scholarly journals Impact of neurotrophic factors combination therapy on retinitis pigmentosa

2020 ◽  
Vol 48 (11) ◽  
pp. 030006052096783
Author(s):  
Xiaobei Yin ◽  
Ting He ◽  
Rui Chen ◽  
Hui Cui ◽  
Genlin Li

Objective We aimed to determine the location of neurotrophic receptors tropomyosin receptor kinase (Trk)B, TrkC, and ciliary neurotrophic factor receptor (CNTFR)α in the retina of retinal degeneration ( rd) mice and to explore the dynamic changes of B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X-protein (Bax), and microtubule-associated protein light chain 3 (LC3) expression and ultrastructure in the retina of rd mice intravitreally injected with neurotrophic factors. Methods Rd mice aged 2 and 3 weeks post-natally (PN) received intravitreal injections of neurotrophic factors. Two weeks later, their retinas were harvested for the detection of Bax, Bcl-2, and LC3 mRNA and protein expression. Results TrkB and TrkC expression levels were lower at 3 weeks PN compared with 0, 1, and 2 weeks PN, but CNTFRα expression was still detected in certain layers. The three receptors were expressed in different retinal layers at the same timepoint. Bax expression was downregulated in, rhBDNF + rhCNTF, rhBDNF + rhNT-3, groups 2 weeks after intravitreal injection; Bcl-2 expression was upregulated in the rhBDNF + rhCNTF + rhNT-3 group at PN-4w; and LC3 expression was upregulated in rhBDNF + rhCNTF + rhNT-3 groups. Conclusions The combined use of neurotrophic factors had a more significant effect on Bax, Bcl-2, and LC3 expression than the same factors used alone.

2015 ◽  
Vol 99 (3) ◽  
pp. 537-545 ◽  
Author(s):  
Kah Keng Wong ◽  
Ewe Seng Ch'ng ◽  
Suet Kee Loo ◽  
Azlan Husin ◽  
María Arestin Muruzabal ◽  
...  

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hongyan Hou ◽  
Ying Luo ◽  
Guoxing Tang ◽  
Bo Zhang ◽  
Renren Ouyang ◽  
...  

Abstract Background This study aimed to analyze the lymphocyte subsets, their activities and their dynamic changes during immunochemotherapy in patients newly diagnosed with diffuse large B cell lymphoma (DLBCL). Methods Patients with DLBCL (n = 33) were included in the present study. Their peripheral lymphocyte subsets, phenotypes and functions were detected using flow cytometry. The dynamic results of lymphocyte activities were available for 18 patients. Results Compared with healthy controls (HCs), the counts of CD3+, CD4+, and CD8+ T cells as well as those NK cells decreased in patients newly diagnosed with DLBCL, mainly attributed to patients with high risk of prognosis assessed by International Prognostic Index (IPI) score. Lymphocyte counts didn’t present significant difference between high risk (IPI scores 3–5) and low risk patients (IPI scores 0–2), but CD4+ T cells and CD8+ T cells expressed higher levels of CD28 and HLA-DR, respectively, in patients with IPI score ranging from 3 to 5. Patients at high risk harbored higher percentage of regulatory T cells (Tregs), and their CD4+ and CD8+ T cells produced lower levels of IFN-γ, reflecting an impaired cellular immune response. The dynamic changes of lymphocyte numbers and functions during treatment were further investigated. Total counts of CD3+, CD4+, CD8+ T and NK cells progressively decreased because of the cytotoxicity of chemotherapy and then gradually recovered after six cycles treatment (rituximab combined with cyclophosphamide, doxorubicin, vincristine and prednisone, R-CHOP). The functions of CD4+ and CD8+ T cells recovered by the end of two cycles R-CHOP treatment, although NK cell function was not significantly affected throughout treatment. These results suggest that the counts and functions of lymphocytes are significantly decreased in patients with DLBCL, particularly those of CD4+ and CD8+ T cells. Conclusions The absolute counts and functions of CD4+, CD8+ T cells, which were significantly lower in patients with DLBCL, gradually recovered after effective treatment. Therefore, combined detection of T cell counts and functions are critically important for administering effective personalized immunotherapy as well as for identifying new prognostic markers or DLBCL.


2010 ◽  
Vol 9 (5) ◽  
pp. 1244-1255 ◽  
Author(s):  
Shahab Uddin ◽  
Azhar R. Hussain ◽  
Maqbool Ahmed ◽  
Rong Bu ◽  
Saeeda O. Ahmed ◽  
...  

2015 ◽  
Vol 21 ◽  
pp. 153-154
Author(s):  
Abhijana Karunakaran ◽  
Kadapalakere Reddy ◽  
Anshu Alok ◽  
Manav Batra ◽  
Ajay Chaudhuri ◽  
...  
Keyword(s):  
B Cell ◽  

Praxis ◽  
2016 ◽  
Vol 105 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Andreas Lohri

Zusammenfassung. Maligne Lymphome unterteilen sich zwar in über 60 Entitäten, das grosszellige B-Zell-Lymphom, das follikuläre Lymphom, der Hodgkin und das Mantelzell-Lymphom machen aber mehr als die Hälfte aller Lymphome aus. Im revidierten Ann Arbor staging system gelten die Suffixe «A» und «B» nur noch für den Hodgkin. «E» erscheint nur noch bei Stadien I und II. Eine Knochenmarksuntersuchung wird beim Hodgkin nicht mehr verlangt, beim DLBCL (Diffuse large B cell lymphoma) nur, falls das PET keinen Knochenmark-Befall zeigt. Der PET-Untersuchung, speziell dem Interim-PET, kommt eine entscheidende Bedeutung zu. PET-gesteuerte Therapien führen zu weniger Toxizität. Gezielt wirkende Medikamente mit eindrücklicher Wirksamkeit wurden neu zugelassen. Deren Kosten sind hoch. Eine strahlen- und chemotherapiefreie Behandlung maligner Lymphome wird in Zukunft möglich sein.


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