IBOV 177,310.14 ▼ 0.13% IPSA 11,020.34 ▲ 0.10% IPC MEX 67,298.78 ▲ 0.88% MERVAL 3,356,435 ▼ 0.69% COLCAP 2,313.99 ▲ 0.74% BVL PERÚ 57,575.02 — — USD/BRL5.08▲ 0.41% USD/MXN17.51▲ 0.66% USD/CLP946.40▲ 1.15% USD/COP3,224▼ 0.09% USD/PEN3.39▼ 0.23% USD/ARS1,488▲ 0.36% USD/UYU40.14▲ 1.16% USD/PYG6,025▲ 1.20% USD/BOB11.03▲ 3.57% USD/DOP57.95▼ 0.09% USD/CRC451.03▲ 2.18% USD/GTQ7.62▲ 2.29% USD/HNL26.74▲ 0.88% USD/NIO36.62▲ 0.31% USD/VES736.04▼ 0.13% USD/PAB1.00— 0.00% USD/BZD2.00— 0.00% USD/JMD157.69▲ 0.48% USD/TTD6.73▲ 1.11% EUR/BRL5.77▼ 0.45% BRENT 86.94 ▼ 7.58% WTI 91.52 ▲ 5.40% IRON ORE 161.91 — — COPPER 6.37 ▼ 1.19% GOLD 4,054 ▼ 2.24% SILVER 58.03 ▼ 3.31% SOY 1,247 ▲ 1.16% CORN 487.00 ▲ 5.41% WHEAT 702.50 ▼ 0.46% COFFEE 313.15 ▼ 1.11% SUGAR 14.73 ▼ 0.07% ORANGE JUICE 147.70 ▼ 1.73% COTTON 81.49 ▲ 2.03% COCOA 5,214 ▼ 2.14% BEEF 221.38 ▼ 0.82% CATTLE 339.53 ▼ 0.48% LITHIUM 69.31 ▲ 0.45% PETR4 43.34 ▲ 1.78% VALE3 76.94 ▲ 2.45% ITUB4 42.60 ▼ 0.70% BBDC4 18.88 ▼ 0.47% ABEV3 16.05 ▼ 0.50% BBAS3 20.91 ▼ 0.85% B3SA3 15.67 ▼ 1.45% WEGE3 45.37 ▼ 2.93% PRIO3 60.97 ▲ 2.01% SUZB3 42.34 ▼ 0.75% RENT3 36.91 ▼ 0.62% AZZA3 17.29 ▼ 2.92% CSAN3 3.91 ▼ 0.26% RAIZ4 0.27 — 0.00% PCAR3 2.75 — 0.00% GMAT3 3.88 ▼ 0.77% PSSA3 55.23 ▼ 0.40% CVCB3 1.25 ▼ 1.57% POSI3 3.68 ▼ 0.54% SLCE3 14.01 ▲ 0.36% NATU3 8.68 — 0.00% BRKM5 6.17 ▲ 1.65% RANI3 8.00 — 0.00% CSNA3 5.57 ▲ 3.53% CMIN3 5.80 ▼ 0.68% USIM5 8.67 ▲ 0.23% GGBR4 24.32 ▲ 1.08% ENEV3 25.69 ▼ 1.08% CPFE3 46.33 ▼ 0.81% CMIG4 11.12 ▼ 0.80% EQTL3 38.65 ▼ 1.78% LREN3 13.40 ▼ 1.03% VIVT3 35.28 ▼ 0.28% RAIL3 13.84 ▲ 1.47% KLABIN 17.79 ▼ 0.78% RAIA DROGASIL 18.45 ▲ 0.87% RDOR3 33.49 ▼ 2.90% HAPV3 10.85 ▼ 4.74% FLRY3 16.59 ▼ 0.36% SMTO3 16.08 ▲ 0.19% UGPA3 33.06 ▲ 0.70% VBBR3 35.23 ▲ 0.71% BBSE3 42.33 ▼ 0.59% BPAC11 56.02 ▼ 1.75% CURY3 29.42 ▼ 2.58% AERI3 2.07 ▲ 0.98% VIVARA 21.39 ▼ 0.74% COMPASS 24.88 ▲ 0.28% VAMOS 3.18 ▼ 1.55% SANB11 26.72 ▼ 0.85% ASAI3 8.22 ▼ 2.14% SBSP3 28.65 ▼ 2.19% WALMEX 47.64 ▼ 2.08% GMEXICO 214.69 ▼ 0.15% FEMSA 228.63 ▲ 0.39% CEMEX 22.08 ▼ 0.41% GFNORTE 192.32 ▲ 0.37% BIMBO 60.08 ▼ 0.36% TELEVISA 9.74 ▼ 0.81% AMX 22.71 ▲ 0.09% GAP 375.52 ▼ 0.32% ASUR 270.74 ▼ 1.02% OMA 228.52 ▼ 0.08% KOF 182.58 ▼ 0.04% GRUMA 275.01 ▼ 