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Bogut A, Martinac M, Pravdić D, Karin M, Volarić M, Bevanda Glibo D, Babić E, Babić D, Bevanda M. Personality Traits and Health Related Quality of Life in Patients with Irritable Bowel Sindrome and Inflammatory Bowel Disease. Psychiatr Danub 2022; 34:53-62. [PMID: 36752243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
BACKGROUND Personality traits as alexithymia and type D personality may impair health related quality of life (HRQoL) in patients with irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD). Aim of this study was to evaluate personality traits in patients with IBS and IBD and their impact on HRQoL. MATERIALS AND METHODS The subjects (40 patients with IBS, 40 with IBD and 40 health control subjects) completed SF-36 questionnaire, TAS-20 and DS14 scale. RESULTS Patients with IBS and IBD had higher results on TAS-20 and DS14 scale when compared with healthy controls. Also IBS patients had higher scores than IBD patients. Higher scores on TAS-20 and DS14 scales in IBS and IBD patients correlate with lower HRQoL. HRQoL was poorer in IBS and IBD patients than in healthy control subjects. CONCLUSIONS Alexithymia and type D personality in IBS and IBD patients are associated with lower HRQoL and psychological interventions should be considered.
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Affiliation(s)
- Ante Bogut
- University Clinical Hospital Mostar, Internal Medicine Clinic with Dialysis Center, Bijeli brijeg b.b., 80000 Mostar, Bosnia and Herzegovina,
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Kordić M, Dragišić V, Šutalo N, Mišković J, Klupke Sarić I, Bogut A, Karin M. Duodenal Metastasis of Clear Cell Renal Carcinoma Presenting with Gastrointestinal Bleeding. Psychiatr Danub 2021; 33:97-98. [PMID: 34672278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Marko Kordić
- Department of Surgery, University Clinical Hospital Mostar, Bijeli brijeg b.b, 88000 Mostar, Bosnia and Herzegovina,
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Babić E, Bevanda M, Karin M, Volarić M, Bogut A, Bevanda Glibo D, Bevanda D, Šutalo N. Anxiety, Depression and Personality Types in Patients with Inflammatory Bowel Disease: Comparisons with Peptic Ulcer and the General Population. Psychiatr Danub 2021; 33:48-56. [PMID: 33857039 DOI: 10.24869/psyd.2021.48] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND To explore corellation of anxiety, depression ant type of personality in inflammatory bowel disease (IBD) and compare with peptic ulcer (PU). SUBJECTS AND METHODS In this study, prevalence of anxiety, depression and type of personality was investigated in 362 cases divided into three groups: 112 of IBD patients, 122 of peptic ulcer patients and 128 of control group who didn't have any gastrointestinal or psychic complaints. IBD and peptic ulcer diagnosis were established by standard diagnostic procedures (anamnesis, clinical manifestations, laboratory, endoscopy and biopsy in IBD and upper endoscopy in peptic ulcer). Anxiety and depression were established by Hamilton anxiety rating scale (HAM-A) and Hamilton rating test for depression (HAM-D). Type of A/B personality was established by Bortner scale and D type of personality by Denollet scale (DS14). RESULTS Anxiety was found in 47 (41.9%) and depression in 44 (38.3%) of a total of 112 IBD cases. In group with peptic ulcer anxiety was found in 40 (32.8%) and depression aalso in 40 (32.8%) of total 122 cases. In control group anxiety was diagnosed in 21 (16.4%) and depression in 20 (15.6%) of total 128 cases. Anxiety and depresson were significantly higher in both groups than in control group but anxiety and depression were significantly higher in IBD group than peptic ulcer group. D type of personality was statistically significant in peptic ulcer group. CONCLUSION Anxiety and depression in IBD and peptic ulcer cases have a greater prevalence compared to the normal population and surprisingly are higher in IBD than peptic ulcer group. D type of personality is associated with peptic ulcer.
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Affiliation(s)
- Emil Babić
- University of Mostar Clinical Hospital, Department of Gastroenterology and Hepatology, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina,
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Karin M, Bogut A, Romic I, Silovski H, Figl J, Pravdic D, Volaric M, Babic E, Bakula B, Romic R. Rare Complication of Necrotizing Pancreatitis: Extension of Retroperitoneal Abscess into Femoral Region. Acta Medica (Hradec Kralove) 2021; 64:46-49. [PMID: 33855959 DOI: 10.14712/18059694.2021.8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Distant abscesses are uncommon during the episode of acute pancreatitis (AP). However, these are possible sequalae of necrotizing pancreatitis and should be treated appropriately to prevent serious septic complications. We demonstrate a case of a 56-year-old male patient who presented with severe necrotizing pancreatitis and distant retroperitoneal abscess that reached femoral region and was detected on diagnostic imaging scans. Combination of surgical and supportive therapy was employed, and the patient recovered well with no permanent consequences. Our article highlights the importance of quick and accurate diagnosis and timely intervention in this rare type of pancreatitis complication.
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Affiliation(s)
- Maja Karin
- Internal Medicine Clinic with Dialysis Center, University Clinical Hospital Mostar, Bosnia and Herzegovina
| | - Ante Bogut
- Internal Medicine Clinic with Dialysis Center, University Clinical Hospital Mostar, Bosnia and Herzegovina
| | - Ivan Romic
- Surgery Department, University Clinical Hospital Zagreb, Croatia.
| | - Hrvoje Silovski
- Surgery Department, University Clinical Hospital Zagreb, Croatia
| | - Josip Figl
- Surgery Department, University Clinical Hospital Zagreb, Croatia
| | - Danijel Pravdic
- Internal Medicine Clinic with Dialysis Center, University Clinical Hospital Mostar, Bosnia and Herzegovina
| | - Mile Volaric
- Internal Medicine Clinic with Dialysis Center, University Clinical Hospital Mostar, Bosnia and Herzegovina
| | - Emil Babic
- Internal Medicine Clinic with Dialysis Center, University Clinical Hospital Mostar, Bosnia and Herzegovina
| | - Branko Bakula
- Surgery Department, University Clinical Hospital Sveti Duh, Zagreb, Croatia
| | - Renata Romic
- Family Medicine Department, Health centre Zagreb, Zagreb, Croatia
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Taugner J, Karin M, Kaesmann L, Eze C, Flörsch B, Guggenberger J, Tufman A, Belka C, Manapov F. 84P Impact of PTV on progression-free survival in inoperable stage III non-small cell lung cancer patients treated with chemoradioimmunotherapy. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01926-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Käsmann L, Gennen K, Taugner J, Eze C, Karin M, Roengvoraphoj O, Neumann J, Tufman A, Orth M, Reu S, Belka C, Manapov F. PO-0999: Deciphering the tumor microenviroment based on PD-L1 expression and CD8 + TILs density in LA-NSCLC. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01016-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Karin M, Bogut A, Hojsak I, Babić E, Volarić M, Bevanda M. Nutritional status and its effect on complications in patients with colorectal cancer. Wien Klin Wochenschr 2020; 132:431-437. [PMID: 32451819 DOI: 10.1007/s00508-020-01671-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/29/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Nutritional status is an important factor for predicting the risk of developing complications after a surgical procedure. Many nutritional assessments are used in clinical practice, but their role in predicting postoperative outcomes is unknown. Therefore, the aim of this study was to assess the utility of nutritional risk factors at the diagnosis of colorectal cancer (CRC) for predicting early postsurgical complications. METHODS This was a prospective observational study including 127 patients with CRC at diagnosis. Their preoperative nutritional status was analyzed by body mass index (BMI), triceps and subscapular skinfolds and two nutritional scales: the Patient-Generated Subjective Global Assessment (PG-SGA) and the Malnutrition Universal Screening Tool (MUST). The outcome variables, including postoperative complications, length of hospital stay and mortality, were analyzed. RESULTS Patients identified as malnourished by PG-SGA score had prolonged hospital stays (p = 0.01). The risk of infection was increased in older patients (hazard ratio, HR 1.12; 95% confidence interval, CI 1.04-1.21) but was not associated with nutritional status. Early wound dehiscence was increased in patients with higher BMI (HR 1.15; 95% CI 1.01-1.29), with higher subscapular skinfold thickness and increased age (HR 1.05; 95% CI 1.05-1.10). Postoperative mortality was not significantly associated with nutritional status. CONCLUSION Malnourished patients, as identified by the PG-SGA score, stayed longer in hospital than patients who were not malnourished, while increased BMI was recognized as a risk factor for wound dehiscence.
