Feasibility of 830 nm laser imaging for vein localization in dark skin tissue-mimicking phantoms

Dark skin discoloration development on peach and nectarine cultivars was investigated in response to exogenous pH and metallic ions. The influence of skin abrasion and washing in combination with exogenous contaminants was studied in a factorial design experiment by using skin discs. Only abraded skin discs with and without washing developed discoloration after being exposed to high pH and different metallic ion concentrations. Among the metallic ion contaminants studied (Fe, Al, Cu, Sn, Zn, and Na), iron was the most effective in causing dark skin discoloration at physiological pH (3.5). Iron concentrations ≥10 ppm induced dark discoloration on abraded fruit skin. Dark discoloration development produced by exposing the skin tissue to pH levels >6 was reversible, whereas the dark discoloration induced by iron and aluminum remained stable.

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Dark skin tissue reaction in laser assisted hair removal with a long-pulse ruby laser

Journal of Cutaneous Laser Therapy ◽

10.1080/14628830050516551 ◽

2000 ◽

Vol 2 (1) ◽

pp. 17-20 ◽

Cited By ~ 12

Author(s):

Monica Elman ◽

Arieh Klein ◽

Michael Slatkine

Keyword(s):

Ruby Laser ◽

Tissue Reaction ◽

Skin Tissue ◽

Hair Removal ◽

Dark Skin ◽

Long Pulse

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Conservatism Aids CO2 Laser Success in Dark Skin

Skin & Allergy News ◽

10.1016/s0037-6337(07)70039-6 ◽

2007 ◽

Vol 38 (2) ◽

pp. 24

Author(s):

SHARON WORCESTER

Keyword(s):

Co2 Laser ◽

Dark Skin

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Light and Heat Combo Removes Hair on Dark Skin

Skin & Allergy News ◽

10.1016/s0037-6337(06)71238-4 ◽

2006 ◽

Vol 37 (5) ◽

pp. 16

Author(s):

KERRI WACHTER

Keyword(s):

Dark Skin

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Dark Skin Tied to Later Cancer Dx, Poorer Survival

Skin & Allergy News ◽

10.1016/s0037-6337(05)70229-1 ◽

2005 ◽

Vol 36 (5) ◽

pp. 34

Author(s):

MICHELE G. SULLIVAN

Keyword(s):

Dark Skin

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Energy Plus Phototherapy Clears Acne in Dark Skin

Skin & Allergy News ◽

10.1016/s0037-6337(08)70395-4 ◽

2008 ◽

Vol 39 (6) ◽

pp. 27

Author(s):

SHARON WORCESTER

Keyword(s):

Dark Skin ◽

Energy Plus

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Dark Skin Heightens Laser Hair Removal Risks

Skin & Allergy News ◽

10.1016/s0037-6337(10)70177-7 ◽

2010 ◽

Vol 41 (6) ◽

pp. 30

Author(s):

DOUG BRUNK

Keyword(s):

Hair Removal ◽

Dark Skin ◽

Laser Hair Removal

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Duffy antigen / receptor for chemokines correlates with inflammatory reaction in rats with venous hypertension: implication for the pathogenesis of primary chronic venous disease

VASA ◽

10.1024/0301-1526/a000327 ◽

2014 ◽

Vol 43 (1) ◽

pp. 47-54 ◽

Cited By ~ 1

Author(s):

Weibin Huang ◽

Weiwei Qin ◽

Lei Lv ◽

Haoyv Deng ◽

Hao Zhang ◽

...

Keyword(s):

Mononuclear Cells ◽

Early Stage ◽

Antigen Receptor ◽

Venous Hypertension ◽

Skin Tissue ◽

Chronic Venous Disease ◽

Venous Disease ◽

Dependent Manner ◽

Time Points ◽

Duffy Antigen

Background: Duffy antigen / receptor for chemokines (DARC) possesses high affinity for several chemokine subgroups of CC and CXC. Although DARC has been shown to play a role in many inflammatory diseases, its effect on chronic venous disease (CVD) remains unidentified. We explored whether the expression of DARC in skin tissue was activated under venous hypertension as well as the relationships between DARC and inflammation. Materials and methods: The inflammation in a rat model of venous hypertension caused by a femoral arterial-venous fistula (AVF) was studied. At specified intervals the pressure in the femoral veins was recorded within 42 days. Hindlimb skin specimens were harvested at different time points. The expressions of DARC, interleukin-8 (IL-8), and monocyte chemotactic protein-1 (MCP-1) in skin tissue were examined. Mononuclear cells infiltrated in skin tissue were detected. Results: Femoral venous pressures in AVF groups increased significantly at different time points (P < 0.01). DARC was expressed in skin tissue and its expression level increased significantly in AVF groups from the 7nd day on and was enhanced in a time-dependent manner within 42 days (P < 0.05). Meanwhile, both MCP-1 and IL-8 had higher levels, accompanied by increased mononuclear cells infiltrating into skin tissue (P < 0.05). Conclusions: A rat AVF model which can maintain venous hypertension for at least 42 days is competent for researching the pathogenesis of CVD. DARC, which plays a role in the inflammation of skin tissue under venous hypertension, may become a new molecular target for diagnosis and treatment of CVD at a very early stage.

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