Patent Application
20220000941
The present invention relates to probiotic strain compositions, namely Hafnia alvei compositions comprising zinc and/or chrome and oral formulations thereof.
The international WO2017/174658 patent application discloses pharmaceutical and food compositions comprising Hafnia alvei for inducing satiation prolonging satiety and improving body-weight composition in subjects in need thereof.
Pharmaceutical and nutraceutical compositions aiming the prevention or the treatment of metabolism-related disorders often comprise zinc and chrome. Nevertheless, such mineral elements may be deleterious for the probiotic strains, such as Hafnia alvei, comprised in such compositions.
Indeed, preliminary data of the Applicant have shown that Hafnia alvei, as many probiotic strains, are vulnerable towards ionic strength modifications in the vehicle they are carried.
Therefore, suitable compositions and formulations comprising Hafnia alvei in association with zinc and chrome salts is an unmet need.
It was surprisingly found by the Applicant, the association of Hafnia alvei with particular organic salts of zinc and chrome according to the present invention, have no effect in the viability of the probiotic strain.
This invention thus relates to a pharmaceutical or nutraceutical composition, comprising a Hafnia alvei strain probiotic composition; said strain expressing the ClpB protein; in association with zinc bisglycinate and/or chrome picolinate.
In one embodiment, chrome picolinate is in an amount ranging from 0.01 to 0.04% (w/w), in weight relative to the composition.
In one embodiment, zinc bisglycinate is in an amount ranging from 2 to 4% (w/w), in weight relative to the composition.
In a further embodiment of the invention, the ClpB protein in the Hafnia alvei probiotic composition is in an amount of at least 0.7% (w/w) in weight relative to the total weight of said composition; and the ratio of the total number of Hafnia alvei Colony Forming Units to the total Hafnia alvei cell number is at least 10−4.
In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 106 per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cell number is equal or superior to 1010 per gram of the probiotic composition.
In one embodiment, the Hafnia alvei probiotic composition is freeze-dried.
In one embodiment, the pharmaceutical or nutraceutical composition further comprises at least one pharmaceutically or nutraceutically acceptable excipient; preferably said excipient being selected from at least one anti-adherent and at least one texturizing agent.
Preferably, the anti-adherent is magnesium stearate and the texturizing agent is a modified starch.
In one particular embodiment, the composition comprises:
The invention further relates to oral dosage forms comprising the pharmaceutical or nutraceutical composition of the invention. Preferably the dosage form is selected from capsules and tablets, even more preferably the dosage form is a capsule.
In one preferred embodiment, the oral dosage form of the invention is coated with an enteric coating. Preferably said enteric coating comprises hydroxypropyl methyl-cellulose and gellan gum.
In a last aspect, the invention relates to a blister comprising at least one oral dosage form according to the invention.
In the present invention, the following terms have the following meanings:
The Applicant has demonstrated that particular zinc and chromium salts do not affect the Hafnia alvei viability. Consequently, the present invention paves the way for probiotic composition of Hafnia alvei further comprising zinc and or/chromium. The latter mineral elements being well established in the art as oligominerals necessary for the prevention, treatment or improvement of metabolic conditions.
This invention relates to a pharmaceutical or nutraceutical composition, comprising a Hafnia alvei strain probiotic composition; said strain expressing the ClpB protein; in association with zinc bisglycinate and/or chrome picolinate.
Organic Sources of Zn and Cr
According to a first embodiment, the pharmaceutical or nutraceutical composition, comprises only zinc bisglycinate
According to a second embodiment, the pharmaceutical or nutraceutical composition, comprises only chrome picolinate.
According to a preferred embodiment, the pharmaceutical or nutraceutical composition, comprises zinc bisglycinate and chrome picolinate.
In one embodiment, chrome picolinate is in an amount ranging from 0.01 to 0.04% (w/w), in weight relative to the composition. In one embodiment, chrome picolinate is in an amount ranging from 0.01 to 0.03% (w/w), in weight relative to the composition. In one embodiment, chrome picolinate is in an amount of about 0.01%, about 0.02% or about 0.03% (w/w), in weight relative to the composition. In a preferred embodiment, chrome picolinate is in an amount of about 0.02%, in weight relative to the composition.
