Abstract：
:Plasticity of adult cells has been identified in several post-natal tissues in the past few years and has attracted special attention in regenerative medicine. Skin is the biggest organ in the body. Adult skin consists of epidermis, dermis and appendages such as hairs and glands which are linked to the epidermis but project deep into the dermal layer. Skin stem cell biology has been a focus of increasing interest in current life science. Committed stem cells with limited differentiation potential for regeneration and repair of epidermis have been known for decades. Recent studies further report that adult skin tissues contain cell populations with pluripotent characteristics. Multipotent stem cells from hair follicle and non-follicular skin, both in epidermal and dermal tissues, are found to have the differentiation capacity to generate multiple cell lineages. Basing on the present data, our hypothesis is that skin may serve as a local reservoir of various adult stem cell populations, including committed stem cell populations and pluripotent stem cell populations both in epidermal and dermal tissues. Given its easy accessibility, stem cells in skin will not only provide an experimental model for skin biology, but also may provide an experimental model for studying the epithelial-mesenchymal interactions of several other organs outside of skin. The stem cell populations in skin tissues may also have extensive therapeutic implications in the replacement of skin and may serve as an alternative source of stem cells for several other organs outside of skin. The in situ activation and mobilization of stem cell populations in the skin is an ideal way to renew and repair epidermis and dermis, even appendages.
journal_name
Med Hypothesesjournal_title
Medical hypothesesauthors
Chunmeng S,Tianmin Cdoi
10.1016/j.mehy.2003.12.022keywords:
subject
Has Abstractpub_date
2004-01-01 00:00:00pages
683-8issue
5eissn
0306-9877issn
1532-2777pii
S0306987704000404journal_volume
62pub_type
杂志文章abstract：BACKGROUND:There is widespread loss of acetylcholine and other neurotransmitters in Alzheimer's disease and vascular dementia. It has generally been assumed that death of neurons causes neurotransmitter loss, but alternatively neurotransmitter depletion itself may at least contribute to neurodegeneration. PRESENTATION...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.02.043
更新日期：2006-01-01 00:00:00
abstract：:It is postulated that the angiogenic potential of tissues is influenced by the fine structure of heparan glycosaminoglycans present in the tissues. Possible mechanisms involved are discussed. It is suggested that compounds chemically related to heparans might usefully act as inhibitors of pathological angiogenesis. ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(84)90071-9
更新日期：1984-04-01 00:00:00
abstract：:The hypothesis of the evolutionary origin of bipolar disorder (EOBD) synthesized ideas about the biological clock and seasonal shifts in mood (Rosenthal, Wehr) with theorizing that bipolar disorder descends from a pyknic (compact, cold-adapted) group (Kretchmer). The hypothesis suggested that bipolar behaviors evolved...
journal_title：Medical hypotheses
pub_type： 历史文章,杂志文章
doi：10.1016/j.mehy.2011.10.005
更新日期：2012-01-01 00:00:00
abstract：:Oral water irrigation devices (WIDs) are widely used for oral physiotherapy in homes and dental clinics throughout the world. A major area of concern in the use of WIDs has been the possibility of injury to the sulcular epithelium and underlying tissue. There are several documented clinical cases of tissue injury with...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(85)90110-0
更新日期：1985-12-01 00:00:00
abstract：:The recent global pandemic created by the Coronavirus SARS-CoV-2, started in Wuhan, China in December 2019, has generated panic, both in term of human death (4-5% of infected patients identified through testing) and the global economy. Human sufferings seem to be continuing, and it is not clear how long this will cont...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.109754
更新日期：2020-09-01 00:00:00
abstract：:Glaucoma is the leading cause of irreversible blindness worldwide, which is now viewed as a disease of brain with pathogenesis not fully understood. The main diagnostic methods are examining the retinal nerve fiber layer through optical coherence tomography and investigating visual field defect, but these methods pres...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2018.12.020
更新日期：2019-02-01 00:00:00
abstract：:The adaptive value of sleep remains unknown in spite of the intense research performed throughout the last decades. However, few sleep researchers are aware of the difficulties posed by the blind acceptance of an extreme adaptationist viewpoint. Under this philosophy, every anatomical and functional detail present in ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.05.007
