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91.
Esophagogastric anastomosis in rats: Improved healing by BPC 157 and L-arginine,aggravated by L-NAME
Zeljko Djakovic Ivka Djakovic Vedran Cesarec Goran Madzarac Tomislav Becejac Goran Zukanovic Domagoj Drmic Lovorka Batelja Anita Zenko Sever Danijela Kolenc Alen Pajtak Nikica Knez Mladen Japjec Kresimir Luetic Dinko Stancic-Rokotov Sven Seiwerth Predrag Sikiric 《World journal of gastroenterology : WJG》2016,22(41):9127-9140
AIM To cure typically life-threatening esophagogastric anastomosis in rats, lacking anastomosis healing and sphincter function rescue, in particular. METHODS Because we assume esophagogastric fistulas represent a particular NO-system disability, we attempt to identify the benefits of anti-ulcer stable gastric pentadecapeptide BPC 157, which was in trials for ulcerative colitis and currently for multiple sclerosis, in rats with esophagocutaneous fistulas. Previously, BPC 157 therapies have promoted the healing of intestinal anastomosis and fistulas, and esophagitis and gastric lesions, along with rescued sphincter function. Additionally, BPC 157 particularly interacts with the NOsystem. In the 4 d after esophagogastric anastomosis creation, rats received medication(/kg intraperitoneallyonce daily: BPC 157(10 μg, 10 ng), L-NAME(5 mg), or L-arginine(100 mg) alone and/or combined or BPC 157(10 μg, 10 ng) in drinking water). For rats underwent esophagogastric anastomosis, daily assessment included progressive stomach damage(sum of the longest diameters, mm), esophagitis(scored 0-5), weak anastomosis(m L H2 O before leak), low pressure in esophagus at anastomosis and in the pyloric sphincter(cm H2O), progressive weight loss(g) and mortality. Immediate effect assessed blood vessels disappearance(scored 0-5) at the stomach surface immediately after anastomosis creation. RESULTS BPC 157(all regimens) fully counteracted the perilous disease course from the very beginning(i.e., with the BPC 157 bath, blood vessels remained present at the gastric surface after anastomosis creation) and eliminated mortality. Additionally, BPC 157 treatment in combination with L-NAME nullified any effect of L-NAME that otherwise intensified the regular course. Consistently, with worsening(with L-NAME administration) and amelioration(with L-arginine), either L-arginine amelioration prevails(attenuated esophageal and gastric lesions) or they counteract each other(L-NAME + L-arginine); with the addition of BPC 157(L-NAME + L-arginine + BPC 157), there was a marked beneficial effect. BPC 157 treatment for esophagogastric anastomosis, along with NOS-blocker L-NAME and/or NOS substrate L-arginine, demonstrated an innate NO-system disability(as observed with L-arginine effectiveness). BPC 157 distinctively affected corresponding events: worsening(obtained with L-NAME administration that was counteracted); or amelioration(L-arginine + BPC 157-rats correspond to BPC 157-rats).CONCLUSION Innate NO-system disability for esophagogastric anastomoses, including L-NAME-worsening, suggests that these effects could be corrected by L-arginine and almost completely eliminated by BPC 157 therapy. 相似文献
92.
Ilić I Randelović P Ilić R Dordević L Radojković D 《Vojnosanitetski pregled. Military-medical and pharmaceutical review》2008,65(6):488-491
BACKGROUND: Granular cell tumor (GCT) is a rare variant of mammary tumor beset with diagnostic dilemmas that may be resolved by using numerous, very complex, enzymohistochemical and immunohistochemical methods. CASE REPORTS: We reported three female patients 16, 21 and 65 years old, operated on for mammary tumor at the Surgical Clinic of the School of Medicine in Nis, over the period of thirty years, 1977 to 2007. During this period 14.022 mammary tumors were diagnosed, including these three cases. These tumors had benign characteristics, without associated tumors in other localizations. A typical histological feature of GCT was a granular cytoplasm in large ovoid cells, organized like nests or like a trabecular arrangement. The tumors were analyzed by sets of histochemical, enzymohistochemical, immunohistochemical methods as well as ultrastructural examination. Protein, S-100 neuron-specific enolase and vimentin expressed a diffuse and intensive immunohistochemical activity, while expression of estrogen and progesterone receptors, as well as HER-2 oncoprotein was negative. The ultrastructural analysis confirmed that the tumor cells were enriched by lysosomes and consequential disorganization of cytoplasm. CONCLUSION: The reported enzymo- and immunohistochemical combined methods provide a precise diagnosis and confirm the GCT's neural origin, which has been disputed for years. 相似文献
93.
94.