1.94% KIMBER 38.87 ▲ 0.13% SQM-B 66,600 ▲ 2.37% COPEC 6,500 ▼ 0.76% BSANTANDER 79.90 ▲ 0.06% FALABELLA 6,030 ▼ 0.20% ENELAM 84.50 ▼ 0.04% CENCOSUD 2,000 ▼ 0.48% CMPC 1,072 ▲ 0.19% BANCO CHILE 194.12 ▲ 0.32% LATAM AIR 23.67 ▼ 1.74% YPF 83,575 ▲ 1.30% GGAL 8,155 ▼ 1.45% PAMPA 5,595 ▼ 0.53% TXAR 670.00 ▲ 0.30% ALUAR 974.00 — 0.00% TGS 9,980 ▲ 0.76% CEPU 2,390 ▼ 0.87% MIRGOR 16,925 ▲ 0.89% COME 42.70 ▼ 1.02% LOMA NEGRA 3,760 ▼ 1.31% BYMA 294.00 ▼ 0.51% TELECOM ARG 4,290 ▼ 2.94% ECOPETROL 16.72 ▲ 0.18% BANCOLOMBIA 84.91 ▲ 0.30% GRUPO AVAL 4.98 ▼ 1.29% CREDICORP 392.61 ▼ 0.27% SOUTHERN COPPER 187.09 ▼ 4.29% BUENAVENTURA 31.25 ▼ 2.62% MERCADOLIBRE 1,783 ▼ 0.88% NUBANK 14.47 ▼ 0.28% XP 17.27 ▼ 0.17% PAGSEGURO 9.48 ▼ 1.96% STONE 11.10 ▼ 2.33% GLOBANT 30.04 ▼ 2.07% TECNOGLASS 44.44 ▼ 1.72% GAP AIRPORT 214.57 ▼ 1.37% ASUR 270.74 ▼ 1.02% OMA AIRPORT 104.54 ▼ 0.77% AMX ADR 25.92 ▼ 0.78% FEMSA ADR 129.78 ▼ 0.87% CEMEX ADR 12.54 ▼ 1.42% PETROBRAS ADR 19.20 ▲ 1.61% VALE ADR 15.12 ▲ 1.82% ITAU ADR 8.37 ▼ 1.36% SANTANDER BR 5.37 ▼ 1.56% AMBEV ADR 3.13 ▼ 0.48% CSN 1.12 ▲ 2.75% GERDAU 4.80 ▲ 0.52% LATAM ADR 49.75 ▼ 2.95% BTC 65,015 ▼ 1.64% ETH 1,901 ▼ 1.70% SOL 76.65 ▼ 1.61% XRP 1.11 ▼ 2.52% BNB 566.54 ▼ 0.74% ADA 0.17 ▼ 1.73% DOGE 0.07 ▼ 3.32% AVAX 6.48 ▼ 2.07% LINK 8.50 ▼ 1.38% DOT 0.82 ▼ 2.06% LTC 46.67 ▼ 0.85% BCH 214.56 ▼ 2.46% TRX 0.33 ▼ 0.76% XLM 0.18 ▼ 2.64% HBAR 0.07 ▼ 1.29% NEAR 1.88 ▲ 0.91% ATOM 1.44 ▼ 1.74% AAVE 96.28 ▼ 1.11% SELIC 14.25% EMBRAER 83.92 ▲ 0.16% EMBRAER ADR 65.75 ▼ 0.46% JBS 12.10 ▼ 1.22% JBS BDR 61.44 ▼ 0.58% MBRF3 16.03 — 0.00% MBRFY 3.11 ▼ 2.51% INTER 5.55 ▼ 2.46% EGX 53,932 ▼ 0.11% USD/ZAR16.69▲ 1.78% USD/NGN1,366▼ 0.48% NIKKEI 66,423 ▲ 0.46% CSI300 4,728 ▲ 0.23% HSI 25,211 ▲ 1.28% NIFTY 23,870 ▼ 0.53% KOSPI 7,097 ▲ 4.40% JCI 6,315 ▼ 0.30% USD/JPY163.94▲ 0.49% USD/CNY6.77▼ 0.05% DAX 24,844 ▼ 1.24% CAC 8,307 ▼ 1.56% FTSE 10,658 ▼ 0.55% MIB 51,544 ▼ 2.36% IBEX 19,315 ▼ 1.31% STOXX 640.48 ▼ 1.00% EUR/USD1.14▼ 0.34% GBP/USD1.33▼ 0.38% SPX 7,424 ▼ 1.00% DJI 51,722 ▼ 0.95% NDX 28,576 ▼ 1.46% RUT 2,942 ▼ 0.61% TSX 35,290 ▼ 0.55% VIX 19.13 ▲ 14.96% USD/CAD1.41— 0.00% US10Y 4.7050 ▲ 1.03% IBOV 177,310.14 ▼ 0.13% IPSA 11,020.34 ▲ 0.10% IPC MEX 67,298.78 ▲ 