更新日期：2005-01-01 00:00:00
abstract：:A model of human language requires a theory of meaningful marks. Humans are the only species who use marks to think. A theory of marks identifies children's scribbles as significant behavior, while hypothesizing the importance of rotational systems to hominid brain evolution. By recognizing the importance of children'...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.09.002
更新日期：2005-01-01 00:00:00
abstract：:Hepatopulmonary syndrome (HPS) is a severe pulmonary sequela which can affect up to 15% of patients with cirrhotic liver disease. There is no treatment for HPS other than liver transplantation. The cause of HPS is incompletely understood, but the pulmonary vasodilation in HPS is thought to be related to increased leve...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2003.10.017
更新日期：2004-01-01 00:00:00
abstract：:This hypothesis would help to elevate safety in nanogold-therapy of some cancers. It has no previous record in published media and there is no existing protocol for what is expressed in this paper. The hypothesis makes some experimental recommendations for future research at the interface of nanotechnology and biologi...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.01.035
更新日期：2013-05-01 00:00:00
abstract：:Colic is generally defined as excessive crying in early infancy and can have negative consequences on the infant as well as on the infant's family life. Excessive crying can result in escalating parental stress levels, abusive caregiver response, increased risk of shaken baby syndrome and parental postpartum depressio...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2014.05.018
更新日期：2014-09-01 00:00:00
abstract：:Chronic Interstitial Nephritis in Agricultural Communities (CINAC) continues to attract controversy in the scientific community. It was previously known as Chronic Kidney Disease of Unknown Etiology (CKDu) and is not associated with the common aetiological factors such as diabetes. There is general acceptance that it ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.110414
更新日期：2021-01-01 00:00:00
abstract：:The hepatitis B infection leads to various profound pathological processes in liver metabolism. Some biochemical alterations detectable by blood analysis are currently used for a preliminary evaluation of the infection. Based on existing data we present here evidence that non-protein amino acid L-homoserine is a patho...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1054/mehy.2001.1527
更新日期：2002-04-01 00:00:00
abstract：:The terminology relating to 'psychological stress' is so confused and ambiguous that research in this field - and application of its results - must surely be hampered. Relevant words with conflicting usages and scientific definitions include 'stress' itself, 'stressor', 'strain', 'challenge', 'demand', 'threat', 'reso...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2009.10.043
更新日期：2010-04-01 00:00:00
abstract：:Cancer is the second cause of death worldwide, but current therapies are often insufficient or linked with toxicity. Initial evidence in scientific literature seems to support the role of non-pharmacological strategies, including hypoglycemia, in cancer treatment. The biological rationale for hypoglycemia-based treatm...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109276
更新日期：2019-09-01 00:00:00
abstract：UNLABELLED:The expression of consciousness and the site of memory storage within the brain are unknown despite over a century of intense empirical scrutiny. Recent anatomical studies show that human protoplasmic astrocytes form innumerable uniform polyhedral tessellating domains that are arranged three-dimensionally. T...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2013.09.021
更新日期：2013-12-01 00:00:00
abstract：:Hemolysis-associated pulmonary hypertension (HA-PH) is a serious clinical complication of various hemolytic disorders, and pulmonary hypertension (PH) is considered the greatest risk factor for death in patients with a hemolytic disorder. It is now well established that hemolysis causes the release of soluble hemoglob...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2008.12.043
更新日期：2009-06-01 00:00:00
abstract：:About 19-26% of patients with chronic lymphocytic leukemia (CLL) have intractable disease resistant to chemotherapy, have a relatively short median survival time and are responsive to splenectomy. Lymphocytes from patients with intractable CLL are resistant in vitro to X-irradiation and to colchicine. Responsive CLL i...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(90)90001-u
更新日期：1990-02-01 00:00:00
