1
|
Mazhari A, Khajavi M, Mansouritorghabeh H. Rare Inherited Bleeding Disorders in The Middle East. Transfus Med Rev 2024; 38:150825. [PMID: 38579548 DOI: 10.1016/j.tmrv.2024.150825] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 03/07/2024] [Accepted: 03/12/2024] [Indexed: 04/07/2024]
Affiliation(s)
| | | | - Hassan Mansouritorghabeh
- Central Diagnostic laboratories, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
| |
Collapse
|
2
|
Zamani A, Khajavi M, Nazarpak MH, Solouk A, Atef M. Preliminary evaluation of fish cartilage as a promising biomaterial in cartilage tissue engineering. Ann Anat 2024; 253:152232. [PMID: 38402996 DOI: 10.1016/j.aanat.2024.152232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/02/2024] [Accepted: 02/20/2024] [Indexed: 02/27/2024]
Abstract
Fish cartilage is known as a valuable source of natural biomaterials due to its unique composition and properties. It contains a variety of bioactive components that contribute to its potential applications in different domains such as tissue engineering. The present work aimed to consider the properties of backbone cartilage from fish with a cartilaginous skeleton, including elasmobranch (reticulate whipray: Himantura uarnak and milk shark: Rhizoprionodon acutus) and sturgeon (beluga: Huso huso). The histomorphometric findings showed that the number of chondrocytes was significantly higher in reticulate whipray and milk shark compared to beluga (p < 0.05). The highest GAGs content was recorded in reticulate whipray cartilage compared to the other two species (p < 0.05). The cartilage from reticulate whipray and beluga showed higher collagen content than milk shark cartilage (p < 0.05), and the immunohistochemical assay for type II collagen (Col II) showed higher amounts of this component in reticulate whipray compared to the other two species. Young's modulus of the cartilage from reticulate whipray was significantly higher than that of milk shark and beluga (p < 0.05), while no significant difference was recorded between Young's modulus of the cartilage from milk shark and beluga. The gene expression of ACAN, Col II, and Sox9 showed that the cartilage-ECM from three species was able to induce chondrocyte differentiation from human adipose tissue-derived stem cells (hASCs). From these results, it can be concluded that the cartilage from three species, especially reticulate whipray, enjoys the appropriate biological properties and provides a basis for promoting its applications in the field of cartilage tissue engineering.
Collapse
Affiliation(s)
- Abbas Zamani
- Department of Fisheries, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran; New Technologies Research Center, Amirkabir University of Technology, Tehran, Iran.
| | - Maryam Khajavi
- Department of Fisheries, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran
| | | | - Atefeh Solouk
- Department of Biomaterial and Tissue Engineering, Faculty of Medical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Maryam Atef
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| |
Collapse
|
3
|
Zamani A, Khajavi M, Abedian Kenari A, Haghbin Nazarpak M, Solouk A, Esmaeili M, Gisbert E. Physicochemical and Biochemical Properties of Trypsin-like Enzyme from Two Sturgeon Species. Animals (Basel) 2023; 13:ani13050853. [PMID: 36899710 PMCID: PMC10000239 DOI: 10.3390/ani13050853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 01/12/2023] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 03/03/2023] Open
Abstract
This work aimed to determine the physicochemical and biochemical properties of trypsin from beluga Huso huso and sevruga Acipenser stellatus, two highly valuable sturgeon species. According to the results obtained from the methods of casein-zymogram and inhibitory activity staining, the molecular weight of trypsin for sevruga and beluga was 27.5 and 29.5 kDa, respectively. Optimum pH and temperature values for both trypsins were recorded at 8.5 and 55 °C by BAPNA (a specific substrate), respectively. The stability of both trypsins was well-preserved at pH values from 6.0 to 11.0 and temperatures up to 50 °C. TLCK and SBTI, two specific trypsin inhibitors, showed a significant inhibitory effect on the enzymatic activity of both trypsins (p < 0.05). The enzyme activity was significantly increased in the presence of Ca+2 and surfactants and decreased by oxidizing agents, Cu+2, Zn+2, and Co+2 (p < 0.05). However, univalent ions Na+ and K+ did not show any significant effect on the activity of both trypsins (p > 0.05). The results of our study show that the properties of trypsin from beluga and sevruga are in agreement with data reported in bony fish and can contribute to the clear understanding of trypsin activity in these primitive species.
Collapse
Affiliation(s)
- Abbas Zamani
- Fisheries Department, Faculty of Natural Resources and Environment, Malayer University, 4th km of Arak Road, Malayer 6574184621, Iran
- New Technologies Research Center, Amirkabir University of Technology, Tehran 1591634653, Iran
- Correspondence: ; Tel./Fax: +98-81-32355330
| | - Maryam Khajavi
- Fisheries Department, Faculty of Natural Resources and Environment, Malayer University, 4th km of Arak Road, Malayer 6574184621, Iran
| | - Abdolmohammad Abedian Kenari
- Department of Aquaculture, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor P.O. Box 46414-356, Iran
| | | | - Atefeh Solouk
- Department of Biomaterial and Tissue Engineering, Medical Engineering Faculty, Amirkabir University of Technology, Tehran 1591634311, Iran
| | - Mina Esmaeili
- Department of Fisheries, Faculty of Animal Sciences and Fisheries, Sari Agricultural Sciences and Natural Resources University, Sari 4818168984, Iran
| | - Enric Gisbert
- IRTA, Centre de la Rápita, Aquaculture Program, Crta. del Poble Nou Km 5.5, 43540 la Rápita, Spain
| |
Collapse
|
4
|
Roshandel G, Ferlay J, Ghanbari-Motlagh A, Partovipour E, Salavati F, Aryan K, Mohammadi G, Khoshaabi M, Sadjadi A, Davanlou M, Asgari F, Abadi H, Aghaei A, Ahmadi-Tabatabaei SV, Alizadeh-Barzian K, Asgari A, Asgari N, Azami S, Cheraghi M, Enferadi F, Eslami-Nasab M, Fakhery J, Farahani M, Farrokhzad S, Fateh M, Ghasemi A, Ghasemi-Kebria F, Gholami H, Golpazir A, Hasanpour-Heidari S, Hazar N, Hoseini-Hoshyar H, Izadi M, Jahantigh M, Jalilvand A, Jazayeri SM, Kazemzadeh Y, Khajavi M, Khalednejad M, Khanloghi M, Kooshki M, Madani A, Mirheidari M, Mohammadifar H, Moinfar Z, Mojtahedzadeh Y, Morsali A, Motidost-Komleh R, Mousavi T, Narooei M, Nasiri M, Niksiar S, Pabaghi M, Pirnejad H, Pournajaf A, Pourshahi G, Rahnama A, Rashidpoor B, Ravankhah Z, Rezaei K, Rezaianzadeh A, Sadeghi G, Salehifar M, Shahdadi A, Shahi M, Sharifi-Moghaddam F, Sherafati R, Soleimani A, Soltany-Hojatabad M, Somi MH, Yadolahi S, Yaghoubi-Ashrafi M, Zareiyan A, Poustchi H, Zendehdel K, Ostovar A, Janbabaei G, Raeisi A, Weiderpass E, Malekzadeh R, Bray F. Cancer in Iran 2008 to 2025: Recent incidence trends and short-term predictions of the future burden. Int J Cancer 2021; 149:594-605. [PMID: 33884608 DOI: 10.1002/ijc.33574] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/25/2021] [Accepted: 03/12/2021] [Indexed: 12/21/2022]
