gebhart/patrepeval huggingface dataset:
Postischemic Gene Transfer of Soluble Flt-1 Protects against Brain Ischemia with Marked Attenuation of Blood—Brain Barrier Permeability (2006)

Brain edema is a major and often mortal complication of brain ischemia. Vascular endothelial growth factor (VEGF) is also known as a potent vascular permeability factor and may play detrimental roles at the acute stage of brain infarction. Our goal in this study was to explore protective effects of gene transfer of soluble flt-1 (sFlt-1), a natural inhibitor of VEGF, on focal brain ischemia. Adenoviral vector encoding sFlt-1 or beta-galactosidase as control was injected into the lateral ventricle 90 mins after photochemical distal middle cerebral artery occlusion in male spontaneously hypertensive rats. The transduced sFlt-1 was released to the cerebrospinal fluid from the ventricular wall and significantly increased 6 h, 1 and 7 days after sFlt-1 transfection. One day after brain ischemia, sFlt-1 gene transfer significantly reduced infarct volume (by 35%), brain edema (by 35%), and blood-brain barrier permeability (Evans blue extravasation; by 69%) with diminished phosphorylation of focal adhesion kinase (FAKtyr397 and FAKtyr861) in the ischemic vessels. Seven days after ischemia, sFlt-1 gene transfer also significantly attenuated infarct volume (by 29%) and monocyte/macrophage infiltration (by 27%), although there were no reductions in angiogenesis by sFlt-1 overexpression. These results suggest that sFlt-1 gene therapy targeting brain edema in acute stage of brain ischemia may be useful for brain infarction.
Long COVID after breakthrough SARS-CoV-2 infection (2022)

The post-acute sequelae of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection-also referred to as Long COVID-have been described, but whether breakthrough SARS-CoV-2 infection (BTI) in vaccinated people results in post-acute sequelae is not clear. In this study, we used the US Department of Veterans Affairs national healthcare databases to build a cohort of 33,940 individuals with BTI and several controls of people without evidence of SARS-CoV-2 infection, including contemporary (n = 4,983,491), historical (n = 5,785,273) and vaccinated (n = 2,566,369) controls. At 6 months after infection, we show that, beyond the first 30 days of illness, compared to contemporary controls, people with BTI exhibited a higher risk of death (hazard ratio (HR) = 1.75, 95% confidence interval (CI): 1.59, 1.93) and incident post-acute sequelae (HR = 1.50, 95% CI: 1.46, 1.54), including cardiovascular, coagulation and hematologic, gastrointestinal, kidney, mental health, metabolic, musculoskeletal and neurologic disorders. The results were consistent in comparisons versus the historical and vaccinated controls. Compared to people with SARS-CoV-2 infection who were not previously vaccinated (n = 113,474), people with BTI exhibited lower risks of death (HR = 0.66, 95% CI: 0.58, 0.74) and incident post-acute sequelae (HR = 0.85, 95% CI: 0.82, 0.89). Altogether, the findings suggest that vaccination before infection confers only partial protection in the post-acute phase of the disease; hence, reliance on it as a sole mitigation strategy may not optimally reduce long-term health consequences of SARS-CoV-2 infection. The findings emphasize the need for continued optimization of strategies for primary prevention of BTI and will guide development of post-acute care pathways for people with BTI.
Retinal pigment epithelial cells in epiretinal membranes: an immunohistochemical study. (1984)

Immunohistochemical techniques were used to identify cells containing cytokeratins in sections or tissue-culture monolayers from ocular (reference) tissues and also from 22 epiretinal membranes obtained during closed microsurgery for macular pucker or massive preretinal retraction. Results of cytokeratin immunostaining in reference tissues indicated that this is a valuable means of determining the contribution and distribution of epithelial cells in epiretinal membranes, and that the epithelial cells in the membranes were probably derived from the retinal pigment epithelium. Epithelial cells were identified in 17 of the 22 epiretinal membranes, but they did not usually constitute the predominant cell type. We concluded that the fibroblasts or fibroblast-like cells thought to be responsible for the contraction of epiretinal membranes are seldom of retinal pigment epithelial origin. Biomicroscopic pigmentation of a membrane was shown to be a poor guide to its epithelial cell population.
Selective Detection of HbA1c Using Surface Enhanced Resonance Raman Spectroscopy (2010)

