +/- 3.4% vs 41.4% +/- 3.7%, P = .04). There were no significant differences in the diameter and the changes of anteroposterior dimensions of the mitral annulus. The stroke volume and the peak positive and negative dp/dt values showed no obvious change, but dv/dt values increased slightly without significance after removing the edge-to-edge suture (118 +/- 25 vs 130 +/- 17 mL/s, P = .14).

Conclusions:

The mitral valve area decreased slightly; however, edge-to-edge repair did not create symptomatic mitral stenosis and showed no adverse affects on cardiac function.”
“The contribution of (R)-enantiomer of N-methylsalsolinol (1,2-dimethyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline; NMSal) to the degeneration of dopaminergic learn more neurons in the course of Parkinson’s disease (PD) has been predominantly suggested by in vitro experiments in cell culture and by an in vivo study in which this compound has been directly injected into the rat striatum. The aim of the present study was to examine the effects of racemic NMSal (50 and 100 mg/kg) administered systemically, acutely and chronically Elesclomol (STA-4783) for 21 days to rats, on the neurochemical and behavioral markers of PD. Our results showed that racemic NMSal easily penetrated the blood-brain barrier. Its

brain level was relatively high 2-6 h after a single injection than gradually decreased. NMSal was quickly eliminated from the rat brain, its concentration 24 h after withdrawal from chronic treatment was very low. NMSal at both examined doses did not affect striatal and nigral levels of dopamine (DA) 2 h after the first and last chronic injections, however, it markedly changed DA catabolism. In the striatum both its doses evoked a significant acceleration of the total and oxidative, monoamine oxidase (MAO)-dependent DA catabolism without affecting the catechol-O-methyltransferase (COMT)- dependent O-methylation. In the substantia nigra (SN), only the higher dose of NMSal produced such effect. DA catabolism in either structure was the same as in control 24 h after cessation of chronic treatment.


“Conventional

substance-abuse treatments have only


“Conventional

substance-abuse treatments have only had limited success especially for drugs such as cocaine, methamphetamine and nicotine. Newer data have begun to shed light on the complexity of the addictive process and new treatment approaches, including interference with brain neurosteroids, to attenuate drug-seeking behavior, are in advanced stages of development. Neurosteroids are synthesized in the brain and peripheral tissues, from cholesterol or steroidal this website precursors imported from peripheral sources. The most abundant neurosteroids in the human body are DHEA and its sulfate ester, DHEAS. These neurosteroids can act as modulators of neurotransmitter receptors, such as gamma-aminobutyric-acid-type A (GABA(A)), NMDA, and sigma-1 receptors which may contribute to apparent enduring behavioral Cediranib cell line manifestations facilitated by substances of abuse. Neurosteroid concentrations respond to environmental and behavioral circumstances, such as stress and mood, both which are involved in the progression of substance use that advance substance addiction.

This article reviews the current literature pertaining to neurosteroids and substances of abuse, focusing on DHEA, and discusses its role in drug-seeking behavior as suggested by preclinical observations. (C) 2010 Elsevier Ltd. All rights reserved.”
“This review summarizes findings from human and animal research investigating the influence

of progesterone and its metabolites Magnesium chelatase allopreganolone and pregnanolone (progestins) on the effects of cocaine and other drugs of abuse. Since a majority of these studies have used cocaine, this will be the primary focus; however, the influence of progestins on other drugs of abuse will also be discussed. Collectively, findings from these studies support a role for progestins in (1) attenuating the subjective and physiological effects of cocaine in humans, (2) blocking the reinforcing and other behavioral effects of cocaine in animal models of drug abuse, and (3) influencing behavioral responses to other

drugs of abuse such as alcohol and nicotine in animals. Administration of several drugs of abuse in both human and nonhuman animals significantly increased progestin levels, and this is explained in terms of progestins acting as homeostatic regulators that decrease and normalize heightened stress and reward responses which lead to increased drug craving and relapse. The findings discussed here highlight the complexity of progestin-drug interactions, and they suggest a possible use for these agents in understanding the etiology of and developing treatments for drug abuse. (C) 2010 Elsevier Ltd. All rights reserved.”
“Rapid expansion of the standardised approach to tuberculosis diagnosis and treatment that is recommended by WHO allowed more than 36 million people to be cured between 1995 and 2008, averting up to 6 million deaths. Yet tuberculosis remains a severe global public health threat.