Abstract
Policymakers require estimates of the future number of cancer patients in order to allocate finite resources to cancer prevention, treatment and palliative care. We examine recent cancer incidence trends in Iran and present predicted incidence rates and new cases for the entire country for the year 2025. We developed a method for approximating population-based incidence from the pathology-based data series available nationally for the years 2008 to 2013, and augmented this with data from the Iranian National Population-based Cancer Registry (INPCR) for the years 2014 to 2016. We fitted time-linear age-period models to the recent incidence trends to quantify the future cancer incidence burden to the year 2025, delineating the contribution of changes due to risk and those due to demographic change. The number of new cancer cases is predicted to increase in Iran from 112 000 recorded cases in 2016 to an estimated 160 000 in 2025, a 42.6% increase, of which 13.9% and 28.7% were attributed to changes in risk and population structure, respectively. In terms of specific cancers, the greatest increases in cases are predicted for thyroid (113.8%), prostate (66.7%), female breast (63.0%) and colorectal cancer (54.1%). Breast, colorectal and stomach cancers were the most common cancers in Iran in 2016 and are predicted to remain the leading cancers nationally in 2025. The increasing trends in incidence of most common cancers in Iran reinforce the need for the tailored design and implementation of effective national cancer control programs across the country.
Collapse
Affiliation(s)
- Gholamreza Roshandel
- Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran
- Iranian National Population-Based Cancer Registry Secretariat, Cancer Office, Deputy of Health, Ministry of Health, Tehran, Iran
| | - Jacques Ferlay
- Cancer Surveillance Branch, International Agency for Research on Cancer (IARC), World Health Organization (WHO), Lyon, France
| | - Ali Ghanbari-Motlagh
- National Cancer Management Committee, Deputy of Health, Ministry of Health, Tehran, Iran
| | - Elham Partovipour
- Iranian National Population-Based Cancer Registry Secretariat, Cancer Office, Deputy of Health, Ministry of Health, Tehran, Iran
| | - Fereshteh Salavati
- Iranian National Population-Based Cancer Registry Secretariat, Cancer Office, Deputy of Health, Ministry of Health, Tehran, Iran
| | - Kimia Aryan
- Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran
| | - Gohar Mohammadi
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mostafa Khoshaabi
- Iranian National Population-Based Cancer Registry Secretariat, Cancer Office, Deputy of Health, Ministry of Health, Tehran, Iran
| | - Alireza Sadjadi
- Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Fereshteh Asgari
- Iranian National Population-Based Cancer Registry Secretariat, Cancer Office, Deputy of Health, Ministry of Health, Tehran, Iran
| | - Hakimeh Abadi
- Booshehr Cancer Registry, Booshehr University of Medical Sciences, Booshehr, Iran
| | - Abbas Aghaei
- Cancer and Immunology Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | | | | | - Abbasali Asgari
- Shahrekoord Cancer Registry, Shahrekoord University of Medical Sciences, Shahrekoord, Iran
| | - Noorali Asgari
- Zabol Cancer Registry, Zabol University of Medical Sciences, Zabol, Iran
| | - Soheyla Azami
- Saveh Cancer Registry, Saveh Faculty of Medical Sciences, Saveh, Iran
| | - Maria Cheraghi
- Cancer Research Center, Cancer Registry Section, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Floria Enferadi
- Khorasan-North Cancer Registry, Khorasan-North University of Medical Sciences, Bojnord, Iran
| | | | - Jila Fakhery
- Khoy Cancer Registry, Khoy Faculty of Medical Sciences, Khoy, Iran
| | - Mohsen Farahani
- Arak Cancer Registry, Arak University of Medical Sciences, Arak, Iran
| | - Solmaz Farrokhzad
- Qazvin Cancer Registry, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Mansooreh Fateh
- Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, Shahrood, Iran
| | - Ali Ghasemi
- Birjand Cancer Registry, Birjand University of Medical Sciences, Birjand, Iran
| | - Fatemeh Ghasemi-Kebria
- Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran
| | - Hajar Gholami
- Ardabil Cancer Registry, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Arash Golpazir
- Kermanshah Cancer Registry, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Susan Hasanpour-Heidari
- Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran
| | - Narjes Hazar
- Department of Community Medicine, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | | | - Mohsen Izadi
- Gerash Cancer Registry, Gerash Faculty of Medical Sciences, Gerash, Iran
| | - Mahdi Jahantigh
- Zahedan Cancer Registry, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Ahmad Jalilvand
- Zanjan Cancer Registry, Zanjan University of Medical Sciences, Zanjan, Iran
| | | | - Yasan Kazemzadeh
- Khomein Cancer Registry, Khomein Faculty of Medical Sciences, Khomein, Iran
| | - Maryam Khajavi
- Dezful Cancer Registry, Dezful University of Medical Sciences, Dezful, Iran
| | - Maryam Khalednejad
- Alborz Cancer Registry, Alborz University of Medical Sciences, Karaj, Iran
| | - Marziyeh Khanloghi
- Nishabour Cancer Registry, Nishabour Faculty of Medical Sciences, Nishabour, Iran
| | - Maryam Kooshki
- Lorestan Cancer Registry, Lorestan University of Medical Sciences, Khoramabad, Iran
| | - Amineh Madani
- Abadan Cancer Registry, Abadan Faculty of Medical Sciences, Abadan, Iran
| | - Mahdi Mirheidari
- Qom Cancer Registry, Qom University of Medical Sciences, Qom, Iran
| | | | - Zeinab Moinfar
- Tehran Cancer Registry, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Ali Morsali
- Asadabad Cancer Registry, Asadabad Faculty of Medical Sciences, Asadabad, Iran
| | | | - Tahereh Mousavi
- Babol Cancer Registry, Babol University of Medical Sciences, Babol, Iran
| | - Maboobeh Narooei
- Iranshahr Cancer Registry, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Mohammad Nasiri