abstract：:The assumption is introduced that there are two types of adaptive responses in central neurons in response to significantly changed circuit activity. Morphological synaptic modifications and synapse turnover are thought to be involved in both of these responses, in such a way that in the first case they are to restore...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(91)90077-c
更新日期：1991-05-01 00:00:00
abstract：:The incidence rate of cutaneous melanoma has been increasing faster than that of any other cancer in white-skinned populations over the past decades. The main risk factors for melanoma (i.e. exposure to sunlight, naevus count, phototype, and family history of melanoma) may not wholly explain the epidemiological trends...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2010.03.010
更新日期：2010-09-01 00:00:00
abstract：:Hypertensive left ventricular hypertrophy (LVH) is a maladaptive response to chronic pressure overload and a strong independent risk factor for cardiovascular disease. Regression of LVH is associated with improved prognosis. Regression of LVH with antihypertensive therapy (angiotensin-converting enzyme inhibitors, ang...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2015.12.016
更新日期：2016-02-01 00:00:00
abstract：:Interleukin (IL)-17 is a pro-inflammatory cytokine originally described in T lymphocytes. Increased production of IL-17 has been linked to the induction of cytokines, chemokines and adhesion molecules in various cell types, effects that likely contribute to a number of inflammatory diseases including rheumatoid arthri...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2004.03.009
更新日期：2004-01-01 00:00:00
abstract：:In the last decades, relevant efforts have been made to reduce the cancer incidence in the European Union. The prevention programmes against cancer have obtained satisfactory results except for colorectal cancer (CRC). Identification of risk factors is primordial to plan preventive strategies for CRC. We hypothesize t...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.03.041
更新日期：2008-01-01 00:00:00
abstract：:Epidemiological studies highlight the negative correlation between vitamin D levels and the incidence of many non-skeletal diseases including inflammatory diseases, cancer, and metabolic and neurological disorders. However, most randomized controlled trials (RCTs) with oral vitamin D supplementation give mixed results...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2019.109417
更新日期：2020-01-01 00:00:00
abstract：:High level contamination by natural and industrial sources of the alkali earth metal, barium (Ba) has been identified in the ecosystems/workplaces that are associated with high incidence clustering of multiple sclerosis (MS) and other neurodegenerative diseases such as the transmissible spongiform encephalopathies (TS...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2003.12.034
更新日期：2004-01-01 00:00:00
abstract：:The resonator theory claims that light scattering by the melanin granules of the retinal pigment epithelium causes light to be reflected back through the outer segment of the cones, in a direction opposite that of the incident light. These two opposite directed wave motions may produce standing waves inside the cone o...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(92)90046-f
更新日期：1992-02-01 00:00:00
abstract：:The paper studies how certain topologic features of the nuclear envelope may reorganize entrained transcription via spatial rearrangements of genes carried by distinct chromatids. ...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/0306-9877(95)90202-3
更新日期：1995-07-01 00:00:00
abstract：:In mathematics and physics, chaos theory deals with the behavior of certain nonlinear dynamical systems that under certain conditions exhibit a phenomenon known as chaos, which is characterised by a sensitivity to initial conditions. Mathematicians paradoxically call such states of order chaos and distinguish them fro...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2006.02.032
更新日期：2006-01-01 00:00:00
abstract：:Maintaining a body temperature within a narrow range is vital for the survival of all mammals, including humans. With the help of optogenetics, a better understanding of the thermoregulatory organs and pathways is achieved. Optogenetic activation of the GABAergic neurons in the ventral part of the lateral preoptic nuc...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2020.109704
更新日期：2020-06-01 00:00:00
abstract：:Preliminary but increasing evidence suggests that attention-deficit/hyperactivity disorder (ADHD), Tourette's syndrome (TS), and restless legs syndrome (RLS) may be comorbid. In the present article, we hypothesize that ADHD, TS, and RLS may be part of a spectrum, and that iron deficiency contributes to the pathophysio...
journal_title：Medical hypotheses
pub_type： 杂志文章
doi：10.1016/j.mehy.2007.10.013
更新日期：2008-01-01 00:00:00
