Renal uptake and retention of radiopharmaceuticals are dependent

Renal uptake and retention of radiopharmaceuticals are dependent not only on the characteristics of the targeting molecule, but also on the

type of radionuclide and chelating agent learn more used. We observed that the renal uptake levels of 111In-DOTA-RAFT-c(-RGDfK-)4 and 64Cu-cyclam-RAFT-c(-RGDfK-)4 were substantially different, with biodistributions at 24 h after injection of ∼40%ID/g and ∼10%ID/g, respectively [6] and [19]. Therefore, in this study, we determined the effect of GF on the renal uptake and retention of 64Cu-cyclam-RAFT-c(-RGDfK-)4 in normal and tumor-bearing mice. In comparison with the published work on the 111In-labeled analog, the present study particularly evaluated (1) the dose–effect relationship

of GF, (2) the combined effect of GF and Lys, (3) the spatiotemporal changes in renal radioactivity caused by GF in the presence or absence of Lys (GF ± Lys), and (4) the influence http://www.selleckchem.com/products/Romidepsin-FK228.html of GF ± Lys on the metabolism of 64Cu-cyclam-RAFT-c(-RGDfK-)4. Another novelty is that the present study explored the mechanisms underlying the action of GF and Lys using the noninvasive and quantitative PET imaging technology. Cyclam-RAFT-c(-RGDfK-)4 (MW 4119.6) was synthesized as reported previously [5], and radiolabeled with 64Cu in accordance with our previous report [6] with minor modifications. In brief, 0.08 mM cyclam-RAFT-c(-RGDfK-)4 in dimethyl sulfoxide and 1.48 MBq/μL 64CuCl2 in ammonium citrate buffer (100 mM, pH 5.5) were mixed in a ratio of 1:1 (v/v) and incubated at 37 °C for 1 h. The radiolabeling efficiency, as determined by reversed phase (RP) high-performance

liquid chromatography, was >98%, and the specific radioactivity was ∼18.5 MBq/nmol. Gelofusine (Braun Medical, Oss, Netherlands), science kindly provided by Dr. Lucie Sancey (University of Lyon 1, France), consists of a 40 g/L solution of succinylated gelatin for intravenous infusion, and was diluted in normal saline (NS) for use in the present study. l-Lysine (Sigma–Aldrich, Buchs, Switzerland) was dissolved in NS and added to the injectate prior to administration. Human glioblastoma U87MG cells naturally expressing αVβ3 were cultured as previously described [6]. Animal procedures were approved by Institutional Animal Care and Use Committee of the National Institute of Radiological Sciences (NIRS; Chiba, Japan). Normal or tumor-bearing mice (female BALB/cAJcl-nu/nu; CLEA Japan, Inc., Tokyo, Japan) at 7–8 weeks of age were examined. The tumors, 7–10 mm in diameter, were developed by subcutaneous (s.c.) injection of 1 × 107 cells into the left shoulder region of the mice. Mice were injected via tail vein (i.v.) with 0.74 MBq 64Cu-cyclam-RAFT-c(-RGDfK-)4 with or without co-injection of GF, Lys, or both (GF + Lys). The biodistribution study consists of the following 3 sequential experiments.

Most events occurring at a higher rate after LAIV were found in c

Most events occurring at a higher rate after LAIV were found in comparison with unvaccinated controls, while most events occurring at a lower rate after LAIV were found in comparison with TIV-vaccinated controls. These differences are most likely the result of underlying differences in the nonrandomized comparison groups Gemcitabine supplier that

remained despite subject matching. Despite efforts to exclude individuals with high-risk underlying medical conditions from the analysis populations, it is likely that TIV-vaccinated controls had a poorer health status relative to LAIV-vaccinated subjects because LAIV, unlike TIV, is not recommended for adults with asthma, immunosupression, and other underlying medical conditions [14]. This selection bias could explain the decreased rates of respiratory events, SAEs, hospitalizations, pregnancy-related events, diabetes, AIDS, and SLE among LAIV recipients. In addition, an underlying bias may exist between the LAIV recipients and unvaccinated controls since individuals who do not seek vaccination may be less likely to seek other routine medical care. Furthermore, Kaiser health system members are prompted to receive recommended preventative health services or schedule consultations with specialists at the time of vaccination. Therefore, fewer MAEs related to routine preventive care (well visits, vision disorder, obesity and benign lesions) would be expected to be reported for unvaccinated Cabozantinib concentration controls in comparison

