猕猴被毛氨基酸含量的初步研究

为建立实验猕猴被毛氨基酸含量的参考数据和对猕猴饲料氨基酸配比的筛选提供实验基础数据,挑选不同生活环境的猕猴共30只,即笼养猴10只、半自然圈养(猴园)猴10只、野外猴10只,用氨基酸自动分析仪测定其被毛氨基酸的含量.分析结果表明,按不同生活环境分组,猕猴被毛的脯氨酸、缬氨酸、氨和精氨酸以及胱氨酸的含量是人工饲养猴(包括笼养猴和猴园猴)低于野外猴(P<0.01),被毛赖氨酸、组氨酸和氨基酸总量含量是野外猴高于笼养猴(P<0.05)和猴园猴(P<0.01);按性别分组,只有雄性猴的被毛苏氨酸和组氨酸的含量高于雌性猴(JP<0.05),其余氨基酸均无差异(P>0.05).因此,影响猕猴被毛大部分氨基酸含量的因素不仅是食物相应氨基酸的含量,生活环境也有很大的影响;性别因素对猕猴被毛的大部分氨基酸的含量是没有影响的.     

雾化吸入雷公藤内酯醇对哮喘大鼠气道平滑肌增生及NF-κB、Bcl-2表达的影响

目的：探讨雷公藤内酯醇对哮喘气道重构及核因子-kappaB（NF-κB）、Bcl-2表达的影响。方法：将40只SD大鼠随机分为5组（n=8）：正常对照组（A组）;哮喘4周组（B组）;哮喘6周组（C组）;治疗4周组（D组）;治疗6周组（E组）。测定气道反应性并观察气道壁嗜酸性粒细胞浸润;图像分析软件测定支气管壁厚度、支气管平滑肌厚度及支气管平滑肌细胞核数量;免疫组织化学染色、Western印迹法检测PCNA、NF-κB、Bcl-2蛋白的表达,逆转录聚合酶链式反应（RT-PCR）检测Bcl-2mRNA表达。结果：①B组、C组NF-κB的蛋白表达量显著高于A组（P均〈0.01）,E组上述指标较B组、C组、D组均显著降低（P〈0.01、P〈0.01、P〈0.05）;②B组、C组Bcl-2蛋白及mRNA表达水平显著高于A组（P〈0.01）;E组蛋白表达量较B组、C组、D周组均显著降低（依次为P〈0.05、P〈0.01、P〈0.01）,mRNA表达水平与上述各组比较亦均显著降低（P〈0.01）,E组蛋白及mRNA表达水平与A组相比仍较高（依次为P〈0.05、P〈0.01）;③B组、C组PCNA的蛋白表达量明显高于A组（P〈0.01）;④B组及C组支气管壁厚度、支气管壁平滑肌厚度、支气管壁平滑肌细胞核数量均较A组明显增加（P〈0.01）,而E组上述指标较B组、C组、D组均显著降低（P〈0.01）;⑤B组、C组的气道反应性均高于A组（P均〈0.01）,E组较B组、C组、D组均显著降低（P〈0.01、P〈0.01、P〈0.05）。结论：哮喘气道平滑肌增生与气道平滑肌细胞（ASMCs）凋亡不足相关。NF-κB可能通过抑制ASMCs凋亡,参与哮喘气道高反应性及气道重构过程。雷公藤内酯醇可能通过下调NF-κB而抑制Bcl-2的表达,从而促进ASMCs凋亡、抑制气道平滑肌增生。     

大鼠心肌缺血再灌注模型构建的改良

目的改良大鼠心肌缺血再灌注模型的构建方法,增强实用性。方法32只SD雄性大鼠随机分为四组（A组：伪手术组;B组：缺血组;C组：缺血30 min再灌注组;D组：缺血60 min再灌注组）。缺血过程在人工机械通气条件下完成,术前术中监测心电图变化,模型成功72 h后抽血进行心肌酶谱分析,并观察左室压变化。结果造模成功率为91%。B、C、D组各心肌酶含量明显高于A组（P〈0.05）,C、D组低于B组（P〈0.05）。B、C、D组左室压值低于A组（P〈0.05）,C、D组高于B组（P〈0.05）。结论改进后的模型制备方法简便易行,成功率高,评价指标符合临床应用。     