In one embodiment, zinc bisglycinate is in an amount ranging from 2.0 to 4.0% (w/w), in weight relative to the composition. In one embodiment, zinc bisglycinate is in an amount ranging from 2.0 to 3.0% (w/w), in weight relative to the composition. In one embodiment, zinc bisglycinate is in an amount of about 2.5%, about 2.8% or about 3.0% (w/w), in weight relative to the composition. In a preferred embodiment, zinc bisglycinate is in an amount of about 2.8%, in weight relative to the composition.
In one embodiment, zinc bisglycinate is in an amount ranging from 2.0 to 3.0% (w/w) and zinc bisglycinate is in an amount ranging from 2.0 to 3.0% (w/w), in weight relative to the composition.
Hafnia alvei Strain Probiotic Composition
In one embodiment, the probiotic composition essentially consists of or comprises at least 75% (w/w) Hafnia alvei probiotic strain. In one embodiment, the composition comprises at least 75%, at least 80% (w/w), at least 85% (w/w), at least 90% (w/w), at least 95%, at least 96%, at least 97%, at least 98% (w/w) or, at least 99% of a probiotic strain, preferably Hafnia alvei probiotic strain.
In one embodiment, the probiotic composition is a solid composition.
In one preferred embodiment, the probiotic composition is a pulverulent composition (powder).
In one embodiment, the pulverulent composition (powder) presents a particle size distribution wherein particles smaller than 500 μm represent less than 80% of the particle size distribution.
In one particular embodiment, the probiotic composition is a freeze-dried composition.
In one embodiment, the probiotic composition presents more than 95% (w/w) of dry matter, in weight relative to the total composition.
In one preferred embodiment, the probiotic composition presents a water activity value (Aw) not exceeding 0.05, preferably not exceeding 0.03, even more preferably not exceeding 0.02.
Hafnia alvei
Hafnia alvei is a facultatively anaerobic rod-shaped bacillus belonging to the family of Enterobacteriaceae.
In one embodiment, Hafnia alvei is a food-grade Hafnia alvei strain.
In one embodiment, Hafnia alvei is Hafnia alvei 4597 strain.
ClpB
WO2017/174658 describes that Hafnia alvei is a ClpB-protein-expressing probiotic strain.
As used herein, the term “ClpB” has its general meaning in the art and is also known as heat shock protein F84.1 which is a member of the Hsp100/ClpB family of hexameric AAA+-ATPases. ClpB has been described as an essential factor for acquired thermotolerance several Gram-negative and Gram-positive bacteria. Typically, the amino acid sequence of chaperone protein ClpB comprises or consists of an amino acid sequence 96 to 100% identical to the amino acid sequence of SEQ ID NO: 1. Preferably, the amino acid sequence of ClpB is 96, 97, 98, 99 or 100% identical to the amino acid sequence 540-550 (ARWTGIPVSR) of SEQ ID NO: 1.
In one embodiment, the ClpB protein designates the 96 kDa peptide of SEQ ID NO: 1.
In the context of the present application, the percentage of identity is calculated using a global alignment (i.e. the two sequences are compared over their entire length). Methods for comparing the identity of two or more sequences are well known in the art. The «needle» program, which uses the Needleman-Wunsch global alignment algorithm (Needleman and Wunsch, 1970 J. Mol. Biol. 48:443-453) to find the optimum alignment (including gaps) of two sequences when considering their entire length, may for example be used. The needle program is, for example, available on the ebi.ac.uk world wide web site. The percentage of identity in accordance with the invention is preferably calculated using the EMBOSS: needle (global) program with a “Gap Open” parameter equal to 10.0, a “Gap Extend” parameter equal to 0.5, and a Blosum62 matrix.
According to the invention the ClpB protein mimic the alpha-MSH protein for inducing satiation. Thus, in some embodiments, the ClpB protein of the present invention is recognized by an anti-alpha-MSH antibody.
In one embodiment, the ClpB protein designates the 96 kDa peptide of SEQ ID NO: 1.
In one embodiment, the ClpB protein designates the ClpB fragments of 70, 60, 45, 40, 37, 35, 25 and 17 kDa fragments. Such fragments are recognized by an anti-alpha-MSH antibody. In one embodiment, the ClpB fragments are selected from the fragments of 70, 40, 37 and 25 kDa fragments.