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Affiliation(s)
- Maja Karin
- Department of Gastroenterology and Hepatology, University Clinical Hospital Mostar, Bijeli Brijeg bb, Mostar, Bosnia and Herzegovina.
| | - Ante Bogut
- Department of Gastroenterology and Hepatology, University Clinical Hospital Mostar, Bijeli Brijeg bb, Mostar, Bosnia and Herzegovina
| | - Iva Hojsak
- Referral center for pediatric gastroenetrology and nutrition, Children's Hospital Zagreb, Klaićeva 16, Zagreb, Croatia
| | - Emil Babić
- Department of Gastroenterology and Hepatology, University Clinical Hospital Mostar, Bijeli Brijeg bb, Mostar, Bosnia and Herzegovina
| | - Mile Volarić
- Department of Gastroenterology and Hepatology, University Clinical Hospital Mostar, Bijeli Brijeg bb, Mostar, Bosnia and Herzegovina
| | - Milenko Bevanda
- Department of Gastroenterology and Hepatology, University Clinical Hospital Mostar, Bijeli Brijeg bb, Mostar, Bosnia and Herzegovina
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Taugner J, Käsmann L, Eze C, Dantes M, Roengvoraphoj O, Gennen K, Karin M, Tufman A, Niyazi M, Belka C, Manapov F. EP-1375 Heterogeneity score in inoperable stage III NSCLC patients treated with definitive chemoradiotherapy. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31795-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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9
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Taugner J, Käsmann L, Eze C, Dantes M, Roengvoraphoj O, Gennen K, Karin M, Tufman A, Belka C, Manapov F. Heterogeneity score in inoperable stage III non-small cell lung cancer patients treated with definitive chemoradiotherapy: A single centre analysis. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz067.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Käsmann L, Taugner J, Eze C, Roengvoraphoj O, Dantes M, Gennen K, Karin M, Tufman A, Belka C, Manapov F. The role of patient performance status and its changes before and after completion of multimodal treatment for inoperable stage III NSCLC. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz067.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Turkalj M, Erceg D, Martinuš M, Babić E, Karin M, Bevanda M. Diagnosis of perioperative anaphylaxis. Psychiatr Danub 2019; 31:50-59. [PMID: 30946718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Every agent used during the perioperative period may be involved and have the potential to trigger both allergic, IgE and non-IgE reaction as well as non-specific (non-allergic) reactions. In many cases, an allergic mechanism cannot be ruled out and systematic investigations should be tested of all drugs and agents the patient was exposed to prior to the reaction. The complexity of agents used for anaesthesia and surgery present challenges when attempting to identify the culprit drugs and select proper testing to better recognition of trigger. The diagnosis of preoperative anaphylactic or anaphylactoid reaction is clinical and based upon the presence of characteristic symptom and signs that begin suddenly and developed rapidly in most cases. Elevations of mast cell mediators such as tryptase and histamine in the blood can help to distinguish anaphylaxis from other disorders that present with similar clinical picture. The secondary investigations of adverse perioperative drug reactions are highly specialised and include skin testing, in vitro testing and in some cases challenge tests. Any suspected reaction during anaesthesia must be extensively investigated and these diagnostic tests should be done in specialised centres. The cooperation between anaesthesiologists and allergists is necessary to provide the necessary diagnostic tests to identify the responsible drug, to carry out prevention and to provide recommendations for future anesthetic procedures.
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Affiliation(s)
- Mirjana Turkalj
- Srebrnjak Children's Hospital, Srebrnjak 100, 10000 Zagreb, Croatia,
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Landžo E, Petrović J, Karin M, Tomić I, Pravdić D. Influence of the Type of Plateletpheresis on the Value of Corpuscular Elements in the Blood Donors. Psychiatr Danub 2017; 29 Suppl 4:835-840. [PMID: 29278632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
INTRODUCTION During the plateletpheresis procedure the number of trombocites in the donor's blood significantly decreases, and the levels of the other components of blood as hematocrit, hemoglobin, and leukocyte diminish as well. Influence of the type of procedure DN-CFCS and SN-ICFS it is one of the factors that affects the decrease of the levels of HCT, Hgb and WBC. In this study, our goal was to see the difference in the value of HCT, Hgb, WBC, and platelets after the plateletfphresis process between DN-CFCS and SN-IFCS on the same cell separator - Fenval AMICUS. DONORS AND METHODS The criteria for participation: men between age of 25-45. Two groups were formed. Group I 112 separation done with the method SN-ICFS and Group II 180 separation done with the method DN-CFCS. STATISTICAL ANALYSIS To confirm the statistical difference we used Student t-test for independent or dependent samples, as well as Mann-Whitney U test as non parametric alternative. The possibility of errors were accepted for α<0.05, and the difference between groups were accepted as statistical relevant for p<0.05. RESULTS Statistically significant lower values were observed of all researched parameters after separation for the donors on the equipement Amicus DN, and for donors on Amicus SN. A significant higher value of HCT before procedure was found in the AM DN group, in the researches of the other variables there were no significant differences. The resultst for the comparison of variables after procedure procedure for DN and SN procedure. A significant higher value of HCT and a significant higher level of Hgb, as well as a significant lower level of WBV after procedure in the AM DN group, while for the levels of PLT there were no significant differences. CONCLUSION On the decrease of the value of the observed parameters the type of procedure has an influence that means DN-CFCS or SN-IFCS, continuous or discontinuous flow.
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Affiliation(s)
- Elvedin Landžo
- Institute of Transfusion Medicine F BiH (ZZTMFBiH), Čekaluša 86, Sarajevo, Bosnia & Hercegovina,
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Bevanda DG, Čačić M, Mihaljević S, Bevanda M, Bogut A, Karin M. Allergic reactions and anesthesia. Psychiatr Danub 2017; 29 Suppl 4:778-786. [PMID: 29278624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The diagnosis of allergic reactions during anesthesia is difficult. For example, cardio-respiratory symptoms may be due to the accompanying pharmacological effects of anesthetics and poor interpretation of the reaction during anesthesia. It is important to distinguish whether a real allergic reaction has occurred. Accidents with anesthetics and muscle relaxants are observed more often than we expect. Proper anaphylaxis rarely occurs during anesthesia (1: 20000). Muscle relaxants are the most common causes, followed by latex, chlorhexidine, antibiotics and opioids. To confirm the diagnosis it is necessary to perform a larger number of blood and skin tests. Targeted diagnostic approach and therapy allow avoiding more difficult events. Anesthesia should be selected for those medications that have been tested. Additionally, patients should be premedicated with antihistaminics and systemic steroids, as the emergence of intolerance is not completely excluded by negative testing. There is no gold standard for testing, even if every method is precisely performed; there are always false positive and false negative results. When anaphylaxis appears, urgent approach is needed to provide the patient with appropriate treatment. It is necessary to act according to the established algorithms and treatment protocols. Many anesthesiologists will not ever see such a reaction, and very few will see more than one during their work life. Awareness of allergy in anesthesia is still insufficient.