0.88% MERVAL 3,356,435 ▼ 0.69% COLCAP 2,313.99 ▲ 0.74% BVL PERÚ 57,575.02 — — USD/BRL 5.08 ▲ 0.43% USD/MXN 17.51 ▲ 0.71% USD/CLP 945.70 ▲ 1.08% USD/COP 3,220 ▼ 0.22% USD/PEN 3.40 ▼ 0.01% USD/ARS 1,488 ▲ 0.36% USD/UYU 40.14 ▲ 1.16% USD/PYG 6,025 ▲ 1.20% USD/BOB 11.03 ▲ 3.57% USD/DOP 57.95 ▼ 0.09% USD/CRC 451.03 ▲ 2.18% USD/GTQ 7.62 ▲ 2.29% USD/HNL 26.74 ▲ 0.88% USD/NIO 36.62 ▲ 0.31% USD/VES 736.04 ▼ 0.13% USD/PAB 1.00 — 0.00% USD/BZD 2.00 — 0.00% USD/JMD 157.69 ▲ 0.48% USD/TTD 6.73 ▲ 1.11% EUR/BRL 5.77 ▼ 0.45% BRENT 86.94 ▼ 7.58% WTI 91.52 ▲ 5.40% IRON ORE 161.91 — — COPPER 6.37 ▼ 1.19% GOLD 4,054 ▼ 2.24% SILVER 58.03 ▼ 3.31% SOY 1,247 ▲ 1.16% CORN 487.00 ▲ 5.41% WHEAT 702.50 ▼ 0.46% COFFEE 313.15 ▼ 1.11% SUGAR 14.73 ▼ 0.07% ORANGE JUICE 147.70 ▼ 1.73% COTTON 81.49 ▲ 2.03% COCOA 5,214 ▼ 2.14% BEEF 221.38 ▼ 0.82% CATTLE 339.53 ▼ 0.48% LITHIUM 69.31 ▲ 0.45% PETR4 43.34 ▲ 1.78% VALE3 76.94 ▲ 2.45% ITUB4 42.60 ▼ 0.70% BBDC4 18.88 ▼ 0.47% ABEV3 16.05 ▼ 0.50% BBAS3 20.91 ▼ 0.85% B3SA3 15.67 ▼ 1.45% WEGE3 45.37 ▼ 2.93% PRIO3 60.97 ▲ 2.01% SUZB3 42.34 ▼ 0.75% RENT3 36.91 ▼ 0.62% AZZA3 17.29 ▼ 2.92% CSAN3 3.91 ▼ 0.26% RAIZ4 0.27 — 0.00% PCAR3 2.75 — 0.00% GMAT3 3.88 ▼ 0.77% PSSA3 55.23 ▼ 0.40% CVCB3 1.25 ▼ 1.57% POSI3 3.68 ▼ 0.54% SLCE3 14.01 ▲ 0.36% NATU3 8.68 — 0.00% BRKM5 6.17 ▲ 1.65% RANI3 8.00 — 0.00% CSNA3 5.57 ▲ 3.53% CMIN3 5.80 ▼ 0.68% USIM5 8.67 ▲ 0.23% GGBR4 24.32 ▲ 1.08% ENEV3 25.69 ▼ 1.08% CPFE3 46.33 ▼ 0.81% CMIG4 11.12 ▼ 0.80% EQTL3 38.65 ▼ 1.78% LREN3 13.40 ▼ 1.03% VIVT3 35.28 ▼ 0.28% RAIL3 13.84 ▲ 1.47% KLABIN 17.79 ▼ 0.78% RAIA DROGASIL 18.45 ▲ 0.87% RDOR3 33.49 ▼ 2.90% HAPV3 10.85 ▼ 4.74% FLRY3 16.59 ▼ 0.36% SMTO3 16.08 ▲ 0.19% UGPA3 33.06 ▲ 0.70% VBBR3 35.23 ▲ 0.71% BBSE3 42.33 ▼ 0.59% BPAC11 56.02 ▼ 1.75% CURY3 29.42 ▼ 2.58% AERI3 2.07 ▲ 0.98% VIVARA 21.39 ▼ 0.74% COMPASS 24.88 ▲ 0.28% VAMOS 3.18 ▼ 1.55% SANB11 26.72 ▼ 0.85% ASAI3 8.22 ▼ 2.14% SBSP3 28.65 ▼ 2.19% WALMEX 47.64 ▼ 2.08% GMEXICO 214.69 ▼ 0.15% FEMSA 228.63 ▲ 0.39% CEMEX 22.08 ▼ 0.41% GFNORTE 192.32 ▲ 0.37% BIMBO 60.08 ▼ 0.36% TELEVISA 9.74 ▼ 0.81% AMX 22.71 ▲ 0.09% GAP 375.52 ▼ 0.32% ASUR 270.74 ▼ 1.02% OMA 228.52 ▼ 0.08% KOF 182.58 ▼ 0.04% GRUMA 275.01 ▼ 1.94% KIMBER 38.87 ▲ 0.13% SQM-B 