- Shooshtar Cancer Registry, Shooshtar Faculty of Medical Sciences, Shooshtar, Iran
| | - Sharareh Niksiar
- Hamedan Cancer Registry, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Mehdi Pabaghi
- Larestan Cancer Registry, Larestan Faculty of Medical Sciences, Lar, Iran
| | - Habibollah Pirnejad
- Patient Safety Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Azadeh Pournajaf
- Ilam Cancer Registry, Ilam University of Medical Sciences, Ilam, Iran
| | - Gita Pourshahi
- Torbatejam Cancer Registry, Torbatejam Faculty of Medical Sciences, Torbatejam, Iran
| | - Amir Rahnama
- Rafsanjan Cancer Registry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Bahman Rashidpoor
- Yasoj Cancer Registry, Yasoj University of Medical Sciences, Yasoj, Iran
| | - Zahra Ravankhah
- Esfahan Cancer Registry, Esfahan University of Medical Sciences, Esfahan, Iran
| | - Khadijeh Rezaei
- Mashhad Cancer Registry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Abbas Rezaianzadeh
- Shiraz Cancer Registry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gholamreza Sadeghi
- Guilan Cancer Registry, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammad Salehifar
- Torbateheidarieh Cancer Registry, Torbateheidarieh University of Medical Sciences, Torbatheidarieh, Iran
| | - Athareh Shahdadi
- Jiroft Cancer Registry, Jiroft University of Medical Sciences, Jiroft, Iran
| | - Mehraban Shahi
- Hormozgan Cancer Registry, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | | | - Roya Sherafati
- Sarab Cancer Registry, Sarab Faculty of Medical Sciences, Sarab, Iran
| | - Ali Soleimani
- Maragheh Cancer Registry, Maragheh Faculty of Medical Sciences, Maragheh, Iran
| | | | - Mohammad-Hossein Somi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sohrab Yadolahi
- Semnan Cancer Registry, Semnan University of Medical Sciences, Semnan, Iran
| | | | - Aliakbar Zareiyan
- Jahrom Cancer Registry, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Hossein Poustchi
- Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Kazem Zendehdel
- Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran
| | - Afshin Ostovar
- Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Alireza Raeisi
- Deputy Minister of Health, Ministry of Health, Tehran, Iran
| | - Elisabete Weiderpass
- Office of the Director, International Agency for Research on Cancer (IARC), Lyon, France
| | - Reza Malekzadeh
- Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Freddie Bray
- Cancer Surveillance Branch, International Agency for Research on Cancer (IARC), World Health Organization (WHO), Lyon, France
| |
Collapse
|
5
|
Khajavi M, Izadpanah M, Eslami K, Kouti L. Design, Implementation and Evaluation of a Student Mentoring Program for Pharmacy Students Based on Facilitation by the Pharmacist Assistant Website at the School of Pharmacy of Ahvaz Jundishapur University of Medical Sciences. jpc 2021. [DOI: 10.18502/jpc.v9i2.6608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: Mentoring is a learning and training process in which a qualified person with more experience (mentor) consults a person with fewer skills or less experience (mentee). The purpose of this study was to design, implement and evaluate the student mentoring program for entry Pharmacy students of academic year 2019-2020 (as mentees) and to use a website to communicate with students in order to use new methods of communication.
Methods: In this project, 2015, 2016 and 2017 entry students were used as mentors. After assessing the needs of senior students, the mentoring program was designed and after revision, mentors and mentees were introduced to each other. Considering the outbreak of Corona virus in the middle of the project, the Pharmacist Assistant website was designed as a virtual learning platform and made accessible to students for keeping the mentoring members in touch with each other.
Results: Preliminary results of a needs assessment showed that students prefer being consulted by senior students in the times of challenge. A survey of mentees showed that all mentees were satisfied with participating in the program and recommended its implementation, and almost half of them believed that the web design was successful in educating students during the pandemic.
Conclusion: Due to the high satisfaction of the mentees with the mentoring program and their familiarity with the academic challenges before facing them, running mentoring programs can be very functional and helpful in Schools of Pharmacy. In the case of coronavirus pandemic, one way to prevent damage to the mentoring program and to keep the mentor and mentees in touch is to design a virtual platform such as the Pharmacist Assistant website.
Collapse
|
6
|
Khajavi M, Hajimoradloo A, Zandi M, Pezeshki-Modaress M, Bonakdar S, Zamani A. Fish cartilage: A promising source of biomaterial for biological scaffold fabrication in cartilage tissue engineering. J Biomed Mater Res A 2021; 109:1737-1750. [PMID: 33738960 DOI: 10.1002/jbm.a.37169] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 10/08/2020] [Revised: 02/17/2021] [Accepted: 03/09/2021] [Indexed: 12/16/2022]
Abstract
Here, engineered cartilage-like scaffold using an extracellular matrix (ECM) from sturgeon fish cartilage provided a chondroinductive environment to stimulate cartilaginous matrix synthesis in human adipose stem cells (hASCs). Three dimensional porous and degradable fish cartilage ECM-derived scaffold (FCS) was produced using a protocol containing chemical decellularization, enzymatic solubilization, freeze-drying and EDC-crosslinking treatments and the effect of different ECM concentrations (10, 20, 30, and 40 mg/ml) on prepared scaffolds was investigated through physical, mechanical and biological analysis. The histological and scanning electron microscopy analysis revealed the elimination of the cell fragments and a 3-D interconnected porous structure, respectively. Cell viability assay displayed no cytotoxic effects. The prepared porous constructs of fish cartilage ECM were seeded with hASCs for 21 days and compared to collagen (Col) and collagen-10% hyaluronic acid (Col-HA) scaffolds. Cell culture results evidenced that the fabricated scaffolds could provide a proper 3-D structure to support the adhesion, proliferation and chondrogenic differentiation of hASCs considering the synthesis of specific proteins of cartilage, collagen type II (Col II) and aggrecan (ACAN). Based on the results of the present study, it can be concluded that the porous scaffold derived from fish cartilage ECM possesses an excellent potential for cartilage tissue engineering.