频谱水对SPF级KM小鼠的抗疲劳作用

目的探讨频谱水对SPF级KM小鼠的抗疲劳作用。方法将75只雄性SPF级KM小鼠随机地分成三组,分别给予三种不同的实验处理,30 d后测定受试小鼠负重游泳时间、血清尿素、肝糖原和血乳酸含量,并进行统计学分析。结果统计分析结果显示：（1）负重游泳致死时间和肝糖原含量,A、B、C三组之间差异不显著（P〉0.05）;（2）A组的血清尿素含量显著高于B组和C组（P〈0.01）,但B组和C组之间差异不显著（P〉0.05）;（3）在三个时间点分别测定各组小鼠血中乳酸含量,其中A、B两组小鼠的血乳酸含量显著高于C组（P〈0.05）,且游泳后休息30 min,A组小鼠的血乳酸含量又显著高于B组（P〈0.05）。结论频谱水对SPF级KM小鼠抗疲劳有一定的作用,但不具有统计学意义。     

糖化血红蛋白水平与急性缺血性脑卒中预后的相关性

目的：探讨糖化血红蛋白对急性脑梗死患者病情严重程度及预后的影响,为临床治疗提供科学依据。方法：将106例合并糖尿病的急性脑梗死患者根据其入院48h内HbA1c水平分为3组,对3组进行神经功能缺损评分、脑梗死损伤程度、治疗后疗效评价比较。结果：治疗前A组和B组神经功能缺损评分均明显高于C组（P〈0.05）,治疗后各组较治疗前均有所降低,但A组和B组神经功能缺损评分仍明显高于C组（P〈0.05）;入院时A组和B组脑梗死损伤程度中度、重度者明显高于C组（P〈0.05）;总有效率A组和B组明显低于C组,且A组与B组比较,A组明显低于B组（P〈0.05）,A组和B组脑梗死急性期加重率和死亡率明显高于C组（P〈0.05）;A组与B组相比,A组神经功能缺损评分、脑梗死损伤程度以及急性期加重率和死亡率明显高于B组,总有效率较B组低（P〈0.05）。结论：HbA1c水平与脑卒中的严重程度以及急性期预后不良密切相关,可以作为反映脑卒中发病时病情严重的指标之一。值得推广。     

磁处理水对家兔血脂影响的实验研究

目的：探讨饮用磁处理水时间的长短与降低家兔血脂的关系.方法：72只家兔平均分四组A组基础饲料组,饮自来水;B、C、D高脂饲料组,B组对照组饮自来水;C组治疗1组,30天后饮磁处理水,治疗30天后采耳血,分别测血清TC、TG、HDL-c、LDL-c水平.D组治疗2组,30天后饮磁处理水,治疗100天后采耳血,分别测血清TC、TG、HDL-c、LDL-c水平.结果：B组家兔血清TC、TG、HDL-c、LDL-c水平显著高于A组,（P〈0.01）;C组家兔TC、LDL-c水平显著低与B组（P〈0.01）;,但也显著高于A组（P〈0.01）;TG、HDL-c水平与B组相比无显著差异（P〉0.05）.D组家兔血清TC、TG、LDL-c水平与B组相比均有明显下降（P〈0.01）,与A组比较差异无显著性（P〉0.05）,而HDL-c水平与A组比较明显上升（P〈0.01）.结论：长期饮用磁处理水可以显著降低家兔血清高胆固醇含量,并恢复到正常状态.     

肝康Ⅳ号对脂肪肝大鼠肝组织脂质含量及形态学的影响

目的探讨肝康Ⅳ号（Gankang Ⅳ,GKⅣ）对脂肪肝（FL）组织胆固醇（TC）、甘油三脂（TG）、超氧化物歧化酶（SOD）、丙二醛（MDA）及形态学的影响。方法64只SPF级Wistar大鼠,随机分为A组、B1组、B2组、B3组、C组、D组。A组、B1组、B2组、B3组、C组给予高脂饲料（84.4%标准饲料＋10%猪油＋0.5%胆固醇＋0.1%胆盐＋5%蛋黄粉）和白酒复合复制大鼠FL模型,B1组、B2组、B3组、C组分别给予肝康Ⅳ号低、中、高剂量和东宝肝泰灌胃干预,设空白对照D组。第6周末处死动物取肝脏制备10%的肝匀浆检测TC、TG、SOD、MDA。检测肝脏病理学。结果（1）TC、TG：B1组、B2组、B3组、C组与A组比较,TC、TG含量明显下降（P〈0.05～0.01）,B2组、B3组与C组比较差异有显著（P〈0.05）。（2）SOD、MDA：B1组、B2组、B3组、C组与A组比较,MDA含量明显下降（P〈0.05～0.01）,SOD水平明显升高（P〈0.05～0.01）;在SOD方面,B1组与C组比较差异有非常显著性（P〈0.01）,B2组与C组比较差异有显著（P〈0.05）;在MDA方面,B1组、B2组、B3组与C组比较差异有非常显著性（P〈0.01）。（3）肝脏病理学：A组为重度脂肪肝,C组、B1组为中度脂肪肝,B2组、B3组脂肪肝程度轻于C组、B1组。结论GKIV能有效降低肝脏组织脂质沉积,防止MDA的升高,SOD的下降;减轻FL程度,呈现量效关系。     