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Affiliation(s)
- Danijela Glibo Bevanda
- University Clinical Hospital of Mostar, Department for Internal Medicine Kralja Tvrtka bb, 8000 Mostar, Bosnia and Herzegovina,
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Babić E, Bevanda M, Karin M, Volarić M, Bevanda D, Glibo DB, Bogut A. Correlation of clinical and endoscopic indices in IBD patients in University Clinical Hospital Mostar. Psychiatr Danub 2016; 28 Suppl 2:242-246. [PMID: 28035129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND To explore correlation between clinical and endoscopic indices in inflammatory bowel disease (IBD) patients. SUBJECTS AND METHODS There were 112 patients with inflammatory bowel disease. All patients with diagnosed IBD was established a degree of clinical and endoscopic disease activity. CDAI (Crohn's disease activity index) was used as clinical and SES-CD (Simplified Endoscopic Crohn Disease Index) as endoscopic index for Crohn's disease. For ulcerative colitis Truelov & Witts index was used as clinical and Baron as endoscopic activity index. Correlation of clinical and endoscopic indices were compared in Crohn disease (CD) and ulcerative colitis (UC). Patients were analyzed by clinical entities - CD and UC, according to sex, age, parameters of anemia, duration of disease and education. RESULTS In the total of 112 IBD patients there were 69 patients diagnosed as ulcerative colitis (61.6%) and 43 as Crohn's disease (38.4%). There were 58 (51.8%) women and 54 (48.2%) men. Comparison between endoscopic and clinical indices in CD and UC demonstrated no significant differences in ilnness activity. Endoscopic and clinical disease activity was associated with a higher inflammatory parameters (CRP and leucocytes, L) and lower parameters of hemoglobin (Hb) and MCV. CONCLUSION Our research has established a good correlation between clinical and endoscopic index of disease activity in the CB and UC in inflammation. Clinical indices can be used for monitoring inflammation.
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Affiliation(s)
- Emil Babić
- University of Mostar Clinical Hospital, Department of Gastroenterology and Hepatology, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina,
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Babić E, Bevanda M, Mimica M, Karin M, Volarić M, Bogut A, Barišić T, Pravdić D, Šutalo N. Prevalence of amebiasis in inflammatory bowel disease in University Clinical Hospital Mostar. Springerplus 2016; 5:1586. [PMID: 27652159 PMCID: PMC5025403 DOI: 10.1186/s40064-016-3261-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 09/07/2016] [Indexed: 12/02/2022]
Abstract
Aim To explore the prevalence of amebiasis in inflammatory bowel disease (IBD), Crohn’s disease and ulcerative colitis, in patients in Clinical hospital Mostar (Bosnia and Herzegovina, region of Herzegovina). Methods In this study, Entamoeba histolytica/dispar prevalence was investigated in fresh faeces by native microscopy and immunochromatographic rapid assay “RIDA®QUICK Entamoeba test”, in 119 cases of new found IBD patients, 84 of ulcerative colitis and 35 of Crohn’s disease and in control group who had also 119 patients who didn’t have any gastrointestinal complaints. IBD diagnosis was established by standard diagnostic procedures (anamnesis, clinical manifestations, laboratory, endoscopy and biopsy). Results Entamoeba histolytica/dispar were found in 19 (16.0 %) of a total of 119 cases, 12 (14.3 %) of the 84 patients with ulcerative colitis and 7 (20.0 %) of the 35 patients with Crohn’s disease. As for the 119 patients in the control group who had not any gastrointestinal complaints, 2 (1.7 %) patients were found to have E. histolytica/dispar in their faeces. Amoeba prevalence in the patient group was determined to be significantly higher in group with Crohn’s disease, ulcerative colitis and IBD total than in the control group (p < 0.001). Conclusion Ameba infections in patients with Crohn’s disease and ulcerative colitis, have a greater prevalence compared to the normal population.
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Affiliation(s)
- Emil Babić
- Department of Gastroenterology and Hepatology, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
| | - Milenko Bevanda
- Department of Gastroenterology and Hepatology, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
| | - Mladen Mimica
- Department of Gastroenterology and Hepatology, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
| | - Maja Karin
- Department of Gastroenterology and Hepatology, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
| | - Mile Volarić
- Department of Gastroenterology and Hepatology, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
| | - Ante Bogut
- Department of Gastroenterology and Hepatology, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
| | - Tatjana Barišić
- Department of Ginecology, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
| | - Danijel Pravdić
- Department of Gastroenterology and Hepatology, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
| | - Nikica Šutalo
- Department of Abdominal Surgery, University of Mostar Clinical Hospital, Bijeli Brijeg bb, 88000 Mostar, Bosnia and Herzegovina
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Mimica M, Tomić M, Babić E, Karin M, Bevanda M, Alfirević D, Godler Ğ, Karan D. Gastric cancer with bone marrow invasion presenting as severe thrombocytopenia. Turk J Gastroenterol 2015; 25 Suppl 1:229-30. [PMID: 25910314 DOI: 10.5152/tjg.2014.4660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Mladen Mimica
- Department of Internal medicine, University Clinic, Mostar, Bosnia and Herzegowina.
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Kobayashi K, Toguchida J, Karin M, Kato T. IKKβ in postnatal perichondrium remotely controls endochondral ossification of the growth plate through downregulation of MCP-5. Cell Death Differ 2014; 22:852-61. [PMID: 25526093 DOI: 10.1038/cdd.2014.192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 10/23/2014] [Accepted: 10/28/2014] [Indexed: 01/13/2023] Open
Abstract
IκB kinase β (IKKβ) is a catalytic subunit of the IKK complex, which activates nuclear factor-κB (NF-κB). Although its role in osteoclastogenesis is well established, the role of IKKβ in bone formation is poorly understood. Here, we report that conditional knockout of Ikkβ in limb bud mesenchymal cells results in the upregulation of monocyte chemoattractant protein-5 (MCP-5) in the perichondrium, which in turn inhibits the growth of longitudinal bone by compromising chondrocyte hypertrophy and increasing the apoptosis of chondrocytes within the growth plate. Contrary to expectations, IKKβ in cells of chondrocyte or osteoblast lineage was dispensable for bone growth. On the other hand, ex vivo experiments confirmed the role of MCP-5 in the growth of longitudinal bone. Furthermore, an in vitro study demonstrated that the action of IKKβ on MCP-5 is cell autonomous. Collectively, our results provide evidence for a previously unrecognized role of IKKβ in the regulation of the growth plate that is mediated through stimulation-independent downregulation of MCP-5 in the perichondrium.
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Affiliation(s)
- K Kobayashi
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - J Toguchida
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - M Karin
- Laboratory of Gene Regulation and Signal Transduction, Departments of Pharmacology and Pathology, School of Medicine, University of California San Diego, La Jolla, CA 92093-0723, USA
| | - T Kato
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
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Karin M, Bevanda M, Babić E, Mimica M, Bevanda-Glibo D, Volarić M, Bogut A, Pravdić D. Correlation between biochemical and histopathological parameters in patients with chronic hepatitis C treated with pegylated interferon and ribavirin. Psychiatr Danub 2014; 26 Suppl 2:364-369. [PMID: 25433316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM The main goal of this study was to compare the biochemical and histopathological findings in patients with sustained virological response (SVR) before and two years after the therapy with pegylated interferon α-2a and ribavirin in chronic hepatitis C. SUBJECTS AND METHODS The study was conducted at the Department of Internal Medicine and the Clinic for Infectious Diseases of the Clinical Hospital Mostar. The study included 48 patients whose treatment for chronic hepatitis C with pegylated interferon α-2a and ribavirin was finished two years prior to the achieved SVR at the end of the treatment. The main criterion for inclusion was a negative result of HCV RNA, determined by the RealTime HCV assay. After taking a history, physical examination, laboratory tests: AST, ALT, GGT, a liver biopsy were performed with the help of the ultrasound. The assessment of necroinflamatory score was determined by histologic activity index (HAI) score, and the stage of fibrosis according to Knodell's numerical score. RESULTS The values of AST and ALT levels were statistically significantly decreased after the successful treatment (p<0.001), as well as the value of HAI score (p=0.001) and the stage of fibrosis (p=0.010), in contrast to GGT (p=0.054). For the components of HAI score like focal necrosis (0.001) and portal inflammation (0.042) the result showed that they were significantly higher before the therapy, which was not true for the piecemeal (p=0.054) and confluated necrosis (p=0.078). The improvement of HAI score after therapy was found in 36 patients (75.0%), and 27 patients (56.2%) showed an improvement in the degree of fibrosis with the most common improvement of 1 degree (85.7%). One third of patients (31.3%) had the same result in the degree of fibrosis before and after the therapy. Before the treatment, a positive correlation was observed between ALT (p=0.039) and AST (p=0.04) with HAI, AST and the stage of fibrosis (p=0.04). In contrast, after the treatment the only correlation was observed between AST and the stage of fibrosis (p=0.042). CONCLUSION Virological and biochemical responses in patients with SVR may not reflect the histopathological effects of the treatment and therefore these patients should be monitored for the possible development of the liver cirrhosis and hepatocellular carcinoma.
