de-differentiation

any process in which previously more complex and variegated social arrangements are replaced by less complex patterns, e.g. the reduction of political pluralism under TOTALITARIANISM.
(a specifically postmodernist concept referring to) ‘the collapse of the Modernist order of things’. Modernity is seen as dividing the social and natural world into pure, harmonized categories, defined and governed by reason. So private life was divided from public life, youth from old age, work from leisure, etc. Postmodernists believe that this Modernist order was always a myth and that this myth has now disintegrated. De-differentiation points to the unsustainability of rational order. It emphasizes the messiness, contrariness, ambiguity and incoherence of social life.

Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000

References in periodicals archive ?

(7) Third, the de-differentiation theory indicates that existing papillary, follicular, medullary, and anaplastic thyroid carcinoma de-differentiate into SCC.

Squamous cell carcinoma of the thyroid with lymph nodal and pulmonary metastases

The finding is the first to show that mammalian adult stem cells can march backward along the developmental timeline in a process called de-differentiation to become more primitive in response to environmental signals.

Skeletal Stem Cells Regress When Tasked With Extensive Regeneration

Evans, "De-differentiation of papillary thyroid carcinoma into squamous cell carcinoma.

Squamous Cell Carcinoma of the Thyroid as a Result of Anaplastic Transformation from BRAF-Positive Papillary Thyroid Cancer

Exact origin of melanoma in GCTs is unknown but these may occur from transformation of dermal elements or de-differentiation of germ cells to melanomas.

Secondary malignant melanoma in primary mediastinal germ cell tumour

It occurs more commonly in the extremities, and cases of primary undifferentiated pleomorphic sarcoma of the penis are very difficult to find.[sup.9] El Hayek and colleagues[sup.10] suggest that one possible explanation could be the occurrence of de-differentiation. On the other hand, the tumour could have been pleomorphic from the start.

Pleomorphic malignant fibrous histiocytoma/undifferentiated pleomorphic sarcoma of the glans penis

GBM frequently arises de novo, but may develop from diffuse or anaplastic astrocytomas that undergo de-differentiation. (4) Glioblastoma is the most common brain tumour, accounting for 12 - 15% of intracranial neoplasms and 50 - 60% of astrocytic tumours.

Glioblastoma multiforme has many faces

However, no experiments published have directly demonstrated this de-differentiation process, so Li and his research team remained skeptical.

Stem cells identified as 'real culprit behind vascular diseases'

Stem cell scientists in China have used a technique known as de-differentiation to re-engineer cells to a more primitive state that increases cell survival rates and offers greater potential for clinical use.

Scientists reprogram stem cells to improve transplant effectiveness

In particular, he discusses the definition and classification of cancer, cellular carcinogenesis as a monoclonal multi-step threshold phenomenon, the five types of genetic and molecular changes leading to cancer, causes of cancer, cellular changes associating malignant transformation or de-differentiation, tumor recurrence and metastasis, tumor markers, natural inhibitors of the multi-stage carcinogenesis, and biochemical bases of current anti-cancer treatments.

Cancer biology; an updated global overview

Having learnt some lessons from SCNT (cloning), we need to be very cautious in generating stem cells by directed differentiation (IPS) or de-differentiation for cell therapy to treat diseases.

Human centriole: origin, & how it impacts fertilization, embryogenesis, infertility & cloning

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