肝脏CT值与动脉粥样硬化关系

目的探讨肝脏CT值与动脉粥样硬化（AS）程度的关系,寻找AS活体量化观测指标,提高AS干预实验的质量。方法40只日本大耳白兔随机分为A（绞股蓝）组、B（辛伐他汀）组、C（高脂模型）组、E（对照组）组,分别喂饲高脂饲料＋绞股蓝5g,kg、高脂饲料＋辛伐他汀5mg／kg、高脂饲料、标准饲料。实验前和实验后3周、6周、9周检测三酰甘油（TG）、胆固醇（TC）、低密度脂蛋白胆固醇（LDL-C）、高密度脂蛋白胆固醇（HDL-C）。第7周和第9周进行CT检查。进行动脉和肝脏病理学检测。结果①TG、TC、LDL-C、HDL-C：A组、B组、C组饲养后TG、TC、LDL-C明显升高（P〈0．05）,A组和B组TG、TC、LDL-C低于C组（P〈0．05）,A组TG、HDL-C、LDL-C优于B组（P〈0．05）。②CT检查：饲养后7周、9周,A、B、C组CT值明显下降,比较有显著性差异（P〈0．05）,A组高于B组、C组（P〈0．01）,B组高于C组（P〈0．01）。③主动脉病理学：C组严重的大面积AS,A组和B组AS面积和程度显著低于C组（P〈0．01）。④肝脏病理学：A组、B组、C组肝脏弥漫性肿大,边缘钝而厚,灰黄色,A组较B组、C组肝脏色泽红润、肿大程度轻。A组2／3以上肝细胞发生脂肪样变。B、C组肝脏脂肪样变几乎为100％。结论肝脏CT值与AS的程度有一定的关系,可作为AS程度的量化指标,对指导实验过程有一定的价值。     

谷氨酰胺对嗜水气单胞菌致病中华鳖的保护作用

为探讨谷氨酰胺(Gln)对嗜水气单胞菌致病中华鳖的保护作用,本试验选取健康中华鳖270只,随机分为5组(A~E组),每组3个重复,每个重复18只。A~D组腹腔注射嗜水气单胞菌(1.3×109cfu/mL,0.5 mL),E组注射等量生理盐水。6 d后,A、E组注射生理盐水,B、C、D组分别注射100 mg/kg·BW、200 mg/kg·BW、400 mg/kg·BW Gln注射液,隔天注射,共注射3次。观测各组中华鳖的存活率,血浆总抗氧化能力(T-AOC)、谷胱甘肽过氧化物酶(GSH-PX)、丙二醛(MDA)、溶菌酶(LZM),脾脏、肝脏和肠道的组织学以及肠道菌群变化。结果表明,A组血浆LZM极显著低于C、D、E组(P0.01),C、D组LZM含量极显著高于A组(P0.01);A组T-AOC极显著低于E组(P0.01),D组T-AOC极显著高于A、B、C组(P0.01);A组GSH-PX极显著低于其余各组(P0.01);A组MDA极显著高于E组(P0.01),B、C、D组MDA显著低于A组(P0.05);A组中华鳖脾脏的红髓脾窦淤血扩张,红髓和白髓的淋巴细胞和血细胞坏死。肝脏充血严重,大量肝细胞破裂,肝细胞间有大量红细胞浸润。中肠黏膜萎缩,较多皱襞断裂。随着Gln注射剂量的增加,B、C、D组脾脏红细胞充斥逐渐减少,红白髓的分界逐渐明显。肝脏出血点减少,肝细胞的大小与排布也渐趋正常。中肠皱襞破损脱落程度逐渐减轻;A组肠道嗜水气单胞菌和大肠杆菌明显高于E组(P0.05),而乳酸杆菌和芽孢杆菌明显低于E组(P0.05);D组嗜水气单胞菌和大肠杆菌明显低于A组(P0.05),而乳酸杆菌和芽孢杆菌明显高于A组(P0.05)。注射Gln可缓解嗜水气单胞菌对中华鳖的致病作用,有效恢复机体抗氧化及非特异免疫力,降低死亡率。     