Annika Hausmann Boas Felmy Leo Kunz Sanne Kroon Dorothe Lisa Berthold Giverny Ganz Ioana Sandu Toshihiro Nakamura Nathan Sbastien Zangger Yang Zhang Tamas Dolowschiak Stefan Alexander Fattinger Markus Furter Anna Angelika Müller-Hauser Manja Barthel Katerina Vlantis Laurens Wachsmuth Jan Kisielow Luigi Tortola Danijela Heide Mathias Heikenwlder Annette Oxenius Manfred Kopf Timm Schroeder Manolis Pasparakis Mikael Erik Sellin Wolf-Dietrich Hardt 《The Journal of experimental medicine》2021,218(11)
Intestinal epithelial cell (IEC) NF-κB signaling regulates the balance between mucosal homeostasis and inflammation. It is not fully understood which signals tune this balance and how bacterial exposure elicits the process. Pure LPS induces epithelial NF-κB activation in vivo. However, we found that in mice, IECs do not respond directly to LPS. Instead, tissue-resident lamina propria intercrypt macrophages sense LPS via TLR4 and rapidly secrete TNF to elicit epithelial NF-κB signaling in their immediate neighborhood. This response pattern is relevant also during oral enteropathogen infection. The macrophage–TNF–IEC axis avoids responses to luminal microbiota LPS but enables crypt- or tissue-scale epithelial NF-κB responses in proportion to the microbial threat. Thereby, intercrypt macrophages fulfill important sentinel functions as first responders to Gram-negative microbes breaching the epithelial barrier. The tunability of this crypt response allows the induction of defense mechanisms at an appropriate scale according to the localization and intensity of microbial triggers. 相似文献
95.
Danijela Mataic 《Renal failure》2013,35(4):361-363
Calcific uremic arteriolopathy (or calciphylaxis) is a severe complication of renal failure characterized by subcutaneous calcification of the small arteries and tissue necrosis. We describe the case of a woman receiving continuous cycling peritoneal dialysis with calciphylaxis involving upper and lower extremities. After intolerance of intravenous sodium thiosulfate and limited intravenous access options, we administered sodium thiosulfate intraperitoneally and quantitated the amount of extra calcium removed. Intraperitoneal administration of sodium thiosulfate was well tolerated and led to removal of extra calcium with peritoneal dialysis. 相似文献
96.
Olivera Ciraj-Bjelac Dario Faj Damir Stimac Dusko Kosutic Danijela Arandjic Hrvoje Brkic 《European journal of radiology》2011,78(1):122-128
The purpose of this study is to investigate the need for and the possible achievements of a comprehensive QA programme and to look at effects of simple corrective actions on image quality in Croatia and in Serbia. The paper focuses on activities related to the technical and radiological aspects of QA. The methodology consisted of two phases. The aim of the first phase was the initial assessment of mammography practice in terms of image quality, patient dose and equipment performance in selected number of mammography units in Croatia and Serbia. Subsequently, corrective actions were suggested and implemented. Then the same parameters were re-assessed. Most of the suggested corrective actions were simple, low-cost and possible to implement immediately, as these were related to working habits in mammography units, such as film processing and darkroom conditions. It has been demonstrated how simple quantitative assessment of image quality can be used for optimisation purposes. Analysis of image quality parameters as OD, gradient and contrast demonstrated general similarities between mammography practices in Croatia and Serbia. The applied methodology should be expanded to larger number of hospitals and applied on a regular basis. 相似文献
97.
Maria Medvidovic-Grubisic Vasilije Stambolija Danijela Kolenc Jadranka Katancic Tamara Murselovic Ivna Plestina-Borjan Sanja Strbe Domagoj Drmic Ivan Barisic Aleksandra Sindic Sven Seiwerth Predrag Sikiric 《Inflammopharmacology》2017,25(4):439-449
Aim
Stable gastric pentadecapeptide BPC 157, administered before a high-dose magnesium injection in rats, might be a useful peptide therapy against magnesium toxicity and the magnesium-induced effect on cell depolarization. Moreover, this might be an NO-system-related effect. Previously, BPC 157 counteracts paralysis, arrhythmias and hyperkalaemia, extreme muscle weakness; parasympathetic and neuromuscular blockade; injured muscle healing and interacts with the NOS-blocker and NOS-substrate effects.Main methods
Assessment included magnesium sulfate (560 mg/kg intraperitoneally)-induced muscle weakness, muscle and brain lesions, hypermagnesemia, hyperkalaemia, increased serum enzyme values assessed in rats during and at the end of a 30-min period and medication (given intraperitoneally/kg at 15 min before magnesium) [BPC 157 (10 µg, 10 ng), l-NAME (5 mg), l-arginine (100 mg), alone and/or together]. In HEK293 cells, the increasing magnesium concentration from 1 to 5 mM could depolarize the cells at 1.75 ± 0.44 mV.Key findings
l-NAME + magnesium-rats and l-arginine + magnesium-rats exhibited worsened severe muscle weakness and lesions, brain lesions, hypermagnesemia and serum enzymes values, with emerging hyperkalaemia. However, l-NAME + l-arginine + magnesium-rats exhibited all control values and normokalaemia. BPC 157 abrogated hypermagnesemia and counteracted all of the magnesium-induced disturbances (including those aggravated by l-NAME or l-arginine). Thus, cell depolarization due to increasing magnesium concentration was inhibited in the presence of BPC 157 (1 µM) in vitro.Significance
BPC 157 likely counteracts the initial event leading to hypermagnesemia and the life-threatening actions after a magnesium overdose. In contrast, a worsened clinical course, higher hypermagnesemia, and emerging hyperkalaemia might cause both l-NAME and l-arginine to affect the same events adversely. These events were also opposed by BPC 157.98.