to those vaccinated with LAIV. A few medical events occurred at a higher rate after LAIV in comparison to more than one control group. Mastitis, breast lump/cyst and sleep disorders occurred at a higher rate after LAIV compared with TIV or unvaccinated controls. There is no clear biological relationship between LAIV vaccination and these events. Also, after correcting for multiple comparisons, these events were not statistically increased and as a result may be due to chance alone given the large number of comparisons

made in this analysis. many Although LAIV is not approved for use in pregnant women, inadvertent vaccination does rarely occur. Currently, there is little information available on fetal outcomes [19]. Of the 54 live births with information available reported in this study, there were 3 premature births (5.6%), and 1 child born with clinodactyly (1.9%), a shortening and curvature of the fifth finger. However, a causal association between LAIV and clinodactyly is unlikely in this instance as LAIV was administered to the mother late in the second trimester, after the period of fetal limb development. Overall, rates of fetal outcomes in this study were consistent with rates observed in the offspring of the general population [20] and [21]. Other studies reporting safety events associated with LAIV in pregnant women support our results. VAERS data indicated that 27 pregnant women from 2003 to 2009 received LAIV, and no congenital anomalies or adverse fetal events were reported [22].

The authors alone are responsible for the views expressed in this

The authors alone are responsible for the views expressed in this article, and they do not necessarily represent the decisions, policy or views of the institutions which with they are affiliated. DMK is a consultant to Sanofi Pasteur and coinventor of a patent covering the use of replication-defective mutants as herpes simplex vaccines, which has been licensed by Harvard University to Sanofi Pasteur. LC reports holding stock

in Immune Design, and is a co-inventor on several patents associated with identifying T-cell antigens to HSV-2 that are directed at an HSV-2 vaccine. J.I.C. has a Cooperative Research and Development Agreement (CRADA) with Sanofi Pasteur that provides funding to evaluate an HSV-2 vaccine in a clinical trial, and

a CRADA with Immune Design Corporation that provided funding to test a therapeutic HSV-2 vaccine in an animal model. CDD reports no conflicts of interest. “
“Tubal factor infertility (TFI) is a globally significant public CHIR-99021 datasheet health problem caused by several microbial agents, including untreated genital infections with Chlamydia trachomatis [1]. C. trachomatis remains the most commonly reported infectious disease in many countries. It is estimated that in 2008, there were 106 million new cases of C. trachomatis in adults (15–49 years) with an estimated 100 million people infected at any one time [2]. These acute infections translate into significant downstream health costs with an estimated 714,000 disability-adjusted life

years (DALYs) lost as a result of C. trachomatis infections [3]. In the United States alone, direct medical costs for chlamydial infections exceed US$ 500 million U0126 mw annually, excluding costs for screening programmes and indirect costs like lost productivity [4]. The largest burden of disease from C. trachomatis is in women where untreated genital infections can lead to pelvic inflammatory disease (PID) and, in some cases, sequelae including TFI (18% cases following symptomatic PID) resulting from fallopian tube scarring [1] and [5]. Infections during pregnancy may cause premature labour and may also cause neonates to develop conjunctivitis or pneumonia [6]. The high prevalence whatever of infections among women of child-bearing age exposes an estimated 100,000 neonates to Chlamydia annually in the United States [7]. In men, C. trachomatis is the most commonly reported sexually transmitted infection (STI) and the leading cause of non-gonococcal (non-specific) urethritis [8] and [9]. Following upper genital tract ascension, C. trachomatis may cause acute infectious epididymitis [10]; C. trachomatis infections have been reported in 40–85% men with epididymitis [11]. However, up to 90% of chlamydial infections in females and 50% in males are asymptomatic. This indicates that the incidence of reported chlamydial infections from surveillance data is likely a gross global under-estimate and that screening of asymptomatics would detect even more infections [12], [13] and [14].