频谱水对SPF级KM小鼠抗疲劳作用的实验研究

目的探讨频谱水对SPF级KM小鼠的抗疲劳作用。方法将75只雄性SPF级KM小鼠随机地分成3组,分别给予3种不同的实验处理,30 d后测定受试小鼠负重游泳时间、血清尿素、肝糖原和血乳酸含量,并进行统计学分析。结果统计分析结果显示：（1）负重游泳致死时间和肝糖原含量,A、B、C 3组之间差异不显著（p〉0.05）;（2）A组的血清尿素含量显著高于B组和C组（P〈0.01）,但B组和C组之间差异不显著（P〉0.05）;（3）在3个时间点分别测定各组小鼠血中乳酸含量,     

Trace element contents in hair of residents from Harbin (China), Medan (Indonesia), and Tokushima (Japan)

The concentrations of 19 trace element in hair samples from 1273 residents of Harbin (China), Medan (Indonesia), and Tokushima (Japan) were measured by inductively coupled plasma emission spectrometry. The mean concentrations of Ba, Ca, and Se were significantly higher in the Harbin hair samples when compared to those from Medan, but Al, B, Cu, Fe, Mn, Na, Pb, Ti, Zn, and K were significantly higher in Medan than in Harbin hair samples. The differences in the mean concentrations of As, Cr, Mg, P, Sn, and Sr between the Medan and Harbin lots were not significant. In the Tokushima hair samples, Na and K were significantly higher, but As, B, Ba, Ca, Cr, Mg, Mn, Pb, Sn, Sr, and Se were significantly lower than in the Harbin hair samples. The differences in the mean concentrations of Al, Cu, Fe, P, Ti, and Zn between Harbin and Tokushima were not significant. In the Medan hair samples, Al, As, B, Ba, Ca, Cr, Cu, Fe, Mg, Mn, Pb, Sn, Sr, Ti, and Zn were significantly higher, but P and Se were significantly lower than in Tokushima hair samples. Differences in mean concentrations of Na and K between Tokushima and Medan were not significant.     

Assessment of reference values for hair minerals of Korean preschool children

Hair samples of 655 children (3–6 yr of age) from metropolitan and small cities in Korea were analyzed to determine the content of 23 minor and trace elements with the aim of assessing reference values. Fifteen essential elements (Fe, Zn, Cu, Ca, Mg, Mn, P, Na, K, Cr, Se, Li, V, Co, Mo) and 8 harmful elements (Pb, Al, Hg, As, Cd, Ba, Bi, U) were taken into account. Measurements were performed by inductively coupled plasma-mass spectrometry. The overall mean values were as follows (μ/g): Al, 8.78; As, 0.11; Ba, 0.32; Bi, 0.04; Ca, 212.47; Cd, 0.08; Co, 0.01; Cr, 0.47; Cu, 15.51; Fe, 12.62; Hg, 0.49; K, 34.10; Li, 0.01; Mg, 12.29; Mn, 0.29; Mo, 0.07; Na; 27.14; P, 121.21; Pb, 1.68; Se, 0.75; U. 0.04; V. 0.08; Zn, 69.99. There was no significant difference in hair mineral content between children living in metropolitan and small cities. There were positive correlations between age and the level of Zn, Ca, Na, P, Mn, and Li, but negative correlations between age and the level of Cr, V, and U. The proposed reference values for hair Zn, Mg, Ca, As, and Cd of Korean children were lower than those of other countries, but the values for other elements of hair were not significantly different from those of other countries.     

