Establishment of the Ph. Eur. BRP for varicella vaccine batch 1.

The European Pharmacopoeia (Ph. Eur.) monograph for varicella vaccine (live) (0648) requires a vial of an appropriate reference material to be titred in triplicate to validate each assay and the virus concentration of the reference preparation is monitored using a control chart to determine the assay consistency.

Achievements and perspectives to overcome the poor solvent resistance in acetone and butanol-producing microorganisms.

Anaerobic bacteria such as the solventogenic clostridia can ferment a wide range of carbon sources (e.g., glucose, galactose, cellobiose, mannose, xylose, and arabinose) to produce carboxylic acids (acetic and butyric) and solvents such as acetone, butanol, and ethanol (ABE).

Private sector contributions to pharmaceutical science: thirty-five summary case histories.

Expanding government purchases of prescription medicines increase the likelihood of public policies constraining prices and/or the formulary choices available to the beneficiaries of government programs. This can be predicted to reduce private sector incentives for the research and development of new and improved medicines. One response to that argument has been the premise that most of the important scientific advances that yield new and improved medicines do not result from private sector research, but instead are the fruits of research efforts financed or conducted by public agencies, the National Institutes of Health foremost among them.

Accomplishments in genome-scale in silico modeling for industrial and medical biotechnology.

Driven by advancements in high-throughput biological technologies and the growing number of sequenced genomes, the construction of in silico models at the genome scale has provided powerful tools to investigate a vast array of biological systems and applications. Here, we review comprehensively the uses of such models in industrial and medical biotechnology, including biofuel generation, food production, and drug development. While the use of in silico models is still in its early stages for delivering to industry, significant initial successes have been achieved.

Ultrafast structural phase transition driven by photoinduced melting of charge and orbital order.

We use femtosecond x-ray diffraction to probe directly the structural dynamics of a charge ordered and orbitally ordered thin film of La0.42Ca0.58MnO3 initiated by an ultrafast optical pulse.

Can translational medicine bring us out of the R&D wilderness?

After 50 years of wandering among new discovery technologies and a worrying antiquated development process, the research and development (R&D) enterprise may finally have found a way out of its wilderness through the auspices of translational medicine. For that to happen, a number of problems have to be confronted. Most prominent is the traditional problem credited with giving rise to translational medicine - the lack of a feedback loop from bench to bedside.

Use of an adapted problem-based learning approach to aid the development of clinical audit skills in a palliative care setting.

Aim: To share the experiences of an adapted problem-based learning approach to audit within a palliative care setting.

Method: A small group learning approach to design and undertake an audit.

Result: This approach was a positive learning experience within clinical practice that enabled the group to develop their knowledge of audit planning, design, analysis and reporting as well as their problem-solving, written and communication skills.

Non-steroidal anti-inflammatory drugs in sports medicine: guidelines for practical but sensible use.

Introduction: Non-steroidal anti-inflammatory drugs (NSAID) are commonly used in sports medicine. NSAID have known anti-inflammatory, analgesic, antipyretic and antithrombotic effects, although their in-vivo effects in treating musculoskeletal injuries in humans remain largely unknown. NSAID analgesic action is not significantly greater than paracetamol for musculoskeletal injury but they have a higher risk profile, with side-effects including asthma exacerbation, gastrointestinal and renal side-effects, hypertension and other cardiovascular diseases.

Directly observing squeezed phonon states with femtosecond x-ray diffraction.

Squeezed states are quantum states of a harmonic oscillator in which the variance of two conjugate variables each oscillate out of phase. Ultrafast optical excitation of crystals can create squeezed phonon states, where the variance of the atomic displacements oscillates due to a sudden change in the interatomic bonding strength. With femtosecond x-ray diffraction we measure squeezing oscillations in bismuth and conclude that they are consistent with a model in which electronic excitation softens all phonon modes by a constant scaling factor.

Reducing pressure ulcer prevalence rates in the long-term acute care setting.

Information about pressure ulcer prevalence, prevention, and optimal management strategies in the long-term acute care hospital (LTACH) setting is sparse. Although care processes in other patient care settings have been reported to affect pressure ulcer prevalence rates, the effect of such programs in the LTACH is unknown. To reduce perceived above-average pressure ulcer prevalence rates and improve care processes, a 108-bed LTACH used a failure mode and effects analysis to identify and address high-priority areas for improvement.

Structural determination of a photochemically active diplatinum molecule by time-resolved EXAFS spectroscopy.

Metallica: A large contraction of the Pt-Pt bond in the triplet excited state of the photoreactive [Pt(2)(P(2)O(5)H(2))(4)](4-) ion is determined by time-resolved X-ray absorption spectroscopy (see picture). The strengthening of the Pt-Pt interaction is accompanied by a weakening of the ligand coordination bonds, resulting in an elongation of the platinum-ligand bond that is determined for the first time.