Good cross-reactivity against genotype X isolate virulent Uganda

Good cross-reactivity against genotype X isolate virulent Uganda 1965 ( Fig. 5A) was observed, and this is the reason why pigs were challenged with virulent Uganda 1965 in experiment 2. As predicted from this ex vivo assay, all of the pigs immunised and challenged with virulent Uganda 1965 virus were protected. No cross-reactivity to genotype XIII isolate Malawi

LIL 20/1 was detected and this correlates with the observation that OURT88/3 and OURT88/1 immunised pigs are not protected from Malawi LIL 20/1 challenge [2,Denyer et al. unpublished observation]. Taken together these data suggest that this ex vivo, IFN-γ ELISPOT assay might be a useful tool to assess vaccine efficacy and/or to assess possibility of ASFV isolate-cross-protection. An anti-ASFV antibody response also developed after OURT88/3 immunisation and was boosted after the OURT88/1 inoculation. The anti-ASFV antibody titre selleck products was measured by a p72 competition ELISA, however we could not conclude from these experiments whether the level of antibody developed by our immunisation protocol is either sufficient or necessary for protection. OURT88/3 has been

used as a vaccine model to identify what is required for inducing ASFV protective immunity in domestic pigs. The observations of adverse effects of OURT88/3 immunisation in some of the pigs vaccinated in France suggest that further attenuation of this isolate by deleting additional genes or possibly changing the dose or route of vaccination may be useful. Secondly, the results S3I-201 chemical structure from experiment 2 showed that our current protocol did not induce complete protection in all of the pigs immunised with the virulent OURT88/1 boost. This may be due to the genetic background of the pigs as we have previously demonstrated that cc inbred pigs are also not always protected by OURT88/3 from OURT88/1 challenge [11]. It is possible that the age and/or size of pigs at the time of the first immunisation may be important for the induction of complete protection since the pigs used in France were smaller and younger than those used at Pirbright. Florfenicol It will also be

useful in future to compare the effects of boosting with the non or low virulent OURT88/3 since this would help to avoid adverse effects resulting from boosting with virulent OURT88/1. Our observation that cross-protection can be induced between different genotypes is important since this suggests when an ASFV vaccine is developed, its practical use in the field is likely to be extended in areas where several genotypes are present. Additional experiments are required to establish the extent of cross-protection. This work was financially supported by Wellcome Trust (Animal Health in the Developing World Initiative), DEFRA (SE1512), BBSRC, and was supported by the EU Network of Excellence, EPIZONE (Contract No FOOD-CT-2006-016236). Jordi M. Argilaguet was supported by Spanish Research Council.

Whereas the complex 2 shows an irreversible peak at 0 44 V at a s

Whereas the complex 2 shows an irreversible peak at 0.44 V at a scan rate

of 100 mVs−1. The redox process is assigned to CuII/CuI couple. 30 and 31 The characterization of DNA recognition by transition metal complex has been aided by the DNA cleavage chemistry that is associated with redox-active or photo-activated metal complexes.32 Many copper complexes have been shown to cleave DNA in the presence of H2O2 due to their ability to behave like a Fenton catalyst.33 The ability of present complexes to effect DNA cleavage Selleckchem BAY 73-4506 was monitored by gel electrophoresis using supercoiled pUC19 DNA in Tris–HCl buffer. Fig. 1 shows the nuclease activity of the complexes in the presence and absence of hydrogen peroxide. Lane 1 indicates the control DNA without any additives. Lane 2 shows the activity of DNA in the presence of peroxide. As seen in lanes 3–5, incubation of the complexes 1–3 alone with DNA could not bring about any apparent

cleavage. This confirms that the present copper(II) complexes are not capable of bringing about any hydrolytic cleavage of DNA. The reason behind is that the hydrolytic cleavage requires selleck screening library coordinative binding of the copper(II) complex to the phosphate moiety of the nucleic acid.34 Interestingly all the three complexes show DNA cleavage activity at a concentration of 48 μM. But the cleavage efficiency of complex 2 was found to be significantly lower than that of the other two complexes. It is believed that when the present

redox active copper complexes were interacted with DNA in the presence of hydrogen peroxide as an oxidant hydroxyl radicals Terminal deoxynucleotidyl transferase might be produced.22, 23 and 24 These hydroxyl radicals are responsible for cleavage of DNA. In order to establish the reactive species responsible for the cleavage of DNA, we carried out the experiment in the presence of histidine and DMSO. As seen in lanes 2–4 in Fig. 2, the cleavage activity was not found to be inhibited in the presence of histidine. This rules out the involvement of singlet oxygen in the cleavage activity. However, as seen in lanes 5–7, the cleavage activity was inhibited significantly in the presence of DMSO. This conclusively shows the involvement of the hydroxyl radical in the observed nuclease activity of the copper(II) complexes in the presence of peroxide. In summary, we have synthesized and characterized three new mononuclear mixed ligand copper(II) complexes having tridentate reduced Schiff bases and planar NN-donor heterocyclic bases. All the complexes show nuclease activity in the presence of hydrogen peroxide in converting supercoiled pUC19 DNA to its nicked circular form. The cleavage reactions are found to be inhibited in the presence of hydroxyl radical scavenger DMSO. All authors have none to declare. The authors thank the Head, Department of Chemistry, UDC, Trichy for providing laboratory facilities. “
“Copper is an essential trace element in plants and animals, but not some microorganisms.