川金丝猴体毛微量元素的分析

应用等离子发射光谱法分析了秦岭产川金丝猴体毛中Ｎａ、Ｋ、Ｃａ、Ｍｇ、Ｚｎ、Ｃｄ、Ｃｏ、Ｃｕ、Ｎｉ、Ｓｒ、Ｌｉ、Ｆｅ、Ａｌ、Ｍｎ、Ｂ、Ｐ１６种微量元素的含量,发现除Ｚｎ与Ｍｎ有显著的性别差异外,余者无显著的性别差异,一般雄性稍高于雌性。与四川产川金丝猴体毛中的Ｚｎ、Ｃａ、Ｃｕ、Ｆｅ含量比较,两地区样本均有极显著的差异。     

人工饲养与野生川金丝猴体毛10种微量元素的含量及比较

测定了秦岭人工饲养(10只)和野生(14只)川金丝猴体毛中的10种微量元素含量。锌、铁、铜、钙、镁5种元素采用火焰原子吸收法;锰、铬、铅采用石墨炉原子吸收法;铝采用等离子光谱;硒经硝解后采用原子吸收法测定。结果表明,铬、锰、镁、铅、锌和硒的含量,人工猴极显著或显著高于野生猴;铁含量,人工猴极显著低于野生猴;钙、铜和铝的含量,人工猴与野生猴无显著差异。以人类毛发10种微量元素的正常范围为参照,人工猴铅、铬、锰与锌4种含量均显著超出正常范围的上限,属于严重超量。这可能与金丝猴饲养过程中添加营养制剂有关。     

三种苦苣苔对石灰土和红壤的适应性分析

为探讨苦苣苔科植物对其岩溶生境的适应性,该研究选取黄花牛耳朵(Primulina lutea)、紫花报春苣苔(Pri.purpurea)和桂林蛛毛苣苔(Paraboea guilinensis)三种苦苣苔科植物,将其栽种在石灰土及红壤两种不同类型的土壤中,观测记录其生长性状并对其叶片元素含量进行测定和比较。植株采集过程中,同时采集自然生境中三种苦苣苔科植物叶片及取样植物基部土壤,并对叶片及土壤元素的含量进行测定,作为今后苗圃试验的参照。结果表明:三种苦苣苔科植物在两种土壤上的生长状况及适应性具有差异,其在石灰土上生长良好,在红壤上生长较差;在两种不同土壤中,除N外,桂林蛛毛苣苔的叶片其他元素(P、K、Mn、Mg、Ca、Zn、Cu)差异极显著(P0.01);除P外,紫花报春苣苔的叶片其他元素(N、K、Mn、Mg、Ca、Zn、Cu)差异极显著(P0.01);除N、Cu、Ca外,黄花牛耳朵的叶片元素(P、K、Mn、Mg、Zn)差异极显著(P0.01);三种植物的叶片元素比值,除少数值没有差异外,大部分指标差异都极显著;对叶片元素与栽培土壤元素的相关性分析,发现植物叶片Mn元素与土壤中N、Ca、Mg、Zn、Mn、有机质含量等呈正相关,土壤P元素与叶片中N、P元素呈正相关,而与叶片中Zn元素呈负相关关系。在其他栽培条件一致的条件下,土壤因素及物种差别是造成黄花牛耳朵、紫花报春苣苔和桂林蛛毛苣苔适应性产生差异的主要原因。     

Correlation between 25 element contents in mane hair in riding horses and atrioventricular block

The influence of atrioventricular block (AV-block) on the trace elemental status in a horse hair was studied. The particle-induced X-ray emission (PIXE) method has provided a reliable, rapid, easy, and relatively inexpensive diagnostic method. Twenty-five elements (Al, Br, Ca, Cl, Co, Cu, Cr, Fe, Hg, K, Mg, Mn, Na, Nb, Ni, P, Pb, Rb, S, Se, Si, Ti, Y, and Zn) in mane hair and serum were measured by the PIXE method. A horse hair with first- and second-degree AV-block contained significantly greater amounts of Br, Ca, Sr, and Zn than those of horses without electrocardiographic abnormalities, whereas there was no significant differences in the elemental contents of the serum of the both groups. Those results in contents of a horse hair suggest that the evaluation of the degree of ionic imbalance by this method might be used to predict the susceptibility of a horse to heart disease much before symptoms appear.     

荒漠地区8种草本植物营养元素含量的比较分析

为深入了解荒漠植物营养元素计量特征,认识元素间的交互作用,揭示不同生长期、不同沙丘部位植物元素含量差异。以古尔班通古特沙漠8种优势草本植物(4种1年生植物,4种短命植物)为研究对象,采集不同生长期(旺盛期、枯萎期)、不同沙丘部位(坡上、腹地)的植株,测定全株植物的10种营养元素(C、N、P、K、Na、Mg、Al、Mn、Cu、Zn)。结果表明：(1)8种植物元素含量存在显著差异,体现了植物因遗传特性不同而对元素选择吸收的特点,含量为：C(230.19～401.82 mg·g^-1)、N(11.31～18.85 mg·g^-1)、P(0.95～2.08 mg·g^-1)、K(16.12～29.79mg·g^-1)、Na(0.88～3.31 mg·g^-1)、Mg(3.38～5.31 mg·g^-1)、Al(0.33～1.99 mg·g^-1)、Mn(51.35～105.32 mg·kg^-1)、Cu(4.14～6.38 mg·kg<...     