In one embodiment, the ClpB protein designates alpha-MSH antibody cross-reacting dimers or precursors of ClpB and fragments thereof. In one embodiment, such dimers or precursors are selected from the fragments of 100, 125, 130 and 150 kDa.
Typically, the antibody is a monoclonal antibody. In some embodiments, the antibody is a polyclonal antibody such as polyclonal rabbit anti-α-MSH IgG (1:1000, Peninsula Laboratories, San Carlos, Calif., USA). The amino acid sequence of α-MSH preferably comprises or consists of the amino acid sequence SYSMEHFRWGKPV (SEQ ID NO: 2) (Gen Pept Sequence ID, PRF: 223274, as available on Dec. 2, 2013).
As used herein, “amino acids” are represented by their full name, their three letter code or their one letter code as well known in the art. Amino acid residues in peptides are abbreviated as follows: Phenylalanine is Phe or F; Leucine is Leu or L; Isoleucine is Ile or I; Methionine is Met or M; Valine is Val or V; Serine is Ser or S; Proline is Pro or P; Threonine is Thr or T; Alanine is Ala or A; Tyrosine is Tyr or Y; Histidine is His or H; Glutamine is Gln or Q; Asparagine is Asn or N; Lysine is Lys or K; Aspartic Acid is Asp or D; Glutamic Acid is Glu or E; Cysteine is Cys or C; Tryptophan is Trp or W; Arginine is Arg or R; and Glycine is Gly or G.
As used herein, the term “amino acids” includes both natural and synthetic amino acids, and both D and L amino acids. “Standard amino acid” or “naturally occurring amino acid” means any of the twenty standard L-amino acids commonly found in naturally occurring peptides. “Nonstandard amino acid residue” means any amino acid, other than the standard amino acids, regardless of whether it is prepared synthetically or derived from a natural source. For example, naphtlylalanine can be substituted for tryptophan to facilitate synthesis. Other synthetic amino acids that can be substituted include, but are not limited to, L-hydroxypropyl, L-3,4-dihydroxyphenylalanyl, alpha-amino acids such as L-alpha-hydroxylysyl and D-alpha-methylalanyl, L-alpha-methylalanyl, beta-amino acids, and isoquinolyl.
As used herein, “amino acid” also encompasses chemically modified amino acids, including but not limited to salts, amino acid derivatives (such as amides), and substitutions. Amino acids contained within the polypeptides of the present invention, and particularly at the carboxy- or amino-terminus, can be modified by methylation, amidation, acetylation or substitution with other chemical groups which can change the polypeptide's circulating half-life without adversely affecting their activity. Additionally, a disulfide linkage may be present or absent in the polypeptides of the invention.
ClpB Amount
Preferably the probiotic composition of Hafnia alvei that comprises ClpB protein in an amount of at least 0.7% (w/w) in weight relative to the total weight of the probiotic composition. Typically, the ClpB protein is in an amount equal or superior to 0.7% (w/w), preferably equal or superior to 0.8% (w/w), even more preferably equal or superior to 0.9% (w/w) in weight relative to the total weight of the probiotic composition.
In one embodiment, the ClpB protein is in an amount ranging:
Preliminary data have shown that the biological effects of Hafnia alvei are CFU (Colony Forming Units)-dependent and total number Hafnia alvei cell number-dependent.
Thus, the probiotic composition may be further characterized by the number of Hafnia alvei Colony Forming Units as well as the total number Hafnia alvei cell number.
Ratio
In one preferred embodiment, the ratio of the total number of Hafnia alvei Colony Forming Units to the total Hafnia alvei cell number is at least 10−4. In one embodiment, the ratio is at least 2.2 10−4, preferably at least 2.5 10−4, at least 3 10−4 or at least 5 10−3.
In one embodiment, the CFU to the total Hafnia alvei cell number ranges from 10−4 to 1.
In one embodiment, the CFU to the total Hafnia alvei cell number ranges from 5 10−4 to 1.
In one embodiment, the CFU to the total Hafnia alvei cell number ranges from 10−4 to 0.5.
In one embodiment, the CFU to the total Hafnia alvei cell number ranges from 5 10−4 to 0.5.
In one preferred embodiment, the CFU to the total Hafnia alvei cell number ranges from 10−4 to 0.8.