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Affiliation(s)
- Maja Karin
- Departemnt of Internal Medicine, Clinical Hospital Mostar, Bijeli Brijeg b.b., Mostar, Bosnia and Herzegovina,
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Guma M, Sanchez-Lopez E, Lodi A, Garcia-Carbonell R, Tiziani S, Karin M, Lacal JC, Firestein GS. Choline kinase inhibition in rheumatoid arthritis. Ann Rheum Dis 2014; 74:1399-407. [PMID: 25274633 DOI: 10.1136/annrheumdis-2014-205696] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 09/13/2014] [Indexed: 01/20/2023]
Abstract
OBJECTIVES Little is known about targeting the metabolome in non-cancer conditions. Choline kinase (ChoKα), an essential enzyme for phosphatidylcholine biosynthesis, is required for cell proliferation and has been implicated in cancer invasiveness. Aggressive behaviour of fibroblast-like synoviocytes (FLS) in rheumatoid arthritis (RA) led us to evaluate whether this metabolic pathway could play a role in RA FLS function and joint damage. METHODS Choline metabolic profile of FLS cells was determined by (1)H magnetic resonance spectroscopy ((1)HMRS) under conditions of ChoKα inhibition. FLS function was evaluated using the ChoKα inhibitor MN58b (IC₅₀=4.2 μM). For arthritis experiments, mice were injected with K/BxN sera. MN58b (3 mg/kg) was injected daily intraperitoneal beginning on day 0 or day 4 after serum administration. RESULTS The enzyme is expressed in synovial tissue and in cultured RA FLS. Tumour necrosis factor (TNF) and platelet-derived growth factor (PDGF) stimulation increased ChoKα expression and levels of phosphocholine in FLS measured by Western Blot (WB) and metabolomic studies of choline-containing compounds in cultured RA FLS extracts respectively, suggesting activation of this pathway in RA synovial environment. A ChoKα inhibitor also suppressed the behaviour of cultured FLS, including cell migration and resistance to apoptosis, which might contribute to cartilage destruction in RA. In a passive K/BxN arthritis model, pharmacologic ChoKα inhibition significantly decreased arthritis in pretreatment protocols as well as in established disease. CONCLUSIONS These data suggest that ChoKα inhibition could be an effective strategy in inflammatory arthritis. It also suggests that targeting the metabolome can be a new treatment strategy in non-cancer conditions.
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Affiliation(s)
- M Guma
- Division of Rheumatology, Allergy and Immunology, UC San Diego School of Medicine, La Jolla, California, USA
| | - E Sanchez-Lopez
- Laboratory of Gene Regulation and Signal Transduction, UC San Diego School of Medicine, La Jolla, California, USA Departments of Pharmacology, UC San Diego School of Medicine, La Jolla, California, USA Pathology, UC San Diego School of Medicine, La Jolla, California, USA
| | - A Lodi
- Department of Nutritional Sciences & Dell Pediatric Research Institute, University of Texas at Austin, Austin, Texas, USA
| | - R Garcia-Carbonell
- Laboratory of Gene Regulation and Signal Transduction, UC San Diego School of Medicine, La Jolla, California, USA Departments of Pharmacology, UC San Diego School of Medicine, La Jolla, California, USA Pathology, UC San Diego School of Medicine, La Jolla, California, USA
| | - S Tiziani
- Department of Nutritional Sciences & Dell Pediatric Research Institute, University of Texas at Austin, Austin, Texas, USA
| | - M Karin
- Laboratory of Gene Regulation and Signal Transduction, UC San Diego School of Medicine, La Jolla, California, USA Departments of Pharmacology, UC San Diego School of Medicine, La Jolla, California, USA Pathology, UC San Diego School of Medicine, La Jolla, California, USA
| | - J C Lacal
- Division of Translational Oncology, Health Research Institute and University Hospital "Fundación Jiménez Díaz", Madrid, Spain
| | - G S Firestein
- Division of Rheumatology, Allergy and Immunology, UC San Diego School of Medicine, La Jolla, California, USA
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Abstract
Loss or silencing of tumor suppressors (TSs) promotes neoplastic transformation and malignant progression. To date, most work on TS has focused on their cell autonomous effects. Recent evidence, however, demonstrates an important noncell autonomous role for TS in the control of tumor-associated inflammation. We review evidence from clinical data sets and mouse model studies demonstrating enhanced inflammation and altered tumor microenvironment (TME) upon TS inactivation. We discuss clinical correlations between tumor-associated inflammation and inactivation of TS, and their therapeutic implications. This review sets forth the concept that TS can also suppress tumor-associated inflammation, a concept that provides new insights into tumor-host interactions. We also propose that in some cases the loss of TS function in cancer can be overcome through inhibition of the resulting inflammatory response, regardless whether it is a direct or an indirect consequence of TS loss.
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Affiliation(s)
- L Yang
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, NIH, 37 Convent Drive, Bethesda, MD, USA
| | - M Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology and Pathology, School of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, USA
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21
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Yang L, Karin M. Roles of tumor suppressors in regulating tumor-associated inflammation. Cell Death Differ 2014; 21:1677-86. [PMID: 25190145 PMCID: PMC4211367 DOI: 10.1038/cdd.2014.131] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/11/2014] [Accepted: 07/21/2014] [Indexed: 12/21/2022] Open
Abstract
Loss or silencing of tumor suppressors (TSs) promotes neoplastic transformation and malignant progression. To date, most work on TS has focused on their cell autonomous effects. Recent evidence, however, demonstrates an important noncell autonomous role for TS in the control of tumor-associated inflammation. We review evidence from clinical data sets and mouse model studies demonstrating enhanced inflammation and altered tumor microenvironment (TME) upon TS inactivation. We discuss clinical correlations between tumor-associated inflammation and inactivation of TS, and their therapeutic implications. This review sets forth the concept that TS can also suppress tumor-associated inflammation, a concept that provides new insights into tumor-host interactions. We also propose that in some cases the loss of TS function in cancer can be overcome through inhibition of the resulting inflammatory response, regardless whether it is a direct or an indirect consequence of TS loss.
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Affiliation(s)
- L Yang
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, NIH, 37 Convent Drive, Bethesda, MD, USA
| | - M Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology and Pathology, School of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, USA
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23
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Fogel S, Welch JW, Cathala G, Karin M. Gene amplification in yeast: CUP1 copy number regulates copper resistance. Curr Genet 2013; 7:347-55. [PMID: 24173415 DOI: 10.1007/bf00445874] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/1983] [Indexed: 11/25/2022]
Abstract
The CUP1 locus in yeast confers resistance to copper toxicity. We determined the molecular basis for copper resistance in three yeast strains, with differing degrees of resistance. Increased resistance to copper is associated with overproduction of a low molecular weight copper-binding protein, copper-chelatin. Increased chelatin synthesis results from amplification of the CUP1(r) gene and increased synthesis of the copper inducible mRNA. The copper resistance level of a given strain correlates directly with the gene copy number.Strains containing one copy and ten tandemly iterated copies of the CUP1 gene were studied. From the latter, a haploid strain with enhanced resistance was isolated following several selection cycles at elevated copper concentrations. This strain was disomic for chromosome VIII, the chromosome containing the CUP1 locus. The disomic chromosomes exhibit differential CUP1 gene amplification: 11 and 14 tandemly organized repeat units are found in the respective chromosome VIII homologues. We propose that the molecular mechanisms of gene amplification involve unequal sister chromatid exchange and intrachromosomal gene conversion, as well as disomy.