In the current work, we report on selective detection of HbA1c, a marker for glycemic control in diabetic patients, using surface enhanced resonance raman spectroscopy (SERRS). We found a characteristic band around 770-830 cm(-1) in the SERRS spectrum of HbA1c which was not present in the SERRS spectrum of HbA. To examine the contribution of glucosyl moiety to the characteristic SERRS band of HbA1c, we investigated SERRS spectra for nonenzymatically glycosylated HbA. We found that the SERRS spectral features are essentially identical for both HbA1c and nonenzymatically glycosylated HbA. Furthermore, addition of HbA into colloidal solution of silver nanoparticles (Ag NPs) resulted in the formation of large aggregates of Ag NPs and subsequent sedimentation. On the other hand, aggregation of Ag NPs was considerably low in the case of HbA1c. The differential effect of HbA and HbA1c on colloidal solution of Ag NPs, probably due to their difference in hydrophilicity, enabled us to separate them in a mixture. The separation was characterized by electrophoresis and SERRS analysis. Thus, colloidal solution of Ag NPs and SERRS would be a promising tool for the selective detection of HbA1c.
The role of interleukin 1 in acute neurodegeneration and stroke: pathophysiological and therapeutic implications. (1997)

The last 5 yr have witnessed significant changes in research direction and new discoveries about the mechanisms of neurodegeneration.Earlier studies on neuronal death focused on neurons, neuronal pathways, and neurotransmitters.Now similar interest is directed toward glia and vascular cells, peptides, and inflammatory processes in the brain.This research has already revealed several potential therapeutic targets for the treatment of acute brain damage such as stroke and brain injury.The brain fails to exhibit a classical "inflammatory response," generally characterized by early invasion of macrophages and leukocytes.Nevertheless, the brain can exhibit many of the hallmarks of inflammation when subjected to ischemia, injury, or infection.Such responses include edema, activation of resident phagocytic cells (microglia), invasion of circulating immune cells, and activation or induction of numerous inflammatory molecules including cyclooxygenase products, kinins, complement, acute phase proteins, and proinflammatory cytokines.Of the cytokines, we have identified IL-1 as a mediator of diverse forms of acute neurodegeneration.IL-1 has also been implicated in chronic neurological conditions.
Screening for type 2 diabetes. (2000)

Definitive studies of the effectiveness of screening for type 2 diabetes are currently not available. RCTs would be the best means to assess effectiveness, but several barriers prevent these studies from being conducted. Prospective observational studies may characterize some of the benefits of screening by creating screened and unscreened groups for comparison. The availability of better data systems and health services research techniques will facilitate such comparisons. Unfortunately, the interpretation of the results of such studies is extremely problematic. Several screening tests have been evaluated. Risk assessment questionnaires have generally performed poorly as stand-alone tests. Screening with biochemical tests performs better. Venous and capillary glucose measurements may perform more favorably than urinary glucose or HbA(1c) measurements, and measuring postprandial glucose levels may have advantages over measuring fasting levels. However, performance of all screening tests is dependent on the cutoff point selected. Unfortunately, there are no well-defined and validated cutoff points to define positive tests. A two-stage screening test strategy may assist with a more efficient use of resources, although such approaches have not been rigorously tested. The optimal interval for screening is unknown. Even though periodic, targeted, and opportunistic screening within the existing health care system seems to offer the greatest yield and likelihood of appropriate follow-up and treatment, much of the reported experience with screening appears to be episodic poorly targeted community screening outside of the existing health care system. Statistical models have helped to answer some of the key questions concerning areas in which there is lack of empirical data. Current models need to be refined with new clinical and epidemiological information, such as the UKPDS results (200). In addition, future models need to include better information on the natural history of the preclinical phase of diabetes. Data from ongoing clinical trials of screening and treatment of impaired glucose tolerance, such as the Diabetes Prevention Program, may eventually offer more direct evidence for early detection and treatment of asymptomatic hyperglycemia (201). It will be important to use comprehensive cardiovascular disease modules that assess the conjoint influence of glucose and cardiovascular risk factor reduction, information on QOL, and refined economic evaluations using common outcome measures (cost per life-year or QALY gained) (11,178,202-204). Such studies should consider all of the costs associated with a comprehensive screening program, including, at a minimum, the direct costs of screening, diagnostic testing, and care for patients with diabetes detected through screening. Finally, combinations of screening tests and different screening intervals should be evaluated within economic studies to allow selection of the optimal approach within the financial and resource limitations of the health care system.
Vitreous Surgery for Idiopathic Macular Holes (1991)

