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Table 1 Sugar beet pollen allergy: work-related symptoms, determination of specific IgE and skin prick test (SPT).

From: The identification of allergen proteins in sugar beet (Beta vulgaris) pollen causing occupational allergy in greenhouses

Individual Work-related
symptoms*
Specific IgE
sugar beet
pollen (kU/l)§
Other specific
IgE (kU/l)
§ $
SPT to sugar
beet pollen
extract #
SPT to
standard
allergens&
Age/sex
1 - <0.35 - - - 44/M
2 + 4.2 a,b + e 50/F
3 + 1.3 a,c + e,f,g,h,i 28/F
4 + 2.4 a,b + f, j 54/F
5 + <0.35 - - - 41/F
6 - <0.35 - - - 41/F
7 + <0.35 - - g,i 29/M
8 + <0.35 - - - 48/M
9 + <0.35 - - - 40/M
10 + <0.35 - - - 37/M
11 + 1.8 a + - 59/F
12 + 1.0 a,b + - 54/F
13 - <0.35 - + - 60/M
14 + 2.5 - + g,h,k 27/F
15 + 11.8£ a,b,c + f,g,h,j,k 18/F
Negative control 1 Not relevant <0.35 - n.d n.d. 45/F
Negative control 2 Not relevant <0.35 - n.d. n.d. 54/M
  1. Data shown for 15 out of 31 greenhouse workers exposed to sugar beet pollen, and for two individuals, designated Negative control 1 and 2, neither working at the site nor exposed.
  2. * Work-related symptoms of allergy, such as rhinitis (in 11 of 12 individuals), dermatitis (5/12) and symptoms in lower respiratory tract (2/12).
  3. §Specific IgE determined with ImmunoCAP™ (Phadia, Uppsala, Sweden): Sugar beet w210 Data derived from the same serum samples as used in Fig 1, taken November 2005, except one individual that was sampled in September 2006£. Specific IgE data was also determined in serum samples taken November 2004, with values similar or slightly higher than in November 2005.
  4. $ Values for specific IgE against a-c were always lower than for sugar beet pollen, usually 5-fold lower. Data derived from serum samples taken November 2004, a = w11 Salsola, b = w15 Atriplex, c = w10 Chenopodium, where Salsola = Saltwort, also called Russian thistle; Atriplex = Lenscale; Chenopodium = Lambsquarter, also called Goosefoot or wild spinach.
  5. # SPT performed with histamine (10 mg/ml) as positive control (+++). Wheel sizes were in same size as histamine (++, +++, ++++) but positivity is here only noted as +, as compared to negativity (-).
  6. & SPT (skin prick test) performed with standard allergens (Phadia, Uppsala, Sweden): e = mugworth, f = birch pollen, g = timothy, h = cat, i = dust mite, j = horse, k = dog