The paper proposes a possible molecular mechanism of cell fate specification during limb development. The mechanism is based on a step-by-step activation of cell determinants, which occurs at the transcriptional level. Activation of the next determinant (or reactivation of the previous one) occurs only after the next cell division, only one determinant being activated (reactivated) in each cell cycle. This mechanism may be a basis for both proximodistal and anteroposterior specification of cell fates. As a result of this mechanism, the limb bud mesoderm proves to be divided into cell areas. Cells of the specific area would be condensed to form the specific cartilaginous element.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1006/jtbi.2002.2549 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Study on the Effects of Gluteal Muscle Activation on the Electromyography of Lower Limb Muscles in Young Male Patients With Patellofemoral Pain Syndrome.
Orthop Surg
January 2025
School of Exercise and Health Sciences, Xi'an Physical Education University, Xian, China.
Objective: Patellofemoral pain syndrome (PFPS) is a common knee issue, and hip joint function significantly affects knee health. Gluteus activation exercises are a promising treatment for PFPS. This study aims to investigate the impact of gluteal muscle activation exercises on the muscle involvement and movement patterns of young male patients with PFPS.
View Article and Find Full Text PDFUnusual swelling of the hand and multiple nodules over the body - beware of mycobacteria.
Acta Orthop Belg
December 2024
Atypical mycobacteria can cause rare and atypical infections of the hand. We report the case of an immunocompetent 46-year-old male initially presenting with thumb felon and progressively developing symptoms of carpal tunnel syndrome, tenosynovitis of multiple fingers and a sporotrichoid lymphocutaneous infection causing chronic cutaneous lesions all over the body. We would like to highlight the diagnostic and therapeutic difficulties of these atypical infections, which mimic other conditions and can cause a lot of morbidity.
View Article and Find Full Text PDFAtypical lipomatous tumors/well-differentiated liposarcomas (ALT/WDLPS) are low-grade, slow-growing, and locally aggressive tumors. We investigated clinical outcomes and recurrence factors for ALT/WDLPS of the extremities. This is retrospective study across three institutions which included patients who underwent surgery for ALT/WDLPS from 2001 to 2019.
View Article and Find Full Text PDFCorrelation between body composition variables, plantar pressure and pain level.
Acta Bioeng Biomech
September 2024
PhD, Associate Professor and Researcher Sports Science Department, Vice-president of Faculty of Human Social Sciences University of Beira Interior, Covilhã, Portugal; Research Center in Sports, Health and Human Development, Covilhã, Portugal.
From a current perspective, it is understood that body posture is influenced by individual asymmetries, cultural context, habitual body patterns, etiological factors and psychosocial factors allocated to the individual. Clarifying the musculoskeletal cause that originated the postural alteration is considered the clinical challenge in the treatment of pain or discomfort. Recent studies have shown the influence of changes in body weight on the distribution of plantar pressure and foot pain, emphasizing the importance of understanding these relationships.
View Article and Find Full Text PDFThe real rotational capacity of the human joints - the muscular and gravitational torques and the foot as a platform.
Acta Bioeng Biomech
September 2024
Jagiellonian University Medical College, Faculty of Medicine, Department of Bioinformatics and Telemedicine, Kraków, Poland.
The purpose was to answer what is the relationship between torques acting on the human body, how does the triceps calf muscle balance the weight of a tilted body and what is the foot's role in the titling body? Two research models were developed. Model 1 - the one-sided lever system consists of a flat bar with, an axis of rotation, used to determine the weight and torque at a given point on it. Model 2 - the two-sided lever system consists of a flat bar imitating a tilted body counteracted by the Achilles tendon, and a platform imitating a foot.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!