Collapse
Affiliation(s)
- Maryam Khajavi
- Department of Fisheries, Faculty of Fisheries and Environmental Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Abdolmajid Hajimoradloo
- Department of Fisheries, Faculty of Fisheries and Environmental Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Mojgan Zandi
- Department of Biomaterials, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | | | - Shahin Bonakdar
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
| | - Abbas Zamani
- Department of Fisheries, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran
| |
Collapse
|
7
|
Ravangard AH, Houshmand M, Khajavi M, Naghiha R. Performance and Cecal Bacteria Counts of Broilers Fed Low Protein Diets With and Without a Combination of Probiotic and Prebiotic. Rev Bras Cienc Avic 2017. [DOI: 10.1590/1806-9061-2016-0319] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
8
|
Zurita AJ, Khajavi M, Wu HK, Tye L, Huang X, Kulke MH, Lenz HJ, Meropol NJ, Carley W, DePrimo SE, Lin E, Wang X, Harmon CS, Heymach JV. Circulating cytokines and monocyte subpopulations as biomarkers of outcome and biological activity in sunitinib-treated patients with advanced neuroendocrine tumours. Br J Cancer 2015; 112:1199-205. [PMID: 25756398 PMCID: PMC4385961 DOI: 10.1038/bjc.2015.73] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [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] [Revised: 12/23/2014] [Accepted: 01/29/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Sunitinib is approved worldwide for treatment of advanced pancreatic neuroendocrine tumours (pNET), but no validated markers exist to predict response. This analysis explored biomarkers associated with sunitinib activity and clinical benefit in patients with pNET and carcinoid tumours in a phase II study. METHODS Plasma was assessed for vascular endothelial growth factor (VEGF)-A, soluble VEGF receptor (sVEGFR)-2, sVEGFR-3, interleukin (IL)-8 (n=105), and stromal cell-derived factor (SDF)-1α (n=28). Pre-treatment levels were compared between tumour types and correlated with response, progression-free (PFS), and overall survival (OS). Changes in circulating myelomonocytic and endothelial cells were also analysed. RESULTS Stromal cell-derived factor-1α and sVEGFR-2 levels were higher in pNET than in carcinoid (P=0.003 and 0.041, respectively). High (above-median) baseline SDF-1α was associated with worse PFS, OS, and response in pNET, and high sVEGFR-2 with longer OS (P⩽0.05). For carcinoid, high IL-8, sVEGFR-3, and SDF-1α were associated with shorter PFS and OS, and high IL-8 and SDF-1α with worse response (P⩽0.05). Among circulating cell types, monocytes showed the largest on-treatment decrease, particularly CD14+ monocytes co-expressing VEGFR-1 or CXCR4. CONCLUSIONS Interleukin-8, sVEGFR-3, and SDF-1α were identified as predictors of sunitinib clinical outcome. Putative pro-tumorigenic CXCR4+ and VEGFR-1+ monocytes represent novel candidate markers and biologically relevant targets explaining the activity of sunitinib.
Collapse
Affiliation(s)
- A J Zurita
- University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1374 Houston, TX, USA
| | - M Khajavi
- University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1374 Houston, TX, USA
| | - H-K Wu
- University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1374 Houston, TX, USA
| | - L Tye
- Pfizer Inc., La Jolla, CA, USA
| | - X Huang
- Pfizer Inc., La Jolla, CA, USA
| | - M H Kulke
- Dana-Farber Cancer Institute, Boston, MA, USA
| | - H-J Lenz
- USC Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - N J Meropol
- University Hospitals Case Medical Center Seidman Cancer Center, Case Comprehensive Cancer Center and Case Western Reserve University, Cleveland, OH, USA
| | | | | | - E Lin
- University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1374 Houston, TX, USA
| | - X Wang
- University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1374 Houston, TX, USA
| | | | - J V Heymach
- University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1374 Houston, TX, USA
| |
Collapse
|
9
|
Zurita AJ, Jonasch E, Wang X, Khajavi M, Yan S, Du DZ, Xu L, Herynk MH, McKee KS, Tran HT, Logothetis CJ, Tannir NM, Heymach JV. A cytokine and angiogenic factor (CAF) analysis in plasma for selection of sorafenib therapy in patients with metastatic renal cell carcinoma. Ann Oncol 2012; 23:46-52. [PMID: 21464158 PMCID: PMC3276320 DOI: 10.1093/annonc/mdr047] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 01/20/2011] [Accepted: 01/31/2011] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND We investigated cytokines and angiogenic factors (CAFs) in patients with metastatic renal cell carcinoma (mRCC) treated in a randomized phase II clinical trial of sorafenib versus sorafenib+ interferon-α (IFN-α) that yielded no differences in progression-free survival (PFS). We aimed to link the CAF profile to PFS and select candidate predictive and prognostic markers for further study. METHODS The concentrations of 52 plasma CAFs were measured pretreatment (n = 69), day 28, and day 56 using multiplex bead arrays and enzyme-linked immunosorbent assay. We investigated the association between baseline levels of CAFs with PFS and posttreatment changes. RESULTS Unsupervised CAF clustering analysis revealed two distinct mRCC patient groups with elevated proangiogenic or proinflammatory mediators. A six-marker baseline CAF signature [osteopontin, vascular endothelial growth factor (VEGF), carbonic anhydrase 9, collagen IV, VEGF receptor-2, and tumor necrosis factor-related apoptosis-inducing ligand] correlated with PFS benefit (hazard ratio 0.20 versus 2.25, signature negative versus positive, respectively; P = 0.0002). While changes in angiogenic factors were frequently attenuated by the sorafenib+ IFN combination, most key immunomodulatory mediators increased. CONCLUSIONS Using CAF profiling, we identified two mRCC patient groups, a candidate plasma signature for predicting PFS benefit, and distinct marker changes occurring with each treatment. This platform may provide valuable insights into renal cell carcinoma biology and the molecular consequences of targeted therapies.