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Affiliation(s)
- S Fogel
- Department of Genetics, University of California, 94720, Berkeley, CA
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24
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Husic-Selimovic A, Vukobrat-Bijedic Z, Bevanda M, Mesihovic R, Zerem E, Ahmetagic S, Trbojevic S, Verhaz A, Kezic Z, Zildzic M, Bojanic J, Petrovic J, Stojic V, Ferhatovic M, Ibrahimpasic N, Mrdjen V, Zivlak N, Barac T, Bebek-Ivankovic H, Calkic L, Karin M, Dobrovoljski A, Rajic R, Skrbic M, Babic N, Bevanda-Glibo D. Diagnosis and treatment of chronic viral hepatitis B and C: doctrinary approach. Med Arch 2012; 66:56-69. [PMID: 22937696 DOI: 10.5455/medarh.2012.66.s56-s68] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Association of Gastroenterologists and Hepatologists of Bosnia and Herzegovina based on the experiences of domestic and foreign centers operating in the field of hepatology and accepted guidelines of the European and the U.S. Association for Liver Diseases adopted the consensus for the diagnosis and treatment of chronic viral hepatitis B and C. The guidelines are intended for specialists in gastroenterology and hepatology, and infectious diseases physicians working in primary health care and family medicine, but also other physicians who are confronted with this disease in their practice, with the aim of facilitating and shortening the diagnostic and treatment protocols of patients with chronic viral hepatitis B and C. This ensures faster, more efficient, more rational and cost-effective care of patients with hepatitis, with an emphasis on stopping the deterioration of liver disease to liver cirrhosis and eventually hepatocellular carcinoma. Key words: Chronic hepatitis B and
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Affiliation(s)
- Azra Husic-Selimovic
- Clinic for gastroenterohepatology, Clinical center of University of Sarajevo, B&H, 71000 Sarajevo Bolnicka 25
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25
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Karin M. 45 Control of Tumour Progression and Metastasis by Lymphocyte-Produced Cytokines. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70749-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Abstract
The NF-kappaB signaling pathway has particular relevance to several liver diseases including hepatitis (liver infection by Helicobacter, viral hepatitis induced by HBV and HCV), liver fibrosis and cirrhosis and hepatocellular carcinoma. Furthermore, the NF-kappaB signaling pathway is a potential target for development of hepatoprotective agents. Several types of drugs including: selective estrogen receptor modulators (SERMs), antioxidants, proteasome inhibitors, IKK inhibitors and nucleic acid-based decoys have been shown to interfere with NF-kappaB activity at different levels and may be useful for the treatment of liver diseases. However, NF-kappaB also plays an important hepatoprotective function that needs to be taken into consideration during development of new therapeutic regimens.
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Affiliation(s)
- B Sun
- Liver Transplantation Center of the First Affiliated Hospital and Cancer Center, Nanjing Medical University, Nanjing, Jiangsu Province, PR China
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Julius C, Heikenwalder M, Schwarz P, Marcel A, Karin M, Prinz M, Pasparakis M, Aguzzi A. Prion propagation in mice lacking central nervous system NF-κB signalling. J Gen Virol 2008; 89:1545-1550. [DOI: 10.1099/vir.0.83622-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Prions induce highly typical histopathological changes including cell death, spongiosis and activation of glia, yet the molecular pathways leading to neurodegeneration remain elusive. Following prion infection, enhanced nuclear factor-κB (NF-κB) activity in the brain parallels the first pathological changes. The NF-κB pathway is essential for proliferation, regulation of apoptosis and immune responses involving induction of inflammation. The IκB kinase (IKK) signalosome is crucial for NF-κB signalling, consisting of the catalytic IKKα/IKKβ subunits and the regulatory IKKγ subunit. This study investigated the impact of NF-κB signalling on prion disease in mouse models with a central nervous system (CNS)-restricted elimination of IKKβ or IKKγ in nearly all neuroectodermal cells, including neurons, astrocytes and oligodendrocytes, and in mice containing a non-phosphorylatable IKKα subunit (IKKα
AA/AA). In contrast to previously published data, the observed results showed no evidence supporting the hypothesis that impaired NF-κB signalling in the CNS impacts on prion pathogenesis.
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Affiliation(s)
- C. Julius
- Institute of Neuropathology, University Hospital of Zürich, Zürich, Switzerland
| | - M. Heikenwalder
- Institute of Neuropathology, University Hospital of Zürich, Zürich, Switzerland
| | - P. Schwarz
- Institute of Neuropathology, University Hospital of Zürich, Zürich, Switzerland
| | - A. Marcel
- Institute of Neuropathology, University Hospital of Zürich, Zürich, Switzerland
| | - M. Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California, San Diego, USA
| | - M. Prinz
- Department of Neuropathology, University of Freiburg, Freiburg, Germany
| | - M. Pasparakis
- Institute for Genetics, University of Cologne, Cologne, Germany
| | - A. Aguzzi
- Institute of Neuropathology, University Hospital of Zürich, Zürich, Switzerland
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29
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Abstract
Tumor markers can facilitate understanding molecular cell biology of neoplasia and provide potential targets for the diagnosis and insight for intervention. We here identify a novel murine gene, hepcarcin (hcn), encoding a 7-kb mRNA-like transcript. The gene appears to be the murine ortholog of the human alpha gene, that is, MALAT-1. The gene and homologs lack credible open reading frames, consistent with a highly conserved large noncoding RNA (ncRNA). In all nodules of procarcinogen-induced murine hepatocellular carcinomas (HCCs) and human HCCs, expression was markedly elevated compared to the uninvolved liver. Quantitative analyses indicated a 6-7-fold increased RNA level in HCCs versus uninvolved liver, advancing this as a molecule of interest. This ncRNA was overexpressed in all five non-hepatic human carcinomas analysed, consistent with a potential marker for neoplastic cells and potential participant in the molecular cell biology of neoplasia.
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Affiliation(s)
- R Lin
- Department of Immunology, The Scripps Research Institute, La Jolla, CA 92037, USA.
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30
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Abstract
The transcription factor nuclear factor (NF)-kappaB is well recognised as a pivotal player in osteoclastogenesis and inflammation induced bone loss. Here, the authors discuss their recent results, obtained using a genetic approach in mice, that indicate the importance of IKKbeta, and not IKKalpha, as a transducer of signals from receptor activator of NF-kappaB (RANK) to NF-kappaB. Ablation of IKKbeta results in lack of osteoclastogenesis and unresponsiveness of IKKbeta deficient mice to inflammation induced bone loss. In the need of a more effective therapy for the treatment of inflammatory diseases causing bone resorption, specific inhibition of IKKbeta represents a logical alternative strategy to the current therapies.
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Affiliation(s)
- M G Ruocco
- Laboratory of Gene Regulation and Signal Transduction, School of Medicine, University of California at San Diego, La Jolla, CA, USA
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31
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Lenneby C, Karin M, Ursula F, Carl-Johan L, Gunnar H, Ola B. P-411 High dose methotrexate (MTX) and interferons (IF) in malignant mesothelioma. A Scandinavian phase I study. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)80904-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Abstract
Given the prevalence and debilitating nature of chronic inflammatory diseases there is a never ending quest for identification of novel targets for the rational development of anti-inflammatory drugs. Although the major signalling pathway that controls inflammation associated gene expression is the one leading to activation of transcription factor NF-kappaB, considerable attention has also been given to mitogen activated protein kinases (MAPKs) as likely targets for development of novel anti-inflammatory therapeutics. Indeed, inhibitors targeting these pathways have been developed and preliminary preclinical data suggest that they exhibit anti-inflammatory activity. This report focuses on the possible mechanisms through which such inhibitors may interfere with inflammation and discusses the pros and cons of targeting MAPKs in the treatment of chronic inflammatory disease.