An sp3 hybridized carbon atom was used as a probe atom to generat

An sp3 hybridized carbon atom was used as a probe atom to generate steric (Lennard–Jones potential) field energies and a charge of +1 to generate electrostatic (Coulombic potential) field energies. A distance dependent dielectric constant of 1.00 was used. The steric and electrostatic fields were truncated at +30.00 kcal mol−1. The similarity indices descriptors were calculated using the same lattice box employed for CoMFA calculations, using sp3 carbon as a probe atom with +1 charge, +1 hydrophobicity and +1 H-bond donor and +1 H-bond acceptor properties. A partial least squares regression was used

to generate a linear www.selleckchem.com/products/gsk1120212-jtp-74057.html relationship that correlates changes in the computed fields with changes in the corresponding experimental values of biological activity (pIC50) for the data set of ligands. Biological activity values of ligands

were used as dependent variables in a PLS statistical analysis.17 The column filtering value(s) was set to 2.0 kcal mol−1 to improve the signal-to-noise ratio by omitting those lattice points whose energy variations were below this threshold. Cross-validations were performed by the leave-one-out (LOO) procedure to determine the optimum number of components Proteasome inhibitor (ONC) and the coefficient q  2. The optimum number of components obtained is then used to derive the final QSAR model using all of the training set compounds with non-cross validation and to obtain the conventional correlation coefficient (r  2). To validate the CoMFA and CoMSIA derived models, the predictive ability for the test set of compounds (expressed as rpred2) was determined by using the following equation: rpred2=(SD−PRESS)/SD SD is the sum of the squared deviations between the biological activities of the test set

molecules and the mean activity of the training set compounds. PRESS is the sum of the squared deviation between the observed and the predicted activities of the test (-)-p-Bromotetramisole Oxalate set compounds. Since the statistical parameters were found to be the best for the model from the LOO method, it was employed for further predictions of the designed molecules. The 3D QSAR – CoMFA and CoMSIA analysis were carried out using small molecules like bezoxazol-5-yl acetic acid derivatives and 1,3-bis[4-(1H-bezimidazol-2-yl)-phenyl urea reported as potent inhibitors of heparanase9, 10 and 11 having precise IC50 value. A total of 43 molecules were used for derivation of model, these were divided into a training set of 33 molecules and test set of ten. The CoMFA and CoMSIA statistical analysis is summarized in Table 2. Statistical data shows qloo2 0.505 for CoMFA 0.540 for CoMSIA models, rncv2 of 0.972 and 0.988 for CoMFA and CoMSIA, respectively, which indicates a good internal predictive ability of the models. To test the predictive ability of the models, a test set of ten molecules excluded from the model derivation was used. The predictive correlation coefficient rpred2 of 0.556 for CoMFA and 0.

This conclusion rests partly on four assumptions: 1) ‘a delayed a

This conclusion rests partly on four assumptions: 1) ‘a delayed analgesic response does not seem plausible’; 2) ‘the included trials investigated similar treatment and dosing protocols’; 3) ‘results varied from exceptionally

effective to slightly harmful’; and 4) ‘conflicting results are difficult to explain’. First, the conflicting results in LLLT were explained recently in our neck pain review with 16 LLLT trials included (Chow et al 2009), where we found significant short-term pain relief at 19.4 mm (95% CI 9.7 to 29.2). In the current review, http://www.selleckchem.com/products/RO4929097.html two studies with 830 nm wavelengths used an extremely high dose of 54 Joules (Dundar et al 2007) and a very low dose of 0.9 Joules (Thorsen et al 1992), respectively. In our review, we found that an optimal dose was 5.9 Joules per point for this wavelength. The World Association for Laser Therapy (WALT) developed evidence-based guidelines with wavelength-specific doses and treatment protocols in 2005 (www.walt.nu/dosage-recommendations.html).