Without willing to be bound by a theory, the ratio according to the present invention guarantees the optimal ClpB secretion by Hafnia alvei within the intestinal tract of the subject that consumed the composition according to the invention. Thus, Hafnia alvei strains may have a dual role. Firstly, acting as a protective vehicle for the ClpB that was expressed by the strain prior to its administration to the subject. Secondly, the Hafnia alvei forming part of the subject's microbiota, shall continue secreting ClpB under the suitable conditions (stationary phase of the strain's growth phase). It appears that the Hafnia alvei Colony Forming Units to the total Hafnia alvei cell number optimizes said dual role of Hafnia alvei and concomitantly the desired beneficial effects on body weight control.
CFU
In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 106 per gram of the probiotic composition. In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 5 106 per gram of the probiotic composition. In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 107 per gram of the probiotic composition. In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 5 107 per gram of the probiotic composition. In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 108 per gram of the probiotic composition. In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 5 108 per gram of the probiotic composition. In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 109 per gram of the probiotic composition. In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 1010 per gram of the probiotic composition. In one embodiment, the number of Hafnia alvei Colony Forming Units cells is equal or superior to 1011 per gram of the probiotic composition
In one embodiment, the number of Hafnia alvei Colony Forming Units cells ranges from about 106 to about 5 1011 about per gram of the probiotic composition.
In one embodiment, the number of Hafnia alvei Colony Forming Units cells ranges from about 107 to about 5 1011 about per gram of the probiotic composition.
In one embodiment, the number of Hafnia alvei Colony Forming Units cells ranges from about 107 to about 1011 about per gram of the probiotic composition.
In one embodiment, the number of Hafnia alvei Colony Forming Units cells ranges from about 106 to about 109 about per gram of the probiotic composition.
In one embodiment, the number of Hafnia alvei Colony Forming Units cells ranges from about 107 to about 5 1011 about per gram of the probiotic composition.
In one embodiment, the number of Hafnia alvei Colony Forming Units cells ranges from about 107 to about 1011 about per gram of the probiotic composition.
CFU count techniques are generally known in the art. In one embodiment, the number of CFU is calculated by counting colonies on petri dishes.
Total Cell Number
One skilled in the art can calculate the total number Hafnia alvei cell number based on the CFU number and the ratio of CFU to the total number Hafnia alvei cell number, as previously described.
In one embodiment, the total number Hafnia alvei cell number is at least 108 per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cell number is at least 109 per gram of the probiotic composition.
In one preferred embodiment, the total number Hafnia alvei cell number is at least 1010 per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cell number is at least 5 1010 per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cell number is equal or superior to 1011 per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cell number ranges from 108 to 1011 per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cell number ranges from 109 to 1011 per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cell number ranges from 1010 to 1011 per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cell number is about 108, about 109, about 1010, about 1011 or about 1012, per gram of the probiotic composition.
In one embodiment, the total number Hafnia alvei cells comprises alive Hafnia alvei cells, alive but inactive Hafnia alvei cells, disrupted Hafnia alvei cells, dead Hafnia alvei cells and mixtures thereof.
In one embodiment, the total number Hafnia alvei cells is measured by Flow Cytometry. According to such embodiment the total number Hafnia alvei cells comprise, intact Hafnia alvei cells, disrupted Hafnia alvei cells, dead Hafnia alvei cells and mixtures thereof.
In one embodiment, the total number Hafnia alvei cells comprises at least 45% of intact Hafnia alvei cells relative to the total cell population. In one embodiment, the total number Hafnia alvei cells comprises at least 50% of intact Hafnia alvei cells relative to the total cell population. In one embodiment, the total number Hafnia alvei cells comprises at least 65% of intact Hafnia alvei cells relative to the total cell population.
In one embodiment, the total number Hafnia alvei cells comprises at least 45% of intact Hafnia alvei cells and less than 5% of dead Hafnia alvei cells, relative to the total cell population.
In one embodiment, the total number Hafnia alvei cells comprises at least 50% of intact Hafnia alvei cells and less than 5% of dead Hafnia alvei cells, relative to the total cell population.
In one embodiment, the total number Hafnia alvei cells comprises at least 65% of intact Hafnia alvei cells and less than 5% of dead Hafnia alvei cells, relative to the total cell population.
In one embodiment, the total number Hafnia alvei cells comprises at least 45% of intact Hafnia alvei cells and less than 3% of dead Hafnia alvei cells, relative to the total cell population.