Collapse
Affiliation(s)
- A J Zurita
- Departments of Genitourinary Medical Oncology.
| | - E Jonasch
- Departments of Genitourinary Medical Oncology
| | | | - M Khajavi
- Departments of Genitourinary Medical Oncology
| | - S Yan
- Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, USA
| | - D Z Du
- Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, USA
| | - L Xu
- Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, USA
| | - M H Herynk
- Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, USA
| | - K S McKee
- Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, USA
| | - H T Tran
- Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, USA
| | | | - N M Tannir
- Departments of Genitourinary Medical Oncology
| | - J V Heymach
- Thoracic/Head and Neck Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, USA
| |
Collapse
|
10
|
Zurita AJ, Heymach J, Khajavi M, Tye L, Huang X, Kulke M, Lenz H, Meropol NJ, Carley W, DePrimo SE, Harmon CS. Circulating protein and cellular biomarkers of sunitinib in patients with advanced neuroendocrine tumors. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4079] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
11
|
Zurita AJ, Khajavi M, Mulders P, Yan S, McKee KS, Tran HT, Pike L, Mookerjee B, Jurgensmeier J, Heymach J. Cytokine and angiogenic factor (CAF) profiling for identification of markers associated with response to cediranib in metastatic renal cell carcinoma (mRCC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.7_suppl.362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
362 Background: Cediranib is a highly potent and selective signaling inhibitor of vascular endothelial growth factor (VEGF) receptors−1, −2, −3 and c-Kit. In a phase II trial, patients (pts) with mRCC were randomized 3:1 to treatment with cediranib or placebo to primarily assess the difference in change in tumor size at 12 weeks. Cediranib resulted in a significant reduction in tumor size vs. placebo (Mulders et al. ESMO. 2009). Here we investigated soluble biomarkers in serum and concentration changes during treatment. Methods: Pts received cediranib 45 mg/day PO or placebo for the first 12 weeks on treatment. At that time (or upon progression if earlier), treatment was unblinded and pts on placebo were given the option of receiving cediranib. Serum was collected from 61 pts at baseline (BL; cediranib 46, placebo 15), from 50 pts on day (D) 28, and from 45 pts on D84. Multiplex bead suspension arrays and ELISA were used to measure CAF concentrations including VEGF, placental growth factor (PlGF), sVEGFR-2, PDGFbb, HGF, MMP-9, multiple chemokines and interleukins (IL). The objectives of this exploratory analysis were to assess whether baseline CAFs were associated with changes in tumor size after 12 weeks of treatment and whether CAF levels changed while on treatment. Results: Of 39 CAFs available at BL, lower than median (‘low') concentrations of IL-10, VEGF, PlGF, stem cell factor (SCF), and monokine-induced by interferon-gamma (MIG) were associated with larger decreases in tumor size than high concentrations (independent of treatment arm), whereas the opposite trend was observed for IL-5 and TRAIL. Consistent with inhibition of VEGF signaling, cediranib treatment resulted in changes over time in VEGF (increase), sVEGFR-2 (decrease) and PlGF (increase) concentrations. In addition, SCF, a c-Kit ligand and M-CSF decreased, while VCAM-1 and TRAIL increased during cediranib treatment. Conclusions: Candidate CAFs associated with response to cediranib in mRCC such as IL-10 and VEGF were identified. Patients treated with cediranib showed distinct CAF changes compared with placebo. These results require independent validation in a larger trial. [Table: see text]
Collapse
Affiliation(s)
- A. J. Zurita
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - M. Khajavi
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - P. Mulders
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - S. Yan
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - K. S. McKee
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - H. T. Tran
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - L. Pike
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - B. Mookerjee
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - J. Jurgensmeier
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| | - J. Heymach
- University of Texas M. D. Anderson Cancer Center, Houston, TX; Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands; AstraZeneca, Alderley Park, Macclesfield, United Kingdom; AstraZeneca, Wilmington, DE
| |
Collapse
|
12
|
Ben-Shachar S, Khajavi M, Withers MA, Shaw CA, van Bokhoven H, Brunner HG, Lupski JR. Dominant versus recessive traits conveyed by allelic mutations - to what extent is nonsense-mediated decay involved? Clin Genet 2009; 75:394-400. [PMID: 19236432 DOI: 10.1111/j.1399-0004.2008.01114.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Mutations in ROR2, encoding a receptor tyrosine kinase, can cause autosomal recessive Robinow syndrome (RRS), a severe skeletal dysplasia with limb shortening, brachydactyly, and a dysmorphic facial appearance. Other mutations in ROR2 result in the autosomal dominant disease, brachydactyly type B (BDB1). No functional mechanisms have been delineated to effectively explain the association between mutations and different modes of inheritance causing different phenotypes. BDB1-causing mutations in ROR2 result from heterozygous premature termination codons (PTCs) in downstream exons and the conveyed phenotype segregates as an autosomal dominant trait, whereas heterozygous missense mutations and PTCs in upstream exons result in carrier status for RRS. Given that the distribution of PTC mutations revealed a correlation between the phenotype and the mode of inheritance conveyed, we investigated the potential role for the nonsense-mediated decay (NMD) pathway in the abrogation of possible aberrant effects of selected mutant alleles. Our experiments show that triggering or escaping NMD may cause different phenotypes with a distinct mode of inheritance. We generalize these findings to other disease-associated genes by examining PTC mutation distribution correlation with conveyed phenotype and inheritance patterns. Indeed, NMD may explain distinct phenotypes and different inheritance patterns conveyed by allelic truncating mutations enabling better genotype-phenotype correlations in several other disorders.