三江平原泥炭中营养元素垂直分布特征

采用冬季采样、现场分层的方法,系统地研究了三江平原河床．河漫滩型泥炭地和谷底洼地型泥炭地中常量营养元素N、P、Mg、Ca、Fe和微量营养元素Cu、Zn、Mn、B的垂直分布特征．结果表明,总N在泥炭表层富集,总P在草根层富集,其含量随剖面深度的增加而降低,Zn、Mn、B、Mg、Fe表现出草根层富集和淤泥质亚粘土潜育层急剧积累,Ca元素含量在剖面各层次中分布较均匀．某些营养元素间具有显著的相关性．     

大熊猫体内微量元素的PIXE分析——Ⅰ.毛发和肝脏的微量元素

众所周知,微量元素对生物的生存、健康和疾病有着重大的关系。通过长期的研究,已逐步形成了微量元素医学学科(孔祥瑞,1982;Prosad,A.S.,1976;Underwood,E.J.,1977)。 我们应用PIXE(质子激发X射线)分析方法,对比研究了健康的和有疾病的大熊猫的毛发和肝脏内微量元素的变化,为大熊猫的人工饲养和临床诊断提供一些数据和资料。     

Medical application of laser-induced breakdown spectroscopy (LIBS) for assessment of trace element and mineral in biosamples: Laboratory and clinical validity of the method

BackgroundBiomedical application is based on the use of LIBS-derived data on chemical contents of tissues in diagnosis of diseases, forensic investigation, as well as a mechanism for providing online feedback for laser surgery. Although LIBS has certain advantages, the issue of correlation of LIBS-derived data on chemical element content in different human and animal tissues with other methods, and especially ICP-MS, remains pertinent. The objective of the present review was to discuss the application of laser-induced breakdown spectroscopy (LIBS) for elemental analysis of human biosamples or tissues from experimental models of human diseases. Methods. A systematic search in the PubMed-Medline, Scopus, and Google Scholar databases using the terms laser-induced breakdown spectroscopy, LIBS, metals, trace elements, minerals, and names of particular chemical elements was performed up through 25 February, 2023. Of all extracted studies only those dealing with human subjects, human tissues, in vivo animal and in vitro cell line models of human diseases were reviewed in detail. Results. The majority of studies revealed a wide number of metals and metalloids in solid tissues including teeth (As, Ag, Ca, Cd, Cr, Cu, Fe, Hg, Mg, Ni, P, Pb, Sn, Sr, Ti, and Zn), bones (Al, Ba, Ca, Cd, Cr, K, Mg, Na, Pb, Sr), and nails (Al, As, Ca, Fe, K, Mg, Na, P, Pb, Si, Sr, Ti, Zn). At the same time, LIBS was also used for estimation of trace element and mineral content in hair (Ca, Cu, Fe, K, Mg, Na, Zn), blood (Al, Ca, Co, Cd, Cu, Fe, Mg, Mn, Ni, Pb, Si, Sn, Zn), cancer tissues (Ca, Cu, Fe, Mg, K, Na, Zn) and other tissues. Single studies revealed satisfactory correspondence between quantitative LIBS and ICP-OES/MS data on the level of As (81–93 %), Pb (94–98 %), Cd (50–94 %) in teeth, Cu (97–105 %), Fe (117 %), Zn (88–117 %) in hair, Ca (97–99 %), Zn (90–95 %), and Pb (61–82 %) in kidney stones. LIBS also estimated specific patterns of trace element and mineral content associated with multiple pathologies, including caries, cancer, skin disorders, and other systemic diseases including diabetes mellitus type 2, osteoporosis, hypothyroidism, etc. Data obtained from in situ tissue LIBS analysis were profitably used for discrimination between tissue types. Conclusions. Taken together, the existing data demonstrate the applicability of LIBS for medical studies, although further increase in its sensitivity, calibration range, cross-validation, and quality control is required.