Results 121 to 130 of about 856,874 (305)

Coupled fixed point theorems with applications to fractional evolution equations

Advances in Difference Equations, 2017
In this paper, we first prove some coupled fixed point theorems in partially ordered Φ-orbitally complete normed linear spaces. And then apply the obtained fixed point theorems to a class of semilinear evolution systems of fractional order for proving ...
He Yang, Ravi P Agarwal, Hemant K Nashine   +2 more
doaj   +1 more source

Integrative analysis of circulating tumor cells (CTCs) and exosomes from small‐cell lung cancer (SCLC) patients: a comprehensive approach

Molecular Oncology, EarlyView.
This study simultaneously investigated circulating tumor cells (CTCs) and exosomes from small‐cell lung cancer (SCLC) patients. The elevated expression of JUNB and CXCR4 in CTCs was a poor prognostic factor for SCLC patients, whereas exosomal overexpression of these biomarkers revealed a high discrimination ability of patients from healthy individuals,
Dimitrios Papakonstantinou, Argyro Roumeliotou, Evangelia Pantazaka, Athanasios‐Nasir Shaukat, Athina Christopoulou, Angelos Koutras, Foteinos‐Ioannis Dimitrakopoulos, Vassilis Georgoulias, Anastasia Xagara, Evangelia Chantzara, Fillipos Koinis, Athanasios Kotsakis, Constantinos Stathopoulos, Galatea Kallergi   +13 more
wiley   +1 more source

A Generalization of Fixed-Point Theorems for Mappings with a Contractive Iterate

Mathematics
In this paper, a generalization of fixed-point mappings with an iterate at a point in complete metric spaces is shown, using the notions of T-closed sets and i-P-regularity/d-P-regularity, proving conditions for the existence and uniqueness of the fixed ...
Valentin Georgiev, Boyan Zlatanov
doaj   +1 more source

Coupled Fixed Point Theorems for Weak Contraction Mappings under F-Invariant Set

Abstract and Applied Analysis, 2012
We extend the recent results of the coupled fixed point theorems of Cho et al. (2012) by weakening the concept of the mixed monotone property. We also give some examples of a nonlinear contraction mapping, which is not applied to the existence of the ...
Wutiphol Sintunavarat, Yeol Je Cho, Poom Kumam   +2 more
doaj   +1 more source

Coupled common fixed point theorems for mixed weakly monotone mappings in partially ordered metric spaces [PDF]

, 2012
M‎. ‎Eshaghi Gordji, Esmat Akbartabar, Yeol Je Cho, Maryam Ramezani   +3 more
openalex   +1 more source

The accumulation of myeloid‐derived suppressor cells participates in abdominal infection‐induced tumor progression through the PD‐L1/PD‐1 axis

Molecular Oncology, EarlyView.
This study explores how sepsis affects GC progression by creating an immunosuppressive environment. Our findings reveal that sepsis promotes immune dysregulation, enhancing tumor growth and metastasis. Targeting the PD‐1/PD‐L1 pathway with monoclonal antibodies shows potential for restoring immune function and improving outcomes in cancer patients ...
Yiding Wang, Ting Guo, Xiaofang Xing, Xijuan Liu, Xuejun Gan, Yingai Li, Yan Liu, Fei Shan, Zhouqiao Wu, Jiafu Ji, Ziyu Li   +10 more
wiley   +1 more source

The PTTG1/VASP axis promotes oral squamous cell carcinoma metastasis by modulating focal adhesion and actin filaments

Molecular Oncology, EarlyView.
VASP was found to be overexpressed in metastatic oral squamous cell carcinoma (OSCC) tissues. Notably, PTTG1‐ and VASP‐deficient OSCC cells demonstrated suppressed metastatic properties by disrupting the interaction between the cytoskeleton and focal adhesion (FAs) in the filopodia region.
Suyeon Park, Sang Shin Lee, Shihyun Kim, Yeonjun Lee, Gyeonwon Park, Jung Oh Kim, Jongho Choi   +6 more
wiley   +1 more source

Solution of fractional differential equations via coupled fixed point

Electronic Journal of Differential Equations, 2015
In this article, we investigate the existence and uniqueness of a solution for the fractional differential equation by introducing some new coupled fixed point theorems for the class of mixed monotone operators with perturbations in the context of ...
Hojjat Afshari, Sabileh Kalantari, Erdal Karapinar   +2 more
doaj  

Common Coupled Fixed Point Theorems of Single-Valued Mapping for c-Distance in Cone Metric Spaces

Abstract and Applied Analysis, 2012
The existence and uniqueness of the common coupled fixed point in cone metric spaces have been studied by considering different types of contractive conditions.
Zaid Mohammed Fadail, Abd Ghafur Bin Ahmad   +1 more
doaj   +1 more source

Coupled Fixed Point Theorems for a Pair of Weakly Compatible Maps along with CLRg Property in Fuzzy Metric Spaces [PDF]

, 2012
Manish Jain, Kenan Taş, Sanjay Kumar, Neetu Gupta   +3 more
openalex   +1 more source