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Affiliation(s)
- M Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0723, USA.
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33
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Cao Y, Bonizzi G, Seagroves TN, Greten FR, Johnson R, Schmidt EV, Karin M. IKKalpha provides an essential link between RANK signaling and cyclin D1 expression during mammary gland development. Cell 2001; 107:763-75. [PMID: 11747812 DOI: 10.1016/s0092-8674(01)00599-2] [Citation(s) in RCA: 402] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
To identify functions of the IKKalpha subunit of IkappaB kinase that require catalytic activity, we generated an Ikkalpha(AA) knockin allele containing alanines instead of serines in the activation loop. Ikkalpha(AA/AA) mice are healthy and fertile, but females display a severe lactation defect due to impaired proliferation of mammary epithelial cells. IKKalpha activity is required for NF-kappaB activation in mammary epithelial cells during pregnancy and in response to RANK ligand but not TNFalpha. IKKalpha and NF-kappaB activation are also required for optimal cyclin D1 induction. Defective RANK signaling or cyclin D1 expression results in the same phenotypic effect as the Ikkalpha(AA) mutation, which is completely suppressed by a mammary specific cyclin D1 transgene. Thus, IKKalpha is a critical intermediate in a pathway that controls mammary epithelial proliferation in response to RANK signaling via cyclin D1.
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Affiliation(s)
- Y Cao
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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34
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Chen CY, Gherzi R, Ong SE, Chan EL, Raijmakers R, Pruijn GJ, Stoecklin G, Moroni C, Mann M, Karin M. AU binding proteins recruit the exosome to degrade ARE-containing mRNAs. Cell 2001; 107:451-64. [PMID: 11719186 DOI: 10.1016/s0092-8674(01)00578-5] [Citation(s) in RCA: 666] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Inherently unstable mammalian mRNAs contain AU-rich elements (AREs) within their 3' untranslated regions. Although found 15 years ago, the mechanism by which AREs dictate rapid mRNA decay is not clear. In yeast, 3'-to-5' mRNA degradation is mediated by the exosome, a multisubunit particle. We have purified and characterized the human exosome by mass spectrometry and found its composition to be similar to its yeast counterpart. Using a cell-free RNA decay system, we demonstrate that the mammalian exosome is required for rapid degradation of ARE-containing RNAs but not for poly(A) shortening. The mammalian exosome does not recognize ARE-containing RNAs on its own. ARE recognition requires certain ARE binding proteins that can interact with the exosome and recruit it to unstable RNAs, thereby promoting their rapid degradation.
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Affiliation(s)
- C Y Chen
- Department of Pharmacology, Laboratory of Gene Regulation and Signal Transduction, University of California, San Diego, La Jolla, CA 92093, USA
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35
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Abstract
The proinflammatory cytokine tumour necrosis factor-alpha (TNF-alpha) regulates immune responses, inflammation and programmed cell death (apoptosis). The ultimate fate of a cell exposed to TNF-alpha is determined by signal integration between its different effectors, including IkappaB kinase (IKK), c-Jun N-terminal protein kinase (JNK) and caspases. Activation of caspases is required for apoptotic cell death, whereas IKK activation inhibits apoptosis through the transcription factor NF-kappaB, whose target genes include caspase inhibitors. JNK activates the transcription factor c-Jun/AP-1, as well as other targets. However, the role of JNK activation in apoptosis induced by TNF-alpha is less clear. It is unknown whether any crosstalk occurs between IKK and JNK, and, if so, how it affects TNF-alpha-induced apoptosis. We investigated this using murine embryonic fibroblasts that are deficient in either the IKKbeta catalytic subunit of the IKK complex or the RelA/p65 subunit of NF-kappaB. Here we show that in addition to inhibiting caspases, the IKK/NF-kappaB pathway negatively modulates TNF-alpha-mediated JNK activation, partly through NF-kappaB-induced X-chromosome-linked inhibitor of apoptosis (XIAP). This negative crosstalk, which is specific to TNF-alpha signalling and does not affect JNK activation by interleukin-1 (IL-1), contributes to inhibition of apoptosis.
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Affiliation(s)
- G Tang
- Ben May Institute for Cancer Research, Committee on Cancer Biology, University of Chicago, 5841 S. Maryland Avenue, MC 6027, Chicago, Illinois 60637, USA
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36
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Abstract
Tumor necrosis factor alpha (TNFalpha) is a potent proinflammatory cytokine that plays an important role in immunity and inflammation, and in the control of cell proliferation, differentiation and apoptosis. TNFalpha is also the founding member of a still growing family of cytokines with diverse bioregulatory functions. Considerable progress has been made in understanding the molecular mechanisms that mediate TNFalpha-induced cellular responses. Binding of TNFalpha to its two receptors, TNFR1 and TNFR2, results in recruitment of signal transducers that activate at least three distinct effectors. Through complex signaling cascades and networks, these effectors lead to the activation of caspases and two transcription factors, AP-1 and NF-kappaB. Similar signaling mechanisms are likely to be used by other members of the TNF family. This review focuses on proteins that transduce the signals generated at TNF receptors to nuclear targets such as AP-1 and NF-kappaB.
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Affiliation(s)
- V Baud
- Laboratoire Oncogenèse, Différenciation et Transduction du Signal, CNRS UPR9079, Institut André Lwoff, 7 rue Guy Moquet, 94801, Villejuif, France
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Yuan M, Konstantopoulos N, Lee J, Hansen L, Li ZW, Karin M, Shoelson SE. Reversal of obesity- and diet-induced insulin resistance with salicylates or targeted disruption of Ikkbeta. Science 2001; 293:1673-7. [PMID: 11533494 DOI: 10.1126/science.1061620] [Citation(s) in RCA: 1392] [Impact Index Per Article: 60.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We show that high doses of salicylates reverse hyperglycemia, hyperinsulinemia, and dyslipidemia in obese rodents by sensitizing insulin signaling. Activation or overexpression of the IkappaB kinase beta (IKKbeta) attenuated insulin signaling in cultured cells, whereas IKKbeta inhibition reversed insulin resistance. Thus, IKKbeta, rather than the cyclooxygenases, appears to be the relevant molecular target. Heterozygous deletion (Ikkbeta+/-) protected against the development of insulin resistance during high-fat feeding and in obese Lep(ob/ob) mice. These findings implicate an inflammatory process in the pathogenesis of insulin resistance in obesity and type 2 diabetes mellitus and identify the IKKbeta pathway as a target for insulin sensitization.
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Affiliation(s)
- M Yuan
- Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
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38
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Senftleben U, Cao Y, Xiao G, Greten FR, Krähn G, Bonizzi G, Chen Y, Hu Y, Fong A, Sun SC, Karin M. Activation by IKKalpha of a second, evolutionary conserved, NF-kappa B signaling pathway. Science 2001; 293:1495-9. [PMID: 11520989 DOI: 10.1126/science.1062677] [Citation(s) in RCA: 1050] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In mammals, the canonical nuclear factor kappaB (NF-kappaB) signaling pathway activated in response to infections is based on degradation of IkappaB inhibitors. This pathway depends on the IkappaB kinase (IKK), which contains two catalytic subunits, IKKalpha and IKKbeta. IKKbeta is essential for inducible IkappaB phosphorylation and degradation, whereas IKKalpha is not. Here we show that IKKalpha is required for B cell maturation, formation of secondary lymphoid organs, increased expression of certain NF-kappaB target genes, and processing of the NF-kappaB2 (p100) precursor. IKKalpha preferentially phosphorylates NF-kappaB2, and this activity requires its phosphorylation by upstream kinases, one of which may be NF-kappaB-inducing kinase (NIK). IKKalpha is therefore a pivotal component of a second NF-kappaB activation pathway based on regulated NF-kappaB2 processing rather than IkappaB degradation.