66,600 ▲ 2.37% COPEC 6,500 ▼ 0.76% BSANTANDER 79.90 ▲ 0.06% FALABELLA 6,030 ▼ 0.20% ENELAM 84.50 ▼ 0.04% CENCOSUD 2,000 ▼ 0.48% CMPC 1,072 ▲ 0.19% BANCO CHILE 194.12 ▲ 0.32% LATAM AIR 23.67 ▼ 1.74% YPF 83,575 ▲ 1.30% GGAL 8,155 ▼ 1.45% PAMPA 5,595 ▼ 0.53% TXAR 670.00 ▲ 0.30% ALUAR 974.00 — 0.00% TGS 9,980 ▲ 0.76% CEPU 2,390 ▼ 0.87% MIRGOR 16,925 ▲ 0.89% COME 42.70 ▼ 1.02% LOMA NEGRA 3,760 ▼ 1.31% BYMA 294.00 ▼ 0.51% TELECOM ARG 4,290 ▼ 2.94% ECOPETROL 16.72 ▲ 0.18% BANCOLOMBIA 84.91 ▲ 0.30% GRUPO AVAL 4.98 ▼ 1.29% CREDICORP 392.61 ▼ 0.27% SOUTHERN COPPER 187.09 ▼ 4.29% BUENAVENTURA 31.25 ▼ 2.62% MERCADOLIBRE 1,783 ▼ 0.88% NUBANK 14.47 ▼ 0.28% XP 17.27 ▼ 0.17% PAGSEGURO 9.48 ▼ 1.96% STONE 11.10 ▼ 2.33% GLOBANT 30.04 ▼ 2.07% TECNOGLASS 44.44 ▼ 1.72% GAP AIRPORT 214.57 ▼ 1.37% ASUR 270.74 ▼ 1.02% OMA AIRPORT 104.54 ▼ 0.77% AMX ADR 25.92 ▼ 0.78% FEMSA ADR 129.78 ▼ 0.87% CEMEX ADR 12.54 ▼ 1.42% PETROBRAS ADR 19.20 ▲ 1.61% VALE ADR 15.12 ▲ 1.82% ITAU ADR 8.37 ▼ 1.36% SANTANDER BR 5.37 ▼ 1.56% AMBEV ADR 3.13 ▼ 0.48% CSN 1.12 ▲ 2.75% GERDAU 4.80 ▲ 0.52% LATAM ADR 49.75 ▼ 2.95% BTC 65,015 ▼ 1.64% ETH 1,901 ▼ 1.70% SOL 76.65 ▼ 1.61% XRP 1.11 ▼ 2.52% BNB 566.54 ▼ 0.74% ADA 0.17 ▼ 1.73% DOGE 0.07 ▼ 3.32% AVAX 6.48 ▼ 2.07% LINK 8.50 ▼ 1.38% DOT 0.82 ▼ 2.06% LTC 46.67 ▼ 0.85% BCH 214.56 ▼ 2.46% TRX 0.33 ▼ 0.76% XLM 0.18 ▼ 2.64% HBAR 0.07 ▼ 1.29% NEAR 1.88 ▲ 0.91% ATOM 1.44 ▼ 1.74% AAVE 96.28 ▼ 1.11% SELIC 14.25% EMBRAER 83.92 ▲ 0.16% EMBRAER ADR 65.75 ▼ 0.46% JBS 12.10 ▼ 1.22% JBS BDR 61.44 ▼ 0.58% MBRF3 16.03 — 0.00% MBRFY 3.11 ▼ 2.51% INTER 5.55 ▼ 2.46% EGX 53,932 ▼ 0.11% USD/ZAR 16.68 ▲ 1.66% USD/NGN 1,366 ▼ 0.27% NIKKEI 66,423 ▲ 0.46% CSI300 4,728 ▲ 0.23% HSI 25,211 ▲ 1.28% NIFTY 23,870 ▼ 0.53% KOSPI 7,097 ▲ 4.40% JCI 6,315 ▼ 0.30% USD/JPY 163.93 ▲ 0.51% USD/CNY 6.7696 ▲ 0.08% DAX 24,844 ▼ 1.24% CAC 8,307 ▼ 1.56% FTSE 10,658 ▼ 0.55% MIB 51,544 ▼ 2.36% IBEX 19,315 ▼ 1.31% STOXX 640.48 ▼ 1.00% EUR/USD 1.1373 ▼ 0.32% GBP/USD 1.3325 ▼ 0.38% SPX 7,424 ▼ 1.00% DJI 51,722 ▼ 0.95% NDX 28,576 ▼ 1.46% RUT 2,942 ▼ 0.61% TSX 35,290 ▼ 0.55% VIX 19.13 ▲ 14.96% USD/CAD 1.4088 ▲ 0.04% US10Y 4.7050 ▲ 1.03%
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Thursday, July 23, 2026