In one embodiment, the total number Hafnia alvei cells comprises at least 50% of intact Hafnia alvei cells and less than 3% of dead Hafnia alvei cells, relative to the total cell population.
In one embodiment, the total number Hafnia alvei cells comprises at least 65% of intact Hafnia alvei cells and less than 3% of dead Hafnia alvei cells, relative to the total cell population.
Food Composition
In one embodiment, pharmaceutical or nutraceutical composition comprises at least 5% (w/w) of the previously described probiotic composition, in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, pharmaceutical or nutraceutical composition comprises at least 8% (w/w) of the previously described probiotic composition, in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, pharmaceutical or nutraceutical composition comprises at least 10% (w/w) of the previously described probiotic composition, in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, pharmaceutical or nutraceutical composition comprises from 5% to 30% (w/w) of the previously described probiotic composition, in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, pharmaceutical or nutraceutical composition comprises from 8% to 20% (w/w) of the previously described probiotic composition, in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, pharmaceutical or nutraceutical composition comprises from 10% to 15% (w/w) of the previously described probiotic composition, in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, pharmaceutical or nutraceutical composition comprises about 9%, about 10%, about 11%, about 12%, about 13%, about 14%, or about 15% (w/w) of the previously described probiotic composition, in weight relative to the total pharmaceutical or nutraceutical composition. In one embodiment, pharmaceutical or nutraceutical composition comprises about 10%, about 11% or about 12%, (w/w) of the previously described probiotic composition, in weight relative to the total pharmaceutical or nutraceutical composition.
Excipient
In one embodiment, the pharmaceutical or nutraceutical composition of the invention further comprises at least one pharmaceutically or nutraceutically acceptable excipient.
The pharmaceutical or nutraceutical composition that comprises the bacterial strain, in particular the probiotic bacterial strain, of the present invention typically comprises carriers or vehicles. “Carriers” or “vehicles” mean materials suitable for administration and include any such material known in the art such as, for example, any liquid, gel, solvent, liquid diluent, solubilizer, or the like, which is non-toxic and which does not interact with any components, in particular with the bacterial strain, of the composition in a deleterious manner. Examples of pharmaceutically or nutraceutically acceptable carriers include, for example, water, salt solutions, alcohol, silicone, waxes, petroleum jelly, vegetable oils, polyethylene glycols, propylene glycol, liposomes, sugars, gelatin, lactose, amylose, magnesium stearate, talc, surfactants, silicic acid, viscous paraffin, perfume oil, fatty acid monoglycerides and diglycerides, petroethral fatty acid esters, hydroxymethyl-cellulose, hydroxypropylmethyl-cellulose polyvinylpyrrolidone, and the like.
Preliminary results showed that Hafnia alvei strain viability is reduced in the acidic conditions of the stomach.
Thus, the pharmaceutical or nutraceutical composition may further comprise a texturizing agent, preferably a gelling agent, even more preferably a modified starch to protect the probiotic strain from the gastric acid degradation.
In one embodiment, the at least one pharmaceutically or nutraceutically acceptable excipient is a vehicle selected from modified starches. In one embodiment, the vehicle is a pre-gelatinized starch. In one embodiment, the vehicle is a modified maize starch. In one embodiment, the vehicle is a pre-gelatinized maize starch, such as for example Pregeflo®.
In one embodiment, the at least one pharmaceutically or nutraceutically acceptable excipient is not a gelling agent comprising hydroxypropylmethylcellulose.
In one embodiment, the vehicle is in an amount ranging from 70% to 90% (w/w), in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, the vehicle is pre-gelatinized starch in an amount ranging from 70% to 88% (w/w), in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, the vehicle is pre-gelatinized starch in an amount ranging from 80% to 88% (w/w), in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, the vehicle is pre-gelatinized starch in an amount of about 81%, about 82%, about 83%, about 84%, about 85%, about 86%, about 87%, or about 88% (w/w), in weight relative to the total pharmaceutical or nutraceutical composition.
The pharmaceutical or nutraceutical composition may further comprise an anti-adherent agent in order to improve the rheological properties of the pharmaceutical or nutraceutical composition.
In one embodiment, the pharmaceutical or nutraceutical composition comprises at least 0.5% (w/w) of an anti-adherent agent, in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, the anti-adherent agent is magnesium stearate.