Collapse
Affiliation(s)
- S Ben-Shachar
- Department of Molecular and Human Genetic, Baylor College of Medicine, Houston, TX 77030, USA
| | | | | | | | | | | | | |
Collapse
|
13
|
Lalani SR, Thakuria JV, Cox GF, Wang X, Bi W, Bray MS, Shaw C, Cheung SW, Chinault AC, Boggs BA, Ou Z, Brundage EK, Lupski JR, Gentile J, Waisbren S, Pursley A, Ma L, Khajavi M, Zapata G, Friedman R, Kim JJ, Towbin JA, Stankiewicz P, Schnittger S, Hansmann I, Ai T, Sood S, Wehrens XH, Martin JF, Belmont JW, Potocki L. 20p12.3 microdeletion predisposes to Wolff-Parkinson-White syndrome with variable neurocognitive deficits. J Med Genet 2008; 46:168-75. [PMID: 18812404 DOI: 10.1136/jmg.2008.061002] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Wolff-Parkinson-White syndrome (WPW) is a bypass re-entrant tachycardia that results from an abnormal connection between the atria and ventricles. Mutations in PRKAG2 have been described in patients with familial WPW syndrome and hypertrophic cardiomyopathy. Based on the role of bone morphogenetic protein (BMP) signalling in the development of annulus fibrosus in mice, it has been proposed that BMP signalling through the type 1a receptor and other downstream components may play a role in pre-excitation. METHODS AND RESULTS Using the array comparative genomic hybridisation (CGH), we identified five individuals with non-recurrent deletions of 20p12.3. Four of these individuals had WPW syndrome with variable dysmorphisms and neurocognitive delay. With the exception of one maternally inherited deletion, all occurred de novo, and the smallest of these harboured a single gene, BMP2. In two individuals with additional features of Alagille syndrome, deletion of both JAG1 and BMP2 were identified. Deletion of this region has not been described as a copy number variant in the Database of Genomic Variants and has not been identified in 13 321 individuals from other cohort examined by array CGH in our laboratory. CONCLUSIONS Our findings demonstrate a novel genomic disorder characterised by deletion of BMP2 with variable cognitive deficits and dysmorphic features and show that individuals bearing microdeletions in 20p12.3 often present with WPW syndrome.
Collapse
Affiliation(s)
- S R Lalani
- Department of Molecular and Human Genetics, One Baylor Plaza, BCM225, MARB, R713, Houston, Texas 77030, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Inoue K, Khajavi M, Akazawa C, Deguchi K, Lupski J. [P164]: Molecular mechanisms underlying human
SOX10
mutations causing distinct neurocristopathies. Int J Dev Neurosci 2006. [DOI: 10.1016/j.ijdevneu.2006.09.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- K. Inoue
- National Center of Neurology & PsychiatryJapan
| | | | - C. Akazawa
- National Center of Neurology & PsychiatryJapan
| | - K. Deguchi
- National Center of Neurology & PsychiatryJapan
| | | |
Collapse
|
15
|
Stankiewicz P, Inoue K, Bi W, Walz K, Park SS, Kurotaki N, Shaw CJ, Fonseca P, Yan J, Lee JA, Khajavi M, Lupski JR. Genomic disorders: genome architecture results in susceptibility to DNA rearrangements causing common human traits. Cold Spring Harb Symp Quant Biol 2004; 68:445-54. [PMID: 15338647 DOI: 10.1101/sqb.2003.68.445] [Citation(s) in RCA: 23] [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: 11/24/2022]
Affiliation(s)
- P Stankiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine and Texas Children's Hospital, Houston, Texas 77030, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Affiliation(s)
- J H Guy
- School of Agriculture, Food and Rural Development, University of Newcastle, Newcastle Upon Tyne, NE1 7RU, UK
| | | | | | | |
Collapse
|
17
|
Khajavi M, Rahimi S, Hassan ZM, Kamali MA, Mousavi T. Effect of feed restriction early in life on humoral and cellular immunity of two commercial broiler strains under heat stress conditions. Br Poult Sci 2003; 44:490-7. [PMID: 12964634 DOI: 10.1080/000071660310001598328] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.7] [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: 10/23/2022]
Abstract
1. An experiment was carried out to evaluate the effect of early feed restriction (FR) on immunocompetence of Ross and Arian chickens with separated sexes under heat stress (HS) conditions. 2. Chickens consumed feed ad libitum (AL) or were restricted on alternate days from 11 to 20 d of age. From 35 to 41 d of age, the HS groups were exposed to a high ambient temperature of 39 +/- 1 degreesC for 7 h each day, while the thermoneutral groups (TN) were at 33 degrees C. 3. At 21 and 42d of age, the percentage of CD4+ (helper T cells) and CD8+ (cytotoxic T cells) were determined by flow cytometry. Antibody response to sheep red blood cells (SRBC) and heterophil/lymphocyte (H/L) ratio were determined on d 21 and 42. 4. On d 21, FR elevated the CD4+, antibody titre and H/L ratio, but it decreased the CD8+ T cells. On d 42, HS decreased CD4+, CD8+, and antibody titre, but it increased H/L ratio. Under TN conditions, FR chickens had higher CD4+ than AL chickens. On d 42, FR/HS chickens had higher CD4+ and antibody titre, but they had lower CD8+ and H/L ratio than AL/HS chickens. 5. On d 42, the TN-Ross strain had lower CD4+, but they had higher CD8+ and antibody titres than the TN-Arian strain. On d 42, the HS-Arian strain had higher antibody titres and a lower H/L ratio than the HS-Ross strain. 6. Male chickens had higher CD4+, CD8+, antibody titres and H/L ratios 25 in all treatment groups. 7. In conclusion, FR early in life reduced some of the negative effects of the heat stress on the immune system of broiler chickens when exposed to high environmental temperatures later in life.
Collapse
Affiliation(s)
- M Khajavi
- Tarbiat Modarres University, Tehran, Iran
| | | | | | | | | |
Collapse
|
18
|
Abstract
A particular alcohol dehydrogenase (ADH) polymorphism (allele A1) in the promoter region of the gene has been recently demonstrated to be associated with increased risk of Parkinson's disease (PD). In a case control study, we examine frequencies of ADH A1 allele in 100 PD patients (i.e. 200 alleles), 100 diseased controls (i.e. 200 alleles), and 194 healthy controls (i.e. 388 alleles). In addition, we study possible association of a combined non-amyloid component of plaque (NACP-Rep 1) allele and ADH A1 allele with risk of PD. There was no statistical significance of the frequencies of ADH A1 allele between PD patients 12/200 (6%), diseased controls 13/200 (6.5%), and healthy controls 20/388 (5.2%). No strong evidence of an association was found between ADH A1 allele and PD susceptibility in our study patients. There was also no suggestion of linkage disequilibrium between NACP-Rep 1 and ADH A1 alleles.
