Taken together, our data suggest that the overexpression of a Cldn tail truncation mutant in the suprabasal compartment of the mouse epidermis results in its delayed maturation, a propensity for injury, diminished repair and skin barrier deficiency reminiscent of the intrinsic aging process of human skin.
It may also be possible that a primary barrier deficiency not only promotes infections but has a role in the aetiology of the disease itself [ 44].
McKay et al indicate that SEB induces colonic epithelial barrier deficiency via induction of IFN-γ and TNF-α production that can be partially inhibited by TGF-β [ 9, 24, 46].
Provider-related barriers include deficiencies in knowledge and skills (and ongoing educational opportunities), delays in referral, deficient communication, and deficient numbers of female health providers for female patients.
Environmental barriers include deficiencies in governance, the burden of displaced or refugee populations, and aspects of the medicolegal system, which impact treatment and referral.
In spite of these relatively high coverage rates, quality of care deficits due to persistent financial and geographical barriers, ongoing deficiencies in human resources for health, and frequent stock-outs of essential equipment and drugs still contribute to poor maternal health outcomes [ 26].
In mouse models, three mechanisms promote pathogenic fungal translocation: (1) disruption of the equilibrium in GI flora, thereby permitting intestinal overgrowth of pathogens; (2) increased permeability of the intestinal mucosal barrier; and (3) deficiencies in host defences (Shoham and Levitz, 2005).
Cancer patients develop a spectrum of infections that depend on the patients' specific underlying immunologic defects (e.g., immunoglobin, complement, cellular immunity, and granulocyte deficiencies), local barrier defense defects (e.g., mucositis, tumor invasion), and malignancy type (hematologic or solid).
Thus further compromise of the barrier by mast cell deficiency would be predicted to have little to no additional effect, as was observed experimentally.
In other systems without a blood-tissue barrier, single MCP-1/CCL2 deficiency is found to effectively inhibit MCP-1/CCL2-mediated diseases such as atherosclerosis [ 57] and diabetes [ 58].
The implications of this study are that service quality deficiencies, medical barriers, and access issues related to provider availability and inappropriate client charges may limit clients' ability to obtain the family planning services for which they come to health facilities.