In one embodiment, the pharmaceutical or nutraceutical composition comprises about 0.5%, about 0.7%, about 0.8%, about 1.0%, about 1.2% or about 1.5%, (w/w) of an anti-adherent agent, preferably magnesium stearate. In one embodiment, the pharmaceutical or nutraceutical composition comprises about 1.0% (w/w) of magnesium stearate, in weight relative to the total pharmaceutical or nutraceutical composition.
In one embodiment, the pharmaceutical or nutraceutical composition further comprises minerals and micronutrients such as trace elements and vitamins in accordance with the recommendations of Government bodies such as the USRDA. For example, the composition may contain per daily dose one or more of the following micronutrients zinc, chrome, calcium, magnesium, phosphorus, iron, copper, iodine selenium, beta carotene, Vitamin C, Vitamin B1, Vitamin B6 Vitamin B2, niacin, Vitamin B12, folic acid, biotin, Vitamin D or Vitamin E.
In one embodiment, the pharmaceutical or nutraceutical composition further comprises at least one prebiotic. “Prebiotic” means food substances intended to promote the growth of the probiotic bacterial strain of the present invention in the intestines. The prebiotic may be selected from the group consisting of oligosaccharides and optionally contains fructose, galactose, mannose, soy and/or inulin; and/or dietary fibers.
In one embodiment, the pharmaceutical or nutraceutical composition comprises:
With the proviso that the total in weight percentage concentrations do not exceed 100%. One skilled in the art can adapt the concentration of each ingredient with in the disclosed ranges so as not to exceed 100%.
In one embodiment, the pharmaceutical or nutraceutical composition comprises:
Oral Dosage Form
In a further aspect, the invention relates to oral dosage forms comprising the pharmaceutical or nutraceutical composition as previously described.
In one embodiment, the oral dosage form is selected from tablets and capsules.
In one embodiment, the oral dosage form is coated with an enteric coating.
In one embodiment, the oral dosage form is selected from enterically-coated tablets and enterically-coated capsules.
Suitable coatings for such dosage forms are generally known in the art. In one embodiment, the enteric-coating is selected from Methyl acrylate-methacrylic acid copolymers, Cellulose acetate phthalate (CAP), Cellulose acetate succinate, Hydroxypropyl methyl cellulose phthalate, Hydroxypropyl methyl cellulose acetate succinate (hypromellose acetate succinate), Polyvinyl acetate phthalate (PVAP), Methyl methacrylate-methacrylic acid copolymers, shellac, cellulose acetate trimellitate, Sodium alginate and zein. In one embodiment, the enteric-coating may further comprise a thickening agent selected from starches, pectins and polysaccharides selected from algicinic acid and salts thereof, agar-agar, gelatin, carrageenan, locust vena gum and gellan gum.
The Applicants found out that the enteric coating comprising Hydroxypropyl methyl cellulose and gellan gum is particularly advantageous. Indeed, enteric-coated capsules according to the invention provided an improved stability to the bioactive ClpB and fragments thereof, compared to standard Hydroxypropyl methyl cellulose enteric-coatings.
In one preferred embodiment, the oral dosage form is selected from enterically-coated tablets and enterically-coated capsules, wherein the enteric-coating is a mixture comprising Hydroxypropyl methyl cellulose and gellan gum.
In one preferred embodiment, the oral dosage form is an enterically-coated capsule, wherein the enteric-coating is a mixture comprising Hydroxypropyl methyl cellulose and gellan gum.
In one preferred embodiment, the oral dosage form is an enterically-coated capsule, wherein the enteric-coating is a mixture comprising Hydroxypropyl methyl cellulose and gellan gum.
In one embodiment, the enteric coating is the capsule itself.
In one embodiment, the enteric coating comprises from 85 to 95% Hydroxypropyl methyl cellulose and from 5 to 15% gellan gum (w/w) in weight relative to the enteric-coating or the capsule weight.
In one embodiment, the enteric coating comprises about 95% Hydroxypropyl methyl cellulose and about 5% gellan gum (w/w) in weight relative to the enteric-coating or the capsule weight.
In one embodiment, the enteric-coating is a DRcaps™ capsule commercialized by Capsugel®.
In a last aspect, the invention relates to a blister comprising at least one oral dosage form as previously described.