Idiopathic macular holes are generally considered an untreatable condition. We used modern vitrectomy techniques to evaluate two questions: (1) Is it possible to reattach the retina around the macular hole? (2) If it is reattached, will the patient's central vision improve? In 30 (58%) of 52 patients, we were able to reattach successfully the detached macula with our surgical procedure. In 22 (73%) of the 30 patients in whom the macula was successfully reattached, there was an improvement in visual acuity of two lines or better. In the 22 patients in whom reattachment of the macular hole was not obtained, there was no significant improvement in visual acuity. Thus, the overall success rate for improved vision postoperatively was 42% (22/52). Complications related to surgery were observed in eight patients (15%) early in our experience with this procedure and included increase in the size of the macular hole, mottling of the retinal pigmented epithelium, and a vascular occlusion. Our clinical observations indicate that the treatment of macular holes by vitrectomy may offer some promise for this otherwise untreatable condition. In patients in whom reattachment was successful, the technique used appeared to allow for clinically significant improvements in visual acuity. However, additional work on increasing surgical success and minimizing surgical complications, as well as a further understanding of the mechanism of retinal reattachment, is required before widespread use of this procedure for treating macular holes.
Materials characterization of ZrO2–SiO2 and HfO2–SiO2 binary oxides deposited by chemical solution deposition (2001)

The thermal stability, microstructure, and electrical properties of xZrO2⋅(100−x)SiO2 (ZSO) and xHfO2⋅(100−x)SiO2 (HSO) (x=15%, 25%, 50%, and 75%) binary oxides were evaluated to help assess their suitability as a replacement for silicon dioxide gate dielectrics in complementary metal–oxide–semiconductor transistors. The films were prepared by chemical solution deposition using a solution prepared from a mixture of zirconium, hafnium, and silicon butoxyethoxides dissolved in butoxyethanol. The films were spun onto SiOxNy coated Si wafers and furnace annealed at temperatures from 500 to 1200 °C in oxygen for 30–60 min. The microstructure and electrical properties of ZSO and HSO films were examined as a function of the Zr/Si and Hf/Si ratio and annealing temperature. The films were characterized by x-ray diffraction, mid- and far-Fourier transform infrared (FTIR), Rutherford backscattering spectroscopy, and Auger electron spectroscopy. At ZrO2 or HfO2 concentrations ⩾50%, phase separation and crystallization of tetragonal ZrO2 or HfO2 were observed at 800 °C. At ZrO2 or HfO2 concentrations ⩽ 25%, phase separation and crystallization of tetragonal ZrO2 or HfO2 were observed at 1000 °C. As the annealing temperature increased, a progressive change in microstructure was observed in the FTIR spectra. Additionally, the FTIR spectra suggest that HfO2 is far more disruptive of the silica network than ZrO2 even at HfO2 concentrations ⩽25%. The dielectric constants of the 25%, 50%, and 75% ZSO films were measured and were observed to be less than the linear combination of ZrO2 and SiO2 dielectric constants. The dielectric constant was also observed to increase with increasing ZrO2 content. The dielectric constant was also observed to be annealing temperature dependent with larger dielectric constants observed in nonphase separated films. The Clausius–Mossoti equation and a simple capacitor model for a phase separated system were observed to fit the data with the prediction that to achieve a dielectric constant larger than 10 doping concentrations of ZrO2 would have to be greater than 70%.
Aerosol Steroids as Primary Treatment of Mild Asthma (1991)