Alzheimer’s Study Retraction Sparks Research Integrity Crisis

By · June 6, 2024 · 2 min read

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Researchers have retracted a major 2006 study on Alzheimer’s disease due to manipulated images, creating a significant setback in the scientific community.

This retraction involves a highly-cited paper by neuroscientist Karen Ashe, which has now raised serious concerns about research integrity.

The controversial study suggested that an amyloid beta protein could cause Alzheimer’s. This hypothesis drove much of the research and funding in the field for 16 years.

Scientists believed that amyloid beta deposits in the brain led to cognitive decline. Consequently, this theory influenced numerous studies and treatment developments.

The retraction followed a six-month investigation by Science magazine.

Alzheimer's Study Retraction Sparks Research Integrity Crisis
Alzheimer’s Study Retraction Sparks Research Integrity Crisis. (Photo Internet reproduction)
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Neuroscientist Matthew Schrag from Vanderbilt University found evidence of image tampering in over 20 papers, including the 2006 study.

His findings showed that some images had been manipulated to strengthen the results, misleading the scientific community.

This scandal raises critical questions about the validity of past research and the future direction of Alzheimer’s studies.

Nobel laureate Thomas Südhof noted that the flawed research wasted significant NIH funding and misled scientists.

The National Institutes of Health (NIH) increased its funding for amyloid-related research following the 2006 paper, directing $287 million to such studies by 2021.

The controversy also highlights ongoing issues of research integrity. Misleading imagery, often exacerbated by AI, continues to plague academic publications.

This incident underscores the need for stringent verification processes to ensure the accuracy of scientific research.

Navigating Trust in Alzheimer’s Research

Globally, the response has been significant. The international media extensively covered the retraction, emphasizing the need for transparency to maintain public trust.

In addition, the potential ramifications could influence future research funding and methodologies, prompting a re-evaluation of existing studies and theories in Alzheimer’s research.

This retraction represents a crucial moment in scientific research. It underscores the importance of research integrity and the need for rigorous verification to avoid significant misdirections.

The scientific community must now navigate this setback and work towards rebuilding trust and advancing our understanding of Alzheimer‘s disease.

In short, this scandal has shaken the Alzheimer’s research field and highlighted the critical need for transparency and accuracy.

Researchers must now re-evaluate past findings and ensure future studies maintain the highest standards of integrity.

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