In one embodiment, the blister comprises at least one capsule as previously described.
In one embodiment, the blister comprises 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, or 60 capsules as previously described.
In one embodiment, the blister comprises 30 capsules as previously described.
One further aspect of the present invention relates to a method of:
In one embodiment, the method is a non-therapeutic method.
The present invention is further illustrated by the following examples.
Different sources of zinc and chrome where evaluated for their impact on the Hafnia alvei probiotic strain cell integrity. Firstly, the cell integrity of Hafnia alvei was evaluated in liquid media.
The concentration of the minerals were based on their estimated concentration in −120 mL (typical glass of water). However, in view of observing the Hafnia alvei strain development, the zinc and chrome sources were solubilized in a Luria Browth medium (LB). The composition of LB is as follows: Tryptone 10 g/L, yeast extract 5 g/L (Biokar Diagnostic®) and NaCl 0.5 g/L (Fluka®).
The following test media were prepared as presented in table 1.
Hypori® zinc and chromium compositions comprise hydrolyzed rice proteins as carriers for zinc and chromium respectively. Hypori® are commercialized by Pileje Industrie®.
Hafnia alvei 4597 was incubated with Test medial-6 of example 1 and the turbidity of the culture media was monitored during 48 hours by means of optical densitometry (OD at 640 nm).
1. Chromium Sources:
Chromium picolinate solution induced the same turbidity as the control (LB) medium.
Consequently, Chromium picolinate does not influence the strain development.
On the contrary, inferior OD values were observed with Chromium Hypori® mineral source, implying that Chromium Hypori® inhibits the development of Hafnia alvei strain.
2. Zinc Sources:
No significant differences were observed among the turbidity of the cultures of media 1 (control, LB) and 4-6 (zinc comprising media). Further investigation was carried out by means of flow cytometry.
Samples of the culture media 1-6 were further assessed for the cell integrity by means of flow cytometry using as markers propidium iodide and Syto® 24. The flow cytometry measured the number of intact cells opposed to the population of cells whose cellular membrane integrity had been compromised.
1. Chromium Sources:
The flow cytometry assay confirmed the observations of Example 2. Indeed, chromium picolinate comprising medium induced the same concentration of intact cells per g of culture medium as the control solution (about 1.1 109 at 24 hours of incubation).
Consequently, Chromium picolinate does not influence the strain development.
On the contrary, Chromium Hypori® mineral source induced a considerable reduction of intact cells per g of culture medium compared to the control medium (about 9 108 at 24 h for medium 5).
Chromium picolinate was retained as the optimal candidate for the compositions of the invention.
2. Zinc Sources:
The results relative to the effect of zinc comprising media are presented in table 2.
Zinc bisglycinate was proven to induce no significant development inhibition compared to the control medium, as opposed to gluconate and Hypori® zinc sources.
Given the results of examples 2 and 3, a new test medium was prepared. The new medium (medium 7) comprises LB medium as previously described, 0.7 μg/mL of chromium picolinate and 104 μg/mL of zinc bisglycinate.
The development of Hafnia alvei in this new medium was monitored by optical densitometry and flow cytometry. LB medium with no added zinc or chrome was used as a control.
No reduction of the turbidity was observed with medium 7 compared to the control.
The absence of Hafnia alvei development inhibition was further confirmed by a flow cytometry analysis (about 1.2 109 intact cells per g of culture medium at 24 hours of incubation for both control medium and medium 7).
The following example shows that incubation of chromium picolinate and zinc bisglycinate with a Hafnia alvei powder does not inhibit the ulterior development of Hafnia alvei.
The probiotic composition according to table 3 was kept for 24 hours prior to the Hafnia alvei development assessment my measuring the number of the colony forming units (CFU). Results were compared with a Hafnia alvei probiotic composition that did not comprise any zinc or chromium sources (clinical batch).
Hafnia alvei 4597
After 24 h the CFU counting showed 2.7 1010 CFU per gram of the clinical batch probiotic composition.
Interestingly, after 24 h the CFU counting showed 4.2 1010 CFU per gram of the tested probiotic composition.
In conclusion, contrary to other chromium and zinc sources, chromium picolinate and zinc bisglycinate do not affect the growth of Hafnia alvei probiotic strain.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2019/082951 | 11/28/2019 | WO | 00 |
