#METABOLOMICS WORKBENCH cchlebek_20251027_100944 DATATRACK_ID:6600 STUDY_ID:ST004373 ANALYSIS_ID:AN007307 PROJECT_ID:PR002771 VERSION 1 CREATED_ON November 20, 2025, 3:46 pm #PROJECT PR:PROJECT_TITLE In C57BL/6J mice, weight loss in previously obese mice shifted the cortical bone PR:PROJECT_TITLE metabolome PR:PROJECT_SUMMARY 8-week-old male and female C57BL/6 J mice received 60 % kCal high-fat diet for PR:PROJECT_SUMMARY 12 weeks. From 20 to 30 weeks of age, mice either remained obese or lost weight PR:PROJECT_SUMMARY through 30 % caloric restriction. Controls consumed 10 % kCal low-fat diet. Mice PR:PROJECT_SUMMARY were euthanized at 30 weeks of age, and cortical bone was obtained for PR:PROJECT_SUMMARY metabolomic analyses. Metabolites were extracted and underwent LC-MS analysis PR:PROJECT_SUMMARY using Waters I-Class Ultra-High Performance Liquid Chromatography coupled to a PR:PROJECT_SUMMARY Waters Synapt-XS Q-IMS-TOF in positive mode. PR:INSTITUTE Mainehealth PR:LAST_NAME Chlebek PR:FIRST_NAME Carolyn PR:ADDRESS 81 Research Drive PR:EMAIL carolyn.chlebek@mainehealth.org PR:PHONE 5085107184 #STUDY ST:STUDY_TITLE In C57BL/6J mice, weight loss in previously obese mice shifted the cortical bone ST:STUDY_TITLE metabolome ST:STUDY_SUMMARY Obesity is linked to increased fracture risk. Despite the negative effects of ST:STUDY_SUMMARY weight loss on the skeleton, patients with obesity are advised to lose weight ST:STUDY_SUMMARY via calorie restriction. Obesity and weight loss individually alter both ST:STUDY_SUMMARY whole-body and local metabolism. Little is known about changes to bone mass and ST:STUDY_SUMMARY metabolome following calorie restriction in obese preclinical models. We ST:STUDY_SUMMARY hypothesized that caloric restriction would worsen bone quality in obese mice by ST:STUDY_SUMMARY shifting the cortical bone metabolome. To induce obesity, 8-week-old male and ST:STUDY_SUMMARY female C57BL/6J mice received 60% kCal high-fat diet for 12 weeks. From 20 to 30 ST:STUDY_SUMMARY weeks of age, mice either remained obese or lost weight through 30% caloric ST:STUDY_SUMMARY restriction. Controls consumed 10% kCal low-fat diet. Compared to obesity, ST:STUDY_SUMMARY calorie restriction elicited more bone loss in both cortical and trabecular ST:STUDY_SUMMARY compartments. Weight loss also reduced bone formation. Both obesity and ST:STUDY_SUMMARY subsequent calorie restriction altered the cortical bone metabolome in a ST:STUDY_SUMMARY sex-dependent manner. Metabolic pathways altered with diet generally mapped to ST:STUDY_SUMMARY amino acid or fatty acid metabolism. In males, weight loss was associated with a ST:STUDY_SUMMARY downregulation of pathways related to tryptophan, tyrosine, ubiquinone, and ST:STUDY_SUMMARY fatty acids. In females, calorie restriction downregulated taurine and ST:STUDY_SUMMARY hypotaurine metabolism but upregulated pyrimidine metabolism, nicotinate and ST:STUDY_SUMMARY nicotinamide metabolism, and pantothenate and CoA biosynthesis. Our findings ST:STUDY_SUMMARY highlight the negative effects of obesity and subsequent caloric restriction on ST:STUDY_SUMMARY the skeleton. Despite improvements in components of systemic metabolism, caloric ST:STUDY_SUMMARY restriction in obese preclinical models did not restore bone morphology or the ST:STUDY_SUMMARY cortical metabolome to control conditions. ST:INSTITUTE Mainehealth ST:LAST_NAME Chlebek ST:FIRST_NAME Carolyn ST:ADDRESS 81 Research Drive ST:EMAIL carolyn.chlebek@mainehealth.org ST:PHONE 5085107184 #SUBJECT SU:SUBJECT_TYPE Mammal SU:SUBJECT_SPECIES Mus musculus SU:TAXONOMY_ID 10090 SU:AGE_OR_AGE_RANGE 30 wks SU:GENDER Male and female SU:ANIMAL_LIGHT_CYCLE 14 h light: 10 h dark SU:SPECIES_GROUP C57BL/6J #SUBJECT_SAMPLE_FACTORS: SUBJECT(optional)[tab]SAMPLE[tab]FACTORS(NAME:VALUE pairs separated by |)[tab]Raw file names and additional sample data SUBJECT_SAMPLE_FACTORS Blank 00 