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Affiliation(s)
- U Senftleben
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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39
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Kim JK, Kim YJ, Fillmore JJ, Chen Y, Moore I, Lee J, Yuan M, Li ZW, Karin M, Perret P, Shoelson SE, Shulman GI. Prevention of fat-induced insulin resistance by salicylate. J Clin Invest 2001; 108:437-46. [PMID: 11489937 PMCID: PMC209353 DOI: 10.1172/jci11559] [Citation(s) in RCA: 543] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Insulin resistance is a major factor in the pathogenesis of type 2 diabetes and may involve fat-induced activation of a serine kinase cascade involving IKK-beta. To test this hypothesis, we first examined insulin action and signaling in awake rats during hyperinsulinemic-euglycemic clamps after a lipid infusion with or without pretreatment with salicylate, a known inhibitor of IKK-beta. Whole-body glucose uptake and metabolism were estimated using [3-(3)H]glucose infusion, and glucose uptake in individual tissues was estimated using [1-(14)C]2-deoxyglucose injection during the clamp. Here we show that lipid infusion decreased insulin-stimulated glucose uptake and activation of IRS-1-associated PI 3-kinase in skeletal muscle but that salicylate pretreatment prevented these lipid-induced effects. To examine the mechanism of salicylate action, we studied the effects of lipid infusion on insulin action and signaling during the clamp in awake mice lacking IKK-beta. Unlike the response in wild-type mice, IKK-beta knockout mice did not exhibit altered skeletal muscle insulin signaling and action following lipid infusion. In summary, high-dose salicylate and inactivation of IKK-beta prevent fat-induced insulin resistance in skeletal muscle by blocking fat-induced defects in insulin signaling and action and represent a potentially novel class of therapeutic agents for type 2 diabetes.
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Affiliation(s)
- J K Kim
- Howard Hughes Medical Institute, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut 06536-8012, USA
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Han Z, Boyle DL, Chang L, Bennett B, Karin M, Yang L, Manning AM, Firestein GS. c-Jun N-terminal kinase is required for metalloproteinase expression and joint destruction in inflammatory arthritis. J Clin Invest 2001; 108:73-81. [PMID: 11435459 PMCID: PMC209341 DOI: 10.1172/jci12466] [Citation(s) in RCA: 578] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2001] [Accepted: 05/21/2001] [Indexed: 11/17/2022] Open
Abstract
Mitogen-activated protein kinase (MAPK) cascades are involved in inflammation and tissue destruction in rheumatoid arthritis (RA). In particular, c-Jun N-terminal kinase (JNK) is highly activated in RA fibroblast-like synoviocytes and synovium. However, defining the precise function of this kinase has been difficult because a selective JNK inhibitor has not been available. We now report the use of a novel selective JNK inhibitor and JNK knockout mice to determine the function of JNK in synoviocyte biology and inflammatory arthritis. The novel JNK inhibitor SP600125 (anthra[1,9-cd]pyrazol-6(2H)-one) completely blocked IL-1--induced accumulation of phospho-Jun and induction of c-Jun transcription in synoviocytes. Furthermore, AP-1 binding and collagenase mRNA accumulation were completely suppressed by SP600125. In contrast, complete inhibition of p38 had no effect, and ERK inhibition had only a modest effect. The essential role of JNK was confirmed in cultured synoviocytes from JNK1 knockout mice and JNK2 knockout mice, each of which had a partial defect in IL-1--induced AP-1 activation and collagenase-3 expression. Administration of SP600125 modestly decreased the rat paw swelling in rat adjuvant-induced arthritis. More striking was the near-complete inhibition of radiographic damage that was associated with decreased AP-1 activity and collagenase-3 gene expression. Therefore, JNK is a critical MAPK pathway for IL-1--induced collagenase gene expression in synoviocytes and in joint arthritis, indicating that JNK is an important therapeutic target for RA.
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Affiliation(s)
- Z Han
- Division of Rheumatology, Allergy and Immunology, University of California, San Diego, School of Medicine, La Jolla, California 92093, USA
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41
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Affiliation(s)
- M Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, University of California, San Diego, La Jolla 92093-0636, USA.
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42
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Devin A, Lin Y, Yamaoka S, Li Z, Karin M. The alpha and beta subunits of IkappaB kinase (IKK) mediate TRAF2-dependent IKK recruitment to tumor necrosis factor (TNF) receptor 1 in response to TNF. Mol Cell Biol 2001; 21:3986-94. [PMID: 11359906 PMCID: PMC87061 DOI: 10.1128/mcb.21.12.3986-3994.2001] [Citation(s) in RCA: 124] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The activation of IkappaB kinase (IKK) is a key step in the nuclear translocation of the transcription factor NF-kappaB. IKK is a complex composed of three subunits: IKKalpha, IKKbeta, and IKKgamma (also called NEMO). In response to the proinflammatory cytokine tumor necrosis factor (TNF), IKK is activated after being recruited to the TNF receptor 1 (TNF-R1) complex via TNF receptor-associated factor 2 (TRAF2). We found that the IKKalpha and IKKbeta catalytic subunits are required for IKK-TRAF2 interaction. This interaction occurs through the leucine zipper motif common to IKKalpha, IKKbeta, and the RING finger domain of TRAF2, and either IKKalpha or IKKbeta alone is sufficient for the recruitment of IKK to TNF-R1. Importantly, IKKgamma is not essential for TNF-induced IKK recruitment to TNF-R1, as this occurs efficiently in IKKgamma-deficient cells. Using TRAF2(-/-) cells, we demonstrated that the TNF-induced interaction between IKKgamma and the death domain kinase RIP is TRAF2 dependent and that one possible function of this interaction is to stabilize the IKK complex when it interacts with TRAF2.
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Affiliation(s)
- A Devin
- Department of Cell and Cancer Biology, Medicine Branch, Division of Clinical Sciences, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
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43
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Jiménez B, Volpert OV, Reiher F, Chang L, Muñoz A, Karin M, Bouck N. c-Jun N-terminal kinase activation is required for the inhibition of neovascularization by thrombospondin-1. Oncogene 2001; 20:3443-8. [PMID: 11423995 DOI: 10.1038/sj.onc.1204464] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2000] [Revised: 01/22/2001] [Accepted: 03/15/2001] [Indexed: 11/09/2022]
Abstract
Thrombospondin-1 (TSP-1) is a potent inhibitor of angiogenesis that acts directly on endothelial cells via the CD36 surface receptor molecule to halt their migration, proliferation, and morphogenesis in vitro and to block neovascularization in vivo. Here we show that inhibitory signals elicited by TSP-1 did not alter the ability of inducers of angiogenesis to activate p42 and p44 mitogen-activated protein kinase (MAPK). Rather, TSP-1 induced a rapid and transient activation of c-Jun N-terminal kinases (JNK). JNK activation by TSP-1 required engagement of CD36, as it was blocked by antagonistic CD36 antibodies and stimulated by short anti-angiogenic peptides derived from TSP-1 that act exclusively via CD36. TSP-1 inhibition of corneal neovascularization induced by bFGF was severely impaired in mice null for JNK-1, pointing to a critical role for this stress-activated kinase in the inhibition of neovascularization by TSP-1.
