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B3528

Sigma-Aldrich

BSK-H Medium

With sodium bicarbonate and HEPES, liquid, sterile-filtered, suitable for cell culture

Synonym(s):

BSK-H Medium Solution, Barbour-Stoenner-Kelly medium, Cell Culture Medium, Medium for Cell Culture

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About This Item

UNSPSC Code:
12352207
NACRES:
NA.75

product name

BSK-H Medium, With sodium bicarbonate, suitable for Borrelia burgdorferi (Qualified)

Quality Level

sterility

sterile; sterile-filtered

form

liquid

suitability

suitable for Borrelia burgdorferi (Qualified)

application(s)

food and beverages

components

NaHCO3: 2.2 g/L
glucose: 6.0 g/L (Dextro)
phenol red: 0.02124 g/L
HEPES: 6.0 g/L

shipped in

dry ice

storage temp.

−20°C

Application

BSK-H medium is a standardized complex medium designed to support the growth of the Lyme disease spirochete, Borrelia burgdorferi. To standardize the procedure for isolating and culturing Lyme disease spirochetes, Pollack, RJ et. al. modified the composition of the medium generally used for this purpose (BSK-II) and developed a system for its distribution. This medium contains no gelatin or agarose, and various components are used in proportions that differ from those in BSK-II. Each of the major proteinacious components was screened by substitution in samples of the complete product. The final medium was evaluated for the capacity to grow related spirochetes including Borrelia burgdorferi N40, Guilford, and JD-1 as well as strains of Borrelia hermsii (HS-1) and of Borrelia coriaceae (CO53). Standardized medium, supplemented with prescreened rabbit serum, facilitates comparison of research results between laboratories and may eventually permit definitive clinical diagnosis of Lyme disease based on demonstration of the pathogen. The standardized medium is designated BSK-H.
Formulation for the growth and expansion of the Lyme desease spirochete, Borrelia burgdorferi

Preparation Note

1. BSK-H Medium is supplied as a sterile-filtered liquid. After thawing, mix well by inverting the bottle prior to use. If the thawed medium will not be used within a few days it is recommended that the medium be refrozen in working aliquots to avoid repeated free-thaw cycles.
2. Prior to use, we recommend that the medium should be supplemented aseptically with prescreened, sterile-filtered serum to a final concentration of 6%. (See note below)
3. Other supplements may be added aseptically as desired. The nature of the supplement may affect storage conditions and shelf-life of the medium.

NOTE: For best results, serum used to supplement the medium should be prescreened for its ability to support the growth of Borrelia burgdorferi. Prescreened, sterilefiltered Rabbit Serum [Product No. R7136] is available from Sigma.

Recommended products

For best results, serum used to supplement the medium should be prescreened for its ability to support the growth of Borrelia burgdorferi. Prescreened, sterile filtered Rabbit Serum [Product No. R7136] is available from Sigma.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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A G Barbour
The Yale journal of biology and medicine, 57(4), 521-525 (1984-07-01)
The successful isolation and cultivation of Lyme disease spirochetes traces its lineage to early attempts at cultivating relapsing fever borreliae. Observations on the growth of Lyme disease spirochetes under different in vitro conditions may yield important clues to both the
R J Pollack et al.
Journal of clinical microbiology, 31(5), 1251-1255 (1993-05-01)
To standardize the procedure for isolating and culturing Lyme disease spirochetes, we modified the composition of the medium generally used for this purpose (BSK-II) and developed a system for its distribution. This medium contains no gelatin or agarose, and various
S Y Sung et al.
Infection and immunity, 68(3), 1319-1327 (2000-02-26)
The ospE gene family of the Lyme disease spirochetes encodes a polymorphic group of immunogenic lipoproteins. The ospE genes are one of several gene families that are flanked by a highly conserved upstream sequence called the upstream homology box, or
Gary P Wormser et al.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 47(7), 910-914 (2008-08-30)
A potential concern with any serologic test to detect antibodies to Borrelia burgdorferi is whether the epitopes incorporated in the test provide sufficient cross-reactivity to detect infection with all of the pathogenic strains of the species. This is a particular
Islay Rodríguez et al.
Memorias do Instituto Oswaldo Cruz, 102(8), 999-1002 (2008-01-23)
The aim of the present study was to assess the possible use of a modified medium, prepared in the laboratory using the constituents of Barbour-Stonner-Kelly (BSK) medium and medium 199 as base, for the culture of Borrelia strains, comparing the

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