20240712_PB-Rosen_01_00_blank Diet:NA - Blank | Sex:NA - Blank | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_00_blank.mzML SUBJECT_SAMPLE_FACTORS Blank 01 20240712_PB-Rosen_01_01_blank Diet:NA - Blank | Sex:NA - Blank | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_01_blank.mzML SUBJECT_SAMPLE_FACTORS Blank 02 20240712_PB-Rosen_01_02_blank Diet:NA - Blank | Sex:NA - Blank | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_02_blank.mzML SUBJECT_SAMPLE_FACTORS Blank 03 20240712_PB-Rosen_01_03_blank Diet:NA - Blank | Sex:NA - Blank | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_03_blank.mzML SUBJECT_SAMPLE_FACTORS Blank 04 20240712_PB-Rosen_01_04_blank Diet:NA - Blank | Sex:NA - Blank | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_04_blank.mzML SUBJECT_SAMPLE_FACTORS Blank 05 20240712_PB-Rosen_01_05_blank Diet:NA - Blank | Sex:NA - Blank | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_05_blank.mzML SUBJECT_SAMPLE_FACTORS Blank 06 20240712_PB-Rosen_01_06_blank Diet:NA - Blank | Sex:NA - Blank | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_06_blank.mzML SUBJECT_SAMPLE_FACTORS Blank 07 20240712_PB-Rosen_01_07_blank Diet:NA - Blank | Sex:NA - Blank | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_07_blank.mzML SUBJECT_SAMPLE_FACTORS Neat 00 20240712_PB-Rosen_01_00_neat Diet:NA - Neat | Sex:NA - Neat | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_00_neat.mzML SUBJECT_SAMPLE_FACTORS Neat 01 20240712_PB-Rosen_01_01_neat Diet:NA - Neat | Sex:NA - Neat | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_01_neat.mzML SUBJECT_SAMPLE_FACTORS Neat 02 20240712_PB-Rosen_01_02_neat Diet:NA - Neat | Sex:NA - Neat | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_02_neat.mzML SUBJECT_SAMPLE_FACTORS Neat 03 20240712_PB-Rosen_01_03_neat Diet:NA - Neat | Sex:NA - Neat | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_03_neat.mzML SUBJECT_SAMPLE_FACTORS Neat 04 20240712_PB-Rosen_01_04_neat Diet:NA - Neat | Sex:NA - Neat | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_04_neat.mzML SUBJECT_SAMPLE_FACTORS Neat 05 20240712_PB-Rosen_01_05_neat Diet:NA - Neat | Sex:NA - Neat | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_05_neat.mzML SUBJECT_SAMPLE_FACTORS Neat 06 20240712_PB-Rosen_01_06_neat Diet:NA - Neat | Sex:NA - Neat | Sample source:NA RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_06_neat.mzML SUBJECT_SAMPLE_FACTORS Pool 1 20240712_PB-Rosen_01_P1 Diet:NA - Pooled samples | Sex:NA - Pooled samples | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_P1.mzML SUBJECT_SAMPLE_FACTORS Pool 2 20240712_PB-Rosen_01_P2 Diet:NA - Pooled samples | Sex:NA - Pooled samples | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_P2.mzML SUBJECT_SAMPLE_FACTORS Pool 3 20240712_PB-Rosen_01_P3 Diet:NA - Pooled samples | Sex:NA - Pooled samples | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_P3.mzML SUBJECT_SAMPLE_FACTORS Pool 4 20240712_PB-Rosen_01_P4 Diet:NA - Pooled samples | Sex:NA - Pooled samples | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_P4.mzML SUBJECT_SAMPLE_FACTORS Pool 5 20240712_PB-Rosen_01_P5 Diet:NA - Pooled samples | Sex:NA - Pooled samples | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_P5.mzML SUBJECT_SAMPLE_FACTORS Pool 6 20240712_PB-Rosen_01_P6 Diet:NA - Pooled samples | Sex:NA - Pooled samples | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_P6.mzML SUBJECT_SAMPLE_FACTORS 202 20240712_PB-Rosen_01_202 Diet:Ctrl | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_202.mzML SUBJECT_SAMPLE_FACTORS 207 20240712_PB-Rosen_01_207 Diet:Ctrl | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_207.mzML SUBJECT_SAMPLE_FACTORS 211 20240712_PB-Rosen_01_211 Diet:Ctrl | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_211.mzML SUBJECT_SAMPLE_FACTORS 213 20240712_PB-Rosen_01_213 Diet:Ctrl | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_213.mzML