The economics of pediatric formulation development for off-patent drugs.

Background: Many drugs currently used in children have never been adequately studied in rigorous scientific trials. Although these medications can still be prescribed in the pediatric setting, they are considered "off-label" because they are not specifically approved for use in children. The role of the Economics Working Group (EWG) within the Pediatric Formulation Initiative (PFI) of the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) is to identify economic barriers and to propose possible mechanisms to create cost-effective and appropriately formulated products for off-patent pediatric drugs and to ensure their distribution and availability.

Femtosecond XANES study of the light-induced spin crossover dynamics in an iron(II) complex.

X-ray absorption spectroscopy is a powerful probe of molecular structure, but it has previously been too slow to track the earliest dynamics after photoexcitation. We investigated the ultrafast formation of the lowest quintet state of aqueous iron(II) tris(bipyridine) upon excitation of the singlet metal-to-ligand-charge-transfer (1MLCT) state by femtosecond optical pump/x-ray probe techniques based on x-ray absorption near-edge structure (XANES). By recording the intensity of a characteristic XANES feature as a function of laser pump/x-ray probe time delay, we find that the quintet state is populated in about 150 femtoseconds.

Epidemiological modelling of chlamydial abortion in sheep flocks.

Chlamydophila (C.) abortus, responsible for chlamydial abortion (commonly known as Enzootic Abortion of Ewes [EAE]), causes major financial losses to the sheep industry worldwide. There remain many uncertainties surrounding the epidemiology of EAE.

Hematopoietic stem cell responsiveness to exogenous signals is limited by caspase-3.

Limited responsiveness to inflammatory cytokines is a feature of adult hematopoietic stem cells and contributes to the relative quiescence and durability of the stem cell population in vivo. Here we report that the executioner Caspase, Caspase-3, unexpectedly participates in that process. Mice deficient in Caspase-3 had increased numbers of immunophenotypic long-term repopulating stem cells in association with multiple functional changes, most prominently cell cycling.

Nanoscale depth-resolved coherent femtosecond motion in laser-excited bismuth.

We employ grazing-incidence femtosecond x-ray diffraction to characterize the coherent, femtosecond laser-induced lattice motion of a bismuth crystal as a function of depth from the surface with a temporal resolution of 193+/-8 fs. The data show direct consequences on the lattice motion from carrier diffusion and electron-hole interaction, allowing us to estimate an effective diffusion rate of D=2.3+/-0.

A prospective, randomized, multisite clinical evaluation of a transparent absorbent acrylic dressing and a hydrocolloid dressing in the management of Stage II and shallow Stage III pressure ulcers.

Objective: To compare clinical performance of a transparent absorbent acrylic dressing (3M Tegaderm Absorbent Clear Acrylic Dressing ]TAAD[; 3M Company, St Paul, MN) and a hydrocolloid dressing (HD ]DuoDERM CGF, ConvaTec, ER Squibb & Sons, Princeton, NJ[) in the management of Stage II and shallow Stage III pressure ulcers.

Design: Prospective, open-label, randomized, comparative, multisite clinical evaluation. Patients were followed up for a maximum of 56 days or until their ulcer healed.

Travelling to China for the Beijing 2008 Olympic Games.

The Beijing Olympics will be the world's premier sporting event in 2008. Countries should begin planning for appropriate support for their Olympic athletes. Experienced medical staff should be appointed early and become familiar with the major medical or injury concerns of athletes and officials.

Quality improvements in end of life care: insights from two collaboratives.

Background: Just a few generations ago, most people died suddenly, at any age. Now, most die of serious chronic disease, after a substantial period of disability. The care system does not serve this burgeoning population well.

Heparan sulfate and heparin enhance ERK phosphorylation and mediate preBCR-dependent events during B lymphopoiesis.

As B lineage cells develop, they interact with cells, proteins, and extracellular matrix components of the surrounding microenvironment. In vitro, one critical checkpoint for developing cells occurs as they lose responsiveness to IL-7. These cells require contact with either stromal cells or other B lineage cells to mature.

Diffractive optics implementation of six-wave mixing.

Diffractive optics are applied to six-wave mixing processes to provide a single optic approach to attaining the required, relatively complex, phase-matching geometry to discriminate against lower-order nonlinear responses. The diffractive optics were designed specifically for broad-bandwidth operation and passive phase locking of the appropriate pulse pairs for use in femtosecond two-dimensional Raman studies of the dynamic structure of liquids. The fifth-order signal was studied in liquid CS>(2); two different colors were used for the excitation and the probe to reduce background scatter, as were two different phase-matching geometries with different degrees of suppression of cascaded third-order processes.