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Affiliation(s)
- B Jiménez
- Departamento de Bioquímica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
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Abstract
More than a decade ago our view of gene regulation by glucocorticoids (GC) and other steroid hormones underwent a dramatic change with the discovery of negative crosstalk (transcriptional interference) between the GC receptor (GCR) and transcription factor AP-1 (Jun:Fos). It was initially observed that induction of the collagenase type 1 gene, which is mediated through activation of AP-1 by growth factors and inflammatory cytokines, is repressed by GC. This repression was attributed to mutual negative interactions between AP-1 and GCR. Although the exact molecular mechanism underlying this particular case of transcriptional interference is yet to be determined, it has become clear that this and analogous interactions with other transcription factors (e.g. nuclear factor-kappaB) underlie the anti-inflammatory and immunosuppressive activity of GC. Recent studies conducted at the whole animal level indicate that the interactions between the AP-1 and GC signaling pathways are much more extensive. AP-1-related signaling via the Jun N-terminal kinases can lead to increased levels of circulating GC, which eventually down-modulate AP-1 activity via transcriptional interference. This negative feedback loop is likely to be of great importance for maintenance of homeostasis and regulation of stress responses, including acute and chronic inflammation.
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Affiliation(s)
- M Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, UCSD School of Medicine, 9500 Gilman Drive, La Jolla, California 92093-0636, USA.
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45
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Ojo-Amaize EA, Kapahi P, Kakkanaiah VN, Takahashi T, Shalom-Barak T, Cottam HB, Adesomoju AA, Nchekwube EJ, Oyemade OA, Karin M, Okogun JI. Hypoestoxide, a novel anti-inflammatory natural diterpene, inhibits the activity of IkappaB kinase. Cell Immunol 2001; 209:149-57. [PMID: 11446747 DOI: 10.1006/cimm.2001.1798] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Most inflammatory agents activate nuclear factor-kappaB (NF-kappaB), resulting in induction of genes coding for cytokines, chemokines, and enzymes involved in amplification and perpetuation of inflammation. Hypoestoxide (a bicyclo [9,3,1] pentadecane) is a diterpene from Hypoestes rosea, a tropical shrub in the family Acanthacea, several members of which are used in folk medicine in Nigeria. Here, we demonstrate that hypoestoxide (HE) abrogates the production of pro-inflammatory cytokines (IL-1beta, IL-6, and TNF-alpha) in lipopolysaccharide (LPS)-activated normal human peripheral blood mononuclear cells. Moreover, HE inhibits the production of nitric oxide (NO) by IL-1beta- or IL-17-stimulated normal human chondrocytes. In vivo, oral administration of HE to mice significantly ameliorated hind paw edema induced by antibodies to type II collagen plus LPS. Furthermore, topical administration of HE to mice also significantly inhibited phorbol ester-induced ear inflammation. The anti-inflammatory activity of HE may be due in part to its ability to inhibit NF-kappaB activation through direct inhibition of IkappaB kinase (IKK) activity. Thus, HE could be useful in treating various inflammatory diseases and may represent a prototype of a novel class of IKK inhibitors.
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Affiliation(s)
- E A Ojo-Amaize
- Immune Modulation, Incorporated, Bloomington, California 92316, USA.
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46
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Abstract
Members of the AP-1 transcription factor family, especially c-Jun and c-Fos, have long been known to mediate critical steps in the cellular response to ultraviolet (UV) irradiation. We sought to examine whether two newly discovered members of the AP-1 family, JDP-1 and JDP-2, also participate in the mammalian UV response. Here we report that JDP-2, but not JDP-1, is transiently induced upon UV challenge and that elevated levels of JDP-2 increase cell survival following UV exposure. This protective function of JDP-2 appears to be mediated through repression of p53 expression at the transcriptional level, via a conserved atypical AP-1 site in the p53 promoter.
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Affiliation(s)
- F Piu
- Department of Pharmacology, Laboratory of Gene Regulation and Signal Transduction, , University of California at San Diego, La Jolla, California 92093-0636, USA.
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Abstract
A plethora of physiological and pathological stimuli induce and activate a group of DNA binding proteins that form AP-1 dimers. These proteins include the Jun, Fos and ATF subgroups of transcription factors. Recent studies using cells and mice deficient in individual AP-1 proteins have begun to shed light on their physiological functions in the control of cell proliferation, neoplastic transformation and apoptosis. Above all such studies have identified some of the target genes that mediate the effects of AP-1 proteins on cell proliferation and death. There is evidence that AP-1 proteins, mostly those that belong to the Jun group, control cell life and death through their ability to regulate the expression and function of cell cycle regulators such as Cyclin D1, p53, p21(cip1/waf1), p19(ARF) and p16. Amongst the Jun proteins, c-Jun is unique in its ability to positively regulate cell proliferation through the repression of tumor suppressor gene expression and function, and induction of cyclin D1 transcription. These actions are antagonized by JunB, which upregulates tumor suppressor genes and represses cyclin D1. An especially important target for AP-1 effects on cell life and death is the tumor suppressor p53, whose expression as well as transcriptional activity, are modulated by AP-1 proteins.
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Affiliation(s)
- E Shaulian
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, University of California San Diego, 9500 Gilman Drive, La Jolla, California, CA 92093-0636, USA
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Delhase M, Karin M. The I kappa B kinase: a master regulator of NF-kappa B, innate immunity, and epidermal differentiation. Cold Spring Harb Symp Quant Biol 2001; 64:491-503. [PMID: 11232326 DOI: 10.1101/sqb.1999.64.491] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- M Delhase
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, University of California, San Diego, La Jolla, California 92093-0636, USA
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49
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Abstract
The IKKalpha and IKKbeta catalytic subunits of IkappaB kinase (IKK) share 51% amino-acid identity and similar biochemical activities: they both phosphorylate IkappaB proteins at serines that trigger their degradation. IKKalpha and IKKbeta differ, however, in their physiological functions. IKKbeta and the IKKgamma/NEMO regulatory subunit are required for activating NF-kappaB by pro-inflammatory stimuli and preventing apoptosis induced by tumour necrosis factor-alpha (refs 5,6,7,8,9,10,11). IKKalpha is dispensable for these functions, but is essential for developing the epidermis and its derivatives. The mammalian epidermis is composed of the basal, spinous, granular and cornified layers. Only basal keratinocytes can proliferate and give rise to differentiated derivatives, which on full maturation undergo enucleation to generate the cornified layer. Curiously, keratinocyte-specific inhibition of NF-kappaB, as in Ikkalpha-/- mice, results in epidermal thickening but does not block terminal differentiation. It has been proposed that the epidermal defect in Ikkalpha-/- mice may be due to the failed activation of NF-kappaB. Here we show that the unique function of IKKalpha in control of keratinocyte differentiation is not exerted through its IkappaB kinase activity or through NF-kappaB. Instead, IKKalpha controls production of a soluble factor that induces keratinocyte differentiation.
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Affiliation(s)
- Y Hu
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0636, USA
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50
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Arnaiz-Villena A, Karin M, Bendikuze N, Gomez-Casado E, Moscoso J, Silvera C, Oguz FS, Sarper Diler A, De Pacho A, Allende L, Guillen J, Martinez Laso J. HLA alleles and haplotypes in the Turkish population: relatedness to Kurds, Armenians and other Mediterraneans. Tissue Antigens 2001; 57:308-17. [PMID: 11380939 DOI: 10.1034/j.1399-0039.2001.057004308.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Turkish and Kurdish HLA profiles are studied for the first time. The comparative study of their allele frequencies, characteristic haplotypes, genetic distances with other Mediterraneans is complemented by neighbor-joining dendrograms and correspondence analyses. Turks, Kurds, Armenians, Iranians, Jews, Lebanese and other (Eastern and Western) Mediterranean groups seem to share a common ancestry: the older "Mediterranean" substratum. No sign of the postulated Indo-European (Aryan) invasion (1200 B.C.) is detected by our genetic analysis. It is concluded that this invasion, if occurred, had a relatively few invaders in comparison to the already settled populations, i.e. Anatolian Hittite and Hurrian groups (older than 2000 B.C.). These may have given rise to present-day Kurdish, Armenian and Turkish populations.
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Affiliation(s)
- A Arnaiz-Villena
- Department of Immunology and Molecular Biology, H. 12 de Octubre, Universidad Complutense, Madrid, Spain
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