SUBJECT_SAMPLE_FACTORS 214 20240712_PB-Rosen_01_214 Diet:Ctrl | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_214.mzML SUBJECT_SAMPLE_FACTORS 215 20240712_PB-Rosen_01_215 Diet:Ctrl | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_215.mzML SUBJECT_SAMPLE_FACTORS 217 20240712_PB-Rosen_01_217 Diet:Ctrl | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_217.mzML SUBJECT_SAMPLE_FACTORS 218 20240712_PB-Rosen_01_218 Diet:Ctrl | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_218.mzML SUBJECT_SAMPLE_FACTORS 219 20240712_PB-Rosen_01_219 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_219.mzML SUBJECT_SAMPLE_FACTORS 221 20240712_PB-Rosen_01_221 Diet:HFD | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_221.mzML SUBJECT_SAMPLE_FACTORS 223 20240712_PB-Rosen_01_223 Diet:HFD | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_223.mzML SUBJECT_SAMPLE_FACTORS 225 20240712_PB-Rosen_01_225 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_225.mzML SUBJECT_SAMPLE_FACTORS 227 20240712_PB-Rosen_01_227 Diet:HFD | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_227.mzML SUBJECT_SAMPLE_FACTORS 228 20240712_PB-Rosen_01_228 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_228.mzML SUBJECT_SAMPLE_FACTORS 230 20240712_PB-Rosen_01_230 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_230.mzML SUBJECT_SAMPLE_FACTORS 232 20240712_PB-Rosen_01_232 Diet:HFD | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_232.mzML SUBJECT_SAMPLE_FACTORS 238 20240712_PB-Rosen_01_238 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_238.mzML SUBJECT_SAMPLE_FACTORS 240 20240712_PB-Rosen_01_240 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_240.mzML SUBJECT_SAMPLE_FACTORS 241 20240712_PB-Rosen_01_241 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_241.mzML SUBJECT_SAMPLE_FACTORS 242 20240712_PB-Rosen_01_242 Diet:HFD | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_242.mzML SUBJECT_SAMPLE_FACTORS 245 20240712_PB-Rosen_01_245 Diet:HFD | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_245.mzML SUBJECT_SAMPLE_FACTORS 247 20240712_PB-Rosen_01_247 Diet:HFD | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_247.mzML SUBJECT_SAMPLE_FACTORS 248 20240712_PB-Rosen_01_248 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_248.mzML SUBJECT_SAMPLE_FACTORS 249 20240712_PB-Rosen_01_249 Diet:HFD-CR | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_249.mzML SUBJECT_SAMPLE_FACTORS 252 20240712_PB-Rosen_01_252 Diet:HFD | Sex:Male | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_252.mzML SUBJECT_SAMPLE_FACTORS 301 20240712_PB-Rosen_01_301 Diet:Ctrl | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_301.mzML SUBJECT_SAMPLE_FACTORS 302 20240712_PB-Rosen_01_302 Diet:Ctrl | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_302.mzML SUBJECT_SAMPLE_FACTORS 311 20240712_PB-Rosen_01_311 Diet:Ctrl | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_311.mzML SUBJECT_SAMPLE_FACTORS 313 20240712_PB-Rosen_01_313 Diet:Ctrl | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_313.mzML SUBJECT_SAMPLE_FACTORS 315 20240712_PB-Rosen_01_315 Diet:Ctrl | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_315.mzML SUBJECT_SAMPLE_FACTORS 316 20240712_PB-Rosen_01_316 Diet:Ctrl | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_316.mzML SUBJECT_SAMPLE_FACTORS 317 20240712_PB-Rosen_01_317 Diet:Ctrl | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_317.mzML SUBJECT_SAMPLE_FACTORS 321 20240712_PB-Rosen_01_321 Diet:HFD | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_321.mzML SUBJECT_SAMPLE_FACTORS 326 20240712_PB-Rosen_01_326 Diet:HFD-CR | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_326.mzML SUBJECT_SAMPLE_FACTORS 332 20240712_PB-Rosen_01_332 Diet:HFD-CR | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_332.mzML SUBJECT_SAMPLE_FACTORS 333 20240712_PB-Rosen_01_333 Diet:HFD | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_333.mzML