These are revolutionary times for patients with asthma. The disease is no longer considered the consequence of just bronchospasm or hyperactive airways. Rather, even in its mildest form asthma is considered an inflammatory disease, often described as "chronic desquamating eosinophilic bronchitis."1 , 2 The respiratory epithelium appears to bear the brunt of the inflammatory attack; it is vacuolated, and ciliated cells are shed into the bronchial lumen. Eosinophils not only become more numerous in the blood, the bronchial mucosa, and the sputum, but also damage the epithelium.3 Studies using bronchoalveolar lavage and endobronchial biopsy combined with the techniques of cellular and molecular . . .
Fluorescein Dye Improves Microscopic Evaluation and Counting of Demodex in Blepharitis With Cylindrical Dandruff (2007)

Addition of fluorescein solution after mounting further increases the proficiency of detecting and counting mites embedded in CD of epilated eyelashes.
Analysis of oil shale and petroleum source rock pyrolysis by triple quadrupole mass spectrometry: comparisons of gas evolution at the heating rate of 10.degree.C/min (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of oil shale and petroleum source rock pyrolysis by triple quadrupole mass spectrometry: comparisons of gas evolution at the heating rate of 10.degree.C/minJohn G. Reynolds, Richard W. Crawford, and Alan K. BurnhamCite this: Energy Fuels 1991, 5, 3, 507–523Publication Date (Print):May 1, 1991Publication History Published online1 May 2002Published inissue 1 May 1991https://pubs.acs.org/doi/10.1021/ef00027a025https://doi.org/10.1021/ef00027a025research-articleACS PublicationsRequest reuse permissionsArticle Views284Altmetric-Citations51LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Contraceptive Efficacy of a Depot Progestin and Androgen Combination in Men (2003)

WHO studies provided proof of concept for hormonal male contraception using a prototype androgen-alone regimen. Combined testosterone plus progestin regimens offer more practical promise, but no contraceptive efficacy studies have been completed. The objective of this study was to establish the proof of principle for depot hormonal androgen/progestin combination as a male contraceptive. We performed a contraceptive efficacy study of 55 healthy men in stable fertile relationships seeking a change in contraceptive method. Testosterone (four 200-mg implants, every 4 or 6 months) and 300 mg depot medroxyprogesterone acetate, im, every 3 months were administered. Once sperm output was suppressed (<1 million/ml for 2 consecutive months), men entered a 12-month contraceptive efficacy period, ceasing other contraception. The main outcome measure was contraceptive failure (pregnancy) rate. No pregnancies occurred in 426 person-months (35.5 person-years; 95% confidence limits for contraceptive failure rate, 0-8%/annum), superior to the first year failure rate of condoms, the only reversible male method. Sperm density fell rapidly, so 94% of men entered the efficacy phase by 3 months, with only 2 of 55 (3.6%) men not sufficiently suppressed to enter efficacy. A few men treated with testosterone implants at 6-month intervals demonstrated androgen deficiency symptoms and/or escape of gonadotropin and spermatogenic suppression between months 5 and 6; after a protocol amendment, all men receiving testosterone implants at 4-month intervals avoided androgen deficiency or loss of gonadotropin and sperm output suppression. Recovery was complete (median, 3.6 months to sperm reappearance and 5.0 months to 20 million sperm/ml) in all but one man with an incidental testicular disorder. Discontinuations were for protocol-related reasons (n = 15) or altered personal circumstances (n = 12), but there were no serious adverse effects related to drug exposure. The first male contraceptive efficacy study using a prototype depot androgen/progestin combination demonstrates high contraceptive efficacy with satisfactory short-term safety and recovery of spermatogenesis. Further studies of purpose-developed products are required to extend the overall safety and efficacy experience with depot androgen/progestin combinations, the most promising approach to hormonal male contraception.
Liposomes : rational design (1999)