Per Wändell Axel C. Carlsson Xinjun Li Danijela Gasevic Johan Ärnlöv Martin J. Holzmann Jan Sundquist Kristina Sundquist 《European journal of epidemiology》2017,32(9):785-796
To study the association between country of birth and incident atrial fibrillation (AF) in several immigrant groups in Sweden. The study population included all adults (n = 3,226,752) aged 45 years and older in Sweden. AF was defined as having at least one registered diagnosis of AF in the National Patient Register. The incidence of AF in different immigrant groups, using Swedish-born as referents, was assessed by Cox regression, expressed in hazard ratios (HRs) and 95% confidence intervals (CI). All models were stratified by sex and adjusted for age, geographical residence in Sweden, educational level, marital status, and neighbourhood socioeconomic status. Compared to their Swedish-born counterparts, higher incidence of AF [HR (95% CI)] was observed among men from Bosnia 1.74 (1.56–1.94) and Latvia 1.29 (1.09–1.54), and among women from Iraq 1.96 (1.67–2.31), Bosnia 1.88 (1.61–1.94), Finland 1.14 (1.11–1.17), Estonia 1.14 (1.05–1.24) and Germany 1.08 (1.03–1.14). Lower incidence of AF was noted among men (HRs ≤ 0.60) from Iceland, Southern Europe (especially Greece, Italy and Spain), Latin America (especially Chile), Africa, Asia (including Iraq, Turkey, Lebanon and Iran), and among women from Nordic countries (except Finland), Southern Europe, Western Europe (except Germany), Africa, North America, Latin America, Iran, Lebanon and other Asian countries (except Turkey and Iraq). In conclusion, we observed substantial differences in incidence of AF between immigrant groups and the Swedish-born population. A greater awareness of the increased risk of AF development in some immigrant groups may enable for a timely diagnosis, treatment and prevention of its debilitating complications, such as stroke. 相似文献
99.
Mila Ljujic Sanja Mijatovic Mirna Z. Bulatovic Marija Mojic Danijela Maksimovic-Ivanic Dragica Radojkovic Aleksandra Topic 《Pathology oncology research : POR》2017,23(2):335-343
Increased circulating alpha-1-antitrypsin (AAT) correlates with cancer stage/aggressiveness, but its role in cancer biology is unclear. We revealed antagonistic effect of AAT to cisplatin-induced cytotoxicity in prostate (PC3) and melanoma (A375) cancer cell lines. Moreover, AAT abrogated cytotoxicity of MEK inhibitor U0126 in PC3 cell line. Weaker antagonistic effect of AAT on cytotoxicity of PI3/Akt and NF-kB inhibitors was also observed. In addition, cisplatin increased AAT gene expression in transfected PC3 cells. However, AAT derived from transfected PC3 cells did not antagonize cisplatin-induced cytotoxicity. In conclusion, these results suggest possible association between high circulating AAT and cisplatin resistance. 相似文献
100.
Katherine P. Rankin Andrea Salazar Maria Luisa Gorno-Tempini Marc Sollberger Stephen M. Wilson Danijela Pavlic Christine M. Stanley Shenly Glenn Michael W. Weiner Bruce L. Miller 《NeuroImage》2009,47(4):2005-2015
While sarcasm can be conveyed solely through contextual cues such as counterfactual or echoic statements, face-to-face sarcastic speech may be characterized by specific paralinguistic features that alert the listener to interpret the utterance as ironic or critical, even in the absence of contextual information. We investigated the neuroanatomy underlying failure to understand sarcasm from dynamic vocal and facial paralinguistic cues. Ninety subjects (20 frontotemporal dementia, 11 semantic dementia [SemD], 4 progressive non-fluent aphasia, 27 Alzheimer's disease, 6 corticobasal degeneration, 9 progressive supranuclear palsy, 13 healthy older controls) were tested using the Social Inference — Minimal subtest of The Awareness of Social Inference Test (TASIT). Subjects watched brief videos depicting sincere or sarcastic communication and answered yes–no questions about the speaker's intended meaning. All groups interpreted Sincere (SIN) items normally, and only the SemD group was impaired on the Simple Sarcasm (SSR) condition. Patients failing the SSR performed more poorly on dynamic emotion recognition tasks and had more neuropsychiatric disturbances, but had better verbal and visuospatial working memory than patients who comprehended sarcasm. Voxel-based morphometry analysis of SSR scores in SPM5 demonstrated that poorer sarcasm comprehension was predicted by smaller volume in bilateral posterior parahippocampi (PHc), temporal poles, and R medial frontal pole (pFWE < 0.05). This study provides lesion data suggesting that the PHc may be involved in recognizing a paralinguistic speech profile as abnormal, leading to interpretive processing by the temporal poles and right medial frontal pole that identifies the social context as sarcastic, and recognizes the speaker's paradoxical intentions. 相似文献