SUBJECT_SAMPLE_FACTORS 337 20240712_PB-Rosen_01_337 Diet:HFD | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_337.mzML SUBJECT_SAMPLE_FACTORS 342 20240712_PB-Rosen_01_342 Diet:HFD-CR | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_342.mzML SUBJECT_SAMPLE_FACTORS 344 20240712_PB-Rosen_01_344 Diet:HFD-CR | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_344.mzML SUBJECT_SAMPLE_FACTORS 352 20240712_PB-Rosen_01_352 Diet:HFD | Sex:Female | Sample source:Cortical_Bone RAW_FILE_NAME(Raw file name)=20240712_PB-Rosen_01_352.mzML #COLLECTION CO:COLLECTION_SUMMARY At euthanasia, femurs were cleaned of soft tissues and periosteum. Bone marrow CO:COLLECTION_SUMMARY was removed via centrifugation from femurs in all animals. Trabecular bone was CO:COLLECTION_SUMMARY removed from the femur and the cortical shell flash frozen in liquid nitrogen. CO:SAMPLE_TYPE Bone #TREATMENT TR:TREATMENT_SUMMARY Male and female C57BL/6J mice aged 5 weeks (Jackson Laboratories, Bar Harbor, TR:TREATMENT_SUMMARY ME) were acclimated for three weeks prior to the experiment. All mouse TR:TREATMENT_SUMMARY procedures were performed under the approval of the Institutional Animal Care TR:TREATMENT_SUMMARY and Use Committee (IACUC) at the MaineHealth Institute for Research. Throughout TR:TREATMENT_SUMMARY the study, mice were housed in 14-hour light:10-hour dark cycles. At 8 weeks of TR:TREATMENT_SUMMARY age, the High Fat Feeding Phase was initiated. During the High Fat Feeding TR:TREATMENT_SUMMARY Phase, mice were housed in groups of two or three per cage. Cages were randomly TR:TREATMENT_SUMMARY assigned to receive a 60% high fat diet, containing 60% of calories from fat or TR:TREATMENT_SUMMARY a 10% kcal low fat diet, containing 10% of calories from fat (D12492i and TR:TREATMENT_SUMMARY D12450Ji, respectively; Research Diets Inc, New Brunswick, NJ). High fat diet TR:TREATMENT_SUMMARY was completely replaced every 2-3 days. Following obesity induction, obese mice TR:TREATMENT_SUMMARY were randomly assigned to remain on the high fat diet (HFD) or were assigned to TR:TREATMENT_SUMMARY the diet-induced weight loss (HFD-CR). At the conclusion of the High Fat Feeding TR:TREATMENT_SUMMARY Phase, all mice were single housed. HFD animals continued to receive 60 % high TR:TREATMENT_SUMMARY fat diet. HFD-CR mice received the low fat diet for 2 weeks (Stabilization TR:TREATMENT_SUMMARY Phase) and were then transitioned to a 30 % calorie-restricted diet for 8 weeks TR:TREATMENT_SUMMARY (Caloric Restriction Phase) (Fig. 1A). All mice were euthanized at the end TR:TREATMENT_SUMMARY of the Caloric Restriction Phase, at 30 weeks of age. #SAMPLEPREP SP:SAMPLEPREP_SUMMARY Using a bead mill, bone was pulverized in a 70:30 methanol:acetone solution. SP:SAMPLEPREP_SUMMARY Samples were centrifuged and supernatant containing metabolites was extracted. SP:SAMPLEPREP_SUMMARY Supernatant was then dried in vacuum concentrator. Metabolites were then SP:SAMPLEPREP_SUMMARY resuspended in 1:1 acetonitrile:water. All solvents used were high-performance SP:SAMPLEPREP_SUMMARY liquid chromatography grade. #CHROMATOGRAPHY CH:CHROMATOGRAPHY_TYPE HILIC CH:INSTRUMENT_NAME Waters I-Class Ultra-High Performance Liquid Chromatography CH:COLUMN_NAME MicroSolv Diamond Hydride (150 x 2.1mm, 2.2 um, 120A) CH:SOLVENT_A 100% water; 0.1% formic acid CH:SOLVENT_B 100% acetonitrile; 0.1% formic acid CH:FLOW_GRADIENT Linear: Time(min); Flow Rate; %A; %B. Initial; 0.4; 10; 90. 2; 0.4; 10; 90. 8; CH:FLOW_GRADIENT 0.4; 50; 50. 9; 0.4; 50; 50. 9.1; 0.4; 10; 90. 15; 0.4; 10; 90. CH:FLOW_RATE 0.4 mL/min CH:COLUMN_TEMPERATURE 50 #ANALYSIS AN:ANALYSIS_TYPE MS #MS MS:INSTRUMENT_NAME Waters Synapt-XS MS:INSTRUMENT_TYPE QTOF MS:MS_TYPE ESI MS:ION_MODE POSITIVE MS:MS_COMMENTS Normalized in Progenesis MS:MS_RESULTS_FILE ST004373_AN007307_Results.txt UNITS:arbitrary units Has m/z:Yes Has RT:Yes RT units:Minutes #END