Collapse
Affiliation(s)
- E K Tan
- Department of Neurology, VA Medical Center, Baylor College of Medicine, Houston, TX, USA
| | | | | | | | | | | | | |
Collapse
|
19
|
Khajavi M, Tari AM, Patel NB, Tsuji K, Siwak DR, Meistrich ML, Terry NH, Ashizawa T. "Mitotic drive" of expanded CTG repeats in myotonic dystrophy type 1 (DM1). Hum Mol Genet 2001; 10:855-63. [PMID: 11285251 DOI: 10.1093/hmg/10.8.855] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 11/13/2022] Open
Abstract
In myotonic dystrophy type 1 (DM1), an expanded CTG repeat shows repeat size instability in somatic and germ line tissues with a strong bias toward further expansion. To investigate the mechanism of this expansion bias, 29 DM1 and six normal lymphoblastoid cell lines (LBCLs) were single-cell cloned from blood cells of 18 DM1 patients and six normal subjects. In all 29 cell lines, the expanded CTG repeat alleles gradually shifted toward further expansion by "step-wise" mutations. Of these 29 cell lines, eight yielded a rapidly proliferating mutant with a gain of large repeat size that became the major allele population, eventually replacing the progenitor allele population. By mixing cell lines with different repeat expansions, we found that cells with larger CTG repeat expansion had a growth advantage over those with smaller expansions in culture. This growth advantage was attributable to increased cell proliferation mediated by Erk1,2 activation, which is negatively regulated by p21(WAF1). This phenomenon, which we designated "mitotic drive" , is a novel mechanism which can explain the expansion bias of DM1 CTG repeat instability at the tissue level, on a basis independent of the DNA-based expansion models. The lifespans of the DM1 LBCLs were significantly shorter than normal cell lines. Thus, we propose a hypothesis that DM1 LBCLs drive themselves to extinction through a process related to increased proliferation.
Collapse
Affiliation(s)
- M Khajavi
- Department of Neurology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Nagamitsu S, Matsuura T, Khajavi M, Armstrong R, Gooch C, Harati Y, Ashizawa T. A "dystrophic" variant of autosomal recessive myotonia congenita caused by novel mutations in the CLCN1 gene. Neurology 2000; 55:1697-703. [PMID: 11113225 DOI: 10.1212/wnl.55.11.1697] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 11/15/2022] Open
Abstract
OBJECTIVES To identify the disease-causing mutation and its molecular consequence for a clinically distinct type of myotonic myopathy. BACKGROUND The authors encountered a unique myotonic disorder of early onset in a 37-year-old man and his 47-year-old sister. METHODS After examining known loci of inherited myotonic disorders, the authors looked for mutations within the CLCN1 gene using single strand conformation polymorphism and direct sequencing. To investigate the disease mechanism, reverse transcriptase PCR analyses of total RNA were performed. RESULTS In the proband and his affected sister, two novel mutations comprising a compound heterozygous state in the CLCN1 gene were identified: 1) a base (G) insertion in exon 7 generating a premature termination codon (fs289X) in the D5 domain, and 2) a C-to-T substitution in exon 23 resulting in a missense mutation (P932L). These mutations accompanied a clinical phenotype that is distinguishable from recessive myotonia congenita by progressive generalized muscle weakness, severe distal muscle atrophy, joint contractures, high serum creatine kinase levels, and conspicuous myopathic changes on muscle histopathology. Reverse transcriptase PCR analyses detected only the P932L mutant mRNA in skeletal muscle, suggesting that the fs289X mRNA is degraded rapidly. CONCLUSIONS These data suggest that fs289X is a null mutation, rendering the patients with the compound heterozygous genotype of fs289X/P932L to exclusively express P932L homomeric channels that may have caused the "dystrophic" phenotype.
Collapse
Affiliation(s)
- S Nagamitsu
- Department of Neurology, Baylor College of Medicine, Houston, TX 77030, USA
| | | | | | | | | | | | | |
Collapse
|
21
|
Matsuura T, Yamagata T, Burgess DL, Rasmussen A, Grewal RP, Watase K, Khajavi M, McCall AE, Davis CF, Zu L, Achari M, Pulst SM, Alonso E, Noebels JL, Nelson DL, Zoghbi HY, Ashizawa T. Large expansion of the ATTCT pentanucleotide repeat in spinocerebellar ataxia type 10. Nat Genet 2000; 26:191-4. [PMID: 11017075 DOI: 10.1038/79911] [Citation(s) in RCA: 324] [Impact Index Per Article: 13.5] [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: 11/08/2022]
Abstract
Spinocerebellar ataxia type 10 (SCA10; MIM 603516; refs 1,2) is an autosomal dominant disorder characterized by cerebellar ataxia and seizures. The gene SCA10 maps to a 3.8-cM interval on human chromosome 22q13-qter (refs 1,2). Because several other SCA subtypes show trinucleotide repeat expansions, we examined microsatellites in this region. We found an expansion of a pentanucleotide (ATTCT) repeat in intron 9 of SCA10 in all patients in five Mexican SCA10 families. There was an inverse correlation between the expansion size, up to 22.5 kb larger than the normal allele, and the age of onset (r2=0.34, P=0.018). Analysis of 562 chromosomes from unaffected individuals of various ethnic origins (including 242 chromosomes from Mexican persons) showed a range of 10 to 22 ATTCT repeats with no evidence of expansions. Our data indicate that the new SCA10 intronic ATTCT pentanucleotide repeat in SCA10 patients is unstable and represents the largest microsatellite expansion found so far in the human genome.
Collapse
Affiliation(s)
- T Matsuura
- Department of Neurology, Baylor College of Medicine, Houston, Texas, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Tan EK, Khajavi M, Thornby JI, Nagamitsu S, Jankovic J, Ashizawa T. Variability and validity of polymorphism association studies in Parkinson's disease. Neurology 2000; 55:533-8. [PMID: 10953187 DOI: 10.1212/wnl.55.4.533] [Citation(s) in RCA: 153] [Impact Index Per Article: 6.4] [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: 11/15/2022] Open
Abstract
BACKGROUND In recent years, interest in gene-environment interactions has spurred a great number of association studies on polymorphism of different genes. OBJECTIVE To review case-control studies of genetic polymorphisms in PD, and perform meta-analysis of individual gene polymorphism. METHODS The authors searched the Medline database (PubMed) for publications (English language) from January 1966 to November 1999 for association studies in PD. The key words used were "PD" and "polymorphism." The authors supplemented the search with relevant references quoted in these published articles. Those with four or more independent studies of a specific gene polymorphism were subjected to meta-analysis, with the exception of cytochrome-P450 enzyme polymorphisms, for which meta-analyses results were already available in the literature. RESULTS The authors identified 84 studies on 14 genes, including dopamine receptors (DRD2 and DRD4), dopamine transporter (DAT), monoamine oxidase (MAOA and MAOB), catechol-O-methyltransferase (COMT), N-acetyltransferase 2 (NAT2), APOE, glutathione transferase (GSTT1, GSTM1, GSTP1, and GSTZ1), and mitochondrial genes (tRNAGlu and ND2). Four polymorphisms showed significant association with PD: slow acetylator genotypes of NAT2 (PD:control OR = 1.36), allele >188bp of the MAOB (GT)n polymorphism (OR = 2.58), the deletion allele of GSTT1 (OR = 1.34), and A4336G of tRNAGlu (OR = 3.0). No significant differences were found for the other genes. CONCLUSION Significant associations with PD were found in polymorphisms of NAT2, MAOB, GSTT1, and tRNAGlu. Although significant association does not imply a causal relationship between the presence of the polymorphisms and PD pathogenesis, their pathophysiologic significance should be studied further.