The WALT recommendation is to use a minimum 4 Joules at each of a minimum of four points in the cervical spine with 830 nm wavelength. The reviewers build the case that a pattern of delayed response did not appear consistently within trials measuring at different time-points. This statement is contradicted by the results in trials measuring BMS777607 at several time-points. One trial found no significant effect after 2 weeks of daily LLLT, but a significant delayed analgesic response at 14 weeks follow-up (Altan et al 2003). Another included trial reported a delayed analgesic response with a mean reduction in pain intensity of 10 mm over placebo (Gur et al 2004) from the end of LLLT until the one week follow-up. The last study with medium-term follow-up reported pain intensity to be as low as 9.46 mm (+/– 13.17) after LLLT, thus leaving no possibility to investigate possible delayed analgesic responses to LLLT (Ceccherelli et al 1989). Evidence of delayed analgesic responses

after intensive Rolziracetam regimens of LLLT has been reported for other diagnoses, too (Vasseljen et al 1992, Bjordal, 2007). For these reasons, the inclusion of a crossover trial (Thorsen et al 1992) in meta-analyses is not valid. The crossover trial was also interpreted as ‘slightly harmful’, although the original trial report dismissed this as an artefact caused by baseline imbalance after an exploratory statistical analysis. Balancing benefit and harm is always an important issue when drugs are concerned. We believe that the authors fail to address this issue properly when concluding that a combination drug (orphenadrine/paracetamol) is effective in the short-term. The actual drug branded as ‘Norgesic’ was only investigated in a single Norwegian trial lasting one week with no follow-up.

(17 5%) [5] This can most likely be explained by a potential sel

(17.5%) [5]. This can most likely be explained by a potential selection bias due to small patient numbers in these studies. The numerically decreasing prevalence of left dominance and codominant coronary dominance indicates a worse prognosis accompanying these variants. We hypothesized

that one explanation could be the larger myocardial area at risk in case of an acute myocardial infarction, especially in cases with left main stem involvement. Infarct size has been identified as a predictor for worse outcomes [10]. Other possible mechanisms explaining a worse prognosis might be coronary artery length and lumen diameter. It has been described that patients with a smaller lumen diameter of the RCA are prone to right ventricular ischemia [11]. We were not able to measure the diameter of the arteries in relation to coronary dominance. We hypothesize that patients with smaller-diameter HIF cancer LCX are prone to left ventricular ischemia in case of left dominance. It has also been observed that the left anterior descending artery (LAD) is longer and more frequently wraps around the apex in cases of left coronary dominance compared with right coronary dominance [12]. If this is also true for balanced systems, this could lead to an increased selleck screening library myocardial area at risk in case of a left

dominant or balanced system in a patient with a stenosis in the LAD. Myocardial bridging, in which a segment of an epicardial artery is covered by myocardium [13], appears to be more common in hearts with left coronary dominance. Potential clinical implications of myocardial bridging may vary from protection against atherosclerosis to systolic vessel compression and subsequent exercise-related myocardial ischemia. Therefore, the combined role of myocardial bridging and coronary dominance for the prognosis of the patients is difficult to elucidate. Finally, the relation between severity of CAD and coronary dominance has been studied. It was shown that patients with a right dominant system have a

slightly higher tendency toward three-vessel disease compared with the left-dominant patients [6]. These results could potentially weaken the relation between the left dominant and balanced systems and worse prognosis. However, this relation Non-specific serine/threonine protein kinase might be more complicated because, with left dominance, the left ventricle and a part of the right ventricle are supplied by the left coronary artery. Thus, atherosclerotic disease of the left coronary artery may be considered equivalent to three-vessel disease. We note that this relation requires confirmation in another cohort. Several limitations of our analysis deserve mention. First, although autopsy is routinely performed in our center, permission from relatives is required. This could potentially lead to selection bias. Second, the exclusion of nonevaluable coronary angiographs could have resulted in bias if one of the dominance variants is associated with more severe atherosclerosis.