Steric Stabilization: An Overview, Demetrios Papahadjopoulos Surface Chemistry of the Sterically Stabilized PEG-Liposome: General Principles, David Needham, Thomas J. McIntosh, and Doncho V. Zhelev Liposome Pharmacokinetics: Classical, Sterically Stabilized, Cationic Liposomes and Immunoliposomes, Theresa M. Allen and Darrin D. Stuart Functional Pleomorphism of Liposomal Gene Delivery Vectors: Lipoplex and Lipopolyplex, Song Li and Leaf Huang Antitumor Ether Lipids: Biological and Biochemical Effects, Robert Bittman and Gilbert Arthur The Antitumor Properties of Ceramide, David K. Perry, Alicja Bielawska, and Yusuf A. Hannun Antibodies to Cholesterol: Principles for Practical Application, Carl R. Alving Clinical Detection of Antiphospholipid Antibodies, Joyce Rauch Liposome-Mediated DNA Vaccination, Gregory Gregoriadis, Brenda McCormack, Yvonne Perrie, and Roghieh Saffie Applications of Liposomes with High Captured Volume, Walter R. Perkins Lyophilization of Liposomes, Thomas D. Madden and Nancy Boman Dermatological Applications of Liposomes, Thomas E. Redelmeier and Neil Kitson Preclinical Development Issues for Lipid-Based Pharmaceuticals, Christine E. Swenson and Lois E. Bolcsak Liposomal Doxorubicin: From Basics to Clinical Approval, Alberto Gabizon and Yechezkel Barenholz Clinical Evaluation of Liposomal Anthracyclines, Susana Campos and Charles L. Shapiro Liposomes and Acute Lung Injury, Brooks M. Hybertson and John E. Repine Liposome-Based Patents for Use in the Pharmaceutical Industry, Allen Bloom
Protection from photodamage by topical application of caffeine after ultraviolet irradiation (2007)

These findings support the concept that topical application of caffeine to mouse skin after UV irradiation promotes the deletion of DNA-damaged keratinocytes and may partially diminish photodamage as well as photocarcinogenesis.
How Much NMR Data Is Required To Determine a Protein–Ligand Complex Structure? (2005)

Here we present an NMR-based approach to solving protein-ligand structures. The procedure is guided by biophysical, biochemical, or knowledge-based data. The structures are mainly derived from ligand-induced chemical-shift perturbations (CSP) induced in the resonances of the protein and ligand-detected saturated transfer difference signals between ligands and selectively labeled proteins (SOS-NMR). Accuracy, as judged by comparison with X-ray results, depends on the nature and completeness of the experimental data. An experimental protocol is proposed that starts with calculations that make use of readily available chemical-shift perturbations as experimental constraints. If necessary, more sophisticated experimental results have to be added to improve the accuracy of the protein-ligand complex structure. The criteria for evaluation and selection of meaningful complex structures are discussed. These are exemplified for three complexes, and we show that the approach bridges the gap between theoretical docking approaches and complex NMR schemes for determining protein-ligand complexes; especially for relatively weak binders that do not lead to intermolecular NOEs.
Clinical implications of endothelial dysfunction (1998)

Endothelial dysfunction is increasingly recognized as an early event in the pathogenesis of cardiovascular disease. This observation is consistent with the growing appreciation of the role of endothelium in maintaining cardiovascular health. Endothelial dysfunction and coronary artery disease are both linked to hypertension, hypercholesterolemia, diabetes mellitus, and cigarette smoking. Modification of these conditions improves both endothelial function and coronary artery disease outcomes. Dietary and lifestyle modifications and antioxidant vitamin supplementation have a beneficial effect on endothelial function, as do angiotensin-converting enzyme inhibitors and lipid-lowering agents. Future studies will determine whether interventions that specifically target endothelial dysfunction can reduce rates of clinical disease.