Collapse
Affiliation(s)
- E K Tan
- Department of Neurology, Baylor College of Medicine, Houston, Texas 77030, USA
| | | | | | | | | | | |
Collapse
|
23
|
Tan EK, Matsuura T, Nagamitsu S, Khajavi M, Jankovic J, Ashizawa T. Polymorphism of NACP-Rep1 in Parkinson's disease: an etiologic link with essential tremor? Neurology 2000; 54:1195-8. [PMID: 10720300 DOI: 10.1212/wnl.54.5.1195] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.8] [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: 11/15/2022] Open
Abstract
An allele (263bp) of the nonamyloid component of plaques (NACP)-Repl polymorphism has shown association with sporadic PD in a German population. The authors studied this polymorphism in 100 American PD patients and 100 healthy controls. The authors also studied 46 essential tremor (ET) and 55 Huntington's disease (HD) patients. Allele 263bp was significantly higher in PD patients (OR = 3.86) and ET patients (OR = 6.42) but not HD patients, compared with healthy controls. The association of allele 263bp with PD and ET suggests a possible etiologic link between these two conditions.
Collapse
Affiliation(s)
- E K Tan
- Department of Neurology, Baylor College of Medicine, Houston 77030, USA
| | | | | | | | | | | |
Collapse
|
24
|
Abstract
We investigated a family with a new type of autosomal dominant cerebellar ataxia (ADCA) in which pure cerebellar ataxia is often accompanied with epilepsy. No CAG repeat expansions were detected at the spinocerebellar ataxia (SCA) type 1, 2, 3, 6, or 7 locus, and SCAs 4 and 5 were excluded by linkage analysis. We found linkage between the disease locus and D22S274 (Zmax = 3.86 at theta = 0.00) and two other makers in 22q13-qter. Haplotype analysis of the crossover events and the multipoint linkage mapping localized the disease locus to an 8.8-cM region between D22S1177 and D22S1160.
Collapse
Affiliation(s)
- T Matsuura
- Department of Neurology, Howard Hughes Medical Institute, Houston, TX, USA
| | | | | | | | | | | |
Collapse
|
25
|
Wang WW, Khajavi M, Patel BJ, Beach J, Jankovic J, Ashizawa T. The G209A mutation in the alpha-synuclein gene is not detected in familial cases of Parkinson disease in non-Greek and/or Italian populations. Arch Neurol 1998; 55:1521-3. [PMID: 9865795 DOI: 10.1001/archneur.55.12.1521] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To determine whether the G-to-A substitution at nucleotide 209 (G209A) mutation in the alpha-synuclein gene is responsible for familial Parkinson disease (PD) in the US population. DESIGN Polymerase chain reaction-based DNA analysis of consecutive patients with PD and family history of PD. SETTING A university-affiliated movement disorder clinic and a Veterans Affairs clinical research laboratory. PATIENTS Forty-four patients with PD and family history of PD and 29 patients with sporadic PD, all with no known Greek and/or Italian background. RESULTS None of the DNA samples showed the G209A mutation. CONCLUSION The G209A mutation is rare in US patients with familial PD.
Collapse
Affiliation(s)
- W W Wang
- Veterans Affairs Medical Center, Department of Neurology, Baylor College of Medicine, Houston, Tex 77030, USA
| | | | | | | | | | | |
Collapse
|
26
|
Abstract
We reviewed our experience with 21 patients who had Cushing's disease due to ACTH-secreting macroadenomas to clarify the natural history of this disease. All patients had typical clinical and biochemical features of ACTH-dependent hypercortisolism. Their mean maximal tumor diameter was 1.6 +/- 0.1 cm, and the range was 1.0-2.7 cm. Six patients had cavernous sinus invasion, three had invasion of the floor of their sella, and nine had suprasellar extension. The observed remission rate was significantly lower in macroadenoma patients than in microadenoma patients (67% vs. 91%; chi 2 = 5.7; P < 0.02). Cavernous sinus invasion (odds ratio, 35; 95% confidence interval, 2.6-475; P < 0.008) and presence of a maximum tumor diameter 2.0 cm or more (odds ratio, 12.9; 95% confidence interval, 1.4-124; P < 0.02) emerged as the only predictors of residual disease after surgery. The observed recurrence rate was significantly higher in macroadenoma patients than in microadenoma patients (36% vs. 12%; chi 2 = 4.2; P < 0.05). Macroadenoma patients tended to suffer from recurrences earlier than did microadenoma patients (16 vs. 49 months). Stepwise multiple logistic regression did not identify any predictors of disease recurrence in macroadenoma patients. Eight macroadenoma patients underwent a total of nine repeat surgical procedures, but none of these resulted in clinical remissions. Only four of seven (57%) patients followed for a sufficient period of time achieved normal urinary free cortisol levels after conventional radiotherapy. Three (75%) of these four patients had re-recurrent hypercortisolism after brief periods of eucortisolism. Pharmacological agents and adrenalectomy were effective in the management of hypercortisolism in patients with residual and recurrent disease. Our results indicate that ACTH-secreting macroadenomas are more refractory to conventional treatments than are ACTH-secreting microadenomas.
Collapse
Affiliation(s)
- L S Blevins
- Department of Medicine, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | | | | | | |
Collapse
|
27
|
Affiliation(s)
- G E Umpierrez
- Department of Medicine, Emory University School of Medicine, Atlanta, Georgia 30303, USA
| | | | | |
Collapse
|