Another limitation of the study is that those not educated within

Another limitation of the study is that those not educated within the state system were not involved with the NCMP and so it was not possible to consider those who were home or privately educated. There were

some differences in the characteristics of the sample analysed for this study compared with that analysed by Procter et al. (2008); notably Devon is much less ethnically OSI-744 diverse than Leeds. However, the similarity between our findings within any year, and those of Procter et al. (2008) would suggest that the methods employed were not sensitive to differing sample characteristics and hence the approach has some external validity. The problems associated with the reliability of league tables are well documented (Goldstein and Spiegelhalter, 1996 and Marshall and Spiegelhalter, 1998) and yet they remain in regular use in health, education and other areas of political interest (Marshall et al., 2004). Marshall and Spiegelhalter (1998) in examining in vitro fertilisation clinics found that ‘[e]ven when there

are substantial differences between institutions, ranks are extremely unreliable statistical summaries of performance and change in performance’ (p. 1701). Phenomena such as regression towards the mean are responsible for the instability of league tables and control chart methods have been proposed as a more robust alternative ( Marshall et al., 2004). Further work is needed to establish whether control charts could reliably identify schools which are ‘hot’ and ‘cold’ spots for obesity. However, the failure to find patterns among the rankings of individual schools over the five years studied indicates that individual

GSK1210151A datasheet schools were not differentially affecting pupil weight status, suggesting that school-based ‘hot’ and ‘cold’ spots for obesity may not exist and therefore are not appropriate targets for resources. In conclusion, this study found that estimates of individual school impacts on pupil weight status were small and labile across Endonuclease the five-year study period, refuting the hypothesis of a systematic differential impact of primary schools on pupil weight status. Furthermore, this suggests that ranking schools into ‘obesogenic league tables’ using current value-added methods is not a reliable approach to the identification of schools requiring targeted resources. As with previous studies (e.g. Harrison et al., 2011 and Townsend et al., 2012), only a small proportion of the variation in pupil weight status was found to be attributed to schools (Table 1). The marked changes in the impact of individual schools on pupil weight status from year-to-year bring into question whether the argument that small population level changes can reflect significant changes for individuals, proposed by Rose and Day (1990) is still a valid justification for school-based obesity prevention. It would appear that interventions intended to affect pupil weight status need to influence the wider environment and not just the school in isolation.

In addition, she was instrumental in bringing the specialty of ca

In addition, she was instrumental in bringing the specialty of cardiovascular pathology into the realm of diagnostic surgical pathology. And in that light, her influence on what so many cardiovascular pathologists, here and abroad, do every day lives on. “
“Figure options Download full-size image Download high-quality image (731 K) Download as PowerPoint slide Dr. Grover M. Hutchins died on April 27, 2010, following

an accident while traveling abroad with his wife Loretta MDV3100 price Hutchins. He was 77. Dr. Hutchins was born in Baltimore, MD, and graduated from Sparks High School in 1949. He served in the US Army (1952–1954) and received his B.A. from The Johns Hopkins University in 1957. Dr. Hutchins earned his M.D. at The Johns Hopkins University School of Medicine in 1961 and completed his residency in anatomic learn more pathology at The

Johns Hopkins Hospital in 1965. He was board certified in anatomic pathology and pediatric pathology. He served as assistant professor (1967–1973), associate professor (1973–1983), and professor of pathology (1983 until his death) at The Johns Hopkins University School of Medicine. Dr. Hutchins served as associate director of autopsy pathology from 1967 to 1976 and as director from 1976 to 1998. Dr. Hutchins was a prolific clinico-pathologic researcher, with over 500 papers published in peer-reviewed journals at the time of his death, as well as hundreds of academic presentations, more than 50 book next chapters, and

two books. He was a tireless champion of the autopsy as a quality assurance, educational, and research tool. Among over 50,000 autopsies performed at The Johns Hopkins Hospital since 1889, Dr. Hutchins personally examined reports and slides from over one quarter of the cases, as part of his research and educational work. Dr. Hutchins was an acclaimed professional educator and medical school teacher. He gave lectures on cardiac and pediatric pathology in the medical school pathology course, provided postgraduate training to pathology and other medical residents, and taught numerous courses to professional colleagues. Nearly all the peer-reviewed papers published during Dr. Hutchins’ career were collaborations involving medical colleagues, residents, and medical students. Many of the leading academic pathologists today were nurtured by collaborations with Dr. Hutchins. Dr. Hutchins had a few rules of academic collaboration, which he followed consistently. The face page for a research paper (title, authors, order of authors, work assignments, institutional affiliations, funding, etc.) was settled before substantial work began on the project. In this way, there would be no second guessing later in the project of who did what. The person writing the first draft of the research paper became the first author. Thus Dr. Hutchins gave hard-working junior colleagues the